38 lines
975 B
Go
38 lines
975 B
Go
|
package webrtc
|
||
|
|
|
||
|
|
import (
|
||
|
|
"github.com/pion/rtp"
|
||
|
|
"github.com/pion/webrtc/v4"
|
||
|
|
)
|
||
|
|
|
||
|
|
// forwardRTP reads packets from sub and writes them to the correct track
|
||
|
|
// based on payload type (H.264 → video, Opus → audio). Payload-type
|
||
|
|
// inspection is the simplest M1 approach; M2 will switch to per-track
|
||
|
|
// source channels once the process resolver manages separate video/audio
|
||
|
|
// UDP ports.
|
||
|
|
func forwardRTP(done <-chan struct{}, sub <-chan *rtp.Packet,
|
||
|
|
video, audio *webrtc.TrackLocalStaticRTP) {
|
||
|
|
for {
|
||
|
|
select {
|
||
|
|
case <-done:
|
||
|
|
return
|
||
|
|
case pkt, ok := <-sub:
|
||
|
|
if !ok {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
// Pion default H.264 PT = 102, Opus PT = 111. If the publisher
|
||
|
|
// uses different PTs we'll revisit in M2 — for M1 PoC we
|
||
|
|
// configure FFmpeg to these values explicitly in the publisher
|
||
|
|
// script.
|
||
|
|
switch pkt.PayloadType {
|
||
|
|
case 102:
|
||
|
|
_ = video.WriteRTP(pkt)
|
||
|
|
case 111:
|
||
|
|
_ = audio.WriteRTP(pkt)
|
||
|
|
default:
|
||
|
|
// Unknown PT — drop. Log in M3.
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|