Add helper to configure CCFB (defined in RFC 8888)

Adds a helper function to register an interceptor that produces
congestion control feedback as defined in RFC 8888
(https://datatracker.ietf.org/doc/rfc8888/).

go.mod

@@ -8,10 +8,10 @@ require (
 	github.com/pion/datachannel v1.5.2
 	github.com/pion/dtls/v2 v2.1.5
 	github.com/pion/ice/v2 v2.2.6
-	github.com/pion/interceptor v0.1.11
+	github.com/pion/interceptor v0.1.12
 	github.com/pion/logging v0.2.2
 	github.com/pion/randutil v0.1.0
-	github.com/pion/rtcp v1.2.9
+	github.com/pion/rtcp v1.2.10
 	github.com/pion/rtp v1.7.13
 	github.com/pion/sctp v1.8.2
 	github.com/pion/sdp/v3 v3.0.5

go.sum

@@ -47,16 +47,17 @@ github.com/pion/dtls/v2 v2.1.5 h1:jlh2vtIyUBShchoTDqpCCqiYCyRFJ/lvf/gQ8TALs+c=
 github.com/pion/dtls/v2 v2.1.5/go.mod h1:BqCE7xPZbPSubGasRoDFJeTsyJtdD1FanJYL0JGheqY=
 github.com/pion/ice/v2 v2.2.6 h1:R/vaLlI1J2gCx141L5PEwtuGAGcyS6e7E0hDeJFq5Ig=
 github.com/pion/ice/v2 v2.2.6/go.mod h1:SWuHiOGP17lGromHTFadUe1EuPgFh/oCU6FCMZHooVE=
-github.com/pion/interceptor v0.1.11 h1:00U6OlqxA3FFB50HSg25J/8cWi7P6FbSzw4eFn24Bvs=
-github.com/pion/interceptor v0.1.11/go.mod h1:tbtKjZY14awXd7Bq0mmWvgtHB5MDaRN7HV3OZ/uy7s8=
+github.com/pion/interceptor v0.1.12 h1:CslaNriCFUItiXS5o+hh5lpL0t0ytQkFnUcbbCs2Zq8=
+github.com/pion/interceptor v0.1.12/go.mod h1:bDtgAD9dRkBZpWHGKaoKb42FhDHTG2rX8Ii9LRALLVA=
 github.com/pion/logging v0.2.2 h1:M9+AIj/+pxNsDfAT64+MAVgJO0rsyLnoJKCqf//DoeY=
 github.com/pion/logging v0.2.2/go.mod h1:k0/tDVsRCX2Mb2ZEmTqNa7CWsQPc+YYCB7Q+5pahoms=
 github.com/pion/mdns v0.0.5 h1:Q2oj/JB3NqfzY9xGZ1fPzZzK7sDSD8rZPOvcIQ10BCw=
 github.com/pion/mdns v0.0.5/go.mod h1:UgssrvdD3mxpi8tMxAXbsppL3vJ4Jipw1mTCW+al01g=
 github.com/pion/randutil v0.1.0 h1:CFG1UdESneORglEsnimhUjf33Rwjubwj6xfiOXBa3mA=
 github.com/pion/randutil v0.1.0/go.mod h1:XcJrSMMbbMRhASFVOlj/5hQial/Y8oH/HVo7TBZq+j8=
-github.com/pion/rtcp v1.2.9 h1:1ujStwg++IOLIEoOiIQ2s+qBuJ1VN81KW+9pMPsif+U=
 github.com/pion/rtcp v1.2.9/go.mod h1:qVPhiCzAm4D/rxb6XzKeyZiQK69yJpbUDJSF7TgrqNo=
+github.com/pion/rtcp v1.2.10 h1:nkr3uj+8Sp97zyItdN60tE/S6vk4al5CPRR6Gejsdjc=
+github.com/pion/rtcp v1.2.10/go.mod h1:ztfEwXZNLGyF1oQDttz/ZKIBaeeg/oWbRYqzBM9TL1I=
 github.com/pion/rtp v1.7.13 h1:qcHwlmtiI50t1XivvoawdCGTP4Uiypzfrsap+bijcoA=
 github.com/pion/rtp v1.7.13/go.mod h1:bDb5n+BFZxXx0Ea7E5qe+klMuqiBrP+w8XSjiWtCUko=
 github.com/pion/sctp v1.8.0/go.mod h1:xFe9cLMZ5Vj6eOzpyiKjT9SwGM4KpK/8Jbw5//jc+0s=

interceptor.go

@@ -9,6 +9,7 @@ import (
 	"github.com/pion/interceptor"
 	"github.com/pion/interceptor/pkg/nack"
 	"github.com/pion/interceptor/pkg/report"
+	"github.com/pion/interceptor/pkg/rfc8888"
 	"github.com/pion/interceptor/pkg/twcc"
 	"github.com/pion/rtp"
 	"github.com/pion/sdp/v3"
@@ -110,6 +111,19 @@ func ConfigureTWCCSender(mediaEngine *MediaEngine, interceptorRegistry *intercep
 	return nil
 }
 
+// ConfigureCongestionControlFeedback registers congestion control feedback as
+// defined in RFC 8888 (https://datatracker.ietf.org/doc/rfc8888/)
+func ConfigureCongestionControlFeedback(mediaEngine *MediaEngine, interceptorRegistry *interceptor.Registry) error {
+	mediaEngine.RegisterFeedback(RTCPFeedback{Type: TypeRTCPFBACK, Parameter: "ccfb"}, RTPCodecTypeVideo)
+	mediaEngine.RegisterFeedback(RTCPFeedback{Type: TypeRTCPFBACK, Parameter: "ccfb"}, RTPCodecTypeAudio)
+	generator, err := rfc8888.NewSenderInterceptor()
+	if err != nil {
+		return err
+	}
+	interceptorRegistry.Add(generator)
+	return nil
+}
+
 type interceptorToTrackLocalWriter struct{ interceptor atomic.Value } // interceptor.RTPWriter }
 
 func (i *interceptorToTrackLocalWriter) WriteRTP(header *rtp.Header, payload []byte) (int, error) {