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

pkg/sfu/codecmunger/codecmunger.go

@@ -0,0 +1,39 @@
+// 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 codecmunger
+
+import (
+	"errors"
+
+	"github.com/livekit/livekit-server/pkg/sfu/buffer"
+)
+
+var (
+	ErrNotVP8                          = errors.New("not VP8")
+	ErrOutOfOrderVP8PictureIdCacheMiss = errors.New("out-of-order VP8 picture id not found in cache")
+	ErrFilteredVP8TemporalLayer        = errors.New("filtered VP8 temporal layer")
+)
+
+type CodecMunger interface {
+	GetState() any
+	SeedState(state any)
+
+	SetLast(extPkt *buffer.ExtPacket)
+	UpdateOffsets(extPkt *buffer.ExtPacket)
+
+	UpdateAndGet(extPkt *buffer.ExtPacket, snOutOfOrder bool, snHasGap bool, maxTemporal int32) (int, []byte, error)
+
+	UpdateAndGetPadding(newPicture bool) ([]byte, error)
+}