git.oblomov.eu Git - wine/blob - 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 #include "windef.h"
  26 #include "wine/winbase16.h"
  27 #include "heap.h"
  28 #include "selectors.h"
  29 #include "mmsystem.h"
  30 #include "debugtools.h"
  31 #include "winemm.h"
  32
  33 DEFAULT_DEBUG_CHANNEL(mmio);
  34
  35 /**************************************************************************
  36  *                      mmioDosIOProc                           [internal]
  37  */
  38 static LRESULT CALLBACK mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
  39                                       LPARAM lParam1, LPARAM lParam2)
  40 {
  41     LRESULT     ret = MMSYSERR_NOERROR;
  42
  43     TRACE("(%p, %X, %ld, %ld);\n", lpmmioinfo, uMessage, lParam1, lParam2);
  44
  45     switch (uMessage) {
  46     case MMIOM_OPEN:
  47         {
  48             /* Parameters:
  49              * lParam1 = szFileName parameter from mmioOpen
  50              * lParam2 = reserved (we use it for 16-bitness)
  51              * Returns: zero on success, error code on error
  52              * NOTE: lDiskOffset automatically set to zero
  53              */
  54             OFSTRUCT ofs;
  55             LPCSTR szFileName = (LPCSTR)lParam1;
  56
  57             if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
  58                 FIXME("MMIO_GETTEMP not implemented\n");
  59                 return MMIOERR_CANNOTOPEN;
  60             }
  61
  62             /* if filename NULL, assume open file handle in adwInfo[0] */
  63             if (!szFileName) {
  64                 if (lParam2)
  65                     lpmmioinfo->adwInfo[0] = DosFileHandleToWin32Handle(lpmmioinfo->adwInfo[0]);
  66                 break;
  67             }
  68
  69             lpmmioinfo->adwInfo[0] = (DWORD)OpenFile(szFileName, &ofs,
  70                                                      lpmmioinfo->dwFlags);
  71             if (lpmmioinfo->adwInfo[0] == -1)
  72                 ret = MMIOERR_CANNOTOPEN;
  73         }
  74         break;
  75
  76     case MMIOM_CLOSE:
  77         /* Parameters:
  78          * lParam1 = wFlags parameter from mmioClose
  79          * lParam2 = unused
  80          * Returns: zero on success, error code on error
  81          */
  82         if (!(lParam1 & MMIO_FHOPEN))
  83             _lclose((HFILE)lpmmioinfo->adwInfo[0]);
  84         break;
  85
  86     case MMIOM_READ:
  87         /* Parameters:
  88          * lParam1 = huge pointer to read buffer
  89          * lParam2 = number of bytes to read
  90          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
  91          *         in wErrorRet)
  92          */
  93         ret = _lread((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
  94         if (ret != -1)
  95             lpmmioinfo->lDiskOffset += ret;
  96
  97         break;
  98
  99     case MMIOM_WRITE:
 100     case MMIOM_WRITEFLUSH:
 101         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 102
 103         /* Parameters:
 104          * lParam1 = huge pointer to write buffer
 105          * lParam2 = number of bytes to write
 106          * Returns: number of bytes written, -1 for error (error code in
 107          *              wErrorRet)
 108          */
 109         ret = _hwrite((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
 110         if (ret != -1)
 111             lpmmioinfo->lDiskOffset += ret;
 112         break;
 113
 114     case MMIOM_SEEK:
 115         /* Parameters:
 116          * lParam1 = new position
 117          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 118          * Returns: new file postion, -1 on error
 119          */
 120         ret = _llseek((HFILE)lpmmioinfo->adwInfo[0], (LONG)lParam1, (LONG)lParam2);
 121         if (ret != -1)
 122             lpmmioinfo->lDiskOffset = ret;
 123         return ret;
 124
 125     case MMIOM_RENAME:
 126         /* Parameters:
 127          * lParam1 = old name
 128          * lParam2 = new name
 129          * Returns: zero on success, non-zero on failure
 130          */
 131          FIXME("MMIOM_RENAME incomplete\n");
 132          if (!MoveFileA((const char*)lParam1, (const char*)lParam2))
 133              ret = MMIOERR_FILENOTFOUND;
 134          break;
 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 CALLBACK 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             pListNode->count = 0;
 281
 282             /* Stick it on the end of the list */
 283             pListNode->pNext = pIOProcListAnchor;
 284             pIOProcListAnchor = pListNode;
 285
 286             /* Return this IOProc - that's how the caller knows we succeeded */
 287             lpProc = pIOProc;
 288         }
 289         break;
 290
 291     case MMIO_REMOVEPROC:
 292         /*
 293          * Search for the node that we're trying to remove - note
 294          * that this method won't find the first item on the list, but
 295          * since the first two items on this list are ones we won't
 296          * let the user delete anyway, that's okay
 297          */
 298         ppListNode = &pIOProcListAnchor;
 299         while ((*ppListNode) && (*ppListNode)->fourCC != fccIOProc)
 300             ppListNode = &((*ppListNode)->pNext);
 301
 302         if (*ppListNode) { /* found it */
 303             /* FIXME: what should be done if an open mmio object uses this proc ?
 304              * shall we return an error, nuke the mmio object ?
 305              */
 306             if ((*ppListNode)->count) {
 307                 ERR("Cannot remove a mmIOProc while in use\n");
 308                 break;
 309             }
 310             /* remove it, but only if it isn't builtin */
 311             if ((*ppListNode) >= defaultProcs &&
 312                 (*ppListNode) < defaultProcs + sizeof(defaultProcs)) {
 313                 WARN("Tried to remove built-in mmio proc. Skipping\n");
 314             } else {
 315                 /* Okay, nuke it */
 316                 struct IOProcList*  ptmpNode = *ppListNode;
 317                 lpProc = (*ppListNode)->pIOProc;
 318                 *ppListNode = (*ppListNode)->pNext;
 319                 HeapFree(GetProcessHeap(), 0, ptmpNode);
 320             }
 321         }
 322         break;
 323
 324     case MMIO_FINDPROC:
 325         if ((pListNode = MMIO_FindProcNode(fccIOProc))) {
 326             lpProc = pListNode->pIOProc;
 327         }
 328         break;
 329     }
 330
 331     return lpProc;
 332 }
 333
 334 /****************************************************************
 335  *                      MMIO_Map32To16                  [INTERNAL]
 336  */
 337 static LRESULT  MMIO_Map32To16(DWORD wMsg, LPARAM* lp1, LPARAM* lp2)
 338 {
 339     switch (wMsg) {
 340     case MMIOM_OPEN:
 341         {
 342             char *lp = SEGPTR_STRDUP( (LPSTR)*lp1 );
 343             if (!lp) return MMSYSERR_NOMEM;
 344             *lp1 = SEGPTR_GET(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(lp, (void*)*lp1, *lp2);
 360             *lp1 = SEGPTR_GET(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, PTR_SEG_TO_LIN(lp1), lp2);
 387         /* fall thru */
 388     case MMIOM_WRITE:
 389     case MMIOM_WRITEFLUSH:
 390         if (!SEGPTR_FREE(PTR_SEG_TO_LIN(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     LPMMIOINFO16 mmioInfo16 = SEGPTR_ALLOC(sizeof(MMIOINFO16));
 406
 407     memset(mmioInfo16, 0, sizeof(MMIOINFO16));
 408
 409     mmioInfo16->lDiskOffset = wm->info.lDiskOffset;
 410     mmioInfo16->adwInfo[0]  = wm->info.adwInfo[0];
 411     mmioInfo16->adwInfo[1]  = wm->info.adwInfo[1];
 412     mmioInfo16->adwInfo[2]  = wm->info.adwInfo[2];
 413     mmioInfo16->adwInfo[3]  = wm->info.adwInfo[3];
 414
 415     return SEGPTR_GET(mmioInfo16);
 416 }
 417
 418 /****************************************************************
 419  *              MMIO_UpdateInfoForIOProc                [INTERNAL]
 420  */
 421 static  LRESULT MMIO_UpdateInfoForIOProc(WINE_MMIO* wm, SEGPTR segmmioInfo16)
 422 {
 423     MMIOINFO16* mmioInfo16 = PTR_SEG_TO_LIN(segmmioInfo16);
 424
 425     wm->info.lDiskOffset = mmioInfo16->lDiskOffset;
 426     wm->info.adwInfo[0]  = mmioInfo16->adwInfo[0];
 427     wm->info.adwInfo[1]  = mmioInfo16->adwInfo[1];
 428     wm->info.adwInfo[2]  = mmioInfo16->adwInfo[2];
 429     wm->info.adwInfo[3]  = mmioInfo16->adwInfo[3];
 430
 431     if (!SEGPTR_FREE(mmioInfo16)) FIXME("bad free\n");
 432
 433     return MMSYSERR_NOERROR;
 434 }
 435
 436 /****************************************************************
 437  *              MMIO_SendMessage                        [INTERNAL]
 438  */
 439 static LRESULT  MMIO_SendMessage(LPWINE_MMIO wm, DWORD wMsg, LPARAM lParam1,
 440                                  LPARAM lParam2, enum mmioProcType type)
 441 {
 442     LRESULT             result;
 443     SEGPTR              segmmioInfo16;
 444     LPARAM              lp1 = lParam1, lp2 = lParam2;
 445
 446     if (!wm->ioProc || !wm->info.pIOProc) {
 447         ERR("brrr\n");
 448         result = MMSYSERR_INVALPARAM;
 449     }
 450
 451     switch (wm->ioProc->type) {
 452     case MMIO_PROC_16:
 453         segmmioInfo16 = MMIO_GenerateInfoForIOProc(wm);
 454         if (wm->ioProc->type != type) {
 455             /* map (lParam1, lParam2) into (lp1, lp2) 32=>16 */
 456             if ((result = MMIO_Map32To16(wMsg, &lp1, &lp2)) != MMSYSERR_NOERROR)
 457                 return result;
 458         }
 459         /* FIXME: is wm->info.pIOProc a segmented or a linear address ?
