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producer.go
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producer.go
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package rtsp
import (
"encoding/json"
"errors"
"github.com/AlexxIT/go2rtc/pkg/core"
)
func (c *Conn) GetTrack(media *core.Media, codec *core.Codec) (*core.Receiver, error) {
core.Assert(media.Direction == core.DirectionRecvonly)
for _, track := range c.Receivers {
if track.Codec == codec {
return track, nil
}
}
c.stateMu.Lock()
defer c.stateMu.Unlock()
if c.state == StatePlay {
if err := c.Reconnect(); err != nil {
return nil, err
}
}
channel, err := c.SetupMedia(media)
if err != nil {
return nil, err
}
c.state = StateSetup
track := core.NewReceiver(media, codec)
track.ID = channel
c.Receivers = append(c.Receivers, track)
return track, nil
}
func (c *Conn) Start() (err error) {
core.Assert(c.mode == core.ModeActiveProducer || c.mode == core.ModePassiveProducer)
for {
ok := false
c.stateMu.Lock()
switch c.state {
case StateNone:
err = nil
case StateConn:
err = errors.New("start from CONN state")
case StateSetup:
switch c.mode {
case core.ModeActiveProducer:
err = c.Play()
case core.ModePassiveProducer:
err = nil
default:
err = errors.New("start from wrong mode: " + c.mode.String())
}
if err == nil {
c.state = StatePlay
ok = true
}
}
c.stateMu.Unlock()
if !ok {
return
}
// Handler can return different states:
// 1. None after PLAY should exit without error
// 2. Play after PLAY should exit from Start with error
// 3. Setup after PLAY should Play once again
err = c.Handle()
}
}
func (c *Conn) Stop() (err error) {
for _, receiver := range c.Receivers {
receiver.Close()
}
for _, sender := range c.Senders {
sender.Close()
}
c.stateMu.Lock()
if c.state != StateNone {
c.state = StateNone
err = c.Close()
}
c.stateMu.Unlock()
return
}
func (c *Conn) MarshalJSON() ([]byte, error) {
return json.Marshal(c.Connection)
}
func (c *Conn) Reconnect() error {
c.Fire("RTSP reconnect")
// close current session
_ = c.Close()
// start new session
if err := c.Dial(); err != nil {
return err
}
if err := c.Describe(); err != nil {
return err
}
// restore previous medias
for _, receiver := range c.Receivers {
if _, err := c.SetupMedia(receiver.Media); err != nil {
return err
}
}
for _, sender := range c.Senders {
if _, err := c.SetupMedia(sender.Media); err != nil {
return err
}
}
return nil
}