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 "file.h"
  30 #include "mmsystem.h"
  31 #include "debugtools.h"
  32 #include "winemm.h"
  33
  34 DEFAULT_DEBUG_CHANNEL(mmio);
  35
  36 /**************************************************************************
  37  *                      mmioDosIOProc                           [internal]
  38  */
  39 static LRESULT CALLBACK mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
  40                                       LPARAM lParam1, LPARAM lParam2)
  41 {
  42     LRESULT     ret = MMSYSERR_NOERROR;
  43
  44     TRACE("(%p, %X, %ld, %ld);\n", lpmmioinfo, uMessage, lParam1, lParam2);
  45
  46     switch (uMessage) {
  47     case MMIOM_OPEN:
  48         {
  49             /* Parameters:
  50              * lParam1 = szFileName parameter from mmioOpen
  51              * lParam2 = reserved (we use it for 16-bitness)
  52              * Returns: zero on success, error code on error
  53              * NOTE: lDiskOffset automatically set to zero
  54              */
  55             OFSTRUCT ofs;
  56             LPCSTR szFileName = (LPCSTR)lParam1;
  57
  58             if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
  59                 FIXME("MMIO_GETTEMP not implemented\n");
  60                 return MMIOERR_CANNOTOPEN;
  61             }
  62
  63             /* if filename NULL, assume open file handle in adwInfo[0] */
  64             if (!szFileName) {
  65                 if (lParam2)
  66                     lpmmioinfo->adwInfo[0] = FILE_GetHandle(lpmmioinfo->adwInfo[0]);
  67                 break;
  68             }
  69
  70             lpmmioinfo->adwInfo[0] = (DWORD)OpenFile(szFileName, &ofs,
  71                                                      lpmmioinfo->dwFlags);
  72             if (lpmmioinfo->adwInfo[0] == -1)
  73                 ret = MMIOERR_CANNOTOPEN;
  74         }
  75         break;
  76
  77     case MMIOM_CLOSE:
  78         /* Parameters:
  79          * lParam1 = wFlags parameter from mmioClose
  80          * lParam2 = unused
  81          * Returns: zero on success, error code on error
  82          */
  83         if (!(lParam1 & MMIO_FHOPEN))
  84             _lclose((HFILE)lpmmioinfo->adwInfo[0]);
  85         break;
  86
  87     case MMIOM_READ:
  88         /* Parameters:
  89          * lParam1 = huge pointer to read buffer
  90          * lParam2 = number of bytes to read
  91          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
  92          *         in wErrorRet)
  93          */
  94         ret = _lread((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
  95         if (ret != -1)
  96             lpmmioinfo->lDiskOffset += ret;
  97
  98         break;
  99
 100     case MMIOM_WRITE:
 101     case MMIOM_WRITEFLUSH:
 102         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 103
 104         /* Parameters:
 105          * lParam1 = huge pointer to write buffer
 106          * lParam2 = number of bytes to write
 107          * Returns: number of bytes written, -1 for error (error code in
 108          *              wErrorRet)
 109          */
 110         ret = _hwrite((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
 111         if (ret != -1)
 112             lpmmioinfo->lDiskOffset += ret;
 113         break;
 114
 115     case MMIOM_SEEK:
 116         /* Parameters:
 117          * lParam1 = new position
 118          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 119          * Returns: new file postion, -1 on error
 120          */
 121         ret = _llseek((HFILE)lpmmioinfo->adwInfo[0], (LONG)lParam1, (LONG)lParam2);
 122         if (ret != -1)
 123             lpmmioinfo->lDiskOffset = ret;
 124         return ret;
 125
 126     case MMIOM_RENAME:
 127         /* Parameters:
 128          * lParam1 = old name
 129          * lParam2 = new name
 130          * Returns: zero on success, non-zero on failure
 131          */
 132          FIXME("MMIOM_RENAME incomplete\n");
 133          if (!MoveFileA((const char*)lParam1, (const char*)lParam2))
