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/*
* MS ADPCM handling
*
* Copyright (C) 2002 Eric Pouech
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#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"
/* see http://www.pcisys.net/~melanson/codecs/adpcm.txt for the details */
WINE_DEFAULT_DEBUG_CHANNEL(adpcm);
/***********************************************************************
* ADPCM_drvOpen
*/
static LRESULT ADPCM_drvOpen(LPCSTR str)
{
return 1;
}
/***********************************************************************
* ADPCM_drvClose
*/
static LRESULT ADPCM_drvClose(DWORD_PTR dwDevID)
{
return 1;
}
typedef struct tagAcmAdpcmData
{
void (*convert)(const ACMDRVSTREAMINSTANCE *adsi,
const unsigned char*, LPDWORD, unsigned char*, LPDWORD);
} AcmAdpcmData;
/* table to list all supported formats... those are the basic ones. this
* also helps given a unique index to each of the supported formats
*/
typedef struct
{
int nChannels;
int nBits;
int rate;
} Format;
static const Format PCM_Formats[] =
{
{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},
};
static const Format ADPCM_Formats[] =
{
{1, 4, 8000}, {2, 4, 8000}, {1, 4, 11025}, {2, 4, 11025},
{1, 4, 22050}, {2, 4, 22050}, {1, 4, 44100}, {2, 4, 44100},
};
#define NUM_PCM_FORMATS (sizeof(PCM_Formats) / sizeof(PCM_Formats[0]))
#define NUM_ADPCM_FORMATS (sizeof(ADPCM_Formats) / sizeof(ADPCM_Formats[0]))
static int MS_Delta[] =
{
230, 230, 230, 230, 307, 409, 512, 614,
768, 614, 512, 409, 307, 230, 230, 230
};
static ADPCMCOEFSET MSADPCM_CoeffSet[] =
{
{256, 0}, {512, -256}, {0, 0}, {192, 64}, {240, 0}, {460, -208}, {392, -232}
};
/***********************************************************************
* ADPCM_GetFormatIndex
*/
static DWORD ADPCM_GetFormatIndex(const WAVEFORMATEX* wfx)
{
int i, hi;
const Format* fmts;
switch (wfx->wFormatTag)
{
case WAVE_FORMAT_PCM:
hi = NUM_PCM_FORMATS;
fmts = PCM_Formats;
break;
case WAVE_FORMAT_ADPCM:
hi = NUM_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;
}
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));
}
/***********************************************************************
* R16
*
* Read a 16 bit sample (correctly handles endianess)
*/
static inline short R16(const unsigned char* src)
{
return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8));
}
/***********************************************************************
* W16
*
* Write a 16 bit sample (correctly handles endianess)
*/
static inline void W16(unsigned char* dst, short s)
{
dst[0] = LOBYTE(s);
dst[1] = HIBYTE(s);
}
static inline void clamp_sample(int* sample)
{
if (*sample < -32768) *sample = -32768;
if (*sample > 32767) *sample = 32767;
}
static inline void process_nibble(unsigned nibble, int* idelta,
int* sample1, int* sample2,
const ADPCMCOEFSET* coeff)
{
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;
}
static void cvtSSms16K(const ACMDRVSTREAMINSTANCE *adsi,
const unsigned char* src, LPDWORD nsrc,
unsigned char* dst, LPDWORD ndst)
{
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 * 2 * 2));
*nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
*ndst = nblock * nsamp_blk * 2 * 2;
nsamp_blk -= 2; /* see below for samples from block head */
for (; nblock > 0; nblock--)
{
const unsigned char* in_src = src;
assert(*src <= 6);
coeffL = MSADPCM_CoeffSet[*src++];
assert(*src <= 6);
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;
/* 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;
}
}
static void cvtMMms16K(const ACMDRVSTREAMINSTANCE *adsi,
const unsigned char* src, LPDWORD nsrc,
unsigned char* dst, LPDWORD ndst)
{
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 * 2));
*nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
*ndst = nblock * nsamp_blk * 2;
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 */
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;
}
}
#if 0
static void cvtSS16msK(PACMDRVSTREAMINSTANCE adsi,
const unsigned char* src, LPDWORD nsrc,
unsigned char* dst, LPDWORD ndst)
{
}
static void cvtMM16msK(PACMDRVSTREAMINSTANCE adsi,
const unsigned char* src, LPDWORD nsrc,
unsigned char* dst, LPDWORD ndst)
{
}
#endif
/***********************************************************************
* ADPCM_DriverDetails
*
*/
static LRESULT ADPCM_DriverDetails(PACMDRIVERDETAILSW add)
{
add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
add->wMid = 0xFF;
add->wPid = 0x00;
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, sizeof(add->szShortName)/sizeof(WCHAR) );
MultiByteToWideChar( CP_ACP, 0, "Wine MS ADPCM converter", -1,
add->szLongName, sizeof(add->szLongName)/sizeof(WCHAR) );
MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
add->szCopyright, sizeof(add->szCopyright)/sizeof(WCHAR) );
MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
add->szLicensing, sizeof(add->szLicensing)/sizeof(WCHAR) );
add->szFeatures[0] = 0;
return MMSYSERR_NOERROR;
}
/***********************************************************************
* ADPCM_FormatTagDetails
*
*/
static LRESULT ADPCM_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
{
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 thru */
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 = NUM_PCM_FORMATS;
lstrcpyW(aftd->szFormatTag, szPcm);
break;
case 1:
aftd->dwFormatTag = WAVE_FORMAT_ADPCM;
aftd->cbFormatSize = sizeof(ADPCMWAVEFORMAT) + (7 - 1) * sizeof(ADPCMCOEFSET);
aftd->cStandardFormats = NUM_ADPCM_FORMATS;
lstrcpyW(aftd->szFormatTag, szMsAdPcm);
break;
}
return MMSYSERR_NOERROR;
}
/***********************************************************************
* 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;
}
/***********************************************************************
* 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:
FIXME("\n");
break;
}
return MMSYSERR_NOERROR;
}
/***********************************************************************
* ADPCM_Reset
*
*/
static void ADPCM_Reset(PACMDRVSTREAMINSTANCE adsi, AcmAdpcmData* aad)
{
}
/***********************************************************************
* 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;
}
/***********************************************************************
* ADPCM_StreamClose
*
*/
static LRESULT ADPCM_StreamClose(PACMDRVSTREAMINSTANCE adsi)
{
HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
return MMSYSERR_NOERROR;
}
/***********************************************************************
* ADPCM_StreamSize
*
*/
static LRESULT ADPCM_StreamSize(const ACMDRVSTREAMINSTANCE *adsi, PACMDRVSTREAMSIZE adss)
{
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;
}
/***********************************************************************
* ADPCM_StreamConvert
*
*/
static LRESULT ADPCM_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
{
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;
}
/**************************************************************************
* ADPCM_DriverProc [exported]
*/
LRESULT CALLBACK ADPCM_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
LPARAM dwParam1, LPARAM dwParam2)
{
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);
}
}
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