mirror of
https://github.com/jech/galene.git
synced 2024-11-10 02:35:58 +01:00
Label tracks explicitly.
For now, this is only used to request screen sharing as opposed to normal videos. In the future, it will be used for simulcasting.
This commit is contained in:
Juliusz Chroboczek
parent
7281a09f6e
commit
b26a8cad78
5 changed files with 106 additions and 78 deletions
83
client.go
83
client.go
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@ -26,7 +26,6 @@ import (
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"github.com/gorilla/websocket"
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"github.com/pion/rtcp"
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"github.com/pion/rtp"
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"github.com/pion/sdp"
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"github.com/pion/webrtc/v2"
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)
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@ -104,6 +103,7 @@ type clientMessage struct {
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Offer *webrtc.SessionDescription `json:"offer,omitempty"`
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Answer *webrtc.SessionDescription `json:"answer,omitempty"`
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Candidate *webrtc.ICECandidateInit `json:"candidate,omitempty"`
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Labels map[string]string `json:"labels,omitempty"`
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Del bool `json:"del,omitempty"`
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Request []string `json:"request,omitempty"`
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}
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@ -301,13 +301,14 @@ func addUpConn(c *client, id string) (*upConnection, error) {
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}
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track := &upTrack{
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track: remote,
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label: u.labels[remote.ID()],
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cache: packetcache.New(96),
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rate: estimator.New(time.Second),
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jitter: jitter.New(remote.Codec().ClockRate),
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maxBitrate: ^uint64(0),
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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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done := u.complete()
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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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@ -830,28 +831,27 @@ func sendRecovery(p *rtcp.TransportLayerNack, track *downTrack) {
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}
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}
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func countMediaStreams(data string) (int, error) {
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desc := sdp.NewJSEPSessionDescription(false)
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err := desc.Unmarshal(data)
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func negotiate(c *client, id string, down *downConnection) error {
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offer, err := down.pc.CreateOffer(nil)
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if err != nil {
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return 0, err
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return err
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}
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return len(desc.MediaDescriptions), nil
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}
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func negotiate(c *client, id string, pc *webrtc.PeerConnection) error {
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offer, err := pc.CreateOffer(nil)
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err = down.pc.SetLocalDescription(offer)
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if err != nil {
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return err
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}
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err = pc.SetLocalDescription(offer)
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if err != nil {
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return err
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labels := make(map[string]string)
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for _, t := range down.tracks {
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labels[t.track.ID()] = t.remote.label
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}
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return c.write(clientMessage{
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Type: "offer",
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Id: id,
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Offer: &offer,
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Labels: labels,
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})
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}
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@ -867,7 +867,7 @@ func sendICE(c *client, id string, candidate *webrtc.ICECandidate) error {
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})
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}
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func gotOffer(c *client, offer webrtc.SessionDescription, id string) error {
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func gotOffer(c *client, id string, offer webrtc.SessionDescription, labels map[string]string) error {
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var err error
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up, ok := c.up[id]
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if !ok {
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@ -879,12 +879,6 @@ func gotOffer(c *client, offer webrtc.SessionDescription, id string) error {
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if c.username != "" {
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up.label = c.username
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}
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n, err := countMediaStreams(offer.SDP)
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if err != nil {
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log.Printf("Couldn't parse SDP: %v", err)
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n = 2
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}
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up.trackCount = n
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err = up.pc.SetRemoteDescription(offer)
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if err != nil {
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return err
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@ -900,6 +894,8 @@ func gotOffer(c *client, offer webrtc.SessionDescription, id string) error {
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return err
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}
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up.labels = labels
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return c.write(clientMessage{
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Type: "answer",
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Id: id,
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@ -907,7 +903,7 @@ func gotOffer(c *client, offer webrtc.SessionDescription, id string) error {
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})
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}
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func gotAnswer(c *client, answer webrtc.SessionDescription, id string) error {
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func gotAnswer(c *client, id string, answer webrtc.SessionDescription) error {
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conn := getDownConn(c, id)
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if conn == nil {
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return protocolError("unknown id in answer")
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@ -934,11 +930,7 @@ func gotICE(c *client, candidate *webrtc.ICECandidateInit, id string) error {
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return pc.AddICECandidate(*candidate)
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}
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func (c *client) setRequested(audio, video bool) error {
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if audio == c.requestedAudio && video == c.requestedVideo {
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return nil
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}
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func (c *client) setRequested(requested []string) error {
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if c.down != nil {
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for id := range c.down {
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c.write(clientMessage{
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@ -949,8 +941,7 @@ func (c *client) setRequested(audio, video bool) error {
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}
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}
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c.requestedAudio = audio
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c.requestedVideo = video
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c.requested = requested
