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rtmp: afmDecodeInt24 generated port from c2go

This commit is contained in:
Jake Lane 2018-07-19 14:47:03 +09:30
parent e51ec5b929
commit b327c5772b
1 changed files with 8 additions and 5 deletions
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13
rtmp/rtmp.go
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@ -341,9 +341,9 @@ func rtmpWrite(r *C.RTMP, data []byte) int {
pkt.m_packetType = C.uint8_t(*indxBytePtr(buf, 0)) pkt.m_packetType = C.uint8_t(*indxBytePtr(buf, 0))
buf = incBytePtr(buf, 1) buf = incBytePtr(buf, 1)
pkt.m_nBodySize = C.uint32_t(C.AMF_DecodeInt24((*C.char)(buf))) pkt.m_nBodySize = C.uint32_t(afmDecodeInt24((*byte)(buf)))
buf = incBytePtr(buf, 3) buf = incBytePtr(buf, 3)
pkt.m_nTimeStamp = C.uint32_t(C.AMF_DecodeInt24((*C.char)(buf))) pkt.m_nTimeStamp = C.uint32_t(afmDecodeInt24((*byte)(buf)))
buf = incBytePtr(buf, 3) buf = incBytePtr(buf, 3)
pkt.m_nTimeStamp |= C.uint32_t(*indxBytePtr(buf, 0)) << 24 pkt.m_nTimeStamp |= C.uint32_t(*indxBytePtr(buf, 0)) << 24
buf = incBytePtr(buf, 4) buf = incBytePtr(buf, 4)
@ -410,9 +410,12 @@ func rtmpWrite(r *C.RTMP, data []byte) int {
// afmDecodeInt24 decodes data into an unsigned int // afmDecodeInt24 decodes data into an unsigned int
func afmDecodeInt24(data *byte) uint32 { func afmDecodeInt24(data *byte) uint32 {
dataPtr := unsafe.Pointer(data) // TODO Understand logic and simplify
c := (*uint8)(unsafe.Pointer(data))
return (uint32)(*data)<<16 | *(*uint32)(incBytePtr(dataPtr, 1))<<8 | *(*uint32)(incBytePtr(dataPtr, 2)) dst := uint32(int32(*c) << 16)
dst |= uint32(int32(*((*uint8)(unsafe.Pointer(uintptr(unsafe.Pointer(c)) + (uintptr)(int32(1))*unsafe.Sizeof(*c))))) << 8)
dst |= uint32(int32(*((*uint8)(unsafe.Pointer(uintptr(unsafe.Pointer(c)) + (uintptr)(int32(2))*unsafe.Sizeof(*c))))))
return dst
} }
func afmEncodeString(output *byte, outend *byte, bv *C.AVal) *byte { func afmEncodeString(output *byte, outend *byte, bv *C.AVal) *byte {