diff --git a/ui/dist/plugin-gb28181.common.js b/ui/dist/plugin-gb28181.common.js
index 1c76b6b..3cd4b2e 100644
--- a/ui/dist/plugin-gb28181.common.js
+++ b/ui/dist/plugin-gb28181.common.js
@@ -229,7 +229,9 @@ function fromByteArray (uint8) {
 
   // go through the array every three bytes, we'll deal with trailing stuff later
   for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
-    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+    parts.push(encodeChunk(
+      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)
+    ))
   }
 
   // pad the end with zeros, but make sure to not forget the extra bytes
@@ -254,13 +256,6 @@ function fromByteArray (uint8) {
 }
 
 
-/***/ }),
-
-/***/ "2ece":
-/***/ (function(module, exports, __webpack_require__) {
-
-// extracted by mini-css-extract-plugin
-
 /***/ }),
 
 /***/ "8875":
@@ -526,6 +521,17 @@ function bytes2HexString(byte) {
 
 /* WEBPACK VAR INJECTION */}.call(this, __webpack_require__("b639").Buffer))
 
+/***/ }),
+
+/***/ "8fd7":
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_59b6c9a0_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__("fb17");
+/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_59b6c9a0_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_59b6c9a0_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__);
+/* unused harmony reexport * */
+
+
 /***/ }),
 
 /***/ "9152":
@@ -618,6 +624,17 @@ exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
 }
 
 
+/***/ }),
+
+/***/ "a1e1":
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_Records_vue_vue_type_style_index_0_id_72d12ba2_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__("bbd2");
+/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_Records_vue_vue_type_style_index_0_id_72d12ba2_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_Records_vue_vue_type_style_index_0_id_72d12ba2_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__);
+/* unused harmony reexport * */
+
+
 /***/ }),
 
 /***/ "b639":
@@ -2418,14 +2435,10 @@ function isnan (val) {
 
 /***/ }),
 
-/***/ "bf9c":
-/***/ (function(module, __webpack_exports__, __webpack_require__) {
-
-"use strict";
-/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_31458ad7_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__("2ece");
-/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_31458ad7_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_31458ad7_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__);
-/* unused harmony reexport * */
+/***/ "bbd2":
+/***/ (function(module, exports, __webpack_require__) {
 
+// extracted by mini-css-extract-plugin
 
 /***/ }),
 
@@ -2524,19 +2537,19 @@ if (typeof window !== 'undefined') {
 // Indicate to webpack that this file can be concatenated
 /* harmony default export */ var setPublicPath = (null);
 
-// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"1dab9bb8-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/App.vue?vue&type=template&id=31458ad7&scoped=true&
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"d776bd7c-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/App.vue?vue&type=template&id=59b6c9a0&scoped=true&
 var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',[(_vm.$parent.titleTabActive === 0)?_c('div',{staticClass:"tabpanel"},[_c('mu-data-table',{attrs:{"data":_vm.Devices,"columns":_vm.columns},scopedSlots:_vm._u([{key:"expand",fn:function(prop){return [_c('mu-data-table',{attrs:{"data":prop.row.Channels,"columns":_vm.columns2},scopedSlots:_vm._u([{key:"default",fn:function(ref){
 var item = ref.row;
 var $index = ref.$index;
-return [_c('td',[_vm._v(_vm._s(item.DeviceID))]),_c('td',[_vm._v(_vm._s(item.Name))]),_c('td',[_vm._v(_vm._s(item.Manufacturer))]),_c('td',[_vm._v(_vm._s(item.Address))]),_c('td',[_vm._v(_vm._s(item.Status))]),_c('td',[(item.Connected)?_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.ptz(prop.row.ID, $index, item)}}},[_vm._v("云台 ")]):_vm._e(),(item.Connected)?_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.bye(prop.row.ID, $index)}}},[_vm._v("断开")]):_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.invite(prop.row.ID, $index, item)}}},[_vm._v("连接 ")])],1)]}}],null,true)})]}},{key:"default",fn:function(ref){
+return [_c('td',[_vm._v(_vm._s(item.DeviceID))]),_c('td',[_vm._v(_vm._s(item.Name))]),_c('td',[_vm._v(_vm._s(item.Manufacturer))]),_c('td',[_vm._v(_vm._s(item.Address))]),_c('td',[_vm._v(_vm._s(item.Status))]),_c('td',[(item.Connected)?_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.ptz(prop.row.ID, $index, item)}}},[_vm._v("云台 ")]):_vm._e(),(item.Connected)?_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.bye(prop.row.ID, $index)}}},[_vm._v("断开 ")]):_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.invite(prop.row.ID, $index, item)}}},[_vm._v("连接 ")]),_c('mu-button',{on:{"click":function($event){return _vm.getRecords(prop.row.ID, $index,item)}}},[_vm._v("录像")])],1)]}}],null,true)})]}},{key:"default",fn:function(ref){
 var item = ref.row;
-return [_c('td',[_vm._v(_vm._s(item.ID))]),_c('td',[_vm._v(_vm._s(item.Addr))]),_c('td',[_vm._v(_vm._s(item.Channels ? item.Channels.length : 0))]),_c('td',[_c('StartTime',{attrs:{"value":item.RegisterTime}})],1),_c('td',[_c('StartTime',{attrs:{"value":item.UpdateTime}})],1),_c('td',[_vm._v(_vm._s(item.Status))])]}}],null,false,2809573184)})],1):_vm._e(),(_vm.$parent.titleTabActive === 1)?_c('div',{staticClass:"tabpanel"},[_c('div',{staticClass:"flex-box"},[_vm._l((_vm.channelShowList),function(channel,index){return [(channel.DeviceID)?_c('div',{key:index,staticClass:"flex-item"},[_c('webrtc-player2',{attrs:{"stream-path":'gb28181/'+channel.DeviceID}})],1):_vm._e()]})],2),(_vm.channelList.length > 0)?[_c('Page',{attrs:{"total":_vm.channelList.length,"page-size":_vm.pageInfo.onePageSize},on:{"on-change":_vm.handlePageChange}})]:_vm._e()],2):_vm._e(),_c('webrtc-player',{ref:"player",attrs:{"PublicIP":_vm.PublicIP},on:{"ptz":_vm.sendPtz},model:{value:(_vm.previewStreamPath),callback:function ($$v) {_vm.previewStreamPath=$$v},expression:"previewStreamPath"}})],1)}
+return [_c('td',[_vm._v(_vm._s(item.ID))]),_c('td',[_vm._v(_vm._s(item.Addr))]),_c('td',[_vm._v(_vm._s(item.Channels ? item.Channels.length : 0))]),_c('td',[_c('StartTime',{attrs:{"value":item.RegisterTime}})],1),_c('td',[_c('StartTime',{attrs:{"value":item.UpdateTime}})],1),_c('td',[_vm._v(_vm._s(item.Status))])]}}],null,false,2462345042)})],1):_vm._e(),(_vm.$parent.titleTabActive === 1)?_c('div',{staticClass:"tabpanel"},[_c('div',{staticClass:"flex-box"},[_vm._l((_vm.channelShowList),function(channel,index){return [(channel.DeviceID)?_c('div',{key:index,staticClass:"flex-item"},[_c('webrtc-player2',{attrs:{"stream-path":'gb28181/'+channel.DeviceID}})],1):_vm._e()]})],2),(_vm.channelList.length > 0)?[_c('Page',{attrs:{"total":_vm.channelList.length,"page-size":_vm.pageInfo.onePageSize},on:{"on-change":_vm.handlePageChange}})]:_vm._e()],2):_vm._e(),_c('webrtc-player',{ref:"player",attrs:{"PublicIP":_vm.PublicIP},on:{"ptz":_vm.sendPtz},model:{value:(_vm.previewStreamPath),callback:function ($$v) {_vm.previewStreamPath=$$v},expression:"previewStreamPath"}}),_c('records',{ref:"records",attrs:{"records":_vm.recordList},on:{"close":_vm.initRecordSearch},model:{value:(_vm.recordModal),callback:function ($$v) {_vm.recordModal=$$v},expression:"recordModal"}})],1)}
 var staticRenderFns = []
 
 
-// CONCATENATED MODULE: ./src/App.vue?vue&type=template&id=31458ad7&scoped=true&
+// CONCATENATED MODULE: ./src/App.vue?vue&type=template&id=59b6c9a0&scoped=true&
 
-// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"1dab9bb8-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Player.vue?vue&type=template&id=76558468&scoped=true&
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"d776bd7c-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Player.vue?vue&type=template&id=76558468&scoped=true&
 var Playervue_type_template_id_76558468_scoped_true_render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('Modal',_vm._g(_vm._b({attrs:{"draggable":"","width":"750","title":_vm.streamPath},on:{"on-ok":_vm.onClosePreview,"on-cancel":_vm.onClosePreview}},'Modal',_vm.$attrs,false),_vm.$listeners),[_c('div',{staticClass:"container"},[_c('video',{ref:"webrtc",attrs:{"width":"488","height":"275","autoplay":"","muted":"","controls":""},domProps:{"srcObject":_vm.stream,"muted":true}}),_c('div',{staticClass:"control"},[_vm._l((8),function(n){return _c('svg',{class:'arrow'+n,attrs:{"viewBox":"0 0 1024 1024","version":"1.1","xmlns":"http://www.w3.org/2000/svg","xmlns:xlink":"http://www.w3.org/1999/xlink","width":"64","height":"64"},on:{"click":function($event){return _vm.ptzCmdDirection(n)}}},[_c('defs'),_c('path',{attrs:{"d":"M682.666667 955.733333H341.333333a17.066667 17.066667 0 0 1-17.066666-17.066666V529.066667H85.333333a17.066667 17.066667 0 0 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_c('Option',{key:n,attrs:{"value":n}},[_vm._v("预置点"+_vm._s(n))])}),1),_c('i-button',{attrs:{"type":"primary"},on:{"click":function($event){return _vm.ptzCmd(_vm.ptzType.setPos)}}},[_vm._v("设置")]),_c('i-button',{attrs:{"type":"success"},on:{"click":function($event){return _vm.ptzCmd(_vm.ptzType.calPos)}}},[_vm._v("调用")]),_c('i-button',{attrs:{"type":"error"},on:{"click":function($event){return _vm.ptzCmd(_vm.ptzType.delPos)}}},[_vm._v("删除")]),_vm._v(" 速度： "),_c('InputNumber',{attrs:{"max":10,"min":1},model:{value:(_vm.ptzSpeed),callback:function ($$v) {_vm.ptzSpeed=$$v},expression:"ptzSpeed"}})],1)]),_c('div',{attrs:{"slot":"footer"},slot:"footer"},[(_vm.remoteSDP)?_c('mu-badge',[_c('a',{attrs:{"slot":"content","href":_vm.remoteSDPURL,"download":"remoteSDP.txt"},slot:"content"},[_vm._v("remoteSDP")])]):_vm._e(),(_vm.localSDP)?_c('mu-badge',[_c('a',{attrs:{"slot":"content","href":_vm.localSDPURL,"download":"localSDP.txt"},slot:"content"},[_vm._v("localSDP")])]):_vm._e()],1)])}
 var Playervue_type_template_id_76558468_scoped_true_staticRenderFns = []
 
@@ -2806,7 +2819,7 @@ var component = normalizeComponent(
 )
 
 /* harmony default export */ var Player = (component.exports);
-// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"1dab9bb8-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Player2.vue?vue&type=template&id=3d23233a&scoped=true&
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"d776bd7c-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Player2.vue?vue&type=template&id=3d23233a&scoped=true&
 var Player2vue_type_template_id_3d23233a_scoped_true_render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:"player-wrap"},[(_vm.rtcStream)?[_c('video',{attrs:{"autoplay":"","muted":"","controls":""},domProps:{"srcObject":_vm.rtcStream,"muted":true}})]:_vm._e()],2)}
 var Player2vue_type_template_id_3d23233a_scoped_true_staticRenderFns = []
 
@@ -2937,6 +2950,304 @@ var Player2_component = normalizeComponent(
 )
 
 /* harmony default export */ var Player2 = (Player2_component.exports);
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"d776bd7c-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Records.vue?vue&type=template&id=72d12ba2&scoped=true&
+var Recordsvue_type_template_id_72d12ba2_scoped_true_render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('Modal',_vm._g(_vm._b({attrs:{"draggable":"","width":"900","title":"Records"},on:{"on-ok":_vm.onClosePreview,"on-cancel":_vm.onClosePreview}},'Modal',_vm.$attrs,false),_vm.$listeners),[_c('div',{staticClass:"container"},[_c('div',{staticClass:"search"},[_c('DatePicker',{staticStyle:{"width":"200px"},attrs:{"type":"date","options":_vm.timeOptions,"value":_vm.search.time,"placeholder":"请选择时间","clearable":false},on:{"change":_vm.handleTimeChange}})],1),_c('div',[_c('mu-data-table',{attrs:{"columns":_vm.columns,"data":_vm.recordList},scopedSlots:_vm._u([{key:"expand",fn:function(prop){return [_c('div',[_c('m-button',{on:{"click":function($event){return _vm.play(prop.row)}}},[_vm._v("播放")])],1)]}},{key:"default",fn:function(scope){return [_c('td',[_vm._v(_vm._s(scope.row.DeviceID))]),_c('td',[_vm._v(_vm._s(scope.row.Name))]),_c('td',[_vm._v(_vm._s(scope.row.time))]),_c('td',[_vm._v(_vm._s(scope.row.length))]),_c('td',[_vm._v(_vm._s(scope.row.FilePath))]),_c('td',[_vm._v(_vm._s(scope.row.Address))]),_c('td',[_vm._v(_vm._s(scope.row.Type))])]}}])})],1)])])}
+var Recordsvue_type_template_id_72d12ba2_scoped_true_staticRenderFns = []
+
+
+// CONCATENATED MODULE: ./src/components/Records.vue?vue&type=template&id=72d12ba2&scoped=true&
+
+// CONCATENATED MODULE: ./src/utils/index.js
+/**
+ * Date:2020/12/24
+ * Desc:
+ */
+
+function getOneTimeRange(time, options) {
+    let date;
+
+    // 都为空的时候
+    if (!time && !options) {
+        date = new Date();
+    } else if (Object.prototype.toString.call(time) !== '[object Date]' && time !== null && typeof time === 'object') {
+        // time 为 options 参数。
+        options = time;
+        date = new Date();
+    } else if (Object.prototype.toString.call(time) === '[object Date]') {
+        // time 是时间格式
+        date = time;
+    } else {
+        // time 是 int 格式。
+        if (('' + time).length === 10) time = parseInt(time) * 1000;
+        time = +time; // 转成int 型
+        date = new Date(time);
+    }
+
+    options = options || {};
+
+    let result = {
+        start: 0,
+        end: 0
+    };
+
+    let _startTime = new Date(date).setHours(options.startHour || 0, options.startMin || 0, 0, 0);
+    let _endTime = new Date(date).setHours(options.endHour || 23, options.endMin || 59, 59, 0);
+    result.start = new Date(_startTime).getTime();
+    result.end = new Date(_endTime).getTime();
+
+    return result;
+};
+
+
+function formatTimestamp(t) {
+    var d = 0,
+        h = 0,
+        m = 0,
+        s = 0;
+    if (t > 0) {
+        d = Math.floor(t / 1000 / 3600 / 24)
+        h = Math.floor(t / 1000 / 60 / 60 % 24)
+        m = Math.floor(t / 1000 / 60 % 60)
+        s = Math.floor(t / 1000 % 60)
+    }
+
+    return `${d}天${h}时${m}分${s}秒`
+}
+
+function formatTimeTips(timestamp) {
+    let result;
+
+    //
+    if (time > -1) {
+        let hour = Math.floor(timestamp / 3600);
+        let min = Math.floor(timestamp / 60) % 60;
+        let sec = timestamp % 60;
+
+        sec = Math.round(sec);
+
+        if (hour < 10) {
+            result = '0' + hour + ":";
+        } else {
+            result = hour + ":";
+        }
+
+        if (min < 10) {
+            result += "0";
+        }
+        result += min + ":";
+        if (sec < 10) {
+            result += "0";
+        }
+        result += sec.toFixed(0);
+    }
+
+    return result;
+}
+
+
+function parseTime(time, cFormat) {
+    if (arguments.length === 0) {
+        return null
+    }
+    var format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
+    var date;
+    if (typeof time === 'object') {
+        date = time
+    } else {
+        if (('' + time).length === 10) time = parseInt(time) * 1000;
+        time = +time; // 转成int 型
+        date = new Date(time)
+    }
+    var formatObj = {
+        y: date.getFullYear(),
+        m: date.getMonth() + 1,
+        d: date.getDate(),
+        h: date.getHours(),
+        i: date.getMinutes(),
+        s: date.getSeconds(),
+        a: date.getDay()
+    };
+    var time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
+        var value = formatObj[key]
+        if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
+        if (result.length > 0 && value < 10) {
+            value = '0' + value
+        }
+        return value || 0
+    });
+    return time_str
+}
+
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Records.vue?vue&type=script&lang=js&
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+
+
+
+const _now = new Date();
+
+/* harmony default export */ var Recordsvue_type_script_lang_js_ = ({
+    name: "Records",
+    props: {
+        records: Array
+    },
+    data() {
+        return {
+            timeOptions: {
+                disabledDate(date) {
+                    return date && date.valueOf() > Date.now();
+                }
+            },
+            search: {
+                id: null,
+                channel: 0,
+                deviceId: null,
+                time: _now
+            },
+            columns: Object.freeze(
+                [
+                    '设备ID',
+                    '名称',
+                    '时间',
+                    '时长',
+                    '文件路径',
+                    '地址',
+                    '类型'
+                ].map((title) => ({
+                    title,
+                }))
+            )
+        }
+    },
+    computed: {
+        startTime() {
+            if (!this.search.time) {
+                return ''
+            }
+            const start = getOneTimeRange(this.search.time).start;
+            return new Date(start).toISOString();
+        },
+        endTime() {
+
+            if (!this.search.time) {
+                return ''
+            }
+
+            const end = getOneTimeRange(this.search.time).end;
+            return new Date(end).toISOString();
+        },
+        recordList() {
+            const list = this.records.map((record) => {
+                const startTime = new Date(record.StartTime).getTime();
+                const endTime = new Date(record.EndTime).getTime();
+                const timestamp = endTime - startTime;
+                const timeLength = formatTimeTips(timestamp);
+
+                const _startTime = parseTime(startTime);
+
+                record.length = timeLength;
+                record.time = _startTime;
+                return record;
+            });
+            return list;
+        }
+    },
+
+    methods: {
+        getList(options) {
+            this.search.id = options.id;
+            this.search.channel = options.channel;
+            this.search.deviceId = options.deviceId;
+            this._fetchList();
+        },
+
+        _fetchList() {
+            if (this.search.id && this.search.channel && this.startTime && this.endTime) {
+                const query = {
+                    id: this.search.id,
+                    channel: this.search.channel,
+                    startTime: this.search.startTime,
+                    endTime: this.search.endTime
+                };
+
+                this.ajax.get("/gb28181/query/records", query).then((x) => {
+
+                });
+            }
+        },
+        onClosePreview() {
+            this.$emit('close');
+        },
+        handleTimeChange(date) {
+            this.search.time = date;
+            this._fetchList();
+        },
+        play() {
+
+        }
+    }
+});
+
+// CONCATENATED MODULE: ./src/components/Records.vue?vue&type=script&lang=js&
+ /* harmony default export */ var components_Recordsvue_type_script_lang_js_ = (Recordsvue_type_script_lang_js_); 
+// EXTERNAL MODULE: ./src/components/Records.vue?vue&type=style&index=0&id=72d12ba2&scoped=true&lang=css&
+var Recordsvue_type_style_index_0_id_72d12ba2_scoped_true_lang_css_ = __webpack_require__("a1e1");
+
+// CONCATENATED MODULE: ./src/components/Records.vue
+
+
+
+
+
+
+/* normalize component */
+
+var Records_component = normalizeComponent(
+  components_Recordsvue_type_script_lang_js_,
+  Recordsvue_type_template_id_72d12ba2_scoped_true_render,
+  Recordsvue_type_template_id_72d12ba2_scoped_true_staticRenderFns,
+  false,
+  null,
+  "72d12ba2",
+  null
+  
+)
+
+/* harmony default export */ var Records = (Records_component.exports);
 // CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/App.vue?vue&type=script&lang=js&
 //
 //
@@ -3010,6 +3321,13 @@ var Player2_component = normalizeComponent(
 //
 //
 //
+//
+//
+//
+//
+
+
+
 
 
 
@@ -3019,6 +3337,7 @@ var Player2_component = normalizeComponent(
     components: {
         WebrtcPlayer: Player,
         WebrtcPlayer2: Player2,
+        Records: Records
     },
     props: {
         ListenAddr: String,
@@ -3039,6 +3358,13 @@ var Player2_component = normalizeComponent(
                 totalPage: 0,
                 currentPage: 0
             },
+            recordList: [],
+            recordModal: false,
+            recordSearch: {
+                id: null,
+                channel: 0,
+                deviceId: null
+            },
             context: {
                 id: null,
                 channel: 0,
@@ -3063,7 +3389,7 @@ var Player2_component = normalizeComponent(
                 "地址",
                 "状态",
                 "操作",
-            ]).map((title) => ({ title })),
+            ]).map((title) => ({title})),
         };
     },
     created() {
@@ -3080,11 +3406,22 @@ var Player2_component = normalizeComponent(
                 this.Devices = JSON.parse(evt.data) || [];
                 this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));
                 let channelList = [];
+                let recordList = [];
                 this.Devices.forEach((device) => {
                     const channels = device.Channels || [];
                     if (channels.length > 0) {
                         channelList = channelList.concat(channels);
                     }
+
+                    if (this.recordSearch.id && this.recordSearch.deviceId) {
+                        const channel = channels.filter((i) => {
+                            return i.DeviceID === this.recordSearch.deviceId && this.recordSearch.id === device.ID;
+                        });
+
+                        if (channel) {
+                            this.recordList = channel.Records || [];
+                        }
+                    }
                 });
                 if (channelList.length > 0) {
                     this.channelList = channelList;
@@ -3106,7 +3443,7 @@ var Player2_component = normalizeComponent(
         },
         sendPtz(options) {
             const ptzCmd = Object(ptz_cmd["b" /* getPTZCmd */])(options);
-            const ptzCmdStop = Object(ptz_cmd["b" /* getPTZCmd */])({ type: ptz_cmd["a" /* PTZ_TYPE */].stop });
+            const ptzCmdStop = Object(ptz_cmd["b" /* getPTZCmd */])({type: ptz_cmd["a" /* PTZ_TYPE */].stop});
             this.ajax
                 .get("/gb28181/control", {
                     id: this.context.id,
@@ -3130,21 +3467,26 @@ var Player2_component = normalizeComponent(
                 });
         },
 
-        handlePageChange(page){
+
+        sendQueryRecords(options) {
+
+        },
+
+        handlePageChange(page) {
             let showList = [];
             const onePageSize = this.pageInfo.onePageSize;
             const firstIndex = page * onePageSize - onePageSize;
-            const lastIndex = page * onePageSize - 1 ;
+            const lastIndex = page * onePageSize - 1;
             showList = this.channelList.filter((item, index) => {
                 return index >= firstIndex && index <= lastIndex;
             });
 
             this.channelShowList = showList;
-            if(showList.length > 0){
+            if (showList.length > 0) {
                 this.pageInfo.currentPage = page;
             }
         },
-        updatePageInfo(totalSize){
+        updatePageInfo(totalSize) {
             const onePageSize = this.pageInfo.onePageSize;
             let totalPage = totalSize / onePageSize;
 
@@ -3152,27 +3494,45 @@ var Player2_component = normalizeComponent(
                 totalPage = totalPage + 1;
             }
             this.pageInfo.totalPage = totalPage;
-            if(this.pageInfo.currentPage === 0){
+            if (this.pageInfo.currentPage === 0) {
                 this.handlePageChange(1)
             }
         },
         invite(id, channel, item) {
-            this.ajax.get("/gb28181/invite", { id, channel }).then((x) => {
+            this.ajax.get("/gb28181/invite", {id, channel}).then((x) => {
                 item.Connected = true;
             });
         },
         bye(id, channel, item) {
-            this.ajax.get("/gb28181/bye", { id, channel }).then((x) => {
+            this.ajax.get("/gb28181/bye", {id, channel}).then((x) => {
                 item.Connected = false;
             });
         },
+
+        getRecords(id, channel, item) {
+            this.recordSearch.id = id;
+            this.recordSearch.channel = channel;
+            this.recordSearch.deviceId = item.DeviceID;
+            this.recordModal = true;
+            this.$nextTick(() =>
+                this.$refs.records.getList(this.recordSearch)
+            );
+        },
+
+        initRecordSearch() {
+            this.recordModal = false;
+            this.recordSearch.id = null;
+            this.recordSearch.channel = null;
+            this.recordSearch.deviceId = null;
+            this.recordList = [];
+        }
     },
 });
 
 // CONCATENATED MODULE: ./src/App.vue?vue&type=script&lang=js&
  /* harmony default export */ var src_Appvue_type_script_lang_js_ = (Appvue_type_script_lang_js_); 
-// EXTERNAL MODULE: ./src/App.vue?vue&type=style&index=0&id=31458ad7&scoped=true&lang=css&
-var Appvue_type_style_index_0_id_31458ad7_scoped_true_lang_css_ = __webpack_require__("bf9c");
+// EXTERNAL MODULE: ./src/App.vue?vue&type=style&index=0&id=59b6c9a0&scoped=true&lang=css&
+var Appvue_type_style_index_0_id_59b6c9a0_scoped_true_lang_css_ = __webpack_require__("8fd7");
 
 // CONCATENATED MODULE: ./src/App.vue
 
@@ -3189,7 +3549,7 @@ var App_component = normalizeComponent(
   staticRenderFns,
   false,
   null,
-  "31458ad7",
+  "59b6c9a0",
   null
   
 )
@@ -3202,6 +3562,13 @@ var App_component = normalizeComponent(
 
 
 
+/***/ }),
+
+/***/ "fb17":
+/***/ (function(module, exports, __webpack_require__) {
+
+// extracted by mini-css-extract-plugin
+
 /***/ })
 
