dlls/winmm/mmio.c

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2 /*
   3  * MMIO functions
   4  *
   5  * Copyright 1998 Andrew Taylor
   6  * Copyright 1998 Ove Kåven
   7  * Copyright 2000 Eric Pouech
   8  */
   9
  10 /* Still to be done:
  11  *      + correct handling of global/local IOProcs
  12  *      + mode of mmio objects is not used (read vs write vs readwrite)
  13  *      + IO buffering is limited to 64k
  14  *      + optimization of internal buffers (seg / lin)
  15  *      + even in 32 bit only, a seg ptr IO buffer is allocated (after this is
  16  *        fixed, we'll have a proper 32/16 separation)
  17  *      + thread safeness
  18  *      + rename operation is broken
  19  */
  20
  21 #include <ctype.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <errno.h>
  25 #include <assert.h>
  26 #include "windef.h"
  27 #include "wine/winbase16.h"
  28 #include "heap.h"
  29 #include "selectors.h"
  30 #include "file.h"
  31 #include "mmsystem.h"
  32 #include "debugtools.h"
  33 #include "winemm.h"
  34
  35 DEFAULT_DEBUG_CHANNEL(mmio);
  36
  37 /**************************************************************************
  38  *                      mmioDosIOProc                           [internal]
  39  */
  40 static LRESULT mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
  41                              LPARAM lParam1, LPARAM lParam2)
  42 {
  43     LRESULT     ret = MMSYSERR_NOERROR;
  44
  45     TRACE("(%p, %X, %ld, %ld);\n", lpmmioinfo, uMessage, lParam1, lParam2);
  46
  47     switch (uMessage) {
  48     case MMIOM_OPEN:
  49         {
  50             /* Parameters:
  51              * lParam1 = szFileName parameter from mmioOpen
  52              * lParam2 = reserved (we use it for 16-bitness)
  53              * Returns: zero on success, error code on error
  54              * NOTE: lDiskOffset automatically set to zero
  55              */
  56             OFSTRUCT ofs;
  57             LPCSTR szFileName = (LPCSTR)lParam1;
  58
  59             if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
  60                 FIXME("MMIO_GETTEMP not implemented\n");
  61                 return MMIOERR_CANNOTOPEN;
  62             }
  63
  64             /* if filename NULL, assume open file handle in adwInfo[0] */
  65             if (!szFileName) {
  66                 if (lParam2)
  67                     lpmmioinfo->adwInfo[0] = FILE_GetHandle(lpmmioinfo->adwInfo[0]);
  68                 break;
  69             }
  70
  71             lpmmioinfo->adwInfo[0] = (DWORD)OpenFile(szFileName, &ofs,
  72                                                      lpmmioinfo->dwFlags);
  73             if (lpmmioinfo->adwInfo[0] == -1)
  74                 ret = MMIOERR_CANNOTOPEN;
  75         }
  76         break;
  77
  78     case MMIOM_CLOSE:
  79         /* Parameters:
  80          * lParam1 = wFlags parameter from mmioClose
  81          * lParam2 = unused
  82          * Returns: zero on success, error code on error
  83          */
  84         if (!(lParam1 & MMIO_FHOPEN))
  85             _lclose((HFILE)lpmmioinfo->adwInfo[0]);
  86         break;
  87
  88     case MMIOM_READ:
  89         /* Parameters:
  90          * lParam1 = huge pointer to read buffer
  91          * lParam2 = number of bytes to read
  92          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
  93          *         in wErrorRet)
  94          */
  95         ret = _lread((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
  96         if (ret != -1)
  97             lpmmioinfo->lDiskOffset += ret;
  98
  99         break;
 100
 101     case MMIOM_WRITE:
 102     case MMIOM_WRITEFLUSH:
 103         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 104
 105         /* Parameters:
 106          * lParam1 = huge pointer to write buffer
 107          * lParam2 = number of bytes to write
 108          * Returns: number of bytes written, -1 for error (error code in
 109          *              wErrorRet)
 110          */
 111         ret = _hwrite((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
 112         if (ret != -1)
 113             lpmmioinfo->lDiskOffset += ret;
 114         break;
 115
 116     case MMIOM_SEEK:
 117         /* Parameters:
 118          * lParam1 = new position
 119          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 120          * Returns: new file postion, -1 on error
 121          */
 122         ret = _llseek((HFILE)lpmmioinfo->adwInfo[0], (LONG)lParam1, (LONG)lParam2);
 123         if (ret != -1)
 124             lpmmioinfo->lDiskOffset = ret;
 125         return ret;
 126
 127     case MMIOM_RENAME:
 128         /* Parameters:
 129          * lParam1 = old name
 130          * lParam2 = new name
 131          * Returns: zero on success, non-zero on failure
 132          */
 133         FIXME("MMIOM_RENAME unimplemented\n");
 134         return MMIOERR_FILENOTFOUND;
 135
 136     default:
 137         FIXME("unexpected message %u\n", uMessage);
 138         return 0;
 139     }
 140
 141     return ret;
 142 }
 143
 144 /**************************************************************************
 145  *                      mmioMemIOProc                           [internal]
 146  */
 147 static LRESULT mmioMemIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
 148                              LPARAM lParam1, LPARAM lParam2)
 149 {
 150     TRACE("(%p,0x%04x,0x%08lx,0x%08lx)\n", lpmmioinfo, uMessage, lParam1, lParam2);
 151
 152     switch (uMessage) {
 153
 154     case MMIOM_OPEN:
 155         /* Parameters:
 156          * lParam1 = filename (must be NULL)
 157          * lParam2 = reserved (we use it for 16-bitness)
 158          * Returns: zero on success, error code on error
 159          * NOTE: lDiskOffset automatically set to zero
 160          */
 161         /* FIXME: io proc shouldn't change it */
 162         if (!(lpmmioinfo->dwFlags & MMIO_CREATE))
 163             lpmmioinfo->pchEndRead = lpmmioinfo->pchEndWrite;
 164         return 0;
 165
 166     case MMIOM_CLOSE:
 167         /* Parameters:
 168          * lParam1 = wFlags parameter from mmioClose
 169          * lParam2 = unused
 170          * Returns: zero on success, error code on error
 171          */
 172         return 0;
 173
 174     case MMIOM_READ:
 175         /* Parameters:
 176          * lParam1 = huge pointer to read buffer
 177          * lParam2 = number of bytes to read
 178          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
 179          *         in wErrorRet)
 180          * NOTE: lDiskOffset should be updated
 181          */
 182         FIXME("MMIOM_READ on memory files should not occur, buffer may be lost!\n");
 183         return 0;
 184
 185     case MMIOM_WRITE:
 186     case MMIOM_WRITEFLUSH:
 187         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 188
 189         /* Parameters:
 190          * lParam1 = huge pointer to write buffer
 191          * lParam2 = number of bytes to write
 192          * Returns: number of bytes written, -1 for error (error code in
 193          *              wErrorRet)
 194          * NOTE: lDiskOffset should be updated
 195          */
 196         FIXME("MMIOM_WRITE on memory files should not occur, buffer may be lost!\n");
 197         return 0;
 198
 199     case MMIOM_SEEK:
 200         /* Parameters:
 201          * lParam1 = new position
 202          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 203          * Returns: new file postion, -1 on error
 204          * NOTE: lDiskOffset should be updated
 205          */
 206         FIXME("MMIOM_SEEK on memory files should not occur, buffer may be lost!\n");
 207         return -1;
 208
 209     default:
 210         FIXME("unexpected message %u\n", uMessage);
 211         return 0;
 212     }
 213
 214     return 0;
 215 }
 216
 217
 218 enum mmioProcType {MMIO_PROC_16,MMIO_PROC_32A,MMIO_PROC_32W};
 219
 220 struct IOProcList
 221 {
 222     struct IOProcList*pNext;       /* Next item in linked list */
 223     FOURCC            fourCC;      /* four-character code identifying IOProc */
 224     LPMMIOPROC        pIOProc;     /* pointer to IProc */
 225     enum mmioProcType type;        /* 16, 32A or 32W */
 226     int               count;       /* number of objects linked to it */
 227 };
 228
 229 /* This array will be the entire list for most apps */
 230
 231 static struct IOProcList defaultProcs[] = {
 232     {&defaultProcs[1], FOURCC_DOS, (LPMMIOPROC)mmioDosIOProc, MMIO_PROC_32A, 0},
 233     {NULL,             FOURCC_MEM, (LPMMIOPROC)mmioMemIOProc, MMIO_PROC_32A, 0},
 234 };
 235
 236 static struct IOProcList*       pIOProcListAnchor = &defaultProcs[0];
 237
 238 /****************************************************************
 239  *              MMIO_FindProcNode                       [INTERNAL]
 240  *
 241  * Finds the ProcList node associated with a given FOURCC code.
