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Code Issues Packages Projects Releases Wiki Activity

Cache and restore forwarder state on resume (#786)

Browse Source 
* WIP commit

* Clean up

* spelling mistake

* Run subscribed track onBind in a go routine

* Address comments and more safety net

* Cache and restore forwarder state on resume

* conflicts

* mage generate
This commit is contained in:
Raja Subramanian
2022-06-24 22:02:03 +05:30
committed by GitHub
parent 407996702b
commit 46bce33fb8
8 changed files with 236 additions and 112 deletions
Download Patch File Download Diff File Expand all files Collapse all files
pkg/rtc/mediatracksubscriptions.go
+14 -5
View File
@@ -10,6 +10,7 @@ import (
"github.com/pion/rtcp"
"github.com/pion/webrtc/v3"
"github.com/pion/webrtc/v3/pkg/rtcerr"
"go.uber.org/atomic"
"github.com/livekit/protocol/livekit"
"github.com/livekit/protocol/logger"
@@ -171,8 +172,13 @@ func (t *MediaTrackSubscriptions) AddSubscriber(sub types.LocalParticipant, wr *
})
// Bind callback can happen from replaceTrack, so set it up early
var reusingTransceiver atomic.Bool
var forwarderState sfu.ForwarderState
downTrack.OnBind(func() {
wr.DetermineReceiver(downTrack.Codec())
if reusingTransceiver.Load() {
downTrack.SeedForwarderState(forwarderState)
}
if err = wr.AddDownTrack(downTrack); err != nil {
t.params.Logger.Errorw("could not add down track", err, "participant", sub.Identity(), "pID", sub.ID())
}
@@ -191,9 +197,11 @@ func (t *MediaTrackSubscriptions) AddSubscriber(sub types.LocalParticipant, wr *
var sender *webrtc.RTPSender
// try cached RTP senders for a chance to replace track
var existingTransceiver *webrtc.RTPTransceiver
replacedTrack := false
existingTransceiver := sub.GetCachedRTPTransceiver(trackID)
existingTransceiver, forwarderState = sub.GetCachedDownTrack(trackID)
if existingTransceiver != nil {
reusingTransceiver.Store(true)
rtpSender := existingTransceiver.Sender()
if rtpSender != nil {
err := rtpSender.ReplaceTrack(downTrack)
@@ -216,6 +224,7 @@ func (t *MediaTrackSubscriptions) AddSubscriber(sub types.LocalParticipant, wr *
existingTransceiver.Stop()
}
}
reusingTransceiver.Store(false)
// if cannot replace, find an unused transceiver or add new one
if transceiver == nil {
@@ -259,7 +268,7 @@ func (t *MediaTrackSubscriptions) AddSubscriber(sub types.LocalParticipant, wr *
// wthether re-using or stopping remove transceiver from cache
// NOTE: safety net, if somehow a cached transceiver is re-used by a different track
sub.UncacheRTPTransceiver(transceiver)
sub.UncacheDownTrack(transceiver)
sendParameters := sender.GetParameters()
downTrack.SetRTPHeaderExtensions(sendParameters.HeaderExtensions)
@@ -339,15 +348,15 @@ func (t *MediaTrackSubscriptions) closeSubscribedTrack(subTrack types.Subscribed
return
}
dt.CloseWithFlush(!willBeResumed)
if willBeResumed {
tr := dt.GetTransceiver()
if tr != nil {
