msadp32.c File Reference

#include <assert.h>
#include <stdarg.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winnls.h"
#include "mmsystem.h"
#include "mmreg.h"
#include "msacm.h"
#include "msacmdrv.h"
#include "wine/debug.h"

Include dependency graph for msadp32.c:

Go to the source code of this file.

Classes
struct	tagAcmAdpcmData
struct	Format

Typedefs
typedef struct tagAcmAdpcmData	AcmAdpcmData

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (adpcm)
static LRESULT	ADPCM_drvOpen (LPCSTR str)
static LRESULT	ADPCM_drvClose (DWORD_PTR dwDevID)
static DWORD	ADPCM_GetFormatIndex (const WAVEFORMATEX *wfx)
static void	init_wfx_adpcm (ADPCMWAVEFORMAT *awfx)
static short	R16 (const unsigned char *src)
static void	W16 (unsigned char *dst, short s)
static void	clamp_sample (int *sample)
static void	process_nibble (unsigned nibble, int *idelta, int *sample1, int *sample2, const ADPCMCOEFSET *coeff)
static unsigned char	C168 (short s)
static void	cvtSSms16K (const ACMDRVSTREAMINSTANCE *adsi, const unsigned char *src, LPDWORD nsrc, unsigned char *dst, LPDWORD ndst)
static void	cvtMMms16K (const ACMDRVSTREAMINSTANCE *adsi, const unsigned char *src, LPDWORD nsrc, unsigned char *dst, LPDWORD ndst)
static LRESULT	ADPCM_DriverDetails (PACMDRIVERDETAILSW add)
static LRESULT	ADPCM_FormatTagDetails (PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
static LRESULT	ADPCM_FormatDetails (PACMFORMATDETAILSW afd, DWORD dwQuery)
static LRESULT	ADPCM_FormatSuggest (PACMDRVFORMATSUGGEST adfs)
static void	ADPCM_Reset (PACMDRVSTREAMINSTANCE adsi, AcmAdpcmData *aad)
static LRESULT	ADPCM_StreamOpen (PACMDRVSTREAMINSTANCE adsi)
static LRESULT	ADPCM_StreamClose (PACMDRVSTREAMINSTANCE adsi)
static LRESULT	ADPCM_StreamSize (const ACMDRVSTREAMINSTANCE *adsi, PACMDRVSTREAMSIZE adss)
static LRESULT	ADPCM_StreamConvert (PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
LRESULT CALLBACK	ADPCM_DriverProc (DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg, LPARAM dwParam1, LPARAM dwParam2)

Variables
static const Format	PCM_Formats []
static const Format	ADPCM_Formats []
static int	MS_Delta []
static ADPCMCOEFSET	MSADPCM_CoeffSet []

Typedef Documentation

AcmAdpcmData

typedef struct tagAcmAdpcmData AcmAdpcmData

Function Documentation

ADPCM_DriverDetails()

static LRESULT ADPCM_DriverDetails ( PACMDRIVERDETAILSW  add )

static

Definition at line 376 of file msadp32.c.

{
    add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
    add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
    add->wMid = MM_MICROSOFT;
    add->wPid = MM_MSFT_ACM_MSADPCM;
    add->vdwACM = 0x01000000;
    add->vdwDriver = 0x01000000;
    add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
    add->cFormatTags = 2; /* PCM, MS ADPCM */
    add->cFilterTags = 0;
    add->hicon = NULL;
    MultiByteToWideChar( CP_ACP, 0, "MS-ADPCM", -1,
                         add->szShortName, ARRAY_SIZE( add->szShortName ));
    MultiByteToWideChar( CP_ACP, 0, "Wine MS ADPCM converter", -1,
                         add->szLongName, ARRAY_SIZE( add->szLongName ));
    MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
                         add->szCopyright, ARRAY_SIZE( add->szCopyright ));
    MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
                         add->szLicensing, ARRAY_SIZE( add->szLicensing ));
    add->szFeatures[0] = 0;
 
    return MMSYSERR_NOERROR;
}

Referenced by ADPCM_DriverProc().

ADPCM_DriverProc()

LRESULT CALLBACK ADPCM_DriverProc	(	DWORD_PTR	dwDevID,
		HDRVR	hDriv,
		UINT	wMsg,
		LPARAM	dwParam1,
		LPARAM	dwParam2
	)

Definition at line 785 of file msadp32.c.

