Use pushVideoFrame special card

[Nuyoahhjh]

Version of the agora_rtc_engine

6.3.2

Platforms affected

• Android
• iOS
• macOS
• Windows
• Web

Steps to reproduce

1, onCaptureVideoFrame to obtain the original data,
2. Push yuv through pushVideoFrame
code:`
_videoFrameObserver = VideoFrameObserver(
onCaptureVideoFrame: (sourceType, videoFrame) {
// print(
// 'Captured video frame from $sourceType size: ${videoFrame.width}x${videoFrame.height} y: ${videoFrame.yBuffer?.length} u:${videoFrame.uBuffer?.length} v:${videoFrame.vBuffer?.length}');
if (!isJoined) {
return;
}
if (videoFrame.yBuffer != null &&
videoFrame.uBuffer != null &&
videoFrame.vBuffer != null &&
videoFrame.width != null &&
videoFrame.height != null) {
// 创建一个新缓冲区来存储拼接后的数据
final int totalLength = videoFrame.yBuffer!.length +
videoFrame.uBuffer!.length +
videoFrame.vBuffer!.length;
final Uint8List yuvBuffer = Uint8List(totalLength);

      // 拼接缓冲区数据
      yuvBuffer.setRange(
          0, videoFrame.yBuffer!.length, videoFrame.yBuffer!);
      yuvBuffer.setRange(
          videoFrame.yBuffer!.length,
          videoFrame.yBuffer!.length + videoFrame.uBuffer!.length,
          videoFrame.uBuffer!);
      yuvBuffer.setRange(
          videoFrame.yBuffer!.length + videoFrame.uBuffer!.length,
          totalLength,
          videoFrame.vBuffer!);
      
      _engine.getMediaEngine().pushVideoFrame(
            frame: ExternalVideoFrame(
              type: VideoBufferType.videoBufferArray,
              format: VideoPixelFormat.videoPixelNv12,
              buffer: yuvBuffer,
              stride: videoFrame.width!,
              height: videoFrame.height!,
              timestamp: videoFrame.renderTimeMs,
            ),
          );
    }
  },
);

`

Expected results

Local preview screen change card
High CPU usage

Actual results

Local preview screen change card
High CPU usage

Code sample

Code sample

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Screenshots or Video

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Logs

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[littleGnAl]

Why do you need to get the video raw data from the SDK, and then push it back?

[Nuyoahhjh]

I need a usb compatible camera here

[Nuyoahhjh]

@littleGnAl

[littleGnAl]

I think if you can get the raw data from the onCaptureVideoFrame , it can be previewed with AgoraVideoView or published using the joinChannel function.

[Nuyoahhjh]

I think pushVideoFrame is pushing data to the remote end

[littleGnAl]

You can use joinChannel to publish it to remote users.