 460          * sounds to me it's a segmented one, should use a thunk somewhere
 461          */
 462         result = ((LPMMIOPROC16)wm->info.pIOProc)((LPSTR)segmmioInfo16,
 463                                                   wMsg, lp1, lp2);
 464
 465         if (wm->ioProc->type != type) {
 466             MMIO_UnMap32To16(wMsg, lParam1, lParam2, lp1, lp2);
 467         }
 468         MMIO_UpdateInfoForIOProc(wm, segmmioInfo16);
 469         break;
 470     case MMIO_PROC_32A:
 471     case MMIO_PROC_32W:
 472         if (wm->ioProc->type != type) {
 473             /* map (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 474             WARN("NIY\n");
 475         }
 476         result = (wm->info.pIOProc)((LPSTR)&wm->info, wMsg, lp1, lp2);
 477
 478 #if 0
 479         if (wm->ioProc->type != type) {
 480             /* unmap (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 481         }
 482 #endif
 483         break;
 484     default:
 485         FIXME("Internal error\n");
 486         result = MMSYSERR_ERROR;
 487     }
 488
 489     return result;
 490 }
 491
 492 /**************************************************************************
 493  *                              MMIO_ParseExt                   [internal]
 494  *
 495  * Parses a filename for the extension.
 496  *
 497  * RETURNS
 498  *  The FOURCC code for the extension if found, else 0.
 499  */
 500 static FOURCC MMIO_ParseExt(LPCSTR szFileName)
 501 {
 502     /* Filenames are of the form file.ext+ABC
 503        FIXME: What if a '+' is part of the file name?
 504        For now, we take the last '+' present */
 505
 506     FOURCC ret = 0;
 507
 508     /* Note that ext{Start,End} point to the . and + respectively */
 509     LPSTR extEnd;
 510
 511     TRACE("(%s)\n",debugstr_a(szFileName));
 512
 513     extEnd = strrchr(szFileName,'+');
 514     if (extEnd) {
 515         /* Need to parse to find the extension */
 516         LPSTR extStart;
 517
 518         extStart = extEnd;
 519         while (extStart > szFileName && extStart[0] != '.') {
 520             extStart--;
 521         }
 522
 523         if (extStart == szFileName) {
 524             ERR("+ but no . in szFileName: %s\n", debugstr_a(szFileName));
 525         } else {
 526             CHAR ext[5];
 527
 528             if (extEnd - extStart - 1 > 4)
 529                 WARN("Extension length > 4\n");
 530             lstrcpynA(ext,extStart + 1,min(extEnd-extStart,5));
 531             TRACE("Got extension: %s\n", debugstr_a(ext));
 532             /* FOURCC codes identifying file-extentions must be uppercase */
 533             ret = mmioStringToFOURCCA(ext, MMIO_TOUPPER);
 534         }
 535     }
 536     return ret;
 537 }
 538
 539 /**************************************************************************
 540  *                              MMIO_Get                        [internal]
 541  *
 542  * Retirieves from current process the mmio object
 543  */
 544 static  LPWINE_MMIO     MMIO_Get(LPWINE_MM_IDATA iData, HMMIO h)
 545 {
 546     LPWINE_MMIO         wm = NULL;
 547
 548     if (!iData) iData = MULTIMEDIA_GetIData();
 549
 550     EnterCriticalSection(&iData->cs);
 551     for (wm = iData->lpMMIO; wm; wm = wm->lpNext) {
 552         if (wm->info.hmmio == h)
 553             break;
 554     }
 555     LeaveCriticalSection(&iData->cs);
 556     return wm;
 557 }
 558
 559 /**************************************************************************
 560  *                              MMIO_Create                     [internal]
 561  *
 562  * Creates an internal representation for a mmio instance
 563  */
 564 static  LPWINE_MMIO             MMIO_Create(void)
 565 {
 566     static      WORD    MMIO_counter = 0;
 567     LPWINE_MMIO         wm;
 568     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 569
 570     wm = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINE_MMIO));
 571     if (wm) {
 572         EnterCriticalSection(&iData->cs);
 573         while (MMIO_Get(iData, ++MMIO_counter));
 574         wm->info.hmmio = MMIO_counter;
 575         wm->lpNext = iData->lpMMIO;
 576         iData->lpMMIO = wm;
 577         LeaveCriticalSection(&iData->cs);
 578     }
 579     return wm;
 580 }
 581
 582 /**************************************************************************
 583  *                              MMIO_Destroy                    [internal]
 584  *-
 585  * Destroys an internal representation for a mmio instance
 586  */
 587 static  BOOL            MMIO_Destroy(LPWINE_MMIO wm)
 588 {
 589     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 590     LPWINE_MMIO*        m;
 591
 592     EnterCriticalSection(&iData->cs);
 593     for (m = &(iData->lpMMIO); *m && *m != wm; m = &(*m)->lpNext);
 594     if (*m) {
 595         *m = (*m)->lpNext;
 596         HeapFree(GetProcessHeap(), 0, wm);
 597         wm = NULL;
 598     }
 599     LeaveCriticalSection(&iData->cs);
 600     return wm ? FALSE : TRUE;
 601 }
 602
 603 /****************************************************************
 604  *                      MMIO_Flush                      [INTERNAL]
 605  */
 606 static  LRESULT MMIO_Flush(WINE_MMIO* wm, UINT uFlags)
 607 {
 608     if (wm->info.cchBuffer && (wm->info.fccIOProc != FOURCC_MEM)) {
 609         /* not quite sure what to do here, but I'll guess */
 610         if (wm->info.dwFlags & MMIO_DIRTY) {
 611             MMIO_SendMessage(wm, MMIOM_SEEK, wm->info.lBufOffset,
 612                              SEEK_SET, MMIO_PROC_32A);
 613             MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)wm->info.pchBuffer,
 614                              wm->info.pchNext - wm->info.pchBuffer, MMIO_PROC_32A);
 615         }
 616         if (uFlags & MMIO_EMPTYBUF)
 617             wm->info.pchNext = wm->info.pchBuffer;
 618     }
 619     wm->info.dwFlags &= ~MMIO_DIRTY;
 620
 621     return 0;
 622 }
 623
 624 /***************************************************************************
 625  *                      MMIO_GrabNextBuffer                     [INTERNAL]
 626  */
 627 static LONG     MMIO_GrabNextBuffer(LPWINE_MMIO wm, int for_read)
 628 {
 629     LONG        size = wm->info.cchBuffer;
 630
 631     TRACE("bo=%lx do=%lx of=%lx\n",
 632           wm->info.lBufOffset, wm->info.lDiskOffset,
 633           MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A));
 634
 635     wm->info.lBufOffset = wm->info.lDiskOffset;
 636     wm->info.pchNext = wm->info.pchBuffer;
 637     wm->info.pchEndRead = wm->info.pchBuffer;
 638     wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
 639
 640     if (for_read) {
 641         size = MMIO_SendMessage(wm, MMIOM_READ, (LPARAM)wm->info.pchBuffer,
 642                                 size, MMIO_PROC_32A);
 643         if (size > 0)
 644             wm->info.pchEndRead += size;
 645     }
 646     wm->bBufferLoaded = TRUE;
 647     return size;
 648 }
 649
 650 /***************************************************************************