{
    TRACE("(%08lx %p %04x %08lx %08lx);\n",
          dwDevID, hDriv, wMsg, dwParam1, dwParam2);
 
    switch (wMsg)
    {
    case DRV_LOAD:      return 1;
    case DRV_FREE:      return 1;
    case DRV_OPEN:      return ADPCM_drvOpen((LPSTR)dwParam1);
    case DRV_CLOSE:     return ADPCM_drvClose(dwDevID);
    case DRV_ENABLE:        return 1;
    case DRV_DISABLE:       return 1;
    case DRV_QUERYCONFIGURE:    return 1;
    case DRV_CONFIGURE:     MessageBoxA(0, "MSACM MS ADPCM 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 ADPCM_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
 
    case ACMDM_FORMATTAG_DETAILS:
    return ADPCM_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
 
    case ACMDM_FORMAT_DETAILS:
    return ADPCM_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
 
    case ACMDM_FORMAT_SUGGEST:
    return ADPCM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
 
    case ACMDM_STREAM_OPEN:
    return ADPCM_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
 
    case ACMDM_STREAM_CLOSE:
    return ADPCM_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
 
    case ACMDM_STREAM_SIZE:
    return ADPCM_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
 
    case ACMDM_STREAM_CONVERT:
    return ADPCM_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);
    }
}

ADPCM_drvClose()

static LRESULT ADPCM_drvClose ( DWORD_PTR  dwDevID )

static

Definition at line 51 of file msadp32.c.

{
    return 1;
}

Referenced by ADPCM_DriverProc().

ADPCM_drvOpen()

static LRESULT ADPCM_drvOpen ( LPCSTR  str )

static

Definition at line 43 of file msadp32.c.

{
    return 1;
}

Referenced by ADPCM_DriverProc().

ADPCM_FormatDetails()

static LRESULT ADPCM_FormatDetails ( PACMFORMATDETAILSW  afd, DWORD  dwQuery  )

static

Definition at line 458 of file msadp32.c.

{
    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 >= ARRAY_SIZE(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 >= ARRAY_SIZE(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;
}

Referenced by ADPCM_DriverProc().

ADPCM_FormatSuggest()

static LRESULT ADPCM_FormatSuggest ( PACMDRVFORMATSUGGEST  adfs )

static

Definition at line 510 of file msadp32.c.

{
    /* 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:
        if (adfs->cbwfxDst < sizeof(ADPCMWAVEFORMAT) + (7 - 1) * sizeof(ADPCMCOEFSET))
            return ACMERR_NOTPOSSIBLE;
        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;
}

Referenced by ADPCM_DriverProc().

ADPCM_FormatTagDetails()

static LRESULT ADPCM_FormatTagDetails ( PACMFORMATTAGDETAILSW  aftd, DWORD  dwQuery  )

static

Definition at line 405 of file msadp32.c.

{
    static const WCHAR szPcm[]={'P','C','M',0};
    static const WCHAR szMsAdPcm[]={'M','i','c','r','o','s','o','f','t',' ','A','D','P','C','M',0};
 
    switch (dwQuery)
    {
    case ACM_FORMATTAGDETAILSF_INDEX:
    if (aftd->dwFormatTagIndex >= 2) return ACMERR_NOTPOSSIBLE;
    break;
    case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
    if (aftd->dwFormatTag == WAVE_FORMAT_UNKNOWN)
        {
            aftd->dwFormatTagIndex = 1; /* WAVE_FORMAT_ADPCM is bigger than PCM */
        break;
    }
    /* fall through */
    case ACM_FORMATTAGDETAILSF_FORMATTAG:
    switch (aftd->dwFormatTag)
        {
    case WAVE_FORMAT_PCM:   aftd->dwFormatTagIndex = 0; break;
    case WAVE_FORMAT_ADPCM: aftd->dwFormatTagIndex = 1; break;
    default:        return ACMERR_NOTPOSSIBLE;
    }
    break;
    default:
    WARN("Unsupported query %08x\n", dwQuery);
    return MMSYSERR_NOTSUPPORTED;
    }
 
    aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
    switch (aftd->dwFormatTagIndex)
    {
    case 0:
    aftd->dwFormatTag = WAVE_FORMAT_PCM;
    aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
    aftd->cStandardFormats = ARRAY_SIZE(PCM_Formats);
        lstrcpyW(aftd->szFormatTag, szPcm);
        break;
    case 1:
    aftd->dwFormatTag = WAVE_FORMAT_ADPCM;
    aftd->cbFormatSize = sizeof(ADPCMWAVEFORMAT) + (7 - 1) * sizeof(ADPCMCOEFSET);
    aftd->cStandardFormats = ARRAY_SIZE(ADPCM_Formats);
        lstrcpyW(aftd->szFormatTag, szMsAdPcm);
    break;
    }
    return MMSYSERR_NOERROR;
}

Referenced by ADPCM_DriverProc().

