func fromPacket(op *ogg.Packet) *C.ogg_packet {
if op == nil {
return nil
}
cp := C.ogg_packet{}
if op.Packet != nil {
cp.packet = (*C.uchar)(unsafe.Pointer(&op.Packet[0]))
cp.bytes = C.long(len(op.Packet))
}
if op.BOS {
cp.b_o_s = 1
}
if op.EOS {
cp.e_o_s = 1
}
cp.granulepos = C.ogg_int64_t(op.GranulePos)
cp.packetno = C.ogg_int64_t(op.PacketNo)
return &cp
}
func GranuleTime(v *DspState, granulepos int64) float64 {
return float64(C.vorbis_granule_time((*C.vorbis_dsp_state)(v), C.ogg_int64_t(granulepos)))
}