 651  *                      MMIO_SetBuffer                          [INTERNAL]
 652  */
 653 static  UINT    MMIO_SetBuffer(WINE_MMIO* wm, void* pchBuffer, LONG cchBuffer,
 654                                UINT uFlags, BOOL bFrom32)
 655 {
 656     TRACE("(%p %p %ld %u %d)\n", wm, pchBuffer, cchBuffer, uFlags, bFrom32);
 657
 658     if (uFlags)                 return MMSYSERR_INVALPARAM;
 659     if (cchBuffer > 0xFFFF)
 660         WARN("Untested handling of huge mmio buffers (%ld >= 64k)\n", cchBuffer);
 661
 662     if (MMIO_Flush(wm, MMIO_EMPTYBUF) != 0)
 663         return MMIOERR_CANNOTWRITE;
 664
 665     if ((!cchBuffer || pchBuffer) && (wm->info.dwFlags & MMIO_ALLOCBUF)) {
 666         GlobalUnlock16(wm->hMem);
 667         GlobalFree16(wm->hMem);
 668         wm->info.dwFlags &= ~MMIO_ALLOCBUF;
 669     }
 670     if (pchBuffer) {
 671         if (bFrom32) {
 672             wm->info.pchBuffer = pchBuffer;
 673             wm->buffer16 = 0;
 674         } else {
 675             wm->info.pchBuffer = PTR_SEG_TO_LIN(pchBuffer);
 676             wm->buffer16 = (SEGPTR)pchBuffer;
 677         }
 678         wm->hMem = 0;
 679     } else if (cchBuffer && (wm->info.dwFlags & MMIO_ALLOCBUF)) {
 680         HGLOBAL16 hNewBuf;
 681         GlobalUnlock16(wm->hMem);
 682         hNewBuf = GlobalReAlloc16(wm->hMem, cchBuffer, 0);
 683         if (!hNewBuf) {
 684             /* FIXME: this assumes the memory block didn't move */
 685             GlobalLock16(wm->hMem);
 686             return MMIOERR_OUTOFMEMORY;
 687         }
 688         wm->hMem = hNewBuf;
 689     } else if (cchBuffer) {
 690         if (!(wm->hMem = GlobalAlloc16(GMEM_MOVEABLE, cchBuffer)))
 691             return MMIOERR_OUTOFMEMORY;
 692         wm->info.dwFlags |= MMIO_ALLOCBUF;
 693     } else {
 694         wm->info.pchBuffer = NULL;
 695         wm->hMem = 0;
 696         wm->buffer16 = 0;
 697     }
 698
 699     if (wm->hMem) {
 700         wm->buffer16 = WIN16_GlobalLock16(wm->hMem);
 701         wm->info.pchBuffer = (void*)PTR_SEG_TO_LIN((void*)wm->buffer16);
 702     }
 703
 704     wm->info.cchBuffer = cchBuffer;
 705     wm->info.pchNext = wm->info.pchBuffer;
 706     wm->info.pchEndRead = wm->info.pchBuffer;
 707     wm->info.pchEndWrite = wm->info.pchBuffer + cchBuffer;
 708     wm->info.lBufOffset = 0;
 709     wm->bBufferLoaded = FALSE;
 710
 711     return 0;
 712 }
 713
 714 /**************************************************************************
 715  *                      MMIO_Open                               [internal]
 716  */
 717 static HMMIO MMIO_Open(LPSTR szFileName, MMIOINFO* refmminfo,
 718                        DWORD dwOpenFlags, enum mmioProcType type)
 719 {
 720     LPWINE_MMIO         wm;
 721
 722     TRACE("('%s', %p, %08lX, %d);\n", szFileName, refmminfo, dwOpenFlags, type);
 723
 724     if (dwOpenFlags & (MMIO_PARSE|MMIO_EXIST)) {
 725         char    buffer[MAX_PATH];
 726
 727         if (GetFullPathNameA(szFileName, sizeof(buffer), buffer, NULL) >= sizeof(buffer))
 728             return (HMMIO16)FALSE;
 729         if ((dwOpenFlags & MMIO_EXIST) && (GetFileAttributesA(buffer) == -1))
 730             return (HMMIO)FALSE;
 731         strcpy(szFileName, buffer);
 732         return (HMMIO)TRUE;
 733     }
 734
 735     if ((wm = MMIO_Create()) == NULL)
 736         return 0;
 737
 738     /* If both params are NULL, then parse the file name */
 739     if (refmminfo->fccIOProc == 0 && refmminfo->pIOProc == NULL) {
 740         wm->info.fccIOProc = MMIO_ParseExt(szFileName);
 741         /* Handle any unhandled/error case. Assume DOS file */
 742         if (wm->info.fccIOProc == 0)
 743             wm->info.fccIOProc = FOURCC_DOS;
 744         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 745         wm->info.pIOProc = wm->ioProc->pIOProc;
 746         wm->bTmpIOProc = FALSE;
 747     }
 748     /* if just the four character code is present, look up IO proc */
 749     else if (refmminfo->pIOProc == NULL) {
 750         wm->info.fccIOProc = refmminfo->fccIOProc;
 751         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 752         wm->info.pIOProc = wm->ioProc->pIOProc;
 753         wm->bTmpIOProc = FALSE;
 754     }
 755     /* if IO proc specified, use it and specified four character code */
 756     else {
 757         wm->info.fccIOProc = refmminfo->fccIOProc;
 758         wm->info.pIOProc = refmminfo->pIOProc;
 759         MMIO_InstallIOProc(wm->info.fccIOProc, wm->info.pIOProc,
 760                            MMIO_INSTALLPROC, type);
 761         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 762         assert(wm->ioProc->pIOProc == refmminfo->pIOProc);
 763         wm->info.pIOProc = wm->ioProc->pIOProc;
 764         wm->bTmpIOProc = TRUE;
 765     }
 766
 767     wm->bBufferLoaded = FALSE;
 768     wm->ioProc->count++;
 769
 770     if (dwOpenFlags & MMIO_ALLOCBUF) {
 771         if ((refmminfo->wErrorRet = mmioSetBuffer(wm->info.hmmio, NULL,
 772                                                   MMIO_DEFAULTBUFFER, 0)))
 773             goto error1;
 774     } else if (wm->info.fccIOProc == FOURCC_MEM) {
 775         refmminfo->wErrorRet = MMIO_SetBuffer(wm, refmminfo->pchBuffer,
 776                                               refmminfo->cchBuffer, 0,
 777                                               type != MMIO_PROC_16);
 778         if (refmminfo->wErrorRet != MMSYSERR_NOERROR)
 779             goto error1;
 780         wm->bBufferLoaded = TRUE;
 781     } /* else => unbuffered, wm->info.pchBuffer == NULL */
 782
 783     /* see mmioDosIOProc for that one */
 784     wm->info.adwInfo[0] = refmminfo->adwInfo[0];
 785     wm->info.dwFlags = dwOpenFlags;
 786
 787     /* call IO proc to actually open file */
 788     refmminfo->wErrorRet = MMIO_SendMessage(wm, MMIOM_OPEN, (LPARAM)szFileName,
 789                                             type == MMIO_PROC_16, MMIO_PROC_32A);
 790
 791     if (refmminfo->wErrorRet == 0)
 792         return wm->info.hmmio;
 793  error1:
 794     if (wm->ioProc) wm->ioProc->count--;
 795  error2:
 796     MMIO_Destroy(wm);
 797     return 0;
 798 }
 799
 800 /**************************************************************************
 801  *                              mmioOpenW                       [WINMM.123]
 802  */
 803 HMMIO WINAPI mmioOpenW(LPWSTR szFileName, MMIOINFO* lpmmioinfo,
 804                        DWORD dwOpenFlags)
 805 {
 806     HMMIO       ret;
 807     LPSTR       szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
 808
 809     if (lpmmioinfo) {
 810         ret = MMIO_Open(szFn, lpmmioinfo, dwOpenFlags, MMIO_PROC_32W);
 811     } else {
 812         MMIOINFO        mmioinfo;
 813
 814         mmioinfo.fccIOProc = 0;
 815         mmioinfo.pIOProc = NULL;
 816         mmioinfo.pchBuffer = NULL;
 817         mmioinfo.cchBuffer = 0;
 818
 819         ret = MMIO_Open(szFn, &mmioinfo, dwOpenFlags, MMIO_PROC_32W);
 820     }
 821
 822     HeapFree(GetProcessHeap(), 0, szFn);
