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  *      + optimization of internal buffers (seg / lin)
  14  *      + even in 32 bit only, a seg ptr IO buffer is allocated (after this is
  15  *        fixed, we'll have a proper 32/16 separation)
  16  *      + thread safeness
  17  *      + rename operation is broken
  18  */
  19
  20 #include <ctype.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <errno.h>
  24 #include <assert.h>
  25
  26 #include "mmsystem.h"
  27 #include "windef.h"
  28
  29 #include "wine/mmsystem16.h"
  30 #include "wine/winbase16.h"
  31 #include "heap.h"
  32 #include "winemm.h"
  33
  34 #include "debugtools.h"
  35
  36 DEFAULT_DEBUG_CHANNEL(mmio);
  37
  38 /**************************************************************************
  39  *                      mmioDosIOProc                           [internal]
  40  */
  41 static LRESULT CALLBACK mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
  42                                       LPARAM lParam1, LPARAM lParam2)
  43 {
  44     LRESULT     ret = MMSYSERR_NOERROR;
  45
  46     TRACE("(%p, %X, %ld, %ld);\n", lpmmioinfo, uMessage, lParam1, lParam2);
  47
  48     switch (uMessage) {
  49     case MMIOM_OPEN:
  50         {
  51             /* Parameters:
  52              * lParam1 = szFileName parameter from mmioOpen
  53              * lParam2 = reserved (we use it for 16-bitness)
  54              * Returns: zero on success, error code on error
  55              * NOTE: lDiskOffset automatically set to zero
  56              */
  57             OFSTRUCT ofs;
  58             LPCSTR szFileName = (LPCSTR)lParam1;
  59
  60             if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
  61                 FIXME("MMIO_GETTEMP not implemented\n");
  62                 return MMIOERR_CANNOTOPEN;
  63             }
  64
  65             /* if filename NULL, assume open file handle in adwInfo[0] */
  66             if (!szFileName) {
  67                 if (lParam2)
  68                     lpmmioinfo->adwInfo[0] = DosFileHandleToWin32Handle(lpmmioinfo->adwInfo[0]);
  69                 break;
  70             }
  71
  72             lpmmioinfo->adwInfo[0] = (DWORD)OpenFile(szFileName, &ofs,
  73                                                      lpmmioinfo->dwFlags);
  74             if (lpmmioinfo->adwInfo[0] == -1)
  75                 ret = MMIOERR_CANNOTOPEN;
  76         }
  77         break;
  78
  79     case MMIOM_CLOSE:
  80         /* Parameters:
  81          * lParam1 = wFlags parameter from mmioClose
  82          * lParam2 = unused
  83          * Returns: zero on success, error code on error
  84          */
  85         if (!(lParam1 & MMIO_FHOPEN))
  86             _lclose((HFILE)lpmmioinfo->adwInfo[0]);
  87         break;
  88
  89     case MMIOM_READ:
  90         /* Parameters:
  91          * lParam1 = huge pointer to read buffer
  92          * lParam2 = number of bytes to read
  93          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
  94          *         in wErrorRet)
  95          */
  96         ret = _lread((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
  97         if (ret != -1)
  98             lpmmioinfo->lDiskOffset += ret;
  99
 100         break;
 101
 102     case MMIOM_WRITE:
 103     case MMIOM_WRITEFLUSH:
 104         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 105
 106         /* Parameters:
 107          * lParam1 = huge pointer to write buffer
 108          * lParam2 = number of bytes to write
 109          * Returns: number of bytes written, -1 for error (error code in
 110          *              wErrorRet)
 111          */
 112         ret = _hwrite((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
 113         if (ret != -1)
 114             lpmmioinfo->lDiskOffset += ret;
 115         break;
 116
 117     case MMIOM_SEEK:
 118         /* Parameters:
 119          * lParam1 = new position
 120          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 121          * Returns: new file postion, -1 on error
 122          */
 123         ret = _llseek((HFILE)lpmmioinfo->adwInfo[0], (LONG)lParam1, (LONG)lParam2);
 124         if (ret != -1)
 125             lpmmioinfo->lDiskOffset = ret;
 126         return ret;
 127
 128     case MMIOM_RENAME:
 129         /* Parameters:
 130          * lParam1 = old name
 131          * lParam2 = new name
 132          * Returns: zero on success, non-zero on failure
 133          */
 134          if (!MoveFileA((const char*)lParam1, (const char*)lParam2))
 135              ret = MMIOERR_FILENOTFOUND;
 136          break;
 137
 138     default:
 139         FIXME("unexpected message %u\n", uMessage);
 140         return 0;
 141     }
 142
 143     return ret;
 144 }
 145
 146 /**************************************************************************
 147  *                      mmioMemIOProc                           [internal]
 148  */
 149 static LRESULT CALLBACK mmioMemIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
 150                                       LPARAM lParam1, LPARAM lParam2)
 151 {
 152     TRACE("(%p,0x%04x,0x%08lx,0x%08lx)\n", lpmmioinfo, uMessage, lParam1, lParam2);
 153
 154     switch (uMessage) {
 155
 156     case MMIOM_OPEN:
 157         /* Parameters:
 158          * lParam1 = filename (must be NULL)
 159          * lParam2 = reserved (we use it for 16-bitness)
 160          * Returns: zero on success, error code on error
 161          * NOTE: lDiskOffset automatically set to zero
 162          */
 163         /* FIXME: io proc shouldn't change it */
 164         if (!(lpmmioinfo->dwFlags & MMIO_CREATE))
 165             lpmmioinfo->pchEndRead = lpmmioinfo->pchEndWrite;
 166         return 0;
 167
 168     case MMIOM_CLOSE:
 169         /* Parameters:
 170          * lParam1 = wFlags parameter from mmioClose
 171          * lParam2 = unused
 172          * Returns: zero on success, error code on error
 173          */
 174         return 0;
 175
 176     case MMIOM_READ:
 177         /* Parameters:
 178          * lParam1 = huge pointer to read buffer
 179          * lParam2 = number of bytes to read
 180          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
 181          *         in wErrorRet)
 182          * NOTE: lDiskOffset should be updated
 183          */
 184         FIXME("MMIOM_READ on memory files should not occur, buffer may be lost!\n");
 185         return 0;
 186
 187     case MMIOM_WRITE:
 188     case MMIOM_WRITEFLUSH:
 189         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 190
 191         /* Parameters:
 192          * lParam1 = huge pointer to write buffer
 193          * lParam2 = number of bytes to write
 194          * Returns: number of bytes written, -1 for error (error code in
 195          *              wErrorRet)
 196          * NOTE: lDiskOffset should be updated
 197          */
 198         FIXME("MMIOM_WRITE on memory files should not occur, buffer may be lost!\n");
 199         return 0;
 200
 201     case MMIOM_SEEK:
 202         /* Parameters:
 203          * lParam1 = new position
 204          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 205          * Returns: new file postion, -1 on error
 206          * NOTE: lDiskOffset should be updated
 207          */
 208         FIXME("MMIOM_SEEK on memory files should not occur, buffer may be lost!\n");
 209         return -1;
 210
 211     default:
 212         FIXME("unexpected message %u\n", uMessage);
 213         return 0;
 214     }
 215
 216     return 0;
 217 }
 218
 219
 220 enum mmioProcType {MMIO_PROC_16,MMIO_PROC_32A,MMIO_PROC_32W};
 221
 222 struct IOProcList
 223 {
 224     struct IOProcList*pNext;       /* Next item in linked list */
 225     FOURCC            fourCC;      /* four-character code identifying IOProc */
 226     LPMMIOPROC        pIOProc;     /* pointer to IProc */
 227     enum mmioProcType type;        /* 16, 32A or 32W */
 228     int               count;       /* number of objects linked to it */
 229 };
 230
 231 /* This array will be the entire list for most apps */
 232
 233 static struct IOProcList defaultProcs[] = {
 234     {&defaultProcs[1], FOURCC_DOS, (LPMMIOPROC)mmioDosIOProc, MMIO_PROC_32A, 0},
 235     {NULL,             FOURCC_MEM, (LPMMIOPROC)mmioMemIOProc, MMIO_PROC_32A, 0},
 236 };
 237
 238 static struct IOProcList*       pIOProcListAnchor = &defaultProcs[0];
 239
 240 /****************************************************************
 241  *              MMIO_FindProcNode                       [INTERNAL]
 242  *
 243  * Finds the ProcList node associated with a given FOURCC code.
