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

pkg/sfu/streamtracker/interfaces.go

@@ -0,0 +1,70 @@
+// 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 streamtracker
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/livekit/livekit-server/pkg/sfu/buffer"
+)
+
+// ------------------------------------------------------------
+
+type StreamStatusChange int32
+
+func (s StreamStatusChange) String() string {
+	switch s {
+	case StreamStatusChangeNone:
+		return "none"
+	case StreamStatusChangeStopped:
+		return "stopped"
+	case StreamStatusChangeActive:
+		return "active"
+	default:
+		return fmt.Sprintf("unknown: %d", int(s))
+	}
+}
+
+const (
+	StreamStatusChangeNone StreamStatusChange = iota
+	StreamStatusChangeStopped
+	StreamStatusChangeActive
+)
+
+// ------------------------------------------------------------
+
+type StreamTrackerImpl interface {
+	Start()
+	Stop()
+	Reset()
+
+	GetCheckInterval() time.Duration
+
+	Observe(hasMarker bool, ts uint32) StreamStatusChange
+	CheckStatus() StreamStatusChange
+}
+
+type StreamTrackerWorker interface {
+	Start()
+	Stop()
+	Reset()
+	OnStatusChanged(f func(status StreamStatus))
+	OnBitrateAvailable(f func())
+	Status() StreamStatus
+	BitrateTemporalCumulative() []int64
+	SetPaused(paused bool)
+	Observe(temporalLayer int32, pktSize int, payloadSize int, hasMarker bool, ts uint32, dd *buffer.ExtDependencyDescriptor)
+}