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980 lines
31 KiB
C
980 lines
31 KiB
C
/*
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* IMA ADPCM handling
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*
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* Copyright (C) 2001,2002 Eric Pouech
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#define WIN32_NO_STATUS
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#include <assert.h>
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#include <stdarg.h>
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//#include <string.h>
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#include <windef.h>
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#include <winbase.h>
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#include <wingdi.h>
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#include <winuser.h>
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#include <winnls.h>
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//#include "mmsystem.h"
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//#include "mmreg.h"
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//#include "msacm.h"
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#include <msacmdrv.h>
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#include <wine/debug.h>
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/* see http://www.pcisys.net/~melanson/codecs/adpcm.txt for the details */
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WINE_DEFAULT_DEBUG_CHANNEL(adpcm);
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/***********************************************************************
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* ADPCM_drvClose
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*/
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static LRESULT ADPCM_drvClose(DWORD_PTR dwDevID)
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{
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return 1;
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}
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typedef struct tagAcmAdpcmData
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{
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void (*convert)(PACMDRVSTREAMINSTANCE adsi,
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const unsigned char*, LPDWORD, unsigned char*, LPDWORD);
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/* IMA encoding only */
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BYTE stepIndexL;
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BYTE stepIndexR;
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/* short sample; */
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} AcmAdpcmData;
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/* table to list all supported formats... those are the basic ones. this
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* also helps given a unique index to each of the supported formats
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*/
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typedef struct
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{
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int nChannels;
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int nBits;
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int rate;
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} Format;
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static const Format PCM_Formats[] =
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{
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{1, 8, 8000}, {2, 8, 8000}, {1, 16, 8000}, {2, 16, 8000},
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{1, 8, 11025}, {2, 8, 11025}, {1, 16, 11025}, {2, 16, 11025},
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{1, 8, 22050}, {2, 8, 22050}, {1, 16, 22050}, {2, 16, 22050},
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{1, 8, 44100}, {2, 8, 44100}, {1, 16, 44100}, {2, 16, 44100},
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};
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static const Format ADPCM_Formats[] =
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{
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{1, 4, 8000}, {2, 4, 8000}, {1, 4, 11025}, {2, 4, 11025},
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{1, 4, 22050}, {2, 4, 22050}, {1, 4, 44100}, {2, 4, 44100},
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};
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#define NUM_PCM_FORMATS (sizeof(PCM_Formats) / sizeof(PCM_Formats[0]))
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#define NUM_ADPCM_FORMATS (sizeof(ADPCM_Formats) / sizeof(ADPCM_Formats[0]))
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/***********************************************************************
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* ADPCM_GetFormatIndex
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*/
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static DWORD ADPCM_GetFormatIndex(const WAVEFORMATEX *wfx)
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{
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int i, hi;
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const Format* fmts;
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switch (wfx->wFormatTag)
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{
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case WAVE_FORMAT_PCM:
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hi = NUM_PCM_FORMATS;
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fmts = PCM_Formats;
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break;
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case WAVE_FORMAT_IMA_ADPCM:
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hi = NUM_ADPCM_FORMATS;
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fmts = ADPCM_Formats;
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break;
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default:
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return 0xFFFFFFFF;
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}
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for (i = 0; i < hi; i++)
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{
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if (wfx->nChannels == fmts[i].nChannels &&
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wfx->nSamplesPerSec == fmts[i].rate &&
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wfx->wBitsPerSample == fmts[i].nBits)
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return i;
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}
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switch (wfx->wFormatTag)
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{
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case WAVE_FORMAT_PCM:
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if(3 > wfx->nChannels &&
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wfx->nChannels > 0 &&
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wfx->nAvgBytesPerSec == 2 * wfx->nSamplesPerSec * wfx->nChannels &&
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wfx->nBlockAlign == 2 * wfx->nChannels &&
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wfx->wBitsPerSample == 16)
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return hi;
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break;
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case WAVE_FORMAT_IMA_ADPCM:
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if(3 > wfx->nChannels &&
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wfx->nChannels > 0 &&
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wfx->wBitsPerSample == 4 &&
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wfx->cbSize == 2)
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return hi;
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break;
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}
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return 0xFFFFFFFF;
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}
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static void init_wfx_ima_adpcm(IMAADPCMWAVEFORMAT* awfx/*, DWORD nba*/)
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{
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register WAVEFORMATEX* pwfx = &awfx->wfx;
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/* we assume wFormatTag, nChannels, nSamplesPerSec and wBitsPerSample
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* have been initialized... */
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if (pwfx->wFormatTag != WAVE_FORMAT_IMA_ADPCM) {FIXME("wrong FT\n"); return;}
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if (ADPCM_GetFormatIndex(pwfx) == 0xFFFFFFFF) {FIXME("wrong fmt\n"); return;}
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switch (pwfx->nSamplesPerSec)
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{
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case 8000: pwfx->nBlockAlign = 256 * pwfx->nChannels; break;
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case 11025: pwfx->nBlockAlign = 256 * pwfx->nChannels; break;
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case 22050: pwfx->nBlockAlign = 512 * pwfx->nChannels; break;
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case 44100: pwfx->nBlockAlign = 1024 * pwfx->nChannels; break;
