/** Listens for the {@link agora_gaming_rtc.AudioRawDataManager.OnPlaybackAudioFrameHandler OnPlaybackAudioFrameHandler} delegate.
*
* @note
* - Call this method before calling {@link agora_gaming_rtc.AudioRawDataManager.RegisterAudioRawDataObserver RegisterAudioRawDataObserver}.
* - If you want to unregister the `OnPlaybackAudioFrameHandler` delegate, call {@link agora_gaming_rtc.AudioRawDataManager.UnRegisterAudioRawDataObserver UnRegisterAudioRawDataObserver} before calling this method, and set `action` as `null` when calls this method.
*
* @param action The implementation of the `OnPlaybackAudioFrameHandler` delegate.
*
* @return
* - 0: Success.
* - < 0: Failure.
*/
public override int SetOnPlaybackAudioFrameCallback(OnPlaybackAudioFrameHandler action)
{
if (_irtcEngine == null)
{
return((int)ERROR_CODE.ERROR_NOT_INIT_ENGINE);
}
if (action == null)
{
OnPlaybackAudioFrame = null;
IRtcEngineNative.initEventOnPlaybackAudioFrame(null);
}
else
{
OnPlaybackAudioFrame = action;
IRtcEngineNative.initEventOnPlaybackAudioFrame(OnPlaybackAudioFrameCallback);
}
return((int)ERROR_CODE.ERROR_OK);
}