dlls/msacm32/pcmconverter.c

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2
   3 /*
   4  *      MSACM32 library
   5  *
   6  *      Copyright 2000          Eric Pouech
   7  *      Copyright 2004          Robert Reif
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  *
  23  *      FIXME / TODO list
  24  *      + get rid of hack for PCM_DriverProc (msacm32.dll shouldn't export
  25  *        a DriverProc, but this would require implementing a generic
  26  *        embedded driver handling scheme in msacm32.dll which isn't done yet
  27  */
  28
  29
  30 #include <assert.h>
  31 #include <stdarg.h>
  32 #include <string.h>
  33
  34 #include "windef.h"
  35 #include "winbase.h"
  36 #include "mmsystem.h"
  37 #define NOBITMAP
  38 #include "mmreg.h"
  39 #include "msacm.h"
  40 #include "wingdi.h"
  41 #include "winnls.h"
  42 #include "winuser.h"
  43
  44 #include "msacmdrv.h"
  45 #include "wineacm.h"
  46
  47 #include "wine/debug.h"
  48
  49 WINE_DEFAULT_DEBUG_CHANNEL(msacm);
  50
  51 /***********************************************************************
  52  *           PCM_drvOpen
  53  */
  54 static  DWORD   PCM_drvOpen(LPCSTR str, PACMDRVOPENDESCW adod)
  55 {
  56     TRACE("(%p, %p)\n", str, adod);
  57
  58     return (adod == NULL) ||
  59         (adod->fccType == ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC &&
  60          adod->fccComp == ACMDRIVERDETAILS_FCCCOMP_UNDEFINED);
  61 }
  62
  63 /***********************************************************************
  64  *           PCM_drvClose
  65  */
  66 static  DWORD   PCM_drvClose(DWORD dwDevID)
  67 {
  68     TRACE("(%d)\n", dwDevID);
  69
  70     return 1;
  71 }
  72
  73 #define NUM_OF(a,b)     ((a)/(b))
  74
  75 /* flags for fdwDriver */
  76 #define PCM_RESAMPLE    1
  77
  78 typedef void (*PCM_CONVERT_KEEP_RATE)(const unsigned char*, int, unsigned char*);
  79
  80 typedef void (*PCM_CONVERT_CHANGE_RATE)(const DWORD, const unsigned char*, DWORD*, const DWORD, unsigned char*, DWORD*);
  81
  82 /* data used while converting */
  83 typedef struct tagAcmPcmData {
  84     /* conversion routine, depending if rate conversion is required */
  85     union {
  86         PCM_CONVERT_KEEP_RATE cvtKeepRate;
  87         PCM_CONVERT_CHANGE_RATE cvtChangeRate;
  88     } cvt;
  89 } AcmPcmData;
  90
  91 /* table to list all supported formats... those are the basic ones. this
  92  * also helps given a unique index to each of the supported formats
  93  */
  94 static const struct {
  95     int         nChannels;
  96     int         nBits;
  97     int         rate;
  98 } PCM_Formats[] = {
  99     {1,  8,  8000}, {2,  8,  8000}, {1, 16,  8000}, {2, 16,  8000}, {1, 24,  8000}, {2, 24,  8000},
 100     {1,  8, 11025}, {2,  8, 11025}, {1, 16, 11025}, {2, 16, 11025}, {1, 24, 11025}, {2, 24, 11025},
 101     {1,  8, 22050}, {2,  8, 22050}, {1, 16, 22050}, {2, 16, 22050}, {1, 24, 22050}, {2, 24, 22050},
 102     {1,  8, 44100}, {2,  8, 44100}, {1, 16, 44100}, {2, 16, 44100}, {1, 24, 44100}, {2, 24, 44100},
 103     {1,  8, 48000}, {2,  8, 48000}, {1, 16, 48000}, {2, 16, 48000}, {1, 24, 48000}, {2, 24, 48000},
 104     {1,  8, 96000}, {2,  8, 96000}, {1, 16, 96000}, {2, 16, 96000}, {1, 24, 96000}, {2, 24, 96000},
 105 };
 106
 107 /***********************************************************************
 108  *           PCM_GetFormatIndex
 109  */
 110 static DWORD PCM_GetFormatIndex(LPWAVEFORMATEX wfx)
 111 {
 112     unsigned int i;
 113     TRACE("(%p)\n", wfx);
 114
 115     for (i = 0; i < ARRAY_SIZE(PCM_Formats); i++) {
 116         if (wfx->nChannels == PCM_Formats[i].nChannels &&
 117             wfx->nSamplesPerSec == PCM_Formats[i].rate &&
 118             wfx->wBitsPerSample == PCM_Formats[i].nBits)
 119             return i;
 120     }
 121     return 0xFFFFFFFF;
 122 }
 123
 124 /* PCM Conversions:
 125  *
 126  * parameters:
 127  *      + 8 bit unsigned vs 16 bit signed
 128  *      + mono vs stereo (1 or 2 channels)
 129  *      + sampling rate (8.0, 11.025, 22.05, 44.1 kHz are defined, but algo
 130  *        shall work in all cases)
 131  *
 132  * mono => stereo: copy the same sample on Left & Right channels
 133  * stereo => mono: use the sum of Left & Right channels
 134  */
 135
 136 /***********************************************************************
 137  *           C816
 138  *
 139  * Converts a 8 bit sample to a 16 bit one
 140  */
 141 static inline short C816(unsigned char b)
 142 {
 143     return (b - 128) << 8;
 144 }
 145
 146 /***********************************************************************
 147  *           C168
 148  *
 149  * Converts a 16 bit sample to a 8 bit one (data loss !!)
 150  */
 151 static inline unsigned char C168(short s)
 152 {
 153     return HIBYTE(s) ^ (unsigned char)0x80;
 154 }
 155
 156 /***********************************************************************
 157  *           C248
 158  *
 159  * Converts a 24 bit sample to a 8 bit one (data loss !!)
 160  */
 161 static inline unsigned char C248(int s)
 162 {
 163     return HIBYTE(HIWORD(s)) ^ (unsigned char)0x80;
 164 }
 165
 166 /***********************************************************************
 167  *           C2416
 168  *
 169  * Converts a 24 bit sample to a 16 bit one (data loss !!)
 170  */
 171 static inline short C2416(int s)
 172 {
 173     return HIWORD(s);
 174 }
 175
 176 /***********************************************************************
 177  *           R16
 178  *
 179  * Read a 16 bit sample (correctly handles endianness)
 180  */
 181 static inline short  R16(const unsigned char* src)
 182 {
 183     return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8));
 184 }
 185
 186 /***********************************************************************
 187  *           R24
 188  *
 189  * Read a 24 bit sample (correctly handles endianness)
 190  * Note, to support signed arithmetic, the values are shifted high in the int
 191  * and low 8 bytes are unused.
 192  */
 193 static inline int R24(const unsigned char* src)
 194 {
 195     return ((int)src[0] | (int)src[1] << 8 | (int)src[2] << 16) << 8;
 196 }
 197
 198 /***********************************************************************
 199  *           W16
 200  *
 201  * Write a 16 bit sample (correctly handles endianness)
 202  */
 203 static inline void  W16(unsigned char* dst, short s)
 204 {
 205     dst[0] = LOBYTE(s);
 206     dst[1] = HIBYTE(s);
 207 }
 208
 209 /***********************************************************************
 210  *           W24
 211  *
 212  * Write a 24 bit sample (correctly handles endianness)
 213  */
 214 static inline void  W24(unsigned char* dst, int s)
 215 {
 216     dst[0] = HIBYTE(LOWORD(s));
 217     dst[1] = LOBYTE(HIWORD(s));
 218     dst[2] = HIBYTE(HIWORD(s));
 219 }
 220
 221 /***********************************************************************
 222  *           M24
 223  *
 224  * Convert the (l,r) 24 bit stereo sample into a 24 bit mono
 225  * (takes the sum of the two values)
 226  */
 227 static inline int M24(int l, int r)
 228 {
 229     LONGLONG sum = l + r;
 230
 231     /* clip sum to saturation */
 232     if (sum > 0x7fffff00)
 233         sum = 0x7fffff00;
 234     else if (sum < -0x7fffff00)
 235         sum = -0x7fffff00;
 236
 237     return sum;
 238 }
 239
 240 /***********************************************************************
 241  *           M16
 242  *
 243  * Convert the (l,r) 16 bit stereo sample into a 16 bit mono
 244  * (takes the sum of the two values)
 245  */
 246 static inline short M16(short l, short r)
 247 {
 248     int sum = l + r;
 249
 250     /* clip sum to saturation */
 251     if (sum > 32767)
 252         sum = 32767;
 253     else if (sum < -32768)
 254         sum = -32768;
 255
 256     return sum;
 257 }
 258
 259 /***********************************************************************
 260  *           M8
 261  *
 262  * Convert the (l,r) 8 bit stereo sample into a 8 bit mono
 263  * (takes the sum of the two values)
 264  */
 265 static inline unsigned char M8(unsigned char a, unsigned char b)
 266 {
 267     int l = a - 128;
 268     int r = b - 128;
 269     int sum = (l + r) + 128;
 270
 271     /* clip sum to saturation */
 272     if (sum > 0xff)
 273         sum = 0xff;
 274     else if (sum < 0)
 275         sum = 0;
 276
 277     return sum;
 278 }
 279
 280 /* the conversion routines without rate conversion are labelled cvt<X><Y><N><M>K
 281  * where :
 282  * <X> is the (M)ono/(S)tereo configuration of  input channel
 283  * <Y> is the (M)ono/(S)tereo configuration of output channel
 284  * <N> is the number of bits of  input channel (8 or 16)
 285  * <M> is the number of bits of output channel (8 or 16)
 286  *
 287  * in the parameters, ns is always the number of samples, so the size of input
 288  * buffer (resp output buffer) is ns * (<X> == 'Mono' ? 1:2) * (<N> == 8 ? 1:2)
 289  */
 290
 291 static  void cvtMM88K(const unsigned char* src, int ns, unsigned char* dst)
 292 {
 293     TRACE("(%p, %d, %p)\n", src, ns, dst);
 294     memcpy(dst, src, ns);
 295 }
 296
 297 static  void cvtSS88K(const unsigned char* src, int ns, unsigned char* dst)
 298 {
 299     TRACE("(%p, %d, %p)\n", src, ns, dst);
 300     memcpy(dst, src, ns * 2);
 301 }
 302
 303 static  void cvtMM1616K(const unsigned char* src, int ns, unsigned char* dst)
 304 {
 305     TRACE("(%p, %d, %p)\n", src, ns, dst);
 306     memcpy(dst, src, ns * 2);
 307 }
 308
 309 static  void cvtSS1616K(const unsigned char* src, int ns, unsigned char* dst)
 310 {
 311     TRACE("(%p, %d, %p)\n", src, ns, dst);
 312     memcpy(dst, src, ns * 4);
 313 }
 314
 315 static  void cvtMS88K(const unsigned char* src, int ns, unsigned char* dst)
 316 {
 317     TRACE("(%p, %d, %p)\n", src, ns, dst);
 318
 319     while (ns--) {
 320         *dst++ = *src;
 321         *dst++ = *src++;
 322     }
 323 }
 324
 325 static  void cvtMS816K(const unsigned char* src, int ns, unsigned char* dst)
 326 {
 327     short       v;
 328     TRACE("(%p, %d, %p)\n", src, ns, dst);
 329
 330     while (ns--) {
 331         v = C816(*src++);
 332         W16(dst, v);            dst += 2;
 333         W16(dst, v);            dst += 2;
 334     }
 335 }
 336
 337 static  void cvtMS168K(const unsigned char* src, int ns, unsigned char* dst)
 338 {
 339     unsigned char v;
 340     TRACE("(%p, %d, %p)\n", src, ns, dst);
 341
 342     while (ns--) {
 343         v = C168(R16(src));     src += 2;
 344         *dst++ = v;
 345         *dst++ = v;
 346     }
 347 }
 348
 349 static  void cvtMS1616K(const unsigned char* src, int ns, unsigned char* dst)
 350 {
 351     short       v;
 352     TRACE("(%p, %d, %p)\n", src, ns, dst);
 353
 354     while (ns--) {
 355         v = R16(src);           src += 2;
 356         W16(dst, v);            dst += 2;
 357         W16(dst, v);            dst += 2;
 358     }
 359 }
 360
 361 static  void cvtSM88K(const unsigned char* src, int ns, unsigned char* dst)
 362 {
 363     TRACE("(%p, %d, %p)\n", src, ns, dst);
 364
 365     while (ns--) {
 366         *dst++ = M8(src[0], src[1]);
 367         src += 2;
 368     }
 369 }
 370
 371 static  void cvtSM816K(const unsigned char* src, int ns, unsigned char* dst)
 372 {
 373     short       v;
 374     TRACE("(%p, %d, %p)\n", src, ns, dst);
 375
 376     while (ns--) {
 377         v = M16(C816(src[0]), C816(src[1]));
 378         src += 2;
 379         W16(dst, v);            dst += 2;
 380     }
 381 }
 382
 383 static  void cvtSM168K(const unsigned char* src, int ns, unsigned char* dst)
 384 {
 385     TRACE("(%p, %d, %p)\n", src, ns, dst);
 386
 387     while (ns--) {
 388         *dst++ = C168(M16(R16(src), R16(src + 2)));
 389         src += 4;
 390     }
 391 }
 392
 393 static  void cvtSM1616K(const unsigned char* src, int ns, unsigned char* dst)
 394 {
 395     TRACE("(%p, %d, %p)\n", src, ns, dst);
 396
 397     while (ns--) {
 398         W16(dst, M16(R16(src),R16(src+2)));     dst += 2;
 399         src += 4;
 400     }
 401 }
 402
 403 static  void cvtMM816K(const unsigned char* src, int ns, unsigned char* dst)
 404 {
 405     TRACE("(%p, %d, %p)\n", src, ns, dst);
 406
 407     while (ns--) {
 408         W16(dst, C816(*src++));         dst += 2;
 409     }
 410 }
 411
 412 static  void cvtSS816K(const unsigned char* src, int ns, unsigned char* dst)
 413 {
 414     TRACE("(%p, %d, %p)\n", src, ns, dst);
 415
 416     while (ns--) {
 417         W16(dst, C816(*src++)); dst += 2;
 418         W16(dst, C816(*src++)); dst += 2;
 419     }
 420 }
 421
 422 static  void cvtMM168K(const unsigned char* src, int ns, unsigned char* dst)
 423 {
 424     TRACE("(%p, %d, %p)\n", src, ns, dst);
 425
 426     while (ns--) {
 427         *dst++ = C168(R16(src));        src += 2;
 428     }
 429 }
 430
 431 static  void cvtSS168K(const unsigned char* src, int ns, unsigned char* dst)
 432 {
 433     TRACE("(%p, %d, %p)\n", src, ns, dst);
 434
 435     while (ns--) {
 436         *dst++ = C168(R16(src));        src += 2;
 437         *dst++ = C168(R16(src));        src += 2;
 438     }
 439 }
 440
 441 static  void cvtMS248K(const unsigned char* src, int ns, unsigned char* dst)
 442 {
 443     unsigned char v;
 444     TRACE("(%p, %d, %p)\n", src, ns, dst);
 445
 446     while (ns--) {
 447         v = C248(R24(src));     src += 3;
 448         *dst++ = v;
 449         *dst++ = v;
 450     }
 451 }
 452
 453 static  void cvtSM248K(const unsigned char* src, int ns, unsigned char* dst)
 454 {
 455     TRACE("(%p, %d, %p)\n", src, ns, dst);
 456
 457     while (ns--) {
 458         *dst++ = C248(M24(R24(src), R24(src + 3)));
 459         src += 6;
 460     }
 461 }
 462
 463 static  void cvtMM248K(const unsigned char* src, int ns, unsigned char* dst)
 464 {
 465     TRACE("(%p, %d, %p)\n", src, ns, dst);
 466
 467     while (ns--) {
 468         *dst++ = C248(R24(src));        src += 3;
 469     }
 470 }
 471
 472 static  void cvtSS248K(const unsigned char* src, int ns, unsigned char* dst)
 473 {
 474     TRACE("(%p, %d, %p)\n", src, ns, dst);
 475
 476     while (ns--) {
 477         *dst++ = C248(R24(src));        src += 3;
 478         *dst++ = C248(R24(src));        src += 3;
 479     }
 480 }
 481
 482 static  void cvtMS2416K(const unsigned char* src, int ns, unsigned char* dst)
 483 {
 484     short v;
 485     TRACE("(%p, %d, %p)\n", src, ns, dst);
 486
 487     while (ns--) {
 488         v = C2416(R24(src));    src += 3;
 489         W16(dst, v);    dst += 2;
 490         W16(dst, v);    dst += 2;
 491     }
 492 }
 493
 494 static  void cvtSM2416K(const unsigned char* src, int ns, unsigned char* dst)
 495 {
 496     TRACE("(%p, %d, %p)\n", src, ns, dst);
 497
 498     while (ns--) {
 499         W16(dst, C2416(M24(R24(src), R24(src + 3))));
 500         dst += 2;
 501         src += 6;
 502     }
 503 }
 504
 505 static  void cvtMM2416K(const unsigned char* src, int ns, unsigned char* dst)
 506 {
 507     TRACE("(%p, %d, %p)\n", src, ns, dst);
 508
 509     while (ns--) {
 510         W16(dst, C2416(R24(src)));      dst += 2; src += 3;
 511     }
 512 }
 513
 514 static  void cvtSS2416K(const unsigned char* src, int ns, unsigned char* dst)
 515 {
 516     TRACE("(%p, %d, %p)\n", src, ns, dst);
 517
 518     while (ns--) {
 519         W16(dst, C2416(R24(src)));      dst += 2; src += 3;
 520         W16(dst, C2416(R24(src)));      dst += 2; src += 3;
 521     }
 522 }
 523
 524
 525 static const PCM_CONVERT_KEEP_RATE PCM_ConvertKeepRate[] = {
 526     cvtSS88K,   cvtSM88K,   cvtMS88K,   cvtMM88K,
 527     cvtSS816K,  cvtSM816K,  cvtMS816K,  cvtMM816K,
 528     NULL, NULL, NULL, NULL, /* TODO: 8->24 */
 529     cvtSS168K,  cvtSM168K,  cvtMS168K,  cvtMM168K,
 530     cvtSS1616K, cvtSM1616K, cvtMS1616K, cvtMM1616K,
 531     NULL, NULL, NULL, NULL, /* TODO: 16->24 */
 532     cvtSS248K, cvtSM248K, cvtMS248K, cvtMM248K,
 533     cvtSS2416K, cvtSM2416K, cvtMS2416K, cvtMM2416K,
 534     NULL, NULL, NULL, NULL, /* TODO: 24->24 */
 535 };
 536
 537 /* the conversion routines with rate conversion are labelled cvt<X><Y><N><M>C
 538  * where :
 539  * <X> is the (M)ono/(S)tereo configuration of  input channel
 540  * <Y> is the (M)ono/(S)tereo configuration of output channel
 541  * <N> is the number of bits of  input channel (8 or 16)
 542  * <M> is the number of bits of output channel (8 or 16)
 543  *
 544  */
 545
 546 static void cvtSS88C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 547                      const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 548 {
 549     DWORD error = srcRate / 2;
 550     DWORD maxSrc = *nsrc, maxDst = *ndst;
 551     *ndst = 0;
 552     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 553         error += dstRate;
 554         while (error > srcRate) {
 555             if (*ndst == maxDst)
 556                 return;
 557             (*ndst)++;
 558             error -= srcRate;
 559
 560             *dst++ = src[0];
 561             *dst++ = src[1];
 562         }
 563         src += 2;
 564     }
 565 }
 566
 567 static void cvtSM88C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 568                      const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 569 {
 570     DWORD error = srcRate / 2;
 571     DWORD maxSrc = *nsrc, maxDst = *ndst;
 572     *ndst = 0;
 573     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 574         error += dstRate;
 575         while (error > srcRate) {
 576             if (*ndst == maxDst)
 577                 return;
 578             (*ndst)++;
 579             error -= srcRate;
 580
 581             *dst++ = M8(src[0], src[1]);
 582         }
 583         src += 2;
 584     }
 585 }
 586
 587 static void cvtMS88C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 588                      const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 589 {
 590     DWORD error = srcRate / 2;
 591     DWORD maxSrc = *nsrc, maxDst = *ndst;
 592     *ndst = 0;
 593     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 594         error += dstRate;
 595         while (error > srcRate) {
 596             if (*ndst == maxDst)
 597                 return;
 598             (*ndst)++;
 599             error -= srcRate;
 600
 601             *dst++ = src[0];
 602             *dst++ = src[0];
 603         }
 604         src += 1;
 605     }
 606 }
 607
 608 static void cvtMM88C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 609                      const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 610 {
 611     DWORD error = srcRate / 2;
 612     DWORD maxSrc = *nsrc, maxDst = *ndst;
 613     *ndst = 0;
 614     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 615         error += dstRate;
 616         while (error > srcRate) {
 617             if (*ndst == maxDst)
 618                 return;
 619             (*ndst)++;
 620             error -= srcRate;
 621
 622             *dst++ = src[0];
 623         }
 624         src += 1;
 625     }
 626 }
 627
 628 static void cvtSS816C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 629                       const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 630 {
 631     DWORD error = srcRate / 2;
 632     DWORD maxSrc = *nsrc, maxDst = *ndst;
 633     *ndst = 0;
 634     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 635         error += dstRate;
 636         while (error > srcRate) {
 637             if (*ndst == maxDst)
 638                 return;
 639             (*ndst)++;
 640             error -= srcRate;
 641
 642             W16(dst, C816(src[0])); dst += 2;
 643             W16(dst, C816(src[1])); dst += 2;
 644         }
 645         src += 2;
 646     }
 647 }
 648
 649 static void cvtSM816C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 650                       const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 651 {
 652     DWORD error = srcRate / 2;
 653     DWORD maxSrc = *nsrc, maxDst = *ndst;
 654     *ndst = 0;
 655     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 656         error += dstRate;
 657         while (error > srcRate) {
 658             if (*ndst == maxDst)
 659                 return;
 660             (*ndst)++;
 661             error -= srcRate;
 662
 663             W16(dst, M16(C816(src[0]), C816(src[1]))); dst += 2;
 664         }
 665         src += 2;
 666     }
 667 }
 668
 669 static void cvtMS816C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 670                       const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 671 {
 672     DWORD error = srcRate / 2;
 673     DWORD maxSrc = *nsrc, maxDst = *ndst;
 674     *ndst = 0;
 675     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 676         error += dstRate;
 677         while (error > srcRate) {
 678             if (*ndst == maxDst)
 679                 return;
 680             (*ndst)++;
 681             error -= srcRate;
 682
 683             W16(dst, C816(src[0])); dst += 2;
 684             W16(dst, C816(src[0])); dst += 2;
 685         }
 686         src += 1;
 687     }
 688 }
 689
 690 static void cvtMM816C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 691                       const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 692 {
 693     DWORD error = srcRate / 2;
 694     DWORD maxSrc = *nsrc, maxDst = *ndst;
 695     *ndst = 0;
 696     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 697         error += dstRate;
 698         while (error > srcRate) {
 699             if (*ndst == maxDst)
 700                 return;
 701             (*ndst)++;
 702             error -= srcRate;
 703
 704             W16(dst, C816(src[0])); dst += 2;
 705         }
 706         src += 1;
 707     }
 708 }
 709
 710 static void cvtSS168C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 711                       const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 712 {
 713     DWORD error = srcRate / 2;
 714     DWORD maxSrc = *nsrc, maxDst = *ndst;
 715     *ndst = 0;
 716     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 717         error += dstRate;
 718         while (error > srcRate) {
 719             if (*ndst == maxDst)
 720                 return;
 721             (*ndst)++;
 722             error -= srcRate;
 723
 724             *dst++ = C168(R16(src));
 725             *dst++ = C168(R16(src + 2));
 726         }
 727         src += 4;
 728     }
 729 }
 730
 731 static void cvtSM168C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 732                       const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 733 {
 734     DWORD error = srcRate / 2;
 735     DWORD maxSrc = *nsrc, maxDst = *ndst;
 736     *ndst = 0;
 737     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 738         error += dstRate;
 739         while (error > srcRate) {
 740             if (*ndst == maxDst)
 741                 return;
 742             (*ndst)++;
 743             error -= srcRate;
 744
 745             *dst++ = C168(M16(R16(src), R16(src + 2)));
 746         }
 747         src += 4;
 748     }
 749 }
 750
 751 static void cvtMS168C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 752                       const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 753 {
 754     DWORD error = srcRate / 2;
 755     DWORD maxSrc = *nsrc, maxDst = *ndst;
 756     *ndst = 0;
 757     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 758         error += dstRate;
 759         while (error > srcRate) {
 760             if (*ndst == maxDst)
 761                 return;
 762             (*ndst)++;
 763             error -= srcRate;
 764
 765             *dst++ = C168(R16(src));
 766             *dst++ = C168(R16(src));
 767         }
 768         src += 2;
 769     }
 770 }
 771
 772 static void cvtMM168C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 773                       const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 774 {
 775     DWORD error = srcRate / 2;
 776     DWORD maxSrc = *nsrc, maxDst = *ndst;
 777     *ndst = 0;
 778     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 779         error += dstRate;
 780         while (error > srcRate) {
 781             if (*ndst == maxDst)
 782                 return;
 783             (*ndst)++;
 784             error -= srcRate;
 785
 786             *dst++ = C168(R16(src));
 787         }
 788         src += 2;
 789     }
 790 }
 791
 792 static void cvtSS1616C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 793                        const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 794 {
 795     DWORD error = srcRate / 2;
 796     DWORD maxSrc = *nsrc, maxDst = *ndst;
 797     *ndst = 0;
 798     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 799         error += dstRate;
 800         while (error > srcRate) {
 801             if (*ndst == maxDst)
 802                 return;
 803             (*ndst)++;
 804             error -= srcRate;
 805
 806             W16(dst, R16(src)); dst += 2;
 807             W16(dst, R16(src + 2)); dst += 2;
 808         }
 809         src += 4;
 810     }
 811 }
 812
 813 static void cvtSM1616C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 814                        const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 815 {
 816     DWORD error = srcRate / 2;
 817     DWORD maxSrc = *nsrc, maxDst = *ndst;
 818     *ndst = 0;
 819     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 820         error += dstRate;
 821         while (error > srcRate) {
 822             if (*ndst == maxDst)
 823                 return;
 824             (*ndst)++;
 825             error -= srcRate;
 826
 827             W16(dst, M16(R16(src), R16(src + 2))); dst += 2;
 828         }
 829         src += 4;
 830     }
 831 }
 832
 833 static void cvtMS1616C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 834                        const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 835 {
 836     DWORD error = srcRate / 2;
 837     DWORD maxSrc = *nsrc, maxDst = *ndst;
 838     *ndst = 0;
 839     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 840         error += dstRate;
 841         while (error > srcRate) {
 842             if (*ndst == maxDst)
 843                 return;
 844             (*ndst)++;
 845             error -= srcRate;
 846
 847             W16(dst, R16(src)); dst += 2;
 848             W16(dst, R16(src)); dst += 2;
 849         }
 850         src += 2;
 851     }
 852 }
 853
 854 static void cvtMM1616C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 855                        const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 856 {
 857     DWORD error = srcRate / 2;
 858     DWORD maxSrc = *nsrc, maxDst = *ndst;
 859     *ndst = 0;
 860     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 861         error += dstRate;
 862         while (error > srcRate) {
 863             if (*ndst == maxDst)
 864                 return;
 865             (*ndst)++;
 866             error -= srcRate;
 867
 868             W16(dst, R16(src)); dst += 2;
 869         }
 870         src += 2;
 871     }
 872 }
 873
 874 static void cvtSS2424C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 875                        const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 876 {
 877     DWORD error = srcRate / 2;
 878     DWORD maxSrc = *nsrc, maxDst = *ndst;
 879     *ndst = 0;
 880     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 881         error += dstRate;
 882         while (error > srcRate) {
 883             if (*ndst == maxDst)
 884                 return;
 885             (*ndst)++;
 886             error -= srcRate;
 887
 888             W24(dst, R24(src)); dst += 3;
 889             W24(dst, R24(src + 3)); dst += 3;
 890         }
 891         src += 6;
 892     }
 893 }
 894
 895 static void cvtSM2424C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 896                        const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 897 {
 898     DWORD error = srcRate / 2;
 899     DWORD maxSrc = *nsrc, maxDst = *ndst;
 900     *ndst = 0;
 901     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 902         error += dstRate;
 903         while (error > srcRate) {
 904             if (*ndst == maxDst)
 905                 return;
 906             (*ndst)++;
 907             error -= srcRate;
 908
 909             W24(dst, M24(R24(src), R24(src + 3))); dst += 3;
 910         }
 911         src += 6;
 912     }
 913 }
 914
 915 static void cvtMS2424C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 916                        const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 917 {
 918     DWORD error = srcRate / 2;
 919     DWORD maxSrc = *nsrc, maxDst = *ndst;
 920     *ndst = 0;
 921     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 922         error += dstRate;
 923         while (error > srcRate) {
 924             if (*ndst == maxDst)
 925                 return;
 926             (*ndst)++;
 927             error -= srcRate;
 928
 929             W24(dst, R24(src)); dst += 3;
 930             W24(dst, R24(src)); dst += 3;
 931         }
 932         src += 3;
 933     }
 934 }
 935
 936 static void cvtMM2424C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
 937                        const DWORD dstRate, unsigned char *dst, DWORD *ndst)
 938 {
 939     DWORD error = srcRate / 2;
 940     DWORD maxSrc = *nsrc, maxDst = *ndst;
 941     *ndst = 0;
 942     for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
 943         error += dstRate;
 944         while (error > srcRate) {
 945             if (*ndst == maxDst)
 946                 return;
 947             (*ndst)++;
 948             error -= srcRate;
 949
 950             W24(dst, R24(src)); dst += 3;
 951         }
 952         src += 3;
 953     }
 954 }
 955
 956 static const PCM_CONVERT_CHANGE_RATE PCM_ConvertChangeRate[] = {
 957     cvtSS88C,   cvtSM88C,   cvtMS88C,   cvtMM88C,
 958     cvtSS816C,  cvtSM816C,  cvtMS816C,  cvtMM816C,
 959     NULL, NULL, NULL, NULL, /* TODO: 8->24 */
 960     cvtSS168C,  cvtSM168C,  cvtMS168C,  cvtMM168C,
 961     cvtSS1616C, cvtSM1616C, cvtMS1616C, cvtMM1616C,
 962     NULL, NULL, NULL, NULL, /* TODO: 16->24 */
 963     NULL, NULL, NULL, NULL, /* TODO: 24->8 */
 964     NULL, NULL, NULL, NULL, /* TODO: 24->16 */
 965     cvtSS2424C, cvtSM2424C, cvtMS2424C, cvtMM2424C,
 966 };
 967
 968 /***********************************************************************
 969  *           PCM_DriverDetails
 970  *
 971  */
 972 static  LRESULT PCM_DriverDetails(PACMDRIVERDETAILSW add)
 973 {
 974     TRACE("(%p)\n", add);
 975
 976     add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
 977     add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
 978     add->wMid = MM_MICROSOFT;
 979     add->wPid = MM_MSFT_ACM_PCM;
 980     add->vdwACM = 0x01000000;
 981     add->vdwDriver = 0x01000000;
 982     add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CONVERTER;
 983     add->cFormatTags = 1;
 984     add->cFilterTags = 0;
 985     add->hicon = NULL;
 986     MultiByteToWideChar(CP_ACP, 0, "MS-PCM", -1, add->szShortName, ARRAY_SIZE(add->szShortName));
 987     MultiByteToWideChar(CP_ACP, 0, "Wine PCM converter", -1,
 988                         add->szLongName, ARRAY_SIZE(add->szLongName));
 989     MultiByteToWideChar(CP_ACP, 0, "Brought to you by the Wine team...", -1,
 990                         add->szCopyright, ARRAY_SIZE(add->szCopyright));
 991     MultiByteToWideChar(CP_ACP, 0, "Refer to LICENSE file", -1,
 992                         add->szLicensing, ARRAY_SIZE(add->szLicensing) );
 993     add->szFeatures[0] = 0;
 994
 995     return MMSYSERR_NOERROR;
 996 }
 997
 998 /***********************************************************************
 999  *           PCM_FormatTagDetails
1000  *
1001  */
1002 static  LRESULT PCM_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
1003 {
1004     TRACE("(%p, %08x)\n", aftd, dwQuery);
1005
1006     switch (dwQuery) {
1007     case ACM_FORMATTAGDETAILSF_INDEX:
1008         if (aftd->dwFormatTagIndex != 0) {
1009             WARN("not possible\n");
1010             return ACMERR_NOTPOSSIBLE;
1011         }
1012         break;
1013     case ACM_FORMATTAGDETAILSF_FORMATTAG:
1014         if (aftd->dwFormatTag != WAVE_FORMAT_PCM) {
1015             WARN("not possible\n");
1016             return ACMERR_NOTPOSSIBLE;
1017         }
1018         break;
1019     case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
1020         if (aftd->dwFormatTag != WAVE_FORMAT_UNKNOWN &&
1021             aftd->dwFormatTag != WAVE_FORMAT_PCM) {
1022             WARN("not possible\n");
1023             return ACMERR_NOTPOSSIBLE;
1024         }
1025         break;
1026     default:
1027         WARN("Unsupported query %08x\n", dwQuery);
1028         return MMSYSERR_NOTSUPPORTED;
1029     }
1030
1031     aftd->dwFormatTagIndex = 0;
1032     aftd->dwFormatTag = WAVE_FORMAT_PCM;
1033     aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
1034     aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CONVERTER;
1035     aftd->cStandardFormats = ARRAY_SIZE(PCM_Formats);
1036     aftd->szFormatTag[0] = 0;
1037
1038     return MMSYSERR_NOERROR;
1039 }
1040
1041 /***********************************************************************
1042  *           PCM_FormatDetails
1043  *
1044  */
1045 static  LRESULT PCM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
1046 {
1047     TRACE("(%p, %08x)\n", afd, dwQuery);
1048
1049     switch (dwQuery) {
1050     case ACM_FORMATDETAILSF_FORMAT:
1051         if (PCM_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) {
1052             WARN("not possible\n");
1053             return ACMERR_NOTPOSSIBLE;
1054         }
1055         break;
1056     case ACM_FORMATDETAILSF_INDEX:
1057         assert(afd->dwFormatIndex < ARRAY_SIZE(PCM_Formats));
1058         afd->pwfx->wFormatTag = WAVE_FORMAT_PCM;
1059         afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
1060         afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
1061         afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
1062         /* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not
1063          * accessible afd->pwfx->cbSize = 0;
1064          */
1065         afd->pwfx->nBlockAlign =
1066             (afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
1067         afd->pwfx->nAvgBytesPerSec =
1068             afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
1069         break;
1070     default:
1071         WARN("Unsupported query %08x\n", dwQuery);
1072         return MMSYSERR_NOTSUPPORTED;
1073     }
1074
1075     afd->dwFormatTag = WAVE_FORMAT_PCM;
1076     afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CONVERTER;
1077     afd->szFormat[0] = 0; /* let MSACM format this for us... */
1078     afd->cbwfx = sizeof(PCMWAVEFORMAT);
1079
1080     return MMSYSERR_NOERROR;
1081 }
1082
1083 /***********************************************************************
1084  *           PCM_FormatSuggest
1085  *
1086  */
1087 static  LRESULT PCM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
1088 {
1089     TRACE("(%p)\n", adfs);
1090
1091     /* some tests ... */
1092     if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
1093         adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
1094         PCM_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) {
1095             WARN("not possible\n");
1096             return ACMERR_NOTPOSSIBLE;
1097     }
1098
1099     /* is no suggestion for destination, then copy source value */
1100     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS)) {
1101         adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
1102     }
1103     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC)) {
1104         adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
1105     }
1106     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE)) {
1107         adfs->pwfxDst->wBitsPerSample = adfs->pwfxSrc->wBitsPerSample;
1108     }
1109     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG)) {
1110         if (adfs->pwfxSrc->wFormatTag != WAVE_FORMAT_PCM) {
1111             WARN("source format 0x%x not supported\n", adfs->pwfxSrc->wFormatTag);
1112             return ACMERR_NOTPOSSIBLE;
1113         }
1114         adfs->pwfxDst->wFormatTag = adfs->pwfxSrc->wFormatTag;
1115     } else {
1116         if (adfs->pwfxDst->wFormatTag != WAVE_FORMAT_PCM) {
1117             WARN("destination format 0x%x not supported\n", adfs->pwfxDst->wFormatTag);
1118             return ACMERR_NOTPOSSIBLE;
1119         }
1120     }
1121     /* check if result is ok */
1122     if (PCM_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) {
1123         WARN("not possible\n");
1124         return ACMERR_NOTPOSSIBLE;
1125     }
1126
1127     /* recompute other values */
1128     adfs->pwfxDst->nBlockAlign = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
1129     adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
1130
1131     return MMSYSERR_NOERROR;
1132 }
1133
1134 /***********************************************************************
1135  *           PCM_StreamOpen
1136  *
1137  */
1138 static  LRESULT PCM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
1139 {
1140     AcmPcmData* apd;
1141     int idx;
1142     DWORD flags;
1143
1144     TRACE("(%p)\n", adsi);
1145
1146     assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC));
1147
1148     switch(adsi->pwfxSrc->wBitsPerSample){
1149     case 8:
1150         idx = 0;
1151         break;
1152     case 16:
1153         idx = 12;
1154         break;
1155     case 24:
1156         if (adsi->pwfxSrc->nBlockAlign != 3 * adsi->pwfxSrc->nChannels) {
1157             FIXME("Source: 24-bit samples must be packed\n");
1158             return MMSYSERR_NOTSUPPORTED;
1159         }
1160         idx = 24;
1161         break;
1162     default:
1163         FIXME("Unsupported source bit depth: %u\n", adsi->pwfxSrc->wBitsPerSample);
1164         return MMSYSERR_NOTSUPPORTED;
1165     }
1166
1167     switch(adsi->pwfxDst->wBitsPerSample){
1168     case 8:
1169         break;
1170     case 16:
1171         idx += 4;
1172         break;
1173     case 24:
1174         if (adsi->pwfxDst->nBlockAlign != 3 * adsi->pwfxDst->nChannels) {
1175             FIXME("Destination: 24-bit samples must be packed\n");
1176             return MMSYSERR_NOTSUPPORTED;
1177         }
1178         idx += 8;
1179         break;
1180     default:
1181         FIXME("Unsupported destination bit depth: %u\n", adsi->pwfxDst->wBitsPerSample);
1182         return MMSYSERR_NOTSUPPORTED;
1183     }
1184
1185     if (adsi->pwfxSrc->nChannels      == 1)  idx += 2;
1186
1187     if (adsi->pwfxDst->nChannels      == 1)  idx += 1;
1188
1189     apd = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmPcmData));
1190     if (!apd)
1191         return MMSYSERR_NOMEM;
1192
1193     if (adsi->pwfxSrc->nSamplesPerSec == adsi->pwfxDst->nSamplesPerSec) {
1194         flags = 0;
1195         apd->cvt.cvtKeepRate = PCM_ConvertKeepRate[idx];
1196     } else {
1197         flags = PCM_RESAMPLE;
1198         apd->cvt.cvtChangeRate = PCM_ConvertChangeRate[idx];
1199     }
1200
1201     if(!apd->cvt.cvtChangeRate && !apd->cvt.cvtKeepRate){
1202         FIXME("Unimplemented conversion from %u -> %u bps\n",
1203             adsi->pwfxSrc->wBitsPerSample,
1204             adsi->pwfxDst->wBitsPerSample);
1205         HeapFree(GetProcessHeap(), 0, apd);
1206         return MMSYSERR_NOTSUPPORTED;
1207     }
1208
1209     adsi->dwDriver = (DWORD_PTR)apd;
1210     adsi->fdwDriver = flags;
1211
1212     return MMSYSERR_NOERROR;
1213 }
1214
1215 /***********************************************************************
1216  *           PCM_StreamClose
1217  *
1218  */
1219 static  LRESULT PCM_StreamClose(PACMDRVSTREAMINSTANCE adsi)
1220 {
1221     TRACE("(%p)\n", adsi);
1222
1223     HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
1224     return MMSYSERR_NOERROR;
1225 }
1226
1227 /***********************************************************************
1228  *           PCM_round
1229  *
1230  */
1231 static  inline DWORD    PCM_round(DWORD a, DWORD b, DWORD c)
1232 {
1233     assert(c);
1234     /* to be sure, always return an entire number of c... */
1235     return ((double)a * (double)b + (double)c - 1) / (double)c;
1236 }
1237
1238 /***********************************************************************
1239  *           PCM_StreamSize
1240  *
1241  */
1242 static  LRESULT PCM_StreamSize(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMSIZE adss)
1243 {
1244     DWORD       srcMask = ~(adsi->pwfxSrc->nBlockAlign - 1);
1245     DWORD       dstMask = ~(adsi->pwfxDst->nBlockAlign - 1);
1246
1247     TRACE("(%p, %p)\n", adsi, adss);
1248
1249     switch (adss->fdwSize) {
1250     case ACM_STREAMSIZEF_DESTINATION:
1251         /* cbDstLength => cbSrcLength */
1252         adss->cbSrcLength = PCM_round(adss->cbDstLength & dstMask,
1253                                       adsi->pwfxSrc->nAvgBytesPerSec,
1254                                       adsi->pwfxDst->nAvgBytesPerSec) & srcMask;
1255         break;
1256     case ACM_STREAMSIZEF_SOURCE:
1257         /* cbSrcLength => cbDstLength */
1258         adss->cbDstLength =  PCM_round(adss->cbSrcLength & srcMask,
1259                                        adsi->pwfxDst->nAvgBytesPerSec,
1260                                        adsi->pwfxSrc->nAvgBytesPerSec) & dstMask;
1261         break;
1262     default:
1263         WARN("Unsupported query %08x\n", adss->fdwSize);
1264         return MMSYSERR_NOTSUPPORTED;
1265     }
1266     return MMSYSERR_NOERROR;
1267 }
1268
1269 /***********************************************************************
1270  *           PCM_StreamConvert
1271  *
1272  */
1273 static LRESULT PCM_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
1274 {
1275     AcmPcmData* apd = (AcmPcmData*)adsi->dwDriver;
1276     DWORD       nsrc = NUM_OF(adsh->cbSrcLength, adsi->pwfxSrc->nBlockAlign);
1277     DWORD       ndst = NUM_OF(adsh->cbDstLength, adsi->pwfxDst->nBlockAlign);
1278
1279     TRACE("(%p, %p)\n", adsi, adsh);
1280
1281     TRACE("nsrc=%d,adsh->cbSrcLength=%d\n", nsrc, adsh->cbSrcLength);
1282     TRACE("ndst=%d,adsh->cbDstLength=%d\n", ndst, adsh->cbDstLength);
1283     TRACE("src [wFormatTag=%u, nChannels=%u, nSamplesPerSec=%u, nAvgBytesPerSec=%u, nBlockAlign=%u, wBitsPerSample=%u, cbSize=%u]\n",
1284           adsi->pwfxSrc->wFormatTag, adsi->pwfxSrc->nChannels, adsi->pwfxSrc->nSamplesPerSec, adsi->pwfxSrc->nAvgBytesPerSec,
1285           adsi->pwfxSrc->nBlockAlign, adsi->pwfxSrc->wBitsPerSample, adsi->pwfxSrc->cbSize);
1286     TRACE("dst [wFormatTag=%u, nChannels=%u, nSamplesPerSec=%u, nAvgBytesPerSec=%u, nBlockAlign=%u, wBitsPerSample=%u, cbSize=%u]\n",
1287           adsi->pwfxDst->wFormatTag, adsi->pwfxDst->nChannels, adsi->pwfxDst->nSamplesPerSec, adsi->pwfxDst->nAvgBytesPerSec,
1288           adsi->pwfxDst->nBlockAlign, adsi->pwfxDst->wBitsPerSample, adsi->pwfxDst->cbSize);
1289
1290     if (adsh->fdwConvert &
1291         ~(ACM_STREAMCONVERTF_BLOCKALIGN|
1292           ACM_STREAMCONVERTF_END|
1293           ACM_STREAMCONVERTF_START)) {
1294         FIXME("Unsupported fdwConvert (%08x), ignoring it\n", adsh->fdwConvert);
1295     }
1296     /* ACM_STREAMCONVERTF_BLOCKALIGN
1297      *  currently all conversions are block aligned, so do nothing for this flag
1298      * ACM_STREAMCONVERTF_END
1299      *  no pending data, so do nothing for this flag
1300      */
1301     if ((adsh->fdwConvert & ACM_STREAMCONVERTF_START) &&
1302         (adsi->fdwDriver & PCM_RESAMPLE)) {
1303     }
1304
1305     /* do the job */
1306     if (adsi->fdwDriver & PCM_RESAMPLE) {
1307         apd->cvt.cvtChangeRate(adsi->pwfxSrc->nSamplesPerSec, adsh->pbSrc, &nsrc,
1308                                adsi->pwfxDst->nSamplesPerSec, adsh->pbDst, &ndst);
1309     } else {
1310         if (nsrc < ndst) ndst = nsrc; else nsrc = ndst;
1311
1312         /* nsrc is now equal to ndst */
1313         apd->cvt.cvtKeepRate(adsh->pbSrc, nsrc, adsh->pbDst);
1314     }
1315
1316     adsh->cbSrcLengthUsed = nsrc * adsi->pwfxSrc->nBlockAlign;
1317     adsh->cbDstLengthUsed = ndst * adsi->pwfxDst->nBlockAlign;
1318
1319     return MMSYSERR_NOERROR;
1320 }
1321
1322 /**************************************************************************
1323  *                      DriverProc (MSACM32.@)
1324  */
1325 LRESULT CALLBACK PCM_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
1326                                        LPARAM dwParam1, LPARAM dwParam2)
1327 {
1328     TRACE("(%08lx %p %u %08lx %08lx);\n",
1329           dwDevID, hDriv, wMsg, dwParam1, dwParam2);
1330
1331     switch (wMsg) {
1332     case DRV_LOAD:              return 1;
1333     case DRV_FREE:              return 1;
1334     case DRV_OPEN:              return PCM_drvOpen((LPSTR)dwParam1, (PACMDRVOPENDESCW)dwParam2);
1335     case DRV_CLOSE:             return PCM_drvClose(dwDevID);
1336     case DRV_ENABLE:            return 1;
1337     case DRV_DISABLE:           return 1;
1338     case DRV_QUERYCONFIGURE:    return 1;
1339     case DRV_CONFIGURE:         MessageBoxA(0, "MSACM PCM filter !", "Wine Driver", MB_OK); return 1;
1340     case DRV_INSTALL:           return DRVCNF_RESTART;
1341     case DRV_REMOVE:            return DRVCNF_RESTART;
1342
1343     case ACMDM_DRIVER_NOTIFY:
1344         /* no caching from other ACM drivers is done so far */
1345         return MMSYSERR_NOERROR;
1346
1347     case ACMDM_DRIVER_DETAILS:
1348         return PCM_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
1349
1350     case ACMDM_FORMATTAG_DETAILS:
1351         return PCM_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
1352
1353     case ACMDM_FORMAT_DETAILS:
1354         return PCM_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
1355
1356     case ACMDM_FORMAT_SUGGEST:
1357         return PCM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
1358
1359     case ACMDM_STREAM_OPEN:
1360         return PCM_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
1361
1362     case ACMDM_STREAM_CLOSE:
1363         return PCM_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
1364
1365     case ACMDM_STREAM_SIZE:
1366         return PCM_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
1367
1368     case ACMDM_STREAM_CONVERT:
1369         return PCM_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
1370
1371     case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
1372     case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
1373         /* this converter is not a hardware driver */
1374     case ACMDM_FILTERTAG_DETAILS:
1375     case ACMDM_FILTER_DETAILS:
1376         /* this converter is not a filter */
1377     case ACMDM_STREAM_RESET:
1378         /* only needed for asynchronous driver... we aren't, so just say it */
1379     case ACMDM_STREAM_PREPARE:
1380     case ACMDM_STREAM_UNPREPARE:
1381         /* nothing special to do here... so don't do anything */
1382         return MMSYSERR_NOTSUPPORTED;
1383
1384     default:
1385         return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
1386     }
1387 }