https://github.com/desktopgame/next_synth_midi

https://github.com/desktopgame/next_synth_midi

dart flutter midi

Last synced: about 2 months ago
JSON representation

• Host: GitHub
• URL: https://github.com/desktopgame/next_synth_midi
• Owner: desktopgame
• License: mit
• Created: 2021-01-16T06:52:43.000Z (over 5 years ago)
• Default Branch: main
• Last Pushed: 2021-02-21T07:35:59.000Z (over 5 years ago)
• Last Synced: 2025-02-23T23:28:35.468Z (over 1 year ago)
• Topics: dart, flutter, midi
• Language: Kotlin
• Homepage:
• Size: 33.2 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
# next_synth_midi

MIDI機能を使用するためのネイティブライブラリ

## example

MIDI端末を列挙して、最初に見つかった端末にノートオン,ノートオフを送信する

````.dart

Future sendMidiMessage() async {

  int deviceCount = await NextSynthMidi.deviceCount;

  bool opened = false;

  print("deviceCount= ${deviceCount}");

  for (int i = 0; i < deviceCount; i++) {

    String name = await NextSynthMidi.getDeviceName(i);

    int inputs = await NextSynthMidi.getInputPortCount(i);

    int outputs = await NextSynthMidi.getOutputPortCount(i);

    print("name=${name} inputs=${inputs} outputs=${outputs}");

    for (int j = 0; j < inputs + outputs; j++) {

      int port = await NextSynthMidi.getPortNumber(i, j);

      bool isInput = await NextSynthMidi.isInputPort(i, j);

      bool isOutput = await NextSynthMidi.isOutputPort(i, j);

      print("[$j] port=${port} isInput=${isInput} isOutput=${isOutput}");

      if (isOutput && !opened) {

        await NextSynthMidi.openPort(i, port, -1);

        await NextSynthMidi.waitForOpen(i, port, -1);

        await NextSynthMidi.send(i, port, Uint8List.fromList([0x90, 60, 127]), 0, 3);

        await Future.delayed(new Duration(seconds: 3));

        await NextSynthMidi.send(i, port, Uint8List.fromList([0x90, 60, 0]), 0, 3);

        var n = await NextSynthMidi.closePort(i, port, -1);

        print("send! $n");

      }

    }

  }

}

````