 823     return ret;
 824 }
 825
 826 /**************************************************************************
 827  *                              mmioOpenA                       [WINMM.122]
 828  */
 829 HMMIO WINAPI mmioOpenA(LPSTR szFileName, MMIOINFO* lpmmioinfo,
 830                        DWORD dwOpenFlags)
 831 {
 832     HMMIO       ret;
 833
 834     if (lpmmioinfo) {
 835         ret = MMIO_Open(szFileName, lpmmioinfo, dwOpenFlags, MMIO_PROC_32A);
 836     } else {
 837         MMIOINFO        mmioinfo;
 838
 839         mmioinfo.fccIOProc = 0;
 840         mmioinfo.pIOProc = NULL;
 841         mmioinfo.pchBuffer = NULL;
 842         mmioinfo.cchBuffer = 0;
 843
 844         ret = MMIO_Open(szFileName, &mmioinfo, dwOpenFlags, MMIO_PROC_32A);
 845     }
 846     return ret;
 847 }
 848
 849 /**************************************************************************
 850  *                              mmioOpen                [MMSYSTEM.1210]
 851  */
 852 HMMIO16 WINAPI mmioOpen16(LPSTR szFileName, MMIOINFO16* lpmmioinfo16,
 853                           DWORD dwOpenFlags)
 854 {
 855     HMMIO       ret;
 856     MMIOINFO    mmio;
 857
 858     if (lpmmioinfo16) {
 859         MMIOINFO        mmioinfo;
 860
 861         memset(&mmioinfo, 0, sizeof(mmioinfo));
 862
 863         mmioinfo.dwFlags     = lpmmioinfo16->dwFlags;
 864         mmioinfo.fccIOProc   = lpmmioinfo16->fccIOProc;
 865         mmioinfo.pIOProc     = (LPMMIOPROC)lpmmioinfo16->pIOProc;
 866         mmioinfo.cchBuffer   = lpmmioinfo16->cchBuffer;
 867         mmioinfo.pchBuffer   = lpmmioinfo16->pchBuffer;
 868         mmioinfo.adwInfo[0]  = lpmmioinfo16->adwInfo[0];
 869         mmioinfo.adwInfo[1]  = lpmmioinfo16->adwInfo[1];
 870         mmioinfo.adwInfo[2]  = lpmmioinfo16->adwInfo[2];
 871         mmioinfo.adwInfo[3]  = lpmmioinfo16->adwInfo[3];
 872
 873         ret = MMIO_Open(szFileName, &mmioinfo, dwOpenFlags, MMIO_PROC_16);
 874
 875         mmioGetInfo16(mmioinfo.hmmio, lpmmioinfo16, 0);
 876         lpmmioinfo16->wErrorRet = ret;
 877     } else {
 878         mmio.fccIOProc = 0;
 879         mmio.pIOProc = NULL;
 880         mmio.pchBuffer = NULL;
 881         mmio.cchBuffer = 0;
 882         ret = MMIO_Open(szFileName, &mmio, dwOpenFlags, FALSE);
 883     }
 884     return ret;
 885 }
 886
 887
 888 /**************************************************************************
 889  *                              mmioClose               [WINMM.114]
 890  */
 891 MMRESULT WINAPI mmioClose(HMMIO hmmio, UINT uFlags)
 892 {
 893     LPWINE_MMIO wm;
 894     MMRESULT    result;
 895
 896     TRACE("(%04X, %04X);\n", hmmio, uFlags);
 897
 898     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 899         return MMSYSERR_INVALHANDLE;
 900
 901     if ((result = MMIO_Flush(wm, MMIO_EMPTYBUF)) != 0)
 902         return result;
 903
 904     result = MMIO_SendMessage(wm, MMIOM_CLOSE, uFlags, 0, MMIO_PROC_32A);
 905
 906     mmioSetBuffer(hmmio, NULL, 0, 0);
 907
 908     wm->ioProc->count--;
 909
 910     if (wm->bTmpIOProc)
 911         MMIO_InstallIOProc(wm->info.fccIOProc, NULL,
 912                            MMIO_REMOVEPROC, wm->ioProc->type);
 913
 914     MMIO_Destroy(wm);
 915
 916     return result;
 917 }
 918
 919 /**************************************************************************
 920  *                              mmioClose               [MMSYSTEM.1211]
 921  */
 922 MMRESULT16 WINAPI mmioClose16(HMMIO16 hmmio, UINT16 uFlags)
 923 {
 924     return mmioClose(hmmio, uFlags);
 925 }
 926
 927 /**************************************************************************
 928  *                              mmioRead                [WINMM.124]
 929  */
 930 LONG WINAPI mmioRead(HMMIO hmmio, HPSTR pch, LONG cch)
 931 {
 932     LPWINE_MMIO wm;
 933     LONG        count;
 934
 935     TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
 936
 937     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 938         return -1;
 939
 940     /* unbuffered case first */
 941     if (!wm->info.pchBuffer)
 942         return MMIO_SendMessage(wm, MMIOM_READ, (LPARAM)pch, cch, MMIO_PROC_32A);
 943
 944     /* first try from current buffer */
 945     if (wm->info.pchNext != wm->info.pchEndRead) {
 946         count = wm->info.pchEndRead - wm->info.pchNext;
 947         if (count > cch || count < 0) count = cch;
 948         memcpy(pch, wm->info.pchNext, count);
 949         wm->info.pchNext += count;
 950         pch += count;
 951         cch -= count;
 952     } else
 953         count = 0;
 954
 955     if (cch && (wm->info.fccIOProc != FOURCC_MEM)) {
 956         assert(wm->info.cchBuffer);
 957
 958         while (cch) {
 959             LONG size;
 960
 961             size = MMIO_GrabNextBuffer(wm, TRUE);
 962             if (size <= 0) break;
 963             if (size > cch) size = cch;
 964             memcpy(pch, wm->info.pchBuffer, size);
 965             wm->info.pchNext += size;
 966             pch += size;
 967             cch -= size;
 968             count += size;
 969         }
 970     }
 971
 972     TRACE("count=%ld\n", count);
 973     return count;
 974 }
 975
 976 /**************************************************************************
 977  *                              mmioRead                [MMSYSTEM.1212]
 978  */
 979 LONG WINAPI mmioRead16(HMMIO16 hmmio, HPSTR pch, LONG cch)
 980 {
 981     return mmioRead(hmmio, pch, cch);
 982 }
 983
 984 /**************************************************************************
 985  *                              mmioWrite               [WINMM.133]
 986  */
 987 LONG WINAPI mmioWrite(HMMIO hmmio, HPCSTR pch, LONG cch)
 988 {
 989     LPWINE_MMIO wm;
 990     LONG count,bytesW=0;
 991
 992     TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
 993
 994     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 995         return -1;
 996
 997     if (wm->info.cchBuffer) {
 998         count = 0;
 999         while (cch) {
1000             if (wm->info.pchNext != wm->info.pchEndWrite) {
1001                 count = wm->info.pchEndWrite - wm->info.pchNext;
1002                 if (count > cch || count < 0) count = cch;
1003                 memcpy(wm->info.pchNext, pch, count);
1004                 wm->info.pchNext += count;
1005                 pch += count;
1006                 cch -= count;
1007                 bytesW+=count;
1008                 wm->info.dwFlags |= MMIO_DIRTY;
1009             }
1010             else
1011             {
1012                 if (wm->info.fccIOProc == FOURCC_MEM) {
1013                     if (wm->info.adwInfo[0]) {
1014                         /* from where would we get the memory handle? */
1015                         FIXME("memory file expansion not implemented!\n");
1016                         break;
1017                     } else break;
1018                 }
1019             }
1020
1021             if (wm->info.pchNext == wm->info.pchEndWrite)
1022             {
