Merge pull request #37 from kNoAPP/velocity

Adds support for Velocity parameter

README.md

@@ -44,6 +44,8 @@ Play and Stop the Midi Notes
 
 ```dart
  FlutterMidi.playMidiNote(midi: 60);
+ FlutterMidi.playMidiNote(midi: 60, velocity: 120);
 
  FlutterMidi.stopMidiNote(midi: 60);
+ FlutterMidi.stopMidiNote(midi: 60, velocity: 120);
 ```

android/src/main/java/com/appleeducate/fluttermidi/FlutterMidiPlugin.java

@@ -94,18 +94,20 @@ public void onMethodCall(MethodCall call, Result result) {
       }
     } else if (call.method.equals("play_midi_note")) {
       int _note = call.argument("note");
+      int _velocity = call.argument("velocity");
       try {
         ShortMessage msg = new ShortMessage();
-        msg.setMessage(ShortMessage.NOTE_ON, 0, _note, 127);
+        msg.setMessage(ShortMessage.NOTE_ON, 0, _note, _velocity);
         recv.send(msg, -1);
       } catch (InvalidMidiDataException e) {
         e.printStackTrace();
       }
     } else if (call.method.equals("stop_midi_note")) {
       int _note = call.argument("note");
+      int _velocity = call.argument("velocity");
       try {
         ShortMessage msg = new ShortMessage();
-        msg.setMessage(ShortMessage.NOTE_OFF, 0, _note, 127);
+        msg.setMessage(ShortMessage.NOTE_OFF, 0, _note, _velocity);
         recv.send(msg, -1);
       } catch (InvalidMidiDataException e) {
         e.printStackTrace();

ios/Classes/AudioUnitMIDISynth.swift

@@ -276,7 +276,7 @@ class AudioUnitMIDISynth: NSObject {
 //
 
     /// Send a note on message using patch2 on channel 0
-    func playPitch(midi: Int) {
+    func playPitch(midi: Int, velocity: Int) {
 
         let channel = UInt32(0)
         let noteCommand = UInt32(0x90 | channel)
@@ -285,16 +285,16 @@ class AudioUnitMIDISynth: NSObject {
 
         status = MusicDeviceMIDIEvent(self.midisynthUnit!, pcCommand, patch2, 0, 0)
         AudioUtils.CheckError(status)
-        status = MusicDeviceMIDIEvent(self.midisynthUnit!, noteCommand, UInt32(midi), 64, 0)
+        status = MusicDeviceMIDIEvent(self.midisynthUnit!, noteCommand, UInt32(midi), UInt32(velocity), 0)
         AudioUtils.CheckError(status)
     }
 
     /// Send a note off message using patch2 on channel 0
-    func stopPitch(midi: Int) {
+    func stopPitch(midi: Int, velocity: Int) {
         let channel = UInt32(0)
         let noteCommand = UInt32(0x80 | channel)
         var status = OSStatus(noErr)
-        status = MusicDeviceMIDIEvent(self.midisynthUnit!, noteCommand, UInt32(midi), 0, 0)
+        status = MusicDeviceMIDIEvent(self.midisynthUnit!, noteCommand, UInt32(midi), UInt32(velocity), 0)
         AudioUtils.CheckError(status)
     }
 

ios/Classes/SwiftFlutterMidiPlugin.swift

@@ -42,13 +42,15 @@ public class SwiftFlutterMidiPlugin: NSObject, FlutterPlugin {
       case "play_midi_note":
         _arguments = call.arguments as! [String : Any];
         let midi = _arguments["note"] as? Int
-        au.playPitch(midi:  midi ?? 60)
+        let velocity = _arguments["velocity"] as? Int
+        au.playPitch(midi: midi ?? 60, velocity: velocity ?? 64)
         let message = "Playing: \(String(describing: midi!))"
         result(message)
       case "stop_midi_note":
-      _arguments = call.arguments as! [String : Any];
-       let midi = _arguments["note"] as? Int
-      au.stopPitch(midi:  midi ?? 60)
+        _arguments = call.arguments as! [String : Any];
+        let midi = _arguments["note"] as? Int
+        let velocity = _arguments["velocity"] as? Int
+      au.stopPitch(midi: midi ?? 60, velocity: velocity ?? 64)
         let message = "Stopped: \(String(describing: midi!))"
         result(message)
       default:

lib/flutter_midi.dart

@@ -45,7 +45,7 @@ class FlutterMidi extends FlutterMidiPlatform {
     return result;
   }
 
-  /// Unmute the device temporarly even if the mute switch is on or toggled in settings.
+  /// Unmute the device temporarily even if the mute switch is on or toggled in settings.
   @override
   Future<String> unmute() async {
     final String result = await _channel.invokeMethod('unmute');
@@ -54,16 +54,30 @@ class FlutterMidi extends FlutterMidiPlatform {
 
   /// Use this when stopping the sound onTouchUp or to cancel a long file.
   /// Not needed if playing midi onTap.
+  /// Stop with velocity in the range between 0-127
   @override
-  Future<String?> stopMidiNote({required int midi}) async {
-    return _channel.invokeMethod('stop_midi_note', {'note': midi});
+  Future<String?> stopMidiNote({
+    required int midi,
+    int velocity = 64,
+  }) async {
+    return _channel.invokeMethod('stop_midi_note', {
+      'note': midi,
+      'velocity': velocity,
+    });
   }
 
