mirror of
https://github.com/strukturag/nextcloud-spreed-signaling
synced 2024-06-03 06:22:14 +02:00
Get list of remote streams from offer/answer SDP.
This commit is contained in:
parent
b19a67c651
commit
3438098f69
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@ -253,6 +253,8 @@ type CommandProxyServerMessage struct {
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Sid string `json:"sid,omitempty"`
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Sid string `json:"sid,omitempty"`
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Bitrate int `json:"bitrate,omitempty"`
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Bitrate int `json:"bitrate,omitempty"`
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Streams []PublisherStream `json:"streams,omitempty"`
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}
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}
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// Type "payload"
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// Type "payload"
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@ -79,10 +79,40 @@ type Mcu interface {
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NewSubscriber(ctx context.Context, listener McuListener, publisher string, streamType StreamType, initiator McuInitiator) (McuSubscriber, error)
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NewSubscriber(ctx context.Context, listener McuListener, publisher string, streamType StreamType, initiator McuInitiator) (McuSubscriber, error)
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}
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}
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// PublisherStream contains the available properties when creating a
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// remote publisher in Janus.
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type PublisherStream struct {
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Mid string `json:"mid"`
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Mindex int `json:"mindex"`
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Type string `json:"type"`
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Description string `json:"description,omitempty"`
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Disabled bool `json:"disabled,omitempty"`
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// For types "audio" and "video"
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Codec string `json:"codec,omitempty"`
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// For type "audio"
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Stereo bool `json:"stereo,omitempty"`
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Fec bool `json:"fec,omitempty"`
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Dtx bool `json:"dtx,omitempty"`
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// For type "video"
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Simulcast bool `json:"simulcast,omitempty"`
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Svc bool `json:"svc,omitempty"`
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ProfileH264 string `json:"h264_profile,omitempty"`
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ProfileVP9 string `json:"vp9_profile,omitempty"`
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ExtIdVideoOrientation int `json:"videoorient_ext_id,omitempty"`
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ExtIdPlayoutDelay int `json:"playoutdelay_ext_id,omitempty"`
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}
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type RemotePublisherController interface {
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type RemotePublisherController interface {
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PublisherId() string
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PublisherId() string
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StartPublishing(ctx context.Context, publisher McuRemotePublisherProperties) error
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StartPublishing(ctx context.Context, publisher McuRemotePublisherProperties) error
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GetStreams(ctx context.Context) ([]PublisherStream, error)
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}
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}
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type RemoteMcu interface {
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type RemoteMcu interface {
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@ -128,6 +158,7 @@ type McuPublisher interface {
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HasMedia(MediaType) bool
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HasMedia(MediaType) bool
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SetMedia(MediaType)
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SetMedia(MediaType)
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GetStreams(ctx context.Context) ([]PublisherStream, error)
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PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error
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PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error
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}
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}
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35
mcu_janus.go
35
mcu_janus.go
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@ -576,6 +576,7 @@ func (m *mcuJanus) NewPublisher(ctx context.Context, listener McuListener, id st
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closeChan: make(chan struct{}, 1),
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closeChan: make(chan struct{}, 1),
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deferred: make(chan func(), 64),
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deferred: make(chan func(), 64),
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},
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},
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sdpReady: NewCloser(),
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id: id,
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id: id,
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bitrate: bitrate,
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bitrate: bitrate,
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mediaTypes: mediaTypes,
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mediaTypes: mediaTypes,
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@ -696,6 +697,15 @@ func (m *mcuJanus) getOrCreateRemotePublisher(ctx context.Context, controller Re
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return pub, nil
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return pub, nil
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}
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}
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streams, err := controller.GetStreams(ctx)
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if err != nil {
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return nil, err
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}
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if len(streams) == 0 {
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return nil, errors.New("remote publisher has no streams")
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}
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session := m.session
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session := m.session
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if session == nil {
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if session == nil {
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return nil, ErrNotConnected
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return nil, ErrNotConnected
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@ -718,27 +728,7 @@ func (m *mcuJanus) getOrCreateRemotePublisher(ctx context.Context, controller Re
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"request": "add_remote_publisher",
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"request": "add_remote_publisher",
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"room": roomId,
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"room": roomId,
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"id": streamTypeUserIds[streamType],
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"id": streamTypeUserIds[streamType],
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"streams": []map[string]interface{}{
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"streams": streams,
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{
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"mid": "0",
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"mindex": 0,
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"type": "audio",
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"codec": "opus",
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"fec": true,
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},
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{
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"mid": "1",
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"mindex": 1,
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"type": "video",
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"codec": "vp8",
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"simulcast": true,
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},
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{
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"mid": "2",
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"mindex": 2,
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"type": "data",
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},
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},
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})
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})
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if err != nil {
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if err != nil {
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if _, err2 := handle.Detach(ctx); err2 != nil {
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if _, err2 := handle.Detach(ctx); err2 != nil {
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@ -769,7 +759,8 @@ func (m *mcuJanus) getOrCreateRemotePublisher(ctx context.Context, controller Re
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deferred: make(chan func(), 64),
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deferred: make(chan func(), 64),
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},
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},
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id: controller.PublisherId(),
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sdpReady: NewCloser(),
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id: controller.PublisherId(),