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default: /*pwfx->nBlockAlign = nba;*/ break;
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}
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pwfx->cbSize = sizeof(WORD);
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awfx->wSamplesPerBlock = (pwfx->nBlockAlign - (4 * pwfx->nChannels) * 2) / pwfx->nChannels + 1;
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pwfx->nAvgBytesPerSec = (pwfx->nSamplesPerSec * pwfx->nBlockAlign) / awfx->wSamplesPerBlock;
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}
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/***********************************************************************
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* R16
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*
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* Read a 16 bit sample (correctly handles endianness)
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*/
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static inline short R16(const unsigned char* src)
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{
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return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8));
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}
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/***********************************************************************
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* W16
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*
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* Write a 16 bit sample (correctly handles endianness)
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*/
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static inline void W16(unsigned char* dst, short s)
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{
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dst[0] = LOBYTE(s);
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dst[1] = HIBYTE(s);
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}
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/* IMA (or DVI) APDCM codec routines */
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static const unsigned IMA_StepTable[89] =
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{
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7, 8, 9, 10, 11, 12, 13, 14,
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16, 17, 19, 21, 23, 25, 28, 31,
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34, 37, 41, 45, 50, 55, 60, 66,
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73, 80, 88, 97, 107, 118, 130, 143,
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157, 173, 190, 209, 230, 253, 279, 307,
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337, 371, 408, 449, 494, 544, 598, 658,
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724, 796, 876, 963, 1060, 1166, 1282, 1411,
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1552, 1707, 1878, 2066, 2272, 2499, 2749, 3024,
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3327, 3660, 4026, 4428, 4871, 5358, 5894, 6484,
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7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
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15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794,
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32767
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};
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static const int IMA_IndexTable[16] =
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{
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-1, -1, -1, -1, 2, 4, 6, 8,
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-1, -1, -1, -1, 2, 4, 6, 8
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};
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static inline void clamp_step_index(int* stepIndex)
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{
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if (*stepIndex < 0 ) *stepIndex = 0;
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if (*stepIndex > 88) *stepIndex = 88;
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}
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static inline void clamp_sample(int* sample)
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{
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if (*sample < -32768) *sample = -32768;
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if (*sample > 32767) *sample = 32767;
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}
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static inline void process_nibble(unsigned char code, int* stepIndex, int* sample)
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{
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unsigned step;
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int diff;
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code &= 0x0F;
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step = IMA_StepTable[*stepIndex];
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diff = step >> 3;
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if (code & 1) diff += step >> 2;
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if (code & 2) diff += step >> 1;
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if (code & 4) diff += step;
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if (code & 8) *sample -= diff;
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else *sample += diff;
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clamp_sample(sample);
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*stepIndex += IMA_IndexTable[code];
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clamp_step_index(stepIndex);
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}
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static inline unsigned char generate_nibble(int in, int* stepIndex, int* sample)
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{
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int effdiff, diff = in - *sample;
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unsigned step;
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unsigned char code;
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if (diff < 0)
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{
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diff = -diff;
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code = 8;
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}
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else
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{
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code = 0;
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}
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step = IMA_StepTable[*stepIndex];
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effdiff = (step >> 3);
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if (diff >= step)
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{
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code |= 4;
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diff -= step;
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effdiff += step;
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}
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step >>= 1;
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if (diff >= step)
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{
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code |= 2;
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diff -= step;
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effdiff += step;
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}
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step >>= 1;
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if (diff >= step)
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{
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code |= 1;
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effdiff += step;
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}
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if (code & 8) *sample -= effdiff;
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else *sample += effdiff;
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clamp_sample(sample);
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*stepIndex += IMA_IndexTable[code];
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clamp_step_index(stepIndex);
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return code;
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}
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static void cvtSSima16K(PACMDRVSTREAMINSTANCE adsi,
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const unsigned char* src, LPDWORD nsrc,
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unsigned char* dst, LPDWORD ndst)
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{
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int i;
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int sampleL, sampleR;
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int stepIndexL, stepIndexR;
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int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxSrc)->wSamplesPerBlock;
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int nsamp;
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/* compute the number of entire blocks we can decode...
