enableAlphaChannelVideoEncode method

FutureOr<int> enableAlphaChannelVideoEncode(ByteRTCAlphaLayout alphaLayout)

@hidden(macOS) @valid since 3.58 @detail api @hiddensdk(audiosdk) @region Video Management @author zhuhongshuyu @brief Enables the Alpha channel encoding feature for custom capture video frames.
Suitable for scenarios where the video subject needs to be separated from the background at the push-streaming end, and the background can be custom rendered at the receive-streaming end. @param alphaLayout The arrangement position of the separated Alpha channel relative to the RGB channel information. Currently, only ByteRTCAlphaLayout.ByteRTCAlphaLayoutTop is supported, which is positioned above the RGB channel information. @return - 0: Success. - < 0 : Fail. See ByteRTCReturnStatus{@link #ByteRTCReturnStatus} for more details. @note - This API only applies to custom capture video frames that use ByteRTCVideoPixelFormat.ByteRTCVideoPixelFormatCVPixelBuffer. - This API must be called before publishing the video stream. - After enabling Alpha channel encoding with this API, you need to call pushExternalVideoFrame:{@link #ByteRTCEngine#pushExternalVideoFrame} to push custom captured video frames to the RTC SDK. If a video frame format that is not supported is pushed, the call to pushExternalVideoFrame:{@link #ByteRTCEngine#pushExternalVideoFrame} will return the error code ByteRTCReturnStatus.ByteRTCReturnStatusParameterErr.

Implementation

FutureOr<int> enableAlphaChannelVideoEncode(
    ByteRTCAlphaLayout alphaLayout) async {
  return await nativeCall(
      'enableAlphaChannelVideoEncode:', [alphaLayout.$value]);
}