 244  */
 245 static struct IOProcList*       MMIO_FindProcNode(FOURCC fccIOProc)
 246 {
 247     struct IOProcList*  pListNode;
 248
 249     for (pListNode = pIOProcListAnchor; pListNode; pListNode = pListNode->pNext) {
 250         if (pListNode->fourCC == fccIOProc) {
 251             return pListNode;
 252         }
 253     }
 254     return NULL;
 255 }
 256
 257 /****************************************************************
 258  *              MMIO_InstallIOProc                      [INTERNAL]
 259  */
 260 static LPMMIOPROC MMIO_InstallIOProc(FOURCC fccIOProc, LPMMIOPROC pIOProc,
 261                                      DWORD dwFlags, enum mmioProcType type)
 262 {
 263     LPMMIOPROC          lpProc = NULL;
 264     struct IOProcList*  pListNode;
 265     struct IOProcList** ppListNode;
 266
 267     TRACE("(%ld, %p, %08lX, %i)\n", fccIOProc, pIOProc, dwFlags, type);
 268
 269     if (dwFlags & MMIO_GLOBALPROC)
 270         FIXME("Global procedures not implemented\n");
 271
 272     /* just handle the known procedures for now */
 273     switch (dwFlags & (MMIO_INSTALLPROC|MMIO_REMOVEPROC|MMIO_FINDPROC)) {
 274     case MMIO_INSTALLPROC:
 275         /* Create new entry for the IOProc list */
 276         pListNode = HeapAlloc(GetProcessHeap(), 0, sizeof(*pListNode));
 277         if (pListNode) {
 278             /* Fill in this node */
 279             pListNode->fourCC = fccIOProc;
 280             pListNode->pIOProc = pIOProc;
 281             pListNode->type = type;
 282             pListNode->count = 0;
 283
 284             /* Stick it on the end of the list */
 285             pListNode->pNext = pIOProcListAnchor;
 286             pIOProcListAnchor = pListNode;
 287
 288             /* Return this IOProc - that's how the caller knows we succeeded */
 289             lpProc = pIOProc;
 290         }
 291         break;
 292
 293     case MMIO_REMOVEPROC:
 294         /*
 295          * Search for the node that we're trying to remove - note
 296          * that this method won't find the first item on the list, but
 297          * since the first two items on this list are ones we won't
 298          * let the user delete anyway, that's okay
 299          */
 300         ppListNode = &pIOProcListAnchor;
 301         while ((*ppListNode) && (*ppListNode)->fourCC != fccIOProc)
 302             ppListNode = &((*ppListNode)->pNext);
 303
 304         if (*ppListNode) { /* found it */
 305             /* FIXME: what should be done if an open mmio object uses this proc ?
 306              * shall we return an error, nuke the mmio object ?
 307              */
 308             if ((*ppListNode)->count) {
 309                 ERR("Cannot remove a mmIOProc while in use\n");
 310                 break;
 311             }
 312             /* remove it, but only if it isn't builtin */
 313             if ((*ppListNode) >= defaultProcs &&
 314                 (*ppListNode) < defaultProcs + sizeof(defaultProcs)) {
 315                 WARN("Tried to remove built-in mmio proc. Skipping\n");
 316             } else {
 317                 /* Okay, nuke it */
 318                 struct IOProcList*  ptmpNode = *ppListNode;
 319                 lpProc = (*ppListNode)->pIOProc;
 320                 *ppListNode = (*ppListNode)->pNext;
 321                 HeapFree(GetProcessHeap(), 0, ptmpNode);
 322             }
 323         }
 324         break;
 325
 326     case MMIO_FINDPROC:
 327         if ((pListNode = MMIO_FindProcNode(fccIOProc))) {
 328             lpProc = pListNode->pIOProc;
 329         }
 330         break;
 331     }
 332
 333     return lpProc;
 334 }
 335
 336 /****************************************************************
 337  *                      MMIO_Map32To16                  [INTERNAL]
 338  */
 339 static LRESULT  MMIO_Map32To16(DWORD wMsg, LPARAM* lp1, LPARAM* lp2)
 340 {
 341     switch (wMsg) {
 342     case MMIOM_OPEN:
 343         {
 344             char *lp = SEGPTR_STRDUP( (LPSTR)*lp1 );
 345             if (!lp) return MMSYSERR_NOMEM;
 346             *lp1 = SEGPTR_GET(lp);
 347         }
 348         break;
 349     case MMIOM_CLOSE:
 350     case MMIOM_SEEK:
 351         /* nothing to do */
 352         break;
 353     case MMIOM_READ:
 354     case MMIOM_WRITE:
 355     case MMIOM_WRITEFLUSH:
 356         {
 357             void*       lp = SEGPTR_ALLOC(*lp2);
 358             if (!lp) return MMSYSERR_NOMEM;
 359
 360             if (wMsg != MMIOM_READ)
 361                 memcpy(lp, (void*)*lp1, *lp2);
 362             *lp1 = SEGPTR_GET(lp);
 363         }
 364         break;
 365     default:
 366         TRACE("Not a mappable message (%ld)\n", wMsg);
 367     }
 368     return MMSYSERR_NOERROR;
 369 }
 370
 371 /****************************************************************
 372  *              MMIO_UnMap32To16                        [INTERNAL]
 373  */
 374 static LRESULT  MMIO_UnMap32To16(DWORD wMsg, LPARAM lParam1, LPARAM lParam2,
 375                                  LPARAM lp1, LPARAM lp2)
 376 {
 377     switch (wMsg) {
 378     case MMIOM_OPEN:
 379         if (!SEGPTR_FREE((void*)lp1)) {
 380             FIXME("bad free line=%d\n", __LINE__);
 381         }
 382         break;
 383     case MMIOM_CLOSE:
 384     case MMIOM_SEEK:
 385         /* nothing to do */
 386         break;
 387     case MMIOM_READ:
 388         memcpy((void*)lParam1, MapSL(lp1), lp2);
 389         /* fall through */
 390     case MMIOM_WRITE:
 391     case MMIOM_WRITEFLUSH:
 392         if (!SEGPTR_FREE(MapSL(lp1))) {
 393             FIXME("bad free line=%d\n", __LINE__);
 394         }
 395         break;
 396     default:
 397         TRACE("Not a mappable message (%ld)\n", wMsg);
 398     }
 399     return MMSYSERR_NOERROR;
 400 }
 401
 402 /****************************************************************
 403  *              MMIO_GenerateInfoForIOProc              [INTERNAL]
 404  */
 405 static  SEGPTR  MMIO_GenerateInfoForIOProc(const WINE_MMIO* wm)
 406 {
 407     LPMMIOINFO16 mmioInfo16 = SEGPTR_ALLOC(sizeof(MMIOINFO16));
 408
 409     memset(mmioInfo16, 0, sizeof(MMIOINFO16));
 410
 411     mmioInfo16->lDiskOffset = wm->info.lDiskOffset;
 412     mmioInfo16->adwInfo[0]  = wm->info.adwInfo[0];
 413     mmioInfo16->adwInfo[1]  = wm->info.adwInfo[1];
 414     mmioInfo16->adwInfo[2]  = wm->info.adwInfo[2];
 415     mmioInfo16->adwInfo[3]  = wm->info.adwInfo[3];
 416
 417     return SEGPTR_GET(mmioInfo16);
 418 }
 419
 420 /****************************************************************
 421  *              MMIO_UpdateInfoForIOProc                [INTERNAL]
 422  */
 423 static  LRESULT MMIO_UpdateInfoForIOProc(WINE_MMIO* wm, SEGPTR segmmioInfo16)
 424 {
 425     MMIOINFO16* mmioInfo16 = MapSL(segmmioInfo16);
 426
 427     wm->info.lDiskOffset = mmioInfo16->lDiskOffset;
 428     wm->info.adwInfo[0]  = mmioInfo16->adwInfo[0];
 429     wm->info.adwInfo[1]  = mmioInfo16->adwInfo[1];
 430     wm->info.adwInfo[2]  = mmioInfo16->adwInfo[2];
 431     wm->info.adwInfo[3]  = mmioInfo16->adwInfo[3];
 432
 433     if (!SEGPTR_FREE(mmioInfo16)) FIXME("bad free\n");
 434
 435     return MMSYSERR_NOERROR;
 436 }
 437
 438 /****************************************************************
 439  *              MMIO_SendMessage                        [INTERNAL]
 440  */
 441 static LRESULT  MMIO_SendMessage(LPWINE_MMIO wm, DWORD wMsg, LPARAM lParam1,
 442                                  LPARAM lParam2, enum mmioProcType type)
 443 {
 444     LRESULT             result;
 445     SEGPTR              segmmioInfo16;
 446     LPARAM              lp1 = lParam1, lp2 = lParam2;
 447
 448     if (!wm->ioProc || !wm->info.pIOProc) {
 449         ERR("brrr\n");
 450         result = MMSYSERR_INVALPARAM;
 451     }
 452
 453     switch (wm->ioProc->type) {
 454     case MMIO_PROC_16:
 455         segmmioInfo16 = MMIO_GenerateInfoForIOProc(wm);
 456         if (wm->ioProc->type != type) {
 457             /* map (lParam1, lParam2) into (lp1, lp2) 32=>16 */
 458             if ((result = MMIO_Map32To16(wMsg, &lp1, &lp2)) != MMSYSERR_NOERROR)
 459                 return result;
 460         }
 461         /* FIXME: is wm->info.pIOProc a segmented or a linear address ?
