From e316b309640160d84fe3e28160595a021a6a5138 Mon Sep 17 00:00:00 2001
From: Sean DuBois <sean@siobud.com>
Date: Sat, 15 Jan 2022 23:15:56 -0500
Subject: [PATCH] Add RID to Track and baseTrack (#376)

This was added in pion/webrtc@f644649
---
 mediastream_test.go | 4 ++++
 track.go            | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/mediastream_test.go b/mediastream_test.go
index 4d432b58..9c86d479 100644
--- a/mediastream_test.go
+++ b/mediastream_test.go
@@ -19,6 +19,10 @@ func (track *mockMediaStreamTrack) StreamID() string {
 	return ""
 }
 
+func (track *mockMediaStreamTrack) RID() string {
+	return ""
+}
+
 func (track *mockMediaStreamTrack) Close() error {
 	return nil
 }
diff --git a/track.go b/track.go
index 53fe8dc1..ca57395e 100644
--- a/track.go
+++ b/track.go
@@ -56,6 +56,8 @@ type Track interface {
 	Kind() webrtc.RTPCodecType
 	// StreamID is the group this track belongs too. This must be unique
 	StreamID() string
+	// RID is the RTP Stearm ID for this track. This is only used for Simulcast
+	RID() string
 	// Bind binds the current track source to the given peer connection. In Pion/webrtc v3, the bind
 	// call will happen automatically after the SDP negotiation. Users won't need to call this manually.
 	Bind(webrtc.TrackLocalContext) (webrtc.RTPCodecParameters, error)
@@ -115,6 +117,11 @@ func (track *baseTrack) StreamID() string {
 	return generator.String()
 }
 
+// RID is only relevant if you wish to use Simulcast
+func (track *baseTrack) RID() string {
+	return ""
+}
+
 // OnEnded sets an error handler. When a track has been created and started, if an
 // error occurs, handler will get called with the error given to the parameter.
 func (track *baseTrack) OnEnded(handler func(error)) {