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* it's the min of the number of entire blocks in source buffer and the number
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* of entire blocks in destination buffer
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*/
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DWORD nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign,
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*ndst / (nsamp_blk * 2 * 2));
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*nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
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*ndst = nblock * (nsamp_blk * 2 * 2);
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nsamp_blk--; /* remove the sample in block header */
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for (; nblock > 0; nblock--)
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{
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const unsigned char* in_src = src;
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/* handle headers first */
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sampleL = R16(src);
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stepIndexL = (unsigned)*(src + 2);
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clamp_step_index(&stepIndexL);
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src += 4;
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W16(dst, sampleL); dst += 2;
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sampleR = R16(src);
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stepIndexR = (unsigned)*(src + 2);
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clamp_step_index(&stepIndexR);
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src += 4;
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W16(dst, sampleR); dst += 2;
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for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 8)
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{
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for (i = 0; i < 4; i++)
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{
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process_nibble(*src, &stepIndexL, &sampleL);
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W16(dst + (2 * i + 0) * 4 + 0, sampleL);
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process_nibble(*src++ >> 4, &stepIndexL, &sampleL);
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W16(dst + (2 * i + 1) * 4 + 0, sampleL);
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}
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for (i = 0; i < 4; i++)
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{
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process_nibble(*src , &stepIndexR, &sampleR);
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W16(dst + (2 * i + 0) * 4 + 2, sampleR);
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process_nibble(*src++ >>4, &stepIndexR, &sampleR);
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W16(dst + (2 * i + 1) * 4 + 2, sampleR);
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}
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dst += 32;
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}
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/* we have now to realign the source pointer on block */
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src = in_src + adsi->pwfxSrc->nBlockAlign;
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}
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}
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static void cvtMMima16K(PACMDRVSTREAMINSTANCE adsi,
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const unsigned char* src, LPDWORD nsrc,
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unsigned char* dst, LPDWORD ndst)
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{
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int sample;
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int stepIndex;
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int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxSrc)->wSamplesPerBlock;
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int nsamp;
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/* compute the number of entire blocks we can decode...
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* it's the min of the number of entire blocks in source buffer and the number
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* of entire blocks in destination buffer
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*/
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DWORD nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign,
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*ndst / (nsamp_blk * 2));
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*nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
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*ndst = nblock * nsamp_blk * 2;
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nsamp_blk--; /* remove the sample in block header */
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for (; nblock > 0; nblock--)
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{
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const unsigned char* in_src = src;
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/* handle header first */
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sample = R16(src);
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stepIndex = (unsigned)*(src + 2);
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clamp_step_index(&stepIndex);
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src += 4;
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W16(dst, sample); dst += 2;
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for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2)
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{
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process_nibble(*src, &stepIndex, &sample);
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W16(dst, sample); dst += 2;
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process_nibble(*src++ >> 4, &stepIndex, &sample);
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W16(dst, sample); dst += 2;
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}
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/* we have now to realign the source pointer on block */
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src = in_src + adsi->pwfxSrc->nBlockAlign;
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}
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}
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static void cvtSS16imaK(PACMDRVSTREAMINSTANCE adsi,
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const unsigned char* src, LPDWORD nsrc,
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unsigned char* dst, LPDWORD ndst)
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{
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int stepIndexL, stepIndexR;
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int sampleL, sampleR;
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BYTE code1, code2;
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int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxDst)->wSamplesPerBlock;
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int i, nsamp;
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/* compute the number of entire blocks we can decode...