 134              ret = MMIOERR_FILENOTFOUND;
 135          break;
 136
 137     default:
 138         FIXME("unexpected message %u\n", uMessage);
 139         return 0;
 140     }
 141
 142     return ret;
 143 }
 144
 145 /**************************************************************************
 146  *                      mmioMemIOProc                           [internal]
 147  */
 148 static LRESULT CALLBACK mmioMemIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
 149                                       LPARAM lParam1, LPARAM lParam2)
 150 {
 151     TRACE("(%p,0x%04x,0x%08lx,0x%08lx)\n", lpmmioinfo, uMessage, lParam1, lParam2);
 152
 153     switch (uMessage) {
 154
 155     case MMIOM_OPEN:
 156         /* Parameters:
 157          * lParam1 = filename (must be NULL)
 158          * lParam2 = reserved (we use it for 16-bitness)
 159          * Returns: zero on success, error code on error
 160          * NOTE: lDiskOffset automatically set to zero
 161          */
 162         /* FIXME: io proc shouldn't change it */
 163         if (!(lpmmioinfo->dwFlags & MMIO_CREATE))
 164             lpmmioinfo->pchEndRead = lpmmioinfo->pchEndWrite;
 165         return 0;
 166
 167     case MMIOM_CLOSE:
 168         /* Parameters:
 169          * lParam1 = wFlags parameter from mmioClose
 170          * lParam2 = unused
 171          * Returns: zero on success, error code on error
 172          */
 173         return 0;
 174
 175     case MMIOM_READ:
 176         /* Parameters:
 177          * lParam1 = huge pointer to read buffer
 178          * lParam2 = number of bytes to read
 179          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
 180          *         in wErrorRet)
 181          * NOTE: lDiskOffset should be updated
 182          */
 183         FIXME("MMIOM_READ on memory files should not occur, buffer may be lost!\n");
 184         return 0;
 185
 186     case MMIOM_WRITE:
 187     case MMIOM_WRITEFLUSH:
 188         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 189
 190         /* Parameters:
 191          * lParam1 = huge pointer to write buffer
 192          * lParam2 = number of bytes to write
 193          * Returns: number of bytes written, -1 for error (error code in
 194          *              wErrorRet)
 195          * NOTE: lDiskOffset should be updated
 196          */
 197         FIXME("MMIOM_WRITE on memory files should not occur, buffer may be lost!\n");
 198         return 0;
 199
 200     case MMIOM_SEEK:
 201         /* Parameters:
 202          * lParam1 = new position
 203          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 204          * Returns: new file postion, -1 on error
 205          * NOTE: lDiskOffset should be updated
 206          */
 207         FIXME("MMIOM_SEEK on memory files should not occur, buffer may be lost!\n");
 208         return -1;
 209
 210     default:
 211         FIXME("unexpected message %u\n", uMessage);
 212         return 0;
 213     }
 214
 215     return 0;
 216 }
 217
 218
 219 enum mmioProcType {MMIO_PROC_16,MMIO_PROC_32A,MMIO_PROC_32W};
 220
 221 struct IOProcList
 222 {
 223     struct IOProcList*pNext;       /* Next item in linked list */
 224     FOURCC            fourCC;      /* four-character code identifying IOProc */
 225     LPMMIOPROC        pIOProc;     /* pointer to IProc */
 226     enum mmioProcType type;        /* 16, 32A or 32W */
 227     int               count;       /* number of objects linked to it */
 228 };
 229
 230 /* This array will be the entire list for most apps */
 231
 232 static struct IOProcList defaultProcs[] = {
 233     {&defaultProcs[1], FOURCC_DOS, (LPMMIOPROC)mmioDosIOProc, MMIO_PROC_32A, 0},
 234     {NULL,             FOURCC_MEM, (LPMMIOPROC)mmioMemIOProc, MMIO_PROC_32A, 0},
 235 };
 236
 237 static struct IOProcList*       pIOProcListAnchor = &defaultProcs[0];
 238
 239 /****************************************************************
 240  *              MMIO_FindProcNode                       [INTERNAL]
 241  *
 242  * Finds the ProcList node associated with a given FOURCC code.
