open method

Future<int?> open(string filePath, MediaPlayerConfig config)

@detail api @brief Open the audio file.
You can only open one audio file with one player instance at the same time. For multiple audio files at the same time, create multiple player instances.
For audio file in PCM format, see openWithCustomSource{@link #IMediaPlayer#openWithCustomSource}. openWithCustomSource and this API are mutually exclusive. @param filePath Audio file paths.
URL of online file, URI of local file, full path to local file, or path to local file starting with /assets/ are supported. For URL of online file, only the https protocol is supported.
Recommended sample rate for audio effect files: 8KHz、16KHz、22.05KHz、44.1KHz、48KHz.
Local audio effect file formats supported by different platforms:

	mp3	mp4	aac	m4a	3gp	wav	ogg	ts	wma
Android	Y	Y	Y	Y	Y	Y	Y
iOS/macOS	Y	Y	Y	Y	Y	Y
Windows	Y	Y	Y	Y	Y	Y		Y	Y

Online audio effect file formats supported by different platforms.

	mp3	mp4	aac	m4a	3gp	wav	ogg	ts	wma
Android	Y		Y	Y	Y	Y
iOS/macOS	Y		Y	Y		Y
Windows	Y		Y	Y	Y	Y		Y	Y

@param config See MediaPlayerConfig{@link #MediaPlayerConfig}. @return - 0: Success. - < 0 : Fail. See ReturnStatus{@link #ReturnStatus} for more details.

Implementation

Future<int?> open(string filePath, MediaPlayerConfig config) async {
  $a() => ($instance as $p_a.IMediaPlayer)
      .open(filePath, unpackObject<$p_a.MediaPlayerConfig>(config));
  $i() => ($instance as $p_i.ByteRTCMediaPlayer)
      .open(filePath, unpackObject<$p_i.ByteRTCMediaPlayerConfig>(config));

  if (Platform.isAndroid) {
    return $a();
  } else if (Platform.isIOS) {
    return $i();
  } else {
    throw UnsupportedError(
        'Not Support Platform ${Platform.operatingSystem}');
  }
}