onProcessCapturedAudioData method

void onProcessCapturedAudioData(
  1. Uint8List data,
  2. int dataLength,
  3. ZegoAudioFrameParam param,
  4. double timestamp,
)

Custom audio processing local captured PCM audio frame callback.

Available: Since 2.13.0 Description: In this callback, you can receive the PCM audio frames captured locally after used headphone monitor. Developers can modify the audio frame data, as well as the audio channels and sample rate. The timestamp can be used for data synchronization, such as lyrics, etc. If you need the data after used headphone monitor, please use the onProcessCapturedAudioDataAfterUsedHeadphoneMonitor callback. When to trigger: You need to call enableCustomAudioCaptureProcessing to enable the function first, and call startPreview or startPublishingStream to trigger this callback function. Restrictions: None. Caution: This callback is a high-frequency callback, please do not perform time-consuming operations in this callback.

  • data Audio data in PCM format.
  • dataLength Length of the data.
  • param Parameters of the audio frame.
  • timestamp The audio frame timestamp, starting from 0 when capture is started, the unit is milliseconds.

Implementation

void onProcessCapturedAudioData(
  Uint8List data,
  int dataLength,
  ZegoAudioFrameParam param,
  double timestamp,
) {}