test transcode slow

This commit is contained in:
deepch 2023-03-22 21:59:06 +03:00
parent c923e0010b
commit 175afae1c1
4 changed files with 115 additions and 8 deletions

View File

@ -0,0 +1,64 @@
package main
import (
"context"
"github.com/deepch/vdk/format/rtspv2"
"github.com/deepch/vdk/format/ts"
"log"
"os/exec"
"time"
)
func main() {
RTSPClient, err := rtspv2.Dial(rtspv2.RTSPClientOptions{URL: "rtsp://url", DisableAudio: true, DialTimeout: 3 * time.Second, ReadWriteTimeout: 5 * time.Second, Debug: true, OutgoingProxy: false})
if err != nil {
panic(err)
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
cmd := exec.CommandContext(ctx, "ffmpeg", "-flags", "low_delay", "-analyzeduration", "1", "-fflags", "-nobuffer", "-probesize", "1024k", "-f", "mpegts", "-i", "-", "-vcodec", "libx264", "-preset", "ultrafast", "-bf", "0", "-f", "mpegts", "-max_muxing_queue_size", "400", "-pes_payload_size", "0", "pipe:1")
inPipe, _ := cmd.StdinPipe()
outPipe, _ := cmd.StdoutPipe()
//cmd.Stderr = os.Stderr
mux := ts.NewMuxer(inPipe)
demuxer := ts.NewDemuxer(outPipe)
codec := RTSPClient.CodecData
mux.WriteHeader(codec)
go func() {
imNewCodec, err := demuxer.Streams()
log.Println("new codec data", imNewCodec, err)
for i, data := range imNewCodec {
log.Println(i, data)
}
for {
pkt, err := demuxer.ReadPacket()
if err != nil {
log.Panic(err)
}
log.Println("im new pkt ===>", pkt.Idx, pkt.Time)
}
}()
cmd.Start()
var start bool
for {
select {
case signals := <-RTSPClient.Signals:
switch signals {
case rtspv2.SignalCodecUpdate:
//?
case rtspv2.SignalStreamRTPStop:
return
}
case packetAV := <-RTSPClient.OutgoingPacketQueue:
if packetAV.IsKeyFrame {
start = true
}
if !start {
continue
}
if err = mux.WritePacket(*packetAV); err != nil {
return
}
}
}
}

View File

@ -376,7 +376,7 @@ func (self *ElemStreamDesc) parseDescHdr(b []byte, offset int) (n int, tag uint8
return
}
func ReadFileAtoms(r io.ReadSeeker) (atoms []Atom, err error) {
func ReadFileAtoms(r io.ReadSeeker, name string) (atoms []Atom, err error) {
for {
offset, _ := r.Seek(0, 1)
taghdr := make([]byte, 8)
@ -387,6 +387,12 @@ func ReadFileAtoms(r io.ReadSeeker) (atoms []Atom, err error) {
return
}
size := pio.U32BE(taghdr[0:])
if size == 0 {
err = fmt.Errorf("bad hdr size")
return
}
tag := Tag(pio.U32BE(taghdr[4:]))
var atom Atom

View File

@ -2,6 +2,7 @@ package ts
import (
"fmt"
"github.com/deepch/vdk/codec/h265parser"
"io"
"time"
@ -11,7 +12,7 @@ import (
"github.com/deepch/vdk/format/ts/tsio"
)
var CodecTypes = []av.CodecType{av.H264, av.AAC}
var CodecTypes = []av.CodecType{av.H264, av.H265, av.AAC}
type Muxer struct {
w io.Writer
@ -123,6 +124,11 @@ func (self *Muxer) WritePATPMT() (err error) {
StreamType: tsio.ElementaryStreamTypeH264,
ElementaryPID: stream.pid,
})
case av.H265:
elemStreams = append(elemStreams, tsio.ElementaryStreamInfo{
StreamType: tsio.ElementaryStreamTypeH265,
ElementaryPID: stream.pid,
})
}
}
@ -210,6 +216,36 @@ func (self *Muxer) WritePacket(pkt av.Packet) (err error) {
n := tsio.FillPESHeader(self.peshdr, tsio.StreamIdH264, -1, pkt.Time+pkt.CompositionTime, pkt.Time)
datav[0] = self.peshdr[:n]
if err = stream.tsw.WritePackets(self.w, datav, pkt.Time, pkt.IsKeyFrame, false); err != nil {
return
}
case av.H265:
codec := stream.CodecData.(h265parser.CodecData)
nalus := self.nalus[:0]
if pkt.IsKeyFrame {
nalus = append(nalus, codec.SPS())
nalus = append(nalus, codec.PPS())
nalus = append(nalus, codec.VPS())
}
pktnalus, _ := h265parser.SplitNALUs(pkt.Data)
for _, nalu := range pktnalus {
nalus = append(nalus, nalu)
}
datav := self.datav[:1]
for i, nalu := range nalus {
if i == 0 {
datav = append(datav, h265parser.AUDBytes)
} else {
datav = append(datav, h265parser.StartCodeBytes)
}
datav = append(datav, nalu)
}
n := tsio.FillPESHeader(self.peshdr, tsio.StreamIdH264, -1, pkt.Time+pkt.CompositionTime, pkt.Time)
datav[0] = self.peshdr[:n]
if err = stream.tsw.WritePackets(self.w, datav, pkt.Time, pkt.IsKeyFrame, false); err != nil {
return
}

View File

@ -36,6 +36,7 @@ const (
ElementaryStreamTypeH264 = 0x1B
ElementaryStreamTypeAdtsAAC = 0x0F
ElementaryStreamTypeAlignmentDescriptor = 0x06
ElementaryStreamTypeH265 = 0x24
)
type PATEntry struct {
@ -516,7 +517,7 @@ func NewTSWriter(pid uint16) *TSWriter {
return w
}
//TSHeader func
// TSHeader func
type TSHeader struct {
PID uint
PCR uint64
@ -528,7 +529,7 @@ type TSHeader struct {
HeaderLength uint
}
//WriteTSHeader func
// WriteTSHeader func
func WriteTSHeader(w io.Writer, element TSHeader, dataLength int) (written int, err error) {
var flags, extFlags uint
@ -688,13 +689,13 @@ func makeRepeatValBytes(val byte, n int) []byte {
return b
}
//WriteRepeatVal func
// WriteRepeatVal func
func WriteRepeatVal(w io.Writer, val byte, n int) (err error) {
_, err = w.Write(makeRepeatValBytes(val, n))
return
}
//WriteUInt64 func
// WriteUInt64 func
func WriteUInt64(w io.Writer, val uint64, n int) (err error) {
var b [8]byte
for i := n - 1; i >= 0; i-- {
@ -707,12 +708,12 @@ func WriteUInt64(w io.Writer, val uint64, n int) (err error) {
return
}
//WriteUInt func
// WriteUInt func
func WriteUInt(w io.Writer, val uint, n int) (err error) {
return WriteUInt64(w, uint64(val), n)
}
//PCRToUInt func
// PCRToUInt func
func PCRToUInt(pcr uint64) uint64 {
base := pcr / 300
ext := pcr % 300