webrtc: include in answer codecs that are actually in use

bluenviron · May 19, 2024 · e06a0cc · e06a0cc
1 parent 0ace308
commit e06a0cc
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Showing 10 changed files with 376 additions and 397 deletions.
diff --git a/internal/protocols/webrtc/api.go b/internal/protocols/webrtc/api.go
diff --git a/internal/protocols/webrtc/incoming_track.go b/internal/protocols/webrtc/incoming_track.go
@@ -19,6 +19,88 @@ const (
 	keyFrameInterval = 2 * time.Second
 )
 
+var incomingVideoCodecs = []webrtc.RTPCodecParameters{
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:  webrtc.MimeTypeAV1,
+			ClockRate: 90000,
+		},
+		PayloadType: 96,
+	},
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:    webrtc.MimeTypeVP9,
+			ClockRate:   90000,
+			SDPFmtpLine: "profile-id=0",
+		},
+		PayloadType: 97,
+	},
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:    webrtc.MimeTypeVP9,
+			ClockRate:   90000,
+			SDPFmtpLine: "profile-id=1",
+		},
+		PayloadType: 98,
+	},
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:  webrtc.MimeTypeVP8,
+			ClockRate: 90000,
+		},
+		PayloadType: 99,
+	},
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:    webrtc.MimeTypeH264,
+			ClockRate:   90000,
+			SDPFmtpLine: "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f",
+		},
+		PayloadType: 100,
+	},
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:    webrtc.MimeTypeH264,
+			ClockRate:   90000,
+			SDPFmtpLine: "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f",
+		},
+		PayloadType: 101,
+	},
+}
+
+var incomingAudioCodecs = []webrtc.RTPCodecParameters{
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:    webrtc.MimeTypeOpus,
+			ClockRate:   48000,
+			Channels:    2,
+			SDPFmtpLine: "minptime=10;useinbandfec=1;stereo=1;sprop-stereo=1",
+		},
+		PayloadType: 111,
+	},
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:  webrtc.MimeTypeG722,
+			ClockRate: 8000,
+		},
+		PayloadType: 9,
+	},
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:  webrtc.MimeTypePCMU,
+			ClockRate: 8000,
+		},
+		PayloadType: 0,
+	},
+	{
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType:  webrtc.MimeTypePCMA,
+			ClockRate: 8000,
+		},
+		PayloadType: 8,
+	},
+}
+
 // IncomingTrack is an incoming track.
 type IncomingTrack struct {
 	track *webrtc.TrackRemote