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

pkg/sfu/buffer/rtcpreader.go

@@ -0,0 +1,63 @@
+// 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 (
+	"io"
+
+	"go.uber.org/atomic"
+)
+
+type RTCPReader struct {
+	ssrc     uint32
+	closed   atomic.Bool
+	onPacket atomic.Value // func([]byte)
+	onClose  func()
+}
+
+func NewRTCPReader(ssrc uint32) *RTCPReader {
+	return &RTCPReader{ssrc: ssrc}
+}
+
+//go:noinline
+func (r *RTCPReader) Write(p []byte) (n int, err error) {
+	if r.closed.Load() {
+		err = io.EOF
+		return
+	}
+	if f, ok := r.onPacket.Load().(func([]byte)); ok && f != nil {
+		f(p)
+	}
+	return
+}
+
+func (r *RTCPReader) OnClose(fn func()) {
+	r.onClose = fn
+}
+
+func (r *RTCPReader) Close() error {
+	if r.closed.Swap(true) {
+		return nil
+	}
+
+	r.onClose()
+	return nil
+}
+
+func (r *RTCPReader) OnPacket(f func([]byte)) {
+	r.onPacket.Store(f)
+}
+
+func (r *RTCPReader) Read(_ []byte) (n int, err error) { return }