 /******/ })["default"];
diff --git a/ui/dist/plugin-gb28181.common.js.map b/ui/dist/plugin-gb28181.common.js.map
index 4284778..28e8248 100644
--- a/ui/dist/plugin-gb28181.common.js.map
+++ b/ui/dist/plugin-gb28181.common.js.map
@@ -1 +1 @@
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Length must be a multiple of 4')\n  }\n\n  // Trim off extra bytes after placeholder bytes are found\n  // See: https://github.com/beatgammit/base64-js/issues/42\n  var validLen = b64.indexOf('=')\n  if (validLen === -1) validLen = len\n\n  var placeHoldersLen = validLen === len\n    ? 0\n    : 4 - (validLen % 4)\n\n  return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n  var tmp\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n\n  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n  var curByte = 0\n\n  // if there are placeholders, only get up to the last complete 4 chars\n  var len = placeHoldersLen > 0\n    ? validLen - 4\n    : validLen\n\n  var i\n  for (i = 0; i < len; i += 4) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 18) |\n      (revLookup[b64.charCodeAt(i + 1)] << 12) |\n      (revLookup[b64.charCodeAt(i + 2)] << 6) |\n      revLookup[b64.charCodeAt(i + 3)]\n    arr[curByte++] = (tmp >> 16) & 0xFF\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 2) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 2) |\n      (revLookup[b64.charCodeAt(i + 1)] >> 4)\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 1) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 10) |\n      (revLookup[b64.charCodeAt(i + 1)] << 4) |\n      (revLookup[b64.charCodeAt(i + 2)] >> 2)\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  return arr\n}\n\nfunction tripletToBase64 (num) {\n  return lookup[num >> 18 & 0x3F] +\n    lookup[num >> 12 & 0x3F] +\n    lookup[num >> 6 & 0x3F] +\n    lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n  var tmp\n  var output = []\n  for (var i = start; i < end; i += 3) {\n    tmp =\n      ((uint8[i] << 16) & 0xFF0000) +\n      ((uint8[i + 1] << 8) & 0xFF00) +\n      (uint8[i + 2] & 0xFF)\n    output.push(tripletToBase64(tmp))\n  }\n  return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n  var tmp\n  var len = uint8.length\n  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n  var parts = []\n  var maxChunkLength = 16383 // must be multiple of 3\n\n  // go through the array every three bytes, we'll deal with trailing stuff later\n  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))\n  }\n\n  // pad the end with zeros, but make sure to not forget the extra bytes\n  if (extraBytes === 1) {\n    tmp = uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 2] +\n      lookup[(tmp << 4) & 0x3F] +\n      '=='\n    )\n  } else if (extraBytes === 2) {\n    tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 10] +\n      lookup[(tmp >> 4) & 0x3F] +\n      lookup[(tmp << 2) & 0x3F] +\n      '='\n    )\n  }\n\n  return parts.join('')\n}\n","// extracted by mini-css-extract-plugin","// addapted from the document.currentScript polyfill by Adam Miller\n// MIT license\n// source: https://github.com/amiller-gh/currentScript-polyfill\n\n// added support for Firefox https://bugzilla.mozilla.org/show_bug.cgi?id=1620505\n\n(function (root, factory) {\n  if (typeof define === 'function' && define.amd) {\n    define([], factory);\n  } else if (typeof module === 'object' && module.exports) {\n    module.exports = factory();\n  } else {\n    root.getCurrentScript = factory();\n  }\n}(typeof self !== 'undefined' ? self : this, function () {\n  function getCurrentScript () {\n    var descriptor = Object.getOwnPropertyDescriptor(document, 'currentScript')\n    // for chrome\n    if (!descriptor && 'currentScript' in document && document.currentScript) {\n      return document.currentScript\n    }\n\n    // for other browsers with native support for currentScript\n    if (descriptor && descriptor.get !== getCurrentScript && document.currentScript) {\n      return document.currentScript\n    }\n  \n    // IE 8-10 support script readyState\n    // IE 11+ & Firefox support stack trace\n    try {\n      throw new Error();\n    }\n    catch (err) {\n      // Find the second match for the \"at\" string to get file src url from stack.\n      var ieStackRegExp = /.*at [^(]*\\((.*):(.+):(.+)\\)$/ig,\n        ffStackRegExp = /@([^@]*):(\\d+):(\\d+)\\s*$/ig,\n        stackDetails = ieStackRegExp.exec(err.stack) || ffStackRegExp.exec(err.stack),\n        scriptLocation = (stackDetails && stackDetails[1]) || false,\n        line = (stackDetails && stackDetails[2]) || false,\n        currentLocation = document.location.href.replace(document.location.hash, ''),\n        pageSource,\n        inlineScriptSourceRegExp,\n        inlineScriptSource,\n        scripts = document.getElementsByTagName('script'); // Live NodeList collection\n  \n      if (scriptLocation === currentLocation) {\n        pageSource = document.documentElement.outerHTML;\n        inlineScriptSourceRegExp = new RegExp('(?:[^\\\\n]+?\\\\n){0,' + (line - 2) + '}[^<]*<script>([\\\\d\\\\D]*?)<\\\\/script>[\\\\d\\\\D]*', 'i');\n        inlineScriptSource = pageSource.replace(inlineScriptSourceRegExp, '$1').trim();\n      }\n  \n      for (var i = 0; i < scripts.length; i++) {\n        // If ready state is interactive, return the script tag\n        if (scripts[i].readyState === 'interactive') {\n          return scripts[i];\n        }\n  \n        // If src matches, return the script tag\n        if (scripts[i].src === scriptLocation) {\n          return scripts[i];\n        }\n  \n        // If inline source matches, return the script tag\n        if (\n          scriptLocation === currentLocation &&\n          scripts[i].innerHTML &&\n          scripts[i].innerHTML.trim() === inlineScriptSource\n        ) {\n          return scripts[i];\n        }\n      }\n  \n      // If no match, return null\n      return null;\n    }\n  };\n\n  return getCurrentScript\n}));\n","/**\n * Date:2020/11/9\n * Desc:\n */\n/**\n * Date:2020/11/2\n * Desc: ptz cmd 封装\n * cmd[0] //首字节以05H开头\n * cmd[1] //组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n *        //  校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n * cmd[2] //地址的低8位？？？什么地址，地址范围000h ~ FFFh(0~4095),其中000h为广播地址\n * cmd[3] //指令码\n * cmd[4] //数据1,水平控制速度、聚焦速度\n * cmd[5] //数据2，垂直控制速度、光圈速度\n * cmd[6] // 高4位为数据3=变倍控制速度，低4位为地址高4位\n */\n\nconst PTZ_TYPE = {\n    stop: 'stop',\n    right: 'right',\n    left: 'left',\n    up: 'up',\n    down: 'down',\n    leftUp: 'leftUp',\n    leftDown: 'leftDown',\n    rightUp: 'rightUp',\n    rightDown: 'rightDown',\n    zoomFar: 'zoomFar',\n    zoomNear: 'zoomNear',\n    apertureFar: 'apertureFar',\n    apertureNear: 'apertureNear',\n    focusFar: 'focusFar',\n    focusNear: 'focusNear',\n    setPos: 'setPos',\n    calPos: 'calPos',\n    delPos: 'delPos'\n};\n\nconst PTZ_CMD_TYPE = {\n    stop: 0x00,\n\n    right: 0x01,\n    left: 0x02,\n    up: 0x08,\n    down: 0x04,\n\n    leftUp: 0x0A,\n    leftDown: 0x06,\n    rightUp: 0x09,\n    rightDown: 0x05,\n\n    zoomFar: 0x10, // 镜头 放大\n    zoomNear: 0x20,  // 镜头 缩小\n\n    apertureFar: 0x48, // 光圈 缩小\n    apertureNear: 0x44, // 光圈 放大\n\n    focusFar: 0x42, // 聚焦 近\n    focusNear: 0x41, // 聚焦 远\n\n    setPos: 0x81,\n    calPos: 0x82,\n    delPos: 0x83\n};\n\nconst SPEED_ARRAY = [0x19, 0x32, 0x4b, 0x64, 0x7d, 0x96, 0xAF, 0xC8, 0xE1, 0xFA];\nconst POSITION_ARRAY = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10];\n\n// 获取 direction 方向型\n/**\n *\n * @param options\n *        type:\n *        speed:default 5\n *        index:\n * @returns {string}\n */\nfunction getPTZCmd(options) {\n    const {type, speed, index} = options;\n    const ptzSpeed = getPTZSpeed(speed);\n    let indexValue3, indexValue4, indexValue5, indexValue6;\n    indexValue3 = PTZ_CMD_TYPE[type];\n    switch (type) {\n        case PTZ_TYPE.up:\n        case PTZ_TYPE.down:\n        case PTZ_TYPE.apertureFar:\n        case PTZ_TYPE.apertureNear:\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.right:\n        case PTZ_TYPE.left:\n        case PTZ_TYPE.focusFar:\n        case PTZ_TYPE.focusNear:\n            indexValue4 = ptzSpeed;\n            break;\n        case PTZ_TYPE.leftUp:\n        case PTZ_TYPE.leftDown:\n        case PTZ_TYPE.rightUp:\n        case PTZ_TYPE.rightDown:\n            indexValue4 = ptzSpeed;\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.zoomFar:\n        case PTZ_TYPE.zoomNear:\n            indexValue6 = 0x10;\n            break;\n        case PTZ_TYPE.calPos:\n        case PTZ_TYPE.delPos:\n        case PTZ_TYPE.setPos:\n            indexValue5 = getPTZPositionIndex(index);\n            break;\n        default:\n            break;\n    }\n    return ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6);\n}\n\nfunction getPTZSpeed(speed) {\n    speed = speed || 5;\n    const speedIndex = speed - 1;\n    const ptzSpeed = SPEED_ARRAY[speedIndex] || SPEED_ARRAY[4];\n    return ptzSpeed;\n}\n\nfunction getPTZPositionIndex(index) {\n    return POSITION_ARRAY[index - 1];\n}\n\nfunction ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6) {\n    //\n    let cmd = Buffer.alloc(8);\n    // 首字节以05H开头\n    cmd[0] = 0xA5;\n    // 组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n    cmd[1] = 0x0F;\n    // 校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n    cmd[2] = 0x01;\n    //\n    if (indexValue3) {\n        cmd[3] = indexValue3;\n    }\n    if (indexValue4) {\n        cmd[4] = indexValue4;\n    }\n    if (indexValue5) {\n        cmd[5] = indexValue5;\n    }\n    if (indexValue6) {\n        cmd[6] = indexValue6;\n    }\n\n    cmd[7] = (cmd[0] + cmd[1] + cmd[2] + cmd[3] + cmd[4] + cmd[5] + cmd[6]) % 256;\n\n    return bytes2HexString(cmd);\n}\n\nfunction bytes2HexString(byte) {\n    let hexs = \"\";\n    for (let i = 0; i < byte.length; i++) {\n        let hex = (byte[i]).toString(16);\n        if (hex.length === 1) {\n            hex = '0' + hex;\n        }\n        hexs += hex.toUpperCase();\n    }\n    return hexs;\n}\n\nexport {\n    getPTZCmd,\n    PTZ_TYPE\n}\n","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <http://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n *     incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n  ? global.TYPED_ARRAY_SUPPORT\n  : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n  try {\n    var arr = new Uint8Array(1)\n    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n    return arr.foo() === 42 && // typed array instances can be augmented\n        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n  } catch (e) {\n    return false\n  }\n}\n\nfunction kMaxLength () {\n  return Buffer.TYPED_ARRAY_SUPPORT\n    ? 0x7fffffff\n    : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n  if (kMaxLength() < length) {\n    throw new RangeError('Invalid typed array length')\n  }\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = new Uint8Array(length)\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    if (that === null) {\n      that = new Buffer(length)\n    }\n    that.length = length\n  }\n\n  return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n    return new Buffer(arg, encodingOrOffset, length)\n  }\n\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new Error(\n        'If encoding is specified then the first argument must be a string'\n      )\n    }\n    return allocUnsafe(this, arg)\n  }\n  return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n  arr.__proto__ = Buffer.prototype\n  return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n  if (typeof value === 'number') {\n    throw new TypeError('\"value\" argument must not be a number')\n  }\n\n  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n    return fromArrayBuffer(that, value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'string') {\n    return fromString(that, value, encodingOrOffset)\n  }\n\n  return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n  Buffer.prototype.__proto__ = Uint8Array.prototype\n  Buffer.__proto__ = Uint8Array\n  if (typeof Symbol !== 'undefined' && Symbol.species &&\n      Buffer[Symbol.species] === Buffer) {\n    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n    Object.defineProperty(Buffer, Symbol.species, {\n      value: null,\n      configurable: true\n    })\n  }\n}\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be a number')\n  } else if (size < 0) {\n    throw new RangeError('\"size\" argument must not be negative')\n  }\n}\n\nfunction alloc (that, size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(that, size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpretted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(that, size).fill(fill, encoding)\n      : createBuffer(that, size).fill(fill)\n  }\n  return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n  assertSize(size)\n  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) {\n    for (var i = 0; i < size; ++i) {\n      that[i] = 0\n    }\n  }\n  return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('\"encoding\" must be a valid string encoding')\n  }\n\n  var length = byteLength(string, encoding) | 0\n  that = createBuffer(that, length)\n\n  var actual = that.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    that = that.slice(0, actual)\n  }\n\n  return that\n}\n\nfunction fromArrayLike (that, array) {\n  var length = array.length < 0 ? 0 : checked(array.length) | 0\n  that = createBuffer(that, length)\n  for (var i = 0; i < length; i += 1) {\n    that[i] = array[i] & 255\n  }\n  return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n  array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\\'offset\\' is out of bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\\'length\\' is out of bounds')\n  }\n\n  if (byteOffset === undefined && length === undefined) {\n    array = new Uint8Array(array)\n  } else if (length === undefined) {\n    array = new Uint8Array(array, byteOffset)\n  } else {\n    array = new Uint8Array(array, byteOffset, length)\n  }\n\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = array\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    that = fromArrayLike(that, array)\n  }\n  return that\n}\n\nfunction fromObject (that, obj) {\n  if (Buffer.isBuffer(obj)) {\n    var len = checked(obj.length) | 0\n    that = createBuffer(that, len)\n\n    if (that.length === 0) {\n      return that\n    }\n\n    obj.copy(that, 0, 0, len)\n    return that\n  }\n\n  if (obj) {\n    if ((typeof ArrayBuffer !== 'undefined' &&\n        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n      if (typeof obj.length !== 'number' || isnan(obj.length)) {\n        return createBuffer(that, 0)\n      }\n      return fromArrayLike(that, obj)\n    }\n\n    if (obj.type === 'Buffer' && isArray(obj.data)) {\n      return fromArrayLike(that, obj.data)\n    }\n  }\n\n  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < kMaxLength()` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= kMaxLength()) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + kMaxLength().toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError('Arguments must be Buffers')\n  }\n\n  if (a === b) return 0\n\n  var x = a.length\n  var y = b.length\n\n  for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  var i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  var buffer = Buffer.allocUnsafe(length)\n  var pos = 0\n  for (i = 0; i < list.length; ++i) {\n    var buf = list[i]\n    if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    }\n    buf.copy(buffer, pos)\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    string = '' + string\n  }\n\n  var len = string.length\n  if (len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n      case undefined:\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) return utf8ToBytes(string).length // assume utf8\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  var loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  var i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  var len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (var i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  var len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (var i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  var len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (var i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  var length = this.length | 0\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  var str = ''\n  var max = exports.INSPECT_MAX_BYTES\n  if (this.length > 0) {\n    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n    if (this.length > max) str += ' ... '\n  }\n  return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError('Argument must be a Buffer')\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  var x = thisEnd - thisStart\n  var y = end - start\n  var len = Math.min(x, y)\n\n  var thisCopy = this.slice(thisStart, thisEnd)\n  var targetCopy = target.slice(start, end)\n\n  for (var i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset  // Coerce to Number.\n  if (isNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (Buffer.TYPED_ARRAY_SUPPORT &&\n        typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  var indexSize = 1\n  var arrLength = arr.length\n  var valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  var i\n  if (dir) {\n    var foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      var found = true\n      for (var j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  var remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  // must be an even number of digits\n  var strLen = string.length\n  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  for (var i = 0; i < length; ++i) {\n    var parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (isNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n  return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset | 0\n    if (isFinite(length)) {\n      length = length | 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  // legacy write(string, encoding, offset, length) - remove in v0.13\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  var remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n        return asciiWrite(this, string, offset, length)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Write(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  var res = []\n\n  var i = start\n  while (i < end) {\n    var firstByte = buf[i]\n    var codePoint = null\n    var bytesPerSequence = (firstByte > 0xEF) ? 4\n      : (firstByte > 0xDF) ? 3\n      : (firstByte > 0xBF) ? 2\n      : 1\n\n    if (i + bytesPerSequence <= end) {\n      var secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  var len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  var res = ''\n  var i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  var len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  var out = ''\n  for (var i = start; i < end; ++i) {\n    out += toHex(buf[i])\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  var bytes = buf.slice(start, end)\n  var res = ''\n  for (var i = 0; i < bytes.length; i += 2) {\n    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  var len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  var newBuf\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    newBuf = this.subarray(start, end)\n    newBuf.__proto__ = Buffer.prototype\n  } else {\n    var sliceLen = end - start\n    newBuf = new Buffer(sliceLen, undefined)\n    for (var i = 0; i < sliceLen; ++i) {\n      newBuf[i] = this[i + start]\n    }\n  }\n\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  var val = this[offset + --byteLength]\n  var mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var i = byteLength\n  var mul = 1\n  var val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var mul = 1\n  var i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n      (littleEndian ? i : 1 - i) * 8\n  }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffffffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n  }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset + 3] = (value >>> 24)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 1] = (value >>> 8)\n    this[offset] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = 0\n  var mul = 1\n  var sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  var sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 3] = (value >>> 24)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  var len = end - start\n  var i\n\n  if (this === target && start < targetStart && targetStart < end) {\n    // descending copy from end\n    for (i = len - 1; i >= 0; --i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n    // ascending copy from start\n    for (i = 0; i < len; ++i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, start + len),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (val.length === 1) {\n      var code = val.charCodeAt(0)\n      if (code < 256) {\n        val = code\n      }\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  var i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    var bytes = Buffer.isBuffer(val)\n      ? val\n      : utf8ToBytes(new Buffer(val, encoding).toString())\n    var len = bytes.length\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction stringtrim (str) {\n  if (str.trim) return str.trim()\n  return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n  if (n < 16) return '0' + n.toString(16)\n  return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  var codePoint\n  var length = string.length\n  var leadSurrogate = null\n  var bytes = []\n\n  for (var i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        } else if (i + 1 === length) {\n          // unpaired lead\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        }\n\n        // valid lead\n        leadSurrogate = codePoint\n\n        continue\n      }\n\n      // 2 leads in a row\n      if (codePoint < 0xDC00) {\n        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n        leadSurrogate = codePoint\n        continue\n      }\n\n      // valid surrogate pair\n      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n    } else if (leadSurrogate) {\n      // valid bmp char, but last char was a lead\n      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n    }\n\n    leadSurrogate = null\n\n    // encode utf8\n    if (codePoint < 0x80) {\n      if ((units -= 1) < 0) break\n      bytes.push(codePoint)\n    } else if (codePoint < 0x800) {\n      if ((units -= 2) < 0) break\n      bytes.push(\n        codePoint >> 0x6 | 0xC0,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x10000) {\n      if ((units -= 3) < 0) break\n      bytes.push(\n        codePoint >> 0xC | 0xE0,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x110000) {\n      if ((units -= 4) < 0) break\n      bytes.push(\n        codePoint >> 0x12 | 0xF0,\n        codePoint >> 0xC & 0x3F | 0x80,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else {\n      throw new Error('Invalid code point')\n    }\n  }\n\n  return bytes\n}\n\nfunction asciiToBytes (str) {\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    // Node's code seems to be doing this and not & 0x7F..\n    byteArray.push(str.charCodeAt(i) & 0xFF)\n  }\n  return byteArray\n}\n\nfunction utf16leToBytes (str, units) {\n  var c, hi, lo\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    if ((units -= 2) < 0) break\n\n    c = str.charCodeAt(i)\n    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xmlns=\"http://www.w3.org/2000/svg\"><path d=\"M512 170.666667A341.333333 341.333333 0 1 1 170.666667 512 341.333333 341.333333 0 0 1 512 170.666667m0-42.666667a384 384 0 1 0 384 384A384 384 0 0 0 512 128z\"  /><path fill=\"#333333\" d=\"M298.666667 533.333333H170.666667a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM853.333333 533.333333h-128a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM512 320a21.333333 21.333333 0 0 1-21.333333-21.333333V170.666667a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333333zM512 874.666667a21.333333 21.333333 0 0 1-21.333333-21.333334v-128a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333334z\"  /></svg>\n      </div>\n      <div class=\"control5\">\n        <i-select v-model=\"ptzPositionIndex\" style=\"width: 100px\">\n          <Option v-for=\"n in 10\" :value=\"n\" :key=\"n\">预置点{{n}}</Option>\n        </i-select>\n        <i-button type=\"primary\" @click=\"ptzCmd(ptzType.setPos)\">设置</i-button>\n        <i-button type=\"success\" @click=\"ptzCmd(ptzType.calPos)\">调用</i-button>\n        <i-button type=\"error\" @click=\"ptzCmd(ptzType.delPos)\">删除</i-button>\n        速度：\n        <InputNumber :max=\"10\" :min=\"1\" v-model=\"ptzSpeed\"></InputNumber>\n      </div>\n    </div>\n    <div slot=\"footer\">\n      <mu-badge v-if=\"remoteSDP\">\n        <a slot=\"content\" :href=\"remoteSDPURL\" download=\"remoteSDP.txt\">remoteSDP</a>\n      </mu-badge>\n      <mu-badge v-if=\"localSDP\">\n        <a slot=\"content\" :href=\"localSDPURL\" download=\"localSDP.txt\">localSDP</a>\n      </mu-badge>\n    </div>\n  </Modal>\n</template>\n<script>\n  import {PTZ_TYPE} from \"../utils/ptz-cmd\";\n  const PTZ_DIRECTION_ARRAY = [PTZ_TYPE.up,PTZ_TYPE.right,PTZ_TYPE.down,PTZ_TYPE.left,PTZ_TYPE.leftUp,PTZ_TYPE.rightUp,PTZ_TYPE.leftDown,PTZ_TYPE.rightDown];\n  let pc = null;\nexport default {\n  data() {\n    return {\n      iceConnectionState: pc && pc.iceConnectionState,\n      stream: null,\n      localSDP: \"\",\n      remoteSDP: \"\",\n      remoteSDPURL: \"\",\n      localSDPURL: \"\",\n      streamPath: \"\",\n      ptzSpeed:5,\n      ptzPositionIndex:1,\n      ptzType:PTZ_TYPE,\n    };\n  },\n  props:{\n    PublicIP:String\n  },\n    methods: {\n        async play(streamPath) {\n            pc = new RTCPeerConnection();\n            pc.addTransceiver('video',{\n              direction:'recvonly'\n            })\n            this.streamPath = streamPath;\n            pc.onsignalingstatechange = e => {\n                //console.log(e);\n            };\n            pc.oniceconnectionstatechange = e => {\n                this.$toast.info(pc.iceConnectionState);\n                this.iceConnectionState = pc.iceConnectionState;\n            };\n            pc.onicecandidate = event => {\n                console.log(event)\n            };\n            pc.ontrack = event => {\n               // console.log(event);\n                if (event.track.kind == \"video\")\n                    this.stream = event.streams[0];\n            };\n            await pc.setLocalDescription(await pc.createOffer());\n            this.localSDP = pc.localDescription.sdp;\n            this.localSDPURL = URL.createObjectURL(\n                new Blob([this.localSDP], { type: \"text/plain\" })\n            );\n            const result = await this.ajax({\n                type: \"POST\",\n                processData: false,\n                data: JSON.stringify(pc.localDescription.toJSON()),\n                url: \"/webrtc/play?streamPath=\" + this.streamPath,\n                dataType: \"json\"\n            });\n            if (result.errmsg) {\n                this.$toast.error(result.errmsg);\n                return;\n            } else {\n                this.remoteSDP = result.sdp;\n                this.remoteSDPURL = URL.createObjectURL(new Blob([this.remoteSDP], { type: \"text/plain\" }));\n            }\n            await pc.setRemoteDescription(new RTCSessionDescription(result));\n        },\n        ptzCmdDirection(direction){\n          const type = PTZ_DIRECTION_ARRAY[direction-1];\n          this.ptzCmd(type);\n        },\n        startPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.right,true);\n        },\n        stopPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.stop);\n        },\n        ptzCmd(type,isCycling){\n          this.$emit('ptz',{type:type,speed:this.ptzSpeed,index:this.ptzPositionIndex,cycle:isCycling})\n        },\n        onClosePreview() {\n            pc.close();\n        }\n    }\n};\n</script>\n<style scoped>\n  .arrow1{\n    grid-column: 2;\n    grid-row: 1;\n  }\n  .arrow2{\n    transform: rotate(90deg);\n    grid-column: 3;\n    grid-row: 2;\n  }\n  .arrow3{\n    transform: rotate(180deg);\n    grid-column: 2;\n    grid-row: 3;\n  }\n  .arrow4{\n    transform: rotate(270deg);\n    grid-column: 1;\n    grid-row: 2;\n  }\n\n  .arrow5{\n    transform: rotate(-45deg);\n    grid-column: 1;\n    grid-row: 1;\n  }\n\n  .arrow6{\n    transform: rotate(45deg);\n    grid-column: 3;\n    grid-row: 1;\n  }\n\n  .arrow7{\n    transform: rotate(-135deg);\n    grid-column: 1;\n    grid-row: 3;\n  }\n\n  .arrow8{\n    transform: rotate(135deg);\n    grid-column: 3;\n    grid-row: 3;\n  }\n\n  .arrow9{\n    grid-column: 2;\n    grid-row: 2;\n  }\n\n.container {\n  position: relative;\n  height: 350px;\n}\n.control {\n  position: absolute;\n  top: 20px;\n  right: 0;\n  display: grid;\n  grid-template-columns: repeat(3, 33.33%);\n  grid-template-rows: repeat(3, 33.33%);\n  width: 192px;\n  height: 192px;\n}\n\n.control2{\n  top: 210px;\n}\n\n.control3{\n  top: 260px;\n}\n\n.control4{\n  top: 310px;\n}\n\n.control5{\n  top: 360px;\n}\n\n.control >* {\n  cursor: pointer;\n  fill: gray;\n  width: 50px;\n  height: 50px;\n}\n\n.control5 >*{\n  margin-right: 10px;\n}\n\n.control2 >*,.control3 >*,.control4 >*{\n  width: 40px;\n  height: 40px;\n}\n\n.control >*:hover,.cycling{\n  fill: cyan\n}\n\n\n\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"","/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nexport default function normalizeComponent (\n  scriptExports,\n  render,\n  staticRenderFns,\n  functionalTemplate,\n  injectStyles,\n  scopeId,\n  moduleIdentifier, /* server only */\n  shadowMode /* vue-cli only */\n) {\n  // Vue.extend constructor export interop\n  var options = typeof scriptExports === 'function'\n    ? scriptExports.options\n    : scriptExports\n\n  // render functions\n  if (render) {\n    options.render = render\n    options.staticRenderFns = staticRenderFns\n    options._compiled = true\n  }\n\n  // functional template\n  if (functionalTemplate) {\n    options.functional = true\n  }\n\n  // scopedId\n  if (scopeId) {\n    options._scopeId = 'data-v-' + scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = shadowMode\n      ? function () {\n        injectStyles.call(\n          this,\n          (options.functional ? this.parent : this).$root.$options.shadowRoot\n        )\n      }\n      : injectStyles\n  }\n\n  if (hook) {\n    if (options.functional) {\n      // for template-only hot-reload because in that case the render fn doesn't\n      // go through the normalizer\n      options._injectStyles = hook\n      // register for functional component in vue file\n      var originalRender = options.render\n      options.render = function renderWithStyleInjection (h, context) {\n        hook.call(context)\n        return originalRender(h, context)\n      }\n    } else {\n      // inject component registration as beforeCreate hook\n      var existing = options.beforeCreate\n      options.beforeCreate = existing\n        ? [].concat(existing, hook)\n        : [hook]\n    }\n  }\n\n  return {\n    exports: scriptExports,\n    options: options\n  }\n}\n","import { render, staticRenderFns } from \"./Player.vue?vue&type=template&id=76558468&scoped=true&\"\nimport script from \"./Player.vue?vue&type=script&lang=js&\"\nexport * from \"./Player.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player.vue?vue&type=style&index=0&id=76558468&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"76558468\",\n  null\n  \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:\"player-wrap\"},[(_vm.rtcStream)?[_c('video',{attrs:{\"autoplay\":\"\",\"muted\":\"\",\"controls\":\"\"},domProps:{\"srcObject\":_vm.rtcStream,\"muted\":true}})]:_vm._e()],2)}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","<template>\n    <div class=\"player-wrap\">\n        <template v-if=\"rtcStream\">\n            <video :srcObject.prop=\"rtcStream\" autoplay muted controls></video>\n        </template>\n    </div>\n</template>\n\n<script>\n    export default {\n        name: \"WebrtcPlayer\",\n        rtcPeerConnection: null,\n        data() {\n            return {\n                iceConnectionState: '',\n                rtcPeerConnectionInit: false,\n                rtcStream: null\n            }\n        },\n        props: {\n            streamPath: {\n                type: String,\n                default: ''\n            }\n        },\n        async created() {\n            await this.initRtcPeerConnection();\n            console.log('initRtcPeerConnectioned');\n            if (this.streamPath) {\n                await this.play(this.streamPath);\n                console.log('played');\n            }\n        },\n        methods: {\n            async initRtcPeerConnection() {\n                const rtcPeerConnection = new RTCPeerConnection();\n\n                rtcPeerConnection.addTransceiver('video', {\n                    direction: \"recvonly\"\n                });\n\n                rtcPeerConnection.onsignalingstatechange = e => {\n                    console.log('onsignalingstatechange', e);\n                };\n\n                rtcPeerConnection.oniceconnectionstatechange = e => {\n                    console.log('oniceconnectionstatechange', rtcPeerConnection.iceConnectionState);\n                };\n\n                rtcPeerConnection.onicecandidate = event => {\n                    console.log('onicecandidate', event);\n                };\n\n                rtcPeerConnection.ontrack = event => {\n                    console.log('ontrack', event);\n                    if (event.track.kind === \"video\") {\n                        this.rtcStream = event.streams[0];\n                    }\n                };\n\n                const rtcSessionDescriptionInit = await rtcPeerConnection.createOffer();\n                await rtcPeerConnection.setLocalDescription(rtcSessionDescriptionInit);\n                this.rtcPeerConnectionInit = true;\n                this.$options.rtcPeerConnection = rtcPeerConnection;\n            },\n\n            //\n            async play(streamPath) {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                const localDescriptionData = rtcPeerConnection.localDescription.toJSON();\n                const result = await this.ajax({\n                    type: \"POST\",\n                    processData: false,\n                    data: JSON.stringify(localDescriptionData),\n                    url: \"/webrtc/play?streamPath=\" + streamPath,\n                    dataType: \"json\"\n                });\n                if (result.errmsg) {\n                    console.error(result.errmsg);\n                    return;\n                }\n                //\n                rtcPeerConnection.setRemoteDescription(new RTCSessionDescription({\n                    type: result.type,\n                    sdp: result.sdp\n                }));\n            },\n            close() {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                rtcPeerConnection && rtcPeerConnection.close();\n            }\n        },\n        destroyed() {\n            this.close();\n        }\n    }\n</script>\n\n<style scoped>\n    .player-wrap {\n        width: 100%;\n        height: 100%;\n        border-radius: 4px;\n        box-shadow: 0 0 5px #40d3fc, inset 0 0 5px #40d3fc, 0 0 0 1px #40d3fc;\n    }\n\n    .player-wrap video {\n        width: 100%;\n        height: 100%;\n    }\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Player2.vue?vue&type=template&id=3d23233a&scoped=true&\"\nimport script from \"./Player2.vue?vue&type=script&lang=js&\"\nexport * from \"./Player2.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player2.vue?vue&type=style&index=0&id=3d23233a&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"3d23233a\",\n  null\n  \n)\n\nexport default component.exports","<template>\n    <div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 0\">\n            <mu-data-table :data=\"Devices\" :columns=\"columns\">\n                <template #expand=\"prop\">\n                    <mu-data-table\n                        :data=\"prop.row.Channels\"\n                        :columns=\"columns2\"\n                    >\n                        <template #default=\"{ row: item, $index }\">\n                            <td>{{ item.DeviceID }}</td>\n                            <td>{{ item.Name }}</td>\n                            <td>{{ item.Manufacturer }}</td>\n                            <td>{{ item.Address }}</td>\n                            <td>{{ item.Status }}</td>\n                            <td>\n                                <mu-button\n                                    flat\n                                    v-if=\"item.Connected\"\n                                    @click=\"ptz(prop.row.ID, $index, item)\"\n                                    >云台\n                                </mu-button>\n                                <mu-button\n                                    flat\n                                    v-if=\"item.Connected\"\n                                    @click=\"bye(prop.row.ID, $index)\"\n                                    >断开</mu-button\n                                >\n                                <mu-button\n                                    v-else\n                                    flat\n                                    @click=\"invite(prop.row.ID, $index, item)\"\n                                    >连接\n                                </mu-button>\n                            </td>\n                        </template>\n                    </mu-data-table>\n                </template>\n                <template #default=\"{ row: item }\">\n                    <td>{{ item.ID }}</td>\n                    <td>{{ item.Addr }}</td>\n                    <td>{{ item.Channels ? item.Channels.length : 0 }}</td>\n                    <td>\n                        <StartTime :value=\"item.RegisterTime\"></StartTime>\n                    </td>\n                    <td>\n                        <StartTime :value=\"item.UpdateTime\"></StartTime>\n                    </td>\n                    <td>{{ item.Status }}</td>\n                </template>\n            </mu-data-table>\n        </div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 1\">\n            <div class=\"flex-box\">\n                <template v-for=\"(channel,index) in channelShowList\">\n                    <div class=\"flex-item\" :key=\"index\" v-if=\"channel.DeviceID\">\n                        <webrtc-player2 :stream-path=\"'gb28181/'+channel.DeviceID\"></webrtc-player2>\n                    </div>\n                </template>\n            </div>\n            <template v-if=\"channelList.length > 0\">\n                <Page :total=\"channelList.length\" :page-size=\"pageInfo.onePageSize\" @on-change=\"handlePageChange\"></Page>\n            </template>\n        </div>\n        <webrtc-player\n            ref=\"player\"\n            @ptz=\"sendPtz\"\n            v-model=\"previewStreamPath\"\n            :PublicIP=\"PublicIP\"\n        ></webrtc-player>\n    </div>\n</template>\n<script>\nimport WebrtcPlayer from \"./components/Player\";\nimport WebrtcPlayer2 from \"./components/Player2\";\nimport { getPTZCmd, PTZ_TYPE } from \"./utils/ptz-cmd\";\n\nexport default {\n    components: {\n        WebrtcPlayer,\n        WebrtcPlayer2,\n    },\n    props: {\n        ListenAddr: String,\n    },\n    computed: {\n        PublicIP() {\n            return this.ListenAddr.split(\":\")[0];\n        },\n    },\n    data() {\n        return {\n            Devices: [],\n            previewStreamPath: false,\n            channelList: [],\n            channelShowList: [],\n            pageInfo: {\n                onePageSize: 9,\n                totalPage: 0,\n                currentPage: 0\n            },\n            context: {\n                id: null,\n                channel: 0,\n                item: null,\n            },\n            columns: Object.freeze(\n                [\n                    \"设备号\",\n                    \"地址\",\n                    \"通道数\",\n                    \"注册时间\",\n                    \"更新时间\",\n                    \"状态\",\n                ].map((title) => ({\n                    title,\n                }))\n            ),\n            columns2: Object.freeze([\n                \"通道编号\",\n                \"名称\",\n                \"厂商\",\n                \"地址\",\n                \"状态\",\n                \"操作\",\n            ]).map((title) => ({ title })),\n        };\n    },\n    created() {\n        this.fetchlist();\n    },\n    mounted() {\n        this.$parent.titleTabs = [\"列表\", \"N路播放\"];\n    },\n    methods: {\n        fetchlist() {\n            const listES = new EventSource(this.apiHost + \"/gb28181/list\");\n            listES.onmessage = (evt) => {\n                if (!evt.data) return;\n                this.Devices = JSON.parse(evt.data) || [];\n                this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));\n                let channelList = [];\n                this.Devices.forEach((device) => {\n                    const channels = device.Channels || [];\n                    if (channels.length > 0) {\n                        channelList = channelList.concat(channels);\n                    }\n                });\n                if (channelList.length > 0) {\n                    this.channelList = channelList;\n                    this.updatePageInfo(channelList.length);\n                }\n            };\n            this.$once(\"hook:destroyed\", () => listES.close());\n        },\n        ptz(id, channel, item) {\n            this.context = {\n                id,\n                channel,\n                item,\n            };\n            this.previewStreamPath = true;\n            this.$nextTick(() =>\n                this.$refs.player.play(\"gb28181/\" + item.DeviceID)\n            );\n        },\n        sendPtz(options) {\n            const ptzCmd = getPTZCmd(options);\n            const ptzCmdStop = getPTZCmd({ type: PTZ_TYPE.stop });\n            this.ajax\n                .get(\"/gb28181/control\", {\n                    id: this.context.id,\n                    channel: this.context.channel,\n                    ptzcmd: ptzCmd,\n                })\n                .then((x) => {\n                    if (\n                        options.type === PTZ_TYPE.stop ||\n                        options.cycle === true\n                    ) {\n                        return;\n                    }\n                    setTimeout(() => {\n                        this.ajax.get(\"/gb28181/control\", {\n                            id: this.context.id,\n                            channel: this.context.channel,\n                            ptzcmd: ptzCmdStop,\n                        });\n                    }, 500);\n                });\n        },\n\n        handlePageChange(page){\n            let showList = [];\n            const onePageSize = this.pageInfo.onePageSize;\n            const firstIndex = page * onePageSize - onePageSize;\n            const lastIndex = page * onePageSize - 1 ;\n            showList = this.channelList.filter((item, index) => {\n                return index >= firstIndex && index <= lastIndex;\n            });\n\n            this.channelShowList = showList;\n            if(showList.length > 0){\n                this.pageInfo.currentPage = page;\n            }\n        },\n        updatePageInfo(totalSize){\n            const onePageSize = this.pageInfo.onePageSize;\n            let totalPage = totalSize / onePageSize;\n\n            if (totalSize % onePageSize > 0) {\n                totalPage = totalPage + 1;\n            }\n            this.pageInfo.totalPage = totalPage;\n            if(this.pageInfo.currentPage === 0){\n                this.handlePageChange(1)\n            }\n        },\n        invite(id, channel, item) {\n            this.ajax.get(\"/gb28181/invite\", { id, channel }).then((x) => {\n                item.Connected = true;\n            });\n        },\n        bye(id, channel, item) {\n            this.ajax.get(\"/gb28181/bye\", { id, channel }).then((x) => {\n                item.Connected = false;\n            });\n        },\n    },\n};\n</script>\n<style scoped>\n.flex-box {\n    display: flex;\n    flex-flow: row wrap;\n    align-content: flex-start;\n}\n\n.flex-item {\n    flex: 0 0 33.3333%;\n    height: 275px;\n    box-sizing: border-box;\n    padding: 10px;\n}\n</style>\n","import mod from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./App.vue?vue&type=template&id=31458ad7&scoped=true&\"\nimport script from \"./App.vue?vue&type=script&lang=js&\"\nexport * from \"./App.vue?vue&type=script&lang=js&\"\nimport style0 from \"./App.vue?vue&type=style&index=0&id=31458ad7&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"31458ad7\",\n  null\n  \n)\n\nexport default component.exports","import './setPublicPath'\nimport mod from '~entry'\nexport default mod\nexport * from '~entry'\n"],"sourceRoot":""}
\ No newline at end of file
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\"fb15\");\n","export * from \"-!../../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=style&index=0&id=76558468&scoped=true&lang=css&\"","'use strict'\n\nexports.byteLength = byteLength\nexports.toByteArray = toByteArray\nexports.fromByteArray = fromByteArray\n\nvar lookup = []\nvar revLookup = []\nvar Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array\n\nvar code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'\nfor (var i = 0, len = code.length; i < len; ++i) {\n  lookup[i] = code[i]\n  revLookup[code.charCodeAt(i)] = i\n}\n\n// Support decoding URL-safe base64 strings, as Node.js does.\n// See: https://en.wikipedia.org/wiki/Base64#URL_applications\nrevLookup['-'.charCodeAt(0)] = 62\nrevLookup['_'.charCodeAt(0)] = 63\n\nfunction getLens (b64) {\n  var len = b64.length\n\n  if (len % 4 > 0) {\n    throw new Error('Invalid string. Length must be a multiple of 4')\n  }\n\n  // Trim off extra bytes after placeholder bytes are found\n  // See: https://github.com/beatgammit/base64-js/issues/42\n  var validLen = b64.indexOf('=')\n  if (validLen === -1) validLen = len\n\n  var placeHoldersLen = validLen === len\n    ? 0\n    : 4 - (validLen % 4)\n\n  return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n  var tmp\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n\n  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n  var curByte = 0\n\n  // if there are placeholders, only get up to the last complete 4 chars\n  var len = placeHoldersLen > 0\n    ? validLen - 4\n    : validLen\n\n  var i\n  for (i = 0; i < len; i += 4) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 18) |\n      (revLookup[b64.charCodeAt(i + 1)] << 12) |\n      (revLookup[b64.charCodeAt(i + 2)] << 6) |\n      revLookup[b64.charCodeAt(i + 3)]\n    arr[curByte++] = (tmp >> 16) & 0xFF\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 2) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 2) |\n      (revLookup[b64.charCodeAt(i + 1)] >> 4)\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 1) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 10) |\n      (revLookup[b64.charCodeAt(i + 1)] << 4) |\n      (revLookup[b64.charCodeAt(i + 2)] >> 2)\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  return arr\n}\n\nfunction tripletToBase64 (num) {\n  return lookup[num >> 18 & 0x3F] +\n    lookup[num >> 12 & 0x3F] +\n    lookup[num >> 6 & 0x3F] +\n    lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n  var tmp\n  var output = []\n  for (var i = start; i < end; i += 3) {\n    tmp =\n      ((uint8[i] << 16) & 0xFF0000) +\n      ((uint8[i + 1] << 8) & 0xFF00) +\n      (uint8[i + 2] & 0xFF)\n    output.push(tripletToBase64(tmp))\n  }\n  return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n  var tmp\n  var len = uint8.length\n  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n  var parts = []\n  var maxChunkLength = 16383 // must be multiple of 3\n\n  // go through the array every three bytes, we'll deal with trailing stuff later\n  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n    parts.push(encodeChunk(\n      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)\n    ))\n  }\n\n  // pad the end with zeros, but make sure to not forget the extra bytes\n  if (extraBytes === 1) {\n    tmp = uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 2] +\n      lookup[(tmp << 4) & 0x3F] +\n      '=='\n    )\n  } else if (extraBytes === 2) {\n    tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 10] +\n      lookup[(tmp >> 4) & 0x3F] +\n      lookup[(tmp << 2) & 0x3F] +\n      '='\n    )\n  }\n\n  return parts.join('')\n}\n","// addapted from the document.currentScript polyfill by Adam Miller\n// MIT license\n// source: https://github.com/amiller-gh/currentScript-polyfill\n\n// added support for Firefox https://bugzilla.mozilla.org/show_bug.cgi?id=1620505\n\n(function (root, factory) {\n  if (typeof define === 'function' && define.amd) {\n    define([], factory);\n  } else if (typeof module === 'object' && module.exports) {\n    module.exports = factory();\n  } else {\n    root.getCurrentScript = factory();\n  }\n}(typeof self !== 'undefined' ? self : this, function () {\n  function getCurrentScript () {\n    var descriptor = Object.getOwnPropertyDescriptor(document, 'currentScript')\n    // for chrome\n    if (!descriptor && 'currentScript' in document && document.currentScript) {\n      return document.currentScript\n    }\n\n    // for other browsers with native support for currentScript\n    if (descriptor && descriptor.get !== getCurrentScript && document.currentScript) {\n      return document.currentScript\n    }\n  \n    // IE 8-10 support script readyState\n    // IE 11+ & Firefox support stack trace\n    try {\n      throw new Error();\n    }\n    catch (err) {\n      // Find the second match for the \"at\" string to get file src url from stack.\n      var ieStackRegExp = /.*at [^(]*\\((.*):(.+):(.+)\\)$/ig,\n        ffStackRegExp = /@([^@]*):(\\d+):(\\d+)\\s*$/ig,\n        stackDetails = ieStackRegExp.exec(err.stack) || ffStackRegExp.exec(err.stack),\n        scriptLocation = (stackDetails && stackDetails[1]) || false,\n        line = (stackDetails && stackDetails[2]) || false,\n        currentLocation = document.location.href.replace(document.location.hash, ''),\n        pageSource,\n        inlineScriptSourceRegExp,\n        inlineScriptSource,\n        scripts = document.getElementsByTagName('script'); // Live NodeList collection\n  \n      if (scriptLocation === currentLocation) {\n        pageSource = document.documentElement.outerHTML;\n        inlineScriptSourceRegExp = new RegExp('(?:[^\\\\n]+?\\\\n){0,' + (line - 2) + '}[^<]*<script>([\\\\d\\\\D]*?)<\\\\/script>[\\\\d\\\\D]*', 'i');\n        inlineScriptSource = pageSource.replace(inlineScriptSourceRegExp, '$1').trim();\n      }\n  \n      for (var i = 0; i < scripts.length; i++) {\n        // If ready state is interactive, return the script tag\n        if (scripts[i].readyState === 'interactive') {\n          return scripts[i];\n        }\n  \n        // If src matches, return the script tag\n        if (scripts[i].src === scriptLocation) {\n          return scripts[i];\n        }\n  \n        // If inline source matches, return the script tag\n        if (\n          scriptLocation === currentLocation &&\n          scripts[i].innerHTML &&\n          scripts[i].innerHTML.trim() === inlineScriptSource\n        ) {\n          return scripts[i];\n        }\n      }\n  \n      // If no match, return null\n      return null;\n    }\n  };\n\n  return getCurrentScript\n}));\n","/**\n * Date:2020/11/9\n * Desc:\n */\n/**\n * Date:2020/11/2\n * Desc: ptz cmd 封装\n * cmd[0] //首字节以05H开头\n * cmd[1] //组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n *        //  校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n * cmd[2] //地址的低8位？？？什么地址，地址范围000h ~ FFFh(0~4095),其中000h为广播地址\n * cmd[3] //指令码\n * cmd[4] //数据1,水平控制速度、聚焦速度\n * cmd[5] //数据2，垂直控制速度、光圈速度\n * cmd[6] // 高4位为数据3=变倍控制速度，低4位为地址高4位\n */\n\nconst PTZ_TYPE = {\n    stop: 'stop',\n    right: 'right',\n    left: 'left',\n    up: 'up',\n    down: 'down',\n    leftUp: 'leftUp',\n    leftDown: 'leftDown',\n    rightUp: 'rightUp',\n    rightDown: 'rightDown',\n    zoomFar: 'zoomFar',\n    zoomNear: 'zoomNear',\n    apertureFar: 'apertureFar',\n    apertureNear: 'apertureNear',\n    focusFar: 'focusFar',\n    focusNear: 'focusNear',\n    setPos: 'setPos',\n    calPos: 'calPos',\n    delPos: 'delPos'\n};\n\nconst PTZ_CMD_TYPE = {\n    stop: 0x00,\n\n    right: 0x01,\n    left: 0x02,\n    up: 0x08,\n    down: 0x04,\n\n    leftUp: 0x0A,\n    leftDown: 0x06,\n    rightUp: 0x09,\n    rightDown: 0x05,\n\n    zoomFar: 0x10, // 镜头 放大\n    zoomNear: 0x20,  // 镜头 缩小\n\n    apertureFar: 0x48, // 光圈 缩小\n    apertureNear: 0x44, // 光圈 放大\n\n    focusFar: 0x42, // 聚焦 近\n    focusNear: 0x41, // 聚焦 远\n\n    setPos: 0x81,\n    calPos: 0x82,\n    delPos: 0x83\n};\n\nconst SPEED_ARRAY = [0x19, 0x32, 0x4b, 0x64, 0x7d, 0x96, 0xAF, 0xC8, 0xE1, 0xFA];\nconst POSITION_ARRAY = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10];\n\n// 获取 direction 方向型\n/**\n *\n * @param options\n *        type:\n *        speed:default 5\n *        index:\n * @returns {string}\n */\nfunction getPTZCmd(options) {\n    const {type, speed, index} = options;\n    const ptzSpeed = getPTZSpeed(speed);\n    let indexValue3, indexValue4, indexValue5, indexValue6;\n    indexValue3 = PTZ_CMD_TYPE[type];\n    switch (type) {\n        case PTZ_TYPE.up:\n        case PTZ_TYPE.down:\n        case PTZ_TYPE.apertureFar:\n        case PTZ_TYPE.apertureNear:\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.right:\n        case PTZ_TYPE.left:\n        case PTZ_TYPE.focusFar:\n        case PTZ_TYPE.focusNear:\n            indexValue4 = ptzSpeed;\n            break;\n        case PTZ_TYPE.leftUp:\n        case PTZ_TYPE.leftDown:\n        case PTZ_TYPE.rightUp:\n        case PTZ_TYPE.rightDown:\n            indexValue4 = ptzSpeed;\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.zoomFar:\n        case PTZ_TYPE.zoomNear:\n            indexValue6 = 0x10;\n            break;\n        case PTZ_TYPE.calPos:\n        case PTZ_TYPE.delPos:\n        case PTZ_TYPE.setPos:\n            indexValue5 = getPTZPositionIndex(index);\n            break;\n        default:\n            break;\n    }\n    return ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6);\n}\n\nfunction getPTZSpeed(speed) {\n    speed = speed || 5;\n    const speedIndex = speed - 1;\n    const ptzSpeed = SPEED_ARRAY[speedIndex] || SPEED_ARRAY[4];\n    return ptzSpeed;\n}\n\nfunction getPTZPositionIndex(index) {\n    return POSITION_ARRAY[index - 1];\n}\n\nfunction ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6) {\n    //\n    let cmd = Buffer.alloc(8);\n    // 首字节以05H开头\n    cmd[0] = 0xA5;\n    // 组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n    cmd[1] = 0x0F;\n    // 校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n    cmd[2] = 0x01;\n    //\n    if (indexValue3) {\n        cmd[3] = indexValue3;\n    }\n    if (indexValue4) {\n        cmd[4] = indexValue4;\n    }\n    if (indexValue5) {\n        cmd[5] = indexValue5;\n    }\n    if (indexValue6) {\n        cmd[6] = indexValue6;\n    }\n\n    cmd[7] = (cmd[0] + cmd[1] + cmd[2] + cmd[3] + cmd[4] + cmd[5] + cmd[6]) % 256;\n\n    return bytes2HexString(cmd);\n}\n\nfunction bytes2HexString(byte) {\n    let hexs = \"\";\n    for (let i = 0; i < byte.length; i++) {\n        let hex = (byte[i]).toString(16);\n        if (hex.length === 1) {\n            hex = '0' + hex;\n        }\n        hexs += hex.toUpperCase();\n    }\n    return hexs;\n}\n\nexport {\n    getPTZCmd,\n    PTZ_TYPE\n}\n","export * from \"-!../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=style&index=0&id=59b6c9a0&scoped=true&lang=css&\"","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","export * from \"-!../../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Records.vue?vue&type=style&index=0&id=72d12ba2&scoped=true&lang=css&\"","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <http://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n *     incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n  ? global.TYPED_ARRAY_SUPPORT\n  : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n  try {\n    var arr = new Uint8Array(1)\n    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n    return arr.foo() === 42 && // typed array instances can be augmented\n        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n  } catch (e) {\n    return false\n  }\n}\n\nfunction kMaxLength () {\n  return Buffer.TYPED_ARRAY_SUPPORT\n    ? 0x7fffffff\n    : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n  if (kMaxLength() < length) {\n    throw new RangeError('Invalid typed array length')\n  }\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = new Uint8Array(length)\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    if (that === null) {\n      that = new Buffer(length)\n    }\n    that.length = length\n  }\n\n  return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n    return new Buffer(arg, encodingOrOffset, length)\n  }\n\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new Error(\n        'If encoding is specified then the first argument must be a string'\n      )\n    }\n    return allocUnsafe(this, arg)\n  }\n  return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n  arr.__proto__ = Buffer.prototype\n  return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n  if (typeof value === 'number') {\n    throw new TypeError('\"value\" argument must not be a number')\n  }\n\n  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n    return fromArrayBuffer(that, value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'string') {\n    return fromString(that, value, encodingOrOffset)\n  }\n\n  return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n  Buffer.prototype.__proto__ = Uint8Array.prototype\n  Buffer.__proto__ = Uint8Array\n  if (typeof Symbol !== 'undefined' && Symbol.species &&\n      Buffer[Symbol.species] === Buffer) {\n    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n    Object.defineProperty(Buffer, Symbol.species, {\n      value: null,\n      configurable: true\n    })\n  }\n}\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be a number')\n  } else if (size < 0) {\n    throw new RangeError('\"size\" argument must not be negative')\n  }\n}\n\nfunction alloc (that, size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(that, size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpretted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(that, size).fill(fill, encoding)\n      : createBuffer(that, size).fill(fill)\n  }\n  return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n  assertSize(size)\n  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) {\n    for (var i = 0; i < size; ++i) {\n      that[i] = 0\n    }\n  }\n  return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('\"encoding\" must be a valid string encoding')\n  }\n\n  var length = byteLength(string, encoding) | 0\n  that = createBuffer(that, length)\n\n  var actual = that.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    that = that.slice(0, actual)\n  }\n\n  return that\n}\n\nfunction fromArrayLike (that, array) {\n  var length = array.length < 0 ? 0 : checked(array.length) | 0\n  that = createBuffer(that, length)\n  for (var i = 0; i < length; i += 1) {\n    that[i] = array[i] & 255\n  }\n  return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n  array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\\'offset\\' is out of bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\\'length\\' is out of bounds')\n  }\n\n  if (byteOffset === undefined && length === undefined) {\n    array = new Uint8Array(array)\n  } else if (length === undefined) {\n    array = new Uint8Array(array, byteOffset)\n  } else {\n    array = new Uint8Array(array, byteOffset, length)\n  }\n\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = array\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    that = fromArrayLike(that, array)\n  }\n  return that\n}\n\nfunction fromObject (that, obj) {\n  if (Buffer.isBuffer(obj)) {\n    var len = checked(obj.length) | 0\n    that = createBuffer(that, len)\n\n    if (that.length === 0) {\n      return that\n    }\n\n    obj.copy(that, 0, 0, len)\n    return that\n  }\n\n  if (obj) {\n    if ((typeof ArrayBuffer !== 'undefined' &&\n        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n      if (typeof obj.length !== 'number' || isnan(obj.length)) {\n        return createBuffer(that, 0)\n      }\n      return fromArrayLike(that, obj)\n    }\n\n    if (obj.type === 'Buffer' && isArray(obj.data)) {\n      return fromArrayLike(that, obj.data)\n    }\n  }\n\n  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < kMaxLength()` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= kMaxLength()) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + kMaxLength().toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError('Arguments must be Buffers')\n  }\n\n  if (a === b) return 0\n\n  var x = a.length\n  var y = b.length\n\n  for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  var i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  var buffer = Buffer.allocUnsafe(length)\n  var pos = 0\n  for (i = 0; i < list.length; ++i) {\n    var buf = list[i]\n    if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    }\n    buf.copy(buffer, pos)\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    string = '' + string\n  }\n\n  var len = string.length\n  if (len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n      case undefined:\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) return utf8ToBytes(string).length // assume utf8\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  var loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  var i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  var len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (var i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  var len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (var i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  var len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (var i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  var length = this.length | 0\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  var str = ''\n  var max = exports.INSPECT_MAX_BYTES\n  if (this.length > 0) {\n    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n    if (this.length > max) str += ' ... '\n  }\n  return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError('Argument must be a Buffer')\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  var x = thisEnd - thisStart\n  var y = end - start\n  var len = Math.min(x, y)\n\n  var thisCopy = this.slice(thisStart, thisEnd)\n  var targetCopy = target.slice(start, end)\n\n  for (var i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset  // Coerce to Number.\n  if (isNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (Buffer.TYPED_ARRAY_SUPPORT &&\n        typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  var indexSize = 1\n  var arrLength = arr.length\n  var valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  var i\n  if (dir) {\n    var foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      var found = true\n      for (var j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  var remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  // must be an even number of digits\n  var strLen = string.length\n  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  for (var i = 0; i < length; ++i) {\n    var parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (isNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n  return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset | 0\n    if (isFinite(length)) {\n      length = length | 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  // legacy write(string, encoding, offset, length) - remove in v0.13\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  var remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n        return asciiWrite(this, string, offset, length)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Write(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  var res = []\n\n  var i = start\n  while (i < end) {\n    var firstByte = buf[i]\n    var codePoint = null\n    var bytesPerSequence = (firstByte > 0xEF) ? 4\n      : (firstByte > 0xDF) ? 3\n      : (firstByte > 0xBF) ? 2\n      : 1\n\n    if (i + bytesPerSequence <= end) {\n      var secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  var len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  var res = ''\n  var i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  var len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  var out = ''\n  for (var i = start; i < end; ++i) {\n    out += toHex(buf[i])\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  var bytes = buf.slice(start, end)\n  var res = ''\n  for (var i = 0; i < bytes.length; i += 2) {\n    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  var len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  var newBuf\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    newBuf = this.subarray(start, end)\n    newBuf.__proto__ = Buffer.prototype\n  } else {\n    var sliceLen = end - start\n    newBuf = new Buffer(sliceLen, undefined)\n    for (var i = 0; i < sliceLen; ++i) {\n      newBuf[i] = this[i + start]\n    }\n  }\n\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  var val = this[offset + --byteLength]\n  var mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var i = byteLength\n  var mul = 1\n  var val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var mul = 1\n  var i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n      (littleEndian ? i : 1 - i) * 8\n  }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffffffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n  }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset + 3] = (value >>> 24)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 1] = (value >>> 8)\n    this[offset] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = 0\n  var mul = 1\n  var sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  var sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 3] = (value >>> 24)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  var len = end - start\n  var i\n\n  if (this === target && start < targetStart && targetStart < end) {\n    // descending copy from end\n    for (i = len - 1; i >= 0; --i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n    // ascending copy from start\n    for (i = 0; i < len; ++i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, start + len),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (val.length === 1) {\n      var code = val.charCodeAt(0)\n      if (code < 256) {\n        val = code\n      }\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  var i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    var bytes = Buffer.isBuffer(val)\n      ? val\n      : utf8ToBytes(new Buffer(val, encoding).toString())\n    var len = bytes.length\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction stringtrim (str) {\n  if (str.trim) return str.trim()\n  return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n  if (n < 16) return '0' + n.toString(16)\n  return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  var codePoint\n  var length = string.length\n  var leadSurrogate = null\n  var bytes = []\n\n  for (var i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        } else if (i + 1 === length) {\n          // unpaired lead\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        }\n\n        // valid lead\n        leadSurrogate = codePoint\n\n        continue\n      }\n\n      // 2 leads in a row\n      if (codePoint < 0xDC00) {\n        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n        leadSurrogate = codePoint\n        continue\n      }\n\n      // valid surrogate pair\n      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n    } else if (leadSurrogate) {\n      // valid bmp char, but last char was a lead\n      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n    }\n\n    leadSurrogate = null\n\n    // encode utf8\n    if (codePoint < 0x80) {\n      if ((units -= 1) < 0) break\n      bytes.push(codePoint)\n    } else if (codePoint < 0x800) {\n      if ((units -= 2) < 0) break\n      bytes.push(\n        codePoint >> 0x6 | 0xC0,\n        codePoint 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341.333333 0 0 1 512 170.666667m0-42.666667a384 384 0 1 0 384 384A384 384 0 0 0 512 128z\"  /><path fill=\"#333333\" d=\"M298.666667 533.333333H170.666667a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM853.333333 533.333333h-128a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM512 320a21.333333 21.333333 0 0 1-21.333333-21.333333V170.666667a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333333zM512 874.666667a21.333333 21.333333 0 0 1-21.333333-21.333334v-128a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333334z\"  /></svg>\n      </div>\n      <div class=\"control5\">\n        <i-select v-model=\"ptzPositionIndex\" style=\"width: 100px\">\n          <Option v-for=\"n in 10\" :value=\"n\" :key=\"n\">预置点{{n}}</Option>\n        </i-select>\n        <i-button type=\"primary\" @click=\"ptzCmd(ptzType.setPos)\">设置</i-button>\n        <i-button type=\"success\" @click=\"ptzCmd(ptzType.calPos)\">调用</i-button>\n        <i-button type=\"error\" @click=\"ptzCmd(ptzType.delPos)\">删除</i-button>\n        速度：\n        <InputNumber :max=\"10\" :min=\"1\" v-model=\"ptzSpeed\"></InputNumber>\n      </div>\n    </div>\n    <div slot=\"footer\">\n      <mu-badge v-if=\"remoteSDP\">\n        <a slot=\"content\" :href=\"remoteSDPURL\" download=\"remoteSDP.txt\">remoteSDP</a>\n      </mu-badge>\n      <mu-badge v-if=\"localSDP\">\n        <a slot=\"content\" :href=\"localSDPURL\" download=\"localSDP.txt\">localSDP</a>\n      </mu-badge>\n    </div>\n  </Modal>\n</template>\n<script>\n  import {PTZ_TYPE} from \"../utils/ptz-cmd\";\n  const PTZ_DIRECTION_ARRAY = [PTZ_TYPE.up,PTZ_TYPE.right,PTZ_TYPE.down,PTZ_TYPE.left,PTZ_TYPE.leftUp,PTZ_TYPE.rightUp,PTZ_TYPE.leftDown,PTZ_TYPE.rightDown];\n  let pc = null;\nexport default {\n  data() {\n    return {\n      iceConnectionState: pc && pc.iceConnectionState,\n      stream: null,\n      localSDP: \"\",\n      remoteSDP: \"\",\n      remoteSDPURL: \"\",\n      localSDPURL: \"\",\n      streamPath: \"\",\n      ptzSpeed:5,\n      ptzPositionIndex:1,\n      ptzType:PTZ_TYPE,\n    };\n  },\n  props:{\n    PublicIP:String\n  },\n    methods: {\n        async play(streamPath) {\n            pc = new RTCPeerConnection();\n            pc.addTransceiver('video',{\n              direction:'recvonly'\n            })\n            this.streamPath = streamPath;\n            pc.onsignalingstatechange = e => {\n                //console.log(e);\n            };\n            pc.oniceconnectionstatechange = e => {\n                this.$toast.info(pc.iceConnectionState);\n                this.iceConnectionState = pc.iceConnectionState;\n            };\n            pc.onicecandidate = event => {\n                console.log(event)\n            };\n            pc.ontrack = event => {\n               // console.log(event);\n                if (event.track.kind == \"video\")\n                    this.stream = event.streams[0];\n            };\n            await pc.setLocalDescription(await pc.createOffer());\n            this.localSDP = pc.localDescription.sdp;\n            this.localSDPURL = URL.createObjectURL(\n                new Blob([this.localSDP], { type: \"text/plain\" })\n            );\n            const result = await this.ajax({\n                type: \"POST\",\n                processData: false,\n                data: JSON.stringify(pc.localDescription.toJSON()),\n                url: \"/webrtc/play?streamPath=\" + this.streamPath,\n                dataType: \"json\"\n            });\n            if (result.errmsg) {\n                this.$toast.error(result.errmsg);\n                return;\n            } else {\n                this.remoteSDP = result.sdp;\n                this.remoteSDPURL = URL.createObjectURL(new Blob([this.remoteSDP], { type: \"text/plain\" }));\n            }\n            await pc.setRemoteDescription(new RTCSessionDescription(result));\n        },\n        ptzCmdDirection(direction){\n          const type = PTZ_DIRECTION_ARRAY[direction-1];\n          this.ptzCmd(type);\n        },\n        startPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.right,true);\n        },\n        stopPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.stop);\n        },\n        ptzCmd(type,isCycling){\n          this.$emit('ptz',{type:type,speed:this.ptzSpeed,index:this.ptzPositionIndex,cycle:isCycling})\n        },\n        onClosePreview() {\n            pc.close();\n        }\n    }\n};\n</script>\n<style scoped>\n  .arrow1{\n    grid-column: 2;\n    grid-row: 1;\n  }\n  .arrow2{\n    transform: rotate(90deg);\n    grid-column: 3;\n    grid-row: 2;\n  }\n  .arrow3{\n    transform: rotate(180deg);\n    grid-column: 2;\n    grid-row: 3;\n  }\n  .arrow4{\n    transform: rotate(270deg);\n    grid-column: 1;\n    grid-row: 2;\n  }\n\n  .arrow5{\n    transform: rotate(-45deg);\n    grid-column: 1;\n    grid-row: 1;\n  }\n\n  .arrow6{\n    transform: rotate(45deg);\n    grid-column: 3;\n    grid-row: 1;\n  }\n\n  .arrow7{\n    transform: rotate(-135deg);\n    grid-column: 1;\n    grid-row: 3;\n  }\n\n  .arrow8{\n    transform: rotate(135deg);\n    grid-column: 3;\n    grid-row: 3;\n  }\n\n  .arrow9{\n    grid-column: 2;\n    grid-row: 2;\n  }\n\n.container {\n  position: relative;\n  height: 350px;\n}\n.control {\n  position: absolute;\n  top: 20px;\n  right: 0;\n  display: grid;\n  grid-template-columns: repeat(3, 33.33%);\n  grid-template-rows: repeat(3, 33.33%);\n  width: 192px;\n  height: 192px;\n}\n\n.control2{\n  top: 210px;\n}\n\n.control3{\n  top: 260px;\n}\n\n.control4{\n  top: 310px;\n}\n\n.control5{\n  top: 360px;\n}\n\n.control >* {\n  cursor: pointer;\n  fill: gray;\n  width: 50px;\n  height: 50px;\n}\n\n.control5 >*{\n  margin-right: 10px;\n}\n\n.control2 >*,.control3 >*,.control4 >*{\n  width: 40px;\n  height: 40px;\n}\n\n.control >*:hover,.cycling{\n  fill: cyan\n}\n\n\n\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"","/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nexport default function normalizeComponent (\n  scriptExports,\n  render,\n  staticRenderFns,\n  functionalTemplate,\n  injectStyles,\n  scopeId,\n  moduleIdentifier, /* server only */\n  shadowMode /* vue-cli only */\n) {\n  // Vue.extend constructor export interop\n  var options = typeof scriptExports === 'function'\n    ? scriptExports.options\n    : scriptExports\n\n  // render functions\n  if (render) {\n    options.render = render\n    options.staticRenderFns = staticRenderFns\n    options._compiled = true\n  }\n\n  // functional template\n  if (functionalTemplate) {\n    options.functional = true\n  }\n\n  // scopedId\n  if (scopeId) {\n    options._scopeId = 'data-v-' + scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = shadowMode\n      ? function () {\n        injectStyles.call(\n          this,\n          (options.functional ? this.parent : this).$root.$options.shadowRoot\n        )\n      }\n      : injectStyles\n  }\n\n  if (hook) {\n    if (options.functional) {\n      // for template-only hot-reload because in that case the render fn doesn't\n      // go through the normalizer\n      options._injectStyles = hook\n      // register for functional component in vue file\n      var originalRender = options.render\n      options.render = function renderWithStyleInjection (h, context) {\n        hook.call(context)\n        return originalRender(h, context)\n      }\n    } else {\n      // inject component registration as beforeCreate hook\n      var existing = options.beforeCreate\n      options.beforeCreate = existing\n        ? [].concat(existing, hook)\n        : [hook]\n    }\n  }\n\n  return {\n    exports: scriptExports,\n    options: options\n  }\n}\n","import { render, staticRenderFns } from \"./Player.vue?vue&type=template&id=76558468&scoped=true&\"\nimport script from \"./Player.vue?vue&type=script&lang=js&\"\nexport * from \"./Player.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player.vue?vue&type=style&index=0&id=76558468&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"76558468\",\n  null\n  \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:\"player-wrap\"},[(_vm.rtcStream)?[_c('video',{attrs:{\"autoplay\":\"\",\"muted\":\"\",\"controls\":\"\"},domProps:{\"srcObject\":_vm.rtcStream,\"muted\":true}})]:_vm._e()],2)}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","<template>\n    <div class=\"player-wrap\">\n        <template v-if=\"rtcStream\">\n            <video :srcObject.prop=\"rtcStream\" autoplay muted controls></video>\n        </template>\n    </div>\n</template>\n\n<script>\n    export default {\n        name: \"WebrtcPlayer\",\n        rtcPeerConnection: null,\n        data() {\n            return {\n                iceConnectionState: '',\n                rtcPeerConnectionInit: false,\n                rtcStream: null\n            }\n        },\n        props: {\n            streamPath: {\n                type: String,\n                default: ''\n            }\n        },\n        async created() {\n            await this.initRtcPeerConnection();\n            console.log('initRtcPeerConnectioned');\n            if (this.streamPath) {\n                await this.play(this.streamPath);\n                console.log('played');\n            }\n        },\n        methods: {\n            async initRtcPeerConnection() {\n                const rtcPeerConnection = new RTCPeerConnection();\n\n                rtcPeerConnection.addTransceiver('video', {\n                    direction: \"recvonly\"\n                });\n\n                rtcPeerConnection.onsignalingstatechange = e => {\n                    console.log('onsignalingstatechange', e);\n                };\n\n                rtcPeerConnection.oniceconnectionstatechange = e => {\n                    console.log('oniceconnectionstatechange', rtcPeerConnection.iceConnectionState);\n                };\n\n                rtcPeerConnection.onicecandidate = event => {\n                    console.log('onicecandidate', event);\n                };\n\n                rtcPeerConnection.ontrack = event => {\n                    console.log('ontrack', event);\n                    if (event.track.kind === \"video\") {\n                        this.rtcStream = event.streams[0];\n                    }\n                };\n\n                const rtcSessionDescriptionInit = await rtcPeerConnection.createOffer();\n                await rtcPeerConnection.setLocalDescription(rtcSessionDescriptionInit);\n                this.rtcPeerConnectionInit = true;\n                this.$options.rtcPeerConnection = rtcPeerConnection;\n            },\n\n            //\n            async play(streamPath) {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                const localDescriptionData = rtcPeerConnection.localDescription.toJSON();\n                const result = await this.ajax({\n                    type: \"POST\",\n                    processData: false,\n                    data: JSON.stringify(localDescriptionData),\n                    url: \"/webrtc/play?streamPath=\" + streamPath,\n                    dataType: \"json\"\n                });\n                if (result.errmsg) {\n                    console.error(result.errmsg);\n                    return;\n                }\n                //\n                rtcPeerConnection.setRemoteDescription(new RTCSessionDescription({\n                    type: result.type,\n                    sdp: result.sdp\n                }));\n            },\n            close() {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                rtcPeerConnection && rtcPeerConnection.close();\n            }\n        },\n        destroyed() {\n            this.close();\n        }\n    }\n</script>\n\n<style scoped>\n    .player-wrap {\n        width: 100%;\n        height: 100%;\n        border-radius: 4px;\n        box-shadow: 0 0 5px #40d3fc, inset 0 0 5px #40d3fc, 0 0 0 1px #40d3fc;\n    }\n\n    .player-wrap video {\n        width: 100%;\n        height: 100%;\n    }\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Player2.vue?vue&type=template&id=3d23233a&scoped=true&\"\nimport script from \"./Player2.vue?vue&type=script&lang=js&\"\nexport * from \"./Player2.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player2.vue?vue&type=style&index=0&id=3d23233a&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"3d23233a\",\n  null\n  \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('Modal',_vm._g(_vm._b({attrs:{\"draggable\":\"\",\"width\":\"900\",\"title\":\"Records\"},on:{\"on-ok\":_vm.onClosePreview,\"on-cancel\":_vm.onClosePreview}},'Modal',_vm.$attrs,false),_vm.$listeners),[_c('div',{staticClass:\"container\"},[_c('div',{staticClass:\"search\"},[_c('DatePicker',{staticStyle:{\"width\":\"200px\"},attrs:{\"type\":\"date\",\"options\":_vm.timeOptions,\"value\":_vm.search.time,\"placeholder\":\"请选择时间\",\"clearable\":false},on:{\"change\":_vm.handleTimeChange}})],1),_c('div',[_c('mu-data-table',{attrs:{\"columns\":_vm.columns,\"data\":_vm.recordList},scopedSlots:_vm._u([{key:\"expand\",fn:function(prop){return [_c('div',[_c('m-button',{on:{\"click\":function($event){return _vm.play(prop.row)}}},[_vm._v(\"播放\")])],1)]}},{key:\"default\",fn:function(scope){return [_c('td',[_vm._v(_vm._s(scope.row.DeviceID))]),_c('td',[_vm._v(_vm._s(scope.row.Name))]),_c('td',[_vm._v(_vm._s(scope.row.time))]),_c('td',[_vm._v(_vm._s(scope.row.length))]),_c('td',[_vm._v(_vm._s(scope.row.FilePath))]),_c('td',[_vm._v(_vm._s(scope.row.Address))]),_c('td',[_vm._v(_vm._s(scope.row.Type))])]}}])})],1)])])}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","/**\n * Date:2020/12/24\n * Desc:\n */\n\nexport function getOneTimeRange(time, options) {\n    let date;\n\n    // 都为空的时候\n    if (!time && !options) {\n        date = new Date();\n    } else if (Object.prototype.toString.call(time) !== '[object Date]' && time !== null && typeof time === 'object') {\n        // time 为 options 参数。\n        options = time;\n        date = new Date();\n    } else if (Object.prototype.toString.call(time) === '[object Date]') {\n        // time 是时间格式\n        date = time;\n    } else {\n        // time 是 int 格式。\n        if (('' + time).length === 10) time = parseInt(time) * 1000;\n        time = +time; // 转成int 型\n        date = new Date(time);\n    }\n\n    options = options || {};\n\n    let result = {\n        start: 0,\n        end: 0\n    };\n\n    let _startTime = new Date(date).setHours(options.startHour || 0, options.startMin || 0, 0, 0);\n    let _endTime = new Date(date).setHours(options.endHour || 23, options.endMin || 59, 59, 0);\n    result.start = new Date(_startTime).getTime();\n    result.end = new Date(_endTime).getTime();\n\n    return result;\n};\n\n\nexport function formatTimestamp(t) {\n    var d = 0,\n        h = 0,\n        m = 0,\n        s = 0;\n    if (t > 0) {\n        d = Math.floor(t / 1000 / 3600 / 24)\n        h = Math.floor(t / 1000 / 60 / 60 % 24)\n        m = Math.floor(t / 1000 / 60 % 60)\n        s = Math.floor(t / 1000 % 60)\n    }\n\n    return `${d}天${h}时${m}分${s}秒`\n}\n\nexport function formatTimeTips(timestamp) {\n    let result;\n\n    //\n    if (time > -1) {\n        let hour = Math.floor(timestamp / 3600);\n        let min = Math.floor(timestamp / 60) % 60;\n        let sec = timestamp % 60;\n\n        sec = Math.round(sec);\n\n        if (hour < 10) {\n            result = '0' + hour + \":\";\n        } else {\n            result = hour + \":\";\n        }\n\n        if (min < 10) {\n            result += \"0\";\n        }\n        result += min + \":\";\n        if (sec < 10) {\n            result += \"0\";\n        }\n        result += sec.toFixed(0);\n    }\n\n    return result;\n}\n\n\nexport function parseTime(time, cFormat) {\n    if (arguments.length === 0) {\n        return null\n    }\n    var format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'\n    var date;\n    if (typeof time === 'object') {\n        date = time\n    } else {\n        if (('' + time).length === 10) time = parseInt(time) * 1000;\n        time = +time; // 转成int 型\n        date = new Date(time)\n    }\n    var formatObj = {\n        y: date.getFullYear(),\n        m: date.getMonth() + 1,\n        d: date.getDate(),\n        h: date.getHours(),\n        i: date.getMinutes(),\n        s: date.getSeconds(),\n        a: date.getDay()\n    };\n    var time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {\n        var value = formatObj[key]\n        if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]\n        if (result.length > 0 && value < 10) {\n            value = '0' + value\n        }\n        return value || 0\n    });\n    return time_str\n}\n","<template>\n    <Modal v-bind=\"$attrs\"\n           draggable\n           width=\"900\"\n           v-on=\"$listeners\"\n           title=\"Records\"\n           @on-ok=\"onClosePreview\"\n           @on-cancel=\"onClosePreview\">\n        <div class=\"container\">\n            <div class=\"search\">\n                <DatePicker type=\"date\" :options=\"timeOptions\" :value=\"search.time\" placeholder=\"请选择时间\"\n                            style=\"width: 200px\" :clearable=\"false\"\n                            @change=\"handleTimeChange\"></DatePicker>\n            </div>\n            <div>\n                <mu-data-table :columns=\"columns\" :data=\"recordList\">\n                    <template #expand=\"prop\">\n                        <div>\n                            <m-button @click=\"play(prop.row)\">播放</m-button>\n                        </div>\n                    </template>\n                    <template #default=\"scope\">\n                        <td>{{scope.row.DeviceID}}</td>\n                        <td>{{scope.row.Name}}</td>\n                        <td>{{scope.row.time}}</td>\n                        <td>{{scope.row.length}}</td>\n                        <td>{{scope.row.FilePath}}</td>\n                        <td>{{scope.row.Address}}</td>\n                        <td>{{scope.row.Type}}</td>\n                    </template>\n                </mu-data-table>\n            </div>\n        </div>\n    </Modal>\n</template>\n\n<script>\n    import {getOneTimeRange, formatTimeTips, parseTime} from \"../utils\";\n\n    const _now = new Date();\n\n    export default {\n        name: \"Records\",\n        props: {\n            records: Array\n        },\n        data() {\n            return {\n                timeOptions: {\n                    disabledDate(date) {\n                        return date && date.valueOf() > Date.now();\n                    }\n                },\n                search: {\n                    id: null,\n                    channel: 0,\n                    deviceId: null,\n                    time: _now\n                },\n                columns: Object.freeze(\n                    [\n                        '设备ID',\n                        '名称',\n                        '时间',\n                        '时长',\n                        '文件路径',\n                        '地址',\n                        '类型'\n                    ].map((title) => ({\n                        title,\n                    }))\n                )\n            }\n        },\n        computed: {\n            startTime() {\n                if (!this.search.time) {\n                    return ''\n                }\n                const start = getOneTimeRange(this.search.time).start;\n                return new Date(start).toISOString();\n            },\n            endTime() {\n\n                if (!this.search.time) {\n                    return ''\n                }\n\n                const end = getOneTimeRange(this.search.time).end;\n                return new Date(end).toISOString();\n            },\n            recordList() {\n                const list = this.records.map((record) => {\n                    const startTime = new Date(record.StartTime).getTime();\n                    const endTime = new Date(record.EndTime).getTime();\n                    const timestamp = endTime - startTime;\n                    const timeLength = formatTimeTips(timestamp);\n\n                    const _startTime = parseTime(startTime);\n\n                    record.length = timeLength;\n                    record.time = _startTime;\n                    return record;\n                });\n                return list;\n            }\n        },\n\n        methods: {\n            getList(options) {\n                this.search.id = options.id;\n                this.search.channel = options.channel;\n                this.search.deviceId = options.deviceId;\n                this._fetchList();\n            },\n\n            _fetchList() {\n                if (this.search.id && this.search.channel && this.startTime && this.endTime) {\n                    const query = {\n                        id: this.search.id,\n                        channel: this.search.channel,\n                        startTime: this.search.startTime,\n                        endTime: this.search.endTime\n                    };\n\n                    this.ajax.get(\"/gb28181/query/records\", query).then((x) => {\n\n                    });\n                }\n            },\n            onClosePreview() {\n                this.$emit('close');\n            },\n            handleTimeChange(date) {\n                this.search.time = date;\n                this._fetchList();\n            },\n            play() {\n\n            }\n        }\n    }\n</script>\n\n<style scoped>\n\n    .container {\n        position: relative;\n        height: 500px;\n        background-image: radial-gradient(#c52dd07a, #4a17987a, #0300137a);\n        color: #ffffff;\n        background-color: black;\n        overflow: auto;\n    }\n\n    .search {\n        padding: 10px 0;\n    }\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Records.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Records.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Records.vue?vue&type=template&id=72d12ba2&scoped=true&\"\nimport script from \"./Records.vue?vue&type=script&lang=js&\"\nexport * from \"./Records.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Records.vue?vue&type=style&index=0&id=72d12ba2&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"72d12ba2\",\n  null\n  \n)\n\nexport default component.exports","<template>\n    <div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 0\">\n            <mu-data-table :data=\"Devices\" :columns=\"columns\">\n                <template #expand=\"prop\">\n                    <mu-data-table\n                            :data=\"prop.row.Channels\"\n                            :columns=\"columns2\"\n                    >\n                        <template #default=\"{ row: item, $index }\">\n                            <td>{{ item.DeviceID }}</td>\n                            <td>{{ item.Name }}</td>\n                            <td>{{ item.Manufacturer }}</td>\n                            <td>{{ item.Address }}</td>\n                            <td>{{ item.Status }}</td>\n                            <td>\n                                <mu-button\n                                        flat\n                                        v-if=\"item.Connected\"\n                                        @click=\"ptz(prop.row.ID, $index, item)\"\n                                >云台\n                                </mu-button>\n                                <mu-button\n                                        flat\n                                        v-if=\"item.Connected\"\n                                        @click=\"bye(prop.row.ID, $index)\"\n                                >断开\n                                </mu-button\n                                >\n                                <mu-button\n                                        v-else\n                                        flat\n                                        @click=\"invite(prop.row.ID, $index, item)\"\n                                >连接\n                                </mu-button>\n                                <mu-button @click=\"getRecords(prop.row.ID, $index,item)\">录像</mu-button>\n                            </td>\n                        </template>\n                    </mu-data-table>\n                </template>\n                <template #default=\"{ row: item }\">\n                    <td>{{ item.ID }}</td>\n                    <td>{{ item.Addr }}</td>\n                    <td>{{ item.Channels ? item.Channels.length : 0 }}</td>\n                    <td>\n                        <StartTime :value=\"item.RegisterTime\"></StartTime>\n                    </td>\n                    <td>\n                        <StartTime :value=\"item.UpdateTime\"></StartTime>\n                    </td>\n                    <td>{{ item.Status }}</td>\n                </template>\n            </mu-data-table>\n        </div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 1\">\n            <div class=\"flex-box\">\n                <template v-for=\"(channel,index) in channelShowList\">\n                    <div class=\"flex-item\" :key=\"index\" v-if=\"channel.DeviceID\">\n                        <webrtc-player2 :stream-path=\"'gb28181/'+channel.DeviceID\"></webrtc-player2>\n                    </div>\n                </template>\n            </div>\n            <template v-if=\"channelList.length > 0\">\n                <Page :total=\"channelList.length\" :page-size=\"pageInfo.onePageSize\"\n                      @on-change=\"handlePageChange\"></Page>\n            </template>\n        </div>\n        <webrtc-player\n                ref=\"player\"\n                @ptz=\"sendPtz\"\n                v-model=\"previewStreamPath\"\n                :PublicIP=\"PublicIP\"\n        ></webrtc-player>\n        <records ref=\"records\" v-model=\"recordModal\" :records=\"recordList\" @close=\"initRecordSearch\"></records>\n    </div>\n</template>\n<script>\n    import WebrtcPlayer from \"./components/Player\";\n    import WebrtcPlayer2 from \"./components/Player2\";\n    import Records from './components/Records';\n    import {getPTZCmd, PTZ_TYPE} from \"./utils/ptz-cmd\";\n    import {getOneTimeRange} from \"./utils\";\n\n\n    export default {\n        components: {\n            WebrtcPlayer,\n            WebrtcPlayer2,\n            Records\n        },\n        props: {\n            ListenAddr: String,\n        },\n        computed: {\n            PublicIP() {\n                return this.ListenAddr.split(\":\")[0];\n            },\n        },\n        data() {\n            return {\n                Devices: [],\n                previewStreamPath: false,\n                channelList: [],\n                channelShowList: [],\n                pageInfo: {\n                    onePageSize: 9,\n                    totalPage: 0,\n                    currentPage: 0\n                },\n                recordList: [],\n                recordModal: false,\n                recordSearch: {\n                    id: null,\n                    channel: 0,\n                    deviceId: null\n                },\n                context: {\n                    id: null,\n                    channel: 0,\n                    item: null,\n                },\n                columns: Object.freeze(\n                    [\n                        \"设备号\",\n                        \"地址\",\n                        \"通道数\",\n                        \"注册时间\",\n                        \"更新时间\",\n                        \"状态\",\n                    ].map((title) => ({\n                        title,\n                    }))\n                ),\n                columns2: Object.freeze([\n                    \"通道编号\",\n                    \"名称\",\n                    \"厂商\",\n                    \"地址\",\n                    \"状态\",\n                    \"操作\",\n                ]).map((title) => ({title})),\n            };\n        },\n        created() {\n            this.fetchlist();\n        },\n        mounted() {\n            this.$parent.titleTabs = [\"列表\", \"N路播放\"];\n        },\n        methods: {\n            fetchlist() {\n                const listES = new EventSource(this.apiHost + \"/gb28181/list\");\n                listES.onmessage = (evt) => {\n                    if (!evt.data) return;\n                    this.Devices = JSON.parse(evt.data) || [];\n                    this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));\n                    let channelList = [];\n                    let recordList = [];\n                    this.Devices.forEach((device) => {\n                        const channels = device.Channels || [];\n                        if (channels.length > 0) {\n                            channelList = channelList.concat(channels);\n                        }\n\n                        if (this.recordSearch.id && this.recordSearch.deviceId) {\n                            const channel = channels.filter((i) => {\n                                return i.DeviceID === this.recordSearch.deviceId && this.recordSearch.id === device.ID;\n                            });\n\n                            if (channel) {\n                                this.recordList = channel.Records || [];\n                            }\n                        }\n                    });\n                    if (channelList.length > 0) {\n                        this.channelList = channelList;\n                        this.updatePageInfo(channelList.length);\n                    }\n                };\n                this.$once(\"hook:destroyed\", () => listES.close());\n            },\n            ptz(id, channel, item) {\n                this.context = {\n                    id,\n                    channel,\n                    item,\n                };\n                this.previewStreamPath = true;\n                this.$nextTick(() =>\n                    this.$refs.player.play(\"gb28181/\" + item.DeviceID)\n                );\n            },\n            sendPtz(options) {\n                const ptzCmd = getPTZCmd(options);\n                const ptzCmdStop = getPTZCmd({type: PTZ_TYPE.stop});\n                this.ajax\n                    .get(\"/gb28181/control\", {\n                        id: this.context.id,\n                        channel: this.context.channel,\n                        ptzcmd: ptzCmd,\n                    })\n                    .then((x) => {\n                        if (\n                            options.type === PTZ_TYPE.stop ||\n                            options.cycle === true\n                        ) {\n                            return;\n                        }\n                        setTimeout(() => {\n                            this.ajax.get(\"/gb28181/control\", {\n                                id: this.context.id,\n                                channel: this.context.channel,\n                                ptzcmd: ptzCmdStop,\n                            });\n                        }, 500);\n                    });\n            },\n\n\n            sendQueryRecords(options) {\n\n            },\n\n            handlePageChange(page) {\n                let showList = [];\n                const onePageSize = this.pageInfo.onePageSize;\n                const firstIndex = page * onePageSize - onePageSize;\n                const lastIndex = page * onePageSize - 1;\n                showList = this.channelList.filter((item, index) => {\n                    return index >= firstIndex && index <= lastIndex;\n                });\n\n                this.channelShowList = showList;\n                if (showList.length > 0) {\n                    this.pageInfo.currentPage = page;\n                }\n            },\n            updatePageInfo(totalSize) {\n                const onePageSize = this.pageInfo.onePageSize;\n                let totalPage = totalSize / onePageSize;\n\n                if (totalSize % onePageSize > 0) {\n                    totalPage = totalPage + 1;\n                }\n                this.pageInfo.totalPage = totalPage;\n                if (this.pageInfo.currentPage === 0) {\n                    this.handlePageChange(1)\n                }\n            },\n            invite(id, channel, item) {\n                this.ajax.get(\"/gb28181/invite\", {id, channel}).then((x) => {\n                    item.Connected = true;\n                });\n            },\n            bye(id, channel, item) {\n                this.ajax.get(\"/gb28181/bye\", {id, channel}).then((x) => {\n                    item.Connected = false;\n                });\n            },\n\n            getRecords(id, channel, item) {\n                this.recordSearch.id = id;\n                this.recordSearch.channel = channel;\n                this.recordSearch.deviceId = item.DeviceID;\n                this.recordModal = true;\n                this.$nextTick(() =>\n                    this.$refs.records.getList(this.recordSearch)\n                );\n            },\n\n            initRecordSearch() {\n                this.recordModal = false;\n                this.recordSearch.id = null;\n                this.recordSearch.channel = null;\n                this.recordSearch.deviceId = null;\n                this.recordList = [];\n            }\n        },\n    };\n</script>\n<style scoped>\n    .flex-box {\n        display: flex;\n        flex-flow: row wrap;\n        align-content: flex-start;\n    }\n\n    .flex-item {\n        flex: 0 0 33.3333%;\n        height: 275px;\n        box-sizing: border-box;\n        padding: 10px;\n    }\n</style>\n","import mod from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./App.vue?vue&type=template&id=59b6c9a0&scoped=true&\"\nimport script from \"./App.vue?vue&type=script&lang=js&\"\nexport * from \"./App.vue?vue&type=script&lang=js&\"\nimport style0 from \"./App.vue?vue&type=style&index=0&id=59b6c9a0&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"59b6c9a0\",\n  null\n  \n)\n\nexport default component.exports","import './setPublicPath'\nimport mod from '~entry'\nexport default mod\nexport * from '~entry'\n","// extracted by mini-css-extract-plugin"],"sourceRoot":""}
\ No newline at end of file
diff --git a/ui/dist/plugin-gb28181.css b/ui/dist/plugin-gb28181.css
index 2471e8c..b014d22 100644
--- a/ui/dist/plugin-gb28181.css
+++ b/ui/dist/plugin-gb28181.css
@@ -1 +1 @@
-.arrow1[data-v-76558468]{grid-column:2;grid-row:1}.arrow2[data-v-76558468]{transform:rotate(90deg);grid-column:3;grid-row:2}.arrow3[data-v-76558468]{transform:rotate(180deg);grid-column:2;grid-row:3}.arrow4[data-v-76558468]{transform:rotate(270deg);grid-column:1;grid-row:2}.arrow5[data-v-76558468]{transform:rotate(-45deg);grid-column:1;grid-row:1}.arrow6[data-v-76558468]{transform:rotate(45deg);grid-column:3;grid-row:1}.arrow7[data-v-76558468]{transform:rotate(-135deg);grid-column:1;grid-row:3}.arrow8[data-v-76558468]{transform:rotate(135deg);grid-column:3;grid-row:3}.arrow9[data-v-76558468]{grid-column:2;grid-row:2}.container[data-v-76558468]{position:relative;height:350px}.control[data-v-76558468]{position:absolute;top:20px;right:0;display:grid;grid-template-columns:repeat(3,33.33%);grid-template-rows:repeat(3,33.33%);width:192px;height:192px}.control2[data-v-76558468]{top:210px}.control3[data-v-76558468]{top:260px}.control4[data-v-76558468]{top:310px}.control5[data-v-76558468]{top:360px}.control>[data-v-76558468]{cursor:pointer;fill:grey;width:50px;height:50px}.control5>[data-v-76558468]{margin-right:10px}.control2>[data-v-76558468],.control3>[data-v-76558468],.control4>[data-v-76558468]{width:40px;height:40px}.control>[data-v-76558468]:hover,.cycling[data-v-76558468]{fill:#0ff}.player-wrap[data-v-3d23233a]{width:100%;height:100%;border-radius:4px;box-shadow:0 0 5px #40d3fc,inset 0 0 5px #40d3fc,0 0 0 1px #40d3fc}.player-wrap video[data-v-3d23233a]{width:100%;height:100%}.flex-box[data-v-31458ad7]{display:flex;flex-flow:row wrap;align-content:flex-start}.flex-item[data-v-31458ad7]{flex:0 0 33.3333%;height:275px;box-sizing:border-box;padding:10px}
\ No newline at end of file
+.arrow1[data-v-76558468]{grid-column:2;grid-row:1}.arrow2[data-v-76558468]{transform:rotate(90deg);grid-column:3;grid-row:2}.arrow3[data-v-76558468]{transform:rotate(180deg);grid-column:2;grid-row:3}.arrow4[data-v-76558468]{transform:rotate(270deg);grid-column:1;grid-row:2}.arrow5[data-v-76558468]{transform:rotate(-45deg);grid-column:1;grid-row:1}.arrow6[data-v-76558468]{transform:rotate(45deg);grid-column:3;grid-row:1}.arrow7[data-v-76558468]{transform:rotate(-135deg);grid-column:1;grid-row:3}.arrow8[data-v-76558468]{transform:rotate(135deg);grid-column:3;grid-row:3}.arrow9[data-v-76558468]{grid-column:2;grid-row:2}.container[data-v-76558468]{position:relative;height:350px}.control[data-v-76558468]{position:absolute;top:20px;right:0;display:grid;grid-template-columns:repeat(3,33.33%);grid-template-rows:repeat(3,33.33%);width:192px;height:192px}.control2[data-v-76558468]{top:210px}.control3[data-v-76558468]{top:260px}.control4[data-v-76558468]{top:310px}.control5[data-v-76558468]{top:360px}.control>[data-v-76558468]{cursor:pointer;fill:grey;width:50px;height:50px}.control5>[data-v-76558468]{margin-right:10px}.control2>[data-v-76558468],.control3>[data-v-76558468],.control4>[data-v-76558468]{width:40px;height:40px}.control>[data-v-76558468]:hover,.cycling[data-v-76558468]{fill:#0ff}.player-wrap[data-v-3d23233a]{width:100%;height:100%;border-radius:4px;box-shadow:0 0 5px #40d3fc,inset 0 0 5px #40d3fc,0 0 0 1px #40d3fc}.player-wrap video[data-v-3d23233a]{width:100%;height:100%}.container[data-v-72d12ba2]{position:relative;height:500px;background-image:radial-gradient(rgba(197,45,208,.47843137254901963),rgba(74,23,152,.47843137254901963),rgba(3,0,19,.47843137254901963));color:#fff;background-color:#000;overflow:auto}.search[data-v-72d12ba2]{padding:10px 0}.flex-box[data-v-59b6c9a0]{display:flex;flex-flow:row wrap;align-content:flex-start}.flex-item[data-v-59b6c9a0]{flex:0 0 33.3333%;height:275px;box-sizing:border-box;padding:10px}
\ No newline at end of file
diff --git a/ui/dist/plugin-gb28181.umd.js b/ui/dist/plugin-gb28181.umd.js
index e527651..6e4d050 100644
--- a/ui/dist/plugin-gb28181.umd.js
+++ b/ui/dist/plugin-gb28181.umd.js
@@ -238,7 +238,9 @@ function fromByteArray (uint8) {
 
