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avutil: seek after probe

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This commit is contained in:
nareix 2016-07-29 07:50:33 +08:00
parent d5c3f87b5c
commit c4855b68ed
1 changed files with 10 additions and 1 deletions
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11
av/avutil/avutil.go
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@ -184,8 +184,17 @@ func (self *Handlers) Open(uri string) (demuxer av.DemuxCloser, err error) {
for _, handler := range self.handlers { for _, handler := range self.handlers {
if handler.Probe != nil && handler.Probe(probebuf[:]) && handler.ReaderDemuxer != nil { if handler.Probe != nil && handler.Probe(probebuf[:]) && handler.ReaderDemuxer != nil {
var _r io.Reader
if rs, ok := r.(io.ReadSeeker); ok {
if _, err = rs.Seek(0, 0); err != nil {
return
}
_r = rs
} else {
_r = io.MultiReader(bytes.NewReader(probebuf[:]), r)
}
demuxer = &HandlerDemuxer{ demuxer = &HandlerDemuxer{
Demuxer: handler.ReaderDemuxer(io.MultiReader(bytes.NewReader(probebuf[:]), r)), Demuxer: handler.ReaderDemuxer(_r),
r: r, r: r,
} }
return return