예제 #1
0
파일: msadp32.c 프로젝트: RareHare/reactos
/***********************************************************************
 *           ADPCM_FormatSuggest
 *
 */
static	LRESULT	ADPCM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
{
    /* some tests ... */
    if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
	adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
	adfs->pwfxSrc->wFormatTag == adfs->pwfxDst->wFormatTag ||
	ADPCM_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_ADPCM;
        else
            adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM;
    }

    /* 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;
        /* check if result is ok */
        if (ADPCM_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
        break;
    case WAVE_FORMAT_ADPCM:
        init_wfx_adpcm((ADPCMWAVEFORMAT*)adfs->pwfxDst);
        /* check if result is ok */
        if (ADPCM_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
        break;
    default:
        return ACMERR_NOTPOSSIBLE;
    }

    return MMSYSERR_NOERROR;
}
예제 #2
0
파일: msadp32.c 프로젝트: RareHare/reactos
static void     init_wfx_adpcm(ADPCMWAVEFORMAT* awfx)
{
    register WAVEFORMATEX*      pwfx = &awfx->wfx;

    /* we assume wFormatTag, nChannels, nSamplesPerSec and wBitsPerSample
     * have been initialized... */

    if (pwfx->wFormatTag != WAVE_FORMAT_ADPCM) {FIXME("wrong FT\n"); return;}
    if (ADPCM_GetFormatIndex(pwfx) == 0xFFFFFFFF) {FIXME("wrong fmt\n"); return;}

    switch (pwfx->nSamplesPerSec)
    {
    case  8000: pwfx->nBlockAlign = 256 * pwfx->nChannels;   break;
    case 11025: pwfx->nBlockAlign = 256 * pwfx->nChannels;   break;
    case 22050: pwfx->nBlockAlign = 512 * pwfx->nChannels;   break;
    case 44100: pwfx->nBlockAlign = 1024 * pwfx->nChannels;  break;
    default:                               break;
    }
    pwfx->cbSize = 2 * sizeof(WORD) + 7 * sizeof(ADPCMCOEFSET);
    /* 7 is the size of the block head (which contains two samples) */

    awfx->wSamplesPerBlock = pwfx->nBlockAlign * 2 / pwfx->nChannels - 12;
    pwfx->nAvgBytesPerSec = (pwfx->nSamplesPerSec * pwfx->nBlockAlign) / awfx->wSamplesPerBlock;
    awfx->wNumCoef = 7;
    memcpy(awfx->aCoef, MSADPCM_CoeffSet, 7 * sizeof(ADPCMCOEFSET));
}
예제 #3
0
파일: msadp32.c 프로젝트: RareHare/reactos
/***********************************************************************
 *           ADPCM_FormatDetails
 *
 */
static	LRESULT	ADPCM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
{
    switch (dwQuery)
    {
    case ACM_FORMATDETAILSF_FORMAT:
	if (ADPCM_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
	break;
    case ACM_FORMATDETAILSF_INDEX:
	afd->pwfx->wFormatTag = afd->dwFormatTag;
	switch (afd->dwFormatTag)
        {
	case WAVE_FORMAT_PCM:
	    if (afd->dwFormatIndex >= NUM_PCM_FORMATS) return ACMERR_NOTPOSSIBLE;
	    afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
	    afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
	    afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
	    /* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not accessible
	     * afd->pwfx->cbSize = 0;
	     */
	    afd->pwfx->nBlockAlign =
		(afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
	    afd->pwfx->nAvgBytesPerSec =
		afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
	    break;
	case WAVE_FORMAT_ADPCM:
	    if (afd->dwFormatIndex >= NUM_ADPCM_FORMATS) return ACMERR_NOTPOSSIBLE;
            if (afd->cbwfx < sizeof(ADPCMWAVEFORMAT) + (7 - 1) * sizeof(ADPCMCOEFSET))
                return ACMERR_NOTPOSSIBLE;
	    afd->pwfx->nChannels = ADPCM_Formats[afd->dwFormatIndex].nChannels;
	    afd->pwfx->nSamplesPerSec = ADPCM_Formats[afd->dwFormatIndex].rate;
	    afd->pwfx->wBitsPerSample = ADPCM_Formats[afd->dwFormatIndex].nBits;
            init_wfx_adpcm((ADPCMWAVEFORMAT*)afd->pwfx);
	    break;
	default:
            WARN("Unsupported tag %08x\n", afd->dwFormatTag);
	    return MMSYSERR_INVALPARAM;
	}
	break;
    default:
	WARN("Unsupported query %08x\n", dwQuery);
	return MMSYSERR_NOTSUPPORTED;
    }
    afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
    afd->szFormat[0] = 0; /* let MSACM format this for us... */

