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

pkg/sfu/buffer/videolayer.go

@@ -0,0 +1,58 @@
+// 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 buffer
+
+import "fmt"
+
+const (
+	InvalidLayerSpatial  = int32(-1)
+	InvalidLayerTemporal = int32(-1)
+
+	DefaultMaxLayerSpatial  = int32(2)
+	DefaultMaxLayerTemporal = int32(3)
+)
+
+var (
+	InvalidLayer = VideoLayer{
+		Spatial:  InvalidLayerSpatial,
+		Temporal: InvalidLayerTemporal,
+	}
+
+	DefaultMaxLayer = VideoLayer{
+		Spatial:  DefaultMaxLayerSpatial,
+		Temporal: DefaultMaxLayerTemporal,
+	}
+)
+
+type VideoLayer struct {
+	Spatial  int32
+	Temporal int32
+}
+
+func (v VideoLayer) String() string {
+	return fmt.Sprintf("VideoLayer{s: %d, t: %d}", v.Spatial, v.Temporal)
+}
+
+func (v VideoLayer) GreaterThan(v2 VideoLayer) bool {
+	return v.Spatial > v2.Spatial || (v.Spatial == v2.Spatial && v.Temporal > v2.Temporal)
+}
+
+func (v VideoLayer) SpatialGreaterThanOrEqual(v2 VideoLayer) bool {
+	return v.Spatial >= v2.Spatial
+}
+
+func (v VideoLayer) IsValid() bool {
+	return v.Spatial != InvalidLayerSpatial && v.Temporal != InvalidLayerTemporal
+}