Forgot to transfer ddBytes (#1592)

pkg/sfu/downtrack.go

@@ -492,7 +492,7 @@ func (d *DownTrack) maybeStartKeyFrameRequester() {
 	//
 	d.stopKeyFrameRequester()
 
-	// TODO : for svc, don't need pli/lrr when layer comes down
+	// SVC-TODO : don't need pli/lrr when layer comes down
 	locked, layer := d.forwarder.CheckSync()
 	if !locked {
 		go d.keyFrameRequester(d.keyFrameRequestGeneration.Load(), layer)

pkg/sfu/forwarder.go

@@ -1490,6 +1490,7 @@ func (f *Forwarder) getTranslationParamsVideo(extPkt *buffer.ExtPacket, layer in
 	tp.isSwitchingToMaxLayer = result.IsSwitchingToMaxSpatial
 	tp.isResuming = result.IsResuming
 	tp.marker = result.RTPMarker
+	tp.ddBytes = result.DependencyDescriptorExtension
 
 	if FlagPauseOnDowngrade && f.isDeficientLocked() && f.vls.GetTarget().Spatial < f.vls.GetCurrent().Spatial {
 		//

pkg/sfu/receiver.go

@@ -484,7 +484,7 @@ func (w *WebRTCReceiver) sendRTCP(packets []rtcp.Packet) {
 }
 
 func (w *WebRTCReceiver) SendPLI(layer int32, force bool) {
-	// TODO :  should send LRR (Layer Refresh Request) instead of PLI
+	// SVC-TODO :  should send LRR (Layer Refresh Request) instead of PLI
 	buff := w.getBuffer(layer)
 	if buff == nil {
 		return