From dc2c8829948da7b6d29d445ec2d5326eaebf5114 Mon Sep 17 00:00:00 2001
From: xia-chu <771730766@qq.com>
Date: Fri, 30 Apr 2021 15:08:43 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0remb=E5=BC=80=E5=85=B3?=
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---
 webrtc/Sdp.cpp | 20 ++++++++++++++++----
 webrtc/Sdp.h   |  1 +
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/webrtc/Sdp.cpp b/webrtc/Sdp.cpp
index 8a671f66..3c137fde 100644
--- a/webrtc/Sdp.cpp
+++ b/webrtc/Sdp.cpp
@@ -1252,6 +1252,8 @@ bool RtcSession::supportRtcpFb(const string &name, TrackType type) const {
 
 static string const kTWCCRtcpFb = "transport-cc";
 static string const kTWCCExtMap = "http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01";
+static string const kRembRtcpFb = "goog-remb";
+static string const kRembExtMap = "http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time";
 
 void RtcConfigure::RtcTrackConfigure::enableTWCC(bool enable){
     if (!enable) {
@@ -1263,6 +1265,16 @@ void RtcConfigure::RtcTrackConfigure::enableTWCC(bool enable){
     }
 }
 
+void RtcConfigure::RtcTrackConfigure::enableREMB(bool enable){
+    if (!enable) {
+        rtcp_fb.erase(kRembRtcpFb);
+        extmap.erase(kRembExtMap);
+    } else {
+        rtcp_fb.emplace(kRembRtcpFb);
+        extmap.emplace(kRembExtMap);
+    }
+}
+
 void RtcConfigure::RtcTrackConfigure::setDefaultSetting(TrackType type){
     enable = true;
     rtcp_mux = true;
@@ -1278,11 +1290,11 @@ void RtcConfigure::RtcTrackConfigure::setDefaultSetting(TrackType type){
         case TrackAudio: {
             //此处调整偏好的编码格式优先级
             preferred_codec = {CodecAAC, CodecG711U, CodecG711A, CodecOpus};
-            rtcp_fb = {kTWCCRtcpFb};
+            rtcp_fb = {kTWCCRtcpFb, kRembRtcpFb};
             extmap = {
                     kTWCCExtMap,
+                    kRembExtMap,
                     "urn:ietf:params:rtp-hdrext:ssrc-audio-level",
-                    "http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time",
                     "urn:ietf:params:rtp-hdrext:sdes:mid",
                     "urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id",
                     "urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id"
@@ -1292,11 +1304,11 @@ void RtcConfigure::RtcTrackConfigure::setDefaultSetting(TrackType type){
         case TrackVideo: {
             //此处调整偏好的编码格式优先级
             preferred_codec = {CodecH264, CodecH265};
-            rtcp_fb = {kTWCCRtcpFb, "nack", "ccm fir", "nack pli", "goog-remb"};
+            rtcp_fb = {kTWCCRtcpFb, kRembRtcpFb, "nack", "ccm fir", "nack pli"};
             extmap = {
                     kTWCCExtMap,
+                    kRembExtMap,
                     "urn:ietf:params:rtp-hdrext:toffset",
-                    "http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time",
                     "urn:3gpp:video-orientation",
                     "http://www.webrtc.org/experiments/rtp-hdrext/playout-delay",
                     "http://www.webrtc.org/experiments/rtp-hdrext/video-content-type",
diff --git a/webrtc/Sdp.h b/webrtc/Sdp.h
index bcd1783c..a180c5ee 100644
--- a/webrtc/Sdp.h
+++ b/webrtc/Sdp.h
@@ -701,6 +701,7 @@ public:
 
         void setDefaultSetting(TrackType type);
         void enableTWCC(bool enable = true);
+        void enableREMB(bool enable = true);
     };
 
     RtcTrackConfigure video;