mccoyst / ogg Goto Github PK
View Code? Open in Web Editor NEWGo package for encoding/decoding OGG streams
License: MIT License
Go package for encoding/decoding OGG streams
License: MIT License
See #3.
i have ffmpeg transcode stdout
cmd:=exec.Command("ffmpeg","-re", "-i","http://ice912.echo.msk.ru:9120/stream", "-acodec","libopus","-ab","32k", "-ar","48000","-f","s16le","pipe:1")
serr, efdd := cmd.StderrPipe()
stdp, perr := cmd.StdoutPipe()
fmt.Println("ffmpeg start")
//cmder:=cmd.Run()
cmder := cmd.Start()
time.Sleep(250 * time.Millisecond)
fmt.Printf("ffmpeg start %+v", cmd.ProcessState)
//o,e:=cmd.CombinedOutput()
//fmt.Printf("ffmpeg stop,%s,,err %s\n",o,e)
f, f_err := os.OpenFile("/home/kino/opustest2.ogg", os.O_CREATE|os.O_RDWR, os.ModePerm)
if f_err != nil {
return f_err
}
fibd := bufio.NewWriter(f)
buffer := bufio.NewReader(stdp)
fmt.Printf("buf init buffered %s", buffer.Buffered())
if perr != nil {
fmt.Printf("process create err %s,", perr)
return perr
}
if cmder != nil {
return cmder
}
// Sleep for a specified amount of time before playing the sound
time.Sleep(250 * time.Millisecond)
and i can't understud how incopsulate opus in ogg.
please help me
It's actually good now, so write it up.
I have just encoded a wav file to ogg using oggenc version 1.4.0. This package reports a bad CRC when reading that file. Same results with various other .ogg files I have downloaded from the Internet. I've been looking at the spec and the code and can't see anything obviously wrong.
00000000: 4f67 6753 0002 0000 0000 0000 0000 50d7 OggS..........P.
00000010: 2f8d 0000 0000 9774 7857 0113 4f70 7573 /......txW..Opus
00000020: 4865 6164 0102 3801 80bb 0000 0000 004f Head..8........O
00000030: 6767 5300 0000 0000 0000 0000 0050 d72f ggS..........P./
00000040: 8d01 0000 0032 eb58 1701 3f4f 7075 7354 .....2.X..?OpusT
00000050: 6167 730d 0000 004c 6176 6635 382e 3736 ags....Lavf58.76
00000060: 2e31 3030 0100 0000 1e00 0000 656e 636f .100........enco
00000070: 6465 723d 4c61 7663 3538 2e31 3334 2e31 der=Lavc58.134.1
00000080: 3030 206c 6962 6f70 7573 4f67 6753 0000 00 libopusOggS..
d := ogg.NewDecoder(bytes.NewReader([]byte{0x4f, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0xd7, 0x2f, 0x8d, 0x00, 0x00, 0x00, 0x00, 0x97, 0x74, 0x78, 0x57, 0x01, 0x13, 0x4f, 0x70, 0x75, 0x73, 0x48, 0x65, 0x61, 0x64, 0x01, 0x02, 0x38, 0x01, 0x80, 0xbb, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4f, 0x67, 0x67, 0x53, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x50, 0xd7, 0x2f, 0x8d, 0x01, 0x00, 0x00, 0x00, 0x32, 0xeb, 0x58, 0x17, 0x01, 0x3f, 0x4f, 0x70, 0x75, 0x73, 0x54, 0x61, 0x67, 0x73, 0x0d, 0x00, 0x00, 0x00, 0x4c, 0x61, 0x76, 0x66, 0x35, 0x38, 0x2e, 0x37, 0x36, 0x2e, 0x31, 0x30, 0x30, 0x01, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x65, 0x6e, 0x63, 0x6f, 0x64, 0x65, 0x72, 0x3d, 0x4c, 0x61, 0x76, 0x63, 0x35, 0x38, 0x2e, 0x31, 0x33, 0x34, 0x2e, 0x31, 0x30, 0x30, 0x20, 0x6c, 0x69, 0x62, 0x6f, 0x70, 0x75, 0x73}))
for {
p, err := d.Decode()
if err != nil {
if errors.Is(err, io.EOF) {
break
}
panic(err)
}
fmt.Println(p.Type, p.Granule, p.Serial, p.Packets)
}
2 0 2368722768 [[79 112 117 115 72 101 97 100 1 2 56 1 128 187 0 0 0 0 0]]
0 0 2368722768 [[79 112 117 115 84 97 103 115 13 0 0 0 76 97 118 102 53 56 46 55 54 46 49 48 48 1 0 0 0 30 0 0 0 101 110 99 111 100 101 114 61 76 97 118 99 53 56 46 49 51 52 46 49 48 48 32 108 105 98 111 112 117 115]]
package main
import (
"fmt"
"os"
"github.com/mccoyst/ogg"
)
func main() {
f, err := os.Open(os.Args[1])
if err != nil {
panic(err)
}
decoder := ogg.NewDecoder(f)
var encoder *ogg.Encoder
for {
page, err := decoder.Decode()
if err != nil {
fmt.Fprint(os.Stderr, err)
break
}
if encoder == nil {
encoder = ogg.NewEncoder(page.Serial, os.Stdout)
encoder.EncodeBOS(page.Granule, page.Packet)
} else {
encoder.Encode(page.Granule, page.Packet)
}
}
}
./copy a.ogg > b.ogg
This code decode a stream, encodes it to stdout.
ogginfo
works well with my original stream, but doesn't handle the output stream.
Link to godoc.org, etc.
Look at this more closely: https://freac.org/developer-blog-mainmenu-9/14-freac/277-fastcrc
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