sub := subTrack.Subscriber()
sub.CacheRTPTransceiver(subTrack.ID(), tr)
sub.CacheDownTrack(subTrack.ID(), tr, dt.GetForwarderState())
}
}
dt.CloseWithFlush(!willBeResumed)
}
func (t *MediaTrackSubscriptions) ResyncAllSubscribers() {
pkg/rtc/participant.go
+21 -11
View File
@@ -44,6 +44,11 @@ type pendingTrackInfo struct {
migrated bool
}
type downTrackState struct {
transceiver *webrtc.RTPTransceiver
forwarder sfu.ForwarderState
}
type ParticipantParams struct {
Identity livekit.ParticipantIdentity
Name livekit.ParticipantName
@@ -138,7 +143,7 @@ type ParticipantImpl struct {
firstConnected atomic.Bool
iceConfig types.IceConfig
cachedRTPTransceivers map[livekit.TrackID]*webrtc.RTPTransceiver
cachedDownTracks map[livekit.TrackID]*downTrackState
}
func NewParticipant(params ParticipantParams) (*ParticipantImpl, error) {
@@ -161,7 +166,7 @@ func NewParticipant(params ParticipantParams) (*ParticipantImpl, error) {
subscribedTo: make(map[livekit.ParticipantID]struct{}),
connectedAt: time.Now(),
rttUpdatedAt: time.Now(),
cachedRTPTransceivers: make(map[livekit.TrackID]*webrtc.RTPTransceiver),
cachedDownTracks: make(map[livekit.TrackID]*downTrackState),
}
p.version.Store(params.InitialVersion)
p.migrateState.Store(types.MigrateStateInit)
@@ -1912,29 +1917,34 @@ func (p *ParticipantImpl) setDowntracksConnected() {
}
}
func (p *ParticipantImpl) CacheRTPTransceiver(trackID livekit.TrackID, rtpTransceiver *webrtc.RTPTransceiver) {
func (p *ParticipantImpl) CacheDownTrack(trackID livekit.TrackID, rtpTransceiver *webrtc.RTPTransceiver, forwarderState sfu.ForwarderState) {
p.lock.Lock()
if existing := p.cachedRTPTransceivers[trackID]; existing != nil && existing != rtpTransceiver {
if existing := p.cachedDownTracks[trackID]; existing != nil && existing.transceiver != rtpTransceiver {
p.params.Logger.Infow("cached transceiver change", "trackID", trackID)
}
p.cachedRTPTransceivers[trackID] = rtpTransceiver
p.cachedDownTracks[trackID] = &downTrackState{transceiver: rtpTransceiver, forwarder: forwarderState}
p.lock.Unlock()
}
func (p *ParticipantImpl) UncacheRTPTransceiver(rtpTransceiver *webrtc.RTPTransceiver) {
func (p *ParticipantImpl) UncacheDownTrack(rtpTransceiver *webrtc.RTPTransceiver) {
p.lock.Lock()
for trackID, tr := range p.cachedRTPTransceivers {
if tr == rtpTransceiver {
delete(p.cachedRTPTransceivers, trackID)
for trackID, dts := range p.cachedDownTracks {
if dts.transceiver == rtpTransceiver {
delete(p.cachedDownTracks, trackID)
break
}
}
p.lock.Unlock()
}
func (p *ParticipantImpl) GetCachedRTPTransceiver(trackID livekit.TrackID) *webrtc.RTPTransceiver {
func (p *ParticipantImpl) GetCachedDownTrack(trackID livekit.TrackID) (*webrtc.RTPTransceiver, sfu.ForwarderState) {
p.lock.RLock()
defer p.lock.RUnlock()
return p.cachedRTPTransceivers[trackID]
dts := p.cachedDownTracks[trackID]
if dts != nil {
return dts.transceiver, dts.forwarder
