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https://github.com/jech/galene.git
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Limit the video rate when we have large numbers of presenters.
This commit is contained in:
parent
ffee80440b
commit
fd6b9f6bdd
2 changed files with 48 additions and 13 deletions
55
client.go
55
client.go
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@ -10,6 +10,7 @@ import (
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"errors"
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"io"
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"log"
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"math"
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"math/bits"
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"os"
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"strings"
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@ -306,6 +307,9 @@ func addUpConn(c *client, id string) (*upConnection, error) {
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}
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u.tracks = append(u.tracks, track)
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done := len(u.tracks) >= u.trackCount
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if remote.Kind() == webrtc.RTPCodecTypeVideo {
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atomic.AddUint32(&c.group.videoCount, 1)
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}
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c.mu.Unlock()
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clients := c.group.getClients(c)
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@ -464,6 +468,17 @@ func delUpConn(c *client, id string) bool {
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return false
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}
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for _, track := range conn.tracks {
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if track.track.Kind() == webrtc.RTPCodecTypeVideo {
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count := atomic.AddUint32(&c.group.videoCount,
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^uint32(0))
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if count == ^uint32(0) {
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log.Printf("Negative track count!")
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atomic.StoreUint32(&c.group.videoCount, 0)
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}
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}
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}
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type clientId struct {
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client *client
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id string
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@ -707,30 +722,35 @@ func trackKinds(down *downConnection) (audio bool, video bool) {
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return
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}
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func updateUpBitrate(up *upConnection) {
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func updateUpBitrate(up *upConnection, maxVideoRate uint64) {
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now := mono.Microseconds()
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for _, track := range up.tracks {
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track.maxBitrate = ^uint64(0)
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isvideo := track.track.Kind() == webrtc.RTPCodecTypeVideo
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minrate := uint64(minAudioRate)
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rate := ^uint64(0)
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if isvideo {
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minrate = minVideoRate
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rate = maxVideoRate
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if rate < minrate {
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rate = minrate
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}
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}
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local := track.getLocal()
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for _, l := range local {
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bitrate := l.GetMaxBitrate(now)
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if bitrate == ^uint64(0) {
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continue
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}
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isvideo := l.track.Kind() == webrtc.RTPCodecTypeVideo
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minrate := uint64(9600)
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if isvideo {
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minrate = 384000
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if bitrate <= minrate {
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rate = minrate
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break
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}
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if bitrate < minrate {
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bitrate = minrate
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}
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if track.maxBitrate > bitrate {
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track.maxBitrate = bitrate
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if rate > bitrate {
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rate = bitrate
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}
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}
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track.maxBitrate = rate
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}
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}
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@ -1168,9 +1188,18 @@ func sendRateUpdate(c *client) {
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}
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rembs := make([]remb, 0)
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maxVideoRate := ^uint64(0)
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count := atomic.LoadUint32(&c.group.videoCount)
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if count >= 3 {
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maxVideoRate = uint64(2000000 / math.Sqrt(float64(count)))
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if maxVideoRate < minVideoRate {
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maxVideoRate = minVideoRate
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}
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}
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c.mu.Lock()
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for _, u := range c.up {
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updateUpBitrate(u)
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updateUpBitrate(u, maxVideoRate)
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for _, t := range u.tracks {
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bitrate := t.maxBitrate
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if bitrate == ^uint64(0) {
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6
group.go
6
group.go
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@ -162,10 +162,16 @@ type chatHistoryEntry struct {
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me bool
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}
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const (
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minVideoRate = 38400
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minAudioRate = 9600
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)
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type group struct {
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name string
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dead bool
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description *groupDescription
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videoCount uint32
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mu sync.Mutex
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clients map[string]*client
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