static DWORD CALLBACK MCICDA_playLoop ( void * ptr ) [static]
Definition at line 82 of file mcicda.c.
{
    WINE_MCICDAUDIO *wmcda = (WINE_MCICDAUDIO*)ptr;
    DWORD lastPos, curPos, endPos, br;
    void *cdData;
    DWORD lockLen, fragLen;
    DSBCAPS caps;
    RAW_READ_INFO rdInfo;
    HRESULT hr = DS_OK;

    memset(&caps, 0, sizeof(caps));
    caps.dwSize = sizeof(caps);
    hr = IDirectSoundBuffer_GetCaps(wmcda->dsBuf, &caps);

    fragLen = caps.dwBufferBytes/CDDA_FRAG_COUNT;
    curPos = lastPos = 0;
    endPos = ~0u;
    while (SUCCEEDED(hr) && endPos != lastPos &&
           WaitForSingleObject(wmcda->stopEvent, 0) != WAIT_OBJECT_0) {
        hr = IDirectSoundBuffer_GetCurrentPosition(wmcda->dsBuf, &curPos, NULL);
        if ((curPos-lastPos+caps.dwBufferBytes)%caps.dwBufferBytes < fragLen) {
            Sleep(1);
            continue;
        }

        EnterCriticalSection(&wmcda->cs);
        rdInfo.DiskOffset.QuadPart = wmcda->start<<11;
        rdInfo.SectorCount = min(fragLen/RAW_SECTOR_SIZE, wmcda->end-wmcda->start);
        rdInfo.TrackMode = CDDA;

        hr = IDirectSoundBuffer_Lock(wmcda->dsBuf, lastPos, fragLen, &cdData, &lockLen, NULL, NULL, 0);
        if (hr == DSERR_BUFFERLOST) {
            if(FAILED(IDirectSoundBuffer_Restore(wmcda->dsBuf)) ||
               FAILED(IDirectSoundBuffer_Play(wmcda->dsBuf, 0, 0, DSBPLAY_LOOPING))) {
                LeaveCriticalSection(&wmcda->cs);
                break;
            }
            hr = IDirectSoundBuffer_Lock(wmcda->dsBuf, lastPos, fragLen, &cdData, &lockLen, NULL, NULL, 0);
        }

        if (SUCCEEDED(hr)) {
            if (rdInfo.SectorCount > 0) {
                if (!DeviceIoControl(wmcda->handle, IOCTL_CDROM_RAW_READ, &rdInfo, sizeof(rdInfo), cdData, lockLen, &br, NULL))
                    WARN("CD read failed at sector %d: 0x%x\n", wmcda->start, GetLastError());
            }
            if (rdInfo.SectorCount*RAW_SECTOR_SIZE < lockLen) {
                if(endPos == ~0u) endPos = lastPos;
                memset((BYTE*)cdData + rdInfo.SectorCount*RAW_SECTOR_SIZE, 0,
                       lockLen - rdInfo.SectorCount*RAW_SECTOR_SIZE);
            }
            hr = IDirectSoundBuffer_Unlock(wmcda->dsBuf, cdData, lockLen, NULL, 0);
        }

        lastPos += fragLen;
        lastPos %= caps.dwBufferBytes;
        wmcda->start += rdInfo.SectorCount;

        LeaveCriticalSection(&wmcda->cs);
    }
    IDirectSoundBuffer_Stop(wmcda->dsBuf);
    SetEvent(wmcda->stopEvent);

    /* A design bug in native: the independent CD player called by the
     * MCI has no means to signal end of playing, therefore the MCI
     * notification is left hanging.  MCI_NOTIFY_SUPERSEDED will be
     * signaled by the next command that has MCI_NOTIFY set (or
     * MCI_NOTIFY_ABORTED for MCI_PLAY). */

    return 0;
}
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