   // go through the array every three bytes, we'll deal with trailing stuff later
   for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
-    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+    parts.push(encodeChunk(
+      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)
+    ))
   }
 
   // pad the end with zeros, but make sure to not forget the extra bytes
@@ -263,13 +265,6 @@ function fromByteArray (uint8) {
 }
 
 
-/***/ }),
-
-/***/ "2ece":
-/***/ (function(module, exports, __webpack_require__) {
-
-// extracted by mini-css-extract-plugin
-
 /***/ }),
 
 /***/ "8875":
@@ -535,6 +530,17 @@ function bytes2HexString(byte) {
 
 /* WEBPACK VAR INJECTION */}.call(this, __webpack_require__("b639").Buffer))
 
+/***/ }),
+
+/***/ "8fd7":
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_59b6c9a0_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__("fb17");
+/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_59b6c9a0_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_59b6c9a0_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__);
+/* unused harmony reexport * */
+
+
 /***/ }),
 
 /***/ "9152":
@@ -627,6 +633,17 @@ exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
 }
 
 
+/***/ }),
+
+/***/ "a1e1":
+/***/ (function(module, __webpack_exports__, __webpack_require__) {
+
+"use strict";
+/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_Records_vue_vue_type_style_index_0_id_72d12ba2_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__("bbd2");
+/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_Records_vue_vue_type_style_index_0_id_72d12ba2_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_Records_vue_vue_type_style_index_0_id_72d12ba2_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__);
+/* unused harmony reexport * */
+
+
 /***/ }),
 
 /***/ "b639":
@@ -2427,14 +2444,10 @@ function isnan (val) {
 
 /***/ }),
 
-/***/ "bf9c":
-/***/ (function(module, __webpack_exports__, __webpack_require__) {
-
-"use strict";
-/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_31458ad7_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__("2ece");
-/* harmony import */ var _node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_31458ad7_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_node_modules_mini_css_extract_plugin_dist_loader_js_ref_6_oneOf_1_0_node_modules_css_loader_dist_cjs_js_ref_6_oneOf_1_1_node_modules_vue_loader_lib_loaders_stylePostLoader_js_node_modules_postcss_loader_src_index_js_ref_6_oneOf_1_2_node_modules_cache_loader_dist_cjs_js_ref_0_0_node_modules_vue_loader_lib_index_js_vue_loader_options_App_vue_vue_type_style_index_0_id_31458ad7_scoped_true_lang_css___WEBPACK_IMPORTED_MODULE_0__);
-/* unused harmony reexport * */
+/***/ "bbd2":
+/***/ (function(module, exports, __webpack_require__) {
 
+// extracted by mini-css-extract-plugin
 
 /***/ }),
 
@@ -2533,19 +2546,19 @@ if (typeof window !== 'undefined') {
 // Indicate to webpack that this file can be concatenated
 /* harmony default export */ var setPublicPath = (null);
 
-// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"1dab9bb8-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/App.vue?vue&type=template&id=31458ad7&scoped=true&
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"d776bd7c-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/App.vue?vue&type=template&id=59b6c9a0&scoped=true&
 var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',[(_vm.$parent.titleTabActive === 0)?_c('div',{staticClass:"tabpanel"},[_c('mu-data-table',{attrs:{"data":_vm.Devices,"columns":_vm.columns},scopedSlots:_vm._u([{key:"expand",fn:function(prop){return [_c('mu-data-table',{attrs:{"data":prop.row.Channels,"columns":_vm.columns2},scopedSlots:_vm._u([{key:"default",fn:function(ref){
 var item = ref.row;
 var $index = ref.$index;
-return [_c('td',[_vm._v(_vm._s(item.DeviceID))]),_c('td',[_vm._v(_vm._s(item.Name))]),_c('td',[_vm._v(_vm._s(item.Manufacturer))]),_c('td',[_vm._v(_vm._s(item.Address))]),_c('td',[_vm._v(_vm._s(item.Status))]),_c('td',[(item.Connected)?_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.ptz(prop.row.ID, $index, item)}}},[_vm._v("云台 ")]):_vm._e(),(item.Connected)?_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.bye(prop.row.ID, $index)}}},[_vm._v("断开")]):_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.invite(prop.row.ID, $index, item)}}},[_vm._v("连接 ")])],1)]}}],null,true)})]}},{key:"default",fn:function(ref){
+return [_c('td',[_vm._v(_vm._s(item.DeviceID))]),_c('td',[_vm._v(_vm._s(item.Name))]),_c('td',[_vm._v(_vm._s(item.Manufacturer))]),_c('td',[_vm._v(_vm._s(item.Address))]),_c('td',[_vm._v(_vm._s(item.Status))]),_c('td',[(item.Connected)?_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.ptz(prop.row.ID, $index, item)}}},[_vm._v("云台 ")]):_vm._e(),(item.Connected)?_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.bye(prop.row.ID, $index)}}},[_vm._v("断开 ")]):_c('mu-button',{attrs:{"flat":""},on:{"click":function($event){return _vm.invite(prop.row.ID, $index, item)}}},[_vm._v("连接 ")]),_c('mu-button',{on:{"click":function($event){return _vm.getRecords(prop.row.ID, $index,item)}}},[_vm._v("录像")])],1)]}}],null,true)})]}},{key:"default",fn:function(ref){
 var item = ref.row;
-return [_c('td',[_vm._v(_vm._s(item.ID))]),_c('td',[_vm._v(_vm._s(item.Addr))]),_c('td',[_vm._v(_vm._s(item.Channels ? item.Channels.length : 0))]),_c('td',[_c('StartTime',{attrs:{"value":item.RegisterTime}})],1),_c('td',[_c('StartTime',{attrs:{"value":item.UpdateTime}})],1),_c('td',[_vm._v(_vm._s(item.Status))])]}}],null,false,2809573184)})],1):_vm._e(),(_vm.$parent.titleTabActive === 1)?_c('div',{staticClass:"tabpanel"},[_c('div',{staticClass:"flex-box"},[_vm._l((_vm.channelShowList),function(channel,index){return [(channel.DeviceID)?_c('div',{key:index,staticClass:"flex-item"},[_c('webrtc-player2',{attrs:{"stream-path":'gb28181/'+channel.DeviceID}})],1):_vm._e()]})],2),(_vm.channelList.length > 0)?[_c('Page',{attrs:{"total":_vm.channelList.length,"page-size":_vm.pageInfo.onePageSize},on:{"on-change":_vm.handlePageChange}})]:_vm._e()],2):_vm._e(),_c('webrtc-player',{ref:"player",attrs:{"PublicIP":_vm.PublicIP},on:{"ptz":_vm.sendPtz},model:{value:(_vm.previewStreamPath),callback:function ($$v) {_vm.previewStreamPath=$$v},expression:"previewStreamPath"}})],1)}
+return [_c('td',[_vm._v(_vm._s(item.ID))]),_c('td',[_vm._v(_vm._s(item.Addr))]),_c('td',[_vm._v(_vm._s(item.Channels ? item.Channels.length : 0))]),_c('td',[_c('StartTime',{attrs:{"value":item.RegisterTime}})],1),_c('td',[_c('StartTime',{attrs:{"value":item.UpdateTime}})],1),_c('td',[_vm._v(_vm._s(item.Status))])]}}],null,false,2462345042)})],1):_vm._e(),(_vm.$parent.titleTabActive === 1)?_c('div',{staticClass:"tabpanel"},[_c('div',{staticClass:"flex-box"},[_vm._l((_vm.channelShowList),function(channel,index){return [(channel.DeviceID)?_c('div',{key:index,staticClass:"flex-item"},[_c('webrtc-player2',{attrs:{"stream-path":'gb28181/'+channel.DeviceID}})],1):_vm._e()]})],2),(_vm.channelList.length > 0)?[_c('Page',{attrs:{"total":_vm.channelList.length,"page-size":_vm.pageInfo.onePageSize},on:{"on-change":_vm.handlePageChange}})]:_vm._e()],2):_vm._e(),_c('webrtc-player',{ref:"player",attrs:{"PublicIP":_vm.PublicIP},on:{"ptz":_vm.sendPtz},model:{value:(_vm.previewStreamPath),callback:function ($$v) {_vm.previewStreamPath=$$v},expression:"previewStreamPath"}}),_c('records',{ref:"records",attrs:{"records":_vm.recordList},on:{"close":_vm.initRecordSearch},model:{value:(_vm.recordModal),callback:function ($$v) {_vm.recordModal=$$v},expression:"recordModal"}})],1)}
 var staticRenderFns = []
 
 
-// CONCATENATED MODULE: ./src/App.vue?vue&type=template&id=31458ad7&scoped=true&
+// CONCATENATED MODULE: ./src/App.vue?vue&type=template&id=59b6c9a0&scoped=true&
 
-// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"1dab9bb8-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Player.vue?vue&type=template&id=76558468&scoped=true&
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"d776bd7c-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Player.vue?vue&type=template&id=76558468&scoped=true&
 var Playervue_type_template_id_76558468_scoped_true_render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('Modal',_vm._g(_vm._b({attrs:{"draggable":"","width":"750","title":_vm.streamPath},on:{"on-ok":_vm.onClosePreview,"on-cancel":_vm.onClosePreview}},'Modal',_vm.$attrs,false),_vm.$listeners),[_c('div',{staticClass:"container"},[_c('video',{ref:"webrtc",attrs:{"width":"488","height":"275","autoplay":"","muted":"","controls":""},domProps:{"srcObject":_vm.stream,"muted":true}}),_c('div',{staticClass:"control"},[_vm._l((8),function(n){return _c('svg',{class:'arrow'+n,attrs:{"viewBox":"0 0 1024 1024","version":"1.1","xmlns":"http://www.w3.org/2000/svg","xmlns:xlink":"http://www.w3.org/1999/xlink","width":"64","height":"64"},on:{"click":function($event){return _vm.ptzCmdDirection(n)}}},[_c('defs'),_c('path',{attrs:{"d":"M682.666667 955.733333H341.333333a17.066667 17.066667 0 0 1-17.066666-17.066666V529.066667H85.333333a17.066667 17.066667 0 0 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341.333333 0 1 1 170.666667 512 341.333333 341.333333 0 0 1 512 170.666667m0-42.666667a384 384 0 1 0 384 384A384 384 0 0 0 512 128z"}}),_c('path',{attrs:{"fill":"#333333","d":"M298.666667 533.333333H170.666667a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM853.333333 533.333333h-128a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM512 320a21.333333 21.333333 0 0 1-21.333333-21.333333V170.666667a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333333zM512 874.666667a21.333333 21.333333 0 0 1-21.333333-21.333334v-128a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333334z"}})])]),_c('div',{staticClass:"control5"},[_c('i-select',{staticStyle:{"width":"100px"},model:{value:(_vm.ptzPositionIndex),callback:function ($$v) {_vm.ptzPositionIndex=$$v},expression:"ptzPositionIndex"}},_vm._l((10),function(n){return _c('Option',{key:n,attrs:{"value":n}},[_vm._v("预置点"+_vm._s(n))])}),1),_c('i-button',{attrs:{"type":"primary"},on:{"click":function($event){return _vm.ptzCmd(_vm.ptzType.setPos)}}},[_vm._v("设置")]),_c('i-button',{attrs:{"type":"success"},on:{"click":function($event){return _vm.ptzCmd(_vm.ptzType.calPos)}}},[_vm._v("调用")]),_c('i-button',{attrs:{"type":"error"},on:{"click":function($event){return _vm.ptzCmd(_vm.ptzType.delPos)}}},[_vm._v("删除")]),_vm._v(" 速度： "),_c('InputNumber',{attrs:{"max":10,"min":1},model:{value:(_vm.ptzSpeed),callback:function ($$v) {_vm.ptzSpeed=$$v},expression:"ptzSpeed"}})],1)]),_c('div',{attrs:{"slot":"footer"},slot:"footer"},[(_vm.remoteSDP)?_c('mu-badge',[_c('a',{attrs:{"slot":"content","href":_vm.remoteSDPURL,"download":"remoteSDP.txt"},slot:"content"},[_vm._v("remoteSDP")])]):_vm._e(),(_vm.localSDP)?_c('mu-badge',[_c('a',{attrs:{"slot":"content","href":_vm.localSDPURL,"download":"localSDP.txt"},slot:"content"},[_vm._v("localSDP")])]):_vm._e()],1)])}
 var Playervue_type_template_id_76558468_scoped_true_staticRenderFns = []
 
