since Hidenori removed his work (IMA ADPCM decoder), I resurected some old work I had started and never finished. The patch also contains a working encoder. A+
Name: imaadpcm ChangeLog: created an ACM IMA ADPCM codec License: X11 GenDate: 2002/05/10 20:32:05 UTC ModifiedFiles: documentation/samples/system.ini dlls/msacm/imaadp32/Makefile.in dlls/msacm/imaadp32/imaadp32.acm.spec dlls/msacm/imaadp32/imaadp32.c AddedFiles: =================================================================== RCS file: /home/cvs/cvsroot/wine/wine/documentation/samples/system.ini,v retrieving revision 1.5 diff -u -u -r1.5 system.ini --- documentation/samples/system.ini 5 May 2002 19:40:58 -0000 1.5 +++ documentation/samples/system.ini 10 May 2002 04:32:40 -0000 @@ -8,4 +8,4 @@ MPEGVideo=mciqtz.drv [drivers32] - +MSACM.adpcm=imaadp32.acm Index: dlls/msacm/imaadp32/Makefile.in =================================================================== RCS file: /home/cvs/cvsroot/wine/wine/dlls/msacm/imaadp32/Makefile.in,v retrieving revision 1.2 diff -u -u -r1.2 Makefile.in --- dlls/msacm/imaadp32/Makefile.in 9 May 2002 00:05:50 -0000 1.2 +++ dlls/msacm/imaadp32/Makefile.in 10 May 2002 04:40:23 -0000 @@ -3,7 +3,7 @@ SRCDIR = @srcdir@ VPATH = @srcdir@ MODULE = imaadp32.acm -IMPORTS = ntdll.dll +IMPORTS = winmm.dll user32.dll kernel32.dll ntdll.dll LDDLLFLAGS = @LDDLLFLAGS@ SYMBOLFILE = $(MODULE).tmp.o Index: dlls/msacm/imaadp32/imaadp32.acm.spec =================================================================== RCS file: /home/cvs/cvsroot/wine/wine/dlls/msacm/imaadp32/imaadp32.acm.spec,v retrieving revision 1.3 diff -u -u -r1.3 imaadp32.acm.spec --- dlls/msacm/imaadp32/imaadp32.acm.spec 9 May 2002 00:05:50 -0000 1.3 +++ dlls/msacm/imaadp32/imaadp32.acm.spec 10 May 2002 04:41:56 -0000 @@ -2,6 +2,6 @@ file imaadp32.acm type win32 -debug_channels () +debug_channels (adpcm) -@ stub DriverProc #(long long long long long) +@ stdcall DriverProc (long long long long long) ADPCM_DriverProc Index: dlls/msacm/imaadp32/imaadp32.c =================================================================== RCS file: /home/cvs/cvsroot/wine/wine/dlls/msacm/imaadp32/imaadp32.c,v retrieving revision 1.3 diff -u -u -r1.3 imaadp32.c --- dlls/msacm/imaadp32/imaadp32.c 5 May 2002 19:40:58 -0000 1.3 +++ dlls/msacm/imaadp32/imaadp32.c 10 May 2002 04:39:10 -0000 @@ -1 +1,937 @@ -/* all codes are removed by author */ +/* -*- tab-width: 8; c-basic-offset: 4 -*- */ + +/* + * ADPCM handling (includes both MS and IMA forms) + * + * Copyright (C) 2001 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 <assert.h> +#include <string.h> +#include "winnls.h" +#include "winbase.h" +#include "wingdi.h" +#include "winuser.h" +#include "msacm.h" +#include "mmreg.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 >> 4, &stepIndexL, &sampleL); + W16(dst + (2 * i + 0) * 4 + 0, sampleL); + process_nibble(*src++, &stepIndexL, &sampleL); + W16(dst + (2 * i + 1) * 4 + 0, sampleL); + } + for (i = 0; i < 4; i++) + { + process_nibble(*src >> 4, &stepIndexR, &sampleR); + W16(dst + (2 * i + 0) * 4 + 2, sampleR); + process_nibble(*src++, &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 >> 4, &stepIndex, &sample); + W16(dst, sample); dst += 2; + process_nibble(*src++, &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 = (HICON)0; + 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; + FIXME("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; + 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; + + /* 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; + 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; + + /* 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; +}
