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webrtc VideoSendStream/VideoReceiveStream procedure
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| VideoSendStream | |
| VideoSendStreamImpl::VideoSendStreamImpl | |
| video_stream_encoder_->SetSink register VideoSendStreamImpl::OnEncodedImage callback (output) | |
| VideoSendStream::SetSource | |
| video_stream_encoder_->SetSource(source, degradation_preference); | |
| register rtc::VideoSourceInterface<VideoFrame>* source (input) | |
| VideoStreamEncoder procedure | |
| OnFrame: encoder_queue_.PostTask(EncodeTask) | |
| in task: EncodeVideoFrame() video_sender_.AddVideoFrame(frame) | |
| call encoder, do encode and callback OnEncodedImage | |
| VideoSendStream | |
| OnEncodedImage callback: -> ... -> PacedSender::InsertPacket |
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