 243  */
 244 static struct IOProcList*       MMIO_FindProcNode(FOURCC fccIOProc)
 245 {
 246     struct IOProcList*  pListNode;
 247
 248     for (pListNode = pIOProcListAnchor; pListNode; pListNode = pListNode->pNext) {
 249         if (pListNode->fourCC == fccIOProc) {
 250             return pListNode;
 251         }
 252     }
 253     return NULL;
 254 }
 255
 256 /****************************************************************
 257  *              MMIO_InstallIOProc                      [INTERNAL]
 258  */
 259 static LPMMIOPROC MMIO_InstallIOProc(FOURCC fccIOProc, LPMMIOPROC pIOProc,
 260                                      DWORD dwFlags, enum mmioProcType type)
 261 {
 262     LPMMIOPROC          lpProc = NULL;
 263     struct IOProcList*  pListNode;
 264     struct IOProcList** ppListNode;
 265
 266     TRACE("(%ld, %p, %08lX, %i)\n", fccIOProc, pIOProc, dwFlags, type);
 267
 268     if (dwFlags & MMIO_GLOBALPROC)
 269         FIXME("Global procedures not implemented\n");
 270
 271     /* just handle the known procedures for now */
 272     switch (dwFlags & (MMIO_INSTALLPROC|MMIO_REMOVEPROC|MMIO_FINDPROC)) {
 273     case MMIO_INSTALLPROC:
 274         /* Create new entry for the IOProc list */
 275         pListNode = HeapAlloc(GetProcessHeap(), 0, sizeof(*pListNode));
 276         if (pListNode) {
 277             /* Fill in this node */
 278             pListNode->fourCC = fccIOProc;
 279             pListNode->pIOProc = pIOProc;
 280             pListNode->type = type;
 281             pListNode->count = 0;
 282
 283             /* Stick it on the end of the list */
 284             pListNode->pNext = pIOProcListAnchor;
 285             pIOProcListAnchor = pListNode;
 286
 287             /* Return this IOProc - that's how the caller knows we succeeded */
 288             lpProc = pIOProc;
 289         }
 290         break;
 291
 292     case MMIO_REMOVEPROC:
 293         /*
 294          * Search for the node that we're trying to remove - note
 295          * that this method won't find the first item on the list, but
 296          * since the first two items on this list are ones we won't
 297          * let the user delete anyway, that's okay
 298          */
 299         ppListNode = &pIOProcListAnchor;
 300         while ((*ppListNode) && (*ppListNode)->fourCC != fccIOProc)
 301             ppListNode = &((*ppListNode)->pNext);
 302
 303         if (*ppListNode) { /* found it */
 304             /* FIXME: what should be done if an open mmio object uses this proc ?
 305              * shall we return an error, nuke the mmio object ?
 306              */
 307             if ((*ppListNode)->count) {
 308                 ERR("Cannot remove a mmIOProc while in use\n");
 309                 break;
 310             }
 311             /* remove it, but only if it isn't builtin */
 312             if ((*ppListNode) >= defaultProcs &&
 313                 (*ppListNode) < defaultProcs + sizeof(defaultProcs)) {
 314                 WARN("Tried to remove built-in mmio proc. Skipping\n");
 315             } else {
 316                 /* Okay, nuke it */
 317                 struct IOProcList*  ptmpNode = *ppListNode;
 318                 lpProc = (*ppListNode)->pIOProc;
 319                 *ppListNode = (*ppListNode)->pNext;
 320                 HeapFree(GetProcessHeap(), 0, ptmpNode);
 321             }
 322         }
 323         break;
 324
 325     case MMIO_FINDPROC:
 326         if ((pListNode = MMIO_FindProcNode(fccIOProc))) {
 327             lpProc = pListNode->pIOProc;
 328         }
 329         break;
 330     }
 331
 332     return lpProc;
 333 }
 334
 335 /****************************************************************
 336  *                      MMIO_Map32To16                  [INTERNAL]
 337  */
 338 static LRESULT  MMIO_Map32To16(DWORD wMsg, LPARAM* lp1, LPARAM* lp2)
 339 {
 340     switch (wMsg) {
 341     case MMIOM_OPEN:
 342         {
 343             void*       lp = SEGPTR_ALLOC(strlen((LPSTR)*lp1) + 1);
 344             if (!lp) return MMSYSERR_NOMEM;
 345
 346             strcpy((void*)SEGPTR_GET(lp), (LPSTR)*lp1);
 347             *lp1 = (LPARAM)lp;
 348         }
 349         break;
 350     case MMIOM_CLOSE:
 351     case MMIOM_SEEK:
