start method

Future<void> start()

change player's state to FState.started

throw StateError if call this method on invalid state. see fstate zh for details

Implementation

Future<void> start() async {
  await _nativeSetup.future;
  if (state == FState.initialized) {
    _callId += 1;
    int cid = _callId;
    FLog.i("$this invoke prepareAsync and start #$cid");
    await setOption(FOption.playerCategory, "start-on-prepared", 1);
    await _channel.invokeMethod("prepareAsync");
    FLog.i("$this invoke prepareAsync and start #$cid -> done");
  } else if (state == FState.asyncPreparing ||
      state == FState.prepared ||
      state == FState.paused ||
      state == FState.started ||
      value.state == FState.completed) {
    final resumePosition = state == FState.paused
        ? _validResumePosition(_explicitPausePosition)
        : null;
    if (resumePosition != null) {
      FLog.i("$this invoke start from $resumePosition");
    } else {
      FLog.i("$this invoke start");
    }
    await _channel.invokeMethod("start", <String, dynamic>{
      if (resumePosition != null)
        "resumePosition": resumePosition.inMilliseconds,
    });
    _explicitPausePosition = null;
  } else {
    FLog.e("$this invoke start invalid state:$state");
    return Future.error(StateError("call start on invalid state $state"));
  }
}