ADPCM_GetFormatIndex()

static DWORD ADPCM_GetFormatIndex ( const WAVEFORMATEX *  wfx )

static

Definition at line 101 of file msadp32.c.

{
    int             i, hi;
    const Format*   fmts;
 
    switch (wfx->wFormatTag)
    {
    case WAVE_FORMAT_PCM:
    hi = ARRAY_SIZE(PCM_Formats);
    fmts = PCM_Formats;
    break;
    case WAVE_FORMAT_ADPCM:
    hi = ARRAY_SIZE(ADPCM_Formats);
    fmts = ADPCM_Formats;
    break;
    default:
    return 0xFFFFFFFF;
    }
 
    for (i = 0; i < hi; i++)
    {
    if (wfx->nChannels == fmts[i].nChannels &&
        wfx->nSamplesPerSec == fmts[i].rate &&
        wfx->wBitsPerSample == fmts[i].nBits)
        return i;
    }
 
    switch (wfx->wFormatTag)
    {
    case WAVE_FORMAT_PCM:
    if(3 > wfx->nChannels &&
       wfx->nChannels > 0 &&
       wfx->nAvgBytesPerSec == 2 * wfx->nSamplesPerSec * wfx->nChannels &&
       wfx->nBlockAlign == 2 * wfx->nChannels &&
       wfx->wBitsPerSample == 16)
       return hi;
    break;
    case WAVE_FORMAT_ADPCM:
    if(3 > wfx->nChannels &&
       wfx->nChannels > 0 &&
       wfx->wBitsPerSample == 4 &&
       wfx->cbSize == 32)
       return hi;
    break;
    }
 
    return 0xFFFFFFFF;
}

Referenced by ADPCM_FormatDetails(), ADPCM_FormatSuggest(), ADPCM_StreamOpen(), and init_wfx_adpcm().

ADPCM_Reset()

static void ADPCM_Reset ( PACMDRVSTREAMINSTANCE  adsi, AcmAdpcmData *  aad  )

static

Definition at line 567 of file msadp32.c.

{
}

Referenced by ADPCM_StreamConvert(), and ADPCM_StreamOpen().

ADPCM_StreamClose()

static LRESULT ADPCM_StreamClose ( PACMDRVSTREAMINSTANCE  adsi )

static

Definition at line 668 of file msadp32.c.

{
    HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
    return MMSYSERR_NOERROR;
}

Referenced by ADPCM_DriverProc().

ADPCM_StreamConvert()

static LRESULT ADPCM_StreamConvert ( PACMDRVSTREAMINSTANCE  adsi, PACMDRVSTREAMHEADER  adsh  )

static

Definition at line 752 of file msadp32.c.

{
    AcmAdpcmData*   aad = (AcmAdpcmData*)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 (%08x), 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))
    {
    ADPCM_Reset(adsi, aad);
    }
 
    aad->convert(adsi, adsh->pbSrc, &nsrc, adsh->pbDst, &ndst);
    adsh->cbSrcLengthUsed = nsrc;
    adsh->cbDstLengthUsed = ndst;
 
    return MMSYSERR_NOERROR;
}

Referenced by ADPCM_DriverProc().

ADPCM_StreamOpen()

static LRESULT ADPCM_StreamOpen ( PACMDRVSTREAMINSTANCE  adsi )

static

Definition at line 575 of file msadp32.c.

{
    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 */
    if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
        adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels)
        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->nChannels == 2)
        aad->convert = cvtSSms16K;
    else if (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;
}

Referenced by ADPCM_DriverProc().

ADPCM_StreamSize()

static LRESULT ADPCM_StreamSize ( const ACMDRVSTREAMINSTANCE *  adsi, PACMDRVSTREAMSIZE  adss  )

static

Definition at line 678 of file msadp32.c.

