playsound.c

winNT技术操作系统,国外开放的原代码和LIUX一样

    TRACE("SoundName='%s' !\n", debugstr_w(wps->pszSound));

    /* if resource, grab it */
    if ((wps->fdwSound & SND_RESOURCE) == SND_RESOURCE) {
        static const WCHAR wszWave[] = {'W','A','V','E',0};
        HRSRC	hRes;
        HGLOBAL	hGlob;

        if ((hRes = FindResourceW(wps->hMod, wps->pszSound, wszWave)) == 0 ||
            (hGlob = LoadResource(wps->hMod, hRes)) == 0)
            goto errCleanUp;
        if ((data = LockResource(hGlob)) == NULL) {
            FreeResource(hGlob);
            goto errCleanUp;
        }
        FreeResource(hGlob);
    } else
        data = (void*)wps->pszSound;

    /* construct an MMIO stream (either in memory, or from a file */
    if (wps->fdwSound & SND_MEMORY)
    { /* NOTE: SND_RESOURCE has the SND_MEMORY bit set */
	MMIOINFO	mminfo;

	memset(&mminfo, 0, sizeof(mminfo));
	mminfo.fccIOProc = FOURCC_MEM;
	mminfo.pchBuffer = (LPSTR)data;
	mminfo.cchBuffer = -1; /* FIXME: when a resource, could grab real size */
	TRACE("Memory sound %p\n", data);
	hmmio = mmioOpenW(NULL, &mminfo, MMIO_READ);
    }
    else if (wps->fdwSound & SND_ALIAS)
    {
        hmmio = get_mmioFromProfile(wps->fdwSound, wps->pszSound);
    }
    else if (wps->fdwSound & SND_FILENAME)
    {
        hmmio = get_mmioFromFile(wps->pszSound);
    }
    else
    {
        if ((hmmio = get_mmioFromProfile(wps->fdwSound | SND_NODEFAULT, wps->pszSound)) == 0)
        {
            if ((hmmio = get_mmioFromFile(wps->pszSound)) == 0)
            {
                hmmio = get_mmioFromProfile(wps->fdwSound, wps->pszSound);
            }
        }
    }
    if (hmmio == 0) goto errCleanUp;

    if (mmioDescend(hmmio, &ckMainRIFF, NULL, 0))
	goto errCleanUp;

    TRACE("ParentChunk ckid=%.4s fccType=%.4s cksize=%08lX \n",
	  (LPSTR)&ckMainRIFF.ckid, (LPSTR)&ckMainRIFF.fccType, ckMainRIFF.cksize);

    if ((ckMainRIFF.ckid != FOURCC_RIFF) ||
	(ckMainRIFF.fccType != mmioFOURCC('W', 'A', 'V', 'E')))
	goto errCleanUp;

    mmckInfo.ckid = mmioFOURCC('f', 'm', 't', ' ');
    if (mmioDescend(hmmio, &mmckInfo, &ckMainRIFF, MMIO_FINDCHUNK))
	goto errCleanUp;

    TRACE("Chunk Found ckid=%.4s fccType=%.4s cksize=%08lX \n",
	  (LPSTR)&mmckInfo.ckid, (LPSTR)&mmckInfo.fccType, mmckInfo.cksize);

    lpWaveFormat = HeapAlloc(GetProcessHeap(), 0, mmckInfo.cksize);
    if (mmioRead(hmmio, (HPSTR)lpWaveFormat, mmckInfo.cksize) < sizeof(WAVEFORMAT))
	goto errCleanUp;

    TRACE("wFormatTag=%04X !\n", 	lpWaveFormat->wFormatTag);
    TRACE("nChannels=%d \n", 		lpWaveFormat->nChannels);
    TRACE("nSamplesPerSec=%ld\n", 	lpWaveFormat->nSamplesPerSec);
    TRACE("nAvgBytesPerSec=%ld\n", 	lpWaveFormat->nAvgBytesPerSec);
    TRACE("nBlockAlign=%d \n", 		lpWaveFormat->nBlockAlign);
    TRACE("wBitsPerSample=%u !\n", 	lpWaveFormat->wBitsPerSample);

