webrtc-m79-webrtc:::VideoRtpReceiver 中的 media_channel_的设置

hclbeloved

于 2021-07-08 08:35:38 发布

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分类专栏： webrtc

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1 代码

//unified plan 会进入到这里 
//音频和视频都有各自的 RtpTransceiver
RTCError PeerConnection::UpdateTransceiverChannel(
    rtc::scoped_refptr<RtpTransceiverProxyWithInternal<RtpTransceiver>>
        transceiver,
    const cricket::ContentInfo& content,
    const cricket::ContentGroup* bundle_group) {
  RTC_DCHECK(IsUnifiedPlan());
  RTC_DCHECK(transceiver);
  cricket::ChannelInterface* channel = transceiver->internal()->channel();
  if (content.rejected) {
    if (channel) {
      transceiver->internal()->SetChannel(nullptr);
      DestroyChannelInterface(channel);
    }
  } else {
    if (!channel) {
      if (transceiver->media_type() == cricket::MEDIA_TYPE_AUDIO) {
        channel = CreateVoiceChannel(content.