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In the previous WebRTC series – iOS video capture (1)
VideoStreamEncoder
article, the call process from the camera to the medium video stream and the processing of the video stream were introduced ;
this article will introduce the encapsulation of the H264 encoder by WebRTC on the iOS side, And
VideoStreamEncoder
the process of returning the encoded frame from the video stream to the hardware encoding encoding to the current class;
1. H264 encapsulation of iOS by WebRTC
1.1 Main configuration
The files in sdk/objc/components/video_codec/the directory RTCVideoEncoderH264are the encapsulation of the iOS encoding interface VTCompressionSessionRef;
at the same time, this class implements the protocol RTCVideoEncoder, which defines the main interface:
@protoc