    /* move to end of 'fmt ' chunk */
    mmioAscend(hmmio, &mmckInfo, 0);

    mmckInfo.ckid = mmioFOURCC('d', 'a', 't', 'a');
    if (mmioDescend(hmmio, &mmckInfo, &ckMainRIFF, MMIO_FINDCHUNK))
	goto errCleanUp;

    TRACE("Chunk Found ckid=%.4s fccType=%.4s cksize=%08lX\n",
	  (LPSTR)&mmckInfo.ckid, (LPSTR)&mmckInfo.fccType, mmckInfo.cksize);

    s.hEvent = CreateEventW(NULL, FALSE, FALSE, NULL);

    if (waveOutOpen(&hWave, WAVE_MAPPER, lpWaveFormat, (DWORD)PlaySound_Callback,
		    (DWORD)&s, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
	goto errCleanUp;

    /* make it so that 3 buffers per second are needed */
    bufsize = (((lpWaveFormat->nAvgBytesPerSec / 3) - 1) / lpWaveFormat->nBlockAlign + 1) *
	lpWaveFormat->nBlockAlign;
    waveHdr = HeapAlloc(GetProcessHeap(), 0, 2 * sizeof(WAVEHDR) + 2 * bufsize);
    waveHdr[0].lpData = (char*)waveHdr + 2 * sizeof(WAVEHDR);
    waveHdr[1].lpData = (char*)waveHdr + 2 * sizeof(WAVEHDR) + bufsize;
    waveHdr[0].dwUser = waveHdr[1].dwUser = 0L;
    waveHdr[0].dwLoops = waveHdr[1].dwLoops = 0L;
    waveHdr[0].dwFlags = waveHdr[1].dwFlags = 0L;
    waveHdr[0].dwBufferLength = waveHdr[1].dwBufferLength = bufsize;
    if (waveOutPrepareHeader(hWave, &waveHdr[0], sizeof(WAVEHDR)) ||
	waveOutPrepareHeader(hWave, &waveHdr[1], sizeof(WAVEHDR))) {
	goto errCleanUp;
    }

    s.dwEventCount = 1L; /* for first buffer */
    index = 0;

    do {
	left = mmckInfo.cksize;

	mmioSeek(hmmio, mmckInfo.dwDataOffset, SEEK_SET);
	while (left)
        {
	    if (WaitForSingleObject(WINMM_IData.psStopEvent, 0) == WAIT_OBJECT_0)
            {
		wps->bLoop = FALSE;
		break;
	    }
	    count = mmioRead(hmmio, waveHdr[index].lpData, min(bufsize, left));
	    if (count < 1) break;
	    left -= count;
	    waveHdr[index].dwBufferLength = count;
	    waveHdr[index].dwFlags &= ~WHDR_DONE;
	    if (waveOutWrite(hWave, &waveHdr[index], sizeof(WAVEHDR)) == MMSYSERR_NOERROR) {
                index ^= 1;
                PlaySound_WaitDone(&s);
            }
            else FIXME("Couldn't play header\n");
	}
	bRet = TRUE;
    } while (wps->bLoop);

    PlaySound_WaitDone(&s); /* for last buffer */
    waveOutReset(hWave);

    waveOutUnprepareHeader(hWave, &waveHdr[0], sizeof(WAVEHDR));
    waveOutUnprepareHeader(hWave, &waveHdr[1], sizeof(WAVEHDR));

errCleanUp:
    TRACE("Done playing='%s' => %s!\n", debugstr_w(wps->pszSound), bRet ? "ok" : "ko");
    CloseHandle(s.hEvent);
    HeapFree(GetProcessHeap(), 0, waveHdr);
    HeapFree(GetProcessHeap(), 0, lpWaveFormat);
    if (hWave)		while (waveOutClose(hWave) == WAVERR_STILLPLAYING) Sleep(100);
    if (hmmio) 		mmioClose(hmmio, 0);

    PlaySound_Free(wps);

    return bRet;
}

static BOOL MULTIMEDIA_PlaySound(const void* pszSound, HMODULE hmod, DWORD fdwSound, BOOL bUnicode)
{
    WINE_PLAYSOUND*     wps = NULL;