{
    DWORD nblocks;
    WORD wSamplesPerBlock;
    /* wSamplesPerBlock formula comes from MSDN ADPCMWAVEFORMAT page.*/
    switch (adss->fdwSize)
    {
    case ACM_STREAMSIZEF_DESTINATION:
    /* cbDstLength => cbSrcLength */
    if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
        adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ADPCM)
        {
        wSamplesPerBlock = adsi->pwfxDst->nBlockAlign * 2 / adsi->pwfxDst->nChannels - 12;
        nblocks = adss->cbDstLength / adsi->pwfxDst->nBlockAlign;
        if (nblocks == 0)
        return ACMERR_NOTPOSSIBLE;
        adss->cbSrcLength = nblocks * adsi->pwfxSrc->nBlockAlign * wSamplesPerBlock;
    }
        else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
                 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
        {
        wSamplesPerBlock = adsi->pwfxSrc->nBlockAlign * 2 / adsi->pwfxSrc->nChannels - 12;
        nblocks = adss->cbDstLength / (adsi->pwfxDst->nBlockAlign * wSamplesPerBlock);
        if (nblocks == 0)
        return ACMERR_NOTPOSSIBLE;
        adss->cbSrcLength = nblocks * adsi->pwfxSrc->nBlockAlign;
    }
        else
        {
        return MMSYSERR_NOTSUPPORTED;
    }
    break;
    case ACM_STREAMSIZEF_SOURCE:
    /* cbSrcLength => cbDstLength */
    if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
        adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ADPCM)
        {
        wSamplesPerBlock = adsi->pwfxDst->nBlockAlign * 2 / adsi->pwfxDst->nChannels - 12;
        nblocks = adss->cbSrcLength / (adsi->pwfxSrc->nBlockAlign * wSamplesPerBlock);
        if (nblocks == 0)
        return ACMERR_NOTPOSSIBLE;
        if (adss->cbSrcLength % (adsi->pwfxSrc->nBlockAlign * wSamplesPerBlock))
        /* Round block count up. */
        nblocks++;
        adss->cbDstLength = nblocks * adsi->pwfxDst->nBlockAlign;
    }
        else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
                 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
        {
        wSamplesPerBlock = adsi->pwfxSrc->nBlockAlign * 2 / adsi->pwfxSrc->nChannels - 12;
        nblocks = adss->cbSrcLength / adsi->pwfxSrc->nBlockAlign;
        if (nblocks == 0)
        return ACMERR_NOTPOSSIBLE;
        if (adss->cbSrcLength % adsi->pwfxSrc->nBlockAlign)
        /* Round block count up. */
        nblocks++;
        adss->cbDstLength = nblocks * adsi->pwfxDst->nBlockAlign * wSamplesPerBlock;
    }
        else
        {
        return MMSYSERR_NOTSUPPORTED;
    }
    break;
    default:
    WARN("Unsupported query %08x\n", adss->fdwSize);
    return MMSYSERR_NOTSUPPORTED;
    }
    return MMSYSERR_NOERROR;
}

Referenced by ADPCM_DriverProc().

C168()

static unsigned char C168 ( short  s )

inlinestatic

Definition at line 223 of file msadp32.c.

{
    return HIBYTE(s) ^ (unsigned char)0x80;
}

Referenced by cvtMMms16K(), and cvtSSms16K().

clamp_sample()

static void clamp_sample ( int *  sample )

inlinestatic

Definition at line 198 of file msadp32.c.

{
    if (*sample < -32768) *sample = -32768;
    if (*sample >  32767) *sample =  32767;
}

Referenced by process_nibble().

cvtMMms16K()

static void cvtMMms16K ( const ACMDRVSTREAMINSTANCE *  adsi, const unsigned char *  src, LPDWORD  nsrc, unsigned char *  dst, LPDWORD  ndst  )

static

Definition at line 302 of file msadp32.c.

