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Replace RTCPFeedback in down tracks.

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We used to copy the RTCPFeeback field from the up track.  It is
more correct to regenerate it with the exact feedback types
that we expect.
This commit is contained in:
Juliusz Chroboczek 2024-11-30 17:55:24 +01:00
parent 9eb7428b98
commit ef0201c94d
2 changed files with 32 additions and 18 deletions
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27
group/group.go
View file

@ -252,14 +252,19 @@ func CodecPayloadType(codec webrtc.RTPCodecCapability) (webrtc.PayloadType, erro
}
}
func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
fb := []webrtc.RTCPFeedback{
// VideoRTCPFeedback are the RTCP feedback types that we expect for video
// tracks.
var VideoRTCPFeedback = []webrtc.RTCPFeedback{
{"goog-remb", ""},
{"nack", ""},
{"nack", "pli"},
{"ccm", "fir"},
}
// AudioRTCPFeedback is like VideoRTCPFeedback but for audio tracks.
var AudioRTCPFeedback = []webrtc.RTCPFeedback(nil)
func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
var codecs []webrtc.RTPCodecCapability
switch name {
@ -268,7 +273,7 @@ func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
{
"video/VP8", 90000, 0,
"",
fb,
VideoRTCPFeedback,
},
}
case "vp9":
@ -276,12 +281,12 @@ func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
{
"video/VP9", 90000, 0,
"profile-id=0",
fb,
VideoRTCPFeedback,
},
{
"video/VP9", 90000, 0,
"profile-id=2",
fb,
VideoRTCPFeedback,
},
}
case "av1":
@ -289,7 +294,7 @@ func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
{
"video/AV1", 90000, 0,
"",
fb,
VideoRTCPFeedback,
},
}
case "h264":
@ -297,7 +302,7 @@ func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
{
"video/H264", 90000, 0,
"level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f",
fb,
VideoRTCPFeedback,
},
}
case "opus":
@ -305,7 +310,7 @@ func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
{
"audio/opus", 48000, 2,
"minptime=10;useinbandfec=1;stereo=1;sprop-stereo=1",
nil,
AudioRTCPFeedback,
},
}
case "g722":
@ -313,7 +318,7 @@ func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
{
"audio/G722", 8000, 1,
"",
nil,
AudioRTCPFeedback,
},
}
case "pcmu":
@ -321,7 +326,7 @@ func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
{
"audio/PCMU", 8000, 1,
"",
nil,
AudioRTCPFeedback,
},
}
case "pcma":
@ -329,7 +334,7 @@ func codecsFromName(name string) ([]webrtc.RTPCodecParameters, error) {
{
"audio/PCMU", 8000, 1,
"",
nil,
AudioRTCPFeedback,
},
}
default:

11
rtpconn/webclient.go
View file

@ -9,6 +9,7 @@ import (
"log"
"net"
"os"
"strings"
"sync"
"time"
@ -381,8 +382,16 @@ func addDownTrackUnlocked(conn *rtpDownConnection, remoteTrack *rtpUpTrack) erro
msid = "dummy"
}
// replace the RTCP feedback types with the ones we understand
remoteCodec := remoteTrack.Codec()
if strings.HasPrefix(strings.ToLower(remoteCodec.MimeType), "video/") {
remoteCodec.RTCPFeedback = group.VideoRTCPFeedback
} else {
remoteCodec.RTCPFeedback = group.AudioRTCPFeedback
}
local, err := webrtc.NewTrackLocalStaticRTP(
remoteTrack.Codec(), id, msid,
remoteCodec, id, msid,
)
if err != nil {
return err