@@ -2815,7 +2828,7 @@ var component = normalizeComponent(
 )
 
 /* harmony default export */ var Player = (component.exports);
-// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"1dab9bb8-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Player2.vue?vue&type=template&id=3d23233a&scoped=true&
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"d776bd7c-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Player2.vue?vue&type=template&id=3d23233a&scoped=true&
 var Player2vue_type_template_id_3d23233a_scoped_true_render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:"player-wrap"},[(_vm.rtcStream)?[_c('video',{attrs:{"autoplay":"","muted":"","controls":""},domProps:{"srcObject":_vm.rtcStream,"muted":true}})]:_vm._e()],2)}
 var Player2vue_type_template_id_3d23233a_scoped_true_staticRenderFns = []
 
@@ -2946,6 +2959,304 @@ var Player2_component = normalizeComponent(
 )
 
 /* harmony default export */ var Player2 = (Player2_component.exports);
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js?{"cacheDirectory":"node_modules/.cache/vue-loader","cacheIdentifier":"d776bd7c-vue-loader-template"}!./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Records.vue?vue&type=template&id=72d12ba2&scoped=true&
+var Recordsvue_type_template_id_72d12ba2_scoped_true_render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('Modal',_vm._g(_vm._b({attrs:{"draggable":"","width":"900","title":"Records"},on:{"on-ok":_vm.onClosePreview,"on-cancel":_vm.onClosePreview}},'Modal',_vm.$attrs,false),_vm.$listeners),[_c('div',{staticClass:"container"},[_c('div',{staticClass:"search"},[_c('DatePicker',{staticStyle:{"width":"200px"},attrs:{"type":"date","options":_vm.timeOptions,"value":_vm.search.time,"placeholder":"请选择时间","clearable":false},on:{"change":_vm.handleTimeChange}})],1),_c('div',[_c('mu-data-table',{attrs:{"columns":_vm.columns,"data":_vm.recordList},scopedSlots:_vm._u([{key:"expand",fn:function(prop){return [_c('div',[_c('m-button',{on:{"click":function($event){return _vm.play(prop.row)}}},[_vm._v("播放")])],1)]}},{key:"default",fn:function(scope){return [_c('td',[_vm._v(_vm._s(scope.row.DeviceID))]),_c('td',[_vm._v(_vm._s(scope.row.Name))]),_c('td',[_vm._v(_vm._s(scope.row.time))]),_c('td',[_vm._v(_vm._s(scope.row.length))]),_c('td',[_vm._v(_vm._s(scope.row.FilePath))]),_c('td',[_vm._v(_vm._s(scope.row.Address))]),_c('td',[_vm._v(_vm._s(scope.row.Type))])]}}])})],1)])])}
+var Recordsvue_type_template_id_72d12ba2_scoped_true_staticRenderFns = []
+
+
+// CONCATENATED MODULE: ./src/components/Records.vue?vue&type=template&id=72d12ba2&scoped=true&
+
+// CONCATENATED MODULE: ./src/utils/index.js
+/**
+ * Date:2020/12/24
+ * Desc:
+ */
+
+function getOneTimeRange(time, options) {
+    let date;
+
+    // 都为空的时候
+    if (!time && !options) {
+        date = new Date();
+    } else if (Object.prototype.toString.call(time) !== '[object Date]' && time !== null && typeof time === 'object') {
+        // time 为 options 参数。
+        options = time;
+        date = new Date();
+    } else if (Object.prototype.toString.call(time) === '[object Date]') {
+        // time 是时间格式
+        date = time;
+    } else {
+        // time 是 int 格式。
+        if (('' + time).length === 10) time = parseInt(time) * 1000;
+        time = +time; // 转成int 型
+        date = new Date(time);
+    }
+
+    options = options || {};
+
+    let result = {
+        start: 0,
+        end: 0
+    };
+
+    let _startTime = new Date(date).setHours(options.startHour || 0, options.startMin || 0, 0, 0);
+    let _endTime = new Date(date).setHours(options.endHour || 23, options.endMin || 59, 59, 0);
+    result.start = new Date(_startTime).getTime();
+    result.end = new Date(_endTime).getTime();
+
+    return result;
+};
+
+
+function formatTimestamp(t) {
+    var d = 0,
+        h = 0,
+        m = 0,
+        s = 0;
+    if (t > 0) {
+        d = Math.floor(t / 1000 / 3600 / 24)
+        h = Math.floor(t / 1000 / 60 / 60 % 24)
+        m = Math.floor(t / 1000 / 60 % 60)
+        s = Math.floor(t / 1000 % 60)
+    }
+
+    return `${d}天${h}时${m}分${s}秒`
+}
+
+function formatTimeTips(timestamp) {
+    let result;
+
+    //
+    if (time > -1) {
+        let hour = Math.floor(timestamp / 3600);
+        let min = Math.floor(timestamp / 60) % 60;
+        let sec = timestamp % 60;
+
+        sec = Math.round(sec);
+
+        if (hour < 10) {
+            result = '0' + hour + ":";
+        } else {
+            result = hour + ":";
+        }
+
+        if (min < 10) {
+            result += "0";
+        }
+        result += min + ":";
+        if (sec < 10) {
+            result += "0";
+        }
+        result += sec.toFixed(0);
+    }
+
+    return result;
+}
+
+
+function parseTime(time, cFormat) {
+    if (arguments.length === 0) {
+        return null
+    }
+    var format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
+    var date;
+    if (typeof time === 'object') {
+        date = time
+    } else {
+        if (('' + time).length === 10) time = parseInt(time) * 1000;
+        time = +time; // 转成int 型
+        date = new Date(time)
+    }
+    var formatObj = {
+        y: date.getFullYear(),
+        m: date.getMonth() + 1,
+        d: date.getDate(),
+        h: date.getHours(),
+        i: date.getMinutes(),
+        s: date.getSeconds(),
+        a: date.getDay()
+    };
+    var time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
+        var value = formatObj[key]
+        if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
+        if (result.length > 0 && value < 10) {
+            value = '0' + value
+        }
+        return value || 0
+    });
+    return time_str
+}
+
+// CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/components/Records.vue?vue&type=script&lang=js&
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+//
+
+
+
+const _now = new Date();
+
+/* harmony default export */ var Recordsvue_type_script_lang_js_ = ({
+    name: "Records",
+    props: {
+        records: Array
+    },
+    data() {
+        return {
+            timeOptions: {
+                disabledDate(date) {
+                    return date && date.valueOf() > Date.now();
+                }
+            },
+            search: {
+                id: null,
+                channel: 0,
+                deviceId: null,
+                time: _now
+            },
+            columns: Object.freeze(
+                [
+                    '设备ID',
+                    '名称',
+                    '时间',
+                    '时长',
+                    '文件路径',
+                    '地址',
+                    '类型'
+                ].map((title) => ({
+                    title,
+                }))
+            )
+        }
+    },
+    computed: {
+        startTime() {
+            if (!this.search.time) {
+                return ''
+            }
+            const start = getOneTimeRange(this.search.time).start;
+            return new Date(start).toISOString();
+        },
+        endTime() {
+
+            if (!this.search.time) {
+                return ''
+            }
+
+            const end = getOneTimeRange(this.search.time).end;
+            return new Date(end).toISOString();
+        },
+        recordList() {
+            const list = this.records.map((record) => {
+                const startTime = new Date(record.StartTime).getTime();
+                const endTime = new Date(record.EndTime).getTime();
+                const timestamp = endTime - startTime;
+                const timeLength = formatTimeTips(timestamp);
+
+                const _startTime = parseTime(startTime);
+
+                record.length = timeLength;
+                record.time = _startTime;
+                return record;
+            });
+            return list;
+        }
+    },
+
+    methods: {
+        getList(options) {
+            this.search.id = options.id;
+            this.search.channel = options.channel;
+            this.search.deviceId = options.deviceId;
+            this._fetchList();
+        },
+
+        _fetchList() {
+            if (this.search.id && this.search.channel && this.startTime && this.endTime) {
+                const query = {
+                    id: this.search.id,
+                    channel: this.search.channel,
+                    startTime: this.search.startTime,
+                    endTime: this.search.endTime
+                };
+
+                this.ajax.get("/gb28181/query/records", query).then((x) => {
+
+                });
+            }
+        },
+        onClosePreview() {
+            this.$emit('close');
+        },
+        handleTimeChange(date) {
+            this.search.time = date;
+            this._fetchList();
+        },
+        play() {
+
+        }
+    }
+});
+
+// CONCATENATED MODULE: ./src/components/Records.vue?vue&type=script&lang=js&
+ /* harmony default export */ var components_Recordsvue_type_script_lang_js_ = (Recordsvue_type_script_lang_js_); 
+// EXTERNAL MODULE: ./src/components/Records.vue?vue&type=style&index=0&id=72d12ba2&scoped=true&lang=css&
+var Recordsvue_type_style_index_0_id_72d12ba2_scoped_true_lang_css_ = __webpack_require__("a1e1");
+
+// CONCATENATED MODULE: ./src/components/Records.vue
+
+
+
+
+
+
+/* normalize component */
+
+var Records_component = normalizeComponent(
+  components_Recordsvue_type_script_lang_js_,
+  Recordsvue_type_template_id_72d12ba2_scoped_true_render,
+  Recordsvue_type_template_id_72d12ba2_scoped_true_staticRenderFns,
+  false,
+  null,
+  "72d12ba2",
+  null
+  
+)
+
+/* harmony default export */ var Records = (Records_component.exports);
 // CONCATENATED MODULE: ./node_modules/cache-loader/dist/cjs.js??ref--0-0!./node_modules/vue-loader/lib??vue-loader-options!./src/App.vue?vue&type=script&lang=js&
 //
 //
@@ -3019,6 +3330,13 @@ var Player2_component = normalizeComponent(
 //
 //
 //
+//
+//
+//
+//
+
+
+
 
 
 
@@ -3028,6 +3346,7 @@ var Player2_component = normalizeComponent(
     components: {
         WebrtcPlayer: Player,
         WebrtcPlayer2: Player2,
+        Records: Records
     },
     props: {
         ListenAddr: String,
@@ -3048,6 +3367,13 @@ var Player2_component = normalizeComponent(
                 totalPage: 0,
                 currentPage: 0
             },
+            recordList: [],
+            recordModal: false,
+            recordSearch: {
+                id: null,
+                channel: 0,
+                deviceId: null
+            },
             context: {
                 id: null,
                 channel: 0,
@@ -3072,7 +3398,7 @@ var Player2_component = normalizeComponent(
                 "地址",
                 "状态",
                 "操作",
-            ]).map((title) => ({ title })),
+            ]).map((title) => ({title})),
         };
     },
     created() {
@@ -3089,11 +3415,22 @@ var Player2_component = normalizeComponent(
                 this.Devices = JSON.parse(evt.data) || [];
                 this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));
                 let channelList = [];
+                let recordList = [];
                 this.Devices.forEach((device) => {
                     const channels = device.Channels || [];
                     if (channels.length > 0) {
                         channelList = channelList.concat(channels);
                     }
+
+                    if (this.recordSearch.id && this.recordSearch.deviceId) {
+                        const channel = channels.filter((i) => {
+                            return i.DeviceID === this.recordSearch.deviceId && this.recordSearch.id === device.ID;
+                        });
+
+                        if (channel) {
+                            this.recordList = channel.Records || [];
+                        }
+                    }
                 });
                 if (channelList.length > 0) {
                     this.channelList = channelList;
@@ -3115,7 +3452,7 @@ var Player2_component = normalizeComponent(
         },
         sendPtz(options) {
             const ptzCmd = Object(ptz_cmd["b" /* getPTZCmd */])(options);
-            const ptzCmdStop = Object(ptz_cmd["b" /* getPTZCmd */])({ type: ptz_cmd["a" /* PTZ_TYPE */].stop });
+            const ptzCmdStop = Object(ptz_cmd["b" /* getPTZCmd */])({type: ptz_cmd["a" /* PTZ_TYPE */].stop});
             this.ajax
                 .get("/gb28181/control", {
                     id: this.context.id,
@@ -3139,21 +3476,26 @@ var Player2_component = normalizeComponent(
                 });
         },
 
-        handlePageChange(page){
+
+        sendQueryRecords(options) {
+
+        },
+
+        handlePageChange(page) {
             let showList = [];
             const onePageSize = this.pageInfo.onePageSize;
             const firstIndex = page * onePageSize - onePageSize;
-            const lastIndex = page * onePageSize - 1 ;
+            const lastIndex = page * onePageSize - 1;
             showList = this.channelList.filter((item, index) => {
                 return index >= firstIndex && index <= lastIndex;
             });
 
             this.channelShowList = showList;
-            if(showList.length > 0){
+            if (showList.length > 0) {
                 this.pageInfo.currentPage = page;
             }
         },
-        updatePageInfo(totalSize){
+        updatePageInfo(totalSize) {
             const onePageSize = this.pageInfo.onePageSize;
             let totalPage = totalSize / onePageSize;
 
@@ -3161,27 +3503,45 @@ var Player2_component = normalizeComponent(
                 totalPage = totalPage + 1;
             }
             this.pageInfo.totalPage = totalPage;
-            if(this.pageInfo.currentPage === 0){
+            if (this.pageInfo.currentPage === 0) {
                 this.handlePageChange(1)
             }
         },
         invite(id, channel, item) {
-            this.ajax.get("/gb28181/invite", { id, channel }).then((x) => {
+            this.ajax.get("/gb28181/invite", {id, channel}).then((x) => {
                 item.Connected = true;
             });
         },
         bye(id, channel, item) {
-            this.ajax.get("/gb28181/bye", { id, channel }).then((x) => {
+            this.ajax.get("/gb28181/bye", {id, channel}).then((x) => {
                 item.Connected = false;
             });
         },
+
+        getRecords(id, channel, item) {
+            this.recordSearch.id = id;
+            this.recordSearch.channel = channel;
+            this.recordSearch.deviceId = item.DeviceID;
+            this.recordModal = true;
+            this.$nextTick(() =>
+                this.$refs.records.getList(this.recordSearch)
+            );
+        },
+
+        initRecordSearch() {
+            this.recordModal = false;
+            this.recordSearch.id = null;
+            this.recordSearch.channel = null;
+            this.recordSearch.deviceId = null;
+            this.recordList = [];
+        }
     },
 });
 
 // CONCATENATED MODULE: ./src/App.vue?vue&type=script&lang=js&
  /* harmony default export */ var src_Appvue_type_script_lang_js_ = (Appvue_type_script_lang_js_); 
-// EXTERNAL MODULE: ./src/App.vue?vue&type=style&index=0&id=31458ad7&scoped=true&lang=css&
-var Appvue_type_style_index_0_id_31458ad7_scoped_true_lang_css_ = __webpack_require__("bf9c");
+// EXTERNAL MODULE: ./src/App.vue?vue&type=style&index=0&id=59b6c9a0&scoped=true&lang=css&
+var Appvue_type_style_index_0_id_59b6c9a0_scoped_true_lang_css_ = __webpack_require__("8fd7");
 
 // CONCATENATED MODULE: ./src/App.vue
 
@@ -3198,7 +3558,7 @@ var App_component = normalizeComponent(
   staticRenderFns,
   false,
   null,
-  "31458ad7",
+  "59b6c9a0",
   null
   
 )
@@ -3211,6 +3571,13 @@ var App_component = normalizeComponent(
 
 
 
+/***/ }),
+
+/***/ "fb17":
+/***/ (function(module, exports, __webpack_require__) {
+
+// extracted by mini-css-extract-plugin
+
 /***/ })
 