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},
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},
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port: int(port),
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port: int(port),
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@ -23,10 +23,25 @@ package signaling
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import (
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import (
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"context"
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"context"
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"errors"
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"fmt"
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"fmt"
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"log"
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"log"
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"strconv"
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"strings"
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"sync/atomic"
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"github.com/notedit/janus-go"
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"github.com/notedit/janus-go"
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"github.com/pion/sdp/v3"
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)
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const (
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ExtensionUrlPlayoutDelay = "http://www.webrtc.org/experiments/rtp-hdrext/playout-delay"
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ExtensionUrlVideoOrientation = "urn:3gpp:video-orientation"
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)
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const (
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sdpHasOffer = 1
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sdpHasAnswer = 2
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)
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)
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type mcuJanusPublisher struct {
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type mcuJanusPublisher struct {
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@ -36,6 +51,10 @@ type mcuJanusPublisher struct {
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bitrate int
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bitrate int
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mediaTypes MediaType
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mediaTypes MediaType
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stats publisherStatsCounter
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stats publisherStatsCounter
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sdpFlags Flags
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sdpReady *Closer
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offerSdp atomic.Pointer[sdp.SessionDescription]
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answerSdp atomic.Pointer[sdp.SessionDescription]
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}
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}
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func (p *mcuJanusPublisher) handleEvent(event *janus.EventMsg) {
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func (p *mcuJanusPublisher) handleEvent(event *janus.EventMsg) {
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@ -154,9 +173,63 @@ func (p *mcuJanusPublisher) SendMessage(ctx context.Context, message *MessageCli
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msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
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msgctx, cancel := context.WithTimeout(context.Background(), p.mcu.mcuTimeout)
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defer cancel()
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defer cancel()
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sdpData, found := jsep_msg["sdp"]
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if !found {
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go callback(errors.New("No sdp found in offer"), nil)
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return
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}
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sdpString, ok := sdpData.(string)
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if !ok {
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go callback(errors.New("Invalid sdp found in offer"), nil)
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return
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}
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var offerSdp sdp.SessionDescription
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if err := offerSdp.UnmarshalString(sdpString); err != nil {
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log.Printf("Error parsing offer sdp %+v: %s", sdpString, err)
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p.offerSdp.Store(nil)
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p.sdpFlags.Remove(sdpHasOffer)
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} else {
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p.offerSdp.Store(&offerSdp)
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p.sdpFlags.Add(sdpHasOffer)
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if p.sdpFlags.Get() == sdpHasAnswer|sdpHasOffer {
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p.sdpReady.Close()
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}
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}
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// TODO Tear down previous publisher and get a new one if sid does
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// TODO Tear down previous publisher and get a new one if sid does
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// not match?
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// not match?
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p.sendOffer(msgctx, jsep_msg, callback)
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p.sendOffer(msgctx, jsep_msg, func(err error, jsep map[string]interface{}) {
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if err != nil {
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callback(err, jsep)
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return
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}
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sdpData, found := jsep["sdp"]
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if !found {
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log.Printf("No sdp found in answer %+v", jsep)
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} else {
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sdpString, ok := sdpData.(string)
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if !ok {
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log.Printf("Invalid sdp found in answer %+v", jsep)
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} else {
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var answerSdp sdp.SessionDescription
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if err := answerSdp.UnmarshalString(sdpString); err != nil {
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log.Printf("Error parsing answer sdp %+v: %s", sdpString, err)
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p.answerSdp.Store(nil)
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p.sdpFlags.Remove(sdpHasAnswer)
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} else {
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p.answerSdp.Store(&answerSdp)
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p.sdpFlags.Add(sdpHasAnswer)
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if p.sdpFlags.Get() == sdpHasAnswer|sdpHasOffer {
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p.sdpReady.Close()
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}
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}
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}
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}
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callback(nil, jsep)
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})
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}
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}
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case "candidate":
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case "candidate":
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p.deferred <- func() {
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p.deferred <- func() {
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@ -176,6 +249,150 @@ func (p *mcuJanusPublisher) SendMessage(ctx context.Context, message *MessageCli
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}
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}
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}
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}
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func getFmtpValue(fmtp string, key string) (string, bool) {
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parts := strings.Split(fmtp, ";")
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for _, part := range parts {
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kv := strings.SplitN(part, "=", 2)
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if len(kv) != 2 {
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continue
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}
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if strings.EqualFold(strings.TrimSpace(kv[0]), key) {
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return strings.TrimSpace(kv[1]), true
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}
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}
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return "", false
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}
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func (p *mcuJanusPublisher) GetStreams(ctx context.Context) ([]PublisherStream, error) {
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offerSdp := p.offerSdp.Load()
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answerSdp := p.answerSdp.Load()
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if offerSdp == nil || answerSdp == nil {
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select {
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case <-ctx.Done():
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return nil, ctx.Err()
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case <-p.sdpReady.C:
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offerSdp = p.offerSdp.Load()
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answerSdp = p.answerSdp.Load()
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if offerSdp == nil || answerSdp == nil {
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// Only can happen on invalid SDPs.