 462          * sounds to me it's a segmented one, should use a thunk somewhere
 463          */
 464         result = ((LPMMIOPROC16)wm->info.pIOProc)((LPSTR)segmmioInfo16,
 465                                                   wMsg, lp1, lp2);
 466
 467         if (wm->ioProc->type != type) {
 468             MMIO_UnMap32To16(wMsg, lParam1, lParam2, lp1, lp2);
 469         }
 470         MMIO_UpdateInfoForIOProc(wm, segmmioInfo16);
 471         break;
 472     case MMIO_PROC_32A:
 473     case MMIO_PROC_32W:
 474         if (wm->ioProc->type != type) {
 475             /* map (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 476             WARN("NIY\n");
 477         }
 478         result = (wm->info.pIOProc)((LPSTR)&wm->info, wMsg, lp1, lp2);
 479
 480 #if 0
 481         if (wm->ioProc->type != type) {
 482             /* unmap (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 483         }
 484 #endif
 485         break;
 486     default:
 487         FIXME("Internal error\n");
 488         result = MMSYSERR_ERROR;
 489     }
 490
 491     return result;
 492 }
 493
 494 /**************************************************************************
 495  *                              MMIO_ParseExt                   [internal]
 496  *
 497  * Parses a filename for the extension.
 498  *
 499  * RETURNS
 500  *  The FOURCC code for the extension if found, else 0.
 501  */
 502 static FOURCC MMIO_ParseExt(LPCSTR szFileName)
 503 {
 504     /* Filenames are of the form file.ext+ABC
 505        FIXME: What if a '+' is part of the file name?
 506        For now, we take the last '+' present */
 507
 508     FOURCC ret = 0;
 509
 510     /* Note that ext{Start,End} point to the . and + respectively */
 511     LPSTR extEnd;
 512
 513     TRACE("(%s)\n",debugstr_a(szFileName));
 514
 515     if (!szFileName)
 516         return ret;
 517     extEnd = strrchr(szFileName,'+');
 518     if (extEnd) {
 519         /* Need to parse to find the extension */
 520         LPSTR extStart;
 521
 522         extStart = extEnd;
 523         while (extStart >= szFileName && extStart[0] != '.') {
 524             extStart--;
 525         }
 526
 527         if (extStart < szFileName) {
 528             ERR("+ but no . in szFileName: %s\n", debugstr_a(szFileName));
 529         } else {
 530             CHAR ext[5];
 531
 532             if (extEnd - extStart - 1 > 4)
 533                 WARN("Extension length > 4\n");
 534             lstrcpynA(ext,extStart + 1,min(extEnd-extStart,5));
 535             TRACE("Got extension: %s\n", debugstr_a(ext));
 536             /* FOURCC codes identifying file-extensions must be uppercase */
 537             ret = mmioStringToFOURCCA(ext, MMIO_TOUPPER);
 538         }
 539     }
 540     return ret;
 541 }
 542
 543 /**************************************************************************
 544  *                              MMIO_Get                        [internal]
 545  *
 546  * Retrieves the mmio object from current process
 547  */
 548 static  LPWINE_MMIO     MMIO_Get(LPWINE_MM_IDATA iData, HMMIO h)
 549 {
 550     LPWINE_MMIO         wm = NULL;
 551
 552     if (!iData) iData = MULTIMEDIA_GetIData();
 553
 554     EnterCriticalSection(&iData->cs);
 555     for (wm = iData->lpMMIO; wm; wm = wm->lpNext) {
 556         if (wm->info.hmmio == h)
 557             break;
 558     }
 559     LeaveCriticalSection(&iData->cs);
 560     return wm;
 561 }
 562
 563 /**************************************************************************
 564  *                              MMIO_Create                     [internal]
 565  *
 566  * Creates an internal representation for a mmio instance
 567  */
 568 static  LPWINE_MMIO             MMIO_Create(void)
 569 {
 570     static      WORD    MMIO_counter = 0;
 571     LPWINE_MMIO         wm;
 572     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 573
 574     wm = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINE_MMIO));
 575     if (wm) {
 576         EnterCriticalSection(&iData->cs);
 577         while (MMIO_Get(iData, ++MMIO_counter));
 578         wm->info.hmmio = MMIO_counter;
 579         wm->lpNext = iData->lpMMIO;
 580         iData->lpMMIO = wm;
 581         LeaveCriticalSection(&iData->cs);
 582     }
 583     return wm;
 584 }
 585
 586 /**************************************************************************
 587  *                              MMIO_Destroy                    [internal]
 588  *-
 589  * Destroys an internal representation for a mmio instance
 590  */
 591 static  BOOL            MMIO_Destroy(LPWINE_MMIO wm)
 592 {
 593     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 594     LPWINE_MMIO*        m;
 595
 596     EnterCriticalSection(&iData->cs);
 597     /* search for the matching one... */
 598     m = &(iData->lpMMIO);
 599     while (*m && *m != wm) m = &(*m)->lpNext;
 600     /* ...and destroy */
 601     if (*m) {
 602         *m = (*m)->lpNext;
 603         HeapFree(GetProcessHeap(), 0, wm);
 604         wm = NULL;
 605     }
 606     LeaveCriticalSection(&iData->cs);
 607     return wm ? FALSE : TRUE;
 608 }
 609
 610 /****************************************************************
 611  *                      MMIO_Flush                      [INTERNAL]
 612  */
 613 static  LRESULT MMIO_Flush(WINE_MMIO* wm, UINT uFlags)
 614 {
 615     if (wm->info.cchBuffer && (wm->info.fccIOProc != FOURCC_MEM)) {
 616         /* not quite sure what to do here, but I'll guess */
 617         if (wm->info.dwFlags & MMIO_DIRTY) {
 618             MMIO_SendMessage(wm, MMIOM_SEEK, wm->info.lBufOffset,
 619                              SEEK_SET, MMIO_PROC_32A);
 620             MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)wm->info.pchBuffer,
 621                              wm->info.pchNext - wm->info.pchBuffer, MMIO_PROC_32A);
 622         }
 623         if (uFlags & MMIO_EMPTYBUF)
 624             wm->info.pchNext = wm->info.pchEndRead = wm->info.pchBuffer;
 625     }
 626     wm->info.dwFlags &= ~MMIO_DIRTY;
 627
 628     return 0;
 629 }
 630
 631 /***************************************************************************
 632  *                      MMIO_GrabNextBuffer                     [INTERNAL]
 633  */
 634 static LONG     MMIO_GrabNextBuffer(LPWINE_MMIO wm, int for_read)
 635 {
 636     LONG        size = wm->info.cchBuffer;
 637
 638     TRACE("bo=%lx do=%lx of=%lx\n",
 639           wm->info.lBufOffset, wm->info.lDiskOffset,
 640           MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A));
 641
 642     wm->info.lBufOffset = wm->info.lDiskOffset;
 643     wm->info.pchNext = wm->info.pchBuffer;
 644     wm->info.pchEndRead = wm->info.pchBuffer;
 645     wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
 646
 647     if (for_read) {
 648         size = MMIO_SendMessage(wm, MMIOM_READ, (LPARAM)wm->info.pchBuffer,
 649                                 size, MMIO_PROC_32A);
 650         if (size > 0)
 651             wm->info.pchEndRead += size;
 652     }
 653
 654     wm->bBufferLoaded = TRUE;
 655     return size;
 656 }
 657
 658 /***************************************************************************
 659  *                      MMIO_SetBuffer                          [INTERNAL]
 660  */
 661 static  UINT    MMIO_SetBuffer(WINE_MMIO* wm, void* pchBuffer, LONG cchBuffer,
 662                                UINT uFlags, BOOL bFrom32)
 663 {
 664     TRACE("(%p %p %ld %u %d)\n", wm, pchBuffer, cchBuffer, uFlags, bFrom32);
 665
 666     if (uFlags)                 return MMSYSERR_INVALPARAM;
 667     if (cchBuffer > 0xFFFF)
 668         WARN("Untested handling of huge mmio buffers (%ld >= 64k)\n", cchBuffer);
 669
 670     if (MMIO_Flush(wm, 0) != 0)
 671         return MMIOERR_CANNOTWRITE;
 672
 673     if ((!cchBuffer || pchBuffer) && (wm->info.dwFlags & MMIO_ALLOCBUF)) {
 674         GlobalUnlock16(wm->hMem);
 675         GlobalFree16(wm->hMem);
 676         wm->info.dwFlags &= ~MMIO_ALLOCBUF;
 677     }
 678     if (pchBuffer) {
 679         if (bFrom32) {
 680             wm->info.pchBuffer = pchBuffer;
 681             wm->buffer16 = 0;
 682         } else {
 683             wm->info.pchBuffer = MapSL((SEGPTR)pchBuffer);
 684             wm->buffer16 = (SEGPTR)pchBuffer;
 685         }
 686         wm->hMem = 0;