 352         /* nothing to do */
 353         break;
 354     case MMIOM_READ:
 355     case MMIOM_WRITE:
 356     case MMIOM_WRITEFLUSH:
 357         {
 358             void*       lp = SEGPTR_ALLOC(*lp2);
 359             if (!lp) return MMSYSERR_NOMEM;
 360
 361             if (wMsg != MMIOM_READ)
 362                 memcpy((void*)SEGPTR_GET(lp), (void*)*lp1, *lp2);
 363             *lp1 = (LPARAM)lp;
 364         }
 365         break;
 366     default:
 367         TRACE("Not a mappable message (%ld)\n", wMsg);
 368     }
 369     return MMSYSERR_NOERROR;
 370 }
 371
 372 /****************************************************************
 373  *              MMIO_UnMap32To16                        [INTERNAL]
 374  */
 375 static LRESULT  MMIO_UnMap32To16(DWORD wMsg, LPARAM lParam1, LPARAM lParam2,
 376                                  LPARAM lp1, LPARAM lp2)
 377 {
 378     switch (wMsg) {
 379     case MMIOM_OPEN:
 380         if (!SEGPTR_FREE((void*)lp1)) {
 381             FIXME("bad free line=%d\n", __LINE__);
 382         }
 383         break;
 384     case MMIOM_CLOSE:
 385     case MMIOM_SEEK:
 386         /* nothing to do */
 387         break;
 388     case MMIOM_READ:
 389         memcpy((void*)lParam1, (void*)SEGPTR_GET((void*)lp1), lp2);
 390         /* fall thru */
 391     case MMIOM_WRITE:
 392     case MMIOM_WRITEFLUSH:
 393         if (!SEGPTR_FREE((void*)lp1)) {
 394             FIXME("bad free line=%d\n", __LINE__);
 395         }
 396         break;
 397     default:
 398         TRACE("Not a mappable message (%ld)\n", wMsg);
 399     }
 400     return MMSYSERR_NOERROR;
 401 }
 402
 403 /****************************************************************
 404  *              MMIO_GenerateInfoForIOProc              [INTERNAL]
 405  */
 406 static  SEGPTR  MMIO_GenerateInfoForIOProc(const WINE_MMIO* wm)
 407 {
 408     SEGPTR              lp = (SEGPTR)SEGPTR_ALLOC(sizeof(MMIOINFO16));
 409     LPMMIOINFO16        mmioInfo16 = (LPMMIOINFO16)SEGPTR_GET((void*)lp);
 410
 411     memset(mmioInfo16, 0, sizeof(MMIOINFO16));
 412
 413     mmioInfo16->lDiskOffset = wm->info.lDiskOffset;
 414     mmioInfo16->adwInfo[0]  = wm->info.adwInfo[0];
 415     mmioInfo16->adwInfo[1]  = wm->info.adwInfo[1];
 416     mmioInfo16->adwInfo[2]  = wm->info.adwInfo[2];
 417     mmioInfo16->adwInfo[3]  = wm->info.adwInfo[3];
 418
 419     return lp;
 420 }
 421
 422 /****************************************************************
 423  *              MMIO_UpdateInfoForIOProc                [INTERNAL]
 424  */
 425 static  LRESULT MMIO_UpdateInfoForIOProc(WINE_MMIO* wm, SEGPTR segmmioInfo16)
 426 {
 427     const MMIOINFO16*   mmioInfo16;
 428
 429     mmioInfo16 = (const MMIOINFO16*)SEGPTR_GET((void*)segmmioInfo16);
 430
 431     wm->info.lDiskOffset = mmioInfo16->lDiskOffset;
 432     wm->info.adwInfo[0]  = mmioInfo16->adwInfo[0];
 433     wm->info.adwInfo[1]  = mmioInfo16->adwInfo[1];
 434     wm->info.adwInfo[2]  = mmioInfo16->adwInfo[2];
 435     wm->info.adwInfo[3]  = mmioInfo16->adwInfo[3];
 436
 437     if (!SEGPTR_FREE((void*)segmmioInfo16)) {
 438         FIXME("bad free line=%d\n", __LINE__);
 439     }
 440
 441     return MMSYSERR_NOERROR;
 442 }
 443
 444 /****************************************************************
 445  *              MMIO_SendMessage                        [INTERNAL]
 446  */
 447 static LRESULT  MMIO_SendMessage(LPWINE_MMIO wm, DWORD wMsg, LPARAM lParam1,
 448                                  LPARAM lParam2, enum mmioProcType type)
 449 {
 450     LRESULT             result;
 451     SEGPTR              segmmioInfo16;
 452     LPARAM              lp1 = lParam1, lp2 = lParam2;
 453
 454     if (!wm->ioProc || !wm->info.pIOProc) {
 455         ERR("brrr\n");
 456         result = MMSYSERR_INVALPARAM;
 457     }
 458
 459     switch (wm->ioProc->type) {
 460     case MMIO_PROC_16:
 461         segmmioInfo16 = MMIO_GenerateInfoForIOProc(wm);
 462         if (wm->ioProc->type != type) {
 463             /* map (lParam1, lParam2) into (lp1, lp2) 32=>16 */
 464             if ((result = MMIO_Map32To16(wMsg, &lp1, &lp2)) != MMSYSERR_NOERROR)
 465                 return result;
 466         }
 467         /* FIXME: is wm->info.pIOProc a segmented or a linear address ?