{
    int                 idelta;
    int                 sample1, sample2;
    ADPCMCOEFSET        coeff;
    int                 nsamp;
    int             nsamp_blk = ((ADPCMWAVEFORMAT*)adsi->pwfxSrc)->wSamplesPerBlock;
    DWORD           nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign,
                                     *ndst / (nsamp_blk * adsi->pwfxDst->nBlockAlign));
 
    *nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
    *ndst = nblock * nsamp_blk * adsi->pwfxDst->nBlockAlign;
 
    nsamp_blk -= 2; /* see below for samples from block head */
    for (; nblock > 0; nblock--)
    {
        const unsigned char*    in_src = src;
 
        assert(*src <= 6);
        coeff = MSADPCM_CoeffSet[*src++];
 
        idelta =  R16(src);     src += 2;
        sample1 = R16(src);     src += 2;
        sample2 = R16(src);     src += 2;
 
        /* store samples from block head */
        if(adsi->pwfxDst->wBitsPerSample == 8){
            *dst = C168(sample2);    ++dst;
            *dst = C168(sample1);    ++dst;
 
            for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2)
            {
                process_nibble(*src >> 4, &idelta, &sample1, &sample2, &coeff);
                *dst = C168(sample1); ++dst;
                process_nibble(*src++ & 0x0F, &idelta, &sample1, &sample2, &coeff);
                *dst = C168(sample1); ++dst;
            }
        }else if(adsi->pwfxDst->wBitsPerSample == 16){
            W16(dst, sample2);      dst += 2;
            W16(dst, sample1);      dst += 2;
 
            for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2)
            {
                process_nibble(*src >> 4, &idelta, &sample1, &sample2, &coeff);
                W16(dst, sample1); dst += 2;
                process_nibble(*src++ & 0x0F, &idelta, &sample1, &sample2, &coeff);
                W16(dst, sample1); dst += 2;
            }
        }
 
        src = in_src + adsi->pwfxSrc->nBlockAlign;
    }
}

Referenced by ADPCM_StreamOpen().

cvtSSms16K()

static void cvtSSms16K ( const ACMDRVSTREAMINSTANCE *  adsi, const unsigned char *  src, LPDWORD  nsrc, unsigned char *  dst, LPDWORD  ndst  )

static

Definition at line 228 of file msadp32.c.

{
    int                 ideltaL, ideltaR;
    int                 sample1L, sample2L;
    int                 sample1R, sample2R;
    ADPCMCOEFSET        coeffL, coeffR;
    int                 nsamp;
    int             nsamp_blk = ((ADPCMWAVEFORMAT*)adsi->pwfxSrc)->wSamplesPerBlock;
    DWORD           nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign,
                                     *ndst / (nsamp_blk * adsi->pwfxDst->nBlockAlign));
 
    *nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
    *ndst = nblock * nsamp_blk * adsi->pwfxDst->nBlockAlign;
 
    nsamp_blk -= 2; /* see below for samples from block head */
    for (; nblock > 0; nblock--)
    {
        const unsigned char*    in_src = src;
 
        /* Catch a problem from Tomb Raider III (bug 21000) where it passes
         * invalid data after a valid sequence of blocks */
        if (*src > 6 || *(src + 1) > 6)
        {
            /* Recalculate the amount of used output buffer. We are not changing
             * nsrc, let's assume the bad data was parsed */
            *ndst -= nblock * nsamp_blk * adsi->pwfxDst->nBlockAlign;
            WARN("Invalid ADPCM data, stopping conversion\n");
            break;
        }
        coeffL = MSADPCM_CoeffSet[*src++];
        coeffR = MSADPCM_CoeffSet[*src++];
 
        ideltaL  = R16(src);    src += 2;
        ideltaR  = R16(src);    src += 2;
        sample1L = R16(src);    src += 2;
        sample1R = R16(src);    src += 2;
        sample2L = R16(src);    src += 2;
        sample2R = R16(src);    src += 2;
 
        if(adsi->pwfxDst->wBitsPerSample == 8){
            /* store samples from block head */
            *dst = C168(sample2L);      ++dst;
            *dst = C168(sample2R);      ++dst;
            *dst = C168(sample1L);      ++dst;
            *dst = C168(sample1R);      ++dst;
 
            for (nsamp = nsamp_blk; nsamp > 0; nsamp--)
            {
                process_nibble(*src >> 4, &ideltaL, &sample1L, &sample2L, &coeffL);
                *dst = C168(sample1L); ++dst;
                process_nibble(*src++ & 0x0F, &ideltaR, &sample1R, &sample2R, &coeffR);
                *dst = C168(sample1R); ++dst;
            }
        }else if(adsi->pwfxDst->wBitsPerSample == 16){
            /* store samples from block head */
            W16(dst, sample2L);      dst += 2;
            W16(dst, sample2R);      dst += 2;
            W16(dst, sample1L);      dst += 2;
            W16(dst, sample1R);      dst += 2;
 
