seek method

@override Future<void> seek(Duration position)

Moves the playhead.

The seek is accurate to the sample on WAV, and to approximately 26 ms on MP3. An MP3 seek goes to a frame boundary and then decodes forward.

The session erases the frames that the ring queued ahead of the playhead. Therefore, the device gets a few milliseconds of silence, and not a few milliseconds of audio from the old position.

Implementation

@override
Future<void> seek(Duration position) async {
  if (_disposed) throw StateError('This playback session was disposed.');

  seeks.add(position);
  _position = position < Duration.zero
      ? Duration.zero
      : (position > duration ? duration : position);
}