 687     } else if (cchBuffer && (wm->info.dwFlags & MMIO_ALLOCBUF)) {
 688         HGLOBAL16 hNewBuf;
 689         GlobalUnlock16(wm->hMem);
 690         hNewBuf = GlobalReAlloc16(wm->hMem, cchBuffer, 0);
 691         if (!hNewBuf) {
 692             /* FIXME: this assumes the memory block didn't move */
 693             GlobalLock16(wm->hMem);
 694             return MMIOERR_OUTOFMEMORY;
 695         }
 696         wm->hMem = hNewBuf;
 697     } else if (cchBuffer) {
 698         if (!(wm->hMem = GlobalAlloc16(GMEM_MOVEABLE, cchBuffer)))
 699             return MMIOERR_OUTOFMEMORY;
 700         wm->info.dwFlags |= MMIO_ALLOCBUF;
 701     } else {
 702         wm->info.pchBuffer = NULL;
 703         wm->hMem = 0;
 704         wm->buffer16 = 0;
 705     }
 706
 707     if (wm->hMem) {
 708         wm->buffer16 = K32WOWGlobalLock16(wm->hMem);
 709         wm->info.pchBuffer = MapSL(wm->buffer16);
 710     }
 711
 712     wm->info.cchBuffer = cchBuffer;
 713     wm->info.pchNext = wm->info.pchBuffer;
 714     wm->info.pchEndRead = wm->info.pchBuffer;
 715     wm->info.pchEndWrite = wm->info.pchBuffer + cchBuffer;
 716     wm->info.lBufOffset = 0;
 717     wm->bBufferLoaded = FALSE;
 718
 719     return 0;
 720 }
 721
 722 /**************************************************************************
 723  *                      MMIO_Open                               [internal]
 724  */
 725 static HMMIO MMIO_Open(LPSTR szFileName, MMIOINFO* refmminfo,
 726                        DWORD dwOpenFlags, enum mmioProcType type)
 727 {
 728     LPWINE_MMIO         wm;
 729
 730     TRACE("('%s', %p, %08lX, %d);\n", szFileName, refmminfo, dwOpenFlags, type);
 731
 732     if (dwOpenFlags & (MMIO_PARSE|MMIO_EXIST)) {
 733         char    buffer[MAX_PATH];
 734
 735         if (GetFullPathNameA(szFileName, sizeof(buffer), buffer, NULL) >= sizeof(buffer))
 736             return (HMMIO16)FALSE;
 737         if ((dwOpenFlags & MMIO_EXIST) && (GetFileAttributesA(buffer) == -1))
 738             return (HMMIO)FALSE;
 739         strcpy(szFileName, buffer);
 740         return (HMMIO)TRUE;
 741     }
 742
 743     if ((wm = MMIO_Create()) == NULL)
 744         return 0;
 745
 746     /* If both params are NULL, then parse the file name if available */
 747     if (refmminfo->fccIOProc == 0 && refmminfo->pIOProc == NULL) {
 748         wm->info.fccIOProc = MMIO_ParseExt(szFileName);
 749         /* Handle any unhandled/error case. Assume DOS file */
 750         if (wm->info.fccIOProc == 0)
 751             wm->info.fccIOProc = FOURCC_DOS;
 752         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 753         wm->info.pIOProc = wm->ioProc->pIOProc;
 754         wm->bTmpIOProc = FALSE;
 755     }
 756     /* if just the four character code is present, look up IO proc */
 757     else if (refmminfo->pIOProc == NULL) {
 758         wm->info.fccIOProc = refmminfo->fccIOProc;
 759         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 760         wm->info.pIOProc = wm->ioProc->pIOProc;
 761         wm->bTmpIOProc = FALSE;
 762     }
 763     /* if IO proc specified, use it and specified four character code */
 764     else {
 765         wm->info.fccIOProc = refmminfo->fccIOProc;
 766         wm->info.pIOProc = refmminfo->pIOProc;
 767         MMIO_InstallIOProc(wm->info.fccIOProc, wm->info.pIOProc,
 768                            MMIO_INSTALLPROC, type);
 769         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 770         assert(wm->ioProc->pIOProc == refmminfo->pIOProc);
 771         wm->info.pIOProc = wm->ioProc->pIOProc;
 772         wm->bTmpIOProc = TRUE;
 773     }
 774
 775     wm->bBufferLoaded = FALSE;
 776     wm->ioProc->count++;
 777
 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         wm->bBufferLoaded = TRUE;
 789     } /* else => unbuffered, wm->info.pchBuffer == NULL */
 790
 791     /* see mmioDosIOProc for that one */
 792     wm->info.adwInfo[0] = refmminfo->adwInfo[0];
 793     wm->info.dwFlags = dwOpenFlags;
 794
 795     /* call IO proc to actually open file */
 796     refmminfo->wErrorRet = MMIO_SendMessage(wm, MMIOM_OPEN, (LPARAM)szFileName,
 797                                         type == MMIO_PROC_16, MMIO_PROC_32A);
 798
 799     if (refmminfo->wErrorRet == 0)
 800         return wm->info.hmmio;
 801  error1:
 802     if (wm->ioProc) wm->ioProc->count--;
 803  error2:
 804     MMIO_Destroy(wm);
 805     return 0;
 806 }
 807
 808 /**************************************************************************
 809  *                              mmioOpenW                       [WINMM.@]
 810  */
 811 HMMIO WINAPI mmioOpenW(LPWSTR szFileName, MMIOINFO* lpmmioinfo,
 812                        DWORD dwOpenFlags)
 813 {
 814     HMMIO       ret;
 815     LPSTR       szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
 816
 817     if (lpmmioinfo) {
 818         ret = MMIO_Open(szFn, lpmmioinfo, dwOpenFlags, MMIO_PROC_32W);
 819     } else {
 820         MMIOINFO        mmioinfo;
 821
 822         mmioinfo.fccIOProc = 0;
 823         mmioinfo.pIOProc = NULL;
 824         mmioinfo.pchBuffer = NULL;
 825         mmioinfo.cchBuffer = 0;
 826
 827         ret = MMIO_Open(szFn, &mmioinfo, dwOpenFlags, MMIO_PROC_32W);
 828     }
 829
 830     HeapFree(GetProcessHeap(), 0, szFn);
 831     return ret;
 832 }
 833
 834 /**************************************************************************
 835  *                              mmioOpenA                       [WINMM.@]
 836  */
 837 HMMIO WINAPI mmioOpenA(LPSTR szFileName, MMIOINFO* lpmmioinfo,
 838                        DWORD dwOpenFlags)
 839 {
 840     HMMIO       ret;
 841
 842     if (lpmmioinfo) {
 843         ret = MMIO_Open(szFileName, lpmmioinfo, dwOpenFlags, MMIO_PROC_32A);
 844     } else {
 845         MMIOINFO        mmioinfo;
 846
 847         mmioinfo.fccIOProc = 0;
 848         mmioinfo.pIOProc = NULL;
 849         mmioinfo.pchBuffer = NULL;
 850         mmioinfo.cchBuffer = 0;
 851
 852         ret = MMIO_Open(szFileName, &mmioinfo, dwOpenFlags, MMIO_PROC_32A);
 853     }
 854     return ret;
 855 }
 856
 857 /**************************************************************************
 858  *                              mmioOpen                [MMSYSTEM.1210]
 859  */
 860 HMMIO16 WINAPI mmioOpen16(LPSTR szFileName, MMIOINFO16* lpmmioinfo16,
 861                           DWORD dwOpenFlags)
 862 {
 863     HMMIO       ret;
 864     MMIOINFO    mmio;
 865
 866     if (lpmmioinfo16) {
 867         MMIOINFO        mmioinfo;
 868
 869         memset(&mmioinfo, 0, sizeof(mmioinfo));
 870
 871         mmioinfo.dwFlags     = lpmmioinfo16->dwFlags;
 872         mmioinfo.fccIOProc   = lpmmioinfo16->fccIOProc;
 873         mmioinfo.pIOProc     = (LPMMIOPROC)lpmmioinfo16->pIOProc;
 874         mmioinfo.cchBuffer   = lpmmioinfo16->cchBuffer;
 875         mmioinfo.pchBuffer   = lpmmioinfo16->pchBuffer;
 876         mmioinfo.adwInfo[0]  = lpmmioinfo16->adwInfo[0];
 877         mmioinfo.adwInfo[1]  = lpmmioinfo16->adwInfo[1];
 878         mmioinfo.adwInfo[2]  = lpmmioinfo16->adwInfo[2];
 879         mmioinfo.adwInfo[3]  = lpmmioinfo16->adwInfo[3];
 880
 881         ret = MMIO_Open(szFileName, &mmioinfo, dwOpenFlags, MMIO_PROC_16);
 882
 883         mmioGetInfo16(mmioinfo.hmmio, lpmmioinfo16, 0);
 884         lpmmioinfo16->wErrorRet = ret;
 885     } else {
 886         mmio.fccIOProc = 0;
 887         mmio.pIOProc = NULL;
 888         mmio.pchBuffer = NULL;
 889         mmio.cchBuffer = 0;
 890         ret = MMIO_Open(szFileName, &mmio, dwOpenFlags, FALSE);
 891     }
 892     return ret;
 893 }
 894
 895
 896 /**************************************************************************
 897  *                              mmioClose               [WINMM.@]
 898  */
 899 MMRESULT WINAPI mmioClose(HMMIO hmmio, UINT uFlags)
 900 {
 901     LPWINE_MMIO wm;
 902     MMRESULT    result;
 903
 904     TRACE("(%04X, %04X);\n", hmmio, uFlags);
 905
 906     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 907         return MMSYSERR_INVALHANDLE;
 908
 909     if ((result = MMIO_Flush(wm, 0)) != 0)
 910         return result;
 911
 912     result = MMIO_SendMessage(wm, MMIOM_CLOSE, uFlags, 0, MMIO_PROC_32A);
 913
 914     mmioSetBuffer(hmmio, NULL, 0, 0);
 915
 916     wm->ioProc->count--;
 917