1023                 MMIO_Flush(wm, MMIO_EMPTYBUF);
1024                 MMIO_GrabNextBuffer(wm, FALSE);
1025             }
1026             else break;
1027         }
1028     } else {
1029         bytesW = MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)pch, cch, MMIO_PROC_32A);
1030         wm->info.lBufOffset = wm->info.lDiskOffset;
1031     }
1032
1033     TRACE("bytes written=%ld\n", bytesW);
1034     return bytesW;
1035 }
1036
1037 /**************************************************************************
1038  *                              mmioWrite               [MMSYSTEM.1213]
1039  */
1040 LONG WINAPI mmioWrite16(HMMIO16 hmmio, HPCSTR pch, LONG cch)
1041 {
1042     return mmioWrite(hmmio,pch,cch);
1043 }
1044
1045 /**************************************************************************
1046  *                              mmioSeek                [MMSYSTEM.1214]
1047  */
1048 LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
1049 {
1050     LPWINE_MMIO wm;
1051     LONG        offset;
1052
1053     TRACE("(%04X, %08lX, %d);\n", hmmio, lOffset, iOrigin);
1054
1055     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1056         return MMSYSERR_INVALHANDLE;
1057
1058     /* not buffered, direct seek on file */
1059     if (!wm->info.pchBuffer)
1060         return MMIO_SendMessage(wm, MMIOM_SEEK, lOffset, iOrigin, MMIO_PROC_32A);
1061
1062     switch (iOrigin) {
1063     case SEEK_SET:
1064         offset = lOffset;
1065         break;
1066     case SEEK_CUR:
1067         offset = wm->info.lBufOffset + (wm->info.pchNext - wm->info.pchBuffer) + lOffset;
1068         break;
1069     case SEEK_END:
1070         if (wm->info.fccIOProc == FOURCC_MEM) {
1071             offset = wm->info.cchBuffer;
1072         } else {
1073             assert(MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A) == wm->info.lDiskOffset);
1074             offset = MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_END, MMIO_PROC_32A);
1075             MMIO_SendMessage(wm, MMIOM_SEEK, wm->info.lDiskOffset, SEEK_SET, MMIO_PROC_32A);
1076         }
1077         offset -= lOffset;
1078         break;
1079     default:
1080         return -1;
1081     }
1082
1083     /* stay in same buffer ? */
1084     /* some memory mapped buffers are defined with -1 as a size */
1085     if ((wm->info.cchBuffer > 0) &&
1086         ((offset < wm->info.lBufOffset) ||
1087          (offset >= wm->info.lBufOffset + wm->info.cchBuffer) ||
1088          !wm->bBufferLoaded)) {
1089
1090         /* condition to change buffer */
1091         if ((wm->info.fccIOProc == FOURCC_MEM) ||
1092             MMIO_Flush(wm, MMIO_EMPTYBUF) ||
1093             /* this also sets the wm->info.lDiskOffset field */
1094             MMIO_SendMessage(wm, MMIOM_SEEK,
1095                              (offset / wm->info.cchBuffer) * wm->info.cchBuffer,
1096                              SEEK_SET, MMIO_PROC_32A) == -1)
1097             return -1;
1098         MMIO_GrabNextBuffer(wm, TRUE);
1099     }
1100
1101     wm->info.pchNext = wm->info.pchBuffer + (offset - wm->info.lBufOffset);
1102
1103     TRACE("=> %ld\n", offset);
1104     return offset;
1105 }
1106
1107 /**************************************************************************
1108  *                              mmioSeek                [MMSYSTEM.1214]
1109  */
1110 LONG WINAPI mmioSeek16(HMMIO16 hmmio, LONG lOffset, INT16 iOrigin)
1111 {
1112     return mmioSeek(hmmio, lOffset, iOrigin);
1113 }
1114
1115 /**************************************************************************
1116  *                              mmioGetInfo             [MMSYSTEM.1215]
1117  */
1118 UINT16 WINAPI mmioGetInfo16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1119 {
1120     LPWINE_MMIO wm;
1121
1122     TRACE("mmioGetInfo\n");
1123
1124     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1125         return MMSYSERR_INVALHANDLE;
1126
1127     if (!wm->buffer16)
1128         return MMSYSERR_ERROR;
1129
1130     lpmmioinfo->dwFlags     = wm->info.dwFlags;
1131     lpmmioinfo->fccIOProc   = wm->info.fccIOProc;
1132     lpmmioinfo->pIOProc     = (LPMMIOPROC16)wm->info.pIOProc;
1133     lpmmioinfo->wErrorRet   = wm->info.wErrorRet;
1134     lpmmioinfo->hTask       = wm->info.hTask;
1135     lpmmioinfo->cchBuffer   = wm->info.cchBuffer;
1136     lpmmioinfo->pchBuffer   = (void*)wm->buffer16;
1137     lpmmioinfo->pchNext     = (void*)(wm->buffer16 + (wm->info.pchNext - wm->info.pchBuffer));
1138     lpmmioinfo->pchEndRead  = (void*)(wm->buffer16 + (wm->info.pchEndRead - wm->info.pchBuffer));
1139     lpmmioinfo->pchEndWrite = (void*)(wm->buffer16 + (wm->info.pchEndWrite - wm->info.pchBuffer));
1140     lpmmioinfo->lBufOffset  = wm->info.lBufOffset;
1141     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1142     lpmmioinfo->adwInfo[0]  = wm->info.adwInfo[0];
1143     lpmmioinfo->adwInfo[1]  = wm->info.adwInfo[1];
1144     lpmmioinfo->adwInfo[2]  = wm->info.adwInfo[2];
1145     lpmmioinfo->adwInfo[3]  = wm->info.adwInfo[3];
1146     lpmmioinfo->dwReserved1 = 0;
1147     lpmmioinfo->dwReserved2 = 0;
1148     lpmmioinfo->hmmio = wm->info.hmmio;
1149
1150     return 0;
1151 }
1152
1153 /**************************************************************************
1154  *                              mmioGetInfo             [WINMM.118]
1155  */
1156 UINT WINAPI mmioGetInfo(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1157 {
1158     LPWINE_MMIO         wm;
1159
1160     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1161
1162     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1163         return MMSYSERR_INVALHANDLE;
1164
1165     memcpy(lpmmioinfo, &wm->info, sizeof(MMIOINFO));
1166
1167     return 0;
1168 }
1169
1170 /**************************************************************************
1171  *                              mmioSetInfo16           [MMSYSTEM.1216]
1172  */
1173 UINT16 WINAPI mmioSetInfo16(HMMIO16 hmmio, const MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1174 {
1175     LPWINE_MMIO         wm;
1176
1177     TRACE("mmioSetInfo\n");
1178
1179     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1180         return MMSYSERR_INVALHANDLE;
1181
1182     /* check if seg and lin buffers are the same */
1183     if (wm->info.cchBuffer != lpmmioinfo->cchBuffer ||
1184         wm->info.pchBuffer != PTR_SEG_TO_LIN((void*)wm->buffer16))
1185         return MMSYSERR_INVALPARAM;
1186
1187     /* check pointers coherence */
1188     if (lpmmioinfo->pchNext < lpmmioinfo->pchBuffer ||
1189         lpmmioinfo->pchNext > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1190         lpmmioinfo->pchEndRead < lpmmioinfo->pchBuffer ||
1191         lpmmioinfo->pchEndRead > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1192         lpmmioinfo->pchEndWrite < lpmmioinfo->pchBuffer ||
1193         lpmmioinfo->pchEndWrite > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer)
1194         return MMSYSERR_INVALPARAM;
1195
1196     wm->info.pchNext     = wm->info.pchBuffer + (lpmmioinfo->pchNext     - lpmmioinfo->pchBuffer);
1197     wm->info.pchEndRead  = wm->info.pchBuffer + (lpmmioinfo->pchEndRead  - lpmmioinfo->pchBuffer);
1198     wm->info.pchEndWrite = wm->info.pchBuffer + (lpmmioinfo->pchEndWrite - lpmmioinfo->pchBuffer);
1199
1200     return 0;
1201 }
1202
1203 /**************************************************************************
1204  *                              mmioSetInfo             [WINMM.130]
1205  */
1206 UINT WINAPI mmioSetInfo(HMMIO hmmio, const MMIOINFO* lpmmioinfo, UINT uFlags)
1207 {
1208     LPWINE_MMIO         wm;
1209
1210     TRACE("mmioSetInfo\n");
1211
1212     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1213         return MMSYSERR_INVALHANDLE;
1214
1215     /* check pointers coherence */
1216     if (lpmmioinfo->pchNext < wm->info.pchBuffer ||
1217         lpmmioinfo->pchNext > wm->info.pchBuffer + wm->info.cchBuffer ||
1218         lpmmioinfo->pchEndRead < wm->info.pchBuffer ||
1219         lpmmioinfo->pchEndRead > wm->info.pchBuffer + wm->info.cchBuffer ||
1220         lpmmioinfo->pchEndWrite < wm->info.pchBuffer ||
1221         lpmmioinfo->pchEndWrite > wm->info.pchBuffer + wm->info.cchBuffer)
1222         return MMSYSERR_INVALPARAM;
1223
1224     wm->info.pchNext = lpmmioinfo->pchNext;
1225     wm->info.pchEndRead = lpmmioinfo->pchEndRead;
1226
1227     return 0;
1228 }
1229
1230 /**************************************************************************
1231 *                               mmioSetBuffer           [WINMM.129]
1232 */
1233 UINT WINAPI mmioSetBuffer(HMMIO hmmio, LPSTR pchBuffer, LONG cchBuffer, UINT uFlags)
1234 {
1235     LPWINE_MMIO         wm;
1236
1237     TRACE("(hmmio=%04x, pchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1238           hmmio, pchBuffer, cchBuffer, uFlags);
1239
1240     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1241         return MMSYSERR_INVALHANDLE;
1242
1243     return MMIO_SetBuffer(wm, pchBuffer, cchBuffer, uFlags, TRUE);
1244 }
1245
1246 /**************************************************************************
1247  *                              mmioSetBuffer           [MMSYSTEM.1217]
1248  */
1249 UINT16 WINAPI mmioSetBuffer16(HMMIO16 hmmio, LPSTR segpchBuffer,
1250                               LONG cchBuffer, UINT16 uFlags)
1251 {
1252     LPWINE_MMIO         wm;
1253
1254     TRACE("(hmmio=%04x, segpchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1255           hmmio, segpchBuffer, cchBuffer, uFlags);
1256
1257     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1258         return MMSYSERR_INVALHANDLE;
1259
1260     return MMIO_SetBuffer(wm, segpchBuffer, cchBuffer, uFlags, FALSE);
1261 }
1262
1263 /**************************************************************************
1264  *                              mmioFlush               [WINMM.117]
1265  */
1266 UINT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
1267 {
1268     LPWINE_MMIO         wm;
1269
1270     TRACE("(%04X, %04X)\n", hmmio, uFlags);
1271
1272     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1273         return MMSYSERR_INVALHANDLE;
1274
1275     return MMIO_Flush(wm, uFlags);
1276 }
1277
1278 /**************************************************************************
1279  *                              mmioFlush               [MMSYSTEM.1218]
1280  */
1281 UINT16 WINAPI mmioFlush16(HMMIO16 hmmio, UINT16 uFlags)
1282 {
1283     return mmioFlush(hmmio, uFlags);
1284 }
1285
1286 /**************************************************************************
1287  *                              mmioAdvance             [MMSYSTEM.1219]
1288  */
1289 UINT WINAPI mmioAdvance(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1290 {
1291     LPWINE_MMIO         wm;
1292
1293     TRACE("hmmio=%04X, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
1294
1295     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1296         return MMSYSERR_INVALHANDLE;
1297
1298     if (!wm->info.cchBuffer)
1299         return MMIOERR_UNBUFFERED;
1300
1301     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1302         return MMSYSERR_INVALPARAM;
1303
1304     if (MMIO_Flush(wm, MMIO_EMPTYBUF))
1305         return MMIOERR_CANNOTWRITE;
1306
1307     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1308
1309     lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1310     lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1311         (wm->info.pchEndRead - wm->info.pchBuffer);
1312     lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1313         (wm->info.pchEndWrite - wm->info.pchBuffer);
1314     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1315     lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1316     return 0;
1317 }
1318
1319 /***********************************************************************
1320  *                              mmioAdvance             [MMSYSTEM.1219]
1321  */
1322 UINT16 WINAPI mmioAdvance16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1323 {
1324     LPWINE_MMIO         wm;
1325
1326     TRACE("mmioAdvance\n");
1327
1328     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1329         return MMSYSERR_INVALHANDLE;
1330
1331     if (!wm->info.cchBuffer)
1332         return MMIOERR_UNBUFFERED;
1333
1334     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1335         return MMSYSERR_INVALPARAM;
1336
1337     if (MMIO_Flush(wm, MMIO_EMPTYBUF))
1338         return MMIOERR_CANNOTWRITE;
1339
1340     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1341
1342     lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1343     lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1344         (wm->info.pchEndRead - wm->info.pchBuffer);
1345     lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1346         (wm->info.pchEndWrite - wm->info.pchBuffer);
1347     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1348     lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1349
1350     return 0;
1351 }
1352
1353 /**************************************************************************
1354  *                              mmioStringToFOURCCA     [WINMM.131]
1355  */
1356 FOURCC WINAPI mmioStringToFOURCCA(LPCSTR sz, UINT uFlags)
1357 {
1358     CHAR cc[4];
1359     int i = 0;
1360
1361     for (i = 0; i < 4 && sz[i]; i++) {
1362         if (uFlags & MMIO_TOUPPER) {
1363             cc[i] = toupper(sz[i]);
1364         } else {
1365             cc[i] = sz[i];
1366         }
1367     }
1368
1369     /* Pad with spaces */
1370     while (i < 4) {
1371         cc[i] = ' ';
1372         i++;
1373     }
1374
1375     TRACE("Got %c%c%c%c\n",cc[0],cc[1],cc[2],cc[3]);
1376     return mmioFOURCC(cc[0],cc[1],cc[2],cc[3]);
1377 }
1378
1379 /**************************************************************************
1380  *                              mmioStringToFOURCCW     [WINMM.132]
1381  */
1382 FOURCC WINAPI mmioStringToFOURCCW(LPCWSTR sz, UINT uFlags)
1383 {
