mirror of
https://github.com/livekit/livekit.git
synced 2026-05-14 18:25:24 +00:00
Raja Subramanian
f7291fdaa8
* Do not send both asb-send-time and twcc. In single peer connection mode, both extensions are set on the media engine and both would be negotiated. Unfortunately, pion/webrtc does not yet support RTPSender.SetParameters() which would allow setting specific header extensions for the sender. So, check for TWCC enabled and use it. If not, do abs-send-time if that is enabled. * check BWE type * comment
124 lines
2.6 KiB
Go
124 lines
2.6 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 bwe
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import (
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"fmt"
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"time"
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"github.com/livekit/livekit-server/pkg/sfu/ccutils"
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"github.com/pion/rtcp"
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)
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// ------------------------------------------------
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const (
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DefaultRTT = float64(0.070) // 70 ms
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RTTSmoothingFactor = float64(0.5)
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)
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// ------------------------------------------------
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type BWEType int
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const (
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BWETypeNone BWEType = iota
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BWETypeRemote
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BWETypeSendSide
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)
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func (b BWEType) String() string {
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switch b {
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case BWETypeNone:
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return "NONE"
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case BWETypeRemote:
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return "REMOTE"
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case BWETypeSendSide:
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return "SEND_SIDE"
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default:
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return fmt.Sprintf("%d", int(b))
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}
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}
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// ------------------------------------------------
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type CongestionState int
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const (
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CongestionStateNone CongestionState = iota
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CongestionStateEarlyWarning
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CongestionStateCongested
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)
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func (c CongestionState) String() string {
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switch c {
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case CongestionStateNone:
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return "NONE"
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case CongestionStateEarlyWarning:
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return "EARLY_WARNING"
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case CongestionStateCongested:
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return "CONGESTED"
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default:
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return fmt.Sprintf("%d", int(c))
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}
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}
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// ------------------------------------------------
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type BWE interface {
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Type() BWEType
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SetBWEListener(bweListner BWEListener)
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Reset()
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HandleREMB(
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receivedEstimate int64,
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expectedBandwidthUsage int64,
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sentPackets uint32,
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repeatedNacks uint32,
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)
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// TWCC sequence number
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RecordPacketSendAndGetSequenceNumber(
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atMicro int64,
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size int,
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isRTX bool,
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probeClusterId ccutils.ProbeClusterId,
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isProbe bool,
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) uint16
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HandleTWCCFeedback(report *rtcp.TransportLayerCC)
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UpdateRTT(rtt float64)
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CongestionState() CongestionState
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CanProbe() bool
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ProbeDuration() time.Duration
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ProbeClusterStarting(pci ccutils.ProbeClusterInfo)
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ProbeClusterDone(pci ccutils.ProbeClusterInfo)
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ProbeClusterIsGoalReached() bool
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ProbeClusterFinalize() (ccutils.ProbeSignal, int64, bool)
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}
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// ------------------------------------------------
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type BWEListener interface {
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OnCongestionStateChange(fromState CongestionState, toState CongestionState, estimatedAvailableChannelCapacity int64)
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}
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// ------------------------------------------------
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