 918     if (wm->bTmpIOProc)
 919         MMIO_InstallIOProc(wm->info.fccIOProc, NULL,
 920                            MMIO_REMOVEPROC, wm->ioProc->type);
 921
 922     MMIO_Destroy(wm);
 923
 924     return result;
 925 }
 926
 927 /**************************************************************************
 928  *                              mmioClose               [MMSYSTEM.1211]
 929  */
 930 MMRESULT16 WINAPI mmioClose16(HMMIO16 hmmio, UINT16 uFlags)
 931 {
 932     return mmioClose(hmmio, uFlags);
 933 }
 934
 935 /**************************************************************************
 936  *                              mmioRead                [WINMM.@]
 937  */
 938 LONG WINAPI mmioRead(HMMIO hmmio, HPSTR pch, LONG cch)
 939 {
 940     LPWINE_MMIO wm;
 941     LONG        count;
 942
 943     TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
 944
 945     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 946         return -1;
 947
 948     /* unbuffered case first */
 949     if (!wm->info.pchBuffer)
 950         return MMIO_SendMessage(wm, MMIOM_READ, (LPARAM)pch, cch, MMIO_PROC_32A);
 951
 952     /* first try from current buffer */
 953     if (wm->info.pchNext != wm->info.pchEndRead) {
 954         count = wm->info.pchEndRead - wm->info.pchNext;
 955         if (count > cch || count < 0) count = cch;
 956         memcpy(pch, wm->info.pchNext, count);
 957         wm->info.pchNext += count;
 958         pch += count;
 959         cch -= count;
 960     } else
 961         count = 0;
 962
 963     if (cch && (wm->info.fccIOProc != FOURCC_MEM)) {
 964         assert(wm->info.cchBuffer);
 965
 966         while (cch) {
 967             LONG size;
 968
 969             size = MMIO_GrabNextBuffer(wm, TRUE);
 970             if (size <= 0) break;
 971             if (size > cch) size = cch;
 972             memcpy(pch, wm->info.pchBuffer, size);
 973             wm->info.pchNext += size;
 974             pch += size;
 975             cch -= size;
 976             count += size;
 977         }
 978     }
 979
 980     TRACE("count=%ld\n", count);
 981     return count;
 982 }
 983
 984 /**************************************************************************
 985  *                              mmioRead                [MMSYSTEM.1212]
 986  */
 987 LONG WINAPI mmioRead16(HMMIO16 hmmio, HPSTR pch, LONG cch)
 988 {
 989     return mmioRead(hmmio, pch, cch);
 990 }
 991
 992 /**************************************************************************
 993  *                              mmioWrite               [WINMM.@]
 994  */
 995 LONG WINAPI mmioWrite(HMMIO hmmio, HPCSTR pch, LONG cch)
 996 {
 997     LPWINE_MMIO wm;
 998     LONG count,bytesW=0;
 999
1000     TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
1001
1002     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1003         return -1;
1004
1005     if (wm->info.cchBuffer) {
1006         count = 0;
1007         while (cch) {
1008             if (wm->info.pchNext != wm->info.pchEndWrite) {
1009                 count = wm->info.pchEndWrite - wm->info.pchNext;
1010                 if (count > cch || count < 0) count = cch;
1011                 memcpy(wm->info.pchNext, pch, count);
1012                 wm->info.pchNext += count;
1013                 pch += count;
1014                 cch -= count;
1015                 bytesW+=count;
1016                 wm->info.dwFlags |= MMIO_DIRTY;
1017             }
1018             else
1019             {
1020                 if (wm->info.fccIOProc == FOURCC_MEM) {
1021                     if (wm->info.adwInfo[0]) {
1022                         /* from where would we get the memory handle? */
1023                         FIXME("memory file expansion not implemented!\n");
1024                         break;
1025                     } else break;
1026                 }
1027             }
1028
1029             if (wm->info.pchNext == wm->info.pchEndWrite)
1030             {
1031                 MMIO_Flush(wm, MMIO_EMPTYBUF);
1032                 MMIO_GrabNextBuffer(wm, FALSE);
1033             }
1034             else break;
1035         }
1036     } else {
1037         bytesW = MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)pch, cch, MMIO_PROC_32A);
1038         wm->info.lBufOffset = wm->info.lDiskOffset;
1039     }
1040
1041     TRACE("bytes written=%ld\n", bytesW);
1042     return bytesW;
1043 }
1044
1045 /**************************************************************************
1046  *                              mmioWrite               [MMSYSTEM.1213]
1047  */
1048 LONG WINAPI mmioWrite16(HMMIO16 hmmio, HPCSTR pch, LONG cch)
1049 {
1050     return mmioWrite(hmmio,pch,cch);
1051 }
1052
1053 /**************************************************************************
1054  *                              mmioSeek                [WINMM.@]
1055  */
1056 LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
1057 {
1058     LPWINE_MMIO wm;
1059     LONG        offset;
1060
1061     TRACE("(%04X, %08lX, %d);\n", hmmio, lOffset, iOrigin);
1062
1063     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1064         return MMSYSERR_INVALHANDLE;
1065
1066     /* not buffered, direct seek on file */
1067     if (!wm->info.pchBuffer)
1068         return MMIO_SendMessage(wm, MMIOM_SEEK, lOffset, iOrigin, MMIO_PROC_32A);
1069
1070     switch (iOrigin) {
1071     case SEEK_SET:
1072         offset = lOffset;
1073         break;
1074     case SEEK_CUR:
1075         offset = wm->info.lBufOffset + (wm->info.pchNext - wm->info.pchBuffer) + lOffset;
1076         break;
1077     case SEEK_END:
1078         if (wm->info.fccIOProc == FOURCC_MEM) {
1079             offset = wm->info.cchBuffer;
1080         } else {
1081             assert(MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A) == wm->info.lDiskOffset);
1082             offset = MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_END, MMIO_PROC_32A);
1083             MMIO_SendMessage(wm, MMIOM_SEEK, wm->info.lDiskOffset, SEEK_SET, MMIO_PROC_32A);
1084         }
1085         offset -= lOffset;
1086         break;
1087     default:
1088         return -1;
1089     }
1090
1091     /* stay in same buffer ? */
1092     /* some memory mapped buffers are defined with -1 as a size */
1093     if ((wm->info.cchBuffer > 0) &&
1094         ((offset < wm->info.lBufOffset) ||
1095          (offset >= wm->info.lBufOffset + wm->info.cchBuffer) ||
1096          !wm->bBufferLoaded)) {
1097
1098         /* condition to change buffer */
1099         if ((wm->info.fccIOProc == FOURCC_MEM) ||
1100             MMIO_Flush(wm, 0) ||
1101             /* this also sets the wm->info.lDiskOffset field */
1102             MMIO_SendMessage(wm, MMIOM_SEEK,
1103                              (offset / wm->info.cchBuffer) * wm->info.cchBuffer,
1104                              SEEK_SET, MMIO_PROC_32A) == -1)
1105             return -1;
1106         MMIO_GrabNextBuffer(wm, TRUE);
1107     }
1108
1109     wm->info.pchNext = wm->info.pchBuffer + (offset - wm->info.lBufOffset);
1110
1111     TRACE("=> %ld\n", offset);
1112     return offset;
1113 }
1114
1115 /**************************************************************************
1116  *                              mmioSeek                [MMSYSTEM.1214]
1117  */
1118 LONG WINAPI mmioSeek16(HMMIO16 hmmio, LONG lOffset, INT16 iOrigin)
1119 {
1120     return mmioSeek(hmmio, lOffset, iOrigin);
1121 }
1122
1123 /**************************************************************************
1124  *                              mmioGetInfo             [MMSYSTEM.1215]
1125  */
1126 UINT16 WINAPI mmioGetInfo16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1127 {
1128     LPWINE_MMIO wm;
1129
1130     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1131
1132     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1133         return MMSYSERR_INVALHANDLE;
1134
1135     if (!wm->buffer16)
1136         return MMSYSERR_ERROR;
1137
1138     lpmmioinfo->dwFlags     = wm->info.dwFlags;
1139     lpmmioinfo->fccIOProc   = wm->info.fccIOProc;
1140     lpmmioinfo->pIOProc     = (LPMMIOPROC16)wm->info.pIOProc;
1141     lpmmioinfo->wErrorRet   = wm->info.wErrorRet;
1142     lpmmioinfo->hTask       = wm->info.hTask;
1143     lpmmioinfo->cchBuffer   = wm->info.cchBuffer;
1144     lpmmioinfo->pchBuffer   = (void*)wm->buffer16;