1384     LPSTR       szA = HEAP_strdupWtoA(GetProcessHeap(),0,sz);
1385     FOURCC      ret = mmioStringToFOURCCA(szA,uFlags);
1386
1387     HeapFree(GetProcessHeap(),0,szA);
1388     return ret;
1389 }
1390
1391 /**************************************************************************
1392  *                              mmioStringToFOURCC      [MMSYSTEM.1220]
1393  */
1394 FOURCC WINAPI mmioStringToFOURCC16(LPCSTR sz, UINT16 uFlags)
1395 {
1396     return mmioStringToFOURCCA(sz, uFlags);
1397 }
1398
1399 /**************************************************************************
1400  *              mmioInstallIOProc16    [MMSYSTEM.1221]
1401  */
1402 LPMMIOPROC16 WINAPI mmioInstallIOProc16(FOURCC fccIOProc, LPMMIOPROC16 pIOProc,
1403                                         DWORD dwFlags)
1404 {
1405     return (LPMMIOPROC16)MMIO_InstallIOProc(fccIOProc, (LPMMIOPROC)pIOProc,
1406                                             dwFlags, MMIO_PROC_16);
1407 }
1408
1409 /**************************************************************************
1410  *                              mmioInstallIOProcA         [WINMM.120]
1411  */
1412 LPMMIOPROC WINAPI mmioInstallIOProcA(FOURCC fccIOProc,
1413                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1414 {
1415     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32A);
1416 }
1417
1418 /**************************************************************************
1419  *                              mmioInstallIOProcW         [WINMM.]
1420  */
1421 LPMMIOPROC WINAPI mmioInstallIOProcW(FOURCC fccIOProc,
1422                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1423 {
1424     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32W);
1425 }
1426
1427 /**************************************************************************
1428  *                              mmioSendMessage16       [MMSYSTEM.1222]
1429  */
1430 LRESULT WINAPI mmioSendMessage16(HMMIO16 hmmio, UINT16 uMessage,
1431                                  LPARAM lParam1, LPARAM lParam2)
1432 {
1433     LPWINE_MMIO         wm;
1434
1435     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1436
1437     if (uMessage < MMIOM_USER)
1438         return MMSYSERR_INVALPARAM;
1439
1440     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1441         return MMSYSERR_INVALHANDLE;
1442
1443     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_16);
1444 }
1445
1446 /**************************************************************************
1447  *                              mmioSendMessage         [WINMM.]
1448  */
1449 LRESULT WINAPI mmioSendMessage(HMMIO hmmio, UINT uMessage,
1450                                LPARAM lParam1, LPARAM lParam2)
1451 {
1452     LPWINE_MMIO         wm;
1453
1454     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1455
1456     if (uMessage < MMIOM_USER)
1457         return MMSYSERR_INVALPARAM;
1458
1459     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1460         return MMSYSERR_INVALHANDLE;
1461
1462     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_32A);
1463 }
1464
1465 /**************************************************************************
1466  *                              mmioDescend             [MMSYSTEM.1223]
1467  */
1468 UINT WINAPI mmioDescend(HMMIO hmmio, LPMMCKINFO lpck,
1469                         const MMCKINFO* lpckParent, UINT uFlags)
1470 {
1471     DWORD               dwOldPos;
1472     FOURCC              srchCkId;
1473     FOURCC              srchType;
1474
1475
1476     TRACE("(%04X, %p, %p, %04X);\n", hmmio, lpck, lpckParent, uFlags);
1477
1478     if (lpck == NULL)
1479         return MMSYSERR_INVALPARAM;
1480
1481     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1482     TRACE("dwOldPos=%ld\n", dwOldPos);
1483
1484     if (lpckParent != NULL) {
1485         TRACE("seek inside parent at %ld !\n", lpckParent->dwDataOffset);
1486         /* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
1487         if (dwOldPos < lpckParent->dwDataOffset ||
1488             dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
1489             WARN("outside parent chunk\n");
1490             return MMIOERR_CHUNKNOTFOUND;
1491         }
1492     }
1493
1494     /* The SDK docu says 'ckid' is used for all cases. Real World
1495      * examples disagree -Marcus,990216.
1496      */
1497
1498     srchType = 0;
1499     /* find_chunk looks for 'ckid' */
1500     if (uFlags & MMIO_FINDCHUNK)
1501         srchCkId = lpck->ckid;
1502     /* find_riff and find_list look for 'fccType' */
1503     if (uFlags & MMIO_FINDLIST) {
1504         srchCkId = FOURCC_LIST;
1505         srchType = lpck->fccType;
1506     }
1507     if (uFlags & MMIO_FINDRIFF) {
1508         srchCkId = FOURCC_RIFF;
1509         srchType = lpck->fccType;
1510     }
1511
1512     if (uFlags & (MMIO_FINDCHUNK|MMIO_FINDLIST|MMIO_FINDRIFF)) {
1513         TRACE("searching for %.4s.%.4s\n",
1514               (LPSTR)&srchCkId,
1515               srchType?(LPSTR)&srchType:"any ");
1516
1517         while (TRUE) {
1518             LONG ix;
1519
1520             ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
1521             if (ix < 2*sizeof(DWORD)) {
1522                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1523                 WARN("return ChunkNotFound\n");
1524                 return MMIOERR_CHUNKNOTFOUND;
1525             }
1526             lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1527             if (ix < lpck->dwDataOffset - dwOldPos) {
1528                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1529                 WARN("return ChunkNotFound\n");
1530                 return MMIOERR_CHUNKNOTFOUND;
1531             }
1532             TRACE("ckid=%.4s fcc=%.4s cksize=%08lX !\n",
1533                   (LPSTR)&lpck->ckid,
1534                   srchType?(LPSTR)&lpck->fccType:"<na>",
1535                   lpck->cksize);
1536             if ((srchCkId == lpck->ckid) &&
1537                 (!srchType || (srchType == lpck->fccType))
1538                 )
1539                 break;
1540
1541             dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
1542             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1543         }
1544     } else {
1545         /* FIXME: unverified, does it do this? */
1546         /* NB: This part is used by WAVE_mciOpen, among others */
1547         if (mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD)) < 3 * sizeof(DWORD)) {
1548             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1549             WARN("return ChunkNotFound 2nd\n");
1550             return MMIOERR_CHUNKNOTFOUND;
1551         }
1552         lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1553     }
1554     lpck->dwFlags = 0;
1555     /* If we were looking for RIFF/LIST chunks, the final file position
1556      * is after the chunkid. If we were just looking for the chunk
1557      * it is after the cksize. So add 4 in RIFF/LIST case.
