/* * IMA ADPCM handling * * Copyright (C) 2001,2002 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #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); /* IMA encoding only */ BYTE stepIndexL; BYTE stepIndexR; /* short sample; */ } 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])) /*********************************************************************** * ADPCM_GetFormatIndex */ static DWORD ADPCM_GetFormatIndex(LPWAVEFORMATEX wfx) { int i, hi; Format* fmts; switch (wfx->wFormatTag) { case WAVE_FORMAT_PCM: hi = NUM_PCM_FORMATS; fmts = PCM_Formats; break; case WAVE_FORMAT_IMA_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; } /*********************************************************************** * 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); } /* IMA (or DVI) APDCM codec routines */ static const unsigned IMA_StepTable[89] = { 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19, 21, 23, 25, 28, 31, 34, 37, 41, 45, 50, 55, 60, 66, 73, 80, 88, 97, 107, 118, 130, 143, 157, 173, 190, 209, 230, 253, 279, 307, 337, 371, 408, 449, 494, 544, 598, 658, 724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358, 5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899, 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767 }; static const int IMA_IndexTable[16] = { -1, -1, -1, -1, 2, 4, 6, 8, -1, -1, -1, -1, 2, 4, 6, 8 }; static inline void clamp_step_index(int* stepIndex) { if (*stepIndex < 0 ) *stepIndex = 0; if (*stepIndex > 88) *stepIndex = 88; } static inline void clamp_sample(int* sample) { if (*sample < -32768) *sample = -32768; if (*sample > 32767) *sample = 32767; } static inline void process_nibble(unsigned char code, int* stepIndex, int* sample) { unsigned step; int diff; code &= 0x0F; step = IMA_StepTable[*stepIndex]; diff = step >> 3; if (code & 1) diff += step >> 2; if (code & 2) diff += step >> 1; if (code & 4) diff += step; if (code & 8) *sample -= diff; else *sample += diff; clamp_sample(sample); *stepIndex += IMA_IndexTable[code]; clamp_step_index(stepIndex); } static inline unsigned char generate_nibble(int in, int* stepIndex, int* sample) { int effdiff, diff = in - *sample; unsigned step; unsigned char code; if (diff < 0) { diff = -diff; code = 8; } else { code = 0; } step = IMA_StepTable[*stepIndex]; effdiff = (step >> 3); if (diff >= step) { code |= 4; diff -= step; effdiff += step; } step >>= 1; if (diff >= step) { code |= 2; diff -= step; effdiff += step; } step >>= 1; if (diff >= step) { code |= 1; effdiff += step; } if (code & 8) *sample -= effdiff; else *sample += effdiff; clamp_sample(sample); *stepIndex += IMA_IndexTable[code]; clamp_step_index(stepIndex); return code; } static void cvtSSima16K(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD nsrc, unsigned char* dst, LPDWORD ndst) { int i; int sampleL, sampleR; int stepIndexL, stepIndexR; int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxSrc)->wSamplesPerBlock; int nsamp; /* compute the number of entire blocks we can decode... * it's the min of the number of entire blocks in source buffer and the number * of entire blocks in destination buffer */ 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--; /* remove the sample in block header */ for (; nblock > 0; nblock--) { const unsigned char* in_src = src; /* handle headers first */ sampleL = R16(src); stepIndexL = (unsigned)*(src + 2); clamp_step_index(&stepIndexL); src += 4; W16(dst, sampleL); dst += 2; sampleR = R16(src); stepIndexR = (unsigned)*(src + 2); clamp_step_index(&stepIndexR); src += 4; W16(dst, sampleR); dst += 2; for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 8) { for (i = 0; i < 4; i++) { process_nibble(*src, &stepIndexL, &sampleL); W16(dst + (2 * i + 0) * 4 + 0, sampleL); process_nibble(*src++ >> 4, &stepIndexL, &sampleL); W16(dst + (2 * i + 1) * 4 + 0, sampleL); } for (i = 0; i < 4; i++) { process_nibble(*src , &stepIndexR, &sampleR); W16(dst + (2 * i + 0) * 4 + 2, sampleR); process_nibble(*src++ >>4, &stepIndexR, &sampleR); W16(dst + (2 * i + 1) * 4 + 2, sampleR); } dst += 32; } /* we have now to realign the source pointer on block */ src = in_src + adsi->pwfxSrc->nBlockAlign; } } static void cvtMMima16K(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD nsrc, unsigned char* dst, LPDWORD ndst) { int sample; int stepIndex; int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxSrc)->wSamplesPerBlock; int nsamp; /* compute the number of entire blocks we can decode... * it's the min of the number of entire blocks in source buffer and the number * of entire blocks in destination buffer */ DWORD nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign, *ndst / (nsamp_blk * 2)); *nsrc = nblock * adsi->pwfxSrc->nBlockAlign; *ndst = nblock * nsamp_blk * 2; nsamp_blk--; /* remove the sample in block header */ for (; nblock > 0; nblock--) { const unsigned char* in_src = src; /* handle header first */ sample = R16(src); stepIndex = (unsigned)*(src + 2); clamp_step_index(&stepIndex); src += 4; W16(dst, sample); dst += 2; for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2) { process_nibble(*src, &stepIndex, &sample); W16(dst, sample); dst += 2; process_nibble(*src++ >> 4, &stepIndex, &sample); W16(dst, sample); dst += 2; } /* we have now to realign the source pointer on block */ src = in_src + adsi->pwfxSrc->nBlockAlign; } } static void cvtSS16imaK(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD nsrc, unsigned char* dst, LPDWORD ndst) { int stepIndexL, stepIndexR; int sampleL, sampleR; BYTE code1, code2; int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxDst)->wSamplesPerBlock; int i, nsamp; /* compute the number of entire blocks we can decode... * it's the min of the number of entire blocks in source buffer and the number * of entire blocks in destination buffer */ DWORD nblock = min(*nsrc / (nsamp_blk * 2 * 2), *ndst / adsi->pwfxDst->nBlockAlign); *nsrc = nblock * (nsamp_blk * 2 * 2); *ndst = nblock * adsi->pwfxDst->nBlockAlign; stepIndexL = ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL; stepIndexR = ((AcmAdpcmData*)adsi->dwDriver)->stepIndexR; nsamp_blk--; /* so that we won't count the sample in header while filling the block */ for (; nblock > 0; nblock--) { char* in_dst = dst; /* generate header */ sampleL = R16(src); src += 2; W16(dst, sampleL); dst += 2; *dst = (unsigned char)(unsigned)stepIndexL; dst += 2; sampleR = R16(src); src += 2; W16(dst, sampleR); dst += 2; *dst = (unsigned char)(unsigned)stepIndexR; dst += 2; for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 8) { for (i = 0; i < 4; i++) { code1 = generate_nibble(R16(src + (2 * i + 0) * 2 + 0), &stepIndexL, &sampleL); code2 = generate_nibble(R16(src + (2 * i + 1) * 2 + 0), &stepIndexL, &sampleL); *dst++ = (code1 << 4) | code2; } for (i = 0; i < 4; i++) { code1 = generate_nibble(R16(src + (2 * i + 0) * 2 + 1), &stepIndexR, &sampleR); code2 = generate_nibble(R16(src + (2 * i + 1) * 2 + 1), &stepIndexR, &sampleR); *dst++ = (code1 << 4) | code2; } src += 32; } dst = in_dst + adsi->pwfxDst->nBlockAlign; } ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL = stepIndexL; ((AcmAdpcmData*)adsi->dwDriver)->stepIndexR = stepIndexR; } static void cvtMM16imaK(PACMDRVSTREAMINSTANCE adsi, const unsigned char* src, LPDWORD nsrc, unsigned char* dst, LPDWORD ndst) { int stepIndex; int sample; BYTE code1, code2; int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxDst)->wSamplesPerBlock; int nsamp; /* compute the number of entire blocks we can decode... * it's the min of the number of entire blocks in source buffer and the number * of entire blocks in destination buffer */ DWORD nblock = min(*nsrc / (nsamp_blk * 2), *ndst / adsi->pwfxDst->nBlockAlign); *nsrc = nblock * (nsamp_blk * 2); *ndst = nblock * adsi->pwfxDst->nBlockAlign; stepIndex = ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL; nsamp_blk--; /* so that we won't count the sample in header while filling the block */ for (; nblock > 0; nblock--) { char* in_dst = dst; /* generate header */ /* FIXME: what about the last effective sample from previous block ??? */ /* perhaps something like: * sample += R16(src); * clamp_sample(sample); * and with : * + saving the sample in adsi->dwDriver when all blocks are done + + reset should set the field in adsi->dwDriver to 0 too */ sample = R16(src); src += 2; W16(dst, sample); dst += 2; *dst = (unsigned char)(unsigned)stepIndex; dst += 2; for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2) { code1 = generate_nibble(R16(src), &stepIndex, &sample); src += 2; code2 = generate_nibble(R16(src), &stepIndex, &sample); src += 2; *dst++ = (code1 << 4) | code2; } dst = in_dst + adsi->pwfxDst->nBlockAlign; } ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL = stepIndex; } /*********************************************************************** * 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, IMA ADPCM */ add->cFilterTags = 0; add->hicon = NULL; MultiByteToWideChar( CP_ACP, 0, "WINE-ADPCM", -1, add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) ); MultiByteToWideChar( CP_ACP, 0, "Wine IMA 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 szImaAdPcm[]={'I','M','A',' ','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_IMA_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_IMA_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_IMA_ADPCM; aftd->cbFormatSize = sizeof(IMAADPCMWAVEFORMAT); aftd->cStandardFormats = NUM_ADPCM_FORMATS; lstrcpyW(aftd->szFormatTag, szImaAdPcm); 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_IMA_ADPCM: if (afd->dwFormatIndex >= NUM_ADPCM_FORMATS) 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; afd->pwfx->nBlockAlign = 1024; /* we got 4 bits per sample */ afd->pwfx->nAvgBytesPerSec = (afd->pwfx->nSamplesPerSec * 4) / 8; if (afd->cbwfx >= sizeof(WAVEFORMATEX)) afd->pwfx->cbSize = sizeof(WORD); if (afd->cbwfx >= sizeof(IMAADPCMWAVEFORMAT)) ((IMAADPCMWAVEFORMAT*)afd->pwfx)->wSamplesPerBlock = (1024 - 4 * afd->pwfx->nChannels) * (2 / afd->pwfx->nChannels) + 1; 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_IMA_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_IMA_ADPCM: adfs->pwfxDst->nBlockAlign = 1024; /* FIXME: not handling header overhead */ adfs->pwfxDst->nAvgBytesPerSec = ((adfs->pwfxDst->nSamplesPerSec * 4) / 8) * adfs->pwfxSrc->nChannels; ((IMAADPCMWAVEFORMAT*)adfs->pwfxDst)->wSamplesPerBlock = (1024 - 4 * adfs->pwfxSrc->nChannels) * (2 / adfs->pwfxSrc->nChannels) + 1; TRACE("setting spb=%u\n", ((IMAADPCMWAVEFORMAT*)adfs->pwfxDst)->wSamplesPerBlock); break; default: FIXME("\n"); break; } return MMSYSERR_NOERROR; } /*********************************************************************** * ADPCM_Reset * */ static void ADPCM_Reset(PACMDRVSTREAMINSTANCE adsi, AcmAdpcmData* aad) { aad->stepIndexL = aad->stepIndexR = 0; } /*********************************************************************** * ADPCM_StreamOpen * */ static LRESULT ADPCM_StreamOpen(PACMDRVSTREAMINSTANCE adsi) { AcmAdpcmData* aad; unsigned nspb; 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_IMA_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; nspb = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxSrc)->wSamplesPerBlock; TRACE("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; /* adpcm decoding... */ if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 2) aad->convert = cvtSSima16K; if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 1) aad->convert = cvtMMima16K; } else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM && adsi->pwfxDst->wFormatTag == WAVE_FORMAT_IMA_ADPCM) { if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec || adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels || adsi->pwfxSrc->wBitsPerSample != 16) goto theEnd; nspb = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxDst)->wSamplesPerBlock; TRACE("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; /* adpcm coding... */ if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 2) aad->convert = cvtSS16imaK; if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 1) aad->convert = cvtMM16imaK; } 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_IMA_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_IMA_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_IMA_ADPCM) { FIXME("misses the block header overhead\n"); adss->cbDstLength = 256 + adss->cbSrcLength / 4; } else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_IMA_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 IMA 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; }