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fix(h265parser): AVCDecoderConfRecord Unmarshal read order should same as Marshal #68

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fix(h265parser): AVCDecoderConfRecord Unmarshal read order should same as Marshal #68

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51 changes: 27 additions & 24 deletions codec/h265parser/parser.go
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Original file line number Diff line number Diff line change
Expand Up @@ -537,8 +537,31 @@ func (self *AVCDecoderConfRecord) Unmarshal(b []byte) (n int, err error) {
self.ProfileCompatibility = b[2]
self.AVCLevelIndication = b[3]
self.LengthSizeMinusOne = b[4] & 0x03
spscount := int(b[5] & 0x1f)
n += 6

n = 23

n += 2
vpscount := int(b[n] & 0x1f)
n++
for i := 0; i < vpscount; i++ {
if len(b) < n+2 {
err = ErrDecconfInvalid
return
}
vpslen := int(pio.U16BE(b[n:]))
n += 2

if len(b) < n+vpslen {
err = ErrDecconfInvalid
return
}
self.VPS = append(self.VPS, b[n:n+vpslen])
n += vpslen
}

n += 2
spscount := int(b[n] & 0x1f)
n++
for i := 0; i < spscount; i++ {
if len(b) < n+2 {
err = ErrDecconfInvalid
Expand All @@ -554,23 +577,21 @@ func (self *AVCDecoderConfRecord) Unmarshal(b []byte) (n int, err error) {
self.SPS = append(self.SPS, b[n:n+spslen])
n += spslen
}

if len(b) < n+1 {
err = ErrDecconfInvalid
return
}

ppscount := int(b[n])
n += 2
ppscount := int(b[n] & 0x1f)
n++

for i := 0; i < ppscount; i++ {
if len(b) < n+2 {
err = ErrDecconfInvalid
return
}
ppslen := int(pio.U16BE(b[n:]))
n += 2

if len(b) < n+ppslen {
err = ErrDecconfInvalid
return
Expand All @@ -579,24 +600,6 @@ func (self *AVCDecoderConfRecord) Unmarshal(b []byte) (n int, err error) {
n += ppslen
}

vpscount := int(b[n])
n++

for i := 0; i < vpscount; i++ {
if len(b) < n+2 {
err = ErrDecconfInvalid
return
}
vpslen := int(pio.U16BE(b[n:]))
n += 2

if len(b) < n+vpslen {
err = ErrDecconfInvalid
return
}
self.VPS = append(self.VPS, b[n:n+vpslen])
n += vpslen
}
return
}

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