1558      */
1559     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1560         mmioSeek(hmmio, lpck->dwDataOffset + sizeof(DWORD), SEEK_SET);
1561     else
1562         mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
1563     TRACE("lpck: ckid=%.4s, cksize=%ld, dwDataOffset=%ld fccType=%08lX (%.4s)!\n",
1564           (LPSTR)&lpck->ckid, lpck->cksize, lpck->dwDataOffset,
1565           lpck->fccType, srchType?(LPSTR)&lpck->fccType:"");
1566     return 0;
1567 }
1568
1569 /**************************************************************************
1570  *                              mmioDescend16           [MMSYSTEM.1223]
1571  */
1572 UINT16 WINAPI mmioDescend16(HMMIO16 hmmio, LPMMCKINFO lpck,
1573                             const MMCKINFO* lpckParent, UINT16 uFlags)
1574 {
1575     return mmioDescend(hmmio, lpck, lpckParent, uFlags);
1576 }
1577
1578 /**************************************************************************
1579  *                              mmioAscend              [WINMM.113]
1580  */
1581 UINT WINAPI mmioAscend(HMMIO hmmio, LPMMCKINFO lpck, UINT uFlags)
1582 {
1583     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1584
1585     if (lpck->dwFlags & MMIO_DIRTY) {
1586         DWORD   dwOldPos, dwNewSize, dwSizePos;
1587
1588         TRACE("chunk is marked MMIO_DIRTY, correcting chunk size\n");
1589         dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1590         TRACE("dwOldPos=%ld lpck->dwDataOffset = %ld\n", dwOldPos, lpck->dwDataOffset);
1591         dwNewSize = dwOldPos - lpck->dwDataOffset;
1592         if (dwNewSize != lpck->cksize) {
1593             TRACE("dwNewSize=%ld\n", dwNewSize);
1594             lpck->cksize = dwNewSize;
1595
1596             dwSizePos = lpck->dwDataOffset - sizeof(DWORD);
1597             TRACE("dwSizePos=%ld\n", dwSizePos);
1598
1599             mmioSeek(hmmio, dwSizePos, SEEK_SET);
1600             mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
1601         }
1602     }
1603
1604     mmioSeek(hmmio, lpck->dwDataOffset + ((lpck->cksize + 1) & ~1), SEEK_SET);
1605
1606     return 0;
1607 }
1608
1609 /**************************************************************************
1610  *                              mmioAscend              [MMSYSTEM.1224]
1611  */
1612 UINT16 WINAPI mmioAscend16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1613 {
1614     return mmioAscend(hmmio,lpck,uFlags);
1615 }
1616
1617 /**************************************************************************
1618  *                              mmioCreateChunk         [MMSYSTEM.1225]
1619  */
1620 UINT16 WINAPI mmioCreateChunk16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1621 {
1622     DWORD       dwOldPos;
1623     LONG        size;
1624     LONG        ix;
1625
1626     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1627
1628     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1629     TRACE("dwOldPos=%ld\n", dwOldPos);
1630
1631     if (uFlags == MMIO_CREATELIST)
1632         lpck->ckid = FOURCC_LIST;
1633     else if (uFlags == MMIO_CREATERIFF)
1634         lpck->ckid = FOURCC_RIFF;
1635
1636     TRACE("ckid=%08lX\n", lpck->ckid);
1637
1638     size = 2 * sizeof(DWORD);
1639     lpck->dwDataOffset = dwOldPos + size;
1640
1641     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1642         size += sizeof(DWORD);
1643     lpck->dwFlags = MMIO_DIRTY;
1644
1645     ix = mmioWrite(hmmio, (LPSTR)lpck, size);
1646     TRACE("after mmioWrite ix = %ld req = %ld, errno = %d\n",ix, size, errno);
1647     if (ix < size) {
1648         mmioSeek(hmmio, dwOldPos, SEEK_SET);
1649         WARN("return CannotWrite\n");
1650         return MMIOERR_CANNOTWRITE;
1651     }
1652
1653     return 0;
1654 }
1655
1656 /**************************************************************************
1657  *                      mmioCreateChunk                         [WINMM.115]
1658  */
1659 UINT WINAPI mmioCreateChunk(HMMIO hmmio, MMCKINFO* lpck, UINT uFlags)
1660 {
1661     return mmioCreateChunk16(hmmio, lpck, uFlags);
1662 }
1663
1664 /**************************************************************************
1665  *                              mmioRename              [MMSYSTEM.1226]
1666  */
1667 UINT16 WINAPI mmioRename16(LPCSTR szFileName, LPCSTR szNewFileName,
1668                            MMIOINFO16* lpmmioinfo, DWORD dwRenameFlags)
1669 {
1670     UINT16              result = MMSYSERR_ERROR;
1671     LPMMIOPROC16        ioProc;
1672
1673     TRACE("('%s', '%s', %p, %08lX);\n",
1674           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1675
1676     /* If both params are NULL, then parse the file name */
1677     if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1678         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1679
1680     /* Handle any unhandled/error case from above. Assume DOS file */
1681     if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL))
1682         ioProc = (LPMMIOPROC16)mmioDosIOProc;
1683     /* if just the four character code is present, look up IO proc */
1684     else if (lpmmioinfo->pIOProc == NULL)
1685         ioProc = mmioInstallIOProc16(lpmmioinfo->fccIOProc, NULL, MMIO_FINDPROC);
1686     else
1687         ioProc = lpmmioinfo->pIOProc;
1688
1689     /* FIXME: ioProc is likely a segmented address, thus needing a
1690      * thunk somewhere. The main issue is that Wine's current thunking
1691      * 32 to 16 only supports pascal calling convention
1692      */
1693     if (ioProc)
1694         result = (ioProc)(0, MMIOM_RENAME,
1695                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1696
1697     return result;
1698 }
1699
1700 /**************************************************************************
1701  *                              mmioRenameA                     [WINMM.125]
1702  */
1703 UINT WINAPI mmioRenameA(LPCSTR szFileName, LPCSTR szNewFileName,
1704                         MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1705 {
1706     UINT        result = MMSYSERR_ERROR;
1707     LPMMIOPROC  ioProc;
1708
1709     TRACE("('%s', '%s', %p, %08lX);\n",
1710           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1711
1712     /* If both params are NULL, then parse the file name */
1713     if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1714         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1715
1716     /* Handle any unhandled/error case from above. Assume DOS file */
1717     if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL))
1718         ioProc = (LPMMIOPROC)mmioDosIOProc;
1719     /* if just the four character code is present, look up IO proc */
1720     else if (lpmmioinfo->pIOProc == NULL)
1721         ioProc = MMIO_InstallIOProc(lpmmioinfo->fccIOProc, NULL,
1722                                     MMIO_FINDPROC, MMIO_PROC_32A);
1723     else /* use relevant ioProc */
1724         ioProc = lpmmioinfo->pIOProc;
1725
1726     if (ioProc)
1727         result = (ioProc)(0, MMIOM_RENAME,
1728                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1729
1730     return result;
1731 }
1732
1733 /**************************************************************************
1734  *                              mmioRenameW                     [WINMM.126]
1735  */
1736 UINT WINAPI mmioRenameW(LPCWSTR szFileName, LPCWSTR szNewFileName,
1737                         MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1738 {
1739     LPSTR       szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
1740     LPSTR       sznFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szNewFileName);
1741     UINT        ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwRenameFlags);
1742
1743     HeapFree(GetProcessHeap(),0,szFn);
1744     HeapFree(GetProcessHeap(),0,sznFn);
1745     return ret;
1746 }