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return nil, errors.New("no offer and/or answer processed yet")
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}
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}
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}
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var streams []PublisherStream
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for idx, m := range answerSdp.MediaDescriptions {
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mid, found := m.Attribute(sdp.AttrKeyMID)
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if !found {
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continue
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}
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s := PublisherStream{
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Mid: mid,
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Mindex: idx,
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Type: m.MediaName.Media,
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}
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if len(m.MediaName.Formats) == 0 {
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continue
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}
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if strings.EqualFold(s.Type, "application") && strings.EqualFold(m.MediaName.Formats[0], "webrtc-datachannel") {
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s.Type = "data"
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streams = append(streams, s)
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continue
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}
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pt, err := strconv.ParseInt(m.MediaName.Formats[0], 10, 8)
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if err != nil {
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continue
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}
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answerCodec, err := answerSdp.GetCodecForPayloadType(uint8(pt))
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if err != nil {
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continue
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}
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if strings.EqualFold(s.Type, "audio") {
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s.Codec = answerCodec.Name
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if value, found := getFmtpValue(answerCodec.Fmtp, "useinbandfec"); found && value == "1" {
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s.Fec = true
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}
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if value, found := getFmtpValue(answerCodec.Fmtp, "usedtx"); found && value == "1" {
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s.Dtx = true
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}
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if value, found := getFmtpValue(answerCodec.Fmtp, "stereo"); found && value == "1" {
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s.Stereo = true
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}
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} else if strings.EqualFold(s.Type, "video") {
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s.Codec = answerCodec.Name
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// TODO: Determine if SVC is used.
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s.Svc = false
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if strings.EqualFold(answerCodec.Name, "vp9") {
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// Parse VP9 profile from "profile-id=XXX"
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// Exampe: "a=fmtp:98 profile-id=0"
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if profile, found := getFmtpValue(answerCodec.Fmtp, "profile-id"); found {
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s.ProfileVP9 = profile
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}
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} else if strings.EqualFold(answerCodec.Name, "h264") {
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// Parse H.264 profile from "profile-level-id=XXX"
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// Example: "a=fmtp:104 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f"
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if profile, found := getFmtpValue(answerCodec.Fmtp, "profile-level-id"); found {
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s.ProfileH264 = profile
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}
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}
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var extmap sdp.ExtMap
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for _, a := range m.Attributes {
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switch a.Key {
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case sdp.AttrKeyExtMap:
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if err := extmap.Unmarshal(extmap.Name() + ":" + a.Value); err != nil {
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log.Printf("Error parsing extmap %s: %s", a.Value, err)
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continue
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}
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switch extmap.URI.String() {
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case ExtensionUrlPlayoutDelay:
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s.ExtIdPlayoutDelay = extmap.Value
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case ExtensionUrlVideoOrientation:
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s.ExtIdVideoOrientation = extmap.Value
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}
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case "simulcast":
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s.Simulcast = true
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case sdp.AttrKeySSRCGroup:
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if strings.HasPrefix(a.Value, "SIM ") {
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s.Simulcast = true
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}
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}
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}
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for _, a := range offerSdp.MediaDescriptions[idx].Attributes {
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switch a.Key {
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case "simulcast":
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s.Simulcast = true
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case sdp.AttrKeySSRCGroup:
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if strings.HasPrefix(a.Value, "SIM ") {
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s.Simulcast = true
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}
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}
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}
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} else if strings.EqualFold(s.Type, "data") { // nolint
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// Already handled above.