    TRACE("pszSound='%p' hmod=%p fdwSound=%08lX\n",
	  pszSound, hmod, fdwSound);

    /* FIXME? I see no difference between SND_NOWAIT and SND_NOSTOP !
     * there could be one if several sounds can be played at once...
     */
    if ((fdwSound & (SND_NOWAIT | SND_NOSTOP)) && WINMM_IData.lpPlaySound != NULL)
	return FALSE;

    /* alloc internal structure, if we need to play something */
    if (pszSound && !(fdwSound & SND_PURGE))
    {
        if (!(wps = PlaySound_Alloc(pszSound, hmod, fdwSound, bUnicode)))
            return FALSE;
    }

    EnterCriticalSection(&WINMM_IData.cs);
    /* since several threads can enter PlaySound in parallel, we're not
     * sure, at this point, that another thread didn't start a new playsound
     */
    while (WINMM_IData.lpPlaySound != NULL)
    {
        ResetEvent(WINMM_IData.psLastEvent);
        /* FIXME: doc says we have to stop all instances of pszSound if it's non
         * NULL... as of today, we stop all playing instances */
        SetEvent(WINMM_IData.psStopEvent);

        LeaveCriticalSection(&WINMM_IData.cs);
        WaitForSingleObject(WINMM_IData.psLastEvent, INFINITE);
        EnterCriticalSection(&WINMM_IData.cs);

        ResetEvent(WINMM_IData.psStopEvent);
    }

    if (wps) wps->lpNext = WINMM_IData.lpPlaySound;
    WINMM_IData.lpPlaySound = wps;
    LeaveCriticalSection(&WINMM_IData.cs);

    if (!pszSound || (fdwSound & SND_PURGE)) return TRUE;

    if (fdwSound & SND_ASYNC)
    {
        DWORD       id;
        HANDLE      handle;
        wps->bLoop = (fdwSound & SND_LOOP) ? TRUE : FALSE;
        if ((handle = CreateThread(NULL, 0, proc_PlaySound, wps, 0, &id)) != 0) {
            wps->hThread = handle;
            SetThreadPriority(handle, THREAD_PRIORITY_TIME_CRITICAL);
            return TRUE;
        }
    }
    else return proc_PlaySound(wps);

    /* error cases */
    PlaySound_Free(wps);
    return FALSE;
}

/**************************************************************************
 * 				PlaySoundA		[WINMM.@]
 */
BOOL WINAPI PlaySoundA(LPCSTR pszSoundA, HMODULE hmod, DWORD fdwSound)
{
    return MULTIMEDIA_PlaySound(pszSoundA, hmod, fdwSound, FALSE);
}

/**************************************************************************
 * 				PlaySoundW		[WINMM.@]
 */
BOOL WINAPI PlaySoundW(LPCWSTR pszSoundW, HMODULE hmod, DWORD fdwSound)
{
    return MULTIMEDIA_PlaySound(pszSoundW, hmod, fdwSound, TRUE);
}

/**************************************************************************
 * 				sndPlaySoundA		[WINMM.@]
 */
BOOL WINAPI sndPlaySoundA(LPCSTR pszSoundA, UINT uFlags)
{
    uFlags &= SND_ASYNC|SND_LOOP|SND_MEMORY|SND_NODEFAULT|SND_NOSTOP|SND_SYNC;
    return MULTIMEDIA_PlaySound(pszSoundA, 0, uFlags, FALSE);
}

/**************************************************************************
 * 				sndPlaySoundW		[WINMM.@]
 */
BOOL WINAPI sndPlaySoundW(LPCWSTR pszSound, UINT uFlags)
{
    uFlags &= SND_ASYNC|SND_LOOP|SND_MEMORY|SND_NODEFAULT|SND_NOSTOP|SND_SYNC;
    return MULTIMEDIA_PlaySound(pszSound, 0, uFlags, TRUE);
}

/**************************************************************************
 * 				mmsystemGetVersion	[WINMM.@]
 */
UINT WINAPI mmsystemGetVersion(void)
{
    TRACE("3.10 (Win95?)\n");
    return 0x030a;
}