mirror of
https://github.com/hanzoai/livekit.git
synced 2026-10-30 18:29:34 +00:00
zeekay
e9292da479
This fork lived at github.com/hanzoai/livekit but still declared
`module github.com/livekit/livekit-server`, so all 505 self-references pointed
at upstream. A fork that does not own its module path is the exact thing the
owned-module-paths rule exists to prevent: every import line in every consumer
carries someone else's brand, and `go get` resolves to their code, not ours.
module + 505 self-imports github.com/livekit/livekit-server -> github.com/hanzoai/livekit
KV client github.com/redis/go-redis/v9 -> github.com/hanzokv/go/v9
message bus github.com/livekit/psrpc -> github.com/hanzoai/psrpc
psrpc had to be forked (hanzoai/psrpc, Apache-2.0) because its bus is typed
against the KV client — the same shape redsync had for hanzoai/git.
DELIBERATELY NOT FORKED: github.com/livekit/{protocol,mediatransportutil,
mageutil} keep their addresses. Only `protocol` still reaches go-redis, through
a single file (redis/redis.go) out of 305. Forking an 11.5MB core wire-protocol
library that this server must track in lockstep — and that upstream pushed
yesterday — to change one file trades a tidy dependency graph for permanent
divergence on the fastest-moving dependency here. So one indirect
github.com/redis/go-redis entry remains, via livekit/protocol/redis, and that
is the correct place for it to live.
109 lines
2.9 KiB
Go
109 lines
2.9 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 videolayerselector
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import (
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"github.com/pion/rtp/codecs"
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"github.com/hanzoai/livekit/pkg/sfu/buffer"
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"github.com/livekit/protocol/logger"
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)
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type VP9 struct {
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*Base
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}
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func NewVP9(logger logger.Logger) *VP9 {
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return &VP9{
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Base: NewBase(logger),
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}
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}
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func NewVP9FromOther(vls VideoLayerSelector) *VP9 {
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return &VP9{Base: vls.getBase()}
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}
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func (v *VP9) IsOvershootOkay() bool {
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return false
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}
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func (v *VP9) Select(extPkt *buffer.ExtPacket, _layer int32) (result VideoLayerSelectorResult) {
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vp9, ok := extPkt.Payload.(codecs.VP9Packet)
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if !ok {
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return
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}
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currentLayer := v.currentLayer
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if v.currentLayer != v.targetLayer {
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updatedLayer := v.currentLayer
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if !v.currentLayer.IsValid() {
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if !extPkt.IsKeyFrame {
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return
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}
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updatedLayer = extPkt.VideoLayer
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} else {
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if v.currentLayer.Temporal != v.targetLayer.Temporal {
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if v.currentLayer.Temporal < v.targetLayer.Temporal {
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// temporal scale up
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if extPkt.VideoLayer.Temporal > v.currentLayer.Temporal && extPkt.VideoLayer.Temporal <= v.targetLayer.Temporal && vp9.U && vp9.B {
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currentLayer.Temporal = extPkt.VideoLayer.Temporal
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updatedLayer.Temporal = extPkt.VideoLayer.Temporal
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}
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} else {
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// temporal scale down
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if vp9.E {
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updatedLayer.Temporal = v.targetLayer.Temporal
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}
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}
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}
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if v.currentLayer.Spatial != v.targetLayer.Spatial {
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if v.currentLayer.Spatial < v.targetLayer.Spatial {
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// spatial scale up
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if extPkt.VideoLayer.Spatial > v.currentLayer.Spatial && extPkt.VideoLayer.Spatial <= v.targetLayer.Spatial && !vp9.P && vp9.B {
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currentLayer.Spatial = extPkt.VideoLayer.Spatial
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updatedLayer.Spatial = extPkt.VideoLayer.Spatial
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}
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} else {
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// spatial scale down
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if vp9.E {
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updatedLayer.Spatial = v.targetLayer.Spatial
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}
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}
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}
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}
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if updatedLayer != v.currentLayer {
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result.IsSwitching = true
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if !v.currentLayer.IsValid() && updatedLayer.IsValid() {
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result.IsResuming = true
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}
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v.previousLayer = v.currentLayer
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v.currentLayer = updatedLayer
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}
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}
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result.RTPMarker = extPkt.Packet.Marker
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if vp9.E && extPkt.VideoLayer.Spatial == currentLayer.Spatial && (vp9.P || v.targetLayer.Spatial <= v.currentLayer.Spatial) {
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result.RTPMarker = true
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}
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result.IsSelected = !extPkt.VideoLayer.GreaterThan(currentLayer)
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result.IsRelevant = true
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return
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}
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