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go func() {
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clients := c.group.getClients(c)
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@ -962,15 +953,13 @@ func (c *client) setRequested(audio, video bool) error {
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return nil
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}
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func (c *client) requested(kind webrtc.RTPCodecType) bool {
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switch kind {
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case webrtc.RTPCodecTypeAudio:
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return c.requestedAudio
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case webrtc.RTPCodecTypeVideo:
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return c.requestedVideo
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default:
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return false
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func (c *client) isRequested(label string) bool {
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for _, r := range c.requested {
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if label == r {
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return true
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}
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}
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return false
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}
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func pushTracks(c *client, conn *upConnection, tracks []*upTrack, done bool, label string) {
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@ -989,7 +978,7 @@ func clientLoop(c *client, conn *websocket.Conn) error {
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go clientReader(conn, read, c.done)
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defer func() {
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c.setRequested(false, false)
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c.setRequested([]string{})
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if c.up != nil {
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for id := range c.up {
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delUpConn(c, id)
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@ -1044,7 +1033,7 @@ func clientLoop(c *client, conn *websocket.Conn) error {
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case addTrackAction:
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var down *downConnection
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var err error
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if c.requested(a.track.track.Kind()) {
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if c.isRequested(a.track.label) {
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down, _, err = addDownTrack(
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c, a.remote.id, a.track,
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a.remote)
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@ -1055,7 +1044,7 @@ func clientLoop(c *client, conn *websocket.Conn) error {
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down = getDownConn(c, a.remote.id)
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}
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if a.done && down != nil {
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err = negotiate(c, a.remote.id, down.pc)
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err = negotiate(c, a.remote.id, down)
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if err != nil {
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return err
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}
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@ -1080,7 +1069,7 @@ func clientLoop(c *client, conn *websocket.Conn) error {
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copy(tracks, u.tracks)
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go pushTracks(
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a.c, u, tracks,
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len(tracks) >= u.trackCount-1,
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u.complete(),
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u.label,
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)
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}
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@ -1141,15 +1130,7 @@ func clientLoop(c *client, conn *websocket.Conn) error {
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func handleClientMessage(c *client, m clientMessage) error {
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switch m.Type {
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case "request":
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var audio, video bool
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for _, s := range m.Request {
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switch(s) {
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case "audio": audio = true
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case "video": video = true
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default: log.Printf("Unknown request %v", s)
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}
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}
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err := c.setRequested(audio, video)
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err := c.setRequested(m.Request)
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if err != nil {
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return err
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}
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@ -1164,7 +1145,7 @@ func handleClientMessage(c *client, m clientMessage) error {
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if m.Offer == nil {
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return protocolError("null offer")
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}
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err := gotOffer(c, *m.Offer, m.Id)
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err := gotOffer(c, m.Id, *m.Offer, m.Labels)
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if err != nil {
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return err
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}
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@ -1172,7 +1153,7 @@ func handleClientMessage(c *client, m clientMessage) error {
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if m.Answer == nil {
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return protocolError("null answer")
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}
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err := gotAnswer(c, *m.Answer, m.Id)
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err := gotAnswer(c, m.Id, *m.Answer)
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if err != nil {
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return err
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}
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22
group.go
22
group.go
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@ -26,6 +26,7 @@ import (
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type upTrack struct {
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track *webrtc.Track
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label string
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rate *estimator.Estimator
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cache *packetcache.Cache
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jitter *jitter.Estimator
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@ -77,8 +78,24 @@ type upConnection struct {
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id string
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label string
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pc *webrtc.PeerConnection
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trackCount int
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tracks []*upTrack
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labels map[string]string
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}
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func (up *upConnection) complete() bool {
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for id, _ := range up.labels {
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found := false
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for _, t := range up.tracks {
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if t.track.ID() == id {
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found = true
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break
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}
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}
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if !found {
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return false
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}
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}
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return true
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}
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type bitrate struct {
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@ -154,8 +171,7 @@ type client struct {
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id string
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username string
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permissions userPermission
