/
consumer.go
123 lines (103 loc) · 2.66 KB
/
consumer.go
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package mpegts
import (
"io"
"github.com/AlexxIT/go2rtc/pkg/aac"
"github.com/AlexxIT/go2rtc/pkg/core"
"github.com/AlexxIT/go2rtc/pkg/h264"
"github.com/AlexxIT/go2rtc/pkg/h265"
"github.com/pion/rtp"
)
type Consumer struct {
core.SuperConsumer
muxer *Muxer
wr *core.WriteBuffer
}
func NewConsumer() *Consumer {
c := &Consumer{
muxer: NewMuxer(),
wr: core.NewWriteBuffer(nil),
}
c.Medias = []*core.Media{
{
Kind: core.KindVideo,
Direction: core.DirectionSendonly,
Codecs: []*core.Codec{
{Name: core.CodecH264},
{Name: core.CodecH265},
},
},
{
Kind: core.KindAudio,
Direction: core.DirectionSendonly,
Codecs: []*core.Codec{
{Name: core.CodecAAC},
},
},
}
return c
}
func (c *Consumer) AddTrack(media *core.Media, codec *core.Codec, track *core.Receiver) error {
sender := core.NewSender(media, track.Codec)
switch track.Codec.Name {
case core.CodecH264:
pid := c.muxer.AddTrack(StreamTypeH264)
sender.Handler = func(pkt *rtp.Packet) {
b := c.muxer.GetPayload(pid, pkt.Timestamp, pkt.Payload)
if n, err := c.wr.Write(b); err == nil {
c.Send += n
}
}
if track.Codec.IsRTP() {
sender.Handler = h264.RTPDepay(track.Codec, sender.Handler)
} else {
sender.Handler = h264.RepairAVCC(track.Codec, sender.Handler)
}
case core.CodecH265:
pid := c.muxer.AddTrack(StreamTypeH265)
sender.Handler = func(pkt *rtp.Packet) {
b := c.muxer.GetPayload(pid, pkt.Timestamp, pkt.Payload)
if n, err := c.wr.Write(b); err == nil {
c.Send += n
}
}
if track.Codec.IsRTP() {
sender.Handler = h265.RTPDepay(track.Codec, sender.Handler)
}
case core.CodecAAC:
pid := c.muxer.AddTrack(StreamTypeAAC)
// convert timestamp to 90000Hz clock
dt := 90000 / float64(track.Codec.ClockRate)
sender.Handler = func(pkt *rtp.Packet) {
pts := uint32(float64(pkt.Timestamp) * dt)
b := c.muxer.GetPayload(pid, pts, pkt.Payload)
if n, err := c.wr.Write(b); err == nil {
c.Send += n
}
}
if track.Codec.IsRTP() {
sender.Handler = aac.RTPToADTS(track.Codec, sender.Handler)
} else {
sender.Handler = aac.EncodeToADTS(track.Codec, sender.Handler)
}
}
sender.HandleRTP(track)
c.Senders = append(c.Senders, sender)
return nil
}
func (c *Consumer) WriteTo(wr io.Writer) (int64, error) {
b := c.muxer.GetHeader()
if _, err := wr.Write(b); err != nil {
return 0, err
}
return c.wr.WriteTo(wr)
}
func (c *Consumer) Stop() error {
_ = c.SuperConsumer.Close()
return c.wr.Close()
}
func TimestampFromRTP(rtp *rtp.Packet, codec *core.Codec) {
if codec.ClockRate == ClockRate {
return
}
rtp.Timestamp = uint32(float64(rtp.Timestamp) / float64(codec.ClockRate) * ClockRate)
}