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Support handling multiple RTX but only generate SDP with RTX associated with VP8.

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This implementation registers RTX-APT map inside RTP sender and receiver.
While it only generates SDP with RTX associated with VP8 to make it
compatible with previous Chrome versions.

Should add following changes after reaches stable,
* Use RTX-APT map for building and restoring RTP packets.
* Add RTX support for RED or VP9 in Video engine.
* Set RTX payload type for RED inside FecConfig in EndToEndTest.

BUG=4024
R=mflodman@webrtc.org, pbos@webrtc.org, pthatcher@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/36889004

Cr-Commit-Position: refs/heads/master@{#9040}
This commit is contained in:
Shao Changbin
2015-04-21 20:24:50 +08:00
parent 6cff9cf8a3
commit e62202fedf
40 changed files with 461 additions and 251 deletions
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5
webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h
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@ -88,8 +88,9 @@ class ModuleRtpRtcpImpl : public RtpRtcp {
void SetRtxSsrc(uint32_t ssrc) override;
void SetRtxSendPayloadType(int payload_type) override;
int RtxSendPayloadType() const override;
void SetRtxSendPayloadType(int payload_type,
int associated_payload_type) override;
std::pair<int, int> RtxSendPayloadType() const override;
// Sends kRtcpByeCode when going from true to false.
int32_t SetSendingStatus(bool sending) override;