1145     lpmmioinfo->pchNext     = (void*)(wm->buffer16 + (wm->info.pchNext - wm->info.pchBuffer));
1146     lpmmioinfo->pchEndRead  = (void*)(wm->buffer16 + (wm->info.pchEndRead - wm->info.pchBuffer));
1147     lpmmioinfo->pchEndWrite = (void*)(wm->buffer16 + (wm->info.pchEndWrite - wm->info.pchBuffer));
1148     lpmmioinfo->lBufOffset  = wm->info.lBufOffset;
1149     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1150     lpmmioinfo->adwInfo[0]  = wm->info.adwInfo[0];
1151     lpmmioinfo->adwInfo[1]  = wm->info.adwInfo[1];
1152     lpmmioinfo->adwInfo[2]  = wm->info.adwInfo[2];
1153     lpmmioinfo->adwInfo[3]  = wm->info.adwInfo[3];
1154     lpmmioinfo->dwReserved1 = 0;
1155     lpmmioinfo->dwReserved2 = 0;
1156     lpmmioinfo->hmmio = wm->info.hmmio;
1157
1158     return 0;
1159 }
1160
1161 /**************************************************************************
1162  *                              mmioGetInfo             [WINMM.@]
1163  */
1164 UINT WINAPI mmioGetInfo(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1165 {
1166     LPWINE_MMIO         wm;
1167
1168     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1169
1170     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1171         return MMSYSERR_INVALHANDLE;
1172
1173     memcpy(lpmmioinfo, &wm->info, sizeof(MMIOINFO));
1174
1175     return 0;
1176 }
1177
1178 /**************************************************************************
1179  *                              mmioSetInfo             [MMSYSTEM.1216]
1180  */
1181 UINT16 WINAPI mmioSetInfo16(HMMIO16 hmmio, const MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1182 {
1183     LPWINE_MMIO         wm;
1184
1185     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1186
1187     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1188         return MMSYSERR_INVALHANDLE;
1189
1190     /* check if seg and lin buffers are the same */
1191     if (wm->info.cchBuffer != lpmmioinfo->cchBuffer ||
1192         wm->info.pchBuffer != MapSL(wm->buffer16))
1193         return MMSYSERR_INVALPARAM;
1194
1195     /* check pointers coherence */
1196     if (lpmmioinfo->pchNext < lpmmioinfo->pchBuffer ||
1197         lpmmioinfo->pchNext > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1198         lpmmioinfo->pchEndRead < lpmmioinfo->pchBuffer ||
1199         lpmmioinfo->pchEndRead > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1200         lpmmioinfo->pchEndWrite < lpmmioinfo->pchBuffer ||
1201         lpmmioinfo->pchEndWrite > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer)
1202         return MMSYSERR_INVALPARAM;
1203
1204     wm->info.pchNext     = wm->info.pchBuffer + (lpmmioinfo->pchNext     - lpmmioinfo->pchBuffer);
1205     wm->info.pchEndRead  = wm->info.pchBuffer + (lpmmioinfo->pchEndRead  - lpmmioinfo->pchBuffer);
1206     wm->info.pchEndWrite = wm->info.pchBuffer + (lpmmioinfo->pchEndWrite - lpmmioinfo->pchBuffer);
1207
1208     return 0;
1209 }
1210
1211 /**************************************************************************
1212  *                              mmioSetInfo             [WINMM.@]
1213  */
1214 UINT WINAPI mmioSetInfo(HMMIO hmmio, const MMIOINFO* lpmmioinfo, UINT uFlags)
1215 {
1216     LPWINE_MMIO         wm;
1217
1218     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1219
1220     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1221         return MMSYSERR_INVALHANDLE;
1222
1223     /* check pointers coherence */
1224     if (lpmmioinfo->pchNext < wm->info.pchBuffer ||
1225         lpmmioinfo->pchNext > wm->info.pchBuffer + wm->info.cchBuffer ||
1226         lpmmioinfo->pchEndRead < wm->info.pchBuffer ||
1227         lpmmioinfo->pchEndRead > wm->info.pchBuffer + wm->info.cchBuffer ||
1228         lpmmioinfo->pchEndWrite < wm->info.pchBuffer ||
1229         lpmmioinfo->pchEndWrite > wm->info.pchBuffer + wm->info.cchBuffer)
1230         return MMSYSERR_INVALPARAM;
1231
1232     wm->info.pchNext = lpmmioinfo->pchNext;
1233     wm->info.pchEndRead = lpmmioinfo->pchEndRead;
1234
1235     return 0;
1236 }
1237
1238 /**************************************************************************
1239 *                               mmioSetBuffer           [WINMM.@]
1240 */
1241 UINT WINAPI mmioSetBuffer(HMMIO hmmio, LPSTR pchBuffer, LONG cchBuffer, UINT uFlags)
1242 {
1243     LPWINE_MMIO         wm;
1244
1245     TRACE("(hmmio=%04x, pchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1246           hmmio, pchBuffer, cchBuffer, uFlags);
1247
1248     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1249         return MMSYSERR_INVALHANDLE;
1250
1251     return MMIO_SetBuffer(wm, pchBuffer, cchBuffer, uFlags, TRUE);
1252 }
1253
1254 /**************************************************************************
1255  *                              mmioSetBuffer           [MMSYSTEM.1217]
1256  */
1257 UINT16 WINAPI mmioSetBuffer16(HMMIO16 hmmio, LPSTR segpchBuffer,
1258                               LONG cchBuffer, UINT16 uFlags)
1259 {
1260     LPWINE_MMIO         wm;
1261
1262     TRACE("(hmmio=%04x, segpchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1263           hmmio, segpchBuffer, cchBuffer, uFlags);
1264
1265     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1266         return MMSYSERR_INVALHANDLE;
1267
1268     return MMIO_SetBuffer(wm, segpchBuffer, cchBuffer, uFlags, FALSE);
1269 }
1270
1271 /**************************************************************************
1272  *                              mmioFlush               [WINMM.@]
1273  */
1274 UINT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
1275 {
1276     LPWINE_MMIO         wm;
1277
1278     TRACE("(%04X, %04X)\n", hmmio, uFlags);
1279
1280     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1281         return MMSYSERR_INVALHANDLE;
1282
1283     return MMIO_Flush(wm, uFlags);
1284 }
1285
1286 /**************************************************************************
1287  *                              mmioFlush               [MMSYSTEM.1218]
1288  */
1289 UINT16 WINAPI mmioFlush16(HMMIO16 hmmio, UINT16 uFlags)
1290 {
1291     return mmioFlush(hmmio, uFlags);
1292 }
1293
1294 /**************************************************************************
1295  *                              mmioAdvance             [WINMM.@]
1296  */
1297 UINT WINAPI mmioAdvance(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1298 {
1299     LPWINE_MMIO         wm;
1300
1301     TRACE("hmmio=%04X, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
1302
1303     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1304         return MMSYSERR_INVALHANDLE;
1305
1306     if (!wm->info.cchBuffer)
1307         return MMIOERR_UNBUFFERED;
1308
1309     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1310         return MMSYSERR_INVALPARAM;
1311
1312     if (MMIO_Flush(wm, 0))
1313         return MMIOERR_CANNOTWRITE;
1314
1315     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1316
1317     lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1318     lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1319         (wm->info.pchEndRead - wm->info.pchBuffer);
1320     lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1321         (wm->info.pchEndWrite - wm->info.pchBuffer);
1322     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1323     lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1324     return 0;
1325 }
1326
1327 /***********************************************************************
1328  *                              mmioAdvance             [MMSYSTEM.1219]
1329  */
1330 UINT16 WINAPI mmioAdvance16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1331 {
1332     LPWINE_MMIO         wm;
1333
1334     TRACE("hmmio=%04X, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
1335
1336     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1337         return MMSYSERR_INVALHANDLE;
1338
1339     if (!wm->info.cchBuffer)
1340         return MMIOERR_UNBUFFERED;
1341
1342     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1343         return MMSYSERR_INVALPARAM;
1344
1345     if (MMIO_Flush(wm, 0))
1346         return MMIOERR_CANNOTWRITE;
1347
1348     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1349
