mpegl3.c

Wine-20031016

	break;
    default:
	WARN("Unsupported query %08lx\n", dwQuery);
	return MMSYSERR_NOTSUPPORTED;
    }
    afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
    afd->szFormat[0] = 0; /* let MSACM format this for us... */

    return MMSYSERR_NOERROR;
}

/***********************************************************************
 *           MPEG3_FormatSuggest
 *
 */
static	LRESULT	MPEG3_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
{
    /* some tests ... */
    if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
	adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
	MPEG3_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
    /* FIXME: should do those tests against the real size (according to format tag */

    /* If no suggestion for destination, then copy source value */
    if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS))
	adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
    if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC))
        adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;

    if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE))
    {
	if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
            adfs->pwfxDst->wBitsPerSample = 4;
        else
            adfs->pwfxDst->wBitsPerSample = 16;
    }
    if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
    {
	if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
            adfs->pwfxDst->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
        else
            adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM;
    }

    /* check if result is ok */
    if (MPEG3_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;

    /* recompute other values */
    switch (adfs->pwfxDst->wFormatTag)
    {
    case WAVE_FORMAT_PCM:
        adfs->pwfxDst->nBlockAlign = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
        adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
        break;
    case WAVE_FORMAT_MPEGLAYER3:
        adfs->pwfxDst->nBlockAlign = 1;
        fill_in_wfx(adfs->cbwfxDst, adfs->pwfxDst, 192000);
        break;
    default:
        FIXME("\n");
        break;
    }

    return MMSYSERR_NOERROR;
}

/***********************************************************************
 *           MPEG3_Reset
 *
 */
static	void	MPEG3_Reset(PACMDRVSTREAMINSTANCE adsi, AcmMpeg3Data* aad)
{
}

/***********************************************************************
 *           MPEG3_StreamOpen
 *
 */
static	LRESULT	MPEG3_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
{
    AcmMpeg3Data*	aad;

    assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC));

    if (MPEG3_GetFormatIndex(adsi->pwfxSrc) == 0xFFFFFFFF ||
	MPEG3_GetFormatIndex(adsi->pwfxDst) == 0xFFFFFFFF)
	return ACMERR_NOTPOSSIBLE;

    aad = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmMpeg3Data));
    if (aad == 0) return MMSYSERR_NOMEM;

    adsi->dwDriver = (DWORD)aad;

    if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
	adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
    {
	goto theEnd;
    }
    else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
             adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
    {
	/* resampling or mono <=> stereo not available
         * MPEG3 algo only define 16 bit per sample output
         */
	if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
	    adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
            adsi->pwfxDst->wBitsPerSample != 16)
	    goto theEnd;
        aad->convert = mp3_horse;
        InitMP3(&aad->mp);
    }
    /* no encoding yet
    else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
             adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
    */
    else goto theEnd;
    MPEG3_Reset(adsi, aad);

    return MMSYSERR_NOERROR;

 theEnd:
    HeapFree(GetProcessHeap(), 0, aad);
    adsi->dwDriver = 0L;
    return MMSYSERR_NOTSUPPORTED;
}

/***********************************************************************
 *           MPEG3_StreamClose
 *
 */
static	LRESULT	MPEG3_StreamClose(PACMDRVSTREAMINSTANCE adsi)
{
    ExitMP3(&((AcmMpeg3Data*)adsi->dwDriver)->mp);
    HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
    return MMSYSERR_NOERROR;
}

/***********************************************************************
 *           MPEG3_round
 *
 */
static	inline DWORD	MPEG3_round(DWORD a, DWORD b, DWORD c)
{
    assert(a && b && c);
    /* to be sure, always return an entire number of c... */
    return ((double)a * (double)b + (double)c - 1) / (double)c;
}

/***********************************************************************
 *           MPEG3_StreamSize
 *
 */
static	LRESULT MPEG3_StreamSize(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMSIZE adss)
{
    switch (adss->fdwSize)
    {
    case ACM_STREAMSIZEF_DESTINATION:
	/* cbDstLength => cbSrcLength */
	if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
	    adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
        {
	    /* don't take block overhead into account, doesn't matter too much */
	    adss->cbSrcLength = adss->cbDstLength * 4;
	}
        else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
                 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
        {
	    FIXME("misses the block header overhead\n");
	    adss->cbSrcLength = 256 + adss->cbDstLength / 4;
	}
        else
        {
	    return MMSYSERR_NOTSUPPORTED;
	}
	break;
    case ACM_STREAMSIZEF_SOURCE:
	/* cbSrcLength => cbDstLength */
	if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
	    adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
        {
	    FIXME("misses the block header overhead\n");
	    adss->cbDstLength = 256 + adss->cbSrcLength / 4;
	}
        else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
                 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
        {
	    /* don't take block overhead into account, doesn't matter too much */
	    adss->cbDstLength = adss->cbSrcLength * 4;
	}
        else
        {
	    return MMSYSERR_NOTSUPPORTED;
	}
	break;
    default:
	WARN("Unsupported query %08lx\n", adss->fdwSize);
	return MMSYSERR_NOTSUPPORTED;
    }
    return MMSYSERR_NOERROR;
}

/***********************************************************************
 *           MPEG3_StreamConvert
 *
 */
static LRESULT MPEG3_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
{
    AcmMpeg3Data*	aad = (AcmMpeg3Data*)adsi->dwDriver;
    DWORD		nsrc = adsh->cbSrcLength;
    DWORD		ndst = adsh->cbDstLength;

    if (adsh->fdwConvert &
	~(ACM_STREAMCONVERTF_BLOCKALIGN|
	  ACM_STREAMCONVERTF_END|
	  ACM_STREAMCONVERTF_START))
    {
	FIXME("Unsupported fdwConvert (%08lx), ignoring it\n", adsh->fdwConvert);
    }
    /* ACM_STREAMCONVERTF_BLOCKALIGN
     *	currently all conversions are block aligned, so do nothing for this flag
     * ACM_STREAMCONVERTF_END
     *	no pending data, so do nothing for this flag
     */
    if ((adsh->fdwConvert & ACM_STREAMCONVERTF_START))
    {
	MPEG3_Reset(adsi, aad);
    }

    aad->convert(adsi, adsh->pbSrc, &nsrc, adsh->pbDst, &ndst);
    adsh->cbSrcLengthUsed = nsrc;
    adsh->cbDstLengthUsed = ndst;

    return MMSYSERR_NOERROR;
}

/**************************************************************************
 * 			MPEG3_DriverProc			[exported]
 */
LRESULT CALLBACK	MPEG3_DriverProc(DWORD dwDevID, HDRVR hDriv, UINT wMsg,
					 LPARAM dwParam1, LPARAM dwParam2)
{
    TRACE("(%08lx %08lx %04x %08lx %08lx);\n",
	  dwDevID, (DWORD)hDriv, wMsg, dwParam1, dwParam2);

    switch (wMsg)
    {
    case DRV_LOAD:		return 1;
    case DRV_FREE:		return 1;
    case DRV_OPEN:		return MPEG3_drvOpen((LPSTR)dwParam1);
    case DRV_CLOSE:		return MPEG3_drvClose(dwDevID);
    case DRV_ENABLE:		return 1;
    case DRV_DISABLE:		return 1;
    case DRV_QUERYCONFIGURE:	return 1;
    case DRV_CONFIGURE:		MessageBoxA(0, "MPEG3 filter !", "Wine Driver", MB_OK); return 1;
    case DRV_INSTALL:		return DRVCNF_RESTART;
    case DRV_REMOVE:		return DRVCNF_RESTART;

    case ACMDM_DRIVER_NOTIFY:
	/* no caching from other ACM drivers is done so far */
	return MMSYSERR_NOERROR;

    case ACMDM_DRIVER_DETAILS:
	return MPEG3_DriverDetails((PACMDRIVERDETAILSW)dwParam1);

    case ACMDM_FORMATTAG_DETAILS:
	return MPEG3_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);

    case ACMDM_FORMAT_DETAILS:
	return MPEG3_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);

    case ACMDM_FORMAT_SUGGEST:
	return MPEG3_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);

    case ACMDM_STREAM_OPEN:
	return MPEG3_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);

    case ACMDM_STREAM_CLOSE:
	return MPEG3_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);

    case ACMDM_STREAM_SIZE:
	return MPEG3_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);

    case ACMDM_STREAM_CONVERT:
	return MPEG3_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);

    case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
    case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
	/* this converter is not a hardware driver */
    case ACMDM_FILTERTAG_DETAILS:
    case ACMDM_FILTER_DETAILS:
	/* this converter is not a filter */
    case ACMDM_STREAM_RESET:
	/* only needed for asynchronous driver... we aren't, so just say it */
	return MMSYSERR_NOTSUPPORTED;
    case ACMDM_STREAM_PREPARE:
    case ACMDM_STREAM_UNPREPARE:
	/* nothing special to do here... so don't do anything */
	return MMSYSERR_NOERROR;

    default:
	return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
    }
    return 0;
}