 242  */
 243 static struct IOProcList*       MMIO_FindProcNode(FOURCC fccIOProc)
 244 {
 245     struct IOProcList*  pListNode;
 246
 247     for (pListNode = pIOProcListAnchor; pListNode; pListNode = pListNode->pNext) {
 248         if (pListNode->fourCC == fccIOProc) {
 249             return pListNode;
 250         }
 251     }
 252     return NULL;
 253 }
 254
 255 /****************************************************************
 256  *              MMIO_InstallIOProc                      [INTERNAL]
 257  */
 258 static LPMMIOPROC MMIO_InstallIOProc(FOURCC fccIOProc, LPMMIOPROC pIOProc,
 259                                      DWORD dwFlags, enum mmioProcType type)
 260 {
 261     LPMMIOPROC          lpProc = NULL;
 262     struct IOProcList*  pListNode;
 263     struct IOProcList** ppListNode;
 264
 265     TRACE("(%ld, %p, %08lX, %i)\n", fccIOProc, pIOProc, dwFlags, type);
 266
 267     if (dwFlags & MMIO_GLOBALPROC)
 268         FIXME("Global procedures not implemented\n");
 269
 270     /* just handle the known procedures for now */
 271     switch (dwFlags & (MMIO_INSTALLPROC|MMIO_REMOVEPROC|MMIO_FINDPROC)) {
 272     case MMIO_INSTALLPROC:
 273         /* Create new entry for the IOProc list */
 274         pListNode = HeapAlloc(GetProcessHeap(), 0, sizeof(*pListNode));
 275         if (pListNode) {
 276             /* Fill in this node */
 277             pListNode->fourCC = fccIOProc;
 278             pListNode->pIOProc = pIOProc;
 279             pListNode->type = type;
 280
 281             /* Stick it on the end of the list */
 282             pListNode->pNext = pIOProcListAnchor;
 283             pIOProcListAnchor = pListNode;
 284
 285             /* Return this IOProc - that's how the caller knows we succeeded */
 286             lpProc = pIOProc;
 287         }
 288         break;
 289
 290     case MMIO_REMOVEPROC:
 291         /*
 292          * Search for the node that we're trying to remove - note
 293          * that this method won't find the first item on the list, but
 294          * since the first two items on this list are ones we won't
 295          * let the user delete anyway, that's okay
 296          */
 297         ppListNode = &pIOProcListAnchor;
 298         while ((*ppListNode) && (*ppListNode)->fourCC != fccIOProc)
 299             ppListNode = &((*ppListNode)->pNext);
 300
 301         if (*ppListNode) { /* found it */
 302             /* FIXME: what should be done if an open mmio object uses this proc ?
 303              * shall we return an error, nuke the mmio object ?
 304              */
 305             if ((*ppListNode)->count) {
 306                 ERR("Cannot remove a mmIOProc while in use\n");
 307                 break;
 308             }
 309             /* remove it, but only if it isn't builtin */
 310             if ((*ppListNode) >= defaultProcs &&
 311                 (*ppListNode) < defaultProcs + sizeof(defaultProcs)) {
 312                 WARN("Tried to remove built-in mmio proc. Skipping\n");
 313             } else {
 314                 /* Okay, nuke it */
 315                 lpProc = (*ppListNode)->pIOProc;
 316                 HeapFree(GetProcessHeap(), 0, *ppListNode);
 317                 *ppListNode = (*ppListNode)->pNext;
 318             }
 319         }
 320         break;
 321
 322     case MMIO_FINDPROC:
 323         if ((pListNode = MMIO_FindProcNode(fccIOProc))) {
 324             lpProc = pListNode->pIOProc;
 325         }
 326         break;
 327     }
 328
 329     return lpProc;
 330 }
 331
 332 /****************************************************************
 333  *                      MMIO_Map32To16                  [INTERNAL]
 334  */
 335 static LRESULT  MMIO_Map32To16(DWORD wMsg, LPARAM* lp1, LPARAM* lp2)
 336 {
 337     switch (wMsg) {
 338     case MMIOM_OPEN:
 339         {
 340             void*       lp = SEGPTR_ALLOC(strlen((LPSTR)*lp1) + 1);
 341             if (!lp) return MMSYSERR_NOMEM;
 342
 343             strcpy((void*)SEGPTR_GET(lp), (LPSTR)*lp1);
 344             *lp1 = (LPARAM)lp;
 345         }
 346         break;
 347     case MMIOM_CLOSE:
 348     case MMIOM_SEEK:
 349         /* nothing to do */
 350         break;
 351     case MMIOM_READ:
 352     case MMIOM_WRITE:
 353     case MMIOM_WRITEFLUSH:
 354         {
 355             void*       lp = SEGPTR_ALLOC(*lp2);
 356             if (!lp) return MMSYSERR_NOMEM;
 357
 358             if (wMsg != MMIOM_READ)
 359                 memcpy((void*)SEGPTR_GET(lp), (void*)*lp1, *lp2);
 360             *lp1 = (LPARAM)lp;
 361         }
 362         break;
 363     default:
 364         TRACE("Not a mappable message (%ld)\n", wMsg);
 365     }
 366     return MMSYSERR_NOERROR;
 367 }
 368
 369 /****************************************************************
 370  *              MMIO_UnMap32To16                        [INTERNAL]
 371  */
 372 static LRESULT  MMIO_UnMap32To16(DWORD wMsg, LPARAM lParam1, LPARAM lParam2,
 373                                  LPARAM lp1, LPARAM lp2)
 374 {
 375     switch (wMsg) {
 376     case MMIOM_OPEN:
 377         if (!SEGPTR_FREE((void*)lp1)) {
 378             FIXME("bad free line=%d\n", __LINE__);
 379         }
 380         break;
 381     case MMIOM_CLOSE:
 382     case MMIOM_SEEK:
 383         /* nothing to do */
 384         break;
 385     case MMIOM_READ:
 386         memcpy((void*)lParam1, (void*)SEGPTR_GET((void*)lp1), lp2);
 387         /* fall thru */
 388     case MMIOM_WRITE:
 389     case MMIOM_WRITEFLUSH:
 390         if (!SEGPTR_FREE((void*)lp1)) {
 391             FIXME("bad free line=%d\n", __LINE__);
 392         }
 393         break;
 394     default:
 395         TRACE("Not a mappable message (%ld)\n", wMsg);
 396     }
 397     return MMSYSERR_NOERROR;
 398 }
 399
 400 /****************************************************************
 401  *              MMIO_GenerateInfoForIOProc              [INTERNAL]
 402  */
 403 static  SEGPTR  MMIO_GenerateInfoForIOProc(const WINE_MMIO* wm)
 404 {
 405     SEGPTR              lp = (SEGPTR)SEGPTR_ALLOC(sizeof(MMIOINFO16));
 406     LPMMIOINFO16        mmioInfo16 = (LPMMIOINFO16)SEGPTR_GET((void*)lp);
 407
 408     memset(mmioInfo16, 0, sizeof(MMIOINFO16));
 409
 410     mmioInfo16->lDiskOffset = wm->info.lDiskOffset;
 411     mmioInfo16->adwInfo[0]  = wm->info.adwInfo[0];
 412     mmioInfo16->adwInfo[1]  = wm->info.adwInfo[1];
 413     mmioInfo16->adwInfo[2]  = wm->info.adwInfo[2];
 414     mmioInfo16->adwInfo[3]  = wm->info.adwInfo[3];
 415
 416     return lp;
 417 }
 418
 419 /****************************************************************
 420  *              MMIO_UpdateInfoForIOProc                [INTERNAL]
 421  */
 422 static  LRESULT MMIO_UpdateInfoForIOProc(WINE_MMIO* wm, SEGPTR segmmioInfo16)
 423 {
 424     const MMIOINFO16*   mmioInfo16;
 425
 426     mmioInfo16 = (const MMIOINFO16*)SEGPTR_GET((void*)segmmioInfo16);
 427
 428     wm->info.lDiskOffset = mmioInfo16->lDiskOffset;
 429     wm->info.adwInfo[0]  = mmioInfo16->adwInfo[0];
 430     wm->info.adwInfo[1]  = mmioInfo16->adwInfo[1];
 431     wm->info.adwInfo[2]  = mmioInfo16->adwInfo[2];
 432     wm->info.adwInfo[3]  = mmioInfo16->adwInfo[3];
 433
 434     if (!SEGPTR_FREE((void*)segmmioInfo16)) {
 435         FIXME("bad free line=%d\n", __LINE__);
 436     }
 437
 438     return MMSYSERR_NOERROR;
 439 }
 440
 441 /****************************************************************
 442  *              MMIO_SendMessage                        [INTERNAL]
 443  */
 444 static LRESULT  MMIO_SendMessage(LPWINE_MMIO wm, DWORD wMsg, LPARAM lParam1,
 445                                  LPARAM lParam2, enum mmioProcType type)
 446 {
 447     LRESULT             result;
 448     SEGPTR              segmmioInfo16;
 449     LPARAM              lp1 = lParam1, lp2 = lParam2;
 450
 451     if (!wm->ioProc || !wm->info.pIOProc) {
 452         ERR("brrr\n");
 453         result = MMSYSERR_INVALPARAM;
 454     }
 455
 456     switch (wm->ioProc->type) {
 457     case MMIO_PROC_16:
 458         segmmioInfo16 = MMIO_GenerateInfoForIOProc(wm);
 459         if (wm->ioProc->type != type) {
 460             /* map (lParam1, lParam2) into (lp1, lp2) 32=>16 */
 461             if ((result = MMIO_Map32To16(wMsg, &lp1, &lp2)) != MMSYSERR_NOERROR)
 462                 return result;
 463         }
 464         /* FIXME: is wm->info.pIOProc a segmented or a linear address ?
 465          * sounds to me it's a segmented one, should use a thunk somewhere
 466          */
 467         result = ((LPMMIOPROC16)wm->info.pIOProc)((LPSTR)segmmioInfo16,
 468                                                   wMsg, lp1, lp2);
 469
 470         if (wm->ioProc->type != type) {
 471             MMIO_UnMap32To16(wMsg, lParam1, lParam2, lp1, lp2);
 472         }
 473         MMIO_UpdateInfoForIOProc(wm, segmmioInfo16);
 474         break;
 475     case MMIO_PROC_32A:
 476     case MMIO_PROC_32W:
 477         if (wm->ioProc->type != type) {
 478             /* map (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 479             WARN("NIY\n");
 480         }
 481         result = (wm->info.pIOProc)((LPSTR)&wm->info, wMsg, lp1, lp2);
 482
 483 #if 0
 484         if (wm->ioProc->type != type) {
 485             /* unmap (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 486         }
 487 #endif
 488         break;
 489     default:
 490         FIXME("Internal error\n");
 491         result = MMSYSERR_ERROR;
 492     }
 493
 494     return result;
 495 }
 496
 497 /**************************************************************************
 498  *                              MMIO_ParseExt                   [internal]
 499  *
 500  * Parses a filename for the extension.
 501  *
 502  * RETURNS
 503  *  The FOURCC code for the extension if found, else 0.
 504  */
 505 static FOURCC MMIO_ParseExt(LPCSTR szFileName)
 506 {
 507     /* Filenames are of the form file.ext+ABC
 508        FIXME: What if a '+' is part of the file name?
 509        For now, we take the last '+' present */
 510
 511     FOURCC ret = 0;
 512
 513     /* Note that ext{Start,End} point to the . and + respectively */
 514     LPSTR extEnd;
 515
 516     TRACE("(%s)\n",debugstr_a(szFileName));
 517
 518     extEnd = strrchr(szFileName,'+');
 519     if (extEnd) {
 520         /* Need to parse to find the extension */
 521         LPSTR extStart;
 522
 523         extStart = extEnd;
 524         while (extStart > szFileName && extStart[0] != '.') {
 525             extStart--;
 526         }
 527
 528         if (extStart == szFileName) {
 529             ERR("+ but no . in szFileName: %s\n", debugstr_a(szFileName));
 530         } else {
 531             CHAR ext[5];
 532
 533             if (extEnd - extStart - 1 > 4)
 534                 WARN("Extension length > 4\n");
 535             lstrcpynA(ext,extStart + 1,min(extEnd-extStart,5));
 536             TRACE("Got extension: %s\n", debugstr_a(ext));
 537             /* FOURCC codes identifying file-extentions must be uppercase */
 538             ret = mmioStringToFOURCCA(ext, MMIO_TOUPPER);
 539         }
 540     }
 541     return ret;
 542 }
 543
 544 /**************************************************************************
 545  *                              MMIO_Get                        [internal]
 546  *
 547  * Retirieves from current process the mmio object
 548  */
 549 static  LPWINE_MMIO     MMIO_Get(LPWINE_MM_IDATA iData, HMMIO h)
 550 {
 551     LPWINE_MMIO         wm = NULL;
 552
 553     if (!iData) iData = MULTIMEDIA_GetIData();
 554
 555     EnterCriticalSection(&iData->cs);
 556     for (wm = iData->lpMMIO; wm; wm = wm->lpNext) {
 557         if (wm->info.hmmio == h)
 558             break;
 559     }
 560     LeaveCriticalSection(&iData->cs);
 561     return wm;
 562 }
 563
 564 /**************************************************************************
 565  *                              MMIO_Create                     [internal]
 566  *
 567  * Creates an internal representation for a mmio instance
 568  */
 569 static  LPWINE_MMIO             MMIO_Create(void)
 570 {
 571     static      WORD    MMIO_counter = 0;
 572     LPWINE_MMIO         wm;
 573     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 574
 575     wm = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINE_MMIO));
 576     if (wm) {
 577         EnterCriticalSection(&iData->cs);
 578         while (MMIO_Get(iData, ++MMIO_counter));
 579         wm->info.hmmio = MMIO_counter;
 580         wm->lpNext = iData->lpMMIO;
 581         iData->lpMMIO = wm;
 582         LeaveCriticalSection(&iData->cs);
 583     }
 584     return wm;
 585 }
 586
 587 /**************************************************************************
 588  *                              MMIO_Destroy                    [internal]
 589  *-
 590  * Destroys an internal representation for a mmio instance
 591  */
 592 static  BOOL            MMIO_Destroy(LPWINE_MMIO wm)
 593 {
 594     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 595     LPWINE_MMIO*        m;
 596
 597     EnterCriticalSection(&iData->cs);
 598     for (m = &(iData->lpMMIO); *m && *m != wm; m = &(*m)->lpNext);
 599     if (*m) {
 600         *m = (*m)->lpNext;
 601         HeapFree(GetProcessHeap(), 0, *m);
 602         wm = NULL;
 603     }
 604     LeaveCriticalSection(&iData->cs);
 605     return wm ? FALSE : TRUE;
 606 }
 607
 608 /****************************************************************
 609  *                      MMIO_Flush                      [INTERNAL]
 610  */
 611 static  LRESULT MMIO_Flush(WINE_MMIO* wm, UINT uFlags)
 612 {
 613     if ((!wm->info.cchBuffer) || (wm->info.fccIOProc == FOURCC_MEM)) {
 614         return 0;
 615     }
 616
 617     /* not quite sure what to do here, but I'll guess */
 618     if (wm->info.dwFlags & MMIO_DIRTY) {
 619         MMIO_SendMessage(wm, MMIOM_SEEK, wm->info.lBufOffset,
 620                          SEEK_SET, MMIO_PROC_32A);
 621         MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)wm->info.pchBuffer,
 622                          wm->info.pchNext - wm->info.pchBuffer, MMIO_PROC_32A);
 623         wm->info.dwFlags &= ~MMIO_DIRTY;
 624     }
 625     if (uFlags & MMIO_EMPTYBUF) {
 626         wm->info.pchNext = wm->info.pchBuffer;
 627         wm->info.pchEndRead = wm->info.pchBuffer;
 628         wm->info.pchEndWrite = wm->info.pchBuffer;
 629     }
 630
 631     return 0;
 632 }
 633
 634 /***************************************************************************
 635  *                      MMIO_GrabNextBuffer                     [INTERNAL]
 636  */
 637 static LONG     MMIO_GrabNextBuffer(LPWINE_MMIO wm, int for_read)
 638 {
 639     LONG        size = wm->info.cchBuffer;
 640
 641     TRACE("bo=%lx do=%lx of=%lx\n",
 642           wm->info.lBufOffset, wm->info.lDiskOffset,
 643           MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A));
 644
 645     wm->info.lBufOffset = wm->info.lDiskOffset;
 646     wm->info.pchNext = wm->info.pchBuffer;
 647     wm->info.pchEndRead = wm->info.pchBuffer;
 648     wm->info.pchEndWrite = wm->info.pchBuffer;
 649
 650     if (for_read) {
 651         size = MMIO_SendMessage(wm, MMIOM_READ, (LPARAM)wm->info.pchBuffer,
 652                                 size, MMIO_PROC_32A);
 653         if (size > 0)
 654             wm->info.pchEndRead += size;
 655     }
 656     return size;
 657 }
 658
 659 /***************************************************************************
 660  *                      MMIO_SetBuffer                          [INTERNAL]
 661  */
 662 static  UINT    MMIO_SetBuffer(WINE_MMIO* wm, void* pchBuffer, LONG cchBuffer,
 663                                UINT uFlags, BOOL bFrom32)
 664 {
 665     TRACE("(%p %p %ld %u %d)\n", wm, pchBuffer, cchBuffer, uFlags, bFrom32);
 666
 667     if (uFlags)                 return MMSYSERR_INVALPARAM;
 668     if (cchBuffer > 0xFFFF) {
 669         FIXME("Not handling huge mmio buffers yet (%ld >= 64k)\n", cchBuffer);
 670         return MMSYSERR_INVALPARAM;
 671     }
 672
 673     if (MMIO_Flush(wm, MMIO_EMPTYBUF) != 0)
 674         return MMIOERR_CANNOTWRITE;
 675
 676     if ((!cchBuffer || pchBuffer) && (wm->info.dwFlags & MMIO_ALLOCBUF)) {