 /******/ })["default"];
diff --git a/ui/dist/plugin-gb28181.umd.js.map b/ui/dist/plugin-gb28181.umd.js.map
index 3a4debd..ab10cb1 100644
--- a/ui/dist/plugin-gb28181.umd.js.map
+++ b/ui/dist/plugin-gb28181.umd.js.map
@@ -1 +1 @@
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Uint8Array : Array\n\nvar code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'\nfor (var i = 0, len = code.length; i < len; ++i) {\n  lookup[i] = code[i]\n  revLookup[code.charCodeAt(i)] = i\n}\n\n// Support decoding URL-safe base64 strings, as Node.js does.\n// See: https://en.wikipedia.org/wiki/Base64#URL_applications\nrevLookup['-'.charCodeAt(0)] = 62\nrevLookup['_'.charCodeAt(0)] = 63\n\nfunction getLens (b64) {\n  var len = b64.length\n\n  if (len % 4 > 0) {\n    throw new Error('Invalid string. Length must be a multiple of 4')\n  }\n\n  // Trim off extra bytes after placeholder bytes are found\n  // See: https://github.com/beatgammit/base64-js/issues/42\n  var validLen = b64.indexOf('=')\n  if (validLen === -1) validLen = len\n\n  var placeHoldersLen = validLen === len\n    ? 0\n    : 4 - (validLen % 4)\n\n  return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n  var tmp\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n\n  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n  var curByte = 0\n\n  // if there are placeholders, only get up to the last complete 4 chars\n  var len = placeHoldersLen > 0\n    ? validLen - 4\n    : validLen\n\n  var i\n  for (i = 0; i < len; i += 4) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 18) |\n      (revLookup[b64.charCodeAt(i + 1)] << 12) |\n      (revLookup[b64.charCodeAt(i + 2)] << 6) |\n      revLookup[b64.charCodeAt(i + 3)]\n    arr[curByte++] = (tmp >> 16) & 0xFF\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 2) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 2) |\n      (revLookup[b64.charCodeAt(i + 1)] >> 4)\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 1) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 10) |\n      (revLookup[b64.charCodeAt(i + 1)] << 4) |\n      (revLookup[b64.charCodeAt(i + 2)] >> 2)\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  return arr\n}\n\nfunction tripletToBase64 (num) {\n  return lookup[num >> 18 & 0x3F] +\n    lookup[num >> 12 & 0x3F] +\n    lookup[num >> 6 & 0x3F] +\n    lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n  var tmp\n  var output = []\n  for (var i = start; i < end; i += 3) {\n    tmp =\n      ((uint8[i] << 16) & 0xFF0000) +\n      ((uint8[i + 1] << 8) & 0xFF00) +\n      (uint8[i + 2] & 0xFF)\n    output.push(tripletToBase64(tmp))\n  }\n  return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n  var tmp\n  var len = uint8.length\n  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n  var parts = []\n  var maxChunkLength = 16383 // must be multiple of 3\n\n  // go through the array every three bytes, we'll deal with trailing stuff later\n  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))\n  }\n\n  // pad the end with zeros, but make sure to not forget the extra bytes\n  if (extraBytes === 1) {\n    tmp = uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 2] +\n      lookup[(tmp << 4) & 0x3F] +\n      '=='\n    )\n  } else if (extraBytes === 2) {\n    tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 10] +\n      lookup[(tmp >> 4) & 0x3F] +\n      lookup[(tmp << 2) & 0x3F] +\n      '='\n    )\n  }\n\n  return parts.join('')\n}\n","// extracted by mini-css-extract-plugin","// addapted from the document.currentScript polyfill by Adam Miller\n// MIT license\n// source: https://github.com/amiller-gh/currentScript-polyfill\n\n// added support for Firefox https://bugzilla.mozilla.org/show_bug.cgi?id=1620505\n\n(function (root, factory) {\n  if (typeof define === 'function' && define.amd) {\n    define([], factory);\n  } else if (typeof module === 'object' && module.exports) {\n    module.exports = factory();\n  } else {\n    root.getCurrentScript = factory();\n  }\n}(typeof self !== 'undefined' ? self : this, function () {\n  function getCurrentScript () {\n    var descriptor = Object.getOwnPropertyDescriptor(document, 'currentScript')\n    // for chrome\n    if (!descriptor && 'currentScript' in document && document.currentScript) {\n      return document.currentScript\n    }\n\n    // for other browsers with native support for currentScript\n    if (descriptor && descriptor.get !== getCurrentScript && document.currentScript) {\n      return document.currentScript\n    }\n  \n    // IE 8-10 support script readyState\n    // IE 11+ & Firefox support stack trace\n    try {\n      throw new Error();\n    }\n    catch (err) {\n      // Find the second match for the \"at\" string to get file src url from stack.\n      var ieStackRegExp = /.*at [^(]*\\((.*):(.+):(.+)\\)$/ig,\n        ffStackRegExp = /@([^@]*):(\\d+):(\\d+)\\s*$/ig,\n        stackDetails = ieStackRegExp.exec(err.stack) || ffStackRegExp.exec(err.stack),\n        scriptLocation = (stackDetails && stackDetails[1]) || false,\n        line = (stackDetails && stackDetails[2]) || false,\n        currentLocation = document.location.href.replace(document.location.hash, ''),\n        pageSource,\n        inlineScriptSourceRegExp,\n        inlineScriptSource,\n        scripts = document.getElementsByTagName('script'); // Live NodeList collection\n  \n      if (scriptLocation === currentLocation) {\n        pageSource = document.documentElement.outerHTML;\n        inlineScriptSourceRegExp = new RegExp('(?:[^\\\\n]+?\\\\n){0,' + (line - 2) + '}[^<]*<script>([\\\\d\\\\D]*?)<\\\\/script>[\\\\d\\\\D]*', 'i');\n        inlineScriptSource = pageSource.replace(inlineScriptSourceRegExp, '$1').trim();\n      }\n  \n      for (var i = 0; i < scripts.length; i++) {\n        // If ready state is interactive, return the script tag\n        if (scripts[i].readyState === 'interactive') {\n          return scripts[i];\n        }\n  \n        // If src matches, return the script tag\n        if (scripts[i].src === scriptLocation) {\n          return scripts[i];\n        }\n  \n        // If inline source matches, return the script tag\n        if (\n          scriptLocation === currentLocation &&\n          scripts[i].innerHTML &&\n          scripts[i].innerHTML.trim() === inlineScriptSource\n        ) {\n          return scripts[i];\n        }\n      }\n  \n      // If no match, return null\n      return null;\n    }\n  };\n\n  return getCurrentScript\n}));\n","/**\n * Date:2020/11/9\n * Desc:\n */\n/**\n * Date:2020/11/2\n * Desc: ptz cmd 封装\n * cmd[0] //首字节以05H开头\n * cmd[1] //组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n *        //  校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n * cmd[2] //地址的低8位？？？什么地址，地址范围000h ~ FFFh(0~4095),其中000h为广播地址\n * cmd[3] //指令码\n * cmd[4] //数据1,水平控制速度、聚焦速度\n * cmd[5] //数据2，垂直控制速度、光圈速度\n * cmd[6] // 高4位为数据3=变倍控制速度，低4位为地址高4位\n */\n\nconst PTZ_TYPE = {\n    stop: 'stop',\n    right: 'right',\n    left: 'left',\n    up: 'up',\n    down: 'down',\n    leftUp: 'leftUp',\n    leftDown: 'leftDown',\n    rightUp: 'rightUp',\n    rightDown: 'rightDown',\n    zoomFar: 'zoomFar',\n    zoomNear: 'zoomNear',\n    apertureFar: 'apertureFar',\n    apertureNear: 'apertureNear',\n    focusFar: 'focusFar',\n    focusNear: 'focusNear',\n    setPos: 'setPos',\n    calPos: 'calPos',\n    delPos: 'delPos'\n};\n\nconst PTZ_CMD_TYPE = {\n    stop: 0x00,\n\n    right: 0x01,\n    left: 0x02,\n    up: 0x08,\n    down: 0x04,\n\n    leftUp: 0x0A,\n    leftDown: 0x06,\n    rightUp: 0x09,\n    rightDown: 0x05,\n\n    zoomFar: 0x10, // 镜头 放大\n    zoomNear: 0x20,  // 镜头 缩小\n\n    apertureFar: 0x48, // 光圈 缩小\n    apertureNear: 0x44, // 光圈 放大\n\n    focusFar: 0x42, // 聚焦 近\n    focusNear: 0x41, // 聚焦 远\n\n    setPos: 0x81,\n    calPos: 0x82,\n    delPos: 0x83\n};\n\nconst SPEED_ARRAY = [0x19, 0x32, 0x4b, 0x64, 0x7d, 0x96, 0xAF, 0xC8, 0xE1, 0xFA];\nconst POSITION_ARRAY = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10];\n\n// 获取 direction 方向型\n/**\n *\n * @param options\n *        type:\n *        speed:default 5\n *        index:\n * @returns {string}\n */\nfunction getPTZCmd(options) {\n    const {type, speed, index} = options;\n    const ptzSpeed = getPTZSpeed(speed);\n    let indexValue3, indexValue4, indexValue5, indexValue6;\n    indexValue3 = PTZ_CMD_TYPE[type];\n    switch (type) {\n        case PTZ_TYPE.up:\n        case PTZ_TYPE.down:\n        case PTZ_TYPE.apertureFar:\n        case PTZ_TYPE.apertureNear:\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.right:\n        case PTZ_TYPE.left:\n        case PTZ_TYPE.focusFar:\n        case PTZ_TYPE.focusNear:\n            indexValue4 = ptzSpeed;\n            break;\n        case PTZ_TYPE.leftUp:\n        case PTZ_TYPE.leftDown:\n        case PTZ_TYPE.rightUp:\n        case PTZ_TYPE.rightDown:\n            indexValue4 = ptzSpeed;\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.zoomFar:\n        case PTZ_TYPE.zoomNear:\n            indexValue6 = 0x10;\n            break;\n        case PTZ_TYPE.calPos:\n        case PTZ_TYPE.delPos:\n        case PTZ_TYPE.setPos:\n            indexValue5 = getPTZPositionIndex(index);\n            break;\n        default:\n            break;\n    }\n    return ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6);\n}\n\nfunction getPTZSpeed(speed) {\n    speed = speed || 5;\n    const speedIndex = speed - 1;\n    const ptzSpeed = SPEED_ARRAY[speedIndex] || SPEED_ARRAY[4];\n    return ptzSpeed;\n}\n\nfunction getPTZPositionIndex(index) {\n    return POSITION_ARRAY[index - 1];\n}\n\nfunction ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6) {\n    //\n    let cmd = Buffer.alloc(8);\n    // 首字节以05H开头\n    cmd[0] = 0xA5;\n    // 组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n    cmd[1] = 0x0F;\n    // 校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n    cmd[2] = 0x01;\n    //\n    if (indexValue3) {\n        cmd[3] = indexValue3;\n    }\n    if (indexValue4) {\n        cmd[4] = indexValue4;\n    }\n    if (indexValue5) {\n        cmd[5] = indexValue5;\n    }\n    if (indexValue6) {\n        cmd[6] = indexValue6;\n    }\n\n    cmd[7] = (cmd[0] + cmd[1] + cmd[2] + cmd[3] + cmd[4] + cmd[5] + cmd[6]) % 256;\n\n    return bytes2HexString(cmd);\n}\n\nfunction bytes2HexString(byte) {\n    let hexs = \"\";\n    for (let i = 0; i < byte.length; i++) {\n        let hex = (byte[i]).toString(16);\n        if (hex.length === 1) {\n            hex = '0' + hex;\n        }\n        hexs += hex.toUpperCase();\n    }\n    return hexs;\n}\n\nexport {\n    getPTZCmd,\n    PTZ_TYPE\n}\n","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <http://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n *     incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n  ? global.TYPED_ARRAY_SUPPORT\n  : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n  try {\n    var arr = new Uint8Array(1)\n    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n    return arr.foo() === 42 && // typed array instances can be augmented\n        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n  } catch (e) {\n    return false\n  }\n}\n\nfunction kMaxLength () {\n  return Buffer.TYPED_ARRAY_SUPPORT\n    ? 0x7fffffff\n    : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n  if (kMaxLength() < length) {\n    throw new RangeError('Invalid typed array length')\n  }\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = new Uint8Array(length)\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    if (that === null) {\n      that = new Buffer(length)\n    }\n    that.length = length\n  }\n\n  return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n    return new Buffer(arg, encodingOrOffset, length)\n  }\n\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new Error(\n        'If encoding is specified then the first argument must be a string'\n      )\n    }\n    return allocUnsafe(this, arg)\n  }\n  return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n  arr.__proto__ = Buffer.prototype\n  return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n  if (typeof value === 'number') {\n    throw new TypeError('\"value\" argument must not be a number')\n  }\n\n  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n    return fromArrayBuffer(that, value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'string') {\n    return fromString(that, value, encodingOrOffset)\n  }\n\n  return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n  Buffer.prototype.__proto__ = Uint8Array.prototype\n  Buffer.__proto__ = Uint8Array\n  if (typeof Symbol !== 'undefined' && Symbol.species &&\n      Buffer[Symbol.species] === Buffer) {\n    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n    Object.defineProperty(Buffer, Symbol.species, {\n      value: null,\n      configurable: true\n    })\n  }\n}\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be a number')\n  } else if (size < 0) {\n    throw new RangeError('\"size\" argument must not be negative')\n  }\n}\n\nfunction alloc (that, size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(that, size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpretted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(that, size).fill(fill, encoding)\n      : createBuffer(that, size).fill(fill)\n  }\n  return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n  assertSize(size)\n  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) {\n    for (var i = 0; i < size; ++i) {\n      that[i] = 0\n    }\n  }\n  return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('\"encoding\" must be a valid string encoding')\n  }\n\n  var length = byteLength(string, encoding) | 0\n  that = createBuffer(that, length)\n\n  var actual = that.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    that = that.slice(0, actual)\n  }\n\n  return that\n}\n\nfunction fromArrayLike (that, array) {\n  var length = array.length < 0 ? 0 : checked(array.length) | 0\n  that = createBuffer(that, length)\n  for (var i = 0; i < length; i += 1) {\n    that[i] = array[i] & 255\n  }\n  return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n  array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\\'offset\\' is out of bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\\'length\\' is out of bounds')\n  }\n\n  if (byteOffset === undefined && length === undefined) {\n    array = new Uint8Array(array)\n  } else if (length === undefined) {\n    array = new Uint8Array(array, byteOffset)\n  } else {\n    array = new Uint8Array(array, byteOffset, length)\n  }\n\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = array\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    that = fromArrayLike(that, array)\n  }\n  return that\n}\n\nfunction fromObject (that, obj) {\n  if (Buffer.isBuffer(obj)) {\n    var len = checked(obj.length) | 0\n    that = createBuffer(that, len)\n\n    if (that.length === 0) {\n      return that\n    }\n\n    obj.copy(that, 0, 0, len)\n    return that\n  }\n\n  if (obj) {\n    if ((typeof ArrayBuffer !== 'undefined' &&\n        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n      if (typeof obj.length !== 'number' || isnan(obj.length)) {\n        return createBuffer(that, 0)\n      }\n      return fromArrayLike(that, obj)\n    }\n\n    if (obj.type === 'Buffer' && isArray(obj.data)) {\n      return fromArrayLike(that, obj.data)\n    }\n  }\n\n  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < kMaxLength()` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= kMaxLength()) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + kMaxLength().toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError('Arguments must be Buffers')\n  }\n\n  if (a === b) return 0\n\n  var x = a.length\n  var y = b.length\n\n  for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  var i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  var buffer = Buffer.allocUnsafe(length)\n  var pos = 0\n  for (i = 0; i < list.length; ++i) {\n    var buf = list[i]\n    if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    }\n    buf.copy(buffer, pos)\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    string = '' + string\n  }\n\n  var len = string.length\n  if (len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n      case undefined:\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) return utf8ToBytes(string).length // assume utf8\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  var loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  var i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  var len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (var i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  var len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (var i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  var len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (var i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  var length = this.length | 0\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  var str = ''\n  var max = exports.INSPECT_MAX_BYTES\n  if (this.length > 0) {\n    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n    if (this.length > max) str += ' ... '\n  }\n  return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError('Argument must be a Buffer')\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  var x = thisEnd - thisStart\n  var y = end - start\n  var len = Math.min(x, y)\n\n  var thisCopy = this.slice(thisStart, thisEnd)\n  var targetCopy = target.slice(start, end)\n\n  for (var i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset  // Coerce to Number.\n  if (isNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (Buffer.TYPED_ARRAY_SUPPORT &&\n        typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  var indexSize = 1\n  var arrLength = arr.length\n  var valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  var i\n  if (dir) {\n    var foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      var found = true\n      for (var j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  var remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  // must be an even number of digits\n  var strLen = string.length\n  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  for (var i = 0; i < length; ++i) {\n    var parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (isNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n  return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset | 0\n    if (isFinite(length)) {\n      length = length | 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  // legacy write(string, encoding, offset, length) - remove in v0.13\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  var remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n        return asciiWrite(this, string, offset, length)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Write(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  var res = []\n\n  var i = start\n  while (i < end) {\n    var firstByte = buf[i]\n    var codePoint = null\n    var bytesPerSequence = (firstByte > 0xEF) ? 4\n      : (firstByte > 0xDF) ? 3\n      : (firstByte > 0xBF) ? 2\n      : 1\n\n    if (i + bytesPerSequence <= end) {\n      var secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  var len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  var res = ''\n  var i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  var len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  var out = ''\n  for (var i = start; i < end; ++i) {\n    out += toHex(buf[i])\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  var bytes = buf.slice(start, end)\n  var res = ''\n  for (var i = 0; i < bytes.length; i += 2) {\n    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  var len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  var newBuf\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    newBuf = this.subarray(start, end)\n    newBuf.__proto__ = Buffer.prototype\n  } else {\n    var sliceLen = end - start\n    newBuf = new Buffer(sliceLen, undefined)\n    for (var i = 0; i < sliceLen; ++i) {\n      newBuf[i] = this[i + start]\n    }\n  }\n\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  var val = this[offset + --byteLength]\n  var mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var i = byteLength\n  var mul = 1\n  var val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var mul = 1\n  var i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n      (littleEndian ? i : 1 - i) * 8\n  }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffffffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n  }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset + 3] = (value >>> 24)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 1] = (value >>> 8)\n    this[offset] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = 0\n  var mul = 1\n  var sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  var sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 3] = (value >>> 24)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  var len = end - start\n  var i\n\n  if (this === target && start < targetStart && targetStart < end) {\n    // descending copy from end\n    for (i = len - 1; i >= 0; --i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n    // ascending copy from start\n    for (i = 0; i < len; ++i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, start + len),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (val.length === 1) {\n      var code = val.charCodeAt(0)\n      if (code < 256) {\n        val = code\n      }\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  var i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    var bytes = Buffer.isBuffer(val)\n      ? val\n      : utf8ToBytes(new Buffer(val, encoding).toString())\n    var len = bytes.length\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction stringtrim (str) {\n  if (str.trim) return str.trim()\n  return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n  if (n < 16) return '0' + n.toString(16)\n  return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  var codePoint\n  var length = string.length\n  var leadSurrogate = null\n  var bytes = []\n\n  for (var i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        } else if (i + 1 === length) {\n          // unpaired lead\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        }\n\n        // valid lead\n        leadSurrogate = codePoint\n\n        continue\n      }\n\n      // 2 leads in a row\n      if (codePoint < 0xDC00) {\n        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n        leadSurrogate = codePoint\n        continue\n      }\n\n      // valid surrogate pair\n      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n    } else if (leadSurrogate) {\n      // valid bmp char, but last char was a lead\n      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n    }\n\n    leadSurrogate = null\n\n    // encode utf8\n    if (codePoint < 0x80) {\n      if ((units -= 1) < 0) break\n      bytes.push(codePoint)\n    } else if (codePoint < 0x800) {\n      if ((units -= 2) < 0) break\n      bytes.push(\n        codePoint >> 0x6 | 0xC0,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x10000) {\n      if ((units -= 3) < 0) break\n      bytes.push(\n        codePoint >> 0xC | 0xE0,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x110000) {\n      if ((units -= 4) < 0) break\n      bytes.push(\n        codePoint >> 0x12 | 0xF0,\n        codePoint >> 0xC & 0x3F | 0x80,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else {\n      throw new Error('Invalid code point')\n    }\n  }\n\n  return bytes\n}\n\nfunction asciiToBytes (str) {\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    // Node's code seems to be doing this and not & 0x7F..\n    byteArray.push(str.charCodeAt(i) & 0xFF)\n  }\n  return byteArray\n}\n\nfunction utf16leToBytes (str, units) {\n  var c, hi, lo\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    if ((units -= 2) < 0) break\n\n    c = str.charCodeAt(i)\n    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xmlns=\"http://www.w3.org/2000/svg\"><path d=\"M512 170.666667A341.333333 341.333333 0 1 1 170.666667 512 341.333333 341.333333 0 0 1 512 170.666667m0-42.666667a384 384 0 1 0 384 384A384 384 0 0 0 512 128z\"  /><path fill=\"#333333\" d=\"M298.666667 533.333333H170.666667a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM853.333333 533.333333h-128a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM512 320a21.333333 21.333333 0 0 1-21.333333-21.333333V170.666667a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333333zM512 874.666667a21.333333 21.333333 0 0 1-21.333333-21.333334v-128a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333334z\"  /></svg>\n      </div>\n      <div class=\"control5\">\n        <i-select v-model=\"ptzPositionIndex\" style=\"width: 100px\">\n          <Option v-for=\"n in 10\" :value=\"n\" :key=\"n\">预置点{{n}}</Option>\n        </i-select>\n        <i-button type=\"primary\" @click=\"ptzCmd(ptzType.setPos)\">设置</i-button>\n        <i-button type=\"success\" @click=\"ptzCmd(ptzType.calPos)\">调用</i-button>\n        <i-button type=\"error\" @click=\"ptzCmd(ptzType.delPos)\">删除</i-button>\n        速度：\n        <InputNumber :max=\"10\" :min=\"1\" v-model=\"ptzSpeed\"></InputNumber>\n      </div>\n    </div>\n    <div slot=\"footer\">\n      <mu-badge v-if=\"remoteSDP\">\n        <a slot=\"content\" :href=\"remoteSDPURL\" download=\"remoteSDP.txt\">remoteSDP</a>\n      </mu-badge>\n      <mu-badge v-if=\"localSDP\">\n        <a slot=\"content\" :href=\"localSDPURL\" download=\"localSDP.txt\">localSDP</a>\n      </mu-badge>\n    </div>\n  </Modal>\n</template>\n<script>\n  import {PTZ_TYPE} from \"../utils/ptz-cmd\";\n  const PTZ_DIRECTION_ARRAY = [PTZ_TYPE.up,PTZ_TYPE.right,PTZ_TYPE.down,PTZ_TYPE.left,PTZ_TYPE.leftUp,PTZ_TYPE.rightUp,PTZ_TYPE.leftDown,PTZ_TYPE.rightDown];\n  let pc = null;\nexport default {\n  data() {\n    return {\n      iceConnectionState: pc && pc.iceConnectionState,\n      stream: null,\n      localSDP: \"\",\n      remoteSDP: \"\",\n      remoteSDPURL: \"\",\n      localSDPURL: \"\",\n      streamPath: \"\",\n      ptzSpeed:5,\n      ptzPositionIndex:1,\n      ptzType:PTZ_TYPE,\n    };\n  },\n  props:{\n    PublicIP:String\n  },\n    methods: {\n        async play(streamPath) {\n            pc = new RTCPeerConnection();\n            pc.addTransceiver('video',{\n              direction:'recvonly'\n            })\n            this.streamPath = streamPath;\n            pc.onsignalingstatechange = e => {\n                //console.log(e);\n            };\n            pc.oniceconnectionstatechange = e => {\n                this.$toast.info(pc.iceConnectionState);\n                this.iceConnectionState = pc.iceConnectionState;\n            };\n            pc.onicecandidate = event => {\n                console.log(event)\n            };\n            pc.ontrack = event => {\n               // console.log(event);\n                if (event.track.kind == \"video\")\n                    this.stream = event.streams[0];\n            };\n            await pc.setLocalDescription(await pc.createOffer());\n            this.localSDP = pc.localDescription.sdp;\n            this.localSDPURL = URL.createObjectURL(\n                new Blob([this.localSDP], { type: \"text/plain\" })\n            );\n            const result = await this.ajax({\n                type: \"POST\",\n                processData: false,\n                data: JSON.stringify(pc.localDescription.toJSON()),\n                url: \"/webrtc/play?streamPath=\" + this.streamPath,\n                dataType: \"json\"\n            });\n            if (result.errmsg) {\n                this.$toast.error(result.errmsg);\n                return;\n            } else {\n                this.remoteSDP = result.sdp;\n                this.remoteSDPURL = URL.createObjectURL(new Blob([this.remoteSDP], { type: \"text/plain\" }));\n            }\n            await pc.setRemoteDescription(new RTCSessionDescription(result));\n        },\n        ptzCmdDirection(direction){\n          const type = PTZ_DIRECTION_ARRAY[direction-1];\n          this.ptzCmd(type);\n        },\n        startPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.right,true);\n        },\n        stopPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.stop);\n        },\n        ptzCmd(type,isCycling){\n          this.$emit('ptz',{type:type,speed:this.ptzSpeed,index:this.ptzPositionIndex,cycle:isCycling})\n        },\n        onClosePreview() {\n            pc.close();\n        }\n    }\n};\n</script>\n<style scoped>\n  .arrow1{\n    grid-column: 2;\n    grid-row: 1;\n  }\n  .arrow2{\n    transform: rotate(90deg);\n    grid-column: 3;\n    grid-row: 2;\n  }\n  .arrow3{\n    transform: rotate(180deg);\n    grid-column: 2;\n    grid-row: 3;\n  }\n  .arrow4{\n    transform: rotate(270deg);\n    grid-column: 1;\n    grid-row: 2;\n  }\n\n  .arrow5{\n    transform: rotate(-45deg);\n    grid-column: 1;\n    grid-row: 1;\n  }\n\n  .arrow6{\n    transform: rotate(45deg);\n    grid-column: 3;\n    grid-row: 1;\n  }\n\n  .arrow7{\n    transform: rotate(-135deg);\n    grid-column: 1;\n    grid-row: 3;\n  }\n\n  .arrow8{\n    transform: rotate(135deg);\n    grid-column: 3;\n    grid-row: 3;\n  }\n\n  .arrow9{\n    grid-column: 2;\n    grid-row: 2;\n  }\n\n.container {\n  position: relative;\n  height: 350px;\n}\n.control {\n  position: absolute;\n  top: 20px;\n  right: 0;\n  display: grid;\n  grid-template-columns: repeat(3, 33.33%);\n  grid-template-rows: repeat(3, 33.33%);\n  width: 192px;\n  height: 192px;\n}\n\n.control2{\n  top: 210px;\n}\n\n.control3{\n  top: 260px;\n}\n\n.control4{\n  top: 310px;\n}\n\n.control5{\n  top: 360px;\n}\n\n.control >* {\n  cursor: pointer;\n  fill: gray;\n  width: 50px;\n  height: 50px;\n}\n\n.control5 >*{\n  margin-right: 10px;\n}\n\n.control2 >*,.control3 >*,.control4 >*{\n  width: 40px;\n  height: 40px;\n}\n\n.control >*:hover,.cycling{\n  fill: cyan\n}\n\n\n\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"","/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nexport default function normalizeComponent (\n  scriptExports,\n  render,\n  staticRenderFns,\n  functionalTemplate,\n  injectStyles,\n  scopeId,\n  moduleIdentifier, /* server only */\n  shadowMode /* vue-cli only */\n) {\n  // Vue.extend constructor export interop\n  var options = typeof scriptExports === 'function'\n    ? scriptExports.options\n    : scriptExports\n\n  // render functions\n  if (render) {\n    options.render = render\n    options.staticRenderFns = staticRenderFns\n    options._compiled = true\n  }\n\n  // functional template\n  if (functionalTemplate) {\n    options.functional = true\n  }\n\n  // scopedId\n  if (scopeId) {\n    options._scopeId = 'data-v-' + scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = shadowMode\n      ? function () {\n        injectStyles.call(\n          this,\n          (options.functional ? this.parent : this).$root.$options.shadowRoot\n        )\n      }\n      : injectStyles\n  }\n\n  if (hook) {\n    if (options.functional) {\n      // for template-only hot-reload because in that case the render fn doesn't\n      // go through the normalizer\n      options._injectStyles = hook\n      // register for functional component in vue file\n      var originalRender = options.render\n      options.render = function renderWithStyleInjection (h, context) {\n        hook.call(context)\n        return originalRender(h, context)\n      }\n    } else {\n      // inject component registration as beforeCreate hook\n      var existing = options.beforeCreate\n      options.beforeCreate = existing\n        ? [].concat(existing, hook)\n        : [hook]\n    }\n  }\n\n  return {\n    exports: scriptExports,\n    options: options\n  }\n}\n","import { render, staticRenderFns } from \"./Player.vue?vue&type=template&id=76558468&scoped=true&\"\nimport script from \"./Player.vue?vue&type=script&lang=js&\"\nexport * from \"./Player.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player.vue?vue&type=style&index=0&id=76558468&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"76558468\",\n  null\n  \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:\"player-wrap\"},[(_vm.rtcStream)?[_c('video',{attrs:{\"autoplay\":\"\",\"muted\":\"\",\"controls\":\"\"},domProps:{\"srcObject\":_vm.rtcStream,\"muted\":true}})]:_vm._e()],2)}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","<template>\n    <div class=\"player-wrap\">\n        <template v-if=\"rtcStream\">\n            <video :srcObject.prop=\"rtcStream\" autoplay muted controls></video>\n        </template>\n    </div>\n</template>\n\n<script>\n    export default {\n        name: \"WebrtcPlayer\",\n        rtcPeerConnection: null,\n        data() {\n            return {\n                iceConnectionState: '',\n                rtcPeerConnectionInit: false,\n                rtcStream: null\n            }\n        },\n        props: {\n            streamPath: {\n                type: String,\n                default: ''\n            }\n        },\n        async created() {\n            await this.initRtcPeerConnection();\n            console.log('initRtcPeerConnectioned');\n            if (this.streamPath) {\n                await this.play(this.streamPath);\n                console.log('played');\n            }\n        },\n        methods: {\n            async initRtcPeerConnection() {\n                const rtcPeerConnection = new RTCPeerConnection();\n\n                rtcPeerConnection.addTransceiver('video', {\n                    direction: \"recvonly\"\n                });\n\n                rtcPeerConnection.onsignalingstatechange = e => {\n                    console.log('onsignalingstatechange', e);\n                };\n\n                rtcPeerConnection.oniceconnectionstatechange = e => {\n                    console.log('oniceconnectionstatechange', rtcPeerConnection.iceConnectionState);\n                };\n\n                rtcPeerConnection.onicecandidate = event => {\n                    console.log('onicecandidate', event);\n                };\n\n                rtcPeerConnection.ontrack = event => {\n                    console.log('ontrack', event);\n                    if (event.track.kind === \"video\") {\n                        this.rtcStream = event.streams[0];\n                    }\n                };\n\n                const rtcSessionDescriptionInit = await rtcPeerConnection.createOffer();\n                await rtcPeerConnection.setLocalDescription(rtcSessionDescriptionInit);\n                this.rtcPeerConnectionInit = true;\n                this.$options.rtcPeerConnection = rtcPeerConnection;\n            },\n\n            //\n            async play(streamPath) {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                const localDescriptionData = rtcPeerConnection.localDescription.toJSON();\n                const result = await this.ajax({\n                    type: \"POST\",\n                    processData: false,\n                    data: JSON.stringify(localDescriptionData),\n                    url: \"/webrtc/play?streamPath=\" + streamPath,\n                    dataType: \"json\"\n                });\n                if (result.errmsg) {\n                    console.error(result.errmsg);\n                    return;\n                }\n                //\n                rtcPeerConnection.setRemoteDescription(new RTCSessionDescription({\n                    type: result.type,\n                    sdp: result.sdp\n                }));\n            },\n            close() {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                rtcPeerConnection && rtcPeerConnection.close();\n            }\n        },\n        destroyed() {\n            this.close();\n        }\n    }\n</script>\n\n<style scoped>\n    .player-wrap {\n        width: 100%;\n        height: 100%;\n        border-radius: 4px;\n        box-shadow: 0 0 5px #40d3fc, inset 0 0 5px #40d3fc, 0 0 0 1px #40d3fc;\n    }\n\n    .player-wrap video {\n        width: 100%;\n        height: 100%;\n    }\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Player2.vue?vue&type=template&id=3d23233a&scoped=true&\"\nimport script from \"./Player2.vue?vue&type=script&lang=js&\"\nexport * from \"./Player2.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player2.vue?vue&type=style&index=0&id=3d23233a&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"3d23233a\",\n  null\n  \n)\n\nexport default component.exports","<template>\n    <div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 0\">\n            <mu-data-table :data=\"Devices\" :columns=\"columns\">\n                <template #expand=\"prop\">\n                    <mu-data-table\n                        :data=\"prop.row.Channels\"\n                        :columns=\"columns2\"\n                    >\n                        <template #default=\"{ row: item, $index }\">\n                            <td>{{ item.DeviceID }}</td>\n                            <td>{{ item.Name }}</td>\n                            <td>{{ item.Manufacturer }}</td>\n                            <td>{{ item.Address }}</td>\n                            <td>{{ item.Status }}</td>\n                            <td>\n                                <mu-button\n                                    flat\n                                    v-if=\"item.Connected\"\n                                    @click=\"ptz(prop.row.ID, $index, item)\"\n                                    >云台\n                                </mu-button>\n                                <mu-button\n                                    flat\n                                    v-if=\"item.Connected\"\n                                    @click=\"bye(prop.row.ID, $index)\"\n                                    >断开</mu-button\n                                >\n                                <mu-button\n                                    v-else\n                                    flat\n                                    @click=\"invite(prop.row.ID, $index, item)\"\n                                    >连接\n                                </mu-button>\n                            </td>\n                        </template>\n                    </mu-data-table>\n                </template>\n                <template #default=\"{ row: item }\">\n                    <td>{{ item.ID }}</td>\n                    <td>{{ item.Addr }}</td>\n                    <td>{{ item.Channels ? item.Channels.length : 0 }}</td>\n                    <td>\n                        <StartTime :value=\"item.RegisterTime\"></StartTime>\n                    </td>\n                    <td>\n                        <StartTime :value=\"item.UpdateTime\"></StartTime>\n                    </td>\n                    <td>{{ item.Status }}</td>\n                </template>\n            </mu-data-table>\n        </div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 1\">\n            <div class=\"flex-box\">\n                <template v-for=\"(channel,index) in channelShowList\">\n                    <div class=\"flex-item\" :key=\"index\" v-if=\"channel.DeviceID\">\n                        <webrtc-player2 :stream-path=\"'gb28181/'+channel.DeviceID\"></webrtc-player2>\n                    </div>\n                </template>\n            </div>\n            <template v-if=\"channelList.length > 0\">\n                <Page :total=\"channelList.length\" :page-size=\"pageInfo.onePageSize\" @on-change=\"handlePageChange\"></Page>\n            </template>\n        </div>\n        <webrtc-player\n            ref=\"player\"\n            @ptz=\"sendPtz\"\n            v-model=\"previewStreamPath\"\n            :PublicIP=\"PublicIP\"\n        ></webrtc-player>\n    </div>\n</template>\n<script>\nimport WebrtcPlayer from \"./components/Player\";\nimport WebrtcPlayer2 from \"./components/Player2\";\nimport { getPTZCmd, PTZ_TYPE } from \"./utils/ptz-cmd\";\n\nexport default {\n    components: {\n        WebrtcPlayer,\n        WebrtcPlayer2,\n    },\n    props: {\n        ListenAddr: String,\n    },\n    computed: {\n        PublicIP() {\n            return this.ListenAddr.split(\":\")[0];\n        },\n    },\n    data() {\n        return {\n            Devices: [],\n            previewStreamPath: false,\n            channelList: [],\n            channelShowList: [],\n            pageInfo: {\n                onePageSize: 9,\n                totalPage: 0,\n                currentPage: 0\n            },\n            context: {\n                id: null,\n                channel: 0,\n                item: null,\n            },\n            columns: Object.freeze(\n                [\n                    \"设备号\",\n                    \"地址\",\n                    \"通道数\",\n                    \"注册时间\",\n                    \"更新时间\",\n                    \"状态\",\n                ].map((title) => ({\n                    title,\n                }))\n            ),\n            columns2: Object.freeze([\n                \"通道编号\",\n                \"名称\",\n                \"厂商\",\n                \"地址\",\n                \"状态\",\n                \"操作\",\n            ]).map((title) => ({ title })),\n        };\n    },\n    created() {\n        this.fetchlist();\n    },\n    mounted() {\n        this.$parent.titleTabs = [\"列表\", \"N路播放\"];\n    },\n    methods: {\n        fetchlist() {\n            const listES = new EventSource(this.apiHost + \"/gb28181/list\");\n            listES.onmessage = (evt) => {\n                if (!evt.data) return;\n                this.Devices = JSON.parse(evt.data) || [];\n                this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));\n                let channelList = [];\n                this.Devices.forEach((device) => {\n                    const channels = device.Channels || [];\n                    if (channels.length > 0) {\n                        channelList = channelList.concat(channels);\n                    }\n                });\n                if (channelList.length > 0) {\n                    this.channelList = channelList;\n                    this.updatePageInfo(channelList.length);\n                }\n            };\n            this.$once(\"hook:destroyed\", () => listES.close());\n        },\n        ptz(id, channel, item) {\n            this.context = {\n                id,\n                channel,\n                item,\n            };\n            this.previewStreamPath = true;\n            this.$nextTick(() =>\n                this.$refs.player.play(\"gb28181/\" + item.DeviceID)\n            );\n        },\n        sendPtz(options) {\n            const ptzCmd = getPTZCmd(options);\n            const ptzCmdStop = getPTZCmd({ type: PTZ_TYPE.stop });\n            this.ajax\n                .get(\"/gb28181/control\", {\n                    id: this.context.id,\n                    channel: this.context.channel,\n                    ptzcmd: ptzCmd,\n                })\n                .then((x) => {\n                    if (\n                        options.type === PTZ_TYPE.stop ||\n                        options.cycle === true\n                    ) {\n                        return;\n                    }\n                    setTimeout(() => {\n                        this.ajax.get(\"/gb28181/control\", {\n                            id: this.context.id,\n                            channel: this.context.channel,\n                            ptzcmd: ptzCmdStop,\n                        });\n                    }, 500);\n                });\n        },\n\n        handlePageChange(page){\n            let showList = [];\n            const onePageSize = this.pageInfo.onePageSize;\n            const firstIndex = page * onePageSize - onePageSize;\n            const lastIndex = page * onePageSize - 1 ;\n            showList = this.channelList.filter((item, index) => {\n                return index >= firstIndex && index <= lastIndex;\n            });\n\n            this.channelShowList = showList;\n            if(showList.length > 0){\n                this.pageInfo.currentPage = page;\n            }\n        },\n        updatePageInfo(totalSize){\n            const onePageSize = this.pageInfo.onePageSize;\n            let totalPage = totalSize / onePageSize;\n\n            if (totalSize % onePageSize > 0) {\n                totalPage = totalPage + 1;\n            }\n            this.pageInfo.totalPage = totalPage;\n            if(this.pageInfo.currentPage === 0){\n                this.handlePageChange(1)\n            }\n        },\n        invite(id, channel, item) {\n            this.ajax.get(\"/gb28181/invite\", { id, channel }).then((x) => {\n                item.Connected = true;\n            });\n        },\n        bye(id, channel, item) {\n            this.ajax.get(\"/gb28181/bye\", { id, channel }).then((x) => {\n                item.Connected = false;\n            });\n        },\n    },\n};\n</script>\n<style scoped>\n.flex-box {\n    display: flex;\n    flex-flow: row wrap;\n    align-content: flex-start;\n}\n\n.flex-item {\n    flex: 0 0 33.3333%;\n    height: 275px;\n    box-sizing: border-box;\n    padding: 10px;\n}\n</style>\n","import mod from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./App.vue?vue&type=template&id=31458ad7&scoped=true&\"\nimport script from \"./App.vue?vue&type=script&lang=js&\"\nexport * from \"./App.vue?vue&type=script&lang=js&\"\nimport style0 from \"./App.vue?vue&type=style&index=0&id=31458ad7&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"31458ad7\",\n  null\n  \n)\n\nexport default component.exports","import './setPublicPath'\nimport mod from '~entry'\nexport default mod\nexport * from '~entry'\n"],"sourceRoot":""}
\ No newline at end of file
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module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = \"fb15\");\n","export * from \"-!../../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=style&index=0&id=76558468&scoped=true&lang=css&\"","'use strict'\n\nexports.byteLength = byteLength\nexports.toByteArray = toByteArray\nexports.fromByteArray = fromByteArray\n\nvar lookup = []\nvar revLookup = []\nvar Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array\n\nvar code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'\nfor (var i = 0, len = code.length; i < len; ++i) {\n  lookup[i] = code[i]\n  revLookup[code.charCodeAt(i)] = i\n}\n\n// Support decoding URL-safe base64 strings, as Node.js does.\n// See: https://en.wikipedia.org/wiki/Base64#URL_applications\nrevLookup['-'.charCodeAt(0)] = 62\nrevLookup['_'.charCodeAt(0)] = 63\n\nfunction getLens (b64) {\n  var len = b64.length\n\n  if (len % 4 > 0) {\n    throw new Error('Invalid string. Length must be a multiple of 4')\n  }\n\n  // Trim off extra bytes after placeholder bytes are found\n  // See: https://github.com/beatgammit/base64-js/issues/42\n  var validLen = b64.indexOf('=')\n  if (validLen === -1) validLen = len\n\n  var placeHoldersLen = validLen === len\n    ? 0\n    : 4 - (validLen % 4)\n\n  return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n  var tmp\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n\n  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n  var curByte = 0\n\n  // if there are placeholders, only get up to the last complete 4 chars\n  var len = placeHoldersLen > 0\n    ? validLen - 4\n    : validLen\n\n  var i\n  for (i = 0; i < len; i += 4) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 18) |\n      (revLookup[b64.charCodeAt(i + 1)] << 12) |\n      (revLookup[b64.charCodeAt(i + 2)] << 6) |\n      revLookup[b64.charCodeAt(i + 3)]\n    arr[curByte++] = (tmp >> 16) & 0xFF\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 2) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 2) |\n      (revLookup[b64.charCodeAt(i + 1)] >> 4)\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 1) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 10) |\n      (revLookup[b64.charCodeAt(i + 1)] << 4) |\n      (revLookup[b64.charCodeAt(i + 2)] >> 2)\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  return arr\n}\n\nfunction tripletToBase64 (num) {\n  return lookup[num >> 18 & 0x3F] +\n    lookup[num >> 12 & 0x3F] +\n    lookup[num >> 6 & 0x3F] +\n    lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n  var tmp\n  var output = []\n  for (var i = start; i < end; i += 3) {\n    tmp =\n      ((uint8[i] << 16) & 0xFF0000) +\n      ((uint8[i + 1] << 8) & 0xFF00) +\n      (uint8[i + 2] & 0xFF)\n    output.push(tripletToBase64(tmp))\n  }\n  return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n  var tmp\n  var len = uint8.length\n  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n  var parts = []\n  var maxChunkLength = 16383 // must be multiple of 3\n\n  // go through the array every three bytes, we'll deal with trailing stuff later\n  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n    parts.push(encodeChunk(\n      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)\n    ))\n  }\n\n  // pad the end with zeros, but make sure to not forget the extra bytes\n  if (extraBytes === 1) {\n    tmp = uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 2] +\n      lookup[(tmp << 4) & 0x3F] +\n      '=='\n    )\n  } else if (extraBytes === 2) {\n    tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 10] +\n      lookup[(tmp >> 4) & 0x3F] +\n      lookup[(tmp << 2) & 0x3F] +\n      '='\n    )\n  }\n\n  return parts.join('')\n}\n","// addapted from the document.currentScript polyfill by Adam Miller\n// MIT license\n// source: https://github.com/amiller-gh/currentScript-polyfill\n\n// added support for Firefox https://bugzilla.mozilla.org/show_bug.cgi?id=1620505\n\n(function (root, factory) {\n  if (typeof define === 'function' && define.amd) {\n    define([], factory);\n  } else if (typeof module === 'object' && module.exports) {\n    module.exports = factory();\n  } else {\n    root.getCurrentScript = factory();\n  }\n}(typeof self !== 'undefined' ? self : this, function () {\n  function getCurrentScript () {\n    var descriptor = Object.getOwnPropertyDescriptor(document, 'currentScript')\n    // for chrome\n    if (!descriptor && 'currentScript' in document && document.currentScript) {\n      return document.currentScript\n    }\n\n    // for other browsers with native support for currentScript\n    if (descriptor && descriptor.get !== getCurrentScript && document.currentScript) {\n      return document.currentScript\n    }\n  \n    // IE 8-10 support script readyState\n    // IE 11+ & Firefox support stack trace\n    try {\n      throw new Error();\n    }\n    catch (err) {\n      // Find the second match for the \"at\" string to get file src url from stack.\n      var ieStackRegExp = /.*at [^(]*\\((.*):(.+):(.+)\\)$/ig,\n        ffStackRegExp = /@([^@]*):(\\d+):(\\d+)\\s*$/ig,\n        stackDetails = ieStackRegExp.exec(err.stack) || ffStackRegExp.exec(err.stack),\n        scriptLocation = (stackDetails && stackDetails[1]) || false,\n        line = (stackDetails && stackDetails[2]) || false,\n        currentLocation = document.location.href.replace(document.location.hash, ''),\n        pageSource,\n        inlineScriptSourceRegExp,\n        inlineScriptSource,\n        scripts = document.getElementsByTagName('script'); // Live NodeList collection\n  \n      if (scriptLocation === currentLocation) {\n        pageSource = document.documentElement.outerHTML;\n        inlineScriptSourceRegExp = new RegExp('(?:[^\\\\n]+?\\\\n){0,' + (line - 2) + '}[^<]*<script>([\\\\d\\\\D]*?)<\\\\/script>[\\\\d\\\\D]*', 'i');\n        inlineScriptSource = pageSource.replace(inlineScriptSourceRegExp, '$1').trim();\n      }\n  \n      for (var i = 0; i < scripts.length; i++) {\n        // If ready state is interactive, return the script tag\n        if (scripts[i].readyState === 'interactive') {\n          return scripts[i];\n        }\n  \n        // If src matches, return the script tag\n        if (scripts[i].src === scriptLocation) {\n          return scripts[i];\n        }\n  \n        // If inline source matches, return the script tag\n        if (\n          scriptLocation === currentLocation &&\n          scripts[i].innerHTML &&\n          scripts[i].innerHTML.trim() === inlineScriptSource\n        ) {\n          return scripts[i];\n        }\n      }\n  \n      // If no match, return null\n      return null;\n    }\n  };\n\n  return getCurrentScript\n}));\n","/**\n * Date:2020/11/9\n * Desc:\n */\n/**\n * Date:2020/11/2\n * Desc: ptz cmd 封装\n * cmd[0] //首字节以05H开头\n * cmd[1] //组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n *        //  校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n * cmd[2] //地址的低8位？？？什么地址，地址范围000h ~ FFFh(0~4095),其中000h为广播地址\n * cmd[3] //指令码\n * cmd[4] //数据1,水平控制速度、聚焦速度\n * cmd[5] //数据2，垂直控制速度、光圈速度\n * cmd[6] // 高4位为数据3=变倍控制速度，低4位为地址高4位\n */\n\nconst PTZ_TYPE = {\n    stop: 'stop',\n    right: 'right',\n    left: 'left',\n    up: 'up',\n    down: 'down',\n    leftUp: 'leftUp',\n    leftDown: 'leftDown',\n    rightUp: 'rightUp',\n    rightDown: 'rightDown',\n    zoomFar: 'zoomFar',\n    zoomNear: 'zoomNear',\n    apertureFar: 'apertureFar',\n    apertureNear: 'apertureNear',\n    focusFar: 'focusFar',\n    focusNear: 'focusNear',\n    setPos: 'setPos',\n    calPos: 'calPos',\n    delPos: 'delPos'\n};\n\nconst PTZ_CMD_TYPE = {\n    stop: 0x00,\n\n    right: 0x01,\n    left: 0x02,\n    up: 0x08,\n    down: 0x04,\n\n    leftUp: 0x0A,\n    leftDown: 0x06,\n    rightUp: 0x09,\n    rightDown: 0x05,\n\n    zoomFar: 0x10, // 镜头 放大\n    zoomNear: 0x20,  // 镜头 缩小\n\n    apertureFar: 0x48, // 光圈 缩小\n    apertureNear: 0x44, // 光圈 放大\n\n    focusFar: 0x42, // 聚焦 近\n    focusNear: 0x41, // 聚焦 远\n\n    setPos: 0x81,\n    calPos: 0x82,\n    delPos: 0x83\n};\n\nconst SPEED_ARRAY = [0x19, 0x32, 0x4b, 0x64, 0x7d, 0x96, 0xAF, 0xC8, 0xE1, 0xFA];\nconst POSITION_ARRAY = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10];\n\n// 获取 direction 方向型\n/**\n *\n * @param options\n *        type:\n *        speed:default 5\n *        index:\n * @returns {string}\n */\nfunction getPTZCmd(options) {\n    const {type, speed, index} = options;\n    const ptzSpeed = getPTZSpeed(speed);\n    let indexValue3, indexValue4, indexValue5, indexValue6;\n    indexValue3 = PTZ_CMD_TYPE[type];\n    switch (type) {\n        case PTZ_TYPE.up:\n        case PTZ_TYPE.down:\n        case PTZ_TYPE.apertureFar:\n        case PTZ_TYPE.apertureNear:\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.right:\n        case PTZ_TYPE.left:\n        case PTZ_TYPE.focusFar:\n        case PTZ_TYPE.focusNear:\n            indexValue4 = ptzSpeed;\n            break;\n        case PTZ_TYPE.leftUp:\n        case PTZ_TYPE.leftDown:\n        case PTZ_TYPE.rightUp:\n        case PTZ_TYPE.rightDown:\n            indexValue4 = ptzSpeed;\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.zoomFar:\n        case PTZ_TYPE.zoomNear:\n            indexValue6 = 0x10;\n            break;\n        case PTZ_TYPE.calPos:\n        case PTZ_TYPE.delPos:\n        case PTZ_TYPE.setPos:\n            indexValue5 = getPTZPositionIndex(index);\n            break;\n        default:\n            break;\n    }\n    return ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6);\n}\n\nfunction getPTZSpeed(speed) {\n    speed = speed || 5;\n    const speedIndex = speed - 1;\n    const ptzSpeed = SPEED_ARRAY[speedIndex] || SPEED_ARRAY[4];\n    return ptzSpeed;\n}\n\nfunction getPTZPositionIndex(index) {\n    return POSITION_ARRAY[index - 1];\n}\n\nfunction ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6) {\n    //\n    let cmd = Buffer.alloc(8);\n    // 首字节以05H开头\n    cmd[0] = 0xA5;\n    // 组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n    cmd[1] = 0x0F;\n    // 校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n    cmd[2] = 0x01;\n    //\n    if (indexValue3) {\n        cmd[3] = indexValue3;\n    }\n    if (indexValue4) {\n        cmd[4] = indexValue4;\n    }\n    if (indexValue5) {\n        cmd[5] = indexValue5;\n    }\n    if (indexValue6) {\n        cmd[6] = indexValue6;\n    }\n\n    cmd[7] = (cmd[0] + cmd[1] + cmd[2] + cmd[3] + cmd[4] + cmd[5] + cmd[6]) % 256;\n\n    return bytes2HexString(cmd);\n}\n\nfunction bytes2HexString(byte) {\n    let hexs = \"\";\n    for (let i = 0; i < byte.length; i++) {\n        let hex = (byte[i]).toString(16);\n        if (hex.length === 1) {\n            hex = '0' + hex;\n        }\n        hexs += hex.toUpperCase();\n    }\n    return hexs;\n}\n\nexport {\n    getPTZCmd,\n    PTZ_TYPE\n}\n","export * from \"-!../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=style&index=0&id=59b6c9a0&scoped=true&lang=css&\"","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","export * from \"-!../../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Records.vue?vue&type=style&index=0&id=72d12ba2&scoped=true&lang=css&\"","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <http://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n *     incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n  ? global.TYPED_ARRAY_SUPPORT\n  : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n  try {\n    var arr = new Uint8Array(1)\n    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n    return arr.foo() === 42 && // typed array instances can be augmented\n        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n  } catch (e) {\n    return false\n  }\n}\n\nfunction kMaxLength () {\n  return Buffer.TYPED_ARRAY_SUPPORT\n    ? 0x7fffffff\n    : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n  if (kMaxLength() < length) {\n    throw new RangeError('Invalid typed array length')\n  }\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = new Uint8Array(length)\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    if (that === null) {\n      that = new Buffer(length)\n    }\n    that.length = length\n  }\n\n  return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n    return new Buffer(arg, encodingOrOffset, length)\n  }\n\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new Error(\n        'If encoding is specified then the first argument must be a string'\n      )\n    }\n    return allocUnsafe(this, arg)\n  }\n  return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n  arr.__proto__ = Buffer.prototype\n  return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n  if (typeof value === 'number') {\n    throw new TypeError('\"value\" argument must not be a number')\n  }\n\n  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n    return fromArrayBuffer(that, value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'string') {\n    return fromString(that, value, encodingOrOffset)\n  }\n\n  return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n  Buffer.prototype.__proto__ = Uint8Array.prototype\n  Buffer.__proto__ = Uint8Array\n  if (typeof Symbol !== 'undefined' && Symbol.species &&\n      Buffer[Symbol.species] === Buffer) {\n    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n    Object.defineProperty(Buffer, Symbol.species, {\n      value: null,\n      configurable: true\n    })\n  }\n}\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be a number')\n  } else if (size < 0) {\n    throw new RangeError('\"size\" argument must not be negative')\n  }\n}\n\nfunction alloc (that, size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(that, size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpretted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(that, size).fill(fill, encoding)\n      : createBuffer(that, size).fill(fill)\n  }\n  return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n  assertSize(size)\n  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) {\n    for (var i = 0; i < size; ++i) {\n      that[i] = 0\n    }\n  }\n  return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('\"encoding\" must be a valid string encoding')\n  }\n\n  var length = byteLength(string, encoding) | 0\n  that = createBuffer(that, length)\n\n  var actual = that.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    that = that.slice(0, actual)\n  }\n\n  return that\n}\n\nfunction fromArrayLike (that, array) {\n  var length = array.length < 0 ? 0 : checked(array.length) | 0\n  that = createBuffer(that, length)\n  for (var i = 0; i < length; i += 1) {\n    that[i] = array[i] & 255\n  }\n  return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n  array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\\'offset\\' is out of bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\\'length\\' is out of bounds')\n  }\n\n  if (byteOffset === undefined && length === undefined) {\n    array = new Uint8Array(array)\n  } else if (length === undefined) {\n    array = new Uint8Array(array, byteOffset)\n  } else {\n    array = new Uint8Array(array, byteOffset, length)\n  }\n\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = array\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    that = fromArrayLike(that, array)\n  }\n  return that\n}\n\nfunction fromObject (that, obj) {\n  if (Buffer.isBuffer(obj)) {\n    var len = checked(obj.length) | 0\n    that = createBuffer(that, len)\n\n    if (that.length === 0) {\n      return that\n    }\n\n    obj.copy(that, 0, 0, len)\n    return that\n  }\n\n  if (obj) {\n    if ((typeof ArrayBuffer !== 'undefined' &&\n        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n      if (typeof obj.length !== 'number' || isnan(obj.length)) {\n        return createBuffer(that, 0)\n      }\n      return fromArrayLike(that, obj)\n    }\n\n    if (obj.type === 'Buffer' && isArray(obj.data)) {\n      return fromArrayLike(that, obj.data)\n    }\n  }\n\n  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < kMaxLength()` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= kMaxLength()) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + kMaxLength().toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError('Arguments must be Buffers')\n  }\n\n  if (a === b) return 0\n\n  var x = a.length\n  var y = b.length\n\n  for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  var i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  var buffer = Buffer.allocUnsafe(length)\n  var pos = 0\n  for (i = 0; i < list.length; ++i) {\n    var buf = list[i]\n    if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    }\n    buf.copy(buffer, pos)\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    string = '' + string\n  }\n\n  var len = string.length\n  if (len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n      case undefined:\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) return utf8ToBytes(string).length // assume utf8\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  var loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  var i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  var len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (var i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  var len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (var i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  var len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (var i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  var length = this.length | 0\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  var str = ''\n  var max = exports.INSPECT_MAX_BYTES\n  if (this.length > 0) {\n    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n    if (this.length > max) str += ' ... '\n  }\n  return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError('Argument must be a Buffer')\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  var x = thisEnd - thisStart\n  var y = end - start\n  var len = Math.min(x, y)\n\n  var thisCopy = this.slice(thisStart, thisEnd)\n  var targetCopy = target.slice(start, end)\n\n  for (var i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset  // Coerce to Number.\n  if (isNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (Buffer.TYPED_ARRAY_SUPPORT &&\n        typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  var indexSize = 1\n  var arrLength = arr.length\n  var valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  var i\n  if (dir) {\n    var foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      var found = true\n      for (var j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  var remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  // must be an even number of digits\n  var strLen = string.length\n  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  for (var i = 0; i < length; ++i) {\n    var parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (isNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n  return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset | 0\n    if (isFinite(length)) {\n      length = length | 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  // legacy write(string, encoding, offset, length) - remove in v0.13\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  var remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n        return asciiWrite(this, string, offset, length)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Write(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  var res = []\n\n  var i = start\n  while (i < end) {\n    var firstByte = buf[i]\n    var codePoint = null\n    var bytesPerSequence = (firstByte > 0xEF) ? 4\n      : (firstByte > 0xDF) ? 3\n      : (firstByte > 0xBF) ? 2\n      : 1\n\n    if (i + bytesPerSequence <= end) {\n      var secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  var len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  var res = ''\n  var i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  var len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  var out = ''\n  for (var i = start; i < end; ++i) {\n    out += toHex(buf[i])\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  var bytes = buf.slice(start, end)\n  var res = ''\n  for (var i = 0; i < bytes.length; i += 2) {\n    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  var len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  var newBuf\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    newBuf = this.subarray(start, end)\n    newBuf.__proto__ = Buffer.prototype\n  } else {\n    var sliceLen = end - start\n    newBuf = new Buffer(sliceLen, undefined)\n    for (var i = 0; i < sliceLen; ++i) {\n      newBuf[i] = this[i + start]\n    }\n  }\n\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  var val = this[offset + --byteLength]\n  var mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var i = byteLength\n  var mul = 1\n  var val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var mul = 1\n  var i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n      (littleEndian ? i : 1 - i) * 8\n  }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffffffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n  }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset + 3] = (value >>> 24)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 1] = (value >>> 8)\n    this[offset] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = 0\n  var mul = 1\n  var sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  var sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 3] = (value >>> 24)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  var len = end - start\n  var i\n\n  if (this === target && start < targetStart && targetStart < end) {\n    // descending copy from end\n    for (i = len - 1; i >= 0; --i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n    // ascending copy from start\n    for (i = 0; i < len; ++i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, start + len),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (val.length === 1) {\n      var code = val.charCodeAt(0)\n      if (code < 256) {\n        val = code\n      }\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  var i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    var bytes = Buffer.isBuffer(val)\n      ? val\n      : utf8ToBytes(new Buffer(val, encoding).toString())\n    var len = bytes.length\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction stringtrim (str) {\n  if (str.trim) return str.trim()\n  return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n  if (n < 16) return '0' + n.toString(16)\n  return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  var codePoint\n  var length = string.length\n  var leadSurrogate = null\n  var bytes = []\n\n  for (var i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n     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341.333333 0 0 1 512 170.666667m0-42.666667a384 384 0 1 0 384 384A384 384 0 0 0 512 128z\"  /><path fill=\"#333333\" d=\"M298.666667 533.333333H170.666667a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM853.333333 533.333333h-128a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM512 320a21.333333 21.333333 0 0 1-21.333333-21.333333V170.666667a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333333zM512 874.666667a21.333333 21.333333 0 0 1-21.333333-21.333334v-128a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333334z\"  /></svg>\n      </div>\n      <div class=\"control5\">\n        <i-select v-model=\"ptzPositionIndex\" style=\"width: 100px\">\n          <Option v-for=\"n in 10\" :value=\"n\" :key=\"n\">预置点{{n}}</Option>\n        </i-select>\n        <i-button type=\"primary\" @click=\"ptzCmd(ptzType.setPos)\">设置</i-button>\n        <i-button type=\"success\" @click=\"ptzCmd(ptzType.calPos)\">调用</i-button>\n        <i-button type=\"error\" @click=\"ptzCmd(ptzType.delPos)\">删除</i-button>\n        速度：\n        <InputNumber :max=\"10\" :min=\"1\" v-model=\"ptzSpeed\"></InputNumber>\n      </div>\n    </div>\n    <div slot=\"footer\">\n      <mu-badge v-if=\"remoteSDP\">\n        <a slot=\"content\" :href=\"remoteSDPURL\" download=\"remoteSDP.txt\">remoteSDP</a>\n      </mu-badge>\n      <mu-badge v-if=\"localSDP\">\n        <a slot=\"content\" :href=\"localSDPURL\" download=\"localSDP.txt\">localSDP</a>\n      </mu-badge>\n    </div>\n  </Modal>\n</template>\n<script>\n  import {PTZ_TYPE} from \"../utils/ptz-cmd\";\n  const PTZ_DIRECTION_ARRAY = [PTZ_TYPE.up,PTZ_TYPE.right,PTZ_TYPE.down,PTZ_TYPE.left,PTZ_TYPE.leftUp,PTZ_TYPE.rightUp,PTZ_TYPE.leftDown,PTZ_TYPE.rightDown];\n  let pc = null;\nexport default {\n  data() {\n    return {\n      iceConnectionState: pc && pc.iceConnectionState,\n      stream: null,\n      localSDP: \"\",\n      remoteSDP: \"\",\n      remoteSDPURL: \"\",\n      localSDPURL: \"\",\n      streamPath: \"\",\n      ptzSpeed:5,\n      ptzPositionIndex:1,\n      ptzType:PTZ_TYPE,\n    };\n  },\n  props:{\n    PublicIP:String\n  },\n    methods: {\n        async play(streamPath) {\n            pc = new RTCPeerConnection();\n            pc.addTransceiver('video',{\n              direction:'recvonly'\n            })\n            this.streamPath = streamPath;\n            pc.onsignalingstatechange = e => {\n                //console.log(e);\n            };\n            pc.oniceconnectionstatechange = e => {\n                this.$toast.info(pc.iceConnectionState);\n                this.iceConnectionState = pc.iceConnectionState;\n            };\n            pc.onicecandidate = event => {\n                console.log(event)\n            };\n            pc.ontrack = event => {\n               // console.log(event);\n                if (event.track.kind == \"video\")\n                    this.stream = event.streams[0];\n            };\n            await pc.setLocalDescription(await pc.createOffer());\n            this.localSDP = pc.localDescription.sdp;\n            this.localSDPURL = URL.createObjectURL(\n                new Blob([this.localSDP], { type: \"text/plain\" })\n            );\n            const result = await this.ajax({\n                type: \"POST\",\n                processData: false,\n                data: JSON.stringify(pc.localDescription.toJSON()),\n                url: \"/webrtc/play?streamPath=\" + this.streamPath,\n                dataType: \"json\"\n            });\n            if (result.errmsg) {\n                this.$toast.error(result.errmsg);\n                return;\n            } else {\n                this.remoteSDP = result.sdp;\n                this.remoteSDPURL = URL.createObjectURL(new Blob([this.remoteSDP], { type: \"text/plain\" }));\n            }\n            await pc.setRemoteDescription(new RTCSessionDescription(result));\n        },\n        ptzCmdDirection(direction){\n          const type = PTZ_DIRECTION_ARRAY[direction-1];\n          this.ptzCmd(type);\n        },\n        startPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.right,true);\n        },\n        stopPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.stop);\n        },\n        ptzCmd(type,isCycling){\n          this.$emit('ptz',{type:type,speed:this.ptzSpeed,index:this.ptzPositionIndex,cycle:isCycling})\n        },\n        onClosePreview() {\n            pc.close();\n        }\n    }\n};\n</script>\n<style scoped>\n  .arrow1{\n    grid-column: 2;\n    grid-row: 1;\n  }\n  .arrow2{\n    transform: rotate(90deg);\n    grid-column: 3;\n    grid-row: 2;\n  }\n  .arrow3{\n    transform: rotate(180deg);\n    grid-column: 2;\n    grid-row: 3;\n  }\n  .arrow4{\n    transform: rotate(270deg);\n    grid-column: 1;\n    grid-row: 2;\n  }\n\n  .arrow5{\n    transform: rotate(-45deg);\n    grid-column: 1;\n    grid-row: 1;\n  }\n\n  .arrow6{\n    transform: rotate(45deg);\n    grid-column: 3;\n    grid-row: 1;\n  }\n\n  .arrow7{\n    transform: rotate(-135deg);\n    grid-column: 1;\n    grid-row: 3;\n  }\n\n  .arrow8{\n    transform: rotate(135deg);\n    grid-column: 3;\n    grid-row: 3;\n  }\n\n  .arrow9{\n    grid-column: 2;\n    grid-row: 2;\n  }\n\n.container {\n  position: relative;\n  height: 350px;\n}\n.control {\n  position: absolute;\n  top: 20px;\n  right: 0;\n  display: grid;\n  grid-template-columns: repeat(3, 33.33%);\n  grid-template-rows: repeat(3, 33.33%);\n  width: 192px;\n  height: 192px;\n}\n\n.control2{\n  top: 210px;\n}\n\n.control3{\n  top: 260px;\n}\n\n.control4{\n  top: 310px;\n}\n\n.control5{\n  top: 360px;\n}\n\n.control >* {\n  cursor: pointer;\n  fill: gray;\n  width: 50px;\n  height: 50px;\n}\n\n.control5 >*{\n  margin-right: 10px;\n}\n\n.control2 >*,.control3 >*,.control4 >*{\n  width: 40px;\n  height: 40px;\n}\n\n.control >*:hover,.cycling{\n  fill: cyan\n}\n\n\n\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"","/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nexport default function normalizeComponent (\n  scriptExports,\n  render,\n  staticRenderFns,\n  functionalTemplate,\n  injectStyles,\n  scopeId,\n  moduleIdentifier, /* server only */\n  shadowMode /* vue-cli only */\n) {\n  // Vue.extend constructor export interop\n  var options = typeof scriptExports === 'function'\n    ? scriptExports.options\n    : scriptExports\n\n  // render functions\n  if (render) {\n    options.render = render\n    options.staticRenderFns = staticRenderFns\n    options._compiled = true\n  }\n\n  // functional template\n  if (functionalTemplate) {\n    options.functional = true\n  }\n\n  // scopedId\n  if (scopeId) {\n    options._scopeId = 'data-v-' + scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = shadowMode\n      ? function () {\n        injectStyles.call(\n          this,\n          (options.functional ? this.parent : this).$root.$options.shadowRoot\n        )\n      }\n      : injectStyles\n  }\n\n  if (hook) {\n    if (options.functional) {\n      // for template-only hot-reload because in that case the render fn doesn't\n      // go through the normalizer\n      options._injectStyles = hook\n      // register for functional component in vue file\n      var originalRender = options.render\n      options.render = function renderWithStyleInjection (h, context) {\n        hook.call(context)\n        return originalRender(h, context)\n      }\n    } else {\n      // inject component registration as beforeCreate hook\n      var existing = options.beforeCreate\n      options.beforeCreate = existing\n        ? [].concat(existing, hook)\n        : [hook]\n    }\n  }\n\n  return {\n    exports: scriptExports,\n    options: options\n  }\n}\n","import { render, staticRenderFns } from \"./Player.vue?vue&type=template&id=76558468&scoped=true&\"\nimport script from \"./Player.vue?vue&type=script&lang=js&\"\nexport * from \"./Player.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player.vue?vue&type=style&index=0&id=76558468&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"76558468\",\n  null\n  \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:\"player-wrap\"},[(_vm.rtcStream)?[_c('video',{attrs:{\"autoplay\":\"\",\"muted\":\"\",\"controls\":\"\"},domProps:{\"srcObject\":_vm.rtcStream,\"muted\":true}})]:_vm._e()],2)}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","<template>\n    <div class=\"player-wrap\">\n        <template v-if=\"rtcStream\">\n            <video :srcObject.prop=\"rtcStream\" autoplay muted controls></video>\n        </template>\n    </div>\n</template>\n\n<script>\n    export default {\n        name: \"WebrtcPlayer\",\n        rtcPeerConnection: null,\n        data() {\n            return {\n                iceConnectionState: '',\n                rtcPeerConnectionInit: false,\n                rtcStream: null\n            }\n        },\n        props: {\n            streamPath: {\n                type: String,\n                default: ''\n            }\n        },\n        async created() {\n            await this.initRtcPeerConnection();\n            console.log('initRtcPeerConnectioned');\n            if (this.streamPath) {\n                await this.play(this.streamPath);\n                console.log('played');\n            }\n        },\n        methods: {\n            async initRtcPeerConnection() {\n                const rtcPeerConnection = new RTCPeerConnection();\n\n                rtcPeerConnection.addTransceiver('video', {\n                    direction: \"recvonly\"\n                });\n\n                rtcPeerConnection.onsignalingstatechange = e => {\n                    console.log('onsignalingstatechange', e);\n                };\n\n                rtcPeerConnection.oniceconnectionstatechange = e => {\n                    console.log('oniceconnectionstatechange', rtcPeerConnection.iceConnectionState);\n                };\n\n                rtcPeerConnection.onicecandidate = event => {\n                    console.log('onicecandidate', event);\n                };\n\n                rtcPeerConnection.ontrack = event => {\n                    console.log('ontrack', event);\n                    if (event.track.kind === \"video\") {\n                        this.rtcStream = event.streams[0];\n                    }\n                };\n\n                const rtcSessionDescriptionInit = await rtcPeerConnection.createOffer();\n                await rtcPeerConnection.setLocalDescription(rtcSessionDescriptionInit);\n                this.rtcPeerConnectionInit = true;\n                this.$options.rtcPeerConnection = rtcPeerConnection;\n            },\n\n            //\n            async play(streamPath) {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                const localDescriptionData = rtcPeerConnection.localDescription.toJSON();\n                const result = await this.ajax({\n                    type: \"POST\",\n                    processData: false,\n                    data: JSON.stringify(localDescriptionData),\n                    url: \"/webrtc/play?streamPath=\" + streamPath,\n                    dataType: \"json\"\n                });\n                if (result.errmsg) {\n                    console.error(result.errmsg);\n                    return;\n                }\n                //\n                rtcPeerConnection.setRemoteDescription(new RTCSessionDescription({\n                    type: result.type,\n                    sdp: result.sdp\n                }));\n            },\n            close() {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                rtcPeerConnection && rtcPeerConnection.close();\n            }\n        },\n        destroyed() {\n            this.close();\n        }\n    }\n</script>\n\n<style scoped>\n    .player-wrap {\n        width: 100%;\n        height: 100%;\n        border-radius: 4px;\n        box-shadow: 0 0 5px #40d3fc, inset 0 0 5px #40d3fc, 0 0 0 1px #40d3fc;\n    }\n\n    .player-wrap video {\n        width: 100%;\n        height: 100%;\n    }\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Player2.vue?vue&type=template&id=3d23233a&scoped=true&\"\nimport script from \"./Player2.vue?vue&type=script&lang=js&\"\nexport * from \"./Player2.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player2.vue?vue&type=style&index=0&id=3d23233a&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"3d23233a\",\n  null\n  \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('Modal',_vm._g(_vm._b({attrs:{\"draggable\":\"\",\"width\":\"900\",\"title\":\"Records\"},on:{\"on-ok\":_vm.onClosePreview,\"on-cancel\":_vm.onClosePreview}},'Modal',_vm.$attrs,false),_vm.$listeners),[_c('div',{staticClass:\"container\"},[_c('div',{staticClass:\"search\"},[_c('DatePicker',{staticStyle:{\"width\":\"200px\"},attrs:{\"type\":\"date\",\"options\":_vm.timeOptions,\"value\":_vm.search.time,\"placeholder\":\"请选择时间\",\"clearable\":false},on:{\"change\":_vm.handleTimeChange}})],1),_c('div',[_c('mu-data-table',{attrs:{\"columns\":_vm.columns,\"data\":_vm.recordList},scopedSlots:_vm._u([{key:\"expand\",fn:function(prop){return [_c('div',[_c('m-button',{on:{\"click\":function($event){return _vm.play(prop.row)}}},[_vm._v(\"播放\")])],1)]}},{key:\"default\",fn:function(scope){return [_c('td',[_vm._v(_vm._s(scope.row.DeviceID))]),_c('td',[_vm._v(_vm._s(scope.row.Name))]),_c('td',[_vm._v(_vm._s(scope.row.time))]),_c('td',[_vm._v(_vm._s(scope.row.length))]),_c('td',[_vm._v(_vm._s(scope.row.FilePath))]),_c('td',[_vm._v(_vm._s(scope.row.Address))]),_c('td',[_vm._v(_vm._s(scope.row.Type))])]}}])})],1)])])}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","/**\n * Date:2020/12/24\n * Desc:\n */\n\nexport function getOneTimeRange(time, options) {\n    let date;\n\n    // 都为空的时候\n    if (!time && !options) {\n        date = new Date();\n    } else if (Object.prototype.toString.call(time) !== '[object Date]' && time !== null && typeof time === 'object') {\n        // time 为 options 参数。\n        options = time;\n        date = new Date();\n    } else if (Object.prototype.toString.call(time) === '[object Date]') {\n        // time 是时间格式\n        date = time;\n    } else {\n        // time 是 int 格式。\n        if (('' + time).length === 10) time = parseInt(time) * 1000;\n        time = +time; // 转成int 型\n        date = new Date(time);\n    }\n\n    options = options || {};\n\n    let result = {\n        start: 0,\n        end: 0\n    };\n\n    let _startTime = new Date(date).setHours(options.startHour || 0, options.startMin || 0, 0, 0);\n    let _endTime = new Date(date).setHours(options.endHour || 23, options.endMin || 59, 59, 0);\n    result.start = new Date(_startTime).getTime();\n    result.end = new Date(_endTime).getTime();\n\n    return result;\n};\n\n\nexport function formatTimestamp(t) {\n    var d = 0,\n        h = 0,\n        m = 0,\n        s = 0;\n    if (t > 0) {\n        d = Math.floor(t / 1000 / 3600 / 24)\n        h = Math.floor(t / 1000 / 60 / 60 % 24)\n        m = Math.floor(t / 1000 / 60 % 60)\n        s = Math.floor(t / 1000 % 60)\n    }\n\n    return `${d}天${h}时${m}分${s}秒`\n}\n\nexport function formatTimeTips(timestamp) {\n    let result;\n\n    //\n    if (time > -1) {\n        let hour = Math.floor(timestamp / 3600);\n        let min = Math.floor(timestamp / 60) % 60;\n        let sec = timestamp % 60;\n\n        sec = Math.round(sec);\n\n        if (hour < 10) {\n            result = '0' + hour + \":\";\n        } else {\n            result = hour + \":\";\n        }\n\n        if (min < 10) {\n            result += \"0\";\n        }\n        result += min + \":\";\n        if (sec < 10) {\n            result += \"0\";\n        }\n        result += sec.toFixed(0);\n    }\n\n    return result;\n}\n\n\nexport function parseTime(time, cFormat) {\n    if (arguments.length === 0) {\n        return null\n    }\n    var format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'\n    var date;\n    if (typeof time === 'object') {\n        date = time\n    } else {\n        if (('' + time).length === 10) time = parseInt(time) * 1000;\n        time = +time; // 转成int 型\n        date = new Date(time)\n    }\n    var formatObj = {\n        y: date.getFullYear(),\n        m: date.getMonth() + 1,\n        d: date.getDate(),\n        h: date.getHours(),\n        i: date.getMinutes(),\n        s: date.getSeconds(),\n        a: date.getDay()\n    };\n    var time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {\n        var value = formatObj[key]\n        if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]\n        if (result.length > 0 && value < 10) {\n            value = '0' + value\n        }\n        return value || 0\n    });\n    return time_str\n}\n","<template>\n    <Modal v-bind=\"$attrs\"\n           draggable\n           width=\"900\"\n           v-on=\"$listeners\"\n           title=\"Records\"\n           @on-ok=\"onClosePreview\"\n           @on-cancel=\"onClosePreview\">\n        <div class=\"container\">\n            <div class=\"search\">\n                <DatePicker type=\"date\" :options=\"timeOptions\" :value=\"search.time\" placeholder=\"请选择时间\"\n                            style=\"width: 200px\" :clearable=\"false\"\n                            @change=\"handleTimeChange\"></DatePicker>\n            </div>\n            <div>\n                <mu-data-table :columns=\"columns\" :data=\"recordList\">\n                    <template #expand=\"prop\">\n                        <div>\n                            <m-button @click=\"play(prop.row)\">播放</m-button>\n                        </div>\n                    </template>\n                    <template #default=\"scope\">\n                        <td>{{scope.row.DeviceID}}</td>\n                        <td>{{scope.row.Name}}</td>\n                        <td>{{scope.row.time}}</td>\n                        <td>{{scope.row.length}}</td>\n                        <td>{{scope.row.FilePath}}</td>\n                        <td>{{scope.row.Address}}</td>\n                        <td>{{scope.row.Type}}</td>\n                    </template>\n                </mu-data-table>\n            </div>\n        </div>\n    </Modal>\n</template>\n\n<script>\n    import {getOneTimeRange, formatTimeTips, parseTime} from \"../utils\";\n\n    const _now = new Date();\n\n    export default {\n        name: \"Records\",\n        props: {\n            records: Array\n        },\n        data() {\n            return {\n                timeOptions: {\n                    disabledDate(date) {\n                        return date && date.valueOf() > Date.now();\n                    }\n                },\n                search: {\n                    id: null,\n                    channel: 0,\n                    deviceId: null,\n                    time: _now\n                },\n                columns: Object.freeze(\n                    [\n                        '设备ID',\n                        '名称',\n                        '时间',\n                        '时长',\n                        '文件路径',\n                        '地址',\n                        '类型'\n                    ].map((title) => ({\n                        title,\n                    }))\n                )\n            }\n        },\n        computed: {\n            startTime() {\n                if (!this.search.time) {\n                    return ''\n                }\n                const start = getOneTimeRange(this.search.time).start;\n                return new Date(start).toISOString();\n            },\n            endTime() {\n\n                if (!this.search.time) {\n                    return ''\n                }\n\n                const end = getOneTimeRange(this.search.time).end;\n                return new Date(end).toISOString();\n            },\n            recordList() {\n                const list = this.records.map((record) => {\n                    const startTime = new Date(record.StartTime).getTime();\n                    const endTime = new Date(record.EndTime).getTime();\n                    const timestamp = endTime - startTime;\n                    const timeLength = formatTimeTips(timestamp);\n\n                    const _startTime = parseTime(startTime);\n\n                    record.length = timeLength;\n                    record.time = _startTime;\n                    return record;\n                });\n                return list;\n            }\n        },\n\n        methods: {\n            getList(options) {\n                this.search.id = options.id;\n                this.search.channel = options.channel;\n                this.search.deviceId = options.deviceId;\n                this._fetchList();\n            },\n\n            _fetchList() {\n                if (this.search.id && this.search.channel && this.startTime && this.endTime) {\n                    const query = {\n                        id: this.search.id,\n                        channel: this.search.channel,\n                        startTime: this.search.startTime,\n                        endTime: this.search.endTime\n                    };\n\n                    this.ajax.get(\"/gb28181/query/records\", query).then((x) => {\n\n                    });\n                }\n            },\n            onClosePreview() {\n                this.$emit('close');\n            },\n            handleTimeChange(date) {\n                this.search.time = date;\n                this._fetchList();\n            },\n            play() {\n\n            }\n        }\n    }\n</script>\n\n<style scoped>\n\n    .container {\n        position: relative;\n        height: 500px;\n        background-image: radial-gradient(#c52dd07a, #4a17987a, #0300137a);\n        color: #ffffff;\n        background-color: black;\n        overflow: auto;\n    }\n\n    .search {\n        padding: 10px 0;\n    }\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Records.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Records.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Records.vue?vue&type=template&id=72d12ba2&scoped=true&\"\nimport script from \"./Records.vue?vue&type=script&lang=js&\"\nexport * from \"./Records.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Records.vue?vue&type=style&index=0&id=72d12ba2&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"72d12ba2\",\n  null\n  \n)\n\nexport default component.exports","<template>\n    <div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 0\">\n            <mu-data-table :data=\"Devices\" :columns=\"columns\">\n                <template #expand=\"prop\">\n                    <mu-data-table\n                            :data=\"prop.row.Channels\"\n                            :columns=\"columns2\"\n                    >\n                        <template #default=\"{ row: item, $index }\">\n                            <td>{{ item.DeviceID }}</td>\n                            <td>{{ item.Name }}</td>\n                            <td>{{ item.Manufacturer }}</td>\n                            <td>{{ item.Address }}</td>\n                            <td>{{ item.Status }}</td>\n                            <td>\n                                <mu-button\n                                        flat\n                                        v-if=\"item.Connected\"\n                                        @click=\"ptz(prop.row.ID, $index, item)\"\n                                >云台\n                                </mu-button>\n                                <mu-button\n                                        flat\n                                        v-if=\"item.Connected\"\n                                        @click=\"bye(prop.row.ID, $index)\"\n                                >断开\n                                </mu-button\n                                >\n                                <mu-button\n                                        v-else\n                                        flat\n                                        @click=\"invite(prop.row.ID, $index, item)\"\n                                >连接\n                                </mu-button>\n                                <mu-button @click=\"getRecords(prop.row.ID, $index,item)\">录像</mu-button>\n                            </td>\n                        </template>\n                    </mu-data-table>\n                </template>\n                <template #default=\"{ row: item }\">\n                    <td>{{ item.ID }}</td>\n                    <td>{{ item.Addr }}</td>\n                    <td>{{ item.Channels ? item.Channels.length : 0 }}</td>\n                    <td>\n                        <StartTime :value=\"item.RegisterTime\"></StartTime>\n                    </td>\n                    <td>\n                        <StartTime :value=\"item.UpdateTime\"></StartTime>\n                    </td>\n                    <td>{{ item.Status }}</td>\n                </template>\n            </mu-data-table>\n        </div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 1\">\n            <div class=\"flex-box\">\n                <template v-for=\"(channel,index) in channelShowList\">\n                    <div class=\"flex-item\" :key=\"index\" v-if=\"channel.DeviceID\">\n                        <webrtc-player2 :stream-path=\"'gb28181/'+channel.DeviceID\"></webrtc-player2>\n                    </div>\n                </template>\n            </div>\n            <template v-if=\"channelList.length > 0\">\n                <Page :total=\"channelList.length\" :page-size=\"pageInfo.onePageSize\"\n                      @on-change=\"handlePageChange\"></Page>\n            </template>\n        </div>\n        <webrtc-player\n                ref=\"player\"\n                @ptz=\"sendPtz\"\n                v-model=\"previewStreamPath\"\n                :PublicIP=\"PublicIP\"\n        ></webrtc-player>\n        <records ref=\"records\" v-model=\"recordModal\" :records=\"recordList\" @close=\"initRecordSearch\"></records>\n    </div>\n</template>\n<script>\n    import WebrtcPlayer from \"./components/Player\";\n    import WebrtcPlayer2 from \"./components/Player2\";\n    import Records from './components/Records';\n    import {getPTZCmd, PTZ_TYPE} from \"./utils/ptz-cmd\";\n    import {getOneTimeRange} from \"./utils\";\n\n\n    export default {\n        components: {\n            WebrtcPlayer,\n            WebrtcPlayer2,\n            Records\n        },\n        props: {\n            ListenAddr: String,\n        },\n        computed: {\n            PublicIP() {\n                return this.ListenAddr.split(\":\")[0];\n            },\n        },\n        data() {\n            return {\n                Devices: [],\n                previewStreamPath: false,\n                channelList: [],\n                channelShowList: [],\n                pageInfo: {\n                    onePageSize: 9,\n                    totalPage: 0,\n                    currentPage: 0\n                },\n                recordList: [],\n                recordModal: false,\n                recordSearch: {\n                    id: null,\n                    channel: 0,\n                    deviceId: null\n                },\n                context: {\n                    id: null,\n                    channel: 0,\n                    item: null,\n                },\n                columns: Object.freeze(\n                    [\n                        \"设备号\",\n                        \"地址\",\n                        \"通道数\",\n                        \"注册时间\",\n                        \"更新时间\",\n                        \"状态\",\n                    ].map((title) => ({\n                        title,\n                    }))\n                ),\n                columns2: Object.freeze([\n                    \"通道编号\",\n                    \"名称\",\n                    \"厂商\",\n                    \"地址\",\n                    \"状态\",\n                    \"操作\",\n                ]).map((title) => ({title})),\n            };\n        },\n        created() {\n            this.fetchlist();\n        },\n        mounted() {\n            this.$parent.titleTabs = [\"列表\", \"N路播放\"];\n        },\n        methods: {\n            fetchlist() {\n                const listES = new EventSource(this.apiHost + \"/gb28181/list\");\n                listES.onmessage = (evt) => {\n                    if (!evt.data) return;\n                    this.Devices = JSON.parse(evt.data) || [];\n                    this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));\n                    let channelList = [];\n                    let recordList = [];\n                    this.Devices.forEach((device) => {\n                        const channels = device.Channels || [];\n                        if (channels.length > 0) {\n                            channelList = channelList.concat(channels);\n                        }\n\n                        if (this.recordSearch.id && this.recordSearch.deviceId) {\n                            const channel = channels.filter((i) => {\n                                return i.DeviceID === this.recordSearch.deviceId && this.recordSearch.id === device.ID;\n                            });\n\n                            if (channel) {\n                                this.recordList = channel.Records || [];\n                            }\n                        }\n                    });\n                    if (channelList.length > 0) {\n                        this.channelList = channelList;\n                        this.updatePageInfo(channelList.length);\n                    }\n                };\n                this.$once(\"hook:destroyed\", () => listES.close());\n            },\n            ptz(id, channel, item) {\n                this.context = {\n                    id,\n                    channel,\n                    item,\n                };\n                this.previewStreamPath = true;\n                this.$nextTick(() =>\n                    this.$refs.player.play(\"gb28181/\" + item.DeviceID)\n                );\n            },\n            sendPtz(options) {\n                const ptzCmd = getPTZCmd(options);\n                const ptzCmdStop = getPTZCmd({type: PTZ_TYPE.stop});\n                this.ajax\n                    .get(\"/gb28181/control\", {\n                        id: this.context.id,\n                        channel: this.context.channel,\n                        ptzcmd: ptzCmd,\n                    })\n                    .then((x) => {\n                        if (\n                            options.type === PTZ_TYPE.stop ||\n                            options.cycle === true\n                        ) {\n                            return;\n                        }\n                        setTimeout(() => {\n                            this.ajax.get(\"/gb28181/control\", {\n                                id: this.context.id,\n                                channel: this.context.channel,\n                                ptzcmd: ptzCmdStop,\n                            });\n                        }, 500);\n                    });\n            },\n\n\n            sendQueryRecords(options) {\n\n            },\n\n            handlePageChange(page) {\n                let showList = [];\n                const onePageSize = this.pageInfo.onePageSize;\n                const firstIndex = page * onePageSize - onePageSize;\n                const lastIndex = page * onePageSize - 1;\n                showList = this.channelList.filter((item, index) => {\n                    return index >= firstIndex && index <= lastIndex;\n                });\n\n                this.channelShowList = showList;\n                if (showList.length > 0) {\n                    this.pageInfo.currentPage = page;\n                }\n            },\n            updatePageInfo(totalSize) {\n                const onePageSize = this.pageInfo.onePageSize;\n                let totalPage = totalSize / onePageSize;\n\n                if (totalSize % onePageSize > 0) {\n                    totalPage = totalPage + 1;\n                }\n                this.pageInfo.totalPage = totalPage;\n                if (this.pageInfo.currentPage === 0) {\n                    this.handlePageChange(1)\n                }\n            },\n            invite(id, channel, item) {\n                this.ajax.get(\"/gb28181/invite\", {id, channel}).then((x) => {\n                    item.Connected = true;\n                });\n            },\n            bye(id, channel, item) {\n                this.ajax.get(\"/gb28181/bye\", {id, channel}).then((x) => {\n                    item.Connected = false;\n                });\n            },\n\n            getRecords(id, channel, item) {\n                this.recordSearch.id = id;\n                this.recordSearch.channel = channel;\n                this.recordSearch.deviceId = item.DeviceID;\n                this.recordModal = true;\n                this.$nextTick(() =>\n                    this.$refs.records.getList(this.recordSearch)\n                );\n            },\n\n            initRecordSearch() {\n                this.recordModal = false;\n                this.recordSearch.id = null;\n                this.recordSearch.channel = null;\n                this.recordSearch.deviceId = null;\n                this.recordList = [];\n            }\n        },\n    };\n</script>\n<style scoped>\n    .flex-box {\n        display: flex;\n        flex-flow: row wrap;\n        align-content: flex-start;\n    }\n\n    .flex-item {\n        flex: 0 0 33.3333%;\n        height: 275px;\n        box-sizing: border-box;\n        padding: 10px;\n    }\n</style>\n","import mod from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./App.vue?vue&type=template&id=59b6c9a0&scoped=true&\"\nimport script from \"./App.vue?vue&type=script&lang=js&\"\nexport * from \"./App.vue?vue&type=script&lang=js&\"\nimport style0 from \"./App.vue?vue&type=style&index=0&id=59b6c9a0&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"59b6c9a0\",\n  null\n  \n)\n\nexport default component.exports","import './setPublicPath'\nimport mod from '~entry'\nexport default mod\nexport * from '~entry'\n","// extracted by mini-css-extract-plugin"],"sourceRoot":""}
\ No newline at end of file
diff --git a/ui/dist/plugin-gb28181.umd.min.js b/ui/dist/plugin-gb28181.umd.min.js
index 003f8a3..17e71fa 100644
--- a/ui/dist/plugin-gb28181.umd.min.js
+++ b/ui/dist/plugin-gb28181.umd.min.js
@@ -1,11 +1,11 @@
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diff --git a/ui/dist/plugin-gb28181.umd.min.js.map b/ui/dist/plugin-gb28181.umd.min.js.map
index 45dc8db..86b3930 100644
--- a/ui/dist/plugin-gb28181.umd.min.js.map
+++ b/ui/dist/plugin-gb28181.umd.min.js.map
@@ -1 +1 @@