}
return nil, sfu.ForwarderState{}
}
pkg/rtc/types/interfaces.go
+3 -3
View File
@@ -247,9 +247,9 @@ type LocalParticipant interface {
UpdateRTT(rtt uint32)
CacheRTPTransceiver(trackID livekit.TrackID, rtpTransceiver *webrtc.RTPTransceiver)
UncacheRTPTransceiver(rtpTransceiver *webrtc.RTPTransceiver)
GetCachedRTPTransceiver(trackID livekit.TrackID) *webrtc.RTPTransceiver
CacheDownTrack(trackID livekit.TrackID, rtpTransceiver *webrtc.RTPTransceiver, forwarderState sfu.ForwarderState)
UncacheDownTrack(rtpTransceiver *webrtc.RTPTransceiver)
GetCachedDownTrack(trackID livekit.TrackID) (*webrtc.RTPTransceiver, sfu.ForwarderState)
}
// Room is a container of participants, and can provide room-level actions
pkg/rtc/types/typesfakes/fake_local_participant.go
+101 -93
View File
@@ -7,6 +7,7 @@ import (
"github.com/livekit/livekit-server/pkg/routing"
"github.com/livekit/livekit-server/pkg/rtc/types"
"github.com/livekit/livekit-server/pkg/sfu"
"github.com/livekit/protocol/auth"
"github.com/livekit/protocol/livekit"
"github.com/livekit/protocol/logger"
@@ -50,11 +51,12 @@ type FakeLocalParticipant struct {
addTrackArgsForCall []struct {
arg1 *livekit.AddTrackRequest
}
CacheRTPTransceiverStub func(livekit.TrackID, *webrtc.RTPTransceiver)
cacheRTPTransceiverMutex sync.RWMutex
cacheRTPTransceiverArgsForCall []struct {
CacheDownTrackStub func(livekit.TrackID, *webrtc.RTPTransceiver, sfu.ForwarderState)
cacheDownTrackMutex sync.RWMutex
cacheDownTrackArgsForCall []struct {
arg1 livekit.TrackID
arg2 *webrtc.RTPTransceiver
arg3 sfu.ForwarderState
}
CanPublishStub func() bool
canPublishMutex sync.RWMutex
@@ -150,16 +152,18 @@ type FakeLocalParticipant struct {
result1 float64
result2 bool
}
GetCachedRTPTransceiverStub func(livekit.TrackID) *webrtc.RTPTransceiver
getCachedRTPTransceiverMutex sync.RWMutex
getCachedRTPTransceiverArgsForCall []struct {
GetCachedDownTrackStub func(livekit.TrackID) (*webrtc.RTPTransceiver, sfu.ForwarderState)
getCachedDownTrackMutex sync.RWMutex
getCachedDownTrackArgsForCall []struct {
arg1 livekit.TrackID
}
getCachedRTPTransceiverReturns struct {
getCachedDownTrackReturns struct {
result1 *webrtc.RTPTransceiver
result2 sfu.ForwarderState
}
getCachedRTPTransceiverReturnsOnCall map[int]struct {
getCachedDownTrackReturnsOnCall map[int]struct {
result1 *webrtc.RTPTransceiver
result2 sfu.ForwarderState
}
GetConnectionQualityStub func() *livekit.ConnectionQualityInfo
getConnectionQualityMutex sync.RWMutex
@@ -606,9 +610,9 @@ type FakeLocalParticipant struct {
toProtoReturnsOnCall map[int]struct {
result1 *livekit.ParticipantInfo
}
UncacheRTPTransceiverStub func(*webrtc.RTPTransceiver)
uncacheRTPTransceiverMutex sync.RWMutex
uncacheRTPTransceiverArgsForCall []struct {
UncacheDownTrackStub func(*webrtc.RTPTransceiver)
uncacheDownTrackMutex sync.RWMutex
uncacheDownTrackArgsForCall []struct {
arg1 *webrtc.RTPTransceiver
}
