RegisterAudioFrameObserver

Registers an audio frame observer object.

Details

Call this method to register an audio frame observer object (register a callback). When you need the SDK to trigger FOnMixedAudioFrame, FOnRecordAudioFrame, FOnPlaybackAudioFrame or FOnEarMonitoringAudioFrame callback, you need to use this method to register the callbacks.

Attention: Ensure that you call this method before joining a channel.

Parameters

observer

The observer instance. See IAudioFrameObserver. Set the value as NULL to release the instance. Agora recommends calling this method after receiving FOnLeaveChannel to release the audio observer object.

Returns

  • 0: Success.
  • < 0: Failure.