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Length must be a multiple of 4')\n  }\n\n  // Trim off extra bytes after placeholder bytes are found\n  // See: https://github.com/beatgammit/base64-js/issues/42\n  var validLen = b64.indexOf('=')\n  if (validLen === -1) validLen = len\n\n  var placeHoldersLen = validLen === len\n    ? 0\n    : 4 - (validLen % 4)\n\n  return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n  var tmp\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n\n  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n  var curByte = 0\n\n  // if there are placeholders, only get up to the last complete 4 chars\n  var len = placeHoldersLen > 0\n    ? validLen - 4\n    : validLen\n\n  var i\n  for (i = 0; i < len; i += 4) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 18) |\n      (revLookup[b64.charCodeAt(i + 1)] << 12) |\n      (revLookup[b64.charCodeAt(i + 2)] << 6) |\n      revLookup[b64.charCodeAt(i + 3)]\n    arr[curByte++] = (tmp >> 16) & 0xFF\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 2) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 2) |\n      (revLookup[b64.charCodeAt(i + 1)] >> 4)\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 1) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 10) |\n      (revLookup[b64.charCodeAt(i + 1)] << 4) |\n      (revLookup[b64.charCodeAt(i + 2)] >> 2)\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  return arr\n}\n\nfunction tripletToBase64 (num) {\n  return lookup[num >> 18 & 0x3F] +\n    lookup[num >> 12 & 0x3F] +\n    lookup[num >> 6 & 0x3F] +\n    lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n  var tmp\n  var output = []\n  for (var i = start; i < end; i += 3) {\n    tmp =\n      ((uint8[i] << 16) & 0xFF0000) +\n      ((uint8[i + 1] << 8) & 0xFF00) +\n      (uint8[i + 2] & 0xFF)\n    output.push(tripletToBase64(tmp))\n  }\n  return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n  var tmp\n  var len = uint8.length\n  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n  var parts = []\n  var maxChunkLength = 16383 // must be multiple of 3\n\n  // go through the array every three bytes, we'll deal with trailing stuff later\n  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))\n  }\n\n  // pad the end with zeros, but make sure to not forget the extra bytes\n  if (extraBytes === 1) {\n    tmp = uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 2] +\n      lookup[(tmp << 4) & 0x3F] +\n      '=='\n    )\n  } else if (extraBytes === 2) {\n    tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 10] +\n      lookup[(tmp >> 4) & 0x3F] +\n      lookup[(tmp << 2) & 0x3F] +\n      '='\n    )\n  }\n\n  return parts.join('')\n}\n","// addapted from the document.currentScript polyfill by Adam Miller\n// MIT license\n// source: https://github.com/amiller-gh/currentScript-polyfill\n\n// added support for Firefox https://bugzilla.mozilla.org/show_bug.cgi?id=1620505\n\n(function (root, factory) {\n  if (typeof define === 'function' && define.amd) {\n    define([], factory);\n  } else if (typeof module === 'object' && module.exports) {\n    module.exports = factory();\n  } else {\n    root.getCurrentScript = factory();\n  }\n}(typeof self !== 'undefined' ? self : this, function () {\n  function getCurrentScript () {\n    var descriptor = Object.getOwnPropertyDescriptor(document, 'currentScript')\n    // for chrome\n    if (!descriptor && 'currentScript' in document && document.currentScript) {\n      return document.currentScript\n    }\n\n    // for other browsers with native support for currentScript\n    if (descriptor && descriptor.get !== getCurrentScript && document.currentScript) {\n      return document.currentScript\n    }\n  \n    // IE 8-10 support script readyState\n    // IE 11+ & Firefox support stack trace\n    try {\n      throw new Error();\n    }\n    catch (err) {\n      // Find the second match for the \"at\" string to get file src url from stack.\n      var ieStackRegExp = /.*at [^(]*\\((.*):(.+):(.+)\\)$/ig,\n        ffStackRegExp = /@([^@]*):(\\d+):(\\d+)\\s*$/ig,\n        stackDetails = ieStackRegExp.exec(err.stack) || ffStackRegExp.exec(err.stack),\n        scriptLocation = (stackDetails && stackDetails[1]) || false,\n        line = (stackDetails && stackDetails[2]) || false,\n        currentLocation = document.location.href.replace(document.location.hash, ''),\n        pageSource,\n        inlineScriptSourceRegExp,\n        inlineScriptSource,\n        scripts = document.getElementsByTagName('script'); // Live NodeList collection\n  \n      if (scriptLocation === currentLocation) {\n        pageSource = document.documentElement.outerHTML;\n        inlineScriptSourceRegExp = new RegExp('(?:[^\\\\n]+?\\\\n){0,' + (line - 2) + '}[^<]*<script>([\\\\d\\\\D]*?)<\\\\/script>[\\\\d\\\\D]*', 'i');\n        inlineScriptSource = pageSource.replace(inlineScriptSourceRegExp, '$1').trim();\n      }\n  \n      for (var i = 0; i < scripts.length; i++) {\n        // If ready state is interactive, return the script tag\n        if (scripts[i].readyState === 'interactive') {\n          return scripts[i];\n        }\n  \n        // If src matches, return the script tag\n        if (scripts[i].src === scriptLocation) {\n          return scripts[i];\n        }\n  \n        // If inline source matches, return the script tag\n        if (\n          scriptLocation === currentLocation &&\n          scripts[i].innerHTML &&\n          scripts[i].innerHTML.trim() === inlineScriptSource\n        ) {\n          return scripts[i];\n        }\n      }\n  \n      // If no match, return null\n      return null;\n    }\n  };\n\n  return getCurrentScript\n}));\n","/**\n * Date:2020/11/9\n * Desc:\n */\n/**\n * Date:2020/11/2\n * Desc: ptz cmd 封装\n * cmd[0] //首字节以05H开头\n * cmd[1] //组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n *        //  校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n * cmd[2] //地址的低8位？？？什么地址，地址范围000h ~ FFFh(0~4095),其中000h为广播地址\n * cmd[3] //指令码\n * cmd[4] //数据1,水平控制速度、聚焦速度\n * cmd[5] //数据2，垂直控制速度、光圈速度\n * cmd[6] // 高4位为数据3=变倍控制速度，低4位为地址高4位\n */\n\nconst PTZ_TYPE = {\n    stop: 'stop',\n    right: 'right',\n    left: 'left',\n    up: 'up',\n    down: 'down',\n    leftUp: 'leftUp',\n    leftDown: 'leftDown',\n    rightUp: 'rightUp',\n    rightDown: 'rightDown',\n    zoomFar: 'zoomFar',\n    zoomNear: 'zoomNear',\n    apertureFar: 'apertureFar',\n    apertureNear: 'apertureNear',\n    focusFar: 'focusFar',\n    focusNear: 'focusNear',\n    setPos: 'setPos',\n    calPos: 'calPos',\n    delPos: 'delPos'\n};\n\nconst PTZ_CMD_TYPE = {\n    stop: 0x00,\n\n    right: 0x01,\n    left: 0x02,\n    up: 0x08,\n    down: 0x04,\n\n    leftUp: 0x0A,\n    leftDown: 0x06,\n    rightUp: 0x09,\n    rightDown: 0x05,\n\n    zoomFar: 0x10, // 镜头 放大\n    zoomNear: 0x20,  // 镜头 缩小\n\n    apertureFar: 0x48, // 光圈 缩小\n    apertureNear: 0x44, // 光圈 放大\n\n    focusFar: 0x42, // 聚焦 近\n    focusNear: 0x41, // 聚焦 远\n\n    setPos: 0x81,\n    calPos: 0x82,\n    delPos: 0x83\n};\n\nconst SPEED_ARRAY = [0x19, 0x32, 0x4b, 0x64, 0x7d, 0x96, 0xAF, 0xC8, 0xE1, 0xFA];\nconst POSITION_ARRAY = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10];\n\n// 获取 direction 方向型\n/**\n *\n * @param options\n *        type:\n *        speed:default 5\n *        index:\n * @returns {string}\n */\nfunction getPTZCmd(options) {\n    const {type, speed, index} = options;\n    const ptzSpeed = getPTZSpeed(speed);\n    let indexValue3, indexValue4, indexValue5, indexValue6;\n    indexValue3 = PTZ_CMD_TYPE[type];\n    switch (type) {\n        case PTZ_TYPE.up:\n        case PTZ_TYPE.down:\n        case PTZ_TYPE.apertureFar:\n        case PTZ_TYPE.apertureNear:\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.right:\n        case PTZ_TYPE.left:\n        case PTZ_TYPE.focusFar:\n        case PTZ_TYPE.focusNear:\n            indexValue4 = ptzSpeed;\n            break;\n        case PTZ_TYPE.leftUp:\n        case PTZ_TYPE.leftDown:\n        case PTZ_TYPE.rightUp:\n        case PTZ_TYPE.rightDown:\n            indexValue4 = ptzSpeed;\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.zoomFar:\n        case PTZ_TYPE.zoomNear:\n            indexValue6 = 0x10;\n            break;\n        case PTZ_TYPE.calPos:\n        case PTZ_TYPE.delPos:\n        case PTZ_TYPE.setPos:\n            indexValue5 = getPTZPositionIndex(index);\n            break;\n        default:\n            break;\n    }\n    return ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6);\n}\n\nfunction getPTZSpeed(speed) {\n    speed = speed || 5;\n    const speedIndex = speed - 1;\n    const ptzSpeed = SPEED_ARRAY[speedIndex] || SPEED_ARRAY[4];\n    return ptzSpeed;\n}\n\nfunction getPTZPositionIndex(index) {\n    return POSITION_ARRAY[index - 1];\n}\n\nfunction ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6) {\n    //\n    let cmd = Buffer.alloc(8);\n    // 首字节以05H开头\n    cmd[0] = 0xA5;\n    // 组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n    cmd[1] = 0x0F;\n    // 校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n    cmd[2] = 0x01;\n    //\n    if (indexValue3) {\n        cmd[3] = indexValue3;\n    }\n    if (indexValue4) {\n        cmd[4] = indexValue4;\n    }\n    if (indexValue5) {\n        cmd[5] = indexValue5;\n    }\n    if (indexValue6) {\n        cmd[6] = indexValue6;\n    }\n\n    cmd[7] = (cmd[0] + cmd[1] + cmd[2] + cmd[3] + cmd[4] + cmd[5] + cmd[6]) % 256;\n\n    return bytes2HexString(cmd);\n}\n\nfunction bytes2HexString(byte) {\n    let hexs = \"\";\n    for (let i = 0; i < byte.length; i++) {\n        let hex = (byte[i]).toString(16);\n        if (hex.length === 1) {\n            hex = '0' + hex;\n        }\n        hexs += hex.toUpperCase();\n    }\n    return hexs;\n}\n\nexport {\n    getPTZCmd,\n    PTZ_TYPE\n}\n","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <http://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n *     incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n  ? global.TYPED_ARRAY_SUPPORT\n  : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n  try {\n    var arr = new Uint8Array(1)\n    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n    return arr.foo() === 42 && // typed array instances can be augmented\n        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n  } catch (e) {\n    return false\n  }\n}\n\nfunction kMaxLength () {\n  return Buffer.TYPED_ARRAY_SUPPORT\n    ? 0x7fffffff\n    : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n  if (kMaxLength() < length) {\n    throw new RangeError('Invalid typed array length')\n  }\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = new Uint8Array(length)\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    if (that === null) {\n      that = new Buffer(length)\n    }\n    that.length = length\n  }\n\n  return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n    return new Buffer(arg, encodingOrOffset, length)\n  }\n\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new Error(\n        'If encoding is specified then the first argument must be a string'\n      )\n    }\n    return allocUnsafe(this, arg)\n  }\n  return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n  arr.__proto__ = Buffer.prototype\n  return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n  if (typeof value === 'number') {\n    throw new TypeError('\"value\" argument must not be a number')\n  }\n\n  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n    return fromArrayBuffer(that, value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'string') {\n    return fromString(that, value, encodingOrOffset)\n  }\n\n  return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n  Buffer.prototype.__proto__ = Uint8Array.prototype\n  Buffer.__proto__ = Uint8Array\n  if (typeof Symbol !== 'undefined' && Symbol.species &&\n      Buffer[Symbol.species] === Buffer) {\n    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n    Object.defineProperty(Buffer, Symbol.species, {\n      value: null,\n      configurable: true\n    })\n  }\n}\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be a number')\n  } else if (size < 0) {\n    throw new RangeError('\"size\" argument must not be negative')\n  }\n}\n\nfunction alloc (that, size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(that, size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpretted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(that, size).fill(fill, encoding)\n      : createBuffer(that, size).fill(fill)\n  }\n  return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n  assertSize(size)\n  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) {\n    for (var i = 0; i < size; ++i) {\n      that[i] = 0\n    }\n  }\n  return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('\"encoding\" must be a valid string encoding')\n  }\n\n  var length = byteLength(string, encoding) | 0\n  that = createBuffer(that, length)\n\n  var actual = that.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    that = that.slice(0, actual)\n  }\n\n  return that\n}\n\nfunction fromArrayLike (that, array) {\n  var length = array.length < 0 ? 0 : checked(array.length) | 0\n  that = createBuffer(that, length)\n  for (var i = 0; i < length; i += 1) {\n    that[i] = array[i] & 255\n  }\n  return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n  array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\\'offset\\' is out of bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\\'length\\' is out of bounds')\n  }\n\n  if (byteOffset === undefined && length === undefined) {\n    array = new Uint8Array(array)\n  } else if (length === undefined) {\n    array = new Uint8Array(array, byteOffset)\n  } else {\n    array = new Uint8Array(array, byteOffset, length)\n  }\n\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = array\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    that = fromArrayLike(that, array)\n  }\n  return that\n}\n\nfunction fromObject (that, obj) {\n  if (Buffer.isBuffer(obj)) {\n    var len = checked(obj.length) | 0\n    that = createBuffer(that, len)\n\n    if (that.length === 0) {\n      return that\n    }\n\n    obj.copy(that, 0, 0, len)\n    return that\n  }\n\n  if (obj) {\n    if ((typeof ArrayBuffer !== 'undefined' &&\n        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n      if (typeof obj.length !== 'number' || isnan(obj.length)) {\n        return createBuffer(that, 0)\n      }\n      return fromArrayLike(that, obj)\n    }\n\n    if (obj.type === 'Buffer' && isArray(obj.data)) {\n      return fromArrayLike(that, obj.data)\n    }\n  }\n\n  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < kMaxLength()` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= kMaxLength()) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + kMaxLength().toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError('Arguments must be Buffers')\n  }\n\n  if (a === b) return 0\n\n  var x = a.length\n  var y = b.length\n\n  for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  var i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  var buffer = Buffer.allocUnsafe(length)\n  var pos = 0\n  for (i = 0; i < list.length; ++i) {\n    var buf = list[i]\n    if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    }\n    buf.copy(buffer, pos)\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    string = '' + string\n  }\n\n  var len = string.length\n  if (len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n      case undefined:\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) return utf8ToBytes(string).length // assume utf8\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  var loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  var i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  var len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (var i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  var len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (var i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  var len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (var i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  var length = this.length | 0\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  var str = ''\n  var max = exports.INSPECT_MAX_BYTES\n  if (this.length > 0) {\n    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n    if (this.length > max) str += ' ... '\n  }\n  return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError('Argument must be a Buffer')\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  var x = thisEnd - thisStart\n  var y = end - start\n  var len = Math.min(x, y)\n\n  var thisCopy = this.slice(thisStart, thisEnd)\n  var targetCopy = target.slice(start, end)\n\n  for (var i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset  // Coerce to Number.\n  if (isNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (Buffer.TYPED_ARRAY_SUPPORT &&\n        typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  var indexSize = 1\n  var arrLength = arr.length\n  var valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  var i\n  if (dir) {\n    var foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      var found = true\n      for (var j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  var remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  // must be an even number of digits\n  var strLen = string.length\n  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  for (var i = 0; i < length; ++i) {\n    var parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (isNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n  return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset | 0\n    if (isFinite(length)) {\n      length = length | 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  // legacy write(string, encoding, offset, length) - remove in v0.13\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  var remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n        return asciiWrite(this, string, offset, length)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Write(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  var res = []\n\n  var i = start\n  while (i < end) {\n    var firstByte = buf[i]\n    var codePoint = null\n    var bytesPerSequence = (firstByte > 0xEF) ? 4\n      : (firstByte > 0xDF) ? 3\n      : (firstByte > 0xBF) ? 2\n      : 1\n\n    if (i + bytesPerSequence <= end) {\n      var secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  var len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  var res = ''\n  var i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  var len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  var out = ''\n  for (var i = start; i < end; ++i) {\n    out += toHex(buf[i])\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  var bytes = buf.slice(start, end)\n  var res = ''\n  for (var i = 0; i < bytes.length; i += 2) {\n    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  var len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  var newBuf\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    newBuf = this.subarray(start, end)\n    newBuf.__proto__ = Buffer.prototype\n  } else {\n    var sliceLen = end - start\n    newBuf = new Buffer(sliceLen, undefined)\n    for (var i = 0; i < sliceLen; ++i) {\n      newBuf[i] = this[i + start]\n    }\n  }\n\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  var val = this[offset + --byteLength]\n  var mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var i = byteLength\n  var mul = 1\n  var val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var mul = 1\n  var i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n      (littleEndian ? i : 1 - i) * 8\n  }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffffffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n  }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset + 3] = (value >>> 24)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 1] = (value >>> 8)\n    this[offset] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = 0\n  var mul = 1\n  var sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  var sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 3] = (value >>> 24)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  var len = end - start\n  var i\n\n  if (this === target && start < targetStart && targetStart < end) {\n    // descending copy from end\n    for (i = len - 1; i >= 0; --i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n    // ascending copy from start\n    for (i = 0; i < len; ++i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, start + len),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (val.length === 1) {\n      var code = val.charCodeAt(0)\n      if (code < 256) {\n        val = code\n      }\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  var i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    var bytes = Buffer.isBuffer(val)\n      ? val\n      : utf8ToBytes(new Buffer(val, encoding).toString())\n    var len = bytes.length\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction stringtrim (str) {\n  if (str.trim) return str.trim()\n  return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n  if (n < 16) return '0' + n.toString(16)\n  return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  var codePoint\n  var length = string.length\n  var leadSurrogate = null\n  var bytes = []\n\n  for (var i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        } else if (i + 1 === length) {\n          // unpaired lead\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        }\n\n        // valid lead\n        leadSurrogate = codePoint\n\n        continue\n      }\n\n      // 2 leads in a row\n      if (codePoint < 0xDC00) {\n        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n        leadSurrogate = codePoint\n        continue\n      }\n\n      // valid surrogate pair\n      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n    } else if (leadSurrogate) {\n      // valid bmp char, but last char was a lead\n      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n    }\n\n    leadSurrogate = null\n\n    // encode utf8\n    if (codePoint < 0x80) {\n      if ((units -= 1) < 0) break\n      bytes.push(codePoint)\n    } else if (codePoint < 0x800) {\n      if ((units -= 2) < 0) break\n      bytes.push(\n        codePoint >> 0x6 | 0xC0,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x10000) {\n      if ((units -= 3) < 0) break\n      bytes.push(\n        codePoint >> 0xC | 0xE0,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x110000) {\n      if ((units -= 4) < 0) break\n      bytes.push(\n        codePoint >> 0x12 | 0xF0,\n        codePoint >> 0xC & 0x3F | 0x80,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else {\n      throw new Error('Invalid code point')\n    }\n  }\n\n  return bytes\n}\n\nfunction asciiToBytes (str) {\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    // Node's code seems to be doing this and not & 0x7F..\n    byteArray.push(str.charCodeAt(i) & 0xFF)\n  }\n  return byteArray\n}\n\nfunction utf16leToBytes (str, units) {\n  var c, hi, lo\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    if ((units -= 2) < 0) break\n\n    c = str.charCodeAt(i)\n    hi = c >> 8\n    lo = c % 256\n    byteArray.push(lo)\n    byteArray.push(hi)\n  }\n\n  return byteArray\n}\n\nfunction base64ToBytes (str) {\n  return base64.toByteArray(base64clean(str))\n}\n\nfunction blitBuffer (src, dst, offset, length) {\n  for (var i = 0; i < length; ++i) {\n    if ((i + offset >= dst.length) || (i >= src.length)) break\n    dst[i + offset] = src[i]\n  }\n  return i\n}\n\nfunction isnan (val) {\n  return val !== val // eslint-disable-line no-self-compare\n}\n","export * from \"-!../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=style&index=0&id=31458ad7&scoped=true&lang=css&\"","var g;\n\n// This works in non-strict mode\ng = (function() 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xmlns=\"http://www.w3.org/2000/svg\"><path d=\"M512 170.666667A341.333333 341.333333 0 1 1 170.666667 512 341.333333 341.333333 0 0 1 512 170.666667m0-42.666667a384 384 0 1 0 384 384A384 384 0 0 0 512 128z\"  /><path fill=\"#333333\" d=\"M298.666667 533.333333H170.666667a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM853.333333 533.333333h-128a21.333333 21.333333 0 0 1 0-42.666666h128a21.333333 21.333333 0 0 1 0 42.666666zM512 320a21.333333 21.333333 0 0 1-21.333333-21.333333V170.666667a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333333zM512 874.666667a21.333333 21.333333 0 0 1-21.333333-21.333334v-128a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333334z\"  /></svg>\n      </div>\n      <div class=\"control5\">\n        <i-select v-model=\"ptzPositionIndex\" style=\"width: 100px\">\n          <Option v-for=\"n in 10\" :value=\"n\" :key=\"n\">预置点{{n}}</Option>\n        </i-select>\n        <i-button type=\"primary\" @click=\"ptzCmd(ptzType.setPos)\">设置</i-button>\n        <i-button type=\"success\" @click=\"ptzCmd(ptzType.calPos)\">调用</i-button>\n        <i-button type=\"error\" @click=\"ptzCmd(ptzType.delPos)\">删除</i-button>\n        速度：\n        <InputNumber :max=\"10\" :min=\"1\" v-model=\"ptzSpeed\"></InputNumber>\n      </div>\n    </div>\n    <div slot=\"footer\">\n      <mu-badge v-if=\"remoteSDP\">\n        <a slot=\"content\" :href=\"remoteSDPURL\" download=\"remoteSDP.txt\">remoteSDP</a>\n      </mu-badge>\n      <mu-badge v-if=\"localSDP\">\n        <a slot=\"content\" :href=\"localSDPURL\" download=\"localSDP.txt\">localSDP</a>\n      </mu-badge>\n    </div>\n  </Modal>\n</template>\n<script>\n  import {PTZ_TYPE} from \"../utils/ptz-cmd\";\n  const PTZ_DIRECTION_ARRAY = [PTZ_TYPE.up,PTZ_TYPE.right,PTZ_TYPE.down,PTZ_TYPE.left,PTZ_TYPE.leftUp,PTZ_TYPE.rightUp,PTZ_TYPE.leftDown,PTZ_TYPE.rightDown];\n  let pc = null;\nexport default {\n  data() {\n    return {\n      iceConnectionState: pc && pc.iceConnectionState,\n      stream: null,\n      localSDP: \"\",\n      remoteSDP: \"\",\n      remoteSDPURL: \"\",\n      localSDPURL: \"\",\n      streamPath: \"\",\n      ptzSpeed:5,\n      ptzPositionIndex:1,\n      ptzType:PTZ_TYPE,\n    };\n  },\n  props:{\n    PublicIP:String\n  },\n    methods: {\n        async play(streamPath) {\n            pc = new RTCPeerConnection();\n            pc.addTransceiver('video',{\n              direction:'recvonly'\n            })\n            this.streamPath = streamPath;\n            pc.onsignalingstatechange = e => {\n                //console.log(e);\n            };\n            pc.oniceconnectionstatechange = e => {\n                this.$toast.info(pc.iceConnectionState);\n                this.iceConnectionState = pc.iceConnectionState;\n            };\n            pc.onicecandidate = event => {\n                console.log(event)\n            };\n            pc.ontrack = event => {\n               // console.log(event);\n                if (event.track.kind == \"video\")\n                    this.stream = event.streams[0];\n            };\n            await pc.setLocalDescription(await pc.createOffer());\n            this.localSDP = pc.localDescription.sdp;\n            this.localSDPURL = URL.createObjectURL(\n                new Blob([this.localSDP], { type: \"text/plain\" })\n            );\n            const result = await this.ajax({\n                type: \"POST\",\n                processData: false,\n                data: JSON.stringify(pc.localDescription.toJSON()),\n                url: \"/webrtc/play?streamPath=\" + this.streamPath,\n                dataType: \"json\"\n            });\n            if (result.errmsg) {\n                this.$toast.error(result.errmsg);\n                return;\n            } else {\n                this.remoteSDP = result.sdp;\n                this.remoteSDPURL = URL.createObjectURL(new Blob([this.remoteSDP], { type: \"text/plain\" }));\n            }\n            await pc.setRemoteDescription(new RTCSessionDescription(result));\n        },\n        ptzCmdDirection(direction){\n          const type = PTZ_DIRECTION_ARRAY[direction-1];\n          this.ptzCmd(type);\n        },\n        startPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.right,true);\n        },\n        stopPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.stop);\n        },\n        ptzCmd(type,isCycling){\n          this.$emit('ptz',{type:type,speed:this.ptzSpeed,index:this.ptzPositionIndex,cycle:isCycling})\n        },\n        onClosePreview() {\n            pc.close();\n        }\n    }\n};\n</script>\n<style scoped>\n  .arrow1{\n    grid-column: 2;\n    grid-row: 1;\n  }\n  .arrow2{\n    transform: rotate(90deg);\n    grid-column: 3;\n    grid-row: 2;\n  }\n  .arrow3{\n    transform: rotate(180deg);\n    grid-column: 2;\n    grid-row: 3;\n  }\n  .arrow4{\n    transform: rotate(270deg);\n    grid-column: 1;\n    grid-row: 2;\n  }\n\n  .arrow5{\n    transform: rotate(-45deg);\n    grid-column: 1;\n    grid-row: 1;\n  }\n\n  .arrow6{\n    transform: rotate(45deg);\n    grid-column: 3;\n    grid-row: 1;\n  }\n\n  .arrow7{\n    transform: rotate(-135deg);\n    grid-column: 1;\n    grid-row: 3;\n  }\n\n  .arrow8{\n    transform: rotate(135deg);\n    grid-column: 3;\n    grid-row: 3;\n  }\n\n  .arrow9{\n    grid-column: 2;\n    grid-row: 2;\n  }\n\n.container {\n  position: relative;\n  height: 350px;\n}\n.control {\n  position: absolute;\n  top: 20px;\n  right: 0;\n  display: grid;\n  grid-template-columns: repeat(3, 33.33%);\n  grid-template-rows: repeat(3, 33.33%);\n  width: 192px;\n  height: 192px;\n}\n\n.control2{\n  top: 210px;\n}\n\n.control3{\n  top: 260px;\n}\n\n.control4{\n  top: 310px;\n}\n\n.control5{\n  top: 360px;\n}\n\n.control >* {\n  cursor: pointer;\n  fill: gray;\n  width: 50px;\n  height: 50px;\n}\n\n.control5 >*{\n  margin-right: 10px;\n}\n\n.control2 >*,.control3 >*,.control4 >*{\n  width: 40px;\n  height: 40px;\n}\n\n.control >*:hover,.cycling{\n  fill: cyan\n}\n\n\n\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"","/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nexport default function normalizeComponent (\n  scriptExports,\n  render,\n  staticRenderFns,\n  functionalTemplate,\n  injectStyles,\n  scopeId,\n  moduleIdentifier, /* server only */\n  shadowMode /* vue-cli only */\n) {\n  // Vue.extend constructor export interop\n  var options = typeof scriptExports === 'function'\n    ? scriptExports.options\n    : scriptExports\n\n  // render functions\n  if (render) {\n    options.render = render\n    options.staticRenderFns = staticRenderFns\n    options._compiled = true\n  }\n\n  // functional template\n  if (functionalTemplate) {\n    options.functional = true\n  }\n\n  // scopedId\n  if (scopeId) {\n    options._scopeId = 'data-v-' + scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = shadowMode\n      ? function () {\n        injectStyles.call(\n          this,\n          (options.functional ? this.parent : this).$root.$options.shadowRoot\n        )\n      }\n      : injectStyles\n  }\n\n  if (hook) {\n    if (options.functional) {\n      // for template-only hot-reload because in that case the render fn doesn't\n      // go through the normalizer\n      options._injectStyles = hook\n      // register for functional component in vue file\n      var originalRender = options.render\n      options.render = function renderWithStyleInjection (h, context) {\n        hook.call(context)\n        return originalRender(h, context)\n      }\n    } else {\n      // inject component registration as beforeCreate hook\n      var existing = options.beforeCreate\n      options.beforeCreate = existing\n        ? [].concat(existing, hook)\n        : [hook]\n    }\n  }\n\n  return {\n    exports: scriptExports,\n    options: options\n  }\n}\n","import { render, staticRenderFns } from \"./Player.vue?vue&type=template&id=76558468&scoped=true&\"\nimport script from \"./Player.vue?vue&type=script&lang=js&\"\nexport * from \"./Player.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player.vue?vue&type=style&index=0&id=76558468&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"76558468\",\n  null\n  \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:\"player-wrap\"},[(_vm.rtcStream)?[_c('video',{attrs:{\"autoplay\":\"\",\"muted\":\"\",\"controls\":\"\"},domProps:{\"srcObject\":_vm.rtcStream,\"muted\":true}})]:_vm._e()],2)}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","<template>\n    <div class=\"player-wrap\">\n        <template v-if=\"rtcStream\">\n            <video :srcObject.prop=\"rtcStream\" autoplay muted controls></video>\n        </template>\n    </div>\n</template>\n\n<script>\n    export default {\n        name: \"WebrtcPlayer\",\n        rtcPeerConnection: null,\n        data() {\n            return {\n                iceConnectionState: '',\n                rtcPeerConnectionInit: false,\n                rtcStream: null\n            }\n        },\n        props: {\n            streamPath: {\n                type: String,\n                default: ''\n            }\n        },\n        async created() {\n            await this.initRtcPeerConnection();\n            console.log('initRtcPeerConnectioned');\n            if (this.streamPath) {\n                await this.play(this.streamPath);\n                console.log('played');\n            }\n        },\n        methods: {\n            async initRtcPeerConnection() {\n                const rtcPeerConnection = new RTCPeerConnection();\n\n                rtcPeerConnection.addTransceiver('video', {\n                    direction: \"recvonly\"\n                });\n\n                rtcPeerConnection.onsignalingstatechange = e => {\n                    console.log('onsignalingstatechange', e);\n                };\n\n                rtcPeerConnection.oniceconnectionstatechange = e => {\n                    console.log('oniceconnectionstatechange', rtcPeerConnection.iceConnectionState);\n                };\n\n                rtcPeerConnection.onicecandidate = event => {\n                    console.log('onicecandidate', event);\n                };\n\n                rtcPeerConnection.ontrack = event => {\n                    console.log('ontrack', event);\n                    if (event.track.kind === \"video\") {\n                        this.rtcStream = event.streams[0];\n                    }\n                };\n\n                const rtcSessionDescriptionInit = await rtcPeerConnection.createOffer();\n                await rtcPeerConnection.setLocalDescription(rtcSessionDescriptionInit);\n                this.rtcPeerConnectionInit = true;\n                this.$options.rtcPeerConnection = rtcPeerConnection;\n            },\n\n            //\n            async play(streamPath) {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                const localDescriptionData = rtcPeerConnection.localDescription.toJSON();\n                const result = await this.ajax({\n                    type: \"POST\",\n                    processData: false,\n                    data: JSON.stringify(localDescriptionData),\n                    url: \"/webrtc/play?streamPath=\" + streamPath,\n                    dataType: \"json\"\n                });\n                if (result.errmsg) {\n                    console.error(result.errmsg);\n                    return;\n                }\n                //\n                rtcPeerConnection.setRemoteDescription(new RTCSessionDescription({\n                    type: result.type,\n                    sdp: result.sdp\n                }));\n            },\n            close() {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                rtcPeerConnection && rtcPeerConnection.close();\n            }\n        },\n        destroyed() {\n            this.close();\n        }\n    }\n</script>\n\n<style scoped>\n    .player-wrap {\n        width: 100%;\n        height: 100%;\n        border-radius: 4px;\n        box-shadow: 0 0 5px #40d3fc, inset 0 0 5px #40d3fc, 0 0 0 1px #40d3fc;\n    }\n\n    .player-wrap video {\n        width: 100%;\n        height: 100%;\n    }\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Player2.vue?vue&type=template&id=3d23233a&scoped=true&\"\nimport script from \"./Player2.vue?vue&type=script&lang=js&\"\nexport * from \"./Player2.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player2.vue?vue&type=style&index=0&id=3d23233a&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"3d23233a\",\n  null\n  \n)\n\nexport default component.exports","<template>\n    <div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 0\">\n            <mu-data-table :data=\"Devices\" :columns=\"columns\">\n                <template #expand=\"prop\">\n                    <mu-data-table\n                        :data=\"prop.row.Channels\"\n                        :columns=\"columns2\"\n                    >\n                        <template #default=\"{ row: item, $index }\">\n                            <td>{{ item.DeviceID }}</td>\n                            <td>{{ item.Name }}</td>\n                            <td>{{ item.Manufacturer }}</td>\n                            <td>{{ item.Address }}</td>\n                            <td>{{ item.Status }}</td>\n                            <td>\n                                <mu-button\n                                    flat\n                                    v-if=\"item.Connected\"\n                                    @click=\"ptz(prop.row.ID, $index, item)\"\n                                    >云台\n                                </mu-button>\n                                <mu-button\n                                    flat\n                                    v-if=\"item.Connected\"\n                                    @click=\"bye(prop.row.ID, $index)\"\n                                    >断开</mu-button\n                                >\n                                <mu-button\n                                    v-else\n                                    flat\n                                    @click=\"invite(prop.row.ID, $index, item)\"\n                                    >连接\n                                </mu-button>\n                            </td>\n                        </template>\n                    </mu-data-table>\n                </template>\n                <template #default=\"{ row: item }\">\n                    <td>{{ item.ID }}</td>\n                    <td>{{ item.Addr }}</td>\n                    <td>{{ item.Channels ? item.Channels.length : 0 }}</td>\n                    <td>\n                        <StartTime :value=\"item.RegisterTime\"></StartTime>\n                    </td>\n                    <td>\n                        <StartTime :value=\"item.UpdateTime\"></StartTime>\n                    </td>\n                    <td>{{ item.Status }}</td>\n                </template>\n            </mu-data-table>\n        </div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 1\">\n            <div class=\"flex-box\">\n                <template v-for=\"(channel,index) in channelShowList\">\n                    <div class=\"flex-item\" :key=\"index\" v-if=\"channel.DeviceID\">\n                        <webrtc-player2 :stream-path=\"'gb28181/'+channel.DeviceID\"></webrtc-player2>\n                    </div>\n                </template>\n            </div>\n            <template v-if=\"channelList.length > 0\">\n                <Page :total=\"channelList.length\" :page-size=\"pageInfo.onePageSize\" @on-change=\"handlePageChange\"></Page>\n            </template>\n        </div>\n        <webrtc-player\n            ref=\"player\"\n            @ptz=\"sendPtz\"\n            v-model=\"previewStreamPath\"\n            :PublicIP=\"PublicIP\"\n        ></webrtc-player>\n    </div>\n</template>\n<script>\nimport WebrtcPlayer from \"./components/Player\";\nimport WebrtcPlayer2 from \"./components/Player2\";\nimport { getPTZCmd, PTZ_TYPE } from \"./utils/ptz-cmd\";\n\nexport default {\n    components: {\n        WebrtcPlayer,\n        WebrtcPlayer2,\n    },\n    props: {\n        ListenAddr: String,\n    },\n    computed: {\n        PublicIP() {\n            return this.ListenAddr.split(\":\")[0];\n        },\n    },\n    data() {\n        return {\n            Devices: [],\n            previewStreamPath: false,\n            channelList: [],\n            channelShowList: [],\n            pageInfo: {\n                onePageSize: 9,\n                totalPage: 0,\n                currentPage: 0\n            },\n            context: {\n                id: null,\n                channel: 0,\n                item: null,\n            },\n            columns: Object.freeze(\n                [\n                    \"设备号\",\n                    \"地址\",\n                    \"通道数\",\n                    \"注册时间\",\n                    \"更新时间\",\n                    \"状态\",\n                ].map((title) => ({\n                    title,\n                }))\n            ),\n            columns2: Object.freeze([\n                \"通道编号\",\n                \"名称\",\n                \"厂商\",\n                \"地址\",\n                \"状态\",\n                \"操作\",\n            ]).map((title) => ({ title })),\n        };\n    },\n    created() {\n        this.fetchlist();\n    },\n    mounted() {\n        this.$parent.titleTabs = [\"列表\", \"N路播放\"];\n    },\n    methods: {\n        fetchlist() {\n            const listES = new EventSource(this.apiHost + \"/gb28181/list\");\n            listES.onmessage = (evt) => {\n                if (!evt.data) return;\n                this.Devices = JSON.parse(evt.data) || [];\n                this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));\n                let channelList = [];\n                this.Devices.forEach((device) => {\n                    const channels = device.Channels || [];\n                    if (channels.length > 0) {\n                        channelList = channelList.concat(channels);\n                    }\n                });\n                if (channelList.length > 0) {\n                    this.channelList = channelList;\n                    this.updatePageInfo(channelList.length);\n                }\n            };\n            this.$once(\"hook:destroyed\", () => listES.close());\n        },\n        ptz(id, channel, item) {\n            this.context = {\n                id,\n                channel,\n                item,\n            };\n            this.previewStreamPath = true;\n            this.$nextTick(() =>\n                this.$refs.player.play(\"gb28181/\" + item.DeviceID)\n            );\n        },\n        sendPtz(options) {\n            const ptzCmd = getPTZCmd(options);\n            const ptzCmdStop = getPTZCmd({ type: PTZ_TYPE.stop });\n            this.ajax\n                .get(\"/gb28181/control\", {\n                    id: this.context.id,\n                    channel: this.context.channel,\n                    ptzcmd: ptzCmd,\n                })\n                .then((x) => {\n                    if (\n                        options.type === PTZ_TYPE.stop ||\n                        options.cycle === true\n                    ) {\n                        return;\n                    }\n                    setTimeout(() => {\n                        this.ajax.get(\"/gb28181/control\", {\n                            id: this.context.id,\n                            channel: this.context.channel,\n                            ptzcmd: ptzCmdStop,\n                        });\n                    }, 500);\n                });\n        },\n\n        handlePageChange(page){\n            let showList = [];\n            const onePageSize = this.pageInfo.onePageSize;\n            const firstIndex = page * onePageSize - onePageSize;\n            const lastIndex = page * onePageSize - 1 ;\n            showList = this.channelList.filter((item, index) => {\n                return index >= firstIndex && index <= lastIndex;\n            });\n\n            this.channelShowList = showList;\n            if(showList.length > 0){\n                this.pageInfo.currentPage = page;\n            }\n        },\n        updatePageInfo(totalSize){\n            const onePageSize = this.pageInfo.onePageSize;\n            let totalPage = totalSize / onePageSize;\n\n            if (totalSize % onePageSize > 0) {\n                totalPage = totalPage + 1;\n            }\n            this.pageInfo.totalPage = totalPage;\n            if(this.pageInfo.currentPage === 0){\n                this.handlePageChange(1)\n            }\n        },\n        invite(id, channel, item) {\n            this.ajax.get(\"/gb28181/invite\", { id, channel }).then((x) => {\n                item.Connected = true;\n            });\n        },\n        bye(id, channel, item) {\n            this.ajax.get(\"/gb28181/bye\", { id, channel }).then((x) => {\n                item.Connected = false;\n            });\n        },\n    },\n};\n</script>\n<style scoped>\n.flex-box {\n    display: flex;\n    flex-flow: row wrap;\n    align-content: flex-start;\n}\n\n.flex-item {\n    flex: 0 0 33.3333%;\n    height: 275px;\n    box-sizing: border-box;\n    padding: 10px;\n}\n</style>\n","import mod from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./App.vue?vue&type=template&id=31458ad7&scoped=true&\"\nimport script from \"./App.vue?vue&type=script&lang=js&\"\nexport * from \"./App.vue?vue&type=script&lang=js&\"\nimport style0 from \"./App.vue?vue&type=style&index=0&id=31458ad7&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"31458ad7\",\n  null\n  \n)\n\nexport default component.exports","import './setPublicPath'\nimport mod from '~entry'\nexport default mod\nexport * from '~entry'\n"],"sourceRoot":""}
\ No newline at end of file
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module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = \"fb15\");\n","export * from \"-!../../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=style&index=0&id=76558468&scoped=true&lang=css&\"","'use strict'\n\nexports.byteLength = byteLength\nexports.toByteArray = toByteArray\nexports.fromByteArray = fromByteArray\n\nvar lookup = []\nvar revLookup = []\nvar Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array\n\nvar code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'\nfor (var i = 0, len = code.length; i < len; ++i) {\n  lookup[i] = code[i]\n  revLookup[code.charCodeAt(i)] = i\n}\n\n// Support decoding URL-safe base64 strings, as Node.js does.\n// See: https://en.wikipedia.org/wiki/Base64#URL_applications\nrevLookup['-'.charCodeAt(0)] = 62\nrevLookup['_'.charCodeAt(0)] = 63\n\nfunction getLens (b64) {\n  var len = b64.length\n\n  if (len % 4 > 0) {\n    throw new Error('Invalid string. Length must be a multiple of 4')\n  }\n\n  // Trim off extra bytes after placeholder bytes are found\n  // See: https://github.com/beatgammit/base64-js/issues/42\n  var validLen = b64.indexOf('=')\n  if (validLen === -1) validLen = len\n\n  var placeHoldersLen = validLen === len\n    ? 0\n    : 4 - (validLen % 4)\n\n  return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n  var tmp\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n\n  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n  var curByte = 0\n\n  // if there are placeholders, only get up to the last complete 4 chars\n  var len = placeHoldersLen > 0\n    ? validLen - 4\n    : validLen\n\n  var i\n  for (i = 0; i < len; i += 4) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 18) |\n      (revLookup[b64.charCodeAt(i + 1)] << 12) |\n      (revLookup[b64.charCodeAt(i + 2)] << 6) |\n      revLookup[b64.charCodeAt(i + 3)]\n    arr[curByte++] = (tmp >> 16) & 0xFF\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 2) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 2) |\n      (revLookup[b64.charCodeAt(i + 1)] >> 4)\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 1) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 10) |\n      (revLookup[b64.charCodeAt(i + 1)] << 4) |\n      (revLookup[b64.charCodeAt(i + 2)] >> 2)\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  return arr\n}\n\nfunction tripletToBase64 (num) {\n  return lookup[num >> 18 & 0x3F] +\n    lookup[num >> 12 & 0x3F] +\n    lookup[num >> 6 & 0x3F] +\n    lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n  var tmp\n  var output = []\n  for (var i = start; i < end; i += 3) {\n    tmp =\n      ((uint8[i] << 16) & 0xFF0000) +\n      ((uint8[i + 1] << 8) & 0xFF00) +\n      (uint8[i + 2] & 0xFF)\n    output.push(tripletToBase64(tmp))\n  }\n  return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n  var tmp\n  var len = uint8.length\n  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n  var parts = []\n  var maxChunkLength = 16383 // must be multiple of 3\n\n  // go through the array every three bytes, we'll deal with trailing stuff later\n  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n    parts.push(encodeChunk(\n      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)\n    ))\n  }\n\n  // pad the end with zeros, but make sure to not forget the extra bytes\n  if (extraBytes === 1) {\n    tmp = uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 2] +\n      lookup[(tmp << 4) & 0x3F] +\n      '=='\n    )\n  } else if (extraBytes === 2) {\n    tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 10] +\n      lookup[(tmp >> 4) & 0x3F] +\n      lookup[(tmp << 2) & 0x3F] +\n      '='\n    )\n  }\n\n  return parts.join('')\n}\n","// addapted from the document.currentScript polyfill by Adam Miller\n// MIT license\n// source: https://github.com/amiller-gh/currentScript-polyfill\n\n// added support for Firefox https://bugzilla.mozilla.org/show_bug.cgi?id=1620505\n\n(function (root, factory) {\n  if (typeof define === 'function' && define.amd) {\n    define([], factory);\n  } else if (typeof module === 'object' && module.exports) {\n    module.exports = factory();\n  } else {\n    root.getCurrentScript = factory();\n  }\n}(typeof self !== 'undefined' ? self : this, function () {\n  function getCurrentScript () {\n    var descriptor = Object.getOwnPropertyDescriptor(document, 'currentScript')\n    // for chrome\n    if (!descriptor && 'currentScript' in document && document.currentScript) {\n      return document.currentScript\n    }\n\n    // for other browsers with native support for currentScript\n    if (descriptor && descriptor.get !== getCurrentScript && document.currentScript) {\n      return document.currentScript\n    }\n  \n    // IE 8-10 support script readyState\n    // IE 11+ & Firefox support stack trace\n    try {\n      throw new Error();\n    }\n    catch (err) {\n      // Find the second match for the \"at\" string to get file src url from stack.\n      var ieStackRegExp = /.*at [^(]*\\((.*):(.+):(.+)\\)$/ig,\n        ffStackRegExp = /@([^@]*):(\\d+):(\\d+)\\s*$/ig,\n        stackDetails = ieStackRegExp.exec(err.stack) || ffStackRegExp.exec(err.stack),\n        scriptLocation = (stackDetails && stackDetails[1]) || false,\n        line = (stackDetails && stackDetails[2]) || false,\n        currentLocation = document.location.href.replace(document.location.hash, ''),\n        pageSource,\n        inlineScriptSourceRegExp,\n        inlineScriptSource,\n        scripts = document.getElementsByTagName('script'); // Live NodeList collection\n  \n      if (scriptLocation === currentLocation) {\n        pageSource = document.documentElement.outerHTML;\n        inlineScriptSourceRegExp = new RegExp('(?:[^\\\\n]+?\\\\n){0,' + (line - 2) + '}[^<]*<script>([\\\\d\\\\D]*?)<\\\\/script>[\\\\d\\\\D]*', 'i');\n        inlineScriptSource = pageSource.replace(inlineScriptSourceRegExp, '$1').trim();\n      }\n  \n      for (var i = 0; i < scripts.length; i++) {\n        // If ready state is interactive, return the script tag\n        if (scripts[i].readyState === 'interactive') {\n          return scripts[i];\n        }\n  \n        // If src matches, return the script tag\n        if (scripts[i].src === scriptLocation) {\n          return scripts[i];\n        }\n  \n        // If inline source matches, return the script tag\n        if (\n          scriptLocation === currentLocation &&\n          scripts[i].innerHTML &&\n          scripts[i].innerHTML.trim() === inlineScriptSource\n        ) {\n          return scripts[i];\n        }\n      }\n  \n      // If no match, return null\n      return null;\n    }\n  };\n\n  return getCurrentScript\n}));\n","/**\n * Date:2020/11/9\n * Desc:\n */\n/**\n * Date:2020/11/2\n * Desc: ptz cmd 封装\n * cmd[0] //首字节以05H开头\n * cmd[1] //组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n *        //  校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n * cmd[2] //地址的低8位？？？什么地址，地址范围000h ~ FFFh(0~4095),其中000h为广播地址\n * cmd[3] //指令码\n * cmd[4] //数据1,水平控制速度、聚焦速度\n * cmd[5] //数据2，垂直控制速度、光圈速度\n * cmd[6] // 高4位为数据3=变倍控制速度，低4位为地址高4位\n */\n\nconst PTZ_TYPE = {\n    stop: 'stop',\n    right: 'right',\n    left: 'left',\n    up: 'up',\n    down: 'down',\n    leftUp: 'leftUp',\n    leftDown: 'leftDown',\n    rightUp: 'rightUp',\n    rightDown: 'rightDown',\n    zoomFar: 'zoomFar',\n    zoomNear: 'zoomNear',\n    apertureFar: 'apertureFar',\n    apertureNear: 'apertureNear',\n    focusFar: 'focusFar',\n    focusNear: 'focusNear',\n    setPos: 'setPos',\n    calPos: 'calPos',\n    delPos: 'delPos'\n};\n\nconst PTZ_CMD_TYPE = {\n    stop: 0x00,\n\n    right: 0x01,\n    left: 0x02,\n    up: 0x08,\n    down: 0x04,\n\n    leftUp: 0x0A,\n    leftDown: 0x06,\n    rightUp: 0x09,\n    rightDown: 0x05,\n\n    zoomFar: 0x10, // 镜头 放大\n    zoomNear: 0x20,  // 镜头 缩小\n\n    apertureFar: 0x48, // 光圈 缩小\n    apertureNear: 0x44, // 光圈 放大\n\n    focusFar: 0x42, // 聚焦 近\n    focusNear: 0x41, // 聚焦 远\n\n    setPos: 0x81,\n    calPos: 0x82,\n    delPos: 0x83\n};\n\nconst SPEED_ARRAY = [0x19, 0x32, 0x4b, 0x64, 0x7d, 0x96, 0xAF, 0xC8, 0xE1, 0xFA];\nconst POSITION_ARRAY = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10];\n\n// 获取 direction 方向型\n/**\n *\n * @param options\n *        type:\n *        speed:default 5\n *        index:\n * @returns {string}\n */\nfunction getPTZCmd(options) {\n    const {type, speed, index} = options;\n    const ptzSpeed = getPTZSpeed(speed);\n    let indexValue3, indexValue4, indexValue5, indexValue6;\n    indexValue3 = PTZ_CMD_TYPE[type];\n    switch (type) {\n        case PTZ_TYPE.up:\n        case PTZ_TYPE.down:\n        case PTZ_TYPE.apertureFar:\n        case PTZ_TYPE.apertureNear:\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.right:\n        case PTZ_TYPE.left:\n        case PTZ_TYPE.focusFar:\n        case PTZ_TYPE.focusNear:\n            indexValue4 = ptzSpeed;\n            break;\n        case PTZ_TYPE.leftUp:\n        case PTZ_TYPE.leftDown:\n        case PTZ_TYPE.rightUp:\n        case PTZ_TYPE.rightDown:\n            indexValue4 = ptzSpeed;\n            indexValue5 = ptzSpeed;\n            break;\n        case PTZ_TYPE.zoomFar:\n        case PTZ_TYPE.zoomNear:\n            indexValue6 = 0x10;\n            break;\n        case PTZ_TYPE.calPos:\n        case PTZ_TYPE.delPos:\n        case PTZ_TYPE.setPos:\n            indexValue5 = getPTZPositionIndex(index);\n            break;\n        default:\n            break;\n    }\n    return ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6);\n}\n\nfunction getPTZSpeed(speed) {\n    speed = speed || 5;\n    const speedIndex = speed - 1;\n    const ptzSpeed = SPEED_ARRAY[speedIndex] || SPEED_ARRAY[4];\n    return ptzSpeed;\n}\n\nfunction getPTZPositionIndex(index) {\n    return POSITION_ARRAY[index - 1];\n}\n\nfunction ptzCmdToString(indexValue3, indexValue4, indexValue5, indexValue6) {\n    //\n    let cmd = Buffer.alloc(8);\n    // 首字节以05H开头\n    cmd[0] = 0xA5;\n    // 组合码，高4位为版本信息v1.0,版本信息0H，低四位为校验码\n    cmd[1] = 0x0F;\n    // 校验码 = (cmd[0]的高4位+cmd[0]的低4位+cmd[1]的高4位)%16\n    cmd[2] = 0x01;\n    //\n    if (indexValue3) {\n        cmd[3] = indexValue3;\n    }\n    if (indexValue4) {\n        cmd[4] = indexValue4;\n    }\n    if (indexValue5) {\n        cmd[5] = indexValue5;\n    }\n    if (indexValue6) {\n        cmd[6] = indexValue6;\n    }\n\n    cmd[7] = (cmd[0] + cmd[1] + cmd[2] + cmd[3] + cmd[4] + cmd[5] + cmd[6]) % 256;\n\n    return bytes2HexString(cmd);\n}\n\nfunction bytes2HexString(byte) {\n    let hexs = \"\";\n    for (let i = 0; i < byte.length; i++) {\n        let hex = (byte[i]).toString(16);\n        if (hex.length === 1) {\n            hex = '0' + hex;\n        }\n        hexs += hex.toUpperCase();\n    }\n    return hexs;\n}\n\nexport {\n    getPTZCmd,\n    PTZ_TYPE\n}\n","export * from \"-!../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=style&index=0&id=59b6c9a0&scoped=true&lang=css&\"","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","export * from \"-!../../node_modules/mini-css-extract-plugin/dist/loader.js??ref--6-oneOf-1-0!../../node_modules/css-loader/dist/cjs.js??ref--6-oneOf-1-1!../../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../../node_modules/postcss-loader/src/index.js??ref--6-oneOf-1-2!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Records.vue?vue&type=style&index=0&id=72d12ba2&scoped=true&lang=css&\"","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <http://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n *     incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n  ? global.TYPED_ARRAY_SUPPORT\n  : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n  try {\n    var arr = new Uint8Array(1)\n    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n    return arr.foo() === 42 && // typed array instances can be augmented\n        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n  } catch (e) {\n    return false\n  }\n}\n\nfunction kMaxLength () {\n  return Buffer.TYPED_ARRAY_SUPPORT\n    ? 0x7fffffff\n    : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n  if (kMaxLength() < length) {\n    throw new RangeError('Invalid typed array length')\n  }\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = new Uint8Array(length)\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    if (that === null) {\n      that = new Buffer(length)\n    }\n    that.length = length\n  }\n\n  return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n    return new Buffer(arg, encodingOrOffset, length)\n  }\n\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new Error(\n        'If encoding is specified then the first argument must be a string'\n      )\n    }\n    return allocUnsafe(this, arg)\n  }\n  return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n  arr.__proto__ = Buffer.prototype\n  return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n  if (typeof value === 'number') {\n    throw new TypeError('\"value\" argument must not be a number')\n  }\n\n  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n    return fromArrayBuffer(that, value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'string') {\n    return fromString(that, value, encodingOrOffset)\n  }\n\n  return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n  Buffer.prototype.__proto__ = Uint8Array.prototype\n  Buffer.__proto__ = Uint8Array\n  if (typeof Symbol !== 'undefined' && Symbol.species &&\n      Buffer[Symbol.species] === Buffer) {\n    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n    Object.defineProperty(Buffer, Symbol.species, {\n      value: null,\n      configurable: true\n    })\n  }\n}\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be a number')\n  } else if (size < 0) {\n    throw new RangeError('\"size\" argument must not be negative')\n  }\n}\n\nfunction alloc (that, size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(that, size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpretted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(that, size).fill(fill, encoding)\n      : createBuffer(that, size).fill(fill)\n  }\n  return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n  assertSize(size)\n  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) {\n    for (var i = 0; i < size; ++i) {\n      that[i] = 0\n    }\n  }\n  return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('\"encoding\" must be a valid string encoding')\n  }\n\n  var length = byteLength(string, encoding) | 0\n  that = createBuffer(that, length)\n\n  var actual = that.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    that = that.slice(0, actual)\n  }\n\n  return that\n}\n\nfunction fromArrayLike (that, array) {\n  var length = array.length < 0 ? 0 : checked(array.length) | 0\n  that = createBuffer(that, length)\n  for (var i = 0; i < length; i += 1) {\n    that[i] = array[i] & 255\n  }\n  return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n  array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\\'offset\\' is out of bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\\'length\\' is out of bounds')\n  }\n\n  if (byteOffset === undefined && length === undefined) {\n    array = new Uint8Array(array)\n  } else if (length === undefined) {\n    array = new Uint8Array(array, byteOffset)\n  } else {\n    array = new Uint8Array(array, byteOffset, length)\n  }\n\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = array\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    that = fromArrayLike(that, array)\n  }\n  return that\n}\n\nfunction fromObject (that, obj) {\n  if (Buffer.isBuffer(obj)) {\n    var len = checked(obj.length) | 0\n    that = createBuffer(that, len)\n\n    if (that.length === 0) {\n      return that\n    }\n\n    obj.copy(that, 0, 0, len)\n    return that\n  }\n\n  if (obj) {\n    if ((typeof ArrayBuffer !== 'undefined' &&\n        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n      if (typeof obj.length !== 'number' || isnan(obj.length)) {\n        return createBuffer(that, 0)\n      }\n      return fromArrayLike(that, obj)\n    }\n\n    if (obj.type === 'Buffer' && isArray(obj.data)) {\n      return fromArrayLike(that, obj.data)\n    }\n  }\n\n  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < kMaxLength()` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= kMaxLength()) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + kMaxLength().toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError('Arguments must be Buffers')\n  }\n\n  if (a === b) return 0\n\n  var x = a.length\n  var y = b.length\n\n  for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  var i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  var buffer = Buffer.allocUnsafe(length)\n  var pos = 0\n  for (i = 0; i < list.length; ++i) {\n    var buf = list[i]\n    if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    }\n    buf.copy(buffer, pos)\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    string = '' + string\n  }\n\n  var len = string.length\n  if (len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n      case undefined:\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) return utf8ToBytes(string).length // assume utf8\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  var loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  var i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  var len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (var i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  var len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (var i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  var len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (var i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  var length = this.length | 0\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  var str = ''\n  var max = exports.INSPECT_MAX_BYTES\n  if (this.length > 0) {\n    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n    if (this.length > max) str += ' ... '\n  }\n  return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError('Argument must be a Buffer')\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  var x = thisEnd - thisStart\n  var y = end - start\n  var len = Math.min(x, y)\n\n  var thisCopy = this.slice(thisStart, thisEnd)\n  var targetCopy = target.slice(start, end)\n\n  for (var i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset  // Coerce to Number.\n  if (isNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (Buffer.TYPED_ARRAY_SUPPORT &&\n        typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  var indexSize = 1\n  var arrLength = arr.length\n  var valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  var i\n  if (dir) {\n    var foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      var found = true\n      for (var j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  var remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  // must be an even number of digits\n  var strLen = string.length\n  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  for (var i = 0; i < length; ++i) {\n    var parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (isNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n  return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset | 0\n    if (isFinite(length)) {\n      length = length | 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  // legacy write(string, encoding, offset, length) - remove in v0.13\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  var remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n        return asciiWrite(this, string, offset, length)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Write(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  var res = []\n\n  var i = start\n  while (i < end) {\n    var firstByte = buf[i]\n    var codePoint = null\n    var bytesPerSequence = (firstByte > 0xEF) ? 4\n      : (firstByte > 0xDF) ? 3\n      : (firstByte > 0xBF) ? 2\n      : 1\n\n    if (i + bytesPerSequence <= end) {\n      var secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  var len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  var res = ''\n  var i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  var len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  var out = ''\n  for (var i = start; i < end; ++i) {\n    out += toHex(buf[i])\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  var bytes = buf.slice(start, end)\n  var res = ''\n  for (var i = 0; i < bytes.length; i += 2) {\n    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  var len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  var newBuf\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    newBuf = this.subarray(start, end)\n    newBuf.__proto__ = Buffer.prototype\n  } else {\n    var sliceLen = end - start\n    newBuf = new Buffer(sliceLen, undefined)\n    for (var i = 0; i < sliceLen; ++i) {\n      newBuf[i] = this[i + start]\n    }\n  }\n\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  var val = this[offset + --byteLength]\n  var mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var i = byteLength\n  var mul = 1\n  var val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var mul = 1\n  var i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n      (littleEndian ? i : 1 - i) * 8\n  }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffffffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n  }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset + 3] = (value >>> 24)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 1] = (value >>> 8)\n    this[offset] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = 0\n  var mul = 1\n  var sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  var sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 3] = (value >>> 24)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  var len = end - start\n  var i\n\n  if (this === target && start < targetStart && targetStart < end) {\n    // descending copy from end\n    for (i = len - 1; i >= 0; --i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n    // ascending copy from start\n    for (i = 0; i < len; ++i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, start + len),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (val.length === 1) {\n      var code = val.charCodeAt(0)\n      if (code < 256) {\n        val = code\n      }\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  var i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    var bytes = Buffer.isBuffer(val)\n      ? val\n      : utf8ToBytes(new Buffer(val, encoding).toString())\n    var len = bytes.length\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction stringtrim (str) {\n  if (str.trim) return str.trim()\n  return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n  if (n < 16) return '0' + n.toString(16)\n  return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  var codePoint\n  var length = string.length\n  var leadSurrogate = null\n  var bytes = []\n\n  for (var i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n     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874.666667a21.333333 21.333333 0 0 1-21.333333-21.333334v-128a21.333333 21.333333 0 0 1 42.666666 0v128a21.333333 21.333333 0 0 1-21.333333 21.333334z\"  /></svg>\n      </div>\n      <div class=\"control5\">\n        <i-select v-model=\"ptzPositionIndex\" style=\"width: 100px\">\n          <Option v-for=\"n in 10\" :value=\"n\" :key=\"n\">预置点{{n}}</Option>\n        </i-select>\n        <i-button type=\"primary\" @click=\"ptzCmd(ptzType.setPos)\">设置</i-button>\n        <i-button type=\"success\" @click=\"ptzCmd(ptzType.calPos)\">调用</i-button>\n        <i-button type=\"error\" @click=\"ptzCmd(ptzType.delPos)\">删除</i-button>\n        速度：\n        <InputNumber :max=\"10\" :min=\"1\" v-model=\"ptzSpeed\"></InputNumber>\n      </div>\n    </div>\n    <div slot=\"footer\">\n      <mu-badge v-if=\"remoteSDP\">\n        <a slot=\"content\" :href=\"remoteSDPURL\" download=\"remoteSDP.txt\">remoteSDP</a>\n      </mu-badge>\n      <mu-badge v-if=\"localSDP\">\n        <a slot=\"content\" :href=\"localSDPURL\" download=\"localSDP.txt\">localSDP</a>\n      </mu-badge>\n    </div>\n  </Modal>\n</template>\n<script>\n  import {PTZ_TYPE} from \"../utils/ptz-cmd\";\n  const PTZ_DIRECTION_ARRAY = [PTZ_TYPE.up,PTZ_TYPE.right,PTZ_TYPE.down,PTZ_TYPE.left,PTZ_TYPE.leftUp,PTZ_TYPE.rightUp,PTZ_TYPE.leftDown,PTZ_TYPE.rightDown];\n  let pc = null;\nexport default {\n  data() {\n    return {\n      iceConnectionState: pc && pc.iceConnectionState,\n      stream: null,\n      localSDP: \"\",\n      remoteSDP: \"\",\n      remoteSDPURL: \"\",\n      localSDPURL: \"\",\n      streamPath: \"\",\n      ptzSpeed:5,\n      ptzPositionIndex:1,\n      ptzType:PTZ_TYPE,\n    };\n  },\n  props:{\n    PublicIP:String\n  },\n    methods: {\n        async play(streamPath) {\n            pc = new RTCPeerConnection();\n            pc.addTransceiver('video',{\n              direction:'recvonly'\n            })\n            this.streamPath = streamPath;\n            pc.onsignalingstatechange = e => {\n                //console.log(e);\n            };\n            pc.oniceconnectionstatechange = e => {\n                this.$toast.info(pc.iceConnectionState);\n                this.iceConnectionState = pc.iceConnectionState;\n            };\n            pc.onicecandidate = event => {\n                console.log(event)\n            };\n            pc.ontrack = event => {\n               // console.log(event);\n                if (event.track.kind == \"video\")\n                    this.stream = event.streams[0];\n            };\n            await pc.setLocalDescription(await pc.createOffer());\n            this.localSDP = pc.localDescription.sdp;\n            this.localSDPURL = URL.createObjectURL(\n                new Blob([this.localSDP], { type: \"text/plain\" })\n            );\n            const result = await this.ajax({\n                type: \"POST\",\n                processData: false,\n                data: JSON.stringify(pc.localDescription.toJSON()),\n                url: \"/webrtc/play?streamPath=\" + this.streamPath,\n                dataType: \"json\"\n            });\n            if (result.errmsg) {\n                this.$toast.error(result.errmsg);\n                return;\n            } else {\n                this.remoteSDP = result.sdp;\n                this.remoteSDPURL = URL.createObjectURL(new Blob([this.remoteSDP], { type: \"text/plain\" }));\n            }\n            await pc.setRemoteDescription(new RTCSessionDescription(result));\n        },\n        ptzCmdDirection(direction){\n          const type = PTZ_DIRECTION_ARRAY[direction-1];\n          this.ptzCmd(type);\n        },\n        startPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.right,true);\n        },\n        stopPtzCmdCycle(){\n          this.ptzCmd(PTZ_TYPE.stop);\n        },\n        ptzCmd(type,isCycling){\n          this.$emit('ptz',{type:type,speed:this.ptzSpeed,index:this.ptzPositionIndex,cycle:isCycling})\n        },\n        onClosePreview() {\n            pc.close();\n        }\n    }\n};\n</script>\n<style scoped>\n  .arrow1{\n    grid-column: 2;\n    grid-row: 1;\n  }\n  .arrow2{\n    transform: rotate(90deg);\n    grid-column: 3;\n    grid-row: 2;\n  }\n  .arrow3{\n    transform: rotate(180deg);\n    grid-column: 2;\n    grid-row: 3;\n  }\n  .arrow4{\n    transform: rotate(270deg);\n    grid-column: 1;\n    grid-row: 2;\n  }\n\n  .arrow5{\n    transform: rotate(-45deg);\n    grid-column: 1;\n    grid-row: 1;\n  }\n\n  .arrow6{\n    transform: rotate(45deg);\n    grid-column: 3;\n    grid-row: 1;\n  }\n\n  .arrow7{\n    transform: rotate(-135deg);\n    grid-column: 1;\n    grid-row: 3;\n  }\n\n  .arrow8{\n    transform: rotate(135deg);\n    grid-column: 3;\n    grid-row: 3;\n  }\n\n  .arrow9{\n    grid-column: 2;\n    grid-row: 2;\n  }\n\n.container {\n  position: relative;\n  height: 350px;\n}\n.control {\n  position: absolute;\n  top: 20px;\n  right: 0;\n  display: grid;\n  grid-template-columns: repeat(3, 33.33%);\n  grid-template-rows: repeat(3, 33.33%);\n  width: 192px;\n  height: 192px;\n}\n\n.control2{\n  top: 210px;\n}\n\n.control3{\n  top: 260px;\n}\n\n.control4{\n  top: 310px;\n}\n\n.control5{\n  top: 360px;\n}\n\n.control >* {\n  cursor: pointer;\n  fill: gray;\n  width: 50px;\n  height: 50px;\n}\n\n.control5 >*{\n  margin-right: 10px;\n}\n\n.control2 >*,.control3 >*,.control4 >*{\n  width: 40px;\n  height: 40px;\n}\n\n.control >*:hover,.cycling{\n  fill: cyan\n}\n\n\n\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player.vue?vue&type=script&lang=js&\"","/* globals __VUE_SSR_CONTEXT__ */\n\n// IMPORTANT: Do NOT use ES2015 features in this file (except for modules).\n// This module is a runtime utility for cleaner component module output and will\n// be included in the final webpack user bundle.\n\nexport default function normalizeComponent (\n  scriptExports,\n  render,\n  staticRenderFns,\n  functionalTemplate,\n  injectStyles,\n  scopeId,\n  moduleIdentifier, /* server only */\n  shadowMode /* vue-cli only */\n) {\n  // Vue.extend constructor export interop\n  var options = typeof scriptExports === 'function'\n    ? scriptExports.options\n    : scriptExports\n\n  // render functions\n  if (render) {\n    options.render = render\n    options.staticRenderFns = staticRenderFns\n    options._compiled = true\n  }\n\n  // functional template\n  if (functionalTemplate) {\n    options.functional = true\n  }\n\n  // scopedId\n  if (scopeId) {\n    options._scopeId = 'data-v-' + scopeId\n  }\n\n  var hook\n  if (moduleIdentifier) { // server build\n    hook = function (context) {\n      // 2.3 injection\n      context =\n        context || // cached call\n        (this.$vnode && this.$vnode.ssrContext) || // stateful\n        (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional\n      // 2.2 with runInNewContext: true\n      if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') {\n        context = __VUE_SSR_CONTEXT__\n      }\n      // inject component styles\n      if (injectStyles) {\n        injectStyles.call(this, context)\n      }\n      // register component module identifier for async chunk inferrence\n      if (context && context._registeredComponents) {\n        context._registeredComponents.add(moduleIdentifier)\n      }\n    }\n    // used by ssr in case component is cached and beforeCreate\n    // never gets called\n    options._ssrRegister = hook\n  } else if (injectStyles) {\n    hook = shadowMode\n      ? function () {\n        injectStyles.call(\n          this,\n          (options.functional ? this.parent : this).$root.$options.shadowRoot\n        )\n      }\n      : injectStyles\n  }\n\n  if (hook) {\n    if (options.functional) {\n      // for template-only hot-reload because in that case the render fn doesn't\n      // go through the normalizer\n      options._injectStyles = hook\n      // register for functional component in vue file\n      var originalRender = options.render\n      options.render = function renderWithStyleInjection (h, context) {\n        hook.call(context)\n        return originalRender(h, context)\n      }\n    } else {\n      // inject component registration as beforeCreate hook\n      var existing = options.beforeCreate\n      options.beforeCreate = existing\n        ? [].concat(existing, hook)\n        : [hook]\n    }\n  }\n\n  return {\n    exports: scriptExports,\n    options: options\n  }\n}\n","import { render, staticRenderFns } from \"./Player.vue?vue&type=template&id=76558468&scoped=true&\"\nimport script from \"./Player.vue?vue&type=script&lang=js&\"\nexport * from \"./Player.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player.vue?vue&type=style&index=0&id=76558468&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"76558468\",\n  null\n  \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{staticClass:\"player-wrap\"},[(_vm.rtcStream)?[_c('video',{attrs:{\"autoplay\":\"\",\"muted\":\"\",\"controls\":\"\"},domProps:{\"srcObject\":_vm.rtcStream,\"muted\":true}})]:_vm._e()],2)}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","<template>\n    <div class=\"player-wrap\">\n        <template v-if=\"rtcStream\">\n            <video :srcObject.prop=\"rtcStream\" autoplay muted controls></video>\n        </template>\n    </div>\n</template>\n\n<script>\n    export default {\n        name: \"WebrtcPlayer\",\n        rtcPeerConnection: null,\n        data() {\n            return {\n                iceConnectionState: '',\n                rtcPeerConnectionInit: false,\n                rtcStream: null\n            }\n        },\n        props: {\n            streamPath: {\n                type: String,\n                default: ''\n            }\n        },\n        async created() {\n            await this.initRtcPeerConnection();\n            console.log('initRtcPeerConnectioned');\n            if (this.streamPath) {\n                await this.play(this.streamPath);\n                console.log('played');\n            }\n        },\n        methods: {\n            async initRtcPeerConnection() {\n                const rtcPeerConnection = new RTCPeerConnection();\n\n                rtcPeerConnection.addTransceiver('video', {\n                    direction: \"recvonly\"\n                });\n\n                rtcPeerConnection.onsignalingstatechange = e => {\n                    console.log('onsignalingstatechange', e);\n                };\n\n                rtcPeerConnection.oniceconnectionstatechange = e => {\n                    console.log('oniceconnectionstatechange', rtcPeerConnection.iceConnectionState);\n                };\n\n                rtcPeerConnection.onicecandidate = event => {\n                    console.log('onicecandidate', event);\n                };\n\n                rtcPeerConnection.ontrack = event => {\n                    console.log('ontrack', event);\n                    if (event.track.kind === \"video\") {\n                        this.rtcStream = event.streams[0];\n                    }\n                };\n\n                const rtcSessionDescriptionInit = await rtcPeerConnection.createOffer();\n                await rtcPeerConnection.setLocalDescription(rtcSessionDescriptionInit);\n                this.rtcPeerConnectionInit = true;\n                this.$options.rtcPeerConnection = rtcPeerConnection;\n            },\n\n            //\n            async play(streamPath) {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                const localDescriptionData = rtcPeerConnection.localDescription.toJSON();\n                const result = await this.ajax({\n                    type: \"POST\",\n                    processData: false,\n                    data: JSON.stringify(localDescriptionData),\n                    url: \"/webrtc/play?streamPath=\" + streamPath,\n                    dataType: \"json\"\n                });\n                if (result.errmsg) {\n                    console.error(result.errmsg);\n                    return;\n                }\n                //\n                rtcPeerConnection.setRemoteDescription(new RTCSessionDescription({\n                    type: result.type,\n                    sdp: result.sdp\n                }));\n            },\n            close() {\n                const rtcPeerConnection = this.$options.rtcPeerConnection;\n                rtcPeerConnection && rtcPeerConnection.close();\n            }\n        },\n        destroyed() {\n            this.close();\n        }\n    }\n</script>\n\n<style scoped>\n    .player-wrap {\n        width: 100%;\n        height: 100%;\n        border-radius: 4px;\n        box-shadow: 0 0 5px #40d3fc, inset 0 0 5px #40d3fc, 0 0 0 1px #40d3fc;\n    }\n\n    .player-wrap video {\n        width: 100%;\n        height: 100%;\n    }\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Player2.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Player2.vue?vue&type=template&id=3d23233a&scoped=true&\"\nimport script from \"./Player2.vue?vue&type=script&lang=js&\"\nexport * from \"./Player2.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Player2.vue?vue&type=style&index=0&id=3d23233a&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"3d23233a\",\n  null\n  \n)\n\nexport default component.exports","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('Modal',_vm._g(_vm._b({attrs:{\"draggable\":\"\",\"width\":\"900\",\"title\":\"Records\"},on:{\"on-ok\":_vm.onClosePreview,\"on-cancel\":_vm.onClosePreview}},'Modal',_vm.$attrs,false),_vm.$listeners),[_c('div',{staticClass:\"container\"},[_c('div',{staticClass:\"search\"},[_c('DatePicker',{staticStyle:{\"width\":\"200px\"},attrs:{\"type\":\"date\",\"options\":_vm.timeOptions,\"value\":_vm.search.time,\"placeholder\":\"请选择时间\",\"clearable\":false},on:{\"change\":_vm.handleTimeChange}})],1),_c('div',[_c('mu-data-table',{attrs:{\"columns\":_vm.columns,\"data\":_vm.recordList},scopedSlots:_vm._u([{key:\"expand\",fn:function(prop){return [_c('div',[_c('m-button',{on:{\"click\":function($event){return _vm.play(prop.row)}}},[_vm._v(\"播放\")])],1)]}},{key:\"default\",fn:function(scope){return [_c('td',[_vm._v(_vm._s(scope.row.DeviceID))]),_c('td',[_vm._v(_vm._s(scope.row.Name))]),_c('td',[_vm._v(_vm._s(scope.row.time))]),_c('td',[_vm._v(_vm._s(scope.row.length))]),_c('td',[_vm._v(_vm._s(scope.row.FilePath))]),_c('td',[_vm._v(_vm._s(scope.row.Address))]),_c('td',[_vm._v(_vm._s(scope.row.Type))])]}}])})],1)])])}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","/**\n * Date:2020/12/24\n * Desc:\n */\n\nexport function getOneTimeRange(time, options) {\n    let date;\n\n    // 都为空的时候\n    if (!time && !options) {\n        date = new Date();\n    } else if (Object.prototype.toString.call(time) !== '[object Date]' && time !== null && typeof time === 'object') {\n        // time 为 options 参数。\n        options = time;\n        date = new Date();\n    } else if (Object.prototype.toString.call(time) === '[object Date]') {\n        // time 是时间格式\n        date = time;\n    } else {\n        // time 是 int 格式。\n        if (('' + time).length === 10) time = parseInt(time) * 1000;\n        time = +time; // 转成int 型\n        date = new Date(time);\n    }\n\n    options = options || {};\n\n    let result = {\n        start: 0,\n        end: 0\n    };\n\n    let _startTime = new Date(date).setHours(options.startHour || 0, options.startMin || 0, 0, 0);\n    let _endTime = new Date(date).setHours(options.endHour || 23, options.endMin || 59, 59, 0);\n    result.start = new Date(_startTime).getTime();\n    result.end = new Date(_endTime).getTime();\n\n    return result;\n};\n\n\nexport function formatTimestamp(t) {\n    var d = 0,\n        h = 0,\n        m = 0,\n        s = 0;\n    if (t > 0) {\n        d = Math.floor(t / 1000 / 3600 / 24)\n        h = Math.floor(t / 1000 / 60 / 60 % 24)\n        m = Math.floor(t / 1000 / 60 % 60)\n        s = Math.floor(t / 1000 % 60)\n    }\n\n    return `${d}天${h}时${m}分${s}秒`\n}\n\nexport function formatTimeTips(timestamp) {\n    let result;\n\n    //\n    if (time > -1) {\n        let hour = Math.floor(timestamp / 3600);\n        let min = Math.floor(timestamp / 60) % 60;\n        let sec = timestamp % 60;\n\n        sec = Math.round(sec);\n\n        if (hour < 10) {\n            result = '0' + hour + \":\";\n        } else {\n            result = hour + \":\";\n        }\n\n        if (min < 10) {\n            result += \"0\";\n        }\n        result += min + \":\";\n        if (sec < 10) {\n            result += \"0\";\n        }\n        result += sec.toFixed(0);\n    }\n\n    return result;\n}\n\n\nexport function parseTime(time, cFormat) {\n    if (arguments.length === 0) {\n        return null\n    }\n    var format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'\n    var date;\n    if (typeof time === 'object') {\n        date = time\n    } else {\n        if (('' + time).length === 10) time = parseInt(time) * 1000;\n        time = +time; // 转成int 型\n        date = new Date(time)\n    }\n    var formatObj = {\n        y: date.getFullYear(),\n        m: date.getMonth() + 1,\n        d: date.getDate(),\n        h: date.getHours(),\n        i: date.getMinutes(),\n        s: date.getSeconds(),\n        a: date.getDay()\n    };\n    var time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {\n        var value = formatObj[key]\n        if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]\n        if (result.length > 0 && value < 10) {\n            value = '0' + value\n        }\n        return value || 0\n    });\n    return time_str\n}\n","<template>\n    <Modal v-bind=\"$attrs\"\n           draggable\n           width=\"900\"\n           v-on=\"$listeners\"\n           title=\"Records\"\n           @on-ok=\"onClosePreview\"\n           @on-cancel=\"onClosePreview\">\n        <div class=\"container\">\n            <div class=\"search\">\n                <DatePicker type=\"date\" :options=\"timeOptions\" :value=\"search.time\" placeholder=\"请选择时间\"\n                            style=\"width: 200px\" :clearable=\"false\"\n                            @change=\"handleTimeChange\"></DatePicker>\n            </div>\n            <div>\n                <mu-data-table :columns=\"columns\" :data=\"recordList\">\n                    <template #expand=\"prop\">\n                        <div>\n                            <m-button @click=\"play(prop.row)\">播放</m-button>\n                        </div>\n                    </template>\n                    <template #default=\"scope\">\n                        <td>{{scope.row.DeviceID}}</td>\n                        <td>{{scope.row.Name}}</td>\n                        <td>{{scope.row.time}}</td>\n                        <td>{{scope.row.length}}</td>\n                        <td>{{scope.row.FilePath}}</td>\n                        <td>{{scope.row.Address}}</td>\n                        <td>{{scope.row.Type}}</td>\n                    </template>\n                </mu-data-table>\n            </div>\n        </div>\n    </Modal>\n</template>\n\n<script>\n    import {getOneTimeRange, formatTimeTips, parseTime} from \"../utils\";\n\n    const _now = new Date();\n\n    export default {\n        name: \"Records\",\n        props: {\n            records: Array\n        },\n        data() {\n            return {\n                timeOptions: {\n                    disabledDate(date) {\n                        return date && date.valueOf() > Date.now();\n                    }\n                },\n                search: {\n                    id: null,\n                    channel: 0,\n                    deviceId: null,\n                    time: _now\n                },\n                columns: Object.freeze(\n                    [\n                        '设备ID',\n                        '名称',\n                        '时间',\n                        '时长',\n                        '文件路径',\n                        '地址',\n                        '类型'\n                    ].map((title) => ({\n                        title,\n                    }))\n                )\n            }\n        },\n        computed: {\n            startTime() {\n                if (!this.search.time) {\n                    return ''\n                }\n                const start = getOneTimeRange(this.search.time).start;\n                return new Date(start).toISOString();\n            },\n            endTime() {\n\n                if (!this.search.time) {\n                    return ''\n                }\n\n                const end = getOneTimeRange(this.search.time).end;\n                return new Date(end).toISOString();\n            },\n            recordList() {\n                const list = this.records.map((record) => {\n                    const startTime = new Date(record.StartTime).getTime();\n                    const endTime = new Date(record.EndTime).getTime();\n                    const timestamp = endTime - startTime;\n                    const timeLength = formatTimeTips(timestamp);\n\n                    const _startTime = parseTime(startTime);\n\n                    record.length = timeLength;\n                    record.time = _startTime;\n                    return record;\n                });\n                return list;\n            }\n        },\n\n        methods: {\n            getList(options) {\n                this.search.id = options.id;\n                this.search.channel = options.channel;\n                this.search.deviceId = options.deviceId;\n                this._fetchList();\n            },\n\n            _fetchList() {\n                if (this.search.id && this.search.channel && this.startTime && this.endTime) {\n                    const query = {\n                        id: this.search.id,\n                        channel: this.search.channel,\n                        startTime: this.search.startTime,\n                        endTime: this.search.endTime\n                    };\n\n                    this.ajax.get(\"/gb28181/query/records\", query).then((x) => {\n\n                    });\n                }\n            },\n            onClosePreview() {\n                this.$emit('close');\n            },\n            handleTimeChange(date) {\n                this.search.time = date;\n                this._fetchList();\n            },\n            play() {\n\n            }\n        }\n    }\n</script>\n\n<style scoped>\n\n    .container {\n        position: relative;\n        height: 500px;\n        background-image: radial-gradient(#c52dd07a, #4a17987a, #0300137a);\n        color: #ffffff;\n        background-color: black;\n        overflow: auto;\n    }\n\n    .search {\n        padding: 10px 0;\n    }\n</style>\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Records.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./Records.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Records.vue?vue&type=template&id=72d12ba2&scoped=true&\"\nimport script from \"./Records.vue?vue&type=script&lang=js&\"\nexport * from \"./Records.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Records.vue?vue&type=style&index=0&id=72d12ba2&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"72d12ba2\",\n  null\n  \n)\n\nexport default component.exports","<template>\n    <div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 0\">\n            <mu-data-table :data=\"Devices\" :columns=\"columns\">\n                <template #expand=\"prop\">\n                    <mu-data-table\n                            :data=\"prop.row.Channels\"\n                            :columns=\"columns2\"\n                    >\n                        <template #default=\"{ row: item, $index }\">\n                            <td>{{ item.DeviceID }}</td>\n                            <td>{{ item.Name }}</td>\n                            <td>{{ item.Manufacturer }}</td>\n                            <td>{{ item.Address }}</td>\n                            <td>{{ item.Status }}</td>\n                            <td>\n                                <mu-button\n                                        flat\n                                        v-if=\"item.Connected\"\n                                        @click=\"ptz(prop.row.ID, $index, item)\"\n                                >云台\n                                </mu-button>\n                                <mu-button\n                                        flat\n                                        v-if=\"item.Connected\"\n                                        @click=\"bye(prop.row.ID, $index)\"\n                                >断开\n                                </mu-button\n                                >\n                                <mu-button\n                                        v-else\n                                        flat\n                                        @click=\"invite(prop.row.ID, $index, item)\"\n                                >连接\n                                </mu-button>\n                                <mu-button @click=\"getRecords(prop.row.ID, $index,item)\">录像</mu-button>\n                            </td>\n                        </template>\n                    </mu-data-table>\n                </template>\n                <template #default=\"{ row: item }\">\n                    <td>{{ item.ID }}</td>\n                    <td>{{ item.Addr }}</td>\n                    <td>{{ item.Channels ? item.Channels.length : 0 }}</td>\n                    <td>\n                        <StartTime :value=\"item.RegisterTime\"></StartTime>\n                    </td>\n                    <td>\n                        <StartTime :value=\"item.UpdateTime\"></StartTime>\n                    </td>\n                    <td>{{ item.Status }}</td>\n                </template>\n            </mu-data-table>\n        </div>\n        <div class=\"tabpanel\" v-if=\"$parent.titleTabActive === 1\">\n            <div class=\"flex-box\">\n                <template v-for=\"(channel,index) in channelShowList\">\n                    <div class=\"flex-item\" :key=\"index\" v-if=\"channel.DeviceID\">\n                        <webrtc-player2 :stream-path=\"'gb28181/'+channel.DeviceID\"></webrtc-player2>\n                    </div>\n                </template>\n            </div>\n            <template v-if=\"channelList.length > 0\">\n                <Page :total=\"channelList.length\" :page-size=\"pageInfo.onePageSize\"\n                      @on-change=\"handlePageChange\"></Page>\n            </template>\n        </div>\n        <webrtc-player\n                ref=\"player\"\n                @ptz=\"sendPtz\"\n                v-model=\"previewStreamPath\"\n                :PublicIP=\"PublicIP\"\n        ></webrtc-player>\n        <records ref=\"records\" v-model=\"recordModal\" :records=\"recordList\" @close=\"initRecordSearch\"></records>\n    </div>\n</template>\n<script>\n    import WebrtcPlayer from \"./components/Player\";\n    import WebrtcPlayer2 from \"./components/Player2\";\n    import Records from './components/Records';\n    import {getPTZCmd, PTZ_TYPE} from \"./utils/ptz-cmd\";\n    import {getOneTimeRange} from \"./utils\";\n\n\n    export default {\n        components: {\n            WebrtcPlayer,\n            WebrtcPlayer2,\n            Records\n        },\n        props: {\n            ListenAddr: String,\n        },\n        computed: {\n            PublicIP() {\n                return this.ListenAddr.split(\":\")[0];\n            },\n        },\n        data() {\n            return {\n                Devices: [],\n                previewStreamPath: false,\n                channelList: [],\n                channelShowList: [],\n                pageInfo: {\n                    onePageSize: 9,\n                    totalPage: 0,\n                    currentPage: 0\n                },\n                recordList: [],\n                recordModal: false,\n                recordSearch: {\n                    id: null,\n                    channel: 0,\n                    deviceId: null\n                },\n                context: {\n                    id: null,\n                    channel: 0,\n                    item: null,\n                },\n                columns: Object.freeze(\n                    [\n                        \"设备号\",\n                        \"地址\",\n                        \"通道数\",\n                        \"注册时间\",\n                        \"更新时间\",\n                        \"状态\",\n                    ].map((title) => ({\n                        title,\n                    }))\n                ),\n                columns2: Object.freeze([\n                    \"通道编号\",\n                    \"名称\",\n                    \"厂商\",\n                    \"地址\",\n                    \"状态\",\n                    \"操作\",\n                ]).map((title) => ({title})),\n            };\n        },\n        created() {\n            this.fetchlist();\n        },\n        mounted() {\n            this.$parent.titleTabs = [\"列表\", \"N路播放\"];\n        },\n        methods: {\n            fetchlist() {\n                const listES = new EventSource(this.apiHost + \"/gb28181/list\");\n                listES.onmessage = (evt) => {\n                    if (!evt.data) return;\n                    this.Devices = JSON.parse(evt.data) || [];\n                    this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));\n                    let channelList = [];\n                    let recordList = [];\n                    this.Devices.forEach((device) => {\n                        const channels = device.Channels || [];\n                        if (channels.length > 0) {\n                            channelList = channelList.concat(channels);\n                        }\n\n                        if (this.recordSearch.id && this.recordSearch.deviceId) {\n                            const channel = channels.filter((i) => {\n                                return i.DeviceID === this.recordSearch.deviceId && this.recordSearch.id === device.ID;\n                            });\n\n                            if (channel) {\n                                this.recordList = channel.Records || [];\n                            }\n                        }\n                    });\n                    if (channelList.length > 0) {\n                        this.channelList = channelList;\n                        this.updatePageInfo(channelList.length);\n                    }\n                };\n                this.$once(\"hook:destroyed\", () => listES.close());\n            },\n            ptz(id, channel, item) {\n                this.context = {\n                    id,\n                    channel,\n                    item,\n                };\n                this.previewStreamPath = true;\n                this.$nextTick(() =>\n                    this.$refs.player.play(\"gb28181/\" + item.DeviceID)\n                );\n            },\n            sendPtz(options) {\n                const ptzCmd = getPTZCmd(options);\n                const ptzCmdStop = getPTZCmd({type: PTZ_TYPE.stop});\n                this.ajax\n                    .get(\"/gb28181/control\", {\n                        id: this.context.id,\n                        channel: this.context.channel,\n                        ptzcmd: ptzCmd,\n                    })\n                    .then((x) => {\n                        if (\n                            options.type === PTZ_TYPE.stop ||\n                            options.cycle === true\n                        ) {\n                            return;\n                        }\n                        setTimeout(() => {\n                            this.ajax.get(\"/gb28181/control\", {\n                                id: this.context.id,\n                                channel: this.context.channel,\n                                ptzcmd: ptzCmdStop,\n                            });\n                        }, 500);\n                    });\n            },\n\n\n            sendQueryRecords(options) {\n\n            },\n\n            handlePageChange(page) {\n                let showList = [];\n                const onePageSize = this.pageInfo.onePageSize;\n                const firstIndex = page * onePageSize - onePageSize;\n                const lastIndex = page * onePageSize - 1;\n                showList = this.channelList.filter((item, index) => {\n                    return index >= firstIndex && index <= lastIndex;\n                });\n\n                this.channelShowList = showList;\n                if (showList.length > 0) {\n                    this.pageInfo.currentPage = page;\n                }\n            },\n            updatePageInfo(totalSize) {\n                const onePageSize = this.pageInfo.onePageSize;\n                let totalPage = totalSize / onePageSize;\n\n                if (totalSize % onePageSize > 0) {\n                    totalPage = totalPage + 1;\n                }\n                this.pageInfo.totalPage = totalPage;\n                if (this.pageInfo.currentPage === 0) {\n                    this.handlePageChange(1)\n                }\n            },\n            invite(id, channel, item) {\n                this.ajax.get(\"/gb28181/invite\", {id, channel}).then((x) => {\n                    item.Connected = true;\n                });\n            },\n            bye(id, channel, item) {\n                this.ajax.get(\"/gb28181/bye\", {id, channel}).then((x) => {\n                    item.Connected = false;\n                });\n            },\n\n            getRecords(id, channel, item) {\n                this.recordSearch.id = id;\n                this.recordSearch.channel = channel;\n                this.recordSearch.deviceId = item.DeviceID;\n                this.recordModal = true;\n                this.$nextTick(() =>\n                    this.$refs.records.getList(this.recordSearch)\n                );\n            },\n\n            initRecordSearch() {\n                this.recordModal = false;\n                this.recordSearch.id = null;\n                this.recordSearch.channel = null;\n                this.recordSearch.deviceId = null;\n                this.recordList = [];\n            }\n        },\n    };\n</script>\n<style scoped>\n    .flex-box {\n        display: flex;\n        flex-flow: row wrap;\n        align-content: flex-start;\n    }\n\n    .flex-item {\n        flex: 0 0 33.3333%;\n        height: 275px;\n        box-sizing: border-box;\n        padding: 10px;\n    }\n</style>\n","import mod from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../node_modules/cache-loader/dist/cjs.js??ref--0-0!../node_modules/vue-loader/lib/index.js??vue-loader-options!./App.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./App.vue?vue&type=template&id=59b6c9a0&scoped=true&\"\nimport script from \"./App.vue?vue&type=script&lang=js&\"\nexport * from \"./App.vue?vue&type=script&lang=js&\"\nimport style0 from \"./App.vue?vue&type=style&index=0&id=59b6c9a0&scoped=true&lang=css&\"\n\n\n/* normalize component */\nimport normalizer from \"!../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"59b6c9a0\",\n  null\n  \n)\n\nexport default component.exports","import './setPublicPath'\nimport mod from '~entry'\nexport default mod\nexport * from '~entry'\n"],"sourceRoot":""}
\ No newline at end of file
diff --git a/ui/src/App.vue b/ui/src/App.vue
index b038e8d..52b4c49 100644
--- a/ui/src/App.vue
+++ b/ui/src/App.vue
@@ -4,8 +4,8 @@
             <mu-data-table :data="Devices" :columns="columns">
                 <template #expand="prop">
                     <mu-data-table
-                        :data="prop.row.Channels"
-                        :columns="columns2"
+                            :data="prop.row.Channels"
+                            :columns="columns2"
                     >
                         <template #default="{ row: item, $index }">
                             <td>{{ item.DeviceID }}</td>
@@ -15,23 +15,25 @@
                             <td>{{ item.Status }}</td>
                             <td>
                                 <mu-button
-                                    flat
-                                    v-if="item.Connected"
-                                    @click="ptz(prop.row.ID, $index, item)"
-                                    >云台
+                                        flat
+                                        v-if="item.Connected"
+                                        @click="ptz(prop.row.ID, $index, item)"
+                                >云台
                                 </mu-button>
                                 <mu-button
-                                    flat
-                                    v-if="item.Connected"
-                                    @click="bye(prop.row.ID, $index)"
-                                    >断开</mu-button
+                                        flat
+                                        v-if="item.Connected"
+                                        @click="bye(prop.row.ID, $index)"
+                                >断开
+                                </mu-button
                                 >
                                 <mu-button
-                                    v-else
-                                    flat
-                                    @click="invite(prop.row.ID, $index, item)"
-                                    >连接
+                                        v-else
+                                        flat
+                                        @click="invite(prop.row.ID, $index, item)"
+                                >连接
                                 </mu-button>
+                                <mu-button @click="getRecords(prop.row.ID, $index,item)">录像</mu-button>
                             </td>
                         </template>
                     </mu-data-table>
@@ -59,187 +61,234 @@
                 </template>
             </div>
             <template v-if="channelList.length > 0">
-                <Page :total="channelList.length" :page-size="pageInfo.onePageSize" @on-change="handlePageChange"></Page>
+                <Page :total="channelList.length" :page-size="pageInfo.onePageSize"
+                      @on-change="handlePageChange"></Page>
             </template>
         </div>
         <webrtc-player
-            ref="player"
-            @ptz="sendPtz"
-            v-model="previewStreamPath"
-            :PublicIP="PublicIP"
+                ref="player"
+                @ptz="sendPtz"
+                v-model="previewStreamPath"
+                :PublicIP="PublicIP"
         ></webrtc-player>
+        <records ref="records" v-model="recordModal" :records="recordList" @close="initRecordSearch"></records>
     </div>
 </template>
 <script>
-import WebrtcPlayer from "./components/Player";
-import WebrtcPlayer2 from "./components/Player2";
-import { getPTZCmd, PTZ_TYPE } from "./utils/ptz-cmd";
+    import WebrtcPlayer from "./components/Player";
+    import WebrtcPlayer2 from "./components/Player2";
+    import Records from './components/Records';
+    import {getPTZCmd, PTZ_TYPE} from "./utils/ptz-cmd";
+    import {getOneTimeRange} from "./utils";
 
