git.oblomov.eu Git - wine/blob - dlls/winemp3.acm/mpegl3.c

   1 /*
   2  * MPEG Layer 3 handling
   3  *
   4  *      Copyright (C) 2002              Eric Pouech
   5  *
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <assert.h>
  23 #include <stdarg.h>
  24 #include <string.h>
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28 #include "winuser.h"
  29 #include "winnls.h"
  30 #include "mmsystem.h"
  31 #include "mmreg.h"
  32 #include "msacm.h"
  33 #include "msacmdrv.h"
  34 #include "mpg123.h"
  35 #include "mpglib.h"
  36
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(mpeg3);
  40
  41 /***********************************************************************
  42  *           MPEG3_drvOpen
  43  */
  44 static LRESULT MPEG3_drvOpen(LPCSTR str)
  45 {
  46     return 1;
  47 }
  48
  49 /***********************************************************************
  50  *           MPEG3_drvClose
  51  */
  52 static LRESULT MPEG3_drvClose(DWORD_PTR dwDevID)
  53 {
  54     return 1;
  55 }
  56
  57 typedef struct tagAcmMpeg3Data
  58 {
  59     void (*convert)(PACMDRVSTREAMINSTANCE adsi,
  60                     const unsigned char*, LPDWORD, unsigned char*, LPDWORD);
  61     struct mpstr mp;
  62 } AcmMpeg3Data;
  63
  64 /* table to list all supported formats... those are the basic ones. this
  65  * also helps given a unique index to each of the supported formats
  66  */
  67 typedef struct
  68 {
  69     int         nChannels;
  70     int         nBits;
  71     int         rate;
  72 } Format;
  73
  74 static Format PCM_Formats[] =
  75 {
  76     {1,  8,  8000}, {2,  8,  8000}, {1, 16,  8000}, {2, 16,  8000},
  77     {1,  8, 11025}, {2,  8, 11025}, {1, 16, 11025}, {2, 16, 11025},
  78     {1,  8, 22050}, {2,  8, 22050}, {1, 16, 22050}, {2, 16, 22050},
  79     {1,  8, 44100}, {2,  8, 44100}, {1, 16, 44100}, {2, 16, 44100},
  80 };
  81
  82 static Format MPEG3_Formats[] =
  83 {
  84     {1,  0,  8000}, {2, 0,  8000},  {1,  0, 11025}, {2,  0, 11025},
  85     {1,  0, 22050}, {2, 0, 22050},  {1,  0, 44100}, {2,  0, 44100},
  86 };
  87
  88 #define NUM_PCM_FORMATS         (sizeof(PCM_Formats) / sizeof(PCM_Formats[0]))
  89 #define NUM_MPEG3_FORMATS       (sizeof(MPEG3_Formats) / sizeof(MPEG3_Formats[0]))
  90
  91 /***********************************************************************
  92  *           MPEG3_GetFormatIndex
  93  */
  94 static  DWORD   MPEG3_GetFormatIndex(LPWAVEFORMATEX wfx)
  95 {
  96     int         i, hi;
  97     Format*     fmts;
  98
  99     switch (wfx->wFormatTag)
 100     {
 101     case WAVE_FORMAT_PCM:
 102         hi = NUM_PCM_FORMATS;
 103         fmts = PCM_Formats;
 104         break;
 105     case WAVE_FORMAT_MPEGLAYER3:
 106         hi = NUM_MPEG3_FORMATS;
 107         fmts = MPEG3_Formats;
 108         break;
 109     default:
 110         return 0xFFFFFFFF;
 111     }
 112
 113     for (i = 0; i < hi; i++)
 114     {
 115         if (wfx->nChannels == fmts[i].nChannels &&
 116             wfx->nSamplesPerSec == fmts[i].rate &&
 117             wfx->wBitsPerSample == fmts[i].nBits)
 118             return i;
 119     }
 120
 121     return 0xFFFFFFFF;
 122 }
 123
 124 /***********************************************************************
 125  *           R16
 126  *
 127  * Read a 16 bit sample (correctly handles endianess)
 128  */
 129 static inline short  R16(const unsigned char* src)
 130 {
 131     return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8));
 132 }
 133
 134 /***********************************************************************
 135  *           W16
 136  *
 137  * Write a 16 bit sample (correctly handles endianess)
 138  */
 139 static inline void  W16(unsigned char* dst, short s)
 140 {
 141     dst[0] = LOBYTE(s);
 142     dst[1] = HIBYTE(s);
 143 }
 144
 145 static DWORD get_num_buffered_bytes(struct mpstr *mp)
