- 针对SDP里的m= 做的逻辑代码
- 根据SDP反映到sender和receivers ,并关联到内部的cricket::ChannelInterface 。
- 文档说: 管理着 RtpSenders, RtpReceivers, and BaseChannel 与m=
- 例如:当SDP的 m= 变化时,RtpTransceiver 可以控制 senders和 receivers 与 channel 关联发生变化,比如add stop
RtpTransceiver 父类是一个interface,且共有继承了rtc::RefCountInterface
- api\rtp_transceiver_interface.h
同时支持planB 和 unified plan 的SDP
- // With Plan B SDP, an RtpTransceiver can have any number of senders and
// receivers which map to a=ssrc lines in the m=