mirror of
https://github.com/livekit/livekit.git
synced 2026-03-30 13:25:42 +00:00
106 lines
2.4 KiB
Go
106 lines
2.4 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 rtc
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import (
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"sync"
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"time"
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"github.com/pion/rtcp"
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"github.com/livekit/protocol/livekit"
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"github.com/livekit/protocol/logger"
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"github.com/livekit/livekit-server/pkg/sfu"
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)
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const (
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downLostUpdateDelta = time.Second
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)
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type MediaLossProxyParams struct {
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Logger logger.Logger
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}
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type MediaLossProxy struct {
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params MediaLossProxyParams
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lock sync.Mutex
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maxDownFracLost uint8
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maxDownFracLostTs time.Time
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maxDownFracLostValid bool
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onMediaLossUpdate func(fractionalLoss uint8)
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}
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func NewMediaLossProxy(params MediaLossProxyParams) *MediaLossProxy {
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return &MediaLossProxy{params: params}
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}
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func (m *MediaLossProxy) OnMediaLossUpdate(f func(fractionalLoss uint8)) {
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m.lock.Lock()
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m.onMediaLossUpdate = f
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m.lock.Unlock()
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}
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func (m *MediaLossProxy) HandleMaxLossFeedback(_ *sfu.DownTrack, report *rtcp.ReceiverReport) {
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m.lock.Lock()
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for _, rr := range report.Reports {
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m.maxDownFracLostValid = true
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if m.maxDownFracLost < rr.FractionLost {
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m.maxDownFracLost = rr.FractionLost
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}
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}
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m.lock.Unlock()
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m.maybeUpdateLoss()
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}
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func (m *MediaLossProxy) NotifySubscriberNodeMediaLoss(_nodeID livekit.NodeID, fractionalLoss uint8) {
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m.lock.Lock()
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m.maxDownFracLostValid = true
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if m.maxDownFracLost < fractionalLoss {
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m.maxDownFracLost = fractionalLoss
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}
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m.lock.Unlock()
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m.maybeUpdateLoss()
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}
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func (m *MediaLossProxy) maybeUpdateLoss() {
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var (
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shouldUpdate bool
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maxLost uint8
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)
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m.lock.Lock()
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now := time.Now()
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if now.Sub(m.maxDownFracLostTs) > downLostUpdateDelta && m.maxDownFracLostValid {
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shouldUpdate = true
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maxLost = m.maxDownFracLost
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m.maxDownFracLost = 0
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m.maxDownFracLostTs = now
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m.maxDownFracLostValid = false
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}
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onMediaLossUpdate := m.onMediaLossUpdate
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m.lock.Unlock()
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if shouldUpdate {
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if onMediaLossUpdate != nil {
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onMediaLossUpdate(maxLost)
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}
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}
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}
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