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* it's the min of the number of entire blocks in source buffer and the number
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* of entire blocks in destination buffer
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*/
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DWORD nblock = min(*nsrc / (nsamp_blk * 2 * 2),
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*ndst / adsi->pwfxDst->nBlockAlign);
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*nsrc = nblock * (nsamp_blk * 2 * 2);
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*ndst = nblock * adsi->pwfxDst->nBlockAlign;
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stepIndexL = ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL;
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stepIndexR = ((AcmAdpcmData*)adsi->dwDriver)->stepIndexR;
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nsamp_blk--; /* so that we won't count the sample in header while filling the block */
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for (; nblock > 0; nblock--)
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{
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unsigned char* in_dst = dst;
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/* generate header */
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sampleL = R16(src); src += 2;
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W16(dst, sampleL); dst += 2;
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*dst = (unsigned char)(unsigned)stepIndexL;
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dst += 2;
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sampleR = R16(src); src += 2;
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W16(dst, sampleR); dst += 2;
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*dst = (unsigned char)(unsigned)stepIndexR;
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dst += 2;
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for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 8)
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{
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for (i = 0; i < 4; i++)
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{
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code1 = generate_nibble(R16(src + (2 * i + 0) * 2 + 0),
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&stepIndexL, &sampleL);
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code2 = generate_nibble(R16(src + (2 * i + 1) * 2 + 0),
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&stepIndexL, &sampleL);
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*dst++ = (code1 << 4) | code2;
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}
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for (i = 0; i < 4; i++)
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{
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code1 = generate_nibble(R16(src + (2 * i + 0) * 2 + 1),
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&stepIndexR, &sampleR);
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code2 = generate_nibble(R16(src + (2 * i + 1) * 2 + 1),
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&stepIndexR, &sampleR);
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*dst++ = (code1 << 4) | code2;
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}
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src += 32;
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}
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dst = in_dst + adsi->pwfxDst->nBlockAlign;
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}
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((AcmAdpcmData*)adsi->dwDriver)->stepIndexL = stepIndexL;
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((AcmAdpcmData*)adsi->dwDriver)->stepIndexR = stepIndexR;
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}
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static void cvtMM16imaK(PACMDRVSTREAMINSTANCE adsi,
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const unsigned char* src, LPDWORD nsrc,
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unsigned char* dst, LPDWORD ndst)
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{
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int stepIndex;
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int sample;
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BYTE code1, code2;
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int nsamp_blk = ((LPIMAADPCMWAVEFORMAT)adsi->pwfxDst)->wSamplesPerBlock;
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int nsamp;
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/* compute the number of entire blocks we can decode...
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* it's the min of the number of entire blocks in source buffer and the number
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* of entire blocks in destination buffer
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*/
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DWORD nblock = min(*nsrc / (nsamp_blk * 2),
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*ndst / adsi->pwfxDst->nBlockAlign);
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*nsrc = nblock * (nsamp_blk * 2);
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*ndst = nblock * adsi->pwfxDst->nBlockAlign;
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stepIndex = ((AcmAdpcmData*)adsi->dwDriver)->stepIndexL;
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nsamp_blk--; /* so that we won't count the sample in header while filling the block */
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for (; nblock > 0; nblock--)
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{
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unsigned char* in_dst = dst;
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/* generate header */
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/* FIXME: what about the last effective sample from previous block ??? */
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/* perhaps something like:
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* sample += R16(src);
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* clamp_sample(sample);
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* and with :
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* + saving the sample in adsi->dwDriver when all blocks are done
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+ + reset should set the field in adsi->dwDriver to 0 too
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*/
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sample = R16(src); src += 2;
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W16(dst, sample); dst += 2;
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*dst = (unsigned char)(unsigned)stepIndex;
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dst += 2;
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for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2)
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{
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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);
|
|
}
|
|
}
|