1350     lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1351     lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1352         (wm->info.pchEndRead - wm->info.pchBuffer);
1353     lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1354         (wm->info.pchEndWrite - wm->info.pchBuffer);
1355     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1356     lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1357
1358     return 0;
1359 }
1360
1361 /**************************************************************************
1362  *                              mmioStringToFOURCCA     [WINMM.@]
1363  */
1364 FOURCC WINAPI mmioStringToFOURCCA(LPCSTR sz, UINT uFlags)
1365 {
1366     CHAR cc[4];
1367     int i = 0;
1368
1369     for (i = 0; i < 4 && sz[i]; i++) {
1370         if (uFlags & MMIO_TOUPPER) {
1371             cc[i] = toupper(sz[i]);
1372         } else {
1373             cc[i] = sz[i];
1374         }
1375     }
1376
1377     /* Pad with spaces */
1378     while (i < 4) cc[i++] = ' ';
1379
1380     TRACE("Got '%.4s'\n",cc);
1381     return mmioFOURCC(cc[0],cc[1],cc[2],cc[3]);
1382 }
1383
1384 /**************************************************************************
1385  *                              mmioStringToFOURCCW     [WINMM.@]
1386  */
1387 FOURCC WINAPI mmioStringToFOURCCW(LPCWSTR sz, UINT uFlags)
1388 {
1389     LPSTR       szA = HEAP_strdupWtoA(GetProcessHeap(),0,sz);
1390     FOURCC      ret = mmioStringToFOURCCA(szA,uFlags);
1391
1392     HeapFree(GetProcessHeap(),0,szA);
1393     return ret;
1394 }
1395
1396 /**************************************************************************
1397  *                              mmioStringToFOURCC      [MMSYSTEM.1220]
1398  */
1399 FOURCC WINAPI mmioStringToFOURCC16(LPCSTR sz, UINT16 uFlags)
1400 {
1401     return mmioStringToFOURCCA(sz, uFlags);
1402 }
1403
1404 /**************************************************************************
1405  *              mmioInstallIOProc    [MMSYSTEM.1221]
1406  */
1407 LPMMIOPROC16 WINAPI mmioInstallIOProc16(FOURCC fccIOProc, LPMMIOPROC16 pIOProc,
1408                                         DWORD dwFlags)
1409 {
1410     return (LPMMIOPROC16)MMIO_InstallIOProc(fccIOProc, (LPMMIOPROC)pIOProc,
1411                                             dwFlags, MMIO_PROC_16);
1412 }
1413
1414 /**************************************************************************
1415  *                              mmioInstallIOProcA         [WINMM.@]
1416  */
1417 LPMMIOPROC WINAPI mmioInstallIOProcA(FOURCC fccIOProc,
1418                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1419 {
1420     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32A);
1421 }
1422
1423 /**************************************************************************
1424  *                              mmioInstallIOProcW         [WINMM.@]
1425  */
1426 LPMMIOPROC WINAPI mmioInstallIOProcW(FOURCC fccIOProc,
1427                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1428 {
1429     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32W);
1430 }
1431
1432 /**************************************************************************
1433  *                              mmioSendMessage [MMSYSTEM.1222]
1434  */
1435 LRESULT WINAPI mmioSendMessage16(HMMIO16 hmmio, UINT16 uMessage,
1436                                  LPARAM lParam1, LPARAM lParam2)
1437 {
1438     LPWINE_MMIO         wm;
1439
1440     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1441
1442     if (uMessage < MMIOM_USER)
1443         return MMSYSERR_INVALPARAM;
1444
1445     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1446         return MMSYSERR_INVALHANDLE;
1447
1448     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_16);
1449 }
1450
1451 /**************************************************************************
1452  *                              mmioSendMessage         [WINMM.@]
1453  */
1454 LRESULT WINAPI mmioSendMessage(HMMIO hmmio, UINT uMessage,
1455                                LPARAM lParam1, LPARAM lParam2)
1456 {
1457     LPWINE_MMIO         wm;
1458
1459     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1460
1461     if (uMessage < MMIOM_USER)
1462         return MMSYSERR_INVALPARAM;
1463
1464     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1465         return MMSYSERR_INVALHANDLE;
1466
1467     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_32A);
1468 }
1469
1470 /**************************************************************************
1471  *                              mmioDescend             [WINMM.@]
1472  */
1473 UINT WINAPI mmioDescend(HMMIO hmmio, LPMMCKINFO lpck,
1474                         const MMCKINFO* lpckParent, UINT uFlags)
1475 {
1476     DWORD               dwOldPos;
1477     FOURCC              srchCkId;
1478     FOURCC              srchType;
1479
1480
1481     TRACE("(%04X, %p, %p, %04X);\n", hmmio, lpck, lpckParent, uFlags);
1482
1483     if (lpck == NULL)
1484         return MMSYSERR_INVALPARAM;
1485
1486     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1487     TRACE("dwOldPos=%ld\n", dwOldPos);
1488
1489     if (lpckParent != NULL) {
1490         TRACE("seek inside parent at %ld !\n", lpckParent->dwDataOffset);
1491         /* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
1492         if (dwOldPos < lpckParent->dwDataOffset ||
1493             dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
1494             WARN("outside parent chunk\n");
1495             return MMIOERR_CHUNKNOTFOUND;
1496         }
1497     }
1498
1499     /* The SDK docu says 'ckid' is used for all cases. Real World
1500      * examples disagree -Marcus,990216.
1501      */
1502
1503     srchType = 0;
1504     /* find_chunk looks for 'ckid' */
1505     if (uFlags & MMIO_FINDCHUNK)
1506         srchCkId = lpck->ckid;
1507     /* find_riff and find_list look for 'fccType' */
1508     if (uFlags & MMIO_FINDLIST) {
1509         srchCkId = FOURCC_LIST;
1510         srchType = lpck->fccType;
1511     }
1512     if (uFlags & MMIO_FINDRIFF) {
1513         srchCkId = FOURCC_RIFF;
1514         srchType = lpck->fccType;
1515     }
1516
1517     if (uFlags & (MMIO_FINDCHUNK|MMIO_FINDLIST|MMIO_FINDRIFF)) {
1518         TRACE("searching for %.4s.%.4s\n",
1519               (LPSTR)&srchCkId,
1520               srchType?(LPSTR)&srchType:"any ");
1521
1522         while (TRUE) {
1523             LONG ix;
1524
1525             ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
1526             if (ix < 2*sizeof(DWORD)) {
1527                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1528                 WARN("return ChunkNotFound\n");
1529                 return MMIOERR_CHUNKNOTFOUND;
1530             }
1531             lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1532             if (ix < lpck->dwDataOffset - dwOldPos) {
1533                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1534                 WARN("return ChunkNotFound\n");
1535                 return MMIOERR_CHUNKNOTFOUND;
1536             }
1537             TRACE("ckid=%.4s fcc=%.4s cksize=%08lX !\n",
1538                   (LPSTR)&lpck->ckid,
1539                   srchType?(LPSTR)&lpck->fccType:"<na>",
1540                   lpck->cksize);
1541             if ((srchCkId == lpck->ckid) &&
1542                 (!srchType || (srchType == lpck->fccType))
1543                 )
1544                 break;
1545
1546             dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
1547             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1548         }
1549     } else {
1550         /* FIXME: unverified, does it do this? */
1551         /* NB: This part is used by WAVE_mciOpen, among others */
1552         if (mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD)) < 3 * sizeof(DWORD)) {
1553             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1554             WARN("return ChunkNotFound 2nd\n");
1555             return MMIOERR_CHUNKNOTFOUND;
1556         }
1557         lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1558     }
1559     lpck->dwFlags = 0;
1560     /* If we were looking for RIFF/LIST chunks, the final file position
1561      * is after the chunkid. If we were just looking for the chunk
1562      * it is after the cksize. So add 4 in RIFF/LIST case.
