| /* |
| * 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., 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_drvClose |
| */ |
| static LRESULT ADPCM_drvClose(DWORD_PTR 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 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])) |
| |
| /*********************************************************************** |
| * 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_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; |
| } |
| |
| 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_IMA_ADPCM: |
| if(3 > wfx->nChannels && |
| wfx->nChannels > 0 && |
| wfx->wBitsPerSample == 4 && |
| wfx->cbSize == 2) |
| return hi; |
| break; |
| } |
| |
| return 0xFFFFFFFF; |
| } |
| |
| static void init_wfx_ima_adpcm(IMAADPCMWAVEFORMAT* awfx/*, DWORD nba*/) |
| { |
| register WAVEFORMATEX* pwfx = &awfx->wfx; |
| |
| /* we assume wFormatTag, nChannels, nSamplesPerSec and wBitsPerSample |
| * have been initialized... */ |
| |
| if (pwfx->wFormatTag != WAVE_FORMAT_IMA_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: /*pwfx->nBlockAlign = nba;*/ break; |
| } |
| pwfx->cbSize = sizeof(WORD); |
| |
| awfx->wSamplesPerBlock = (pwfx->nBlockAlign - (4 * pwfx->nChannels) * 2) / pwfx->nChannels + 1; |
| pwfx->nAvgBytesPerSec = (pwfx->nSamplesPerSec * pwfx->nBlockAlign) / awfx->wSamplesPerBlock; |
| } |
| |
| /*********************************************************************** |
| * R16 |
| * |
| * Read a 16 bit sample (correctly handles endianness) |
| */ |
| 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 endianness) |
| */ |
| 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--) |
| { |
| unsigned 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--) |
| { |
| unsigned 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 = 0x1; |
| add->wPid = 0x22; |
| add->vdwACM = 0x3320000; |
| add->vdwDriver = 0x04000000; |
| add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC; |
| add->cFormatTags = 2; /* PCM, IMA ADPCM */ |
| add->cFilterTags = 0; |
| add->hicon = NULL; |
| MultiByteToWideChar( CP_ACP, 0, "Microsoft IMA ADPCM", -1, |
| add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) ); |
| MultiByteToWideChar( CP_ACP, 0, "Microsoft IMA ADPCM CODEC", -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 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 %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_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 %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; |
| |
| /* 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; |
| } |
| |
| /* recompute other values */ |
| switch (adfs->pwfxDst->wFormatTag) |
| { |
| case WAVE_FORMAT_PCM: |
| if (adfs->cbwfxSrc < sizeof(IMAADPCMWAVEFORMAT)) return ACMERR_NOTPOSSIBLE; |
| 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_IMA_ADPCM: |
| if (adfs->cbwfxDst < sizeof(IMAADPCMWAVEFORMAT)) return ACMERR_NOTPOSSIBLE; |
| init_wfx_ima_adpcm((IMAADPCMWAVEFORMAT*)adfs->pwfxDst); |
| /* FIXME: not handling header overhead */ |
| TRACE("setting spb=%u\n", ((IMAADPCMWAVEFORMAT*)adfs->pwfxDst)->wSamplesPerBlock); |
| /* check if result is ok */ |
| if (ADPCM_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE; |
| break; |
| default: |
| return ACMERR_NOTPOSSIBLE; |
| } |
| |
| 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_PTR)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 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; |
| |
| /* 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 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; |
| |
| /* 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_StreamSize |
| * |
| */ |
| static LRESULT ADPCM_StreamSize(const ACMDRVSTREAMINSTANCE *adsi, PACMDRVSTREAMSIZE adss) |
| { |
| DWORD nblocks; |
| |
| switch (adss->fdwSize) |
| { |
| case ACM_STREAMSIZEF_DESTINATION: |
| /* cbDstLength => cbSrcLength */ |
| if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM && |
| adsi->pwfxDst->wFormatTag == WAVE_FORMAT_IMA_ADPCM) |
| { |
| nblocks = adss->cbDstLength / adsi->pwfxDst->nBlockAlign; |
| if (nblocks == 0) |
| return ACMERR_NOTPOSSIBLE; |
| adss->cbSrcLength = nblocks * adsi->pwfxSrc->nBlockAlign * ((IMAADPCMWAVEFORMAT*)adsi->pwfxDst)->wSamplesPerBlock; |
| } |
| else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_IMA_ADPCM && |
| adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM) |
| { |
| nblocks = adss->cbDstLength / (adsi->pwfxDst->nBlockAlign * ((IMAADPCMWAVEFORMAT*)adsi->pwfxSrc)->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_IMA_ADPCM) |
| { |
| nblocks = adss->cbSrcLength / (adsi->pwfxSrc->nBlockAlign * ((IMAADPCMWAVEFORMAT*)adsi->pwfxDst)->wSamplesPerBlock); |
| if (nblocks == 0) |
| return ACMERR_NOTPOSSIBLE; |
| if (adss->cbSrcLength % (adsi->pwfxSrc->nBlockAlign * ((IMAADPCMWAVEFORMAT*)adsi->pwfxDst)->wSamplesPerBlock)) |
| /* Round block count up. */ |
| nblocks++; |
| adss->cbDstLength = nblocks * adsi->pwfxDst->nBlockAlign; |
| } |
| else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_IMA_ADPCM && |
| adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM) |
| { |
| 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 * ((IMAADPCMWAVEFORMAT*)adsi->pwfxSrc)->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 1; |
| 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); |
| } |
| } |
