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mcu_janus_remote_publisher.go
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mcu_janus_remote_publisher.go
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/**
* Standalone signaling server for the Nextcloud Spreed app.
* Copyright (C) 2024 struktur AG
*
* @author Joachim Bauch <[email protected]>
*
* @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 (
"context"
"log"
"sync/atomic"
"github.com/notedit/janus-go"
)
type mcuJanusRemotePublisher struct {
mcuJanusPublisher
ref atomic.Int64
port int
rtcpPort int
}
func (p *mcuJanusRemotePublisher) addRef() int64 {
return p.ref.Add(1)
}
func (p *mcuJanusRemotePublisher) release() bool {
return p.ref.Add(-1) == 0
}
func (p *mcuJanusRemotePublisher) Port() int {
return p.port
}
func (p *mcuJanusRemotePublisher) RtcpPort() int {
return p.rtcpPort
}
func (p *mcuJanusRemotePublisher) handleEvent(event *janus.EventMsg) {
if videoroom := getPluginStringValue(event.Plugindata, pluginVideoRoom, "videoroom"); videoroom != "" {
ctx := context.TODO()
switch videoroom {
case "destroyed":
log.Printf("Remote publisher %d: associated room has been destroyed, closing", p.handleId)
go p.Close(ctx)
case "slow_link":
// Ignore, processed through "handleSlowLink" in the general events.
default:
log.Printf("Unsupported videoroom remote publisher event in %d: %+v", p.handleId, event)
}
} else {
log.Printf("Unsupported remote publisher event in %d: %+v", p.handleId, event)
}
}
func (p *mcuJanusRemotePublisher) handleHangup(event *janus.HangupMsg) {
log.Printf("Remote publisher %d received hangup (%s), closing", p.handleId, event.Reason)
go p.Close(context.Background())
}
func (p *mcuJanusRemotePublisher) handleDetached(event *janus.DetachedMsg) {
log.Printf("Remote publisher %d received detached, closing", p.handleId)
go p.Close(context.Background())
}
func (p *mcuJanusRemotePublisher) handleConnected(event *janus.WebRTCUpMsg) {
log.Printf("Remote publisher %d received connected", p.handleId)
p.mcu.publisherConnected.Notify(getStreamId(p.id, p.streamType))
}
func (p *mcuJanusRemotePublisher) handleSlowLink(event *janus.SlowLinkMsg) {
if event.Uplink {
log.Printf("Remote publisher %s (%d) is reporting %d lost packets on the uplink (Janus -> client)", p.listener.PublicId(), p.handleId, event.Lost)
} else {
log.Printf("Remote publisher %s (%d) is reporting %d lost packets on the downlink (client -> Janus)", p.listener.PublicId(), p.handleId, event.Lost)
}
}
func (p *mcuJanusRemotePublisher) NotifyReconnected() {
ctx := context.TODO()
handle, session, roomId, _, err := p.mcu.getOrCreatePublisherHandle(ctx, p.id, p.streamType, p.bitrate)
if err != nil {
log.Printf("Could not reconnect remote publisher %s: %s", p.id, err)
// TODO(jojo): Retry
return
}
p.handle = handle
p.handleId = handle.Id
p.session = session
p.roomId = roomId
log.Printf("Remote publisher %s reconnected on handle %d", p.id, p.handleId)
}
func (p *mcuJanusRemotePublisher) Close(ctx context.Context) {
if !p.release() {
return
}
p.mu.Lock()
if handle := p.handle; handle != nil {
response, err := p.handle.Request(ctx, map[string]interface{}{
"request": "remove_remote_publisher",
"room": p.roomId,
"id": streamTypeUserIds[p.streamType],
})
if err != nil {
log.Printf("Error removing remote publisher %s in room %d: %s", p.id, p.roomId, err)
} else {
log.Printf("Removed remote publisher: %+v", response)
}
if p.roomId != 0 {
destroy_msg := map[string]interface{}{
"request": "destroy",
"room": p.roomId,
}
if _, err := handle.Request(ctx, destroy_msg); err != nil {
log.Printf("Error destroying room %d: %s", p.roomId, err)
} else {
log.Printf("Room %d destroyed", p.roomId)
}
p.mcu.mu.Lock()
delete(p.mcu.remotePublishers, getStreamId(p.id, p.streamType))
p.mcu.mu.Unlock()
p.roomId = 0
}
}
p.closeClient(ctx)
p.mu.Unlock()
}