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84 lines
2.1 KiB
84 lines
2.1 KiB
package webrtc
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import (
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"fmt"
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"time"
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"github.com/pion/rtcp"
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. "github.com/pion/webrtc/v3"
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"go.uber.org/zap"
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. "m7s.live/engine/v4"
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. "m7s.live/engine/v4/track"
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)
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type WebRTCPublisher struct {
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Publisher
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WebRTCIO
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}
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func (puber *WebRTCPublisher) OnEvent(event any) {
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switch event.(type) {
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case IPublisher:
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puber.OnTrack(puber.onTrack)
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}
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puber.Publisher.OnEvent(event)
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}
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func (puber *WebRTCPublisher) onTrack(track *TrackRemote, receiver *RTPReceiver) {
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puber.Info("onTrack", zap.String("kind", track.Kind().String()), zap.Uint8("payloadType", uint8(track.Codec().PayloadType)))
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if codec := track.Codec(); track.Kind() == RTPCodecTypeAudio {
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if puber.AudioTrack == nil {
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switch codec.PayloadType {
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case 8:
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puber.AudioTrack = NewG711(puber.Stream, true)
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case 0:
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puber.AudioTrack = NewG711(puber.Stream, false)
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default:
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puber.AudioTrack = nil
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return
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}
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}
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for {
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rtpItem := puber.AudioTrack.GetRTPFromPool()
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if i, _, err := track.Read(rtpItem.Value.Raw[:1460]); err == nil {
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rtpItem.Value.Unmarshal(rtpItem.Value.Raw[:i])
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puber.AudioTrack.WriteRTP(rtpItem)
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} else {
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puber.Info("track stop", zap.String("kind", track.Kind().String()), zap.Error(err))
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rtpItem.Recycle()
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return
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}
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}
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} else {
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go puber.writeRTCP(track)
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if puber.VideoTrack == nil {
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puber.VideoTrack = NewH264(puber.Stream, byte(codec.PayloadType))
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}
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for {
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rtpItem := puber.VideoTrack.GetRTPFromPool()
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if i, _, err := track.Read(rtpItem.Value.Raw[:1460]); err == nil {
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rtpItem.Value.Unmarshal(rtpItem.Value.Raw[:i])
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puber.VideoTrack.WriteRTP(rtpItem)
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} else {
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puber.Info("track stop", zap.String("kind", track.Kind().String()), zap.Error(err))
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rtpItem.Recycle()
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return
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}
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}
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}
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}
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func (puber *WebRTCPublisher) writeRTCP(track *TrackRemote) {
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ticker := time.NewTicker(webrtcConfig.PLI)
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defer ticker.Stop()
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for {
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select {
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case <-ticker.C:
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if rtcpErr := puber.WriteRTCP([]rtcp.Packet{&rtcp.PictureLossIndication{MediaSSRC: uint32(track.SSRC())}}); rtcpErr != nil {
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fmt.Println(rtcpErr)
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}
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case <-puber.Done():
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return
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}
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}
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}
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