UpdateMediaLossStub func(livekit.NodeID, livekit.TrackID, uint32) error
@@ -873,37 +877,38 @@ func (fake *FakeLocalParticipant) AddTrackArgsForCall(i int) *livekit.AddTrackRe
return argsForCall.arg1
}
func (fake *FakeLocalParticipant) CacheRTPTransceiver(arg1 livekit.TrackID, arg2 *webrtc.RTPTransceiver) {
fake.cacheRTPTransceiverMutex.Lock()
fake.cacheRTPTransceiverArgsForCall = append(fake.cacheRTPTransceiverArgsForCall, struct {
func (fake *FakeLocalParticipant) CacheDownTrack(arg1 livekit.TrackID, arg2 *webrtc.RTPTransceiver, arg3 sfu.ForwarderState) {
fake.cacheDownTrackMutex.Lock()
fake.cacheDownTrackArgsForCall = append(fake.cacheDownTrackArgsForCall, struct {
arg1 livekit.TrackID
arg2 *webrtc.RTPTransceiver
}{arg1, arg2})
stub := fake.CacheRTPTransceiverStub
fake.recordInvocation("CacheRTPTransceiver", []interface{}{arg1, arg2})
fake.cacheRTPTransceiverMutex.Unlock()
arg3 sfu.ForwarderState
}{arg1, arg2, arg3})
stub := fake.CacheDownTrackStub
fake.recordInvocation("CacheDownTrack", []interface{}{arg1, arg2, arg3})
fake.cacheDownTrackMutex.Unlock()
if stub != nil {
fake.CacheRTPTransceiverStub(arg1, arg2)
fake.CacheDownTrackStub(arg1, arg2, arg3)
}
}
func (fake *FakeLocalParticipant) CacheRTPTransceiverCallCount() int {
fake.cacheRTPTransceiverMutex.RLock()
defer fake.cacheRTPTransceiverMutex.RUnlock()
return len(fake.cacheRTPTransceiverArgsForCall)
func (fake *FakeLocalParticipant) CacheDownTrackCallCount() int {
fake.cacheDownTrackMutex.RLock()
defer fake.cacheDownTrackMutex.RUnlock()
return len(fake.cacheDownTrackArgsForCall)
}
func (fake *FakeLocalParticipant) CacheRTPTransceiverCalls(stub func(livekit.TrackID, *webrtc.RTPTransceiver)) {
fake.cacheRTPTransceiverMutex.Lock()
defer fake.cacheRTPTransceiverMutex.Unlock()
fake.CacheRTPTransceiverStub = stub
func (fake *FakeLocalParticipant) CacheDownTrackCalls(stub func(livekit.TrackID, *webrtc.RTPTransceiver, sfu.ForwarderState)) {
fake.cacheDownTrackMutex.Lock()
defer fake.cacheDownTrackMutex.Unlock()
fake.CacheDownTrackStub = stub
}
func (fake *FakeLocalParticipant) CacheRTPTransceiverArgsForCall(i int) (livekit.TrackID, *webrtc.RTPTransceiver) {
fake.cacheRTPTransceiverMutex.RLock()
defer fake.cacheRTPTransceiverMutex.RUnlock()
argsForCall := fake.cacheRTPTransceiverArgsForCall[i]
return argsForCall.arg1, argsForCall.arg2
func (fake *FakeLocalParticipant) CacheDownTrackArgsForCall(i int) (livekit.TrackID, *webrtc.RTPTransceiver, sfu.ForwarderState) {
fake.cacheDownTrackMutex.RLock()
defer fake.cacheDownTrackMutex.RUnlock()
argsForCall := fake.cacheDownTrackArgsForCall[i]
return argsForCall.arg1, argsForCall.arg2, argsForCall.arg3
}
func (fake *FakeLocalParticipant) CanPublish() bool {
@@ -1395,65 +1400,68 @@ func (fake *FakeLocalParticipant) GetAudioLevelReturnsOnCall(i int, result1 floa
}{result1, result2}
}
func (fake *FakeLocalParticipant) GetCachedRTPTransceiver(arg1 livekit.TrackID) *webrtc.RTPTransceiver {