 146 {
 147     DWORD numBuff = 0;
 148     struct buf * p = mp->tail;
 149     while (p) {
 150         numBuff += p->size - p->pos;
 151         p = p->next;
 152     }
 153     return numBuff;
 154 }
 155
 156 static void mp3_horse(PACMDRVSTREAMINSTANCE adsi,
 157                       const unsigned char* src, LPDWORD nsrc,
 158                       unsigned char* dst, LPDWORD ndst)
 159 {
 160     AcmMpeg3Data*       amd = (AcmMpeg3Data*)adsi->dwDriver;
 161     int                 size, ret;
 162     DWORD               dpos = 0;
 163     DWORD               buffered_before;
 164     DWORD               buffered_during;
 165     DWORD               buffered_after;
 166
 167     buffered_before = get_num_buffered_bytes(&amd->mp);
 168     ret = decodeMP3(&amd->mp, src, *nsrc, dst, *ndst, &size);
 169     buffered_during = get_num_buffered_bytes(&amd->mp);
 170     if (ret != MP3_OK)
 171     {
 172         *ndst = *nsrc = 0;
 173         return;
 174     }
 175     do {
 176         dpos += size;
 177         if (*ndst - dpos < 4608) break;
 178         ret = decodeMP3(&amd->mp, NULL, 0,
 179                         dst + dpos, *ndst - dpos, &size);
 180     } while (ret == MP3_OK);
 181     *ndst = dpos;
 182
 183     buffered_after = get_num_buffered_bytes(&amd->mp);
 184     TRACE("before %ld put %ld during %ld after %ld\n", buffered_before, *nsrc, buffered_during, buffered_after);
 185 }
 186
 187 /***********************************************************************
 188  *           MPEG3_DriverDetails
 189  *
 190  */
 191 static  LRESULT MPEG3_DriverDetails(PACMDRIVERDETAILSW add)
 192 {
 193     add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
 194     add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
 195     add->wMid = 0xFF;
 196     add->wPid = 0x00;
 197     add->vdwACM = 0x01000000;
 198     add->vdwDriver = 0x01000000;
 199     add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
 200     add->cFormatTags = 2; /* PCM, MPEG3 */
 201     add->cFilterTags = 0;
 202     add->hicon = NULL;
 203     MultiByteToWideChar( CP_ACP, 0, "WINE-MPEG3", -1,
 204                          add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) );
 205     MultiByteToWideChar( CP_ACP, 0, "Wine MPEG3 decoder", -1,
 206                          add->szLongName, sizeof(add->szLongName)/sizeof(WCHAR) );
 207     MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team (based on mpglib by Michael Hipp)...", -1,
 208                          add->szCopyright, sizeof(add->szCopyright)/sizeof(WCHAR) );
 209     MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
 210                          add->szLicensing, sizeof(add->szLicensing)/sizeof(WCHAR) );
 211     add->szFeatures[0] = 0;
 212
 213     return MMSYSERR_NOERROR;
 214 }
 215
 216 /***********************************************************************
 217  *           MPEG3_FormatTagDetails
 218  *
 219  */
 220 static  LRESULT MPEG3_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
 221 {
 222     static const WCHAR szPcm[]={'P','C','M',0};
 223     static const WCHAR szMpeg3[]={'M','P','e','g','3',0};
 224
 225     switch (dwQuery)
 226     {
 227     case ACM_FORMATTAGDETAILSF_INDEX:
 228         if (aftd->dwFormatTagIndex >= 2) return ACMERR_NOTPOSSIBLE;
 229         break;
 230     case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
 231         if (aftd->dwFormatTag == WAVE_FORMAT_UNKNOWN)
 232         {
 233             aftd->dwFormatTagIndex = 1; /* WAVE_FORMAT_MPEGLAYER3 is bigger than PCM */
 234             break;
 235         }
 236         /* fall thru */
 237     case ACM_FORMATTAGDETAILSF_FORMATTAG:
 238         switch (aftd->dwFormatTag)
 239         {
 240         case WAVE_FORMAT_PCM:           aftd->dwFormatTagIndex = 0; break;
 241         case WAVE_FORMAT_MPEGLAYER3:    aftd->dwFormatTagIndex = 1; break;
 242         default:                        return ACMERR_NOTPOSSIBLE;
 243         }
 244         break;
 245     default:
 246         WARN("Unsupported query %08lx\n", dwQuery);
 247         return MMSYSERR_NOTSUPPORTED;
 248     }
 249
 250     aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
 251     switch (aftd->dwFormatTagIndex)
 252     {
 253     case 0:
 254         aftd->dwFormatTag = WAVE_FORMAT_PCM;
 255         aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
 256         aftd->cStandardFormats = NUM_PCM_FORMATS;
 257         lstrcpyW(aftd->szFormatTag, szPcm);
 258         break;
 259     case 1:
 260         aftd->dwFormatTag = WAVE_FORMAT_MPEGLAYER3;
 261         aftd->cbFormatSize = sizeof(MPEGLAYER3WAVEFORMAT);
 262         aftd->cStandardFormats = NUM_MPEG3_FORMATS;
 263         lstrcpyW(aftd->szFormatTag, szMpeg3);
 264         break;
 265     }
 266     return MMSYSERR_NOERROR;
 267 }
 268
 269 static void fill_in_wfx(unsigned cbwfx, WAVEFORMATEX* wfx, unsigned bit_rate)
 270 {
 271     MPEGLAYER3WAVEFORMAT*   mp3wfx = (MPEGLAYER3WAVEFORMAT*)wfx;
 272
 273     wfx->nAvgBytesPerSec = bit_rate / 8;
 274     if (cbwfx >= sizeof(WAVEFORMATEX))
 275         wfx->cbSize = sizeof(MPEGLAYER3WAVEFORMAT) - sizeof(WAVEFORMATEX);
 276     if (cbwfx >= sizeof(MPEGLAYER3WAVEFORMAT))
 277     {
 278         mp3wfx->wID = MPEGLAYER3_ID_MPEG;
 279         mp3wfx->fdwFlags = MPEGLAYER3_FLAG_PADDING_OFF;
 280         mp3wfx->nBlockSize = (bit_rate * 144) / wfx->nSamplesPerSec;
 281         mp3wfx->nFramesPerBlock = 1;
 282         mp3wfx->nCodecDelay = 0x0571;
 283     }
 284 }
 285
 286 /***********************************************************************
 287  *           MPEG3_FormatDetails
 288  *
 289  */
 290 static  LRESULT MPEG3_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
 291 {
 292     switch (dwQuery)
 293     {
 294     case ACM_FORMATDETAILSF_FORMAT:
 295         if (MPEG3_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
 296         break;
 297     case ACM_FORMATDETAILSF_INDEX:
 298         afd->pwfx->wFormatTag = afd->dwFormatTag;
 299         switch (afd->dwFormatTag)
 300         {
 301         case WAVE_FORMAT_PCM:
 302             if (afd->dwFormatIndex >= NUM_PCM_FORMATS) return ACMERR_NOTPOSSIBLE;
 303             afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
 304             afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
 305             afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
 306             /* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not accessible
 307              * afd->pwfx->cbSize = 0;
 308              */
 309             afd->pwfx->nBlockAlign =
 310                 (afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
 311             afd->pwfx->nAvgBytesPerSec =
 312                 afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
 313             break;
 314         case WAVE_FORMAT_MPEGLAYER3:
 315             if (afd->dwFormatIndex >= NUM_MPEG3_FORMATS) return ACMERR_NOTPOSSIBLE;
 316             afd->pwfx->nChannels = MPEG3_Formats[afd->dwFormatIndex].nChannels;
 317             afd->pwfx->nSamplesPerSec = MPEG3_Formats[afd->dwFormatIndex].rate;
 318             afd->pwfx->wBitsPerSample = MPEG3_Formats[afd->dwFormatIndex].nBits;
 319             afd->pwfx->nBlockAlign = 1;
 320             fill_in_wfx(afd->cbwfx, afd->pwfx, 192000);
 321             break;
 322         default:
 323             WARN("Unsupported tag %08lx\n", afd->dwFormatTag);
 324             return MMSYSERR_INVALPARAM;
 325         }
 326         break;
 327     default:
 328         WARN("Unsupported query %08lx\n", dwQuery);
 329         return MMSYSERR_NOTSUPPORTED;
 330     }
 331     afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
 332     afd->szFormat[0] = 0; /* let MSACM format this for us... */
 333
 334     return MMSYSERR_NOERROR;
 335 }
 336
 337 /***********************************************************************
 338  *           MPEG3_FormatSuggest
 339  *
 340  */
 341 static  LRESULT MPEG3_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
 342 {
 343     /* some tests ... */
 344     if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
 345         adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
 346         MPEG3_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
 347     /* FIXME: should do those tests against the real size (according to format tag */
 348
 349     /* If no suggestion for destination, then copy source value */
 350     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS))
 351         adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
 352     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC))
 353         adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
 354
 355     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE))
 356     {
 357         if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
 358             adfs->pwfxDst->wBitsPerSample = 4;
 359         else
 360             adfs->pwfxDst->wBitsPerSample = 16;
 361     }
 362     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
 363     {
 364         if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
 365             adfs->pwfxDst->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
 366         else
 367             adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM;
 368     }
 369
 370     /* check if result is ok */
 371     if (MPEG3_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
 372
 373     /* recompute other values */
 374     switch (adfs->pwfxDst->wFormatTag)
 375     {
 376     case WAVE_FORMAT_PCM:
 377         adfs->pwfxDst->nBlockAlign = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
 378         adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
 379         break;
 380     case WAVE_FORMAT_MPEGLAYER3:
 381         adfs->pwfxDst->nBlockAlign = 1;
 382         fill_in_wfx(adfs->cbwfxDst, adfs->pwfxDst, 192000);
 383         break;
 384     default:
 385         FIXME("\n");
 386         break;
 387     }
 388
 389     return MMSYSERR_NOERROR;
 390 }
 391
 392 /***********************************************************************
 393  *           MPEG3_Reset
 394  *
 395  */
 396 static  void    MPEG3_Reset(PACMDRVSTREAMINSTANCE adsi, AcmMpeg3Data* aad)
 397 {
 398 }
 399
 400 /***********************************************************************
 401  *           MPEG3_StreamOpen
 402  *
 403  */
 404 static  LRESULT MPEG3_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
 405 {
 406     AcmMpeg3Data*       aad;
 407
 408     assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC));
 409
 410     if (MPEG3_GetFormatIndex(adsi->pwfxSrc) == 0xFFFFFFFF ||
 411         MPEG3_GetFormatIndex(adsi->pwfxDst) == 0xFFFFFFFF)
 412         return ACMERR_NOTPOSSIBLE;
 413
 414     aad = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmMpeg3Data));
 415     if (aad == 0) return MMSYSERR_NOMEM;
 416
 417     adsi->dwDriver = (DWORD)aad;
 418
 419     if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
 420         adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
 421     {
 422         goto theEnd;
 423     }
 424     else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
 425              adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
 426     {
 427         /* resampling or mono <=> stereo not available
 428          * MPEG3 algo only define 16 bit per sample output
 429          */
 430         if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
