startAudioDataObserver method

Future<void> startAudioDataObserver(
  1. int observerBitMask,
  2. ZegoAudioFrameParam param
)

Enable audio data observering.

Available since: 1.1.0 Description: When custom audio processing is turned on, use this function to turn on audio data callback monitoring. Use cases: When develop need to monitor the original audio. When to call: After creating the engine. Restrictions: Audio monitoring is triggered only after this function has been called and the callback has been set by calling setAudioDataHandler. If you want to enable the onPlayerAudioData callback, you must also be in the pull stream, and the incoming sampling rate of the startAudioDataObserver function is not supported at 8000Hz, 22050Hz, and 24000Hz. Caution: This api will start the media engine and occupy the microphone device.

  • observerBitMask The callback function bitmask marker for receive audio data, refer to enum ZegoAudioDataCallbackBitMask, when this param converted to binary, 0b01 that means 1 << 0 for triggering onCapturedAudioData, 0x10 that means 1 << 1 for triggering onPlaybackAudioData, 0x100 that means 1 << 2 for triggering onMixedAudioData, 0x1000 that means 1 << 3 for triggering onPlayerAudioData. The masks can be combined to allow different callbacks to be triggered simultaneously.
  • param param of audio frame.

Implementation

Future<void> startAudioDataObserver(
    int observerBitMask, ZegoAudioFrameParam param) async {
  return await ZegoExpressImpl.instance
      .startAudioDataObserver(observerBitMask, param);
}