 677         GlobalUnlock16(wm->hMem);
 678         GlobalFree16(wm->hMem);
 679         wm->info.dwFlags &= ~MMIO_ALLOCBUF;
 680     }
 681     if (pchBuffer) {
 682         if (bFrom32) {
 683             wm->info.pchBuffer = pchBuffer;
 684             wm->buffer16 = 0;
 685         } else {
 686             wm->info.pchBuffer = PTR_SEG_TO_LIN(pchBuffer);
 687             wm->buffer16 = (SEGPTR)pchBuffer;
 688         }
 689         wm->hMem = 0;
 690     } else if (cchBuffer && (wm->info.dwFlags & MMIO_ALLOCBUF)) {
 691         HGLOBAL16 hNewBuf;
 692         GlobalUnlock16(wm->hMem);
 693         hNewBuf = GlobalReAlloc16(wm->hMem, cchBuffer, 0);
 694         if (!hNewBuf) {
 695             /* FIXME: this assumes the memory block didn't move */
 696             GlobalLock16(wm->hMem);
 697             return MMIOERR_OUTOFMEMORY;
 698         }
 699         wm->hMem = hNewBuf;
 700     } else if (cchBuffer) {
 701         if (!(wm->hMem = GlobalAlloc16(GMEM_MOVEABLE, cchBuffer)))
 702             return MMIOERR_OUTOFMEMORY;
 703         wm->info.dwFlags |= MMIO_ALLOCBUF;
 704     } else {
 705         wm->info.pchBuffer = NULL;
 706         wm->hMem = 0;
 707         wm->buffer16 = 0;
 708     }
 709
 710     if (wm->hMem) {
 711         wm->buffer16 = WIN16_GlobalLock16(wm->hMem);
 712         wm->info.pchBuffer = (void*)PTR_SEG_TO_LIN((void*)wm->buffer16);
 713     }
 714
 715     wm->info.cchBuffer = cchBuffer;
 716     wm->info.pchNext = wm->info.pchBuffer;
 717     wm->info.pchEndRead = wm->info.pchBuffer;
 718     wm->info.pchEndWrite = wm->info.pchBuffer + cchBuffer;
 719     wm->info.lBufOffset = 0;
 720
 721     return 0;
 722 }
 723
 724 /**************************************************************************
 725  *                      MMIO_Open                               [internal]
 726  */
 727 static HMMIO MMIO_Open(LPSTR szFileName, MMIOINFO* refmminfo,
 728                        DWORD dwOpenFlags, enum mmioProcType type)
 729 {
 730     LPWINE_MMIO         wm;
 731
 732     TRACE("('%s', %p, %08lX, %d);\n", szFileName, refmminfo, dwOpenFlags, type);
 733
 734     if (dwOpenFlags & (MMIO_PARSE|MMIO_EXIST)) {
 735         char    buffer[MAX_PATH];
 736
 737         if (GetFullPathNameA(szFileName, sizeof(buffer), buffer, NULL) >= sizeof(buffer))
 738             return (HMMIO16)FALSE;
 739         if ((dwOpenFlags & MMIO_EXIST) && (GetFileAttributesA(buffer) == -1))
 740             return (HMMIO)FALSE;
 741         strcpy(szFileName, buffer);
 742         return (HMMIO)TRUE;
 743     }
 744
 745     if ((wm = MMIO_Create()) == NULL)
 746         return 0;
 747
 748     /* If both params are NULL, then parse the file name */
 749     if (refmminfo->fccIOProc == 0 && refmminfo->pIOProc == NULL) {
 750         wm->info.fccIOProc = MMIO_ParseExt(szFileName);
 751         /* Handle any unhandled/error case. Assume DOS file */
 752         if (wm->info.fccIOProc == 0)
 753             wm->info.fccIOProc = FOURCC_DOS;
 754         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 755         wm->info.pIOProc = wm->ioProc->pIOProc;
 756         wm->bTmpIOProc = FALSE;
 757     }
 758     /* if just the four character code is present, look up IO proc */
 759     else if (refmminfo->pIOProc == NULL) {
 760         wm->info.fccIOProc = refmminfo->fccIOProc;
 761         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 762         wm->info.pIOProc = wm->ioProc->pIOProc;
 763         wm->bTmpIOProc = FALSE;
 764     }
 765     /* if IO proc specified, use it and specified four character code */
 766     else {
 767         wm->info.fccIOProc = refmminfo->fccIOProc;
 768         wm->info.pIOProc = refmminfo->pIOProc;
 769         MMIO_InstallIOProc(wm->info.fccIOProc, wm->info.pIOProc,
 770                            MMIO_INSTALLPROC, type);
 771         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 772         assert(wm->ioProc->pIOProc == refmminfo->pIOProc);
 773         wm->info.pIOProc = wm->ioProc->pIOProc;
 774         wm->bTmpIOProc = TRUE;
 775     }
 776
 777     wm->ioProc->count++;
 778     if (dwOpenFlags & MMIO_ALLOCBUF) {
 779         if ((refmminfo->wErrorRet = mmioSetBuffer(wm->info.hmmio, NULL,
 780                                                   MMIO_DEFAULTBUFFER, 0)))
 781             goto error1;
 782     } else if (wm->info.fccIOProc == FOURCC_MEM) {
 783         refmminfo->wErrorRet = MMIO_SetBuffer(wm, refmminfo->pchBuffer,
 784                                               refmminfo->cchBuffer, 0,
 785                                               type != MMIO_PROC_16);
 786         if (refmminfo->wErrorRet != MMSYSERR_NOERROR)
 787             goto error1;
 788     } /* else => unbuffered, wm->info.pchBuffer == NULL */
 789
 790     /* see mmioDosIOProc for that one */
 791     wm->info.adwInfo[0] = refmminfo->adwInfo[0];
 792     wm->info.dwFlags = dwOpenFlags;
 793
 794     /* call IO proc to actually open file */
 795     refmminfo->wErrorRet = MMIO_SendMessage(wm, MMIOM_OPEN, (LPARAM)szFileName,
 796                                             type == MMIO_PROC_16, MMIO_PROC_32A);
 797
 798     if (refmminfo->wErrorRet == 0)
 799         return wm->info.hmmio;
 800  error1:
 801     if (wm->ioProc) wm->ioProc->count--;
 802  error2:
 803     MMIO_Destroy(wm);
 804     return 0;
 805 }
 806
 807 /**************************************************************************
 808  *                              mmioOpenW                       [WINMM.123]
 809  */
 810 HMMIO WINAPI mmioOpenW(LPWSTR szFileName, MMIOINFO* lpmmioinfo,
 811                        DWORD dwOpenFlags)
 812 {
 813     HMMIO       ret;
 814     LPSTR       szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
 815
 816     if (lpmmioinfo) {
 817         ret = MMIO_Open(szFn, lpmmioinfo, dwOpenFlags, MMIO_PROC_32W);
 818     } else {
 819         MMIOINFO        mmioinfo;
 820
 821         mmioinfo.fccIOProc = 0;
 822         mmioinfo.pIOProc = NULL;
 823         mmioinfo.pchBuffer = NULL;
 824         mmioinfo.cchBuffer = 0;
 825
 826         ret = MMIO_Open(szFn, &mmioinfo, dwOpenFlags, MMIO_PROC_32W);
 827     }
 828
 829     HeapFree(GetProcessHeap(), 0, szFn);
 830     return ret;
 831 }
 832
 833 /**************************************************************************
 834  *                              mmioOpenA                       [WINMM.122]
 835  */
 836 HMMIO WINAPI mmioOpenA(LPSTR szFileName, MMIOINFO* lpmmioinfo,
 837                        DWORD dwOpenFlags)
 838 {
 839     HMMIO       ret;
 840
 841     if (lpmmioinfo) {
 842         ret = MMIO_Open(szFileName, lpmmioinfo, dwOpenFlags, MMIO_PROC_32A);
 843     } else {
 844         MMIOINFO        mmioinfo;
 845
 846         mmioinfo.fccIOProc = 0;
 847         mmioinfo.pIOProc = NULL;
 848         mmioinfo.pchBuffer = NULL;
 849         mmioinfo.cchBuffer = 0;
 850
 851         ret = MMIO_Open(szFileName, &mmioinfo, dwOpenFlags, MMIO_PROC_32A);
 852     }
 853     return ret;
 854 }
 855
 856 /**************************************************************************
 857  *                              mmioOpen                [MMSYSTEM.1210]
 858  */
 859 HMMIO16 WINAPI mmioOpen16(LPSTR szFileName, MMIOINFO16* lpmmioinfo16,
 860                           DWORD dwOpenFlags)
 861 {
 862     HMMIO       ret;
 863     MMIOINFO    mmio;
 864
 865     if (lpmmioinfo16) {
 866         MMIOINFO        mmioinfo;
 867
 868         memset(&mmioinfo, 0, sizeof(mmioinfo));
 869
 870         mmioinfo.dwFlags     = lpmmioinfo16->dwFlags;
 871         mmioinfo.fccIOProc   = lpmmioinfo16->fccIOProc;
 872         mmioinfo.pIOProc     = (LPMMIOPROC)lpmmioinfo16->pIOProc;
 873         mmioinfo.cchBuffer   = lpmmioinfo16->cchBuffer;
 874         mmioinfo.pchBuffer   = lpmmioinfo16->pchBuffer;
 875         mmioinfo.adwInfo[0]  = lpmmioinfo16->adwInfo[0];
 876         mmioinfo.adwInfo[1]  = lpmmioinfo16->adwInfo[1];
 877         mmioinfo.adwInfo[2]  = lpmmioinfo16->adwInfo[2];
 878         mmioinfo.adwInfo[3]  = lpmmioinfo16->adwInfo[3];
 879
 880         ret = MMIO_Open(szFileName, &mmioinfo, dwOpenFlags, MMIO_PROC_16);
 881
 882         mmioGetInfo16(mmioinfo.hmmio, lpmmioinfo16, 0);
 883         lpmmioinfo16->wErrorRet = ret;
 884     } else {
 885         mmio.fccIOProc = 0;
 886         mmio.pIOProc = NULL;
 887         mmio.pchBuffer = NULL;
 888         mmio.cchBuffer = 0;
 889         ret = MMIO_Open(szFileName, &mmio, dwOpenFlags, FALSE);
 890     }
 891     return ret;
 892 }
 893
 894
 895 /**************************************************************************
 896  *                              mmioClose               [WINMM.114]
 897  */
 898 MMRESULT WINAPI mmioClose(HMMIO hmmio, UINT uFlags)
 899 {
 900     LPWINE_MMIO wm;
 901     MMRESULT    result;
 902
 903     TRACE("(%04X, %04X);\n", hmmio, uFlags);
 904
 905     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 906         return MMSYSERR_INVALHANDLE;
 907
 908     if ((result = MMIO_Flush(wm, MMIO_EMPTYBUF)) != 0)
 909         return result;
 910
 911     result = MMIO_SendMessage(wm, MMIOM_CLOSE, uFlags, 0, MMIO_PROC_32A);
 912
 913     mmioSetBuffer(hmmio, NULL, 0, 0);
 914
 915     wm->ioProc->count--;
 916
 917     if (wm->bTmpIOProc)
 918         MMIO_InstallIOProc(wm->info.fccIOProc, NULL,
 919                            MMIO_REMOVEPROC, wm->ioProc->type);
 920
 921     MMIO_Destroy(wm);
 922
 923     return result;
 924 }
 925
 926 /**************************************************************************
 927  *                              mmioClose               [MMSYSTEM.1211]
 928  */
 929 MMRESULT16 WINAPI mmioClose16(HMMIO16 hmmio, UINT16 uFlags)
 930 {
 931     return mmioClose(hmmio, uFlags);
 932 }
 933
 934 /**************************************************************************
 935  *                              mmioRead                [WINMM.124]
 936  */
 937 LONG WINAPI mmioRead(HMMIO hmmio, HPSTR pch, LONG cch)
 938 {
 939     LPWINE_MMIO wm;
 940     LONG        count;
 941
 942     TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
 943
 944     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 945         return -1;
 946
 947     /* unbuffered case first */
 948     if (!wm->info.pchBuffer)
 949         return MMIO_SendMessage(wm, MMIOM_READ, (LPARAM)pch, cch, MMIO_PROC_32A);
 950
 951     /* first try from current buffer */
 952     if (wm->info.pchNext != wm->info.pchEndRead) {
 953         count = wm->info.pchEndRead - wm->info.pchNext;
 954         if (count > cch || count < 0) count = cch;
 955         memcpy(pch, wm->info.pchNext, count);
 956         wm->info.pchNext += count;
 957         pch += count;
 958         cch -= count;
 959     } else
 960         count = 0;
 961
 962     if (cch && (wm->info.fccIOProc != FOURCC_MEM)) {
 963         assert(wm->info.cchBuffer);
 964
 965         while (cch) {
 966             LONG size;
 967
 968             size = MMIO_GrabNextBuffer(wm, TRUE);
 969             if (size <= 0) break;
 970             if (size > cch) size = cch;
 971             memcpy(pch, wm->info.pchBuffer, size);
 972             wm->info.pchNext += size;
 973             pch += size;
 974             cch -= size;
 975             count += size;
 976         }
 977     }
 978
 979     TRACE("count=%ld\n", count);
 980     return count;
 981 }
 982
 983 /**************************************************************************
 984  *                              mmioRead                [MMSYSTEM.1212]
 985  */
 986 LONG WINAPI mmioRead16(HMMIO16 hmmio, HPSTR pch, LONG cch)
 987 {
 988     return mmioRead(hmmio, pch, cch);
 989 }
 990
 991 /**************************************************************************
 992  *                              mmioWrite               [WINMM.133]
 993  */
 994 LONG WINAPI mmioWrite(HMMIO hmmio, HPCSTR pch, LONG cch)
 995 {
 996     LPWINE_MMIO wm;
 997     LONG count;
 998
 999     TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
1000
1001     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1002         return -1;
1003
1004     if (wm->info.cchBuffer) {
1005         count = 0;
1006         while (cch) {
1007             if (wm->info.pchNext != wm->info.pchEndWrite) {
1008                 count = wm->info.pchEndWrite - wm->info.pchNext;
1009                 if (count > cch || count < 0) count = cch;
1010                 memcpy(wm->info.pchNext, pch, count);
1011                 wm->info.pchNext += count;
1012                 pch += count;
1013                 cch -= count;
1014                 wm->info.dwFlags |= MMIO_DIRTY;
1015             } else
1016                 if (wm->info.fccIOProc == FOURCC_MEM) {
1017                     if (wm->info.adwInfo[0]) {
1018                         /* from where would we get the memory handle? */
1019                         FIXME("memory file expansion not implemented!\n");
1020                     } else break;
1021                 }
1022
1023             if (wm->info.pchNext == wm->info.pchEndWrite &&
1024                 MMIO_Flush(wm, MMIO_EMPTYBUF)) break;
1025         }
1026     } else {
1027         count = MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)pch, cch, MMIO_PROC_32A);
1028         wm->info.lBufOffset = wm->info.lDiskOffset;
1029     }
1030
1031     TRACE("count=%ld\n", count);
1032     return count;
1033 }
1034
1035 /**************************************************************************
1036  *                              mmioWrite               [MMSYSTEM.1213]
1037  */
1038 LONG WINAPI mmioWrite16(HMMIO16 hmmio, HPCSTR pch, LONG cch)
1039 {
1040     return mmioWrite(hmmio,pch,cch);
1041 }
1042
1043 /**************************************************************************
1044  *                              mmioSeek                [MMSYSTEM.1214]
1045  */
1046 LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
1047 {
1048     LPWINE_MMIO wm;
1049     LONG        offset;
1050
1051     TRACE("(%04X, %08lX, %d);\n", hmmio, lOffset, iOrigin);
1052
1053     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1054         return MMSYSERR_INVALHANDLE;
1055
1056     if (!wm->info.pchBuffer)
1057         return MMIO_SendMessage(wm, MMIOM_SEEK, lOffset, iOrigin, MMIO_PROC_32A);
1058
1059     switch (iOrigin) {
1060     case SEEK_SET:
1061         offset = lOffset;
1062         break;
1063     case SEEK_CUR:
1064         offset = wm->info.lBufOffset + (wm->info.pchNext - wm->info.pchBuffer) + lOffset;
1065         break;
1066     case SEEK_END:
1067         if (wm->info.fccIOProc == FOURCC_MEM) {
1068             offset = wm->info.cchBuffer;
1069         } else {
1070             assert(MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A) == wm->info.lDiskOffset);
1071             offset = MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_END, MMIO_PROC_32A);
1072             MMIO_SendMessage(wm, MMIOM_SEEK, wm->info.lDiskOffset, SEEK_SET, MMIO_PROC_32A);
1073         }
1074         offset += lOffset;
1075         break;
1076     default:
1077         return -1;
1078     }
1079
1080     /* stay in same buffer ? */
1081     /* some memory mapped buffers are defined with -1 as a size */
1082     if ((wm->info.cchBuffer > 0) &&
1083         ((offset < wm->info.lBufOffset) ||
1084          (offset >= wm->info.lBufOffset + wm->info.cchBuffer))) {
1085
1086         /* condition to change buffer */
1087         if ((wm->info.fccIOProc == FOURCC_MEM) ||
1088             MMIO_Flush(wm, MMIO_EMPTYBUF) ||
1089             /* this also sets the wm->info.lDiskOffset field */