fake.getCachedRTPTransceiverMutex.Lock()
ret, specificReturn := fake.getCachedRTPTransceiverReturnsOnCall[len(fake.getCachedRTPTransceiverArgsForCall)]
fake.getCachedRTPTransceiverArgsForCall = append(fake.getCachedRTPTransceiverArgsForCall, struct {
func (fake *FakeLocalParticipant) GetCachedDownTrack(arg1 livekit.TrackID) (*webrtc.RTPTransceiver, sfu.ForwarderState) {
fake.getCachedDownTrackMutex.Lock()
ret, specificReturn := fake.getCachedDownTrackReturnsOnCall[len(fake.getCachedDownTrackArgsForCall)]
fake.getCachedDownTrackArgsForCall = append(fake.getCachedDownTrackArgsForCall, struct {
arg1 livekit.TrackID
}{arg1})
stub := fake.GetCachedRTPTransceiverStub
fakeReturns := fake.getCachedRTPTransceiverReturns
fake.recordInvocation("GetCachedRTPTransceiver", []interface{}{arg1})
fake.getCachedRTPTransceiverMutex.Unlock()
stub := fake.GetCachedDownTrackStub
fakeReturns := fake.getCachedDownTrackReturns
fake.recordInvocation("GetCachedDownTrack", []interface{}{arg1})
fake.getCachedDownTrackMutex.Unlock()
if stub != nil {
return stub(arg1)
}
if specificReturn {
return ret.result1
return ret.result1, ret.result2
}
return fakeReturns.result1
return fakeReturns.result1, fakeReturns.result2
}
func (fake *FakeLocalParticipant) GetCachedRTPTransceiverCallCount() int {
fake.getCachedRTPTransceiverMutex.RLock()
defer fake.getCachedRTPTransceiverMutex.RUnlock()
return len(fake.getCachedRTPTransceiverArgsForCall)
func (fake *FakeLocalParticipant) GetCachedDownTrackCallCount() int {
fake.getCachedDownTrackMutex.RLock()
defer fake.getCachedDownTrackMutex.RUnlock()
return len(fake.getCachedDownTrackArgsForCall)
}
func (fake *FakeLocalParticipant) GetCachedRTPTransceiverCalls(stub func(livekit.TrackID) *webrtc.RTPTransceiver) {
fake.getCachedRTPTransceiverMutex.Lock()
defer fake.getCachedRTPTransceiverMutex.Unlock()
fake.GetCachedRTPTransceiverStub = stub
func (fake *FakeLocalParticipant) GetCachedDownTrackCalls(stub func(livekit.TrackID) (*webrtc.RTPTransceiver, sfu.ForwarderState)) {
fake.getCachedDownTrackMutex.Lock()
defer fake.getCachedDownTrackMutex.Unlock()
fake.GetCachedDownTrackStub = stub
}
func (fake *FakeLocalParticipant) GetCachedRTPTransceiverArgsForCall(i int) livekit.TrackID {
fake.getCachedRTPTransceiverMutex.RLock()
defer fake.getCachedRTPTransceiverMutex.RUnlock()
argsForCall := fake.getCachedRTPTransceiverArgsForCall[i]
func (fake *FakeLocalParticipant) GetCachedDownTrackArgsForCall(i int) livekit.TrackID {
fake.getCachedDownTrackMutex.RLock()
defer fake.getCachedDownTrackMutex.RUnlock()
argsForCall := fake.getCachedDownTrackArgsForCall[i]
return argsForCall.arg1
}
func (fake *FakeLocalParticipant) GetCachedRTPTransceiverReturns(result1 *webrtc.RTPTransceiver) {
fake.getCachedRTPTransceiverMutex.Lock()
defer fake.getCachedRTPTransceiverMutex.Unlock()
fake.GetCachedRTPTransceiverStub = nil
fake.getCachedRTPTransceiverReturns = struct {
func (fake *FakeLocalParticipant) GetCachedDownTrackReturns(result1 *webrtc.RTPTransceiver, result2 sfu.ForwarderState) {
fake.getCachedDownTrackMutex.Lock()
defer fake.getCachedDownTrackMutex.Unlock()
fake.GetCachedDownTrackStub = nil
fake.getCachedDownTrackReturns = struct {
result1 *webrtc.RTPTransceiver
}{result1}
result2 sfu.ForwarderState
}{result1, result2}
}
func (fake *FakeLocalParticipant) GetCachedRTPTransceiverReturnsOnCall(i int, result1 *webrtc.RTPTransceiver) {
fake.getCachedRTPTransceiverMutex.Lock()
defer fake.getCachedRTPTransceiverMutex.Unlock()
fake.GetCachedRTPTransceiverStub = nil
if fake.getCachedRTPTransceiverReturnsOnCall == nil {
fake.getCachedRTPTransceiverReturnsOnCall = make(map[int]struct {
func (fake *FakeLocalParticipant) GetCachedDownTrackReturnsOnCall(i int, result1 *webrtc.RTPTransceiver, result2 sfu.ForwarderState) {
fake.getCachedDownTrackMutex.Lock()
defer fake.getCachedDownTrackMutex.Unlock()
fake.GetCachedDownTrackStub = nil
if fake.getCachedDownTrackReturnsOnCall == nil {
fake.getCachedDownTrackReturnsOnCall = make(map[int]struct {
result1 *webrtc.RTPTransceiver
result2 sfu.ForwarderState
})
}
fake.getCachedRTPTransceiverReturnsOnCall[i] = struct {
fake.getCachedDownTrackReturnsOnCall[i] = struct {
result1 *webrtc.RTPTransceiver
}{result1}
result2 sfu.ForwarderState
}{result1, result2}
}
func (fake *FakeLocalParticipant) GetConnectionQuality() *livekit.ConnectionQualityInfo {
@@ -3921,35 +3929,35 @@ func (fake *FakeLocalParticipant) ToProtoReturnsOnCall(i int, result1 *livekit.P
}{result1}
}
func (fake *FakeLocalParticipant) UncacheRTPTransceiver(arg1 *webrtc.RTPTransceiver) {
fake.uncacheRTPTransceiverMutex.Lock()
fake.uncacheRTPTransceiverArgsForCall = append(fake.uncacheRTPTransceiverArgsForCall, struct {
func (fake *FakeLocalParticipant) UncacheDownTrack(arg1 *webrtc.RTPTransceiver) {
fake.uncacheDownTrackMutex.Lock()
fake.uncacheDownTrackArgsForCall = append(fake.uncacheDownTrackArgsForCall, struct {
arg1 *webrtc.RTPTransceiver
}{arg1})
stub := fake.UncacheRTPTransceiverStub
fake.recordInvocation("UncacheRTPTransceiver", []interface{}{arg1})
fake.uncacheRTPTransceiverMutex.Unlock()
stub := fake.UncacheDownTrackStub
fake.recordInvocation("UncacheDownTrack", []interface{}{arg1})
fake.uncacheDownTrackMutex.Unlock()
if stub != nil {
fake.UncacheRTPTransceiverStub(arg1)
fake.UncacheDownTrackStub(arg1)
}
}
func (fake *FakeLocalParticipant) UncacheRTPTransceiverCallCount() int {
fake.uncacheRTPTransceiverMutex.RLock()
defer fake.uncacheRTPTransceiverMutex.RUnlock()
return len(fake.uncacheRTPTransceiverArgsForCall)
func (fake *FakeLocalParticipant) UncacheDownTrackCallCount() int {
fake.uncacheDownTrackMutex.RLock()
defer fake.uncacheDownTrackMutex.RUnlock()
return len(fake.uncacheDownTrackArgsForCall)
}
func (fake *FakeLocalParticipant) UncacheRTPTransceiverCalls(stub func(*webrtc.RTPTransceiver)) {
