58 lines
1.3 KiB
Go
58 lines
1.3 KiB
Go
// Copyright 2023 LiveKit, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package temporallayerselector
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import (
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"github.com/livekit/livekit-server/pkg/sfu/buffer"
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"github.com/livekit/mediatransportutil/pkg/codec"
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"github.com/livekit/protocol/logger"
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)
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type VP8 struct {
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logger logger.Logger
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}
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func NewVP8(logger logger.Logger) *VP8 {
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return &VP8{
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logger: logger,
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}
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}
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func (v *VP8) Select(extPkt *buffer.ExtPacket, current int32, target int32) (this int32, next int32) {
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this = current
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next = current
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if current == target {
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return
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}
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vp8, ok := extPkt.Payload.(codec.VP8)
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if !ok {
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return
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}
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tid := extPkt.Temporal
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if current < target {
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if tid > current && tid <= target && vp8.S {
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this = tid
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next = tid
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}
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} else {
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if extPkt.Packet.Marker {
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next = target
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}
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}
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return
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}
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