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requestedAudio bool
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requestedVideo bool
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requested []string
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done chan struct{}
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writeCh chan interface{}
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writerDone chan struct{}
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@ -65,6 +65,11 @@ h1 {
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margin-right: 0.4em;
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}
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#requestselect {
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width: 8em;
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text-align-last: center;
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}
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#main {
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display: flex;
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}
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@ -47,8 +47,12 @@
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<label for="sharebox">Share screen:</label>
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<input id="sharebox" type="checkbox" disabled/>
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<label for="requestbox">Receive video:</label>
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<input id="requestbox" type="checkbox" checked>
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<label for="requestselect">Receive:</label>
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<select id="requestselect">
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<option value="audio">audio only</option>
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<option value="screenshare">screen share</option>
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<option value="everything" selected>everything</option>
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</select>
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</div>
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</div>
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@ -39,6 +39,7 @@ function Connection(id, pc) {
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this.label = null;
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this.pc = pc;
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this.stream = null;
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this.labels = {};
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this.iceCandidates = [];
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this.timers = [];
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this.audioStats = {};
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@ -140,9 +141,9 @@ document.getElementById('sharebox').onchange = function(e) {
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setShareMedia(this.checked);
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};
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document.getElementById('requestbox').onchange = function(e) {
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document.getElementById('requestselect').onchange = function(e) {
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e.preventDefault();
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sendRequest(this.checked);
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sendRequest(this.value);
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};
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async function updateStats(conn, sender) {
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@ -312,6 +313,7 @@ async function setLocalMedia(setup) {
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let c = up[localMediaId];
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c.stream = stream;
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stream.getTracks().forEach(t => {
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c.labels[t.id] = t.kind
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let sender = c.pc.addTrack(t, stream);
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c.setInterval(() => {
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updateStats(c, sender);
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@ -358,6 +360,7 @@ async function setShareMedia(setup) {
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document.getElementById('sharebox').checked = false;
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setShareMedia(false);
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};
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c.labels[t.id] = 'screenshare';
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c.setInterval(() => {
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updateStats(c, sender);
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}, 2000);
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@ -485,7 +488,7 @@ function serverConnect() {
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username: up.username,
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password: up.password,
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});
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sendRequest(document.getElementById('requestbox').checked);
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sendRequest(document.getElementById('requestselect').value);
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resolve();
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};
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socket.onclose = function(e) {
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@ -508,7 +511,7 @@ function serverConnect() {
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let m = JSON.parse(e.data);
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switch(m.type) {
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case 'offer':
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gotOffer(m.id, m.offer);
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gotOffer(m.id, m.labels, m.offer);
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break;
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case 'answer':
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gotAnswer(m.id, m.answer);
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@ -556,14 +559,30 @@ function serverConnect() {
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});
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}
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function sendRequest(video) {
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function sendRequest(value) {
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let request = [];
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switch(value) {
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case 'audio':
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request = ['audio'];
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break;
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case 'screenshare':
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request = ['audio', 'screenshare'];
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break;
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case 'everything':
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request = ['audio', 'screenshare', 'video'];
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break;
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default:
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console.error(`Uknown value ${value} in sendRequest`);
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break;
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}
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send({
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type: 'request',
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request: video ? ['audio', 'video'] : ['audio'],
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request: request,
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});
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}
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async function gotOffer(id, offer) {
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async function gotOffer(id, labels, offer) {
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let c = down[id];
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if(!c) {
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let pc = new RTCPeerConnection({
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@ -587,6 +606,8 @@ async function gotOffer(id, offer) {
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};
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}
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c.labels = labels;
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await c.pc.setRemoteDescription(offer);
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await addIceCandidates(c);
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let answer = await c.pc.createAnswer();
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@ -1007,6 +1028,7 @@ async function negotiate(id) {
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send({
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type: 'offer',
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id: id,
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labels: c.labels,
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offer: offer,
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});
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}
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