1563      */
1564     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1565         mmioSeek(hmmio, lpck->dwDataOffset + sizeof(DWORD), SEEK_SET);
1566     else
1567         mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
1568     TRACE("lpck: ckid=%.4s, cksize=%ld, dwDataOffset=%ld fccType=%08lX (%.4s)!\n",
1569           (LPSTR)&lpck->ckid, lpck->cksize, lpck->dwDataOffset,
1570           lpck->fccType, srchType?(LPSTR)&lpck->fccType:"");
1571     return 0;
1572 }
1573
1574 /**************************************************************************
1575  *                              mmioDescend             [MMSYSTEM.1223]
1576  */
1577 UINT16 WINAPI mmioDescend16(HMMIO16 hmmio, LPMMCKINFO lpck,
1578                             const MMCKINFO* lpckParent, UINT16 uFlags)
1579 {
1580     return mmioDescend(hmmio, lpck, lpckParent, uFlags);
1581 }
1582
1583 /**************************************************************************
1584  *                              mmioAscend              [WINMM.@]
1585  */
1586 UINT WINAPI mmioAscend(HMMIO hmmio, LPMMCKINFO lpck, UINT uFlags)
1587 {
1588     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1589
1590     if (lpck->dwFlags & MMIO_DIRTY) {
1591         DWORD   dwOldPos, dwNewSize;
1592
1593         TRACE("Chunk is dirty, checking if chunk's size is correct\n");
1594         dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1595         TRACE("dwOldPos=%ld lpck->dwDataOffset = %ld\n", dwOldPos, lpck->dwDataOffset);
1596         dwNewSize = dwOldPos - lpck->dwDataOffset;
1597         if (dwNewSize != lpck->cksize) {
1598             TRACE("Nope: lpck->cksize=%ld dwNewSize=%ld\n", lpck->cksize, dwNewSize);
1599             lpck->cksize = dwNewSize;
1600
1601             /* pad odd size with 0 */
1602             if (dwNewSize & 1) {
1603                 char ch = 0;
1604                 mmioWrite(hmmio, &ch, 1);
1605             }
1606             mmioSeek(hmmio, lpck->dwDataOffset - sizeof(DWORD), SEEK_SET);
1607             mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
1608         }
1609         lpck->dwFlags = 0;
1610     }
1611
1612     mmioSeek(hmmio, lpck->dwDataOffset + ((lpck->cksize + 1) & ~1), SEEK_SET);
1613
1614     return 0;
1615 }
1616
1617 /**************************************************************************
1618  *                              mmioAscend              [MMSYSTEM.1224]
1619  */
1620 UINT16 WINAPI mmioAscend16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1621 {
1622     return mmioAscend(hmmio,lpck,uFlags);
1623 }
1624
1625 /**************************************************************************
1626  *                      mmioCreateChunk                         [WINMM.@]
1627  */
1628 UINT WINAPI mmioCreateChunk(HMMIO hmmio, MMCKINFO* lpck, UINT uFlags)
1629 {
1630     DWORD       dwOldPos;
1631     LONG        size;
1632     LONG        ix;
1633
1634     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1635
1636     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1637     TRACE("dwOldPos=%ld\n", dwOldPos);
1638
1639     if (uFlags == MMIO_CREATELIST)
1640         lpck->ckid = FOURCC_LIST;
1641     else if (uFlags == MMIO_CREATERIFF)
1642         lpck->ckid = FOURCC_RIFF;
1643
1644     TRACE("ckid=%.4s\n", (LPSTR)&lpck->ckid);
1645
1646     size = 2 * sizeof(DWORD);
1647     lpck->dwDataOffset = dwOldPos + size;
1648
1649     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1650         size += sizeof(DWORD);
1651     lpck->dwFlags = MMIO_DIRTY;
1652
1653     ix = mmioWrite(hmmio, (LPSTR)lpck, size);
1654     TRACE("after mmioWrite ix = %ld req = %ld, errno = %d\n",ix, size, errno);
1655     if (ix < size) {
1656         mmioSeek(hmmio, dwOldPos, SEEK_SET);
1657         WARN("return CannotWrite\n");
1658         return MMIOERR_CANNOTWRITE;
1659     }
1660
1661     return 0;
1662 }
1663
1664 /**************************************************************************
1665  *                              mmioCreateChunk         [MMSYSTEM.1225]
1666  */
1667 UINT16 WINAPI mmioCreateChunk16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1668 {
1669     return mmioCreateChunk(hmmio, lpck, uFlags);
1670 }
1671
1672 /**************************************************************************
1673  *                              mmioRename              [MMSYSTEM.1226]
1674  */
1675 UINT16 WINAPI mmioRename16(LPCSTR szFileName, LPCSTR szNewFileName,
1676                            MMIOINFO16* lpmmioinfo, DWORD dwRenameFlags)
1677 {
1678     UINT16              result = MMSYSERR_ERROR;
1679     LPMMIOPROC16        ioProc;
1680
1681     TRACE("('%s', '%s', %p, %08lX);\n",
1682           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1683
1684     /* If both params are NULL, then parse the file name */
1685     if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1686         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1687
1688     /* Handle any unhandled/error case from above. Assume DOS file */
1689     if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL))
1690         ioProc = (LPMMIOPROC16)mmioDosIOProc;
1691     /* if just the four character code is present, look up IO proc */
1692     else if (lpmmioinfo->pIOProc == NULL)
1693         ioProc = mmioInstallIOProc16(lpmmioinfo->fccIOProc, NULL, MMIO_FINDPROC);
1694     else
1695         ioProc = lpmmioinfo->pIOProc;
1696
1697     /* FIXME: ioProc is likely a segmented address, thus needing a
1698      * thunk somewhere. The main issue is that Wine's current thunking
1699      * 32 to 16 only supports pascal calling convention
1700      */
1701     if (ioProc)
1702         result = (ioProc)(0, MMIOM_RENAME,
1703                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1704
1705     return result;
1706 }
1707
1708 /**************************************************************************
1709  *                              mmioRenameA                     [WINMM.@]
1710  */
1711 UINT WINAPI mmioRenameA(LPCSTR szFileName, LPCSTR szNewFileName,
1712                         MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1713 {
1714     UINT        result = MMSYSERR_ERROR;
1715     LPMMIOPROC  ioProc;
1716
1717     TRACE("('%s', '%s', %p, %08lX);\n",
1718           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1719
1720     /* If both params are NULL, then parse the file name */
1721     if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1722         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1723
1724     /* Handle any unhandled/error case from above. Assume DOS file */
1725     if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL))
1726         ioProc = (LPMMIOPROC)mmioDosIOProc;
1727     /* if just the four character code is present, look up IO proc */
1728     else if (lpmmioinfo->pIOProc == NULL)
1729         ioProc = MMIO_InstallIOProc(lpmmioinfo->fccIOProc, NULL,
1730                                     MMIO_FINDPROC, MMIO_PROC_32A);
1731     else /* use relevant ioProc */
1732         ioProc = lpmmioinfo->pIOProc;
1733
1734     if (ioProc)
1735         result = (ioProc)(0, MMIOM_RENAME,
1736                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1737
1738     return result;
1739 }
1740
1741 /**************************************************************************
1742  *                              mmioRenameW                     [WINMM.@]
1743  */
1744 UINT WINAPI mmioRenameW(LPCWSTR szFileName, LPCWSTR szNewFileName,
1745                         MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1746 {
1747     LPSTR       szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
1748     LPSTR       sznFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szNewFileName);
1749     UINT        ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwRenameFlags);
1750
1751     HeapFree(GetProcessHeap(),0,szFn);
1752     HeapFree(GetProcessHeap(),0,sznFn);
1753     return ret;
1754 }