openAudioDevice method

OpenAudioDevice openAudioDevice({ AudioDevice? device, bool? isCapture, AudioSpec? settings, })

Open an audio device.

If device is null, then the default device will be opened,.

If isCapture is null, then device.isCapture will be used.

SDL Docs

Implementation

OpenAudioDevice openAudioDevice({
  final AudioDevice? device,
  final bool? isCapture,
  final AudioSpec? settings,
}) {
  var capture = isCapture;
  Pointer<Char> namePointer;
  if (device != null) {
    if (capture == null) {
      capture = device.isCapture;
      namePointer = device.name.toCharPointer();
    } else {
      throw SdlError(
        -1,
        'You must specify either `device` or `isCapture`, but not both.',
      );
    }
  } else {
    if (capture == null) {
      throw SdlError(
        -1,
        'When `device == null`, `isCapture` must be specified.',
      );
    } else {
      namePointer = nullptr;
    }
  }
  if (settings != null) {
    _audioSpecDesiredPointer.ref
      ..channels = settings.channels
      ..format = settings.audioFormat
      ..freq = settings.freq
      ..samples = settings.samples
      ..silence = settings.silence
      ..size = settings.size;
  }
  final id = checkReturnValue(
    sdl.SDL_OpenAudioDevice(
      namePointer,
      boolToValue(capture),
      _audioSpecDesiredPointer,
      _audioSpecObtainedPointer,
      0,
    ),
  );
  if (id <= 0) {
    throw SdlError(id, getError());
  }
  final spec = AudioSpec.fromPointer(_audioSpecObtainedPointer);
  malloc.free(namePointer);
  return OpenAudioDevice(this, device, id, spec);
}