            for (nsamp = nsamp_blk; nsamp > 0; nsamp--)
            {
                process_nibble(*src >> 4, &ideltaL, &sample1L, &sample2L, &coeffL);
                W16(dst, sample1L); dst += 2;
                process_nibble(*src++ & 0x0F, &ideltaR, &sample1R, &sample2R, &coeffR);
                W16(dst, sample1R); dst += 2;
            }
        }
        src = in_src + adsi->pwfxSrc->nBlockAlign;
    }
}

Referenced by ADPCM_StreamOpen().

init_wfx_adpcm()

static void init_wfx_adpcm ( ADPCMWAVEFORMAT *  awfx )

static

Definition at line 150 of file msadp32.c.

{
    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));
}

Referenced by ADPCM_FormatDetails(), and ADPCM_FormatSuggest().

process_nibble()

static void process_nibble ( unsigned  nibble, int *  idelta, int *  sample1, int *  sample2, const ADPCMCOEFSET *  coeff  )

inlinestatic

Definition at line 204 of file msadp32.c.

{
    int sample;
    int snibble;
 
    /* nibble is in fact a signed 4 bit integer => propagate sign if needed */
    snibble = (nibble & 0x08) ? (nibble - 16) : nibble;
    sample = ((*sample1 * coeff->iCoef1) + (*sample2 * coeff->iCoef2)) / 256 +
        snibble * *idelta;
    clamp_sample(&sample);
 
    *sample2 = *sample1;
    *sample1 = sample;
    *idelta = ((MS_Delta[nibble] * *idelta) / 256);
    if (*idelta < 16) *idelta = 16;
}

Referenced by cvtMMms16K(), and cvtSSms16K().

R16()

static short R16 ( const unsigned char *  src )

inlinestatic

Definition at line 182 of file msadp32.c.

{
    return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8));
}

Referenced by cvtMMms16K(), and cvtSSms16K().

W16()

static void W16 ( unsigned char *  dst, short  s  )

inlinestatic

Definition at line 192 of file msadp32.c.

{
    dst[0] = LOBYTE(s);
    dst[1] = HIBYTE(s);
}

Referenced by cvtMMms16K(), and cvtSSms16K().

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

adpcm

)

Variable Documentation

ADPCM_Formats

const Format ADPCM_Formats[]

static

Initial value:

=
{
    {1,  4,  8000}, {2, 4,  8000},  {1,  4, 11025}, {2,  4, 11025},
    {1,  4, 22050}, {2, 4, 22050},  {1,  4, 44100}, {2,  4, 44100},
}

Definition at line 80 of file msadp32.c.

Referenced by ADPCM_FormatDetails(), ADPCM_FormatTagDetails(), and ADPCM_GetFormatIndex().

MS_Delta

int MS_Delta[]

static

Initial value:

=
{
    230, 230, 230, 230, 307, 409, 512, 614,
    768, 614, 512, 409, 307, 230, 230, 230
}

Definition at line 86 of file msadp32.c.

Referenced by process_nibble().

MSADPCM_CoeffSet

ADPCMCOEFSET MSADPCM_CoeffSet[]

static

Initial value:

=
{
    {256, 0}, {512, -256}, {0, 0}, {192, 64}, {240, 0}, {460, -208}, {392, -232}
}

Definition at line 93 of file msadp32.c.

Referenced by cvtMMms16K(), cvtSSms16K(), and init_wfx_adpcm().

PCM_Formats

const Format PCM_Formats[]

static

Initial value:

=
{
    {1,  8,  8000}, {2,  8,  8000}, {1, 16,  8000}, {2, 16,  8000},
    {1,  8, 11025}, {2,  8, 11025}, {1, 16, 11025}, {2, 16, 11025},
    {1,  8, 22050}, {2,  8, 22050}, {1, 16, 22050}, {2, 16, 22050},
    {1,  8, 44100}, {2,  8, 44100}, {1, 16, 44100}, {2, 16, 44100},
}

Definition at line 72 of file msadp32.c.

Referenced by ADPCM_FormatDetails(), ADPCM_FormatTagDetails(), and ADPCM_GetFormatIndex().