1090             MMIO_SendMessage(wm, MMIOM_SEEK,
1091                              (offset / wm->info.cchBuffer) * wm->info.cchBuffer,
1092                              SEEK_SET, MMIO_PROC_32A) == -1)
1093             return -1;
1094         MMIO_GrabNextBuffer(wm, TRUE);
1095     }
1096
1097     wm->info.pchNext = wm->info.pchBuffer + (offset - wm->info.lBufOffset);
1098
1099     TRACE("=> %ld\n", offset);
1100     return offset;
1101 }
1102
1103 /**************************************************************************
1104  *                              mmioSeek                [MMSYSTEM.1214]
1105  */
1106 LONG WINAPI mmioSeek16(HMMIO16 hmmio, LONG lOffset, INT16 iOrigin)
1107 {
1108     return mmioSeek(hmmio, lOffset, iOrigin);
1109 }
1110
1111 /**************************************************************************
1112  *                              mmioGetInfo             [MMSYSTEM.1215]
1113  */
1114 UINT16 WINAPI mmioGetInfo16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1115 {
1116     LPWINE_MMIO wm;
1117
1118     TRACE("mmioGetInfo\n");
1119
1120     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1121         return MMSYSERR_INVALHANDLE;
1122
1123     if (!wm->buffer16)
1124         return MMSYSERR_ERROR;
1125
1126     lpmmioinfo->dwFlags     = wm->info.dwFlags;
1127     lpmmioinfo->fccIOProc   = wm->info.fccIOProc;
1128     lpmmioinfo->pIOProc     = (LPMMIOPROC16)wm->info.pIOProc;
1129     lpmmioinfo->wErrorRet   = wm->info.wErrorRet;
1130     lpmmioinfo->hTask       = wm->info.hTask;
1131     lpmmioinfo->cchBuffer   = wm->info.cchBuffer;
1132     lpmmioinfo->pchBuffer   = (void*)wm->buffer16;
1133     lpmmioinfo->pchNext     = (void*)(wm->buffer16 + (wm->info.pchNext - wm->info.pchBuffer));
1134     lpmmioinfo->pchEndRead  = (void*)(wm->buffer16 + (wm->info.pchEndRead - wm->info.pchBuffer));
1135     lpmmioinfo->pchEndWrite = (void*)(wm->buffer16 + (wm->info.pchEndWrite - wm->info.pchBuffer));
1136     lpmmioinfo->lBufOffset  = wm->info.lBufOffset;
1137     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1138     lpmmioinfo->adwInfo[0]  = wm->info.adwInfo[0];
1139     lpmmioinfo->adwInfo[1]  = wm->info.adwInfo[1];
1140     lpmmioinfo->adwInfo[2]  = wm->info.adwInfo[2];
1141     lpmmioinfo->adwInfo[3]  = wm->info.adwInfo[3];
1142     lpmmioinfo->dwReserved1 = 0;
1143     lpmmioinfo->dwReserved2 = 0;
1144     lpmmioinfo->hmmio = wm->info.hmmio;
1145
1146     return 0;
1147 }
1148
1149 /**************************************************************************
1150  *                              mmioGetInfo             [WINMM.118]
1151  */
1152 UINT WINAPI mmioGetInfo(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1153 {
1154     LPWINE_MMIO         wm;
1155
1156     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1157
1158     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1159         return MMSYSERR_INVALHANDLE;
1160
1161     memcpy(lpmmioinfo, &wm->info, sizeof(MMIOINFO));
1162
1163     return 0;
1164 }
1165
1166 /**************************************************************************
1167  *                              mmioSetInfo16           [MMSYSTEM.1216]
1168  */
1169 UINT16 WINAPI mmioSetInfo16(HMMIO16 hmmio, const MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1170 {
1171     LPWINE_MMIO         wm;
1172
1173     TRACE("mmioSetInfo\n");
1174
1175     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1176         return MMSYSERR_INVALHANDLE;
1177
1178     /* check if seg and lin buffers are the same */
1179     if (wm->info.cchBuffer != lpmmioinfo->cchBuffer ||
1180         wm->info.pchBuffer != PTR_SEG_TO_LIN((void*)wm->buffer16))
1181         return MMSYSERR_INVALPARAM;
1182
1183     /* check pointers coherence */
1184     if (lpmmioinfo->pchNext < lpmmioinfo->pchBuffer ||
1185         lpmmioinfo->pchNext > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1186         lpmmioinfo->pchEndRead < lpmmioinfo->pchBuffer ||
1187         lpmmioinfo->pchEndRead > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1188         lpmmioinfo->pchEndWrite < lpmmioinfo->pchBuffer ||
1189         lpmmioinfo->pchEndWrite > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer)
1190         return MMSYSERR_INVALPARAM;
1191
1192     wm->info.pchNext     = wm->info.pchBuffer + (lpmmioinfo->pchNext     - lpmmioinfo->pchBuffer);
1193     wm->info.pchEndRead  = wm->info.pchBuffer + (lpmmioinfo->pchEndRead  - lpmmioinfo->pchBuffer);
1194     wm->info.pchEndWrite = wm->info.pchBuffer + (lpmmioinfo->pchEndWrite - lpmmioinfo->pchBuffer);
1195
1196     return 0;
1197 }
1198
1199 /**************************************************************************
1200  *                              mmioSetInfo             [WINMM.130]
1201  */
1202 UINT WINAPI mmioSetInfo(HMMIO hmmio, const MMIOINFO* lpmmioinfo, UINT uFlags)
1203 {
1204     LPWINE_MMIO         wm;
1205
1206     TRACE("mmioSetInfo\n");
1207
1208     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1209         return MMSYSERR_INVALHANDLE;
1210
1211     /* check pointers coherence */
1212     if (lpmmioinfo->pchNext < wm->info.pchBuffer ||
1213         lpmmioinfo->pchNext > wm->info.pchBuffer + wm->info.cchBuffer ||
1214         lpmmioinfo->pchEndRead < wm->info.pchBuffer ||
1215         lpmmioinfo->pchEndRead > wm->info.pchBuffer + wm->info.cchBuffer ||
1216         lpmmioinfo->pchEndWrite < wm->info.pchBuffer ||
1217         lpmmioinfo->pchEndWrite > wm->info.pchBuffer + wm->info.cchBuffer)
1218         return MMSYSERR_INVALPARAM;
1219
1220     wm->info.pchNext = lpmmioinfo->pchNext;
1221     wm->info.pchEndRead = lpmmioinfo->pchEndRead;
1222
1223     return 0;
1224 }
1225
1226 /**************************************************************************
1227 *                               mmioSetBuffer           [WINMM.129]
1228 */
1229 UINT WINAPI mmioSetBuffer(HMMIO hmmio, LPSTR pchBuffer, LONG cchBuffer, UINT uFlags)
1230 {
1231     LPWINE_MMIO         wm;
1232
1233     TRACE("(hmmio=%04x, pchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1234           hmmio, pchBuffer, cchBuffer, uFlags);
1235
1236     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1237         return MMSYSERR_INVALHANDLE;
1238
1239     return MMIO_SetBuffer(wm, pchBuffer, cchBuffer, uFlags, TRUE);
1240 }
1241
1242 /**************************************************************************
1243  *                              mmioSetBuffer           [MMSYSTEM.1217]
1244  */
1245 UINT16 WINAPI mmioSetBuffer16(HMMIO16 hmmio, LPSTR segpchBuffer,
1246                               LONG cchBuffer, UINT16 uFlags)
1247 {
1248     LPWINE_MMIO         wm;
1249
1250     TRACE("(hmmio=%04x, segpchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1251           hmmio, segpchBuffer, cchBuffer, uFlags);
1252
1253     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1254         return MMSYSERR_INVALHANDLE;
1255
1256     return MMIO_SetBuffer(wm, segpchBuffer, cchBuffer, uFlags, FALSE);
1257 }
1258
1259 /**************************************************************************
1260  *                              mmioFlush               [WINMM.117]
1261  */
1262 UINT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
1263 {
1264     LPWINE_MMIO         wm;
1265
1266     TRACE("(%04X, %04X)\n", hmmio, uFlags);
1267
1268     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1269         return MMSYSERR_INVALHANDLE;
1270
1271     return MMIO_Flush(wm, uFlags);
1272 }
1273
1274 /**************************************************************************
1275  *                              mmioFlush               [MMSYSTEM.1218]
1276  */
1277 UINT16 WINAPI mmioFlush16(HMMIO16 hmmio, UINT16 uFlags)
1278 {
1279     return mmioFlush(hmmio, uFlags);
1280 }
1281
1282 /**************************************************************************
1283  *                              mmioAdvance             [MMSYSTEM.1219]
1284  */
1285 UINT WINAPI mmioAdvance(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1286 {
1287     LPWINE_MMIO         wm;
1288
1289     TRACE("hmmio=%04X, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
1290
1291     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1292         return MMSYSERR_INVALHANDLE;
1293
1294     if (!wm->info.cchBuffer)
1295         return MMIOERR_UNBUFFERED;
1296
1297     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1298         return MMSYSERR_INVALPARAM;
1299
1300     if (MMIO_Flush(wm, MMIO_EMPTYBUF))
1301         return MMIOERR_CANNOTWRITE;
1302
1303     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1304
1305     lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1306     lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1307         (wm->info.pchEndRead - wm->info.pchBuffer);
1308     lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1309         (wm->info.pchEndWrite - wm->info.pchBuffer);
1310     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1311     lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1312     return 0;
1313 }
1314
1315 /**********************************************************m****************
1316  *                              mmioAdvance             [MMSYSTEM.1219]
1317  */
1318 UINT16 WINAPI mmioAdvance16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1319 {
1320     LPWINE_MMIO         wm;
1321
1322     TRACE("mmioAdvance\n");
1323
1324     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1325         return MMSYSERR_INVALHANDLE;
1326
1327     if (!wm->info.cchBuffer)
1328         return MMIOERR_UNBUFFERED;
1329
1330     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1331         return MMSYSERR_INVALPARAM;
1332
1333     if (MMIO_Flush(wm, MMIO_EMPTYBUF))
1334         return MMIOERR_CANNOTWRITE;
1335
1336     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1337
1338     lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1339     lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1340         (wm->info.pchEndRead - wm->info.pchBuffer);
1341     lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1342         (wm->info.pchEndWrite - wm->info.pchBuffer);
1343     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1344     lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1345
1346     return 0;
1347 }
1348
1349 /**************************************************************************
1350  *                              mmioStringToFOURCCA     [WINMM.131]
1351  */
1352 FOURCC WINAPI mmioStringToFOURCCA(LPCSTR sz, UINT uFlags)
1353 {
1354     CHAR cc[4];
1355     int i = 0;
1356
1357     for (i = 0; i < 4 && sz[i]; i++) {
1358         if (uFlags & MMIO_TOUPPER) {
1359             cc[i] = toupper(sz[i]);
1360         } else {
1361             cc[i] = sz[i];
1362         }
1363     }
1364
1365     /* Pad with spaces */
1366     while (i < 4) {
1367         cc[i] = ' ';
1368         i++;
1369     }
1370
1371     TRACE("Got %c%c%c%c\n",cc[0],cc[1],cc[2],cc[3]);
1372     return mmioFOURCC(cc[0],cc[1],cc[2],cc[3]);
1373 }
1374
1375 /**************************************************************************
1376  *                              mmioStringToFOURCCW     [WINMM.132]
1377  */
1378 FOURCC WINAPI mmioStringToFOURCCW(LPCWSTR sz, UINT uFlags)
1379 {
1380     LPSTR       szA = HEAP_strdupWtoA(GetProcessHeap(),0,sz);
1381     FOURCC      ret = mmioStringToFOURCCA(szA,uFlags);
1382
1383     HeapFree(GetProcessHeap(),0,szA);
1384     return ret;
1385 }
1386
1387 /**************************************************************************
1388  *                              mmioStringToFOURCC      [MMSYSTEM.1220]
1389  */
1390 FOURCC WINAPI mmioStringToFOURCC16(LPCSTR sz, UINT16 uFlags)
1391 {
1392     return mmioStringToFOURCCA(sz, uFlags);
1393 }
1394
1395 /**************************************************************************
1396  *              mmioInstallIOProc16    [MMSYSTEM.1221]
1397  */
1398 LPMMIOPROC16 WINAPI mmioInstallIOProc16(FOURCC fccIOProc, LPMMIOPROC16 pIOProc,
1399                                         DWORD dwFlags)
1400 {
1401     return (LPMMIOPROC16)MMIO_InstallIOProc(fccIOProc, (LPMMIOPROC)pIOProc,
1402                                             dwFlags, MMIO_PROC_16);
1403 }
1404
1405 /**************************************************************************
1406  *                              mmioInstallIOProcA         [WINMM.120]
1407  */
1408 LPMMIOPROC WINAPI mmioInstallIOProcA(FOURCC fccIOProc,
1409                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1410 {
1411     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32A);
1412 }
1413
1414 /**************************************************************************
1415  *                              mmioInstallIOProcW         [WINMM.]
1416  */
1417 LPMMIOPROC WINAPI mmioInstallIOProcW(FOURCC fccIOProc,
1418                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1419 {
1420     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32W);
1421 }
1422
1423 /**************************************************************************
1424  *                              mmioSendMessage16       [MMSYSTEM.1222]
1425  */
1426 LRESULT WINAPI mmioSendMessage16(HMMIO16 hmmio, UINT16 uMessage,
1427                                  LPARAM lParam1, LPARAM lParam2)
1428 {
1429     LPWINE_MMIO         wm;
1430
1431     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1432
1433     if (uMessage < MMIOM_USER)
1434         return MMSYSERR_INVALPARAM;
1435
1436     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1437         return MMSYSERR_INVALHANDLE;
1438
1439     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_16);
1440 }
1441
1442 /**************************************************************************
1443  *                              mmioSendMessage         [WINMM.]
1444  */
1445 LRESULT WINAPI mmioSendMessage(HMMIO hmmio, UINT uMessage,
1446                                LPARAM lParam1, LPARAM lParam2)
1447 {
1448     LPWINE_MMIO         wm;
1449
1450     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1451
1452     if (uMessage < MMIOM_USER)
1453         return MMSYSERR_INVALPARAM;
1454
1455     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1456         return MMSYSERR_INVALHANDLE;
1457
1458     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_32A);
1459 }
1460
1461 /**************************************************************************
1462  *                              mmioDescend             [MMSYSTEM.1223]
1463  */
1464 UINT WINAPI mmioDescend(HMMIO hmmio, LPMMCKINFO lpck,
1465                         const MMCKINFO* lpckParent, UINT uFlags)
1466 {
1467     DWORD               dwOldPos;
1468     FOURCC              srchCkId;
1469     FOURCC              srchType;
1470
1471
1472     TRACE("(%04X, %p, %p, %04X);\n", hmmio, lpck, lpckParent, uFlags);
1473
1474     if (lpck == NULL)
1475         return MMSYSERR_INVALPARAM;
1476
1477     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1478     TRACE("dwOldPos=%ld\n", dwOldPos);
1479
1480     if (lpckParent != NULL) {
1481         TRACE("seek inside parent at %ld !\n", lpckParent->dwDataOffset);
1482         /* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
1483         if (dwOldPos < lpckParent->dwDataOffset ||
1484             dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
1485             WARN("outside parent chunk\n");
1486             return MMIOERR_CHUNKNOTFOUND;
1487         }
1488     }
1489
1490     /* The SDK docu says 'ckid' is used for all cases. Real World
1491      * examples disagree -Marcus,990216.
