raw_sound

A flutter plugin for playing raw PCM audio data (16-bit integer and 32-bit float).

Platform Support

Usage

• Create an instance of the RawSoundPlayer

  final _player = RawSoundPlayer();

• Initialize the player instance with parameters of bufferSize, nChannels, sampleRate and pcmType

  await _player.initialize(
    // Buffer size of the underlying audio track (Android only)
    bufferSize: 4096 << 3,
    // Number of channels, either 1 or 2
    nChannels: 1,
    // Sample rate for playback in Hz
    sampleRate: 16000,
    // PCM format type, either PCMI16 (16-bit integer) or PCMF32 (32-bit float)
    pcmType: RawSoundPCMType.PCMI16,
  );

• Start the playback

  await _player.play();

• Feed the player instance with the raw PCM data

  // Demonstrate how to continuously feed the player until the playback is paused/stopped
  while (_player.isPlaying) {
    await _player.feed(dataBlock);
  }

• Pause the playback

  // Pause immediately and keep queued buffers
  await _player.pause();

• Stop the playback

  // Stop immediately and drop queued buffers
  await _player.stop();

• Release the player instance

  // Remember to release any initialized player instances
  await _player.release();