report all simulcast layers (#4491)

pkg/rtc/mediatrack.go

@@ -437,6 +437,11 @@ func (t *MediaTrack) AddReceiver(receiver *webrtc.RTPReceiver, track sfu.TrackRe
 			ti.Source,
 			ti.Type,
 		)
+		for _, c := range ti.Codecs {
+			for _, l := range c.Layers {
+				t.params.Reporter.ReportLayer(roomobs.PackTrackLayer(l.Height, l.Width))
+			}
+		}
 		newWR.OnStatsUpdate(func(_ *sfu.WebRTCReceiver, stat *livekit.AnalyticsStat) {
 			// send for only one codec, either primary (priority == 0) OR regressed codec
 			t.lock.RLock()
@@ -452,7 +457,6 @@ func (t *MediaTrack) AddReceiver(receiver *webrtc.RTPReceiver, track sfu.TrackRe
 						tx.ReportType(roomobs.TrackTypeFromProto(ti.Type))
 						tx.ReportSource(roomobs.TrackSourceFromProto(ti.Source))
 						tx.ReportMime(mime.NormalizeMimeType(ti.MimeType).ReporterType())
-						tx.ReportLayer(roomobs.PackTrackLayer(ti.Height, ti.Width))
 						tx.ReportDuration(uint16(cs.EndTime.Sub(cs.StartTime).Milliseconds()))
 						tx.ReportFrames(uint16(cs.Frames))
 						tx.ReportRecvBytes(uint32(cs.Bytes))