1492      */
1493
1494     srchType = 0;
1495     /* find_chunk looks for 'ckid' */
1496     if (uFlags & MMIO_FINDCHUNK)
1497         srchCkId = lpck->ckid;
1498     /* find_riff and find_list look for 'fccType' */
1499     if (uFlags & MMIO_FINDLIST) {
1500         srchCkId = FOURCC_LIST;
1501         srchType = lpck->fccType;
1502     }
1503     if (uFlags & MMIO_FINDRIFF) {
1504         srchCkId = FOURCC_RIFF;
1505         srchType = lpck->fccType;
1506     }
1507
1508     if (uFlags & (MMIO_FINDCHUNK|MMIO_FINDLIST|MMIO_FINDRIFF)) {
1509         TRACE("searching for %.4s.%.4s\n",
1510               (LPSTR)&srchCkId,
1511               srchType?(LPSTR)&srchType:"any ");
1512
1513         while (TRUE) {
1514             LONG ix;
1515
1516             ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
1517             if (ix < 2*sizeof(DWORD)) {
1518                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1519                 WARN("return ChunkNotFound\n");
1520                 return MMIOERR_CHUNKNOTFOUND;
1521             }
1522             lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1523             if (ix < lpck->dwDataOffset - dwOldPos) {
1524                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1525                 WARN("return ChunkNotFound\n");
1526                 return MMIOERR_CHUNKNOTFOUND;
1527             }
1528             TRACE("ckid=%.4s fcc=%.4s cksize=%08lX !\n",
1529                   (LPSTR)&lpck->ckid,
1530                   srchType?(LPSTR)&lpck->fccType:"<na>",
1531                   lpck->cksize);
1532             if ((srchCkId == lpck->ckid) &&
1533                 (!srchType || (srchType == lpck->fccType))
1534                 )
1535                 break;
1536
1537             dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
1538             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1539         }
1540     } else {
1541         /* FIXME: unverified, does it do this? */
1542         /* NB: This part is used by WAVE_mciOpen, among others */
1543         if (mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD)) < 3 * sizeof(DWORD)) {
1544             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1545             WARN("return ChunkNotFound 2nd\n");
1546             return MMIOERR_CHUNKNOTFOUND;
1547         }
1548         lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1549     }
1550     lpck->dwFlags = 0;
1551     /* If we were looking for RIFF/LIST chunks, the final file position
1552      * is after the chunkid. If we were just looking for the chunk
1553      * it is after the cksize. So add 4 in RIFF/LIST case.
1554      */
1555     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1556         mmioSeek(hmmio, lpck->dwDataOffset + sizeof(DWORD), SEEK_SET);
1557     else
1558         mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
1559     TRACE("lpck: ckid=%.4s, cksize=%ld, dwDataOffset=%ld fccType=%08lX (%.4s)!\n",
1560           (LPSTR)&lpck->ckid, lpck->cksize, lpck->dwDataOffset,
1561           lpck->fccType, srchType?(LPSTR)&lpck->fccType:"");
1562     return 0;
1563 }
1564
1565 /**************************************************************************
1566  *                              mmioDescend16           [MMSYSTEM.1223]
1567  */
1568 UINT16 WINAPI mmioDescend16(HMMIO16 hmmio, LPMMCKINFO lpck,
1569                             const MMCKINFO* lpckParent, UINT16 uFlags)
1570 {
1571     return mmioDescend(hmmio, lpck, lpckParent, uFlags);
1572 }
1573
1574 /**************************************************************************
1575  *                              mmioAscend              [WINMM.113]
1576  */
1577 UINT WINAPI mmioAscend(HMMIO hmmio, LPMMCKINFO lpck, UINT uFlags)
1578 {
1579     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1580
1581     if (lpck->dwFlags & MMIO_DIRTY) {
1582         DWORD   dwOldPos, dwNewSize, dwSizePos;
1583
1584         TRACE("chunk is marked MMIO_DIRTY, correcting chunk size\n");
1585         dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1586         TRACE("dwOldPos=%ld\n", dwOldPos);
1587         dwNewSize = dwOldPos - lpck->dwDataOffset;
1588         if (dwNewSize != lpck->cksize) {
1589             TRACE("dwNewSize=%ld\n", dwNewSize);
1590             lpck->cksize = dwNewSize;
1591
1592             dwSizePos = lpck->dwDataOffset - sizeof(DWORD);
1593             TRACE("dwSizePos=%ld\n", dwSizePos);
1594
1595             mmioSeek(hmmio, dwSizePos, SEEK_SET);
1596             mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
1597         }
1598     }
1599
1600     mmioSeek(hmmio, lpck->dwDataOffset + ((lpck->cksize + 1) & ~1), SEEK_SET);
1601
1602     return 0;
1603 }
1604
1605 /**************************************************************************
1606  *                              mmioAscend              [MMSYSTEM.1224]
1607  */
1608 UINT16 WINAPI mmioAscend16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1609 {
1610     return mmioAscend(hmmio,lpck,uFlags);
1611 }
1612
1613 /**************************************************************************
1614  *                              mmioCreateChunk         [MMSYSTEM.1225]
1615  */
1616 UINT16 WINAPI mmioCreateChunk16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1617 {
1618     DWORD       dwOldPos;
1619     LONG        size;
1620     LONG        ix;
1621
1622     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1623
1624     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1625     TRACE("dwOldPos=%ld\n", dwOldPos);
1626
1627     if (uFlags == MMIO_CREATELIST)
1628         lpck->ckid = FOURCC_LIST;
1629     else if (uFlags == MMIO_CREATERIFF)
1630         lpck->ckid = FOURCC_RIFF;
1631
1632     TRACE("ckid=%08lX\n", lpck->ckid);
1633
1634     size = 2 * sizeof(DWORD);
1635     lpck->dwDataOffset = dwOldPos + size;
1636
1637     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1638         size += sizeof(DWORD);
1639     lpck->dwFlags = MMIO_DIRTY;
1640
1641     ix = mmioWrite(hmmio, (LPSTR)lpck, size);
1642     TRACE("after mmioWrite ix = %ld req = %ld, errno = %d\n",ix, size, errno);
1643     if (ix < size) {
1644         mmioSeek(hmmio, dwOldPos, SEEK_SET);
1645         WARN("return CannotWrite\n");
1646         return MMIOERR_CANNOTWRITE;
1647     }
1648
1649     return 0;
1650 }
1651
1652 /**************************************************************************
1653  *                      mmioCreateChunk                         [WINMM.115]
1654  */
1655 UINT WINAPI mmioCreateChunk(HMMIO hmmio, MMCKINFO* lpck, UINT uFlags)
1656 {
1657     return mmioCreateChunk16(hmmio, lpck, uFlags);
1658 }
1659
1660 /**************************************************************************
1661  *                              mmioRename              [MMSYSTEM.1226]
1662  */
1663 UINT16 WINAPI mmioRename16(LPCSTR szFileName, LPCSTR szNewFileName,
1664                            MMIOINFO16* lpmmioinfo, DWORD dwRenameFlags)
1665 {
1666     UINT16              result = MMSYSERR_ERROR;
1667     LPMMIOPROC16        ioProc;
1668
1669     TRACE("('%s', '%s', %p, %08lX);\n",
1670           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1671
1672     /* If both params are NULL, then parse the file name */
1673     if (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1674         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1675
1676     /* Handle any unhandled/error case from above. Assume DOS file */
1677     if (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1678         ioProc = (LPMMIOPROC16)mmioDosIOProc;
1679     /* if just the four character code is present, look up IO proc */
1680     else if (lpmmioinfo->pIOProc == NULL)
1681         ioProc = mmioInstallIOProc16(lpmmioinfo->fccIOProc, NULL, MMIO_FINDPROC);
1682     else
1683         ioProc = lpmmioinfo->pIOProc;
1684
1685     /* FIXME: ioProc is likely a segmented address, thus needing a
1686      * thunk somewhere. The main issue is that Wine's current thunking
1687      * 32 to 16 only supports pascal calling convention
1688      */
1689     if (ioProc)
1690         result = (ioProc)(0, MMIOM_RENAME,
1691                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1692
1693     return result;
1694 }
1695
1696 /**************************************************************************
1697  *                              mmioRenameA                     [WINMM.125]
1698  */
1699 UINT WINAPI mmioRenameA(LPCSTR szFileName, LPCSTR szNewFileName,
1700                         MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1701 {
1702     UINT        result = MMSYSERR_ERROR;
1703     LPMMIOPROC  ioProc;
1704
1705     TRACE("('%s', '%s', %p, %08lX);\n",
1706           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1707
1708     /* If both params are NULL, then parse the file name */
1709     if (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1710         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1711
1712     /* Handle any unhandled/error case from above. Assume DOS file */
1713     if (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1714         ioProc = (LPMMIOPROC)mmioDosIOProc;
1715     /* if just the four character code is present, look up IO proc */
1716     else if (lpmmioinfo->pIOProc == NULL)
1717         ioProc = MMIO_InstallIOProc(lpmmioinfo->fccIOProc, NULL,
1718                                     MMIO_FINDPROC, MMIO_PROC_32A);
1719     else
1720         ioProc = lpmmioinfo->pIOProc;
1721
1722     if (ioProc)
1723         result = (ioProc)(0, MMIOM_RENAME,
1724                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1725
1726     return result;
1727 }
1728
1729 /**************************************************************************
1730  *                              mmioRenameW                     [WINMM.126]
1731  */
1732 UINT WINAPI mmioRenameW(LPCWSTR szFileName, LPCWSTR szNewFileName,
1733                         MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1734 {
1735     LPSTR       szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
1736     LPSTR       sznFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szNewFileName);
1737     UINT        ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwRenameFlags);
1738
1739     HeapFree(GetProcessHeap(),0,szFn);
1740     HeapFree(GetProcessHeap(),0,sznFn);
1741     return ret;
1742 }