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} else {
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log.Printf("Skip type %s", s.Type)
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continue
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}
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streams = append(streams, s)
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}
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return streams, nil
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}
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|
||||||
func (p *mcuJanusPublisher) PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error {
|
func (p *mcuJanusPublisher) PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error {
|
||||||
msg := map[string]interface{}{
|
msg := map[string]interface{}{
|
||||||
"request": "publish_remotely",
|
"request": "publish_remotely",
|
||||||
|
|
92
mcu_janus_publisher_test.go
Normal file
92
mcu_janus_publisher_test.go
Normal file
|
@ -0,0 +1,92 @@
|
||||||
|
/**
|
||||||
|
* Standalone signaling server for the Nextcloud Spreed app.
|
||||||
|
* Copyright (C) 2024 struktur AG
|
||||||
|
*
|
||||||
|
* @author Joachim Bauch <bauch@struktur.de>
|
||||||
|
*
|
||||||
|
* @license GNU AGPL version 3 or any later version
|
||||||
|
*
|
||||||
|
* This program is free software: you can redistribute it and/or modify
|
||||||
|
* it under the terms of the GNU Affero General Public License as published by
|
||||||
|
* the Free Software Foundation, either version 3 of the License, or
|
||||||
|
* (at your option) any later version.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU Affero General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Affero General Public License
|
||||||
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
package signaling
|
||||||
|
|
||||||
|
import (
|
||||||
|
"testing"
|
||||||
|
)
|
||||||
|
|
||||||
|
func TestGetFmtpValueH264(t *testing.T) {
|
||||||
|
testcases := []struct {
|
||||||
|
fmtp string
|
||||||
|
profile string
|
||||||
|
}{
|
||||||
|
{
|
||||||
|
"",
|
||||||
|
"",
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f",
|
||||||
|
"42001f",
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"level-asymmetry-allowed=1;packetization-mode=0",
|
||||||
|
"",
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"level-asymmetry-allowed=1; packetization-mode=0; profile-level-id = 42001f",
|
||||||
|
"42001f",
|
||||||
|
},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, tc := range testcases {
|
||||||
|
value, found := getFmtpValue(tc.fmtp, "profile-level-id")
|
||||||
|
if !found && tc.profile != "" {
|
||||||
|
t.Errorf("did not find profile \"%s\" in \"%s\"", tc.profile, tc.fmtp)
|
||||||
|
} else if found && tc.profile == "" {
|
||||||
|
t.Errorf("did not expect profile in \"%s\" but got \"%s\"", tc.fmtp, value)
|
||||||
|
} else if found && tc.profile != value {
|
||||||
|
t.Errorf("expected profile \"%s\" in \"%s\" but got \"%s\"", tc.profile, tc.fmtp, value)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func TestGetFmtpValueVP9(t *testing.T) {
|
||||||
|
testcases := []struct {
|
||||||
|
fmtp string
|
||||||
|
profile string
|
||||||
|
}{
|
||||||
|
{
|
||||||
|
"",
|
||||||
|
"",
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"profile-id=0",
|
||||||
|
"0",
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"profile-id = 0",
|
||||||
|
"0",
|
||||||
|
},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, tc := range testcases {
|
||||||
|
value, found := getFmtpValue(tc.fmtp, "profile-id")
|
||||||
|
if !found && tc.profile != "" {
|
||||||
|
t.Errorf("did not find profile \"%s\" in \"%s\"", tc.profile, tc.fmtp)
|
||||||
|
} else if found && tc.profile == "" {
|
||||||
|
t.Errorf("did not expect profile in \"%s\" but got \"%s\"", tc.fmtp, value)
|
||||||
|
} else if found && tc.profile != value {
|
||||||
|
t.Errorf("expected profile \"%s\" in \"%s\" but got \"%s\"", tc.profile, tc.fmtp, value)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
|
@ -217,6 +217,10 @@ func (p *mcuProxyPublisher) ProcessEvent(msg *EventProxyServerMessage) {
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
func (p *mcuProxyPublisher) GetStreams(ctx context.Context) ([]PublisherStream, error) {
|
||||||
|
return nil, errors.New("not implemented")
|
||||||
|
}
|
||||||
|
|
||||||