 431             adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
 432             adsi->pwfxDst->wBitsPerSample != 16)
 433             goto theEnd;
 434         aad->convert = mp3_horse;
 435         InitMP3(&aad->mp);
 436     }
 437     /* no encoding yet
 438     else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
 439              adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
 440     */
 441     else goto theEnd;
 442     MPEG3_Reset(adsi, aad);
 443
 444     return MMSYSERR_NOERROR;
 445
 446  theEnd:
 447     HeapFree(GetProcessHeap(), 0, aad);
 448     adsi->dwDriver = 0L;
 449     return MMSYSERR_NOTSUPPORTED;
 450 }
 451
 452 /***********************************************************************
 453  *           MPEG3_StreamClose
 454  *
 455  */
 456 static  LRESULT MPEG3_StreamClose(PACMDRVSTREAMINSTANCE adsi)
 457 {
 458     ExitMP3(&((AcmMpeg3Data*)adsi->dwDriver)->mp);
 459     HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
 460     return MMSYSERR_NOERROR;
 461 }
 462
 463 /***********************************************************************
 464  *           MPEG3_round
 465  *
 466  */
 467 static  inline DWORD    MPEG3_round(DWORD a, DWORD b, DWORD c)
 468 {
 469     assert(a && b && c);
 470     /* to be sure, always return an entire number of c... */
 471     return ((double)a * (double)b + (double)c - 1) / (double)c;
 472 }
 473
 474 /***********************************************************************
 475  *           MPEG3_StreamSize
 476  *
 477  */
 478 static  LRESULT MPEG3_StreamSize(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMSIZE adss)
 479 {
 480     switch (adss->fdwSize)
 481     {
 482     case ACM_STREAMSIZEF_DESTINATION:
 483         /* cbDstLength => cbSrcLength */
 484         if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
 485             adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
 486         {
 487             /* don't take block overhead into account, doesn't matter too much */
 488             adss->cbSrcLength = adss->cbDstLength * 12;
 489         }
 490         else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
 491                  adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
 492         {
 493             FIXME("misses the block header overhead\n");
 494             adss->cbSrcLength = 256 + adss->cbDstLength / 12;
 495         }
 496         else
 497         {
 498             return MMSYSERR_NOTSUPPORTED;
 499         }
 500         break;
 501     case ACM_STREAMSIZEF_SOURCE:
 502         /* cbSrcLength => cbDstLength */
 503         if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
 504             adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
 505         {
 506             FIXME("misses the block header overhead\n");
 507             adss->cbDstLength = 256 + adss->cbSrcLength / 12;
 508         }
 509         else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
 510                  adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
 511         {
 512             /* don't take block overhead into account, doesn't matter too much */
 513             adss->cbDstLength = adss->cbSrcLength * 12;
 514         }
 515         else
 516         {
 517             return MMSYSERR_NOTSUPPORTED;
 518         }
 519         break;
 520     default:
 521         WARN("Unsupported query %08lx\n", adss->fdwSize);
 522         return MMSYSERR_NOTSUPPORTED;
 523     }
 524     return MMSYSERR_NOERROR;
 525 }
 526
 527 /***********************************************************************
 528  *           MPEG3_StreamConvert
 529  *
 530  */
 531 static LRESULT MPEG3_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
 532 {
 533     AcmMpeg3Data*       aad = (AcmMpeg3Data*)adsi->dwDriver;
 534     DWORD               nsrc = adsh->cbSrcLength;
 535     DWORD               ndst = adsh->cbDstLength;
 536
 537     if (adsh->fdwConvert &
 538         ~(ACM_STREAMCONVERTF_BLOCKALIGN|
 539           ACM_STREAMCONVERTF_END|
 540           ACM_STREAMCONVERTF_START))
 541     {
 542         FIXME("Unsupported fdwConvert (%08lx), ignoring it\n", adsh->fdwConvert);
 543     }
 544     /* ACM_STREAMCONVERTF_BLOCKALIGN
 545      *  currently all conversions are block aligned, so do nothing for this flag
 546      * ACM_STREAMCONVERTF_END
 547      *  no pending data, so do nothing for this flag
 548      */
 549     if ((adsh->fdwConvert & ACM_STREAMCONVERTF_START))
 550     {
 551         MPEG3_Reset(adsi, aad);
 552     }
 553
 554     aad->convert(adsi, adsh->pbSrc, &nsrc, adsh->pbDst, &ndst);
 555     adsh->cbSrcLengthUsed = nsrc;
 556     adsh->cbDstLengthUsed = ndst;
 557
 558     return MMSYSERR_NOERROR;
 559 }
 560
 561 /**************************************************************************
 562  *                      MPEG3_DriverProc                        [exported]
 563  */
 564 LRESULT CALLBACK MPEG3_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
 565                                          LPARAM dwParam1, LPARAM dwParam2)
 566 {
 567     TRACE("(%08lx %p %04x %08lx %08lx);\n",
 568           dwDevID, hDriv, wMsg, dwParam1, dwParam2);
 569
 570     switch (wMsg)
 571     {
 572     case DRV_LOAD:              return 1;
 573     case DRV_FREE:              return 1;
 574     case DRV_OPEN:              return MPEG3_drvOpen((LPSTR)dwParam1);
 575     case DRV_CLOSE:             return MPEG3_drvClose(dwDevID);
 576     case DRV_ENABLE:            return 1;
 577     case DRV_DISABLE:           return 1;
 578     case DRV_QUERYCONFIGURE:    return 1;
 579     case DRV_CONFIGURE:         MessageBoxA(0, "MPEG3 filter !", "Wine Driver", MB_OK); return 1;
 580     case DRV_INSTALL:           return DRVCNF_RESTART;
 581     case DRV_REMOVE:            return DRVCNF_RESTART;
 582
 583     case ACMDM_DRIVER_NOTIFY:
 584         /* no caching from other ACM drivers is done so far */
 585         return MMSYSERR_NOERROR;
 586
 587     case ACMDM_DRIVER_DETAILS:
 588         return MPEG3_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
 589
 590     case ACMDM_FORMATTAG_DETAILS:
 591         return MPEG3_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
 592
 593     case ACMDM_FORMAT_DETAILS:
 594         return MPEG3_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
 595
 596     case ACMDM_FORMAT_SUGGEST:
 597         return MPEG3_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
 598
 599     case ACMDM_STREAM_OPEN:
 600         return MPEG3_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
 601
 602     case ACMDM_STREAM_CLOSE:
 603         return MPEG3_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
 604
 605     case ACMDM_STREAM_SIZE:
 606         return MPEG3_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
 607
 608     case ACMDM_STREAM_CONVERT:
 609         return MPEG3_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
 610
 611     case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
 612     case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
 613         /* this converter is not a hardware driver */
 614     case ACMDM_FILTERTAG_DETAILS:
 615     case ACMDM_FILTER_DETAILS:
 616         /* this converter is not a filter */
 617     case ACMDM_STREAM_RESET:
 618         /* only needed for asynchronous driver... we aren't, so just say it */
 619         return MMSYSERR_NOTSUPPORTED;
 620     case ACMDM_STREAM_PREPARE:
 621     case ACMDM_STREAM_UNPREPARE:
 622         /* nothing special to do here... so don't do anything */
 623         return MMSYSERR_NOERROR;
 624
 625     default:
 626         return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
 627     }
 628 }