func avcodec_decode_audio(ctx *_CodecContext, buffer []byte, size *int, packet *avPacket) int {
return int(C.avcodec_decode_audio3(
ctx.ctx,
(*C.int16_t)(unsafe.Pointer(&buffer[0])),
(*C.int)(unsafe.Pointer(size)),
(*C.AVPacket)(unsafe.Pointer(packet))))
}
func (c *Decoder) decodeAudio(p Packet) *Frame {
packet := new(C.AVPacket)
C.av_init_packet(packet)
defer C.av_free_packet(packet)
packet.pts = C.int64_t(p.Pts)
packet.dts = C.int64_t(p.Dts)
packet.size = C.int(p.Size)
packet.data = (*C.uint8_t)(unsafe.Pointer(&p.Data[0]))
packet.stream_index = C.int(p.Stream)
packet.flags = C.int(p.Flags)
packet.duration = C.int(p.Duration)
packet.pos = C.int64_t(p.Pos)
//size:=packet.size;
samples_size := C.int(C.AVCODEC_MAX_AUDIO_FRAME_SIZE)
//bps := C.av_get_bits_per_sample_fmt(c.Ctx.sample_fmt) >> 3;
outbuf := (*C.uint8_t)(C.av_malloc(C.uint(samples_size)))
defer C.av_free(unsafe.Pointer(outbuf))
C.avcodec_decode_audio3(c.Ctx, (*C.int16_t)(unsafe.Pointer(outbuf)), &samples_size, packet)
//println(data_len)
return nil
}