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Resize packet cache dynamically.

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This commit is contained in:
Juliusz Chroboczek 2020-06-04 01:03:05 +02:00
parent b00d2abacf
commit ce7f3670bc
1 changed files with 26 additions and 3 deletions
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29
webclient.go
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@ -366,7 +366,7 @@ func addUpConn(c *webClient, id string) (*upConnection, error) {
track := &upTrack{ track := &upTrack{
track: remote, track: remote,
label: label, label: label,
cache: packetcache.New(96), cache: packetcache.New(32),
rate: estimator.New(time.Second), rate: estimator.New(time.Second),
jitter: jitter.New(remote.Codec().ClockRate), jitter: jitter.New(remote.Codec().ClockRate),
maxBitrate: ^uint64(0), maxBitrate: ^uint64(0),
@ -975,11 +975,12 @@ func handleReport(track *rtpDownTrack, report rtcp.ReceptionReport, jiffies uint
} }
} }
func updateUpBitrate(up *upConnection, maxVideoRate uint64) { func updateUpTrack(up *upConnection, maxVideoRate uint64) {
now := rtptime.Jiffies() now := rtptime.Jiffies()
for _, track := range up.tracks { for _, track := range up.tracks {
isvideo := track.track.Kind() == webrtc.RTPCodecTypeVideo isvideo := track.track.Kind() == webrtc.RTPCodecTypeVideo
clockrate := track.track.Codec().ClockRate
minrate := uint64(minAudioRate) minrate := uint64(minAudioRate)
rate := ^uint64(0) rate := ^uint64(0)
if isvideo { if isvideo {
@ -990,6 +991,7 @@ func updateUpBitrate(up *upConnection, maxVideoRate uint64) {
} }
} }
local := track.getLocal() local := track.getLocal()
var maxrto uint64
for _, l := range local { for _, l := range local {
bitrate := l.GetMaxBitrate(now) bitrate := l.GetMaxBitrate(now)
if bitrate == ^uint64(0) { if bitrate == ^uint64(0) {
@ -1002,8 +1004,29 @@ func updateUpBitrate(up *upConnection, maxVideoRate uint64) {
if rate > bitrate { if rate > bitrate {
rate = bitrate rate = bitrate
} }
ll, ok := l.(*rtpDownTrack)
if ok {
_, j := ll.stats.Get(now)
jitter := uint64(j) *
(rtptime.JiffiesPerSec /
uint64(clockrate))
rtt := atomic.LoadUint64(&ll.rtt)
rto := rtt + 4*jitter
if rto > maxrto {
maxrto = rto
}
}
} }
track.maxBitrate = rate track.maxBitrate = rate
_, r := track.rate.Estimate()
packets := int((uint64(r) * maxrto * 4) / rtptime.JiffiesPerSec)
if packets < 32 {
packets = 32
}
if packets > 256 {
packets = 256
}
track.cache.ResizeCond(packets)
} }
} }
@ -1690,7 +1713,7 @@ func sendRateUpdate(c *webClient) {
c.mu.Lock() c.mu.Lock()
for _, u := range c.up { for _, u := range c.up {
updateUpBitrate(u, maxVideoRate) updateUpTrack(u, maxVideoRate)
for _, t := range u.tracks { for _, t := range u.tracks {
if !t.hasRtcpFb("goog-remb", "") { if !t.hasRtcpFb("goog-remb", "") {
continue continue