Add support pipe to exec source

pkg/mpegts/helpers.go

@@ -137,7 +137,7 @@ func (p *PES) GetPacket() (pkt *rtp.Packet) {
 		pkt = &rtp.Packet{
 			Header: rtp.Header{
 				PayloadType: p.StreamType,
-				Timestamp:   uint32(time.Duration(time.Now().UnixNano()) * 90000 / time.Second),
+				Timestamp:   core.Now90000(),
 			},
 			Payload: payload,
 		}

pkg/mpegts/reader.go

@@ -129,6 +129,14 @@ func (r *Reader) GetPacket() *rtp.Packet {
 	return nil
 }
 
+func (r *Reader) GetStreamTypes() []byte {
+	types := make([]byte, 0, len(r.pes))
+	for _, pes := range r.pes {
+		types = append(types, pes.StreamType)
+	}
+	return types
+}
+
 // Sync - search sync byte
 func (r *Reader) Sync() bool {
 	// drop previous readed packet