    return MMSYSERR_NOERROR;
}
예제 #4
0
파일: imaadp32.c 프로젝트: reactos/reactos
static void     init_wfx_ima_adpcm(IMAADPCMWAVEFORMAT* awfx/*, DWORD nba*/)
{
    WAVEFORMATEX* pwfx = &awfx->wfx;

    /* we assume wFormatTag, nChannels, nSamplesPerSec and wBitsPerSample
     * have been initialized... */

    if (pwfx->wFormatTag != WAVE_FORMAT_IMA_ADPCM) {
        FIXME("wrong FT\n");
        return;
    }
    if (ADPCM_GetFormatIndex(pwfx) == 0xFFFFFFFF) {
        FIXME("wrong fmt\n");
        return;
    }

    switch (pwfx->nSamplesPerSec)
    {
    case  8000:
        pwfx->nBlockAlign = 256 * pwfx->nChannels;
        break;
    case 11025:
        pwfx->nBlockAlign = 256 * pwfx->nChannels;
        break;
    case 22050:
        pwfx->nBlockAlign = 512 * pwfx->nChannels;
        break;
    case 44100:
        pwfx->nBlockAlign = 1024 * pwfx->nChannels;
        break;
    default: /*pwfx->nBlockAlign = nba;*/
        break;
    }
    pwfx->cbSize = sizeof(WORD);

    awfx->wSamplesPerBlock = (pwfx->nBlockAlign - (4 * pwfx->nChannels) * 2) / pwfx->nChannels + 1;
    pwfx->nAvgBytesPerSec = (pwfx->nSamplesPerSec * pwfx->nBlockAlign) / awfx->wSamplesPerBlock;
}
예제 #5
0
파일: msadp32.c 프로젝트: RareHare/reactos
/***********************************************************************
 *           ADPCM_StreamOpen
 *
 */
static	LRESULT	ADPCM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
{
    AcmAdpcmData*	aad;

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

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

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

    adsi->dwDriver = (DWORD_PTR)aad;

    if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
	adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
    {
	goto theEnd;
    }
    else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
             adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
    {
	/* resampling or mono <=> stereo not available
         * ADPCM 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;

#if 0
        {
            unsigned int nspb = ((IMAADPCMWAVEFORMAT*)adsi->pwfxSrc)->wSamplesPerBlock;
            FIXME("spb=%u\n", nspb);

            /* we check that in a block, after the header, samples are present on
             * 4-sample packet pattern
             * we also check that the block alignment is bigger than the expected size
             */
            if (((nspb - 1) & 3) != 0) goto theEnd;
            if ((((nspb - 1) / 2) + 4) * adsi->pwfxSrc->nChannels < adsi->pwfxSrc->nBlockAlign)
                goto theEnd;
        }
#endif

	/* adpcm decoding... */
	if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 2)
	    aad->convert = cvtSSms16K;
	if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 1)
	    aad->convert = cvtMMms16K;
    }
    else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
             adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ADPCM)
    {
	if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
	    adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
            adsi->pwfxSrc->wBitsPerSample != 16)
	    goto theEnd;
#if 0
        nspb = ((IMAADPCMWAVEFORMAT*)adsi->pwfxDst)->wSamplesPerBlock;
        FIXME("spb=%u\n", nspb);

        /* we check that in a block, after the header, samples are present on
         * 4-sample packet pattern
         * we also check that the block alignment is bigger than the expected size
         */
        if (((nspb - 1) & 3) != 0) goto theEnd;
        if ((((nspb - 1) / 2) + 4) * adsi->pwfxDst->nChannels < adsi->pwfxDst->nBlockAlign)
            goto theEnd;
#endif
#if 0
	/* adpcm coding... */
	if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 2)
	    aad->convert = cvtSS16msK;
	if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 1)
	    aad->convert = cvtMM16msK;
#endif
        FIXME("We don't support encoding yet\n");
        goto theEnd;
    }
    else goto theEnd;
    ADPCM_Reset(adsi, aad);

    return MMSYSERR_NOERROR;

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