-export default {
-    components: {
-        WebrtcPlayer,
-        WebrtcPlayer2,
-    },
-    props: {
-        ListenAddr: String,
-    },
-    computed: {
-        PublicIP() {
-            return this.ListenAddr.split(":")[0];
+
+    export default {
+        components: {
+            WebrtcPlayer,
+            WebrtcPlayer2,
+            Records
         },
-    },
-    data() {
-        return {
-            Devices: [],
-            previewStreamPath: false,
-            channelList: [],
-            channelShowList: [],
-            pageInfo: {
-                onePageSize: 9,
-                totalPage: 0,
-                currentPage: 0
-            },
-            context: {
-                id: null,
-                channel: 0,
-                item: null,
+        props: {
+            ListenAddr: String,
+        },
+        computed: {
+            PublicIP() {
+                return this.ListenAddr.split(":")[0];
             },
-            columns: Object.freeze(
-                [
-                    "设备号",
+        },
+        data() {
+            return {
+                Devices: [],
+                previewStreamPath: false,
+                channelList: [],
+                channelShowList: [],
+                pageInfo: {
+                    onePageSize: 9,
+                    totalPage: 0,
+                    currentPage: 0
+                },
+                recordList: [],
+                recordModal: false,
+                recordSearch: {
+                    id: null,
+                    channel: 0,
+                    deviceId: null
+                },
+                context: {
+                    id: null,
+                    channel: 0,
+                    item: null,
+                },
+                columns: Object.freeze(
+                    [
+                        "设备号",
+                        "地址",
+                        "通道数",
+                        "注册时间",
+                        "更新时间",
+                        "状态",
+                    ].map((title) => ({
+                        title,
+                    }))
+                ),
+                columns2: Object.freeze([
+                    "通道编号",
+                    "名称",
+                    "厂商",
                     "地址",
-                    "通道数",
-                    "注册时间",
-                    "更新时间",
                     "状态",
-                ].map((title) => ({
-                    title,
-                }))
-            ),
-            columns2: Object.freeze([
-                "通道编号",
-                "名称",
-                "厂商",
-                "地址",
-                "状态",
-                "操作",
-            ]).map((title) => ({ title })),
-        };
-    },
-    created() {
-        this.fetchlist();
-    },
-    mounted() {
-        this.$parent.titleTabs = ["列表", "N路播放"];
-    },
-    methods: {
-        fetchlist() {
-            const listES = new EventSource(this.apiHost + "/gb28181/list");
-            listES.onmessage = (evt) => {
-                if (!evt.data) return;
-                this.Devices = JSON.parse(evt.data) || [];
-                this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));
-                let channelList = [];
-                this.Devices.forEach((device) => {
-                    const channels = device.Channels || [];
-                    if (channels.length > 0) {
-                        channelList = channelList.concat(channels);
-                    }
-                });
-                if (channelList.length > 0) {
-                    this.channelList = channelList;
-                    this.updatePageInfo(channelList.length);
-                }
+                    "操作",
+                ]).map((title) => ({title})),
             };
-            this.$once("hook:destroyed", () => listES.close());
         },
-        ptz(id, channel, item) {
-            this.context = {
-                id,
-                channel,
-                item,
-            };
-            this.previewStreamPath = true;
-            this.$nextTick(() =>
-                this.$refs.player.play("gb28181/" + item.DeviceID)
-            );
+        created() {
+            this.fetchlist();
+        },
+        mounted() {
+            this.$parent.titleTabs = ["列表", "N路播放"];
         },
-        sendPtz(options) {
-            const ptzCmd = getPTZCmd(options);
-            const ptzCmdStop = getPTZCmd({ type: PTZ_TYPE.stop });
-            this.ajax
-                .get("/gb28181/control", {
-                    id: this.context.id,
-                    channel: this.context.channel,
-                    ptzcmd: ptzCmd,
-                })
-                .then((x) => {
-                    if (
-                        options.type === PTZ_TYPE.stop ||
-                        options.cycle === true
-                    ) {
-                        return;
+        methods: {
+            fetchlist() {
+                const listES = new EventSource(this.apiHost + "/gb28181/list");
+                listES.onmessage = (evt) => {
+                    if (!evt.data) return;
+                    this.Devices = JSON.parse(evt.data) || [];
+                    this.Devices.sort((a, b) => (a.ID > b.ID ? 1 : -1));
+                    let channelList = [];
+                    let recordList = [];
+                    this.Devices.forEach((device) => {
+                        const channels = device.Channels || [];
+                        if (channels.length > 0) {
+                            channelList = channelList.concat(channels);
+                        }
+
+                        if (this.recordSearch.id && this.recordSearch.deviceId) {
+                            const channel = channels.filter((i) => {
+                                return i.DeviceID === this.recordSearch.deviceId && this.recordSearch.id === device.ID;
+                            });
+
+                            if (channel) {
+                                this.recordList = channel.Records || [];
+                            }
+                        }
+                    });
+                    if (channelList.length > 0) {
+                        this.channelList = channelList;
+                        this.updatePageInfo(channelList.length);
                     }
-                    setTimeout(() => {
-                        this.ajax.get("/gb28181/control", {
-                            id: this.context.id,
-                            channel: this.context.channel,
-                            ptzcmd: ptzCmdStop,
-                        });
-                    }, 500);
+                };
+                this.$once("hook:destroyed", () => listES.close());
+            },
+            ptz(id, channel, item) {
+                this.context = {
+                    id,
+                    channel,
+                    item,
+                };
+                this.previewStreamPath = true;
+                this.$nextTick(() =>
+                    this.$refs.player.play("gb28181/" + item.DeviceID)
+                );
+            },
+            sendPtz(options) {
+                const ptzCmd = getPTZCmd(options);
+                const ptzCmdStop = getPTZCmd({type: PTZ_TYPE.stop});
+                this.ajax
+                    .get("/gb28181/control", {
+                        id: this.context.id,
+                        channel: this.context.channel,
+                        ptzcmd: ptzCmd,
+                    })
+                    .then((x) => {
+                        if (
+                            options.type === PTZ_TYPE.stop ||
+                            options.cycle === true
+                        ) {
+                            return;
+                        }
+                        setTimeout(() => {
+                            this.ajax.get("/gb28181/control", {
+                                id: this.context.id,
+                                channel: this.context.channel,
+                                ptzcmd: ptzCmdStop,
+                            });
+                        }, 500);
+                    });
+            },
+
+
+            sendQueryRecords(options) {
+
+            },
+
+            handlePageChange(page) {
+                let showList = [];
+                const onePageSize = this.pageInfo.onePageSize;
+                const firstIndex = page * onePageSize - onePageSize;
+                const lastIndex = page * onePageSize - 1;
+                showList = this.channelList.filter((item, index) => {
+                    return index >= firstIndex && index <= lastIndex;
                 });
-        },
 
