Total rewrite mov/mp4 encoder

pkg/mp4/v2/segment.go

@@ -0,0 +1,143 @@
+package mp4
+
+import (
+	"encoding/json"
+	"github.com/AlexxIT/go2rtc/pkg/h264"
+	"github.com/AlexxIT/go2rtc/pkg/h265"
+	"github.com/AlexxIT/go2rtc/pkg/streamer"
+	"github.com/pion/rtp"
+	"sync/atomic"
+)
+
+type Segment struct {
+	streamer.Element
+
+	Medias     []*streamer.Media
+	UserAgent  string
+	RemoteAddr string
+
+	MimeType     string
+	OnlyKeyframe bool
+
+	send uint32
+}
+
+func (c *Segment) GetMedias() []*streamer.Media {
+	if c.Medias != nil {
+		return c.Medias
+	}
+
+	// default medias
+	return []*streamer.Media{
+		{
+			Kind:      streamer.KindVideo,
+			Direction: streamer.DirectionRecvonly,
+			Codecs: []*streamer.Codec{
+				{Name: streamer.CodecH264},
+				{Name: streamer.CodecH265},
+			},
+		},
+	}
+}
+
+func (c *Segment) AddTrack(media *streamer.Media, track *streamer.Track) *streamer.Track {
+	muxer := &Muxer{}
+
+	codecs := []*streamer.Codec{track.Codec}
+
+	init, err := muxer.GetInit(codecs)
+	if err != nil {
+		return nil
+	}
+
+	c.MimeType = muxer.MimeType(codecs)
+
+	switch track.Codec.Name {
+	case streamer.CodecH264:
+		var push streamer.WriterFunc
+
+		if c.OnlyKeyframe {
+			push = func(packet *rtp.Packet) error {
+				if !h264.IsKeyframe(packet.Payload) {
+					return nil
+				}
+
+				buf := muxer.Marshal(0, packet)
+				atomic.AddUint32(&c.send, uint32(len(buf)))
+				c.Fire(append(init, buf...))
+
+				return nil
+			}
+		} else {
+			var buf []byte
+
+			push = func(packet *rtp.Packet) error {
+				if h264.IsKeyframe(packet.Payload) {
+					// fist frame - send only IFrame
+					// other frames - send IFrame and all PFrames
+					if buf == nil {
+						buf = append(buf, init...)
+						b := muxer.Marshal(0, packet)
+						buf = append(buf, b...)
+					}
+
+					atomic.AddUint32(&c.send, uint32(len(buf)))
+					c.Fire(buf)
+
+					buf = buf[:0]
+					buf = append(buf, init...)
+					muxer.Reset()
+				}
+
+				if buf != nil {
+					b := muxer.Marshal(0, packet)
+					buf = append(buf, b...)
+				}
+
+				return nil
+			}
+		}
+
+		var wrapper streamer.WrapperFunc
+		if track.Codec.IsRTP() {
+			wrapper = h264.RTPDepay(track)
+		} else {
+			wrapper = h264.RepairAVC(track)
+		}
+		push = wrapper(push)
+
+		return track.Bind(push)
+
+	case streamer.CodecH265:
+		push := func(packet *rtp.Packet) error {
+			if !h265.IsKeyframe(packet.Payload) {
+				return nil
+			}
+
+			buf := muxer.Marshal(0, packet)
+			atomic.AddUint32(&c.send, uint32(len(buf)))
+			c.Fire(append(init, buf...))
+
+			return nil
+		}
+
+		if track.Codec.IsRTP() {
+			wrapper := h265.RTPDepay(track)
+			push = wrapper(push)
+		}
+
+		return track.Bind(push)
+	}
+
+	panic("unsupported codec")
+}
+
+func (c *Segment) MarshalJSON() ([]byte, error) {
+	info := &streamer.Info{
+		Type:       "WS/MP4 client",
+		RemoteAddr: c.RemoteAddr,
+		UserAgent:  c.UserAgent,
+		Send:       atomic.LoadUint32(&c.send),
+	}
+	return json.Marshal(info)
+}