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mts/mpegts.go: FindPMT now also returns index

This commit is contained in:
saxon 2019-01-22 11:21:12 +10:30
parent 1ec23badcc
commit ba209a1d7c
1 changed files with 4 additions and 4 deletions
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8
stream/mts/mpegts.go
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@ -129,18 +129,18 @@ type Packet struct {
// FindPMT will take a clip of mpegts and try to find a PMT table - if one
// is found, then it is returned, otherwise nil and an error is returned.
func FindPMT(d []byte) (p []byte, err error) {
func FindPMT(d []byte) (p []byte, i int, err error) {
if len(d) < PacketSize {
return nil, errors.New("Mmpegts data not of valid length")
return nil, -1, errors.New("Mmpegts data not of valid length")
}
for i := 0; i < len(d); i += PacketSize {
for i = 0; i < len(d); i += PacketSize {
pid := (uint16(d[i+1]&0x1f) << 8) | uint16(d[i+2])
if pid == pmtPid {
p = d[i+4 : i+PacketSize]
return
}
}
return nil, errors.New("Could not find pmt table in mpegts data")
return nil, -1, errors.New("Could not find pmt table in mpegts data")
}
// FillPayload takes a channel and fills the packets Payload field until the