Function fcb

src/SB/Core/gc/iSnd.cpp:277–515

static void iSndMyAXFree(AXVPB**);

static void fcb()
{
    if (!soundInited && iTRCDisk::IsDiskIDed())
    {
        return;
    }

    fc++;
    S32 i;
    S32 need_update = TRUE;
    for (i = 0; i < 6; i++)
    {
        xSndVoiceInfo* gsnd_voice = &gSnd.voice[i];
        U32 orig_flags = streams[i].vinf.flags;
        if (streams[i].vinf.voice == NULL)
        {
            continue;
        }

        u16 addrHi = streams[i].vinf.voice->pb.addr.currentAddressHi;
        if (orig_flags & 0xe0006)
        {
            continue;
        }
        u32 addr = addrHi << 16;
        addr += streams[i].vinf.voice->pb.addr.currentAddressLo;
        U32 dest = streams[i].dest_b;
        dump_flags(orig_flags);

        if (dest * 2 < addr && (orig_flags & 0x4000) == 0 && (orig_flags & 0x8) == 0)
        {
            streams[i].vinf.flags |= 0x4000;
            streams[i].vinf.flags &= ~0x8000;
            streams[i].vinf.flags &= ~0x2000;
            if ((orig_flags & 0x1000000) && streams[i].source_b == 0)
            {
                streams[i].vinf.flags |= 0x2000000;
            }
            streams[i].x94 = streams[i].x90;
            orig_flags = streams[i].vinf.flags;
        }
        else if (dest * 2 >= addr && (orig_flags & 0x8000) == 0)
        {
            streams[i].vinf.flags |= 0x8000;
            streams[i].vinf.flags &= ~0x4000;
            streams[i].vinf.flags &= ~0x1000;
            if ((orig_flags & 0x1000000))
            {
                streams[i].vinf.flags |= 0x2000000;
            }
            orig_flags = streams[i].vinf.flags;
        }

        if ((orig_flags & 0x20) && (orig_flags & 0x4000))
        {
            streams[i].vinf.flags &= ~0x20;
            dest = streams[i].dest_a * 2;
            dest += streams[i].x24 & 0xFFFF;