func (dpx *Demultiplexer) Start() {
for true {
dpx.Packet = new(C.AVPacket)
C.av_init_packet(dpx.Packet)
if C.av_read_frame(dpx.Ds.Ctx, dpx.Packet) >= 0 {
C.av_dup_packet(dpx.Packet)
} else {
println("end of file reached, closing channels")
for i := 0; i < len(*dpx.tracks); i++ {
print("closing channel ")
println(i)
close((*dpx.tracks)[i].stream)
}
break
}
var re Packet
re.Pts = int64(dpx.Packet.pts)
re.Dts = int64(dpx.Packet.dts)
re.Size = int(dpx.Packet.size)
re.Data = make([]byte, re.Size)
data := (*(*[1 << 30]byte)(unsafe.Pointer(dpx.Packet.data)))[0:dpx.Packet.size]
for i := 0; i < re.Size; i++ {
re.Data[i] = data[i]
}
re.Stream = int(dpx.Packet.stream_index)
re.Flags = int(dpx.Packet.flags)
re.Duration = int(dpx.Packet.duration)
re.Pos = int64(dpx.Packet.pos)
C.av_free_packet(dpx.Packet)
(*dpx.tracks)[re.Stream].stream <- re
}
//re * Packet
}
func (dpx *Demultiplexer) ReadPacket(re *Packet) bool {
dpx.Packet = new(C.AVPacket)
C.av_init_packet(dpx.Packet)
defer C.av_free_packet(dpx.Packet)
if C.av_read_frame(dpx.Ds.Ctx, dpx.Packet) >= 0 {
C.av_dup_packet(dpx.Packet)
} else {
return false
}
re.Pts = int64(dpx.Packet.pts)
re.Dts = int64(dpx.Packet.dts)
re.Size = int(dpx.Packet.size)
re.Data = make([]byte, re.Size)
data := (*(*[1 << 30]byte)(unsafe.Pointer(dpx.Packet.data)))[0:dpx.Packet.size]
for i := 0; i < re.Size; i++ {
re.Data[i] = data[i]
}
re.Stream = int(dpx.Packet.stream_index)
re.Flags = int(dpx.Packet.flags)
re.Duration = int(dpx.Packet.duration)
re.Pos = int64(dpx.Packet.pos)
return true
}
func av_dup_packet(packet *avPacket) {
C.av_dup_packet((*C.AVPacket)(unsafe.Pointer(packet)))
}
func (p *Packet) AvDupPacket() int {
return int(C.av_dup_packet((*C.struct_AVPacket)(p)))
}
//int av_dup_packet (AVPacket *pkt)
func Av_dup_packet(p *AVPacket) int {
return int(C.av_dup_packet((*C.struct_AVPacket)(p)))
}