-/*
- * 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 Street, 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 DWORD ADPCM_drvOpen(LPCSTR str)
-{
- return 1;
-}
-
-/***********************************************************************
- * ADPCM_drvClose
- */
-static DWORD ADPCM_drvClose(DWORD dwDevID)
-{
- return 1;
-}
-
-typedef struct tagAcmAdpcmData
-{
- void (*convert)(PACMDRVSTREAMINSTANCE 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 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 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(WAVEFORMATEX* wfx)
-{
- int i, hi;
- 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;
- }
-
- 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; break;
- case 11025: pwfx->nBlockAlign = 256; break;
- case 22050: pwfx->nBlockAlign = 512; break;
- default:
- case 44100: pwfx->nBlockAlign = 1024; 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 - (7 * pwfx->nChannels)) * (2 / pwfx->nChannels) + 2;
- 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(PACMDRVSTREAMINSTANCE 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(PACMDRVSTREAMINSTANCE 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, "WINE-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 WCHAR szPcm[]={'P','C','M',0};
- static WCHAR szMsAdPcm[]={'M','S',' ','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 %08lx\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 %08lx\n", afd->dwFormatTag);
- return MMSYSERR_INVALPARAM;
- }
- 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;
-}
-
-/***********************************************************************
- * ADPCM_FormatSuggest
- *
- */
-static LRESULT ADPCM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
-{
- /* some tests ... */
- if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
- adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
- 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;
- }
-
- /* check if result is ok */
- if (ADPCM_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_ADPCM:
- init_wfx_adpcm((ADPCMWAVEFORMAT*)adfs->pwfxDst);
- 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)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 alignement 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 alignement 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_round
- *
- */
-static inline DWORD ADPCM_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;
-}
-
-/***********************************************************************
- * ADPCM_StreamSize
- *
- */
-static LRESULT ADPCM_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_ADPCM)
- {
- /* don't take block overhead into account, doesn't matter too much */
- adss->cbSrcLength = adss->cbDstLength * 4;
- }
- else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
- 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_ADPCM)
- {
- FIXME("misses the block header overhead\n");
- adss->cbDstLength = 256 + adss->cbSrcLength / 4;
- }
- else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
- 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;
-}
-
-/***********************************************************************
- * 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 (%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))
- {
- 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 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 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);
- }
- return 0;
-}
projects / reactos.git / commitdiff