-        handlePageChange(page){
-            let showList = [];
-            const onePageSize = this.pageInfo.onePageSize;
-            const firstIndex = page * onePageSize - onePageSize;
-            const lastIndex = page * onePageSize - 1 ;
-            showList = this.channelList.filter((item, index) => {
-                return index >= firstIndex && index <= lastIndex;
-            });
+                this.channelShowList = showList;
+                if (showList.length > 0) {
+                    this.pageInfo.currentPage = page;
+                }
+            },
+            updatePageInfo(totalSize) {
+                const onePageSize = this.pageInfo.onePageSize;
+                let totalPage = totalSize / onePageSize;
 
-            this.channelShowList = showList;
-            if(showList.length > 0){
-                this.pageInfo.currentPage = page;
-            }
-        },
-        updatePageInfo(totalSize){
-            const onePageSize = this.pageInfo.onePageSize;
-            let totalPage = totalSize / onePageSize;
+                if (totalSize % onePageSize > 0) {
+                    totalPage = totalPage + 1;
+                }
+                this.pageInfo.totalPage = totalPage;
+                if (this.pageInfo.currentPage === 0) {
+                    this.handlePageChange(1)
+                }
+            },
+            invite(id, channel, item) {
+                this.ajax.get("/gb28181/invite", {id, channel}).then((x) => {
+                    item.Connected = true;
+                });
+            },
+            bye(id, channel, item) {
+                this.ajax.get("/gb28181/bye", {id, channel}).then((x) => {
+                    item.Connected = false;
+                });
+            },
 
-            if (totalSize % onePageSize > 0) {
-                totalPage = totalPage + 1;
-            }
-            this.pageInfo.totalPage = totalPage;
-            if(this.pageInfo.currentPage === 0){
-                this.handlePageChange(1)
+            getRecords(id, channel, item) {
+                this.recordSearch.id = id;
+                this.recordSearch.channel = channel;
+                this.recordSearch.deviceId = item.DeviceID;
+                this.recordModal = true;
+                this.$nextTick(() =>
+                    this.$refs.records.getList(this.recordSearch)
+                );
+            },
+
+            initRecordSearch() {
+                this.recordModal = false;
+                this.recordSearch.id = null;
+                this.recordSearch.channel = null;
+                this.recordSearch.deviceId = null;
+                this.recordList = [];
             }
         },
-        invite(id, channel, item) {
-            this.ajax.get("/gb28181/invite", { id, channel }).then((x) => {
-                item.Connected = true;
-            });
-        },
-        bye(id, channel, item) {
-            this.ajax.get("/gb28181/bye", { id, channel }).then((x) => {
-                item.Connected = false;
-            });
-        },
-    },
-};
+    };
 </script>
 <style scoped>
-.flex-box {
-    display: flex;
-    flex-flow: row wrap;
-    align-content: flex-start;
-}
+    .flex-box {
+        display: flex;
+        flex-flow: row wrap;
+        align-content: flex-start;
+    }
 
-.flex-item {
-    flex: 0 0 33.3333%;
-    height: 275px;
-    box-sizing: border-box;
-    padding: 10px;
-}
+    .flex-item {
+        flex: 0 0 33.3333%;
+        height: 275px;
+        box-sizing: border-box;
+        padding: 10px;
+    }
 </style>
diff --git a/ui/src/components/Records.vue b/ui/src/components/Records.vue
new file mode 100644
index 0000000..865656e
--- /dev/null
+++ b/ui/src/components/Records.vue
@@ -0,0 +1,159 @@
+<template>
+    <Modal v-bind="$attrs"
+           draggable
+           width="900"
+           v-on="$listeners"
+           title="Records"
+           @on-ok="onClosePreview"
+           @on-cancel="onClosePreview">
+        <div class="container">
+            <div class="search">
+                <DatePicker type="date" :options="timeOptions" :value="search.time" placeholder="请选择时间"
+                            style="width: 200px" :clearable="false"
+                            @change="handleTimeChange"></DatePicker>
+            </div>
+            <div>
+                <mu-data-table :columns="columns" :data="recordList">
+                    <template #expand="prop">
+                        <div>
+                            <m-button @click="play(prop.row)">播放</m-button>
+                        </div>
+                    </template>
+                    <template #default="scope">
+                        <td>{{scope.row.DeviceID}}</td>
+                        <td>{{scope.row.Name}}</td>
+                        <td>{{scope.row.time}}</td>
+                        <td>{{scope.row.length}}</td>
+                        <td>{{scope.row.FilePath}}</td>
+                        <td>{{scope.row.Address}}</td>
+                        <td>{{scope.row.Type}}</td>
+                    </template>
+                </mu-data-table>
+            </div>
+        </div>
+    </Modal>
+</template>
+
+<script>
+    import {getOneTimeRange, formatTimeTips, parseTime} from "../utils";
+
+    const _now = new Date();
+
+    export default {
+        name: "Records",
+        props: {
+            records: Array
+        },
+        data() {
+            return {
+                timeOptions: {
+                    disabledDate(date) {
+                        return date && date.valueOf() > Date.now();
+                    }
+                },
+                search: {
+                    id: null,
+                    channel: 0,
+                    deviceId: null,
+                    time: _now
+                },
+                columns: Object.freeze(
+                    [
+                        '设备ID',
+                        '名称',
+                        '时间',
+                        '时长',
+                        '文件路径',
+                        '地址',
+                        '类型'
+                    ].map((title) => ({
+                        title,
+                    }))
+                )
+            }
+        },
+        computed: {
+            startTime() {
+                if (!this.search.time) {
+                    return ''
+                }
+                const start = getOneTimeRange(this.search.time).start;
+                return new Date(start).toISOString();
+            },
+            endTime() {
+
+                if (!this.search.time) {
+                    return ''
+                }
+
+                const end = getOneTimeRange(this.search.time).end;
+                return new Date(end).toISOString();
+            },
+            recordList() {
+                const list = this.records.map((record) => {
+                    const startTime = new Date(record.StartTime).getTime();
+                    const endTime = new Date(record.EndTime).getTime();
+                    const timestamp = endTime - startTime;
+                    const timeLength = formatTimeTips(timestamp);
+
+                    const _startTime = parseTime(startTime);
+
+                    record.length = timeLength;
+                    record.time = _startTime;
+                    return record;
+                });
+                return list;
+            }
+        },
+
+        methods: {
+            getList(options) {
+                this.search.id = options.id;
+                this.search.channel = options.channel;
+                this.search.deviceId = options.deviceId;
+                this._fetchList();
+            },
+
+            _fetchList() {
+                if (this.search.id && this.search.channel && this.startTime && this.endTime) {
+                    const query = {
+                        id: this.search.id,
+                        channel: this.search.channel,
+                        startTime: this.search.startTime,
+                        endTime: this.search.endTime
+                    };
+
+                    this.ajax.get("/gb28181/query/records", query).then((x) => {
+
+                    });
+                }
+            },
+            onClosePreview() {
+                this.$emit('close');
+            },
+            handleTimeChange(date) {
+                this.search.time = date;
+                this._fetchList();
+            },
+            play() {
+
+            }
+        }
+    }
+</script>
+
+<style scoped>
+
+    .container {
+        position: relative;
+        height: 500px;
+        background-image: radial-gradient(#c52dd07a, #4a17987a, #0300137a);
+        color: #ffffff;
+        background-color: black;
+        overflow: auto;
+    }
+
+    .search {
+        padding: 10px 0;
+    }
+</style>
diff --git a/ui/src/utils/index.js b/ui/src/utils/index.js
new file mode 100644
index 0000000..47da030
--- /dev/null
+++ b/ui/src/utils/index.js
@@ -0,0 +1,119 @@
+/**
+ * Date:2020/12/24
+ * Desc:
+ */
+
+export function getOneTimeRange(time, options) {
+    let date;
+
+    // 都为空的时候
+    if (!time && !options) {
+        date = new Date();
+    } else if (Object.prototype.toString.call(time) !== '[object Date]' && time !== null && typeof time === 'object') {
+        // time 为 options 参数。
+        options = time;
+        date = new Date();
+    } else if (Object.prototype.toString.call(time) === '[object Date]') {
+        // time 是时间格式
+        date = time;
+    } else {
+        // time 是 int 格式。
+        if (('' + time).length === 10) time = parseInt(time) * 1000;
+        time = +time; // 转成int 型
+        date = new Date(time);
+    }
+
+    options = options || {};
+
+    let result = {
+        start: 0,
+        end: 0
+    };
+
+    let _startTime = new Date(date).setHours(options.startHour || 0, options.startMin || 0, 0, 0);
+    let _endTime = new Date(date).setHours(options.endHour || 23, options.endMin || 59, 59, 0);
+    result.start = new Date(_startTime).getTime();
+    result.end = new Date(_endTime).getTime();
+
+    return result;
+};
+
+
+export function formatTimestamp(t) {
+    var d = 0,
+        h = 0,
+        m = 0,
+        s = 0;
+    if (t > 0) {
+        d = Math.floor(t / 1000 / 3600 / 24)
+        h = Math.floor(t / 1000 / 60 / 60 % 24)
+        m = Math.floor(t / 1000 / 60 % 60)
+        s = Math.floor(t / 1000 % 60)
+    }
+
+    return `${d}天${h}时${m}分${s}秒`
+}
+
+export function formatTimeTips(timestamp) {
+    let result;
+
+    //
+    if (time > -1) {
+        let hour = Math.floor(timestamp / 3600);
+        let min = Math.floor(timestamp / 60) % 60;
+        let sec = timestamp % 60;
+
+        sec = Math.round(sec);
+
+        if (hour < 10) {
+            result = '0' + hour + ":";
+        } else {
+            result = hour + ":";
+        }
+
+        if (min < 10) {
+            result += "0";
+        }
+        result += min + ":";
+        if (sec < 10) {
+            result += "0";
+        }
+        result += sec.toFixed(0);
+    }
+
+    return result;
+}
+
+
+export function parseTime(time, cFormat) {
+    if (arguments.length === 0) {
+        return null
+    }
+    var format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
+    var date;
+    if (typeof time === 'object') {
+        date = time
+    } else {
+        if (('' + time).length === 10) time = parseInt(time) * 1000;
+        time = +time; // 转成int 型
+        date = new Date(time)
+    }
+    var formatObj = {
+        y: date.getFullYear(),
+        m: date.getMonth() + 1,
+        d: date.getDate(),
+        h: date.getHours(),
+        i: date.getMinutes(),
+        s: date.getSeconds(),
+        a: date.getDay()
+    };
+    var time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
+        var value = formatObj[key]
+        if (key === 'a') return ['一', '二', '三', '四', '五', '六', '日'][value - 1]
+        if (result.length > 0 && value < 10) {
+            value = '0' + value
+        }
+        return value || 0
+    });
+    return time_str
+}