   /// Play a midi note from the sound_font.SF2 library bundled with the application.
-  /// Play a midi note in the range between 0-256
+  /// Play a midi note in the range between 0-127
+  /// Play with velocity in the range between 0-127
   /// Multiple notes can be played at once as separate calls.
   @override
-  Future<String?> playMidiNote({required int midi}) async {
-    return _channel.invokeMethod('play_midi_note', {'note': midi});
+  Future<String?> playMidiNote({
+    required int midi,
+    int velocity = 64,
+  }) async {
+    return _channel.invokeMethod('play_midi_note', {
+      'note': midi,
+      'velocity': velocity,
+    });
   }
 }

lib/src/method_channel.dart

@@ -41,20 +41,30 @@ class MethodChannelUrlLauncher extends FlutterMidiPlatform {
 
   /// Use this when stopping the sound onTouchUp or to cancel a long file.
   /// Not needed if playing midi onTap.
+  /// Stop with velocity in the range between 0-127
   @override
   Future<String?> stopMidiNote({
     required int midi,
+    int velocity = 64,
   }) {
-    return _channel.invokeMethod<String>('stop_midi_note', {'note': midi});
+    return _channel.invokeMethod<String>('stop_midi_note', {
+      'note': midi,
+      'velocity': velocity,
+    });
   }
 
   /// Play a midi note from the sound_font.SF2 library bundled with the application.
-  /// Play a midi note in the range between 0-256
+  /// Play a midi note in the range between 0-127
+  /// Play with velocity in the range between 0-127
   /// Multiple notes can be played at once as separate calls.
   @override
   Future<String?> playMidiNote({
     required int midi,
+    int velocity = 64,
   }) {
-    return _channel.invokeMethod<String>('play_midi_note', {'note': midi});
+    return _channel.invokeMethod<String>('play_midi_note', {
+      'note': midi,
+      'velocity': velocity,
+    });
   }
 }

lib/src/platform_interface.dart

@@ -35,24 +35,28 @@ class FlutterMidiPlatform extends PlatformInterface {
     throw UnimplementedError('changeSound() has not been implemented.');
   }
 
-  /// Unmute the device temporarly even if the mute switch is on or toggled in settings.
+  /// Unmute the device temporarily even if the mute switch is on or toggled in settings.
   Future<String?> unmute() async {
     throw UnimplementedError('canLaunch() has not been implemented.');
   }
 
   /// Use this when stopping the sound onTouchUp or to cancel a long file.
   /// Not needed if playing midi onTap.
+  /// Stop with velocity in the range between 0-127
   Future<String?> stopMidiNote({
     required int midi,
+    int velocity = 64,
   }) async {
     throw UnimplementedError('stopMidiNote() has not been implemented.');
   }
 
   /// Play a midi note from the sound_font.SF2 library bundled with the application.
-  /// Play a midi note in the range between 0-256
-  /// Multiple notes can be played at once as seperate calls.
+  /// Play a midi note in the range between 0-127
+  /// Play with velocity in the range between 0-127
+  /// Multiple notes can be played at once as separate calls.
   Future<String?> playMidiNote({
     required int midi,
+    int velocity = 64,
   }) async {
     throw UnimplementedError('playMidiNote() has not been implemented.');
   }

macos/Classes/AudioUnitMIDISynth.swift

@@ -276,7 +276,7 @@ class AudioUnitMIDISynth: NSObject {
 //
 
     /// Send a note on message using patch2 on channel 0
-    func playPitch(midi: Int) {
+    func playPitch(midi: Int, velocity: Int) {
 
         let channel = UInt32(0)
         let noteCommand = UInt32(0x90 | channel)
@@ -285,16 +285,16 @@ class AudioUnitMIDISynth: NSObject {
 
         status = MusicDeviceMIDIEvent(self.midisynthUnit!, pcCommand, patch2, 0, 0)
         // AudioUtils.CheckError(status)
-        status = MusicDeviceMIDIEvent(self.midisynthUnit!, noteCommand, UInt32(midi), 64, 0)
+        status = MusicDeviceMIDIEvent(self.midisynthUnit!, noteCommand, UInt32(midi), UInt32(velocity), 0)
         // AudioUtils.CheckError(status)
     }
 
     /// Send a note off message using patch2 on channel 0
-    func stopPitch(midi: Int) {
+    func stopPitch(midi: Int, velocity: Int) {
         let channel = UInt32(0)
         let noteCommand = UInt32(0x80 | channel)
         var status = OSStatus(noErr)
-        status = MusicDeviceMIDIEvent(self.midisynthUnit!, noteCommand, UInt32(midi), 0, 0)
+        status = MusicDeviceMIDIEvent(self.midisynthUnit!, noteCommand, UInt32(midi), UInt32(velocity), 0)
         // AudioUtils.CheckError(status)
     }
 

macos/Classes/FlutterMidiPlugin.swift

@@ -42,13 +42,15 @@ public class FlutterMidiPlugin: NSObject, FlutterPlugin {
       case "play_midi_note":
         _arguments = call.arguments as! [String : Any];
         let midi = _arguments["note"] as? Int
-        au.playPitch(midi:  midi ?? 60)
+        let velocity = _arguments["velocity"] as? Int
+        au.playPitch(midi: midi ?? 60, velocity: velocity ?? 64)
         let message = "Playing: \(String(describing: midi!))"
         result(message)
       case "stop_midi_note":
-      _arguments = call.arguments as! [String : Any];
-       let midi = _arguments["note"] as? Int
-      au.stopPitch(midi:  midi ?? 60)
+        _arguments = call.arguments as! [String : Any];
+        let midi = _arguments["note"] as? Int
+        let velocity = _arguments["velocity"] as? Int
+      au.stopPitch(midi: midi ?? 60, velocity: velocity ?? 64)
         let message = "Stopped: \(String(describing: midi!))"
         result(message)
       default: