snapshot of https://github.com/livekit/livekit.git @ 08c5433449c106943231037d0b892895f6e92d3b (2026-09-15)

pkg/sfu/videolayerselector/videolayerselector.go

@@ -0,0 +1,66 @@
+// Copyright 2023 LiveKit, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package videolayerselector
+
+import (
+	"github.com/livekit/livekit-server/pkg/sfu/buffer"
+	"github.com/livekit/livekit-server/pkg/sfu/videolayerselector/temporallayerselector"
+	"github.com/livekit/protocol/logger"
+)
+
+type VideoLayerSelectorResult struct {
+	IsSelected                    bool
+	IsRelevant                    bool
+	IsSwitching                   bool
+	IsResuming                    bool
+	RTPMarker                     bool
+	DependencyDescriptorExtension []byte
+}
+
+type VideoLayerSelector interface {
+	getBase() *Base
+
+	getLogger() logger.Logger
+
+	IsOvershootOkay() bool
+
+	SetTemporalLayerSelector(tls temporallayerselector.TemporalLayerSelector)
+	SetEnableStartAtDesiredQuality(enable bool)
+
+	SetMax(maxLayer buffer.VideoLayer)
+	SetMaxSpatial(layer int32)
+	SetMaxTemporal(layer int32)
+	GetMax() buffer.VideoLayer
+
+	SetTarget(targetLayer buffer.VideoLayer)
+	GetTarget() buffer.VideoLayer
+
+	SetRequestSpatial(layer int32)
+	GetRequestSpatial() int32
+
+	CheckSync() (locked bool, layer int32)
+
+	SetMaxSeen(maxSeenLayer buffer.VideoLayer)
+	SetMaxSeenSpatial(layer int32)
+	SetMaxSeenTemporal(layer int32)
+	GetMaxSeen() buffer.VideoLayer
+
+	SetCurrent(currentLayer buffer.VideoLayer)
+	GetCurrent() buffer.VideoLayer
+
+	Select(extPkt *buffer.ExtPacket, layer int32) VideoLayerSelectorResult
+	SelectTemporal(extPkt *buffer.ExtPacket) int32
+	Rollback()
+}