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Add support backchannel for Tapo source

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This commit is contained in:
Alexey Khit
2023-02-16 11:29:10 +03:00
parent 9fd783793e
commit 70c415a1d8
8 changed files with 498 additions and 76 deletions
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pkg/mpegts/helpers.go
+8 -8
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@@ -14,6 +14,7 @@ const (
)
const (
StreamTypePrivate = 0x06 // PCMU or PCMA from FFmpeg
StreamTypeAAC = 0x0F
StreamTypeH264 = 0x1B
StreamTypePCMATapo = 0x90
@@ -93,7 +94,7 @@ func (p *PES) GetPacket() (pkt *rtp.Packet) {
flags := p.Payload[1]
optSize := p.Payload[2] // optional fields
p.Payload = p.Payload[minHeaderSize+optSize:]
payload := p.Payload[minHeaderSize+optSize:]
switch p.StreamType {
case StreamTypeH264:
@@ -101,7 +102,7 @@ func (p *PES) GetPacket() (pkt *rtp.Packet) {
const hasPTS = 0b1000_0000
if flags&hasPTS != 0 {
ts = uint32(ParseTime(p.Payload[minHeaderSize:]))
ts = ParseTime(p.Payload[minHeaderSize:])
}
pkt = &rtp.Packet{
@@ -109,12 +110,12 @@ func (p *PES) GetPacket() (pkt *rtp.Packet) {
PayloadType: p.StreamType,
Timestamp: ts,
},
Payload: h264.AnnexB2AVC(p.Payload),
Payload: h264.AnnexB2AVC(payload),
}
case StreamTypePCMATapo:
p.Sequence++
p.Timestamp += uint32(len(p.Payload))
p.Timestamp += uint32(len(payload))
pkt = &rtp.Packet{
Header: rtp.Header{
@@ -123,7 +124,7 @@ func (p *PES) GetPacket() (pkt *rtp.Packet) {
SequenceNumber: p.Sequence,
Timestamp: p.Timestamp,
},
Payload: p.Payload,
Payload: payload,
}
}
@@ -155,9 +156,8 @@ func (p *PES) GetPacket() (pkt *rtp.Packet) {
return
}
func ParseTime(b []byte) time.Duration {
ts := (uint64(b[0]) >> 1 & 0x7 << 30) | (uint64(b[1]) << 22) | (uint64(b[2]) >> 1 & 0x7F << 15) | (uint64(b[3]) << 7) | (uint64(b[4]) >> 1 & 0x7F)
return time.Duration(ts)
func ParseTime(b []byte) uint32 {
return (uint32(b[0]&0x0E) << 29) | (uint32(b[1]) << 22) | (uint32(b[2]&0xFE) << 14) | (uint32(b[3]) << 7) | (uint32(b[4]) >> 1)
}
func GetMedia(pkt *rtp.Packet) *streamer.Media {