feat: expose iptc and xmp in metadata if available

lovell · Dec 28, 2017 · 61f7590 · 61f7590
1 parent 358b8fe
commit 61f7590
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Showing 2 changed files with 35 additions and 1 deletion.
diff --git a/src/metadata.cc b/src/metadata.cc
@@ -81,6 +81,22 @@ class MetadataWorker : public Nan::AsyncWorker {
         memcpy(baton->icc, icc, iccLength);
         baton->iccLength = iccLength;
       }
+      // IPTC
+      if (image.get_typeof(VIPS_META_IPCT_NAME) == VIPS_TYPE_BLOB) {
+        size_t iptcLength;
+        void const *iptc = image.get_blob(VIPS_META_ICC_NAME, &iptcLength);
+        baton->iptc = static_cast<char *>(g_malloc(iptcLength));
+        memcpy(baton->iptc, iptc, iptcLength);
+        baton->iptcLength = iptcLength;
+      }
+      // XMP
+      if (image.get_typeof(VIPS_META_XMP_NAME) == VIPS_TYPE_BLOB) {
+        size_t xmpLength;
+        void const *xmp = image.get_blob(VIPS_META_ICC_NAME, &xmpLength);
+        baton->xmp = static_cast<char *>(g_malloc(xmpLength));
+        memcpy(baton->xmp, xmp, xmpLength);
+        baton->xmpLength = xmpLength;
+      }
     }
 
     // Clean up
@@ -123,6 +139,16 @@ class MetadataWorker : public Nan::AsyncWorker {
           New("icc").ToLocalChecked(),
           Nan::NewBuffer(baton->icc, baton->iccLength, sharp::FreeCallback, nullptr).ToLocalChecked());
       }
+      if (baton->iptcLength > 0) {
+        Set(info,
+          New("iptc").ToLocalChecked(),
+          Nan::NewBuffer(baton->iptc, baton->iptcLength, sharp::FreeCallback, nullptr).ToLocalChecked());
+      }
+      if (baton->xmpLength > 0) {
+        Set(info,
+          New("xmp").ToLocalChecked(),
+          Nan::NewBuffer(baton->xmp, baton->xmpLength, sharp::FreeCallback, nullptr).ToLocalChecked());
+      }
       argv[1] = info;
     }
 

diff --git a/src/metadata.h b/src/metadata.h
@@ -38,6 +38,10 @@ struct MetadataBaton {
   size_t exifLength;
   char *icc;
   size_t iccLength;
+  char *iptc;
+  size_t iptcLength;
+  char *xmp;
+  size_t xmpLength;
   std::string err;
 
   MetadataBaton():
@@ -52,7 +56,11 @@ struct MetadataBaton {
     exif(nullptr),
     exifLength(0),
     icc(nullptr),
-    iccLength(0) {}
+    iccLength(0),
+    iptc(nullptr),
+    iptcLength(0),
+    xmp(nullptr),
+    xmpLength(0) {}
 };
 
 NAN_METHOD(metadata);