func (p *mcuProxyPublisher) PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error {
|
func (p *mcuProxyPublisher) PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error {
|
||||||
return errors.New("remote publishing not supported for proxy publishers")
|
return errors.New("remote publishing not supported for proxy publishers")
|
||||||
}
|
}
|
||||||
|
|
|
@ -223,6 +223,10 @@ func (p *TestMCUPublisher) SendMessage(ctx context.Context, message *MessageClie
|
||||||
}()
|
}()
|
||||||
}
|
}
|
||||||
|
|
||||||
|
func (p *TestMCUPublisher) GetStreams(ctx context.Context) ([]PublisherStream, error) {
|
||||||
|
return nil, errors.New("not implemented")
|
||||||
|
}
|
||||||
|
|
||||||
func (p *TestMCUPublisher) PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error {
|
func (p *TestMCUPublisher) PublishRemote(ctx context.Context, hostname string, port int, rtcpPort int) error {
|
||||||
return errors.New("remote publishing not supported")
|
return errors.New("remote publishing not supported")
|
||||||
}
|
}
|
||||||
|
|
|
@ -724,7 +724,6 @@ func (p *proxyRemotePublisher) PublisherId() string {
|
||||||
}
|
}
|
||||||
|
|
||||||
func (p *proxyRemotePublisher) StartPublishing(ctx context.Context, publisher signaling.McuRemotePublisherProperties) error {
|
func (p *proxyRemotePublisher) StartPublishing(ctx context.Context, publisher signaling.McuRemotePublisherProperties) error {
|
||||||
var conn *RemoteConnection
|
|
||||||
conn, err := p.proxy.getRemoteConnection(ctx, p.remoteUrl)
|
conn, err := p.proxy.getRemoteConnection(ctx, p.remoteUrl)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
return err
|
return err
|
||||||
|
@ -746,6 +745,26 @@ func (p *proxyRemotePublisher) StartPublishing(ctx context.Context, publisher si
|
||||||
return nil
|
return nil
|
||||||
}
|
}
|
||||||
|
|
||||||
|
func (p *proxyRemotePublisher) GetStreams(ctx context.Context) ([]signaling.PublisherStream, error) {
|
||||||
|
conn, err := p.proxy.getRemoteConnection(ctx, p.remoteUrl)
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
response, err := conn.RequestMessage(ctx, &signaling.ProxyClientMessage{
|
||||||
|
Type: "command",
|
||||||
|
Command: &signaling.CommandProxyClientMessage{
|
||||||
|
Type: "get-publisher-streams",
|
||||||
|
ClientId: p.publisherId,
|
||||||
|
},
|
||||||
|
})
|
||||||
|
if err != nil {
|
||||||
|
return nil, err
|
||||||
|
}
|
||||||
|
|
||||||
|
return response.Command.Streams, nil
|
||||||
|
}
|
||||||
|
|
||||||
func (s *ProxyServer) processCommand(ctx context.Context, client *ProxyClient, session *ProxySession, message *signaling.ProxyClientMessage) {
|
func (s *ProxyServer) processCommand(ctx context.Context, client *ProxyClient, session *ProxySession, message *signaling.ProxyClientMessage) {
|
||||||
cmd := message.Command
|
cmd := message.Command
|
||||||
|
|
||||||
|
@ -967,6 +986,35 @@ func (s *ProxyServer) processCommand(ctx context.Context, client *ProxyClient, s
|
||||||
},
|
},
|
||||||
}
|
}
|
||||||
session.sendMessage(response)
|
session.sendMessage(response)
|
||||||
|
case "get-publisher-streams":
|
||||||
|
client := s.GetClient(cmd.ClientId)
|
||||||
|
if client == nil {
|
||||||
|
session.sendMessage(message.NewErrorServerMessage(UnknownClient))
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
publisher, ok := client.(signaling.McuPublisher)
|
||||||
|
if !ok {
|
||||||
|
session.sendMessage(message.NewErrorServerMessage(UnknownClient))
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
streams, err := publisher.GetStreams(ctx)
|
||||||
|
if err != nil {
|
||||||
|
log.Printf("Could not get streams of publisher %s: %s", publisher.Id(), err)
|
||||||
|
session.sendMessage(message.NewWrappedErrorServerMessage(err))
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
|
response := &signaling.ProxyServerMessage{
|
||||||
|
Id: message.Id,
|
||||||
|
Type: "command",
|
||||||
|
Command: &signaling.CommandProxyServerMessage{
|
||||||
|
Id: cmd.ClientId,
|
||||||
|
Streams: streams,
|
||||||
|
},
|
||||||
|
}
|
||||||
|
session.sendMessage(response)
|
||||||
default:
|
default:
|
||||||
log.Printf("Unsupported command %+v", message.Command)
|
log.Printf("Unsupported command %+v", message.Command)
|
||||||
session.sendMessage(message.NewErrorServerMessage(UnsupportedCommand))
|
session.sendMessage(message.NewErrorServerMessage(UnsupportedCommand))
|
||||||
|
|
Loading…
Reference in a new issue