fake.uncacheRTPTransceiverMutex.Lock()
defer fake.uncacheRTPTransceiverMutex.Unlock()
fake.UncacheRTPTransceiverStub = stub
func (fake *FakeLocalParticipant) UncacheDownTrackCalls(stub func(*webrtc.RTPTransceiver)) {
fake.uncacheDownTrackMutex.Lock()
defer fake.uncacheDownTrackMutex.Unlock()
fake.UncacheDownTrackStub = stub
}
func (fake *FakeLocalParticipant) UncacheRTPTransceiverArgsForCall(i int) *webrtc.RTPTransceiver {
fake.uncacheRTPTransceiverMutex.RLock()
defer fake.uncacheRTPTransceiverMutex.RUnlock()
argsForCall := fake.uncacheRTPTransceiverArgsForCall[i]
func (fake *FakeLocalParticipant) UncacheDownTrackArgsForCall(i int) *webrtc.RTPTransceiver {
fake.uncacheDownTrackMutex.RLock()
defer fake.uncacheDownTrackMutex.RUnlock()
argsForCall := fake.uncacheDownTrackArgsForCall[i]
return argsForCall.arg1
}
@@ -4313,8 +4321,8 @@ func (fake *FakeLocalParticipant) Invocations() map[string][][]interface{} {
defer fake.addSubscriberMutex.RUnlock()
fake.addTrackMutex.RLock()
defer fake.addTrackMutex.RUnlock()
fake.cacheRTPTransceiverMutex.RLock()
defer fake.cacheRTPTransceiverMutex.RUnlock()
fake.cacheDownTrackMutex.RLock()
defer fake.cacheDownTrackMutex.RUnlock()
fake.canPublishMutex.RLock()
defer fake.canPublishMutex.RUnlock()
fake.canPublishDataMutex.RLock()
@@ -4333,8 +4341,8 @@ func (fake *FakeLocalParticipant) Invocations() map[string][][]interface{} {
defer fake.getAdaptiveStreamMutex.RUnlock()
fake.getAudioLevelMutex.RLock()
defer fake.getAudioLevelMutex.RUnlock()
fake.getCachedRTPTransceiverMutex.RLock()
defer fake.getCachedRTPTransceiverMutex.RUnlock()
fake.getCachedDownTrackMutex.RLock()
defer fake.getCachedDownTrackMutex.RUnlock()
fake.getConnectionQualityMutex.RLock()
defer fake.getConnectionQualityMutex.RUnlock()
fake.getLoggerMutex.RLock()
@@ -4437,8 +4445,8 @@ func (fake *FakeLocalParticipant) Invocations() map[string][][]interface{} {
defer fake.subscriptionPermissionUpdateMutex.RUnlock()
fake.toProtoMutex.RLock()
defer fake.toProtoMutex.RUnlock()
fake.uncacheRTPTransceiverMutex.RLock()
defer fake.uncacheRTPTransceiverMutex.RUnlock()
fake.uncacheDownTrackMutex.RLock()
defer fake.uncacheDownTrackMutex.RUnlock()
fake.updateMediaLossMutex.RLock()
defer fake.updateMediaLossMutex.RUnlock()
fake.updateRTTMutex.RLock()
pkg/sfu/downtrack.go
+8
View File
@@ -722,6 +722,14 @@ func (d *DownTrack) MaxLayers() VideoLayers {
return d.forwarder.MaxLayers()
}
func (d *DownTrack) GetForwarderState() ForwarderState {
return d.forwarder.GetState()
}
func (d *DownTrack) SeedForwarderState(state ForwarderState) {
d.forwarder.SeedState(state)
}
func (d *DownTrack) GetForwardingStatus() ForwardingStatus {
return d.forwarder.GetForwardingStatus()
}
pkg/sfu/forwarder.go
+40
View File
@@ -163,6 +163,14 @@ var (
// -------------------------------------------------------------------
type ForwarderState struct {
