IZegoAudioMixingHandler

Declared in callback/IZegoAudioMixingHandler.java

public ZegoAudioMixingData onAudioMixingCopyData(int expectedDataLength)

Audio mixing callback.

Declared in callback/IZegoAudioMixingHandler.java

Parameters

Name	Type	Description
expectedDataLength	int	Expected length of incoming audio mixing data.

Details

The callback for copying audio data to the SDK for audio mixing. This function should be used together with [enableAudioMixing].

Use cases: Developers can use this function when they need to mix their own songs, sound effects or other audio data into the publishing stream. When to trigger: It will triggered after [createEngine], and call [enableAudioMixing] turn on audio mixing, and call [setAudioMixingHandler] set audio mixing callback handler.
Caution: This callback is a high frequency callback. To ensure the quality of the mixing data, please do not handle time-consuming operations in this callback.

Available since: 1.9.0
Restrictions: Supports 16k 32k 44.1k 48k sample rate, mono or dual channel, 16-bit deep PCM audio data.

Return

The audio data provided by the developer that is expected to be mixed into the publishing stream.