func writeStreamFrame(rframe flv.Frame, baseDts int) (err error) {
if streamsWriters == nil {
streamsWriters = make(map[uint32]*streamWriter)
}
stream := rframe.GetStream()
var stWr *streamWriter
if _, ok := streamsWriters[stream]; !ok {
log.Printf("Write new stream %d from dts %d", stream, baseDts)
splitFileNumber++
stWr = new(streamWriter)
stWr.fileName = fmt.Sprintf("n-%05d-ts-%d-s-%d.flv", splitFileNumber, baseDts, stream)
stWr.fd, err = os.Create(stWr.fileName)
if err != nil {
log.Fatalf("Cannot open file %s: %s", stWr.fileName, err.Error())
}
stWr.writer = flv.NewWriter(stWr.fd)
stWr.writer.WriteHeader(commonHeader)
stWr.firstDts = baseDts
stWr.offsetDts = rframe.GetDts()
streamsWriters[stream] = stWr
} else {
stWr = streamsWriters[stream]
}
rframe.SetDts(rframe.GetDts() - stWr.offsetDts)
stWr.writer.WriteFrame(rframe)
stWr.lastDts = baseDts
return nil
}
func concatFiles() {
log.Printf("Concat files: %#v", inFiles)
if outFile == "" {
log.Fatal("No output file")
}
outF, err := os.Create(outFile)
if err != nil {
log.Fatal(err)
}
defer outF.Close()
frW := flv.NewWriter(outF)
frWout := make(map[flv.TagType]*flv.FlvWriter)
frWout[flv.TAG_TYPE_VIDEO] = frW
frWout[flv.TAG_TYPE_AUDIO] = frW
frWout[flv.TAG_TYPE_META] = frW
wh := true // write header to output after read of first file
offset := 0
for _, fn := range inFiles {
inF, err := os.Open(fn)
if err != nil {
log.Fatal(err)
}
defer inF.Close()
frReader, header, err := openFrameReader(inF)
if err != nil {
log.Fatal(err)
}
if wh {
frW.WriteHeader(header)
wh = false
commonHeader = header
}
offset = writeFrames(frReader, frWout, offset)
}
}
func main() {
flag.Usage = usage
flag.Parse()
defer closeSplitWriters()
if isConcat {
concatFiles()
return
}
if inFile == "" {
log.Fatal("No input file")
}
inF, err := os.Open(inFile)
if err != nil {
log.Fatal(err)
}
defer inF.Close()
frReader, header, err := openFrameReader(inF)
if err != nil {
log.Fatal(err)
}
commonHeader = header
if printInfo {
printMetaData(frReader, printInfoKeys)
return
} else if flvDump {
createMetaKeyframes(frReader)
} else if splitContent {
if outcFiles[flv.TAG_TYPE_VIDEO] == "" && outcFiles[flv.TAG_TYPE_AUDIO] == "" && outcFiles[flv.TAG_TYPE_META] == "" {
log.Fatal("No any split output file")
}
type splitWriter struct {
FileName string
Writer *flv.FlvWriter
}
frFW := make(map[flv.TagType]*splitWriter)
frFW[flv.TAG_TYPE_VIDEO] = &splitWriter{FileName: outcFiles[flv.TAG_TYPE_VIDEO], Writer: nil}
frFW[flv.TAG_TYPE_AUDIO] = &splitWriter{FileName: outcFiles[flv.TAG_TYPE_AUDIO], Writer: nil}
frFW[flv.TAG_TYPE_META] = &splitWriter{FileName: outcFiles[flv.TAG_TYPE_META], Writer: nil}
frW := make(map[flv.TagType]*flv.FlvWriter)
for k, _ := range frFW {
var of string
switch k {
case flv.TAG_TYPE_VIDEO:
of = outcFiles[flv.TAG_TYPE_VIDEO]
case flv.TAG_TYPE_AUDIO:
of = outcFiles[flv.TAG_TYPE_AUDIO]
case flv.TAG_TYPE_META:
of = outcFiles[flv.TAG_TYPE_META]
}
var pW *flv.FlvWriter = nil
for wk, wv := range frFW {
if wv.FileName == of {
if wv.Writer != nil {
log.Printf("Write %s to existing %s file %s", k, wk, of)
pW = wv.Writer
break
}
}
}
if pW != nil {
frW[k] = pW
} else {
outF, err := os.Create(of)
if err != nil {
log.Fatal(err)
}
log.Printf("Write %s to %s", k, of)
frFW[k].Writer = flv.NewWriter(outF)
frFW[k].Writer.WriteHeader(header)
frW[k] = frFW[k].Writer
}
}
for _, v := range frW {
defer v.OutFile.Close()
}
writeFrames(frReader, frW, 0)
} else {
if outFile == "" {
log.Fatal("No output file")
}
outF, err := os.Create(outFile)
if err != nil {
log.Fatal(err)
}
defer outF.Close()
frWriter := flv.NewWriter(outF)
frWriter.WriteHeader(header)
if updateKeyframes {
inStart := writeMetaKeyframes(frReader, frWriter)
inF.Seek(inStart, os.SEEK_SET)
}
frW := make(map[flv.TagType]*flv.FlvWriter)
frW[flv.TAG_TYPE_VIDEO] = frWriter
frW[flv.TAG_TYPE_AUDIO] = frWriter
frW[flv.TAG_TYPE_META] = frWriter
writeFrames(frReader, frW, 0)
}
}