LastTSCalc int64
RTP RTPMungerState
VP8 VP8MungerState
}
// -------------------------------------------------------------------
type Forwarder struct {
lock sync.RWMutex
codec webrtc.RTPCodecCapability
@@ -217,6 +225,9 @@ func NewForwarder(kind webrtc.RTPCodecType, logger logger.Logger) *Forwarder {
}
func (f *Forwarder) DetermineCodec(codec webrtc.RTPCodecCapability) {
f.lock.Lock()
defer f.lock.Unlock()
if f.codec.MimeType != "" {
return
}
@@ -233,6 +244,35 @@ func (f *Forwarder) DetermineCodec(codec webrtc.RTPCodecCapability) {
}
}
func (f *Forwarder) GetState() ForwarderState {
f.lock.RLock()
defer f.lock.RUnlock()
state := ForwarderState{
LastTSCalc: f.lTSCalc,
RTP: f.rtpMunger.GetLast(),
}
if f.vp8Munger != nil {
state.VP8 = f.vp8Munger.GetLast()
}
return state
}
func (f *Forwarder) SeedState(state ForwarderState) {
f.lock.Lock()
defer f.lock.Unlock()
f.lTSCalc = state.LastTSCalc
f.rtpMunger.SeedLast(state.RTP)
if f.vp8Munger != nil {
f.vp8Munger.SeedLast(state.VP8)
}
f.started = true
}
func (f *Forwarder) Mute(val bool) (bool, VideoLayers) {
f.lock.Lock()
defer f.lock.Unlock()
pkg/sfu/rtpmunger.go
+17
View File
@@ -36,6 +36,11 @@ type SnTs struct {
timestamp uint32
}
type RTPMungerState struct {
LastSN uint16
LastTS uint32
}
type RTPMungerParams struct {
highestIncomingSN uint16
lastSN uint16
@@ -75,6 +80,18 @@ func (r *RTPMunger) GetParams() RTPMungerParams {
}
}
func (r *RTPMunger) GetLast() RTPMungerState {
return RTPMungerState{
LastSN: r.lastSN,
LastTS: r.lastTS,
}
}
func (r *RTPMunger) SeedLast(state RTPMungerState) {
r.lastSN = state.LastSN
r.lastTS = state.LastTS
}
func (r *RTPMunger) SetLastSnTs(extPkt *buffer.ExtPacket) {
r.highestIncomingSN = extPkt.Packet.SequenceNumber - 1
r.lastSN = extPkt.Packet.SequenceNumber
pkg/sfu/vp8munger.go
+32
View File
@@ -15,6 +15,16 @@ type TranslationParamsVP8 struct {
Header *buffer.VP8
}
type VP8MungerState struct {
ExtLastPictureId int32
PictureIdUsed int
LastTl0PicIdx uint8
Tl0PicIdxUsed int
TidUsed int
LastKeyIdx uint8
KeyIdxUsed int
}
type VP8MungerParams struct {
pictureIdWrapHandler VP8PictureIdWrapHandler
extLastPictureId int32
@@ -48,6 +58,28 @@ func NewVP8Munger(logger logger.Logger) *VP8Munger {
}
}
func (v *VP8Munger) GetLast() VP8MungerState {
return VP8MungerState{
ExtLastPictureId: v.extLastPictureId,
PictureIdUsed: v.pictureIdUsed,
LastTl0PicIdx: v.lastTl0PicIdx,
Tl0PicIdxUsed: v.tl0PicIdxUsed,
TidUsed: v.tidUsed,
LastKeyIdx: v.lastKeyIdx,
KeyIdxUsed: v.keyIdxUsed,
}
}
func (v *VP8Munger) SeedLast(state VP8MungerState) {
v.extLastPictureId = state.ExtLastPictureId
v.pictureIdUsed = state.PictureIdUsed
v.lastTl0PicIdx = state.LastTl0PicIdx
v.tl0PicIdxUsed = state.Tl0PicIdxUsed
v.tidUsed = state.TidUsed
v.lastKeyIdx = state.LastKeyIdx
v.keyIdxUsed = state.KeyIdxUsed
}
func (v *VP8Munger) SetLast(extPkt *buffer.ExtPacket) {
vp8, ok := extPkt.Payload.(buffer.VP8)
if !ok {