 468          * sounds to me it's a segmented one, should use a thunk somewhere
 469          */
 470         result = ((LPMMIOPROC16)wm->info.pIOProc)((LPSTR)segmmioInfo16,
 471                                                   wMsg, lp1, lp2);
 472
 473         if (wm->ioProc->type != type) {
 474             MMIO_UnMap32To16(wMsg, lParam1, lParam2, lp1, lp2);
 475         }
 476         MMIO_UpdateInfoForIOProc(wm, segmmioInfo16);
 477         break;
 478     case MMIO_PROC_32A:
 479     case MMIO_PROC_32W:
 480         if (wm->ioProc->type != type) {
 481             /* map (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 482             WARN("NIY\n");
 483         }
 484         result = (wm->info.pIOProc)((LPSTR)&wm->info, wMsg, lp1, lp2);
 485
 486 #if 0
 487         if (wm->ioProc->type != type) {
 488             /* unmap (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 489         }
 490 #endif
 491         break;
 492     default:
 493         FIXME("Internal error\n");
 494         result = MMSYSERR_ERROR;
 495     }
 496
 497     return result;
 498 }
 499
 500 /**************************************************************************
 501  *                              MMIO_ParseExt                   [internal]
 502  *
 503  * Parses a filename for the extension.
 504  *
 505  * RETURNS
 506  *  The FOURCC code for the extension if found, else 0.
 507  */
 508 static FOURCC MMIO_ParseExt(LPCSTR szFileName)
 509 {
 510     /* Filenames are of the form file.ext+ABC
 511        FIXME: What if a '+' is part of the file name?
 512        For now, we take the last '+' present */
 513
 514     FOURCC ret = 0;
 515
 516     /* Note that ext{Start,End} point to the . and + respectively */
 517     LPSTR extEnd;
 518
 519     TRACE("(%s)\n",debugstr_a(szFileName));
 520
 521     extEnd = strrchr(szFileName,'+');
 522     if (extEnd) {
 523         /* Need to parse to find the extension */
 524         LPSTR extStart;
 525
 526         extStart = extEnd;
 527         while (extStart > szFileName && extStart[0] != '.') {
 528             extStart--;
 529         }
 530
 531         if (extStart == szFileName) {
 532             ERR("+ but no . in szFileName: %s\n", debugstr_a(szFileName));
 533         } else {
 534             CHAR ext[5];
 535
 536             if (extEnd - extStart - 1 > 4)
 537                 WARN("Extension length > 4\n");
 538             lstrcpynA(ext,extStart + 1,min(extEnd-extStart,5));
 539             TRACE("Got extension: %s\n", debugstr_a(ext));
 540             /* FOURCC codes identifying file-extentions must be uppercase */
 541             ret = mmioStringToFOURCCA(ext, MMIO_TOUPPER);
 542         }
 543     }
 544     return ret;
 545 }
 546
 547 /**************************************************************************
 548  *                              MMIO_Get                        [internal]
 549  *
 550  * Retirieves from current process the mmio object
 551  */
 552 static  LPWINE_MMIO     MMIO_Get(LPWINE_MM_IDATA iData, HMMIO h)
 553 {
 554     LPWINE_MMIO         wm = NULL;
 555
 556     if (!iData) iData = MULTIMEDIA_GetIData();
 557
 558     EnterCriticalSection(&iData->cs);
 559     for (wm = iData->lpMMIO; wm; wm = wm->lpNext) {
 560         if (wm->info.hmmio == h)
 561             break;
 562     }
 563     LeaveCriticalSection(&iData->cs);
 564     return wm;
 565 }
 566
 567 /**************************************************************************
 568  *                              MMIO_Create                     [internal]
 569  *
 570  * Creates an internal representation for a mmio instance
 571  */
 572 static  LPWINE_MMIO             MMIO_Create(void)
 573 {
 574     static      WORD    MMIO_counter = 0;
 575     LPWINE_MMIO         wm;
 576     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 577
 578     wm = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINE_MMIO));
 579     if (wm) {
 580         EnterCriticalSection(&iData->cs);
 581         while (MMIO_Get(iData, ++MMIO_counter));
 582         wm->info.hmmio = MMIO_counter;
 583         wm->lpNext = iData->lpMMIO;
 584         iData->lpMMIO = wm;
 585         LeaveCriticalSection(&iData->cs);
 586     }
 587     return wm;
 588 }
 589
 590 /**************************************************************************
 591  *                              MMIO_Destroy                    [internal]
 592  *-
 593  * Destroys an internal representation for a mmio instance
 594  */
 595 static  BOOL            MMIO_Destroy(LPWINE_MMIO wm)
 596 {
 597     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 598     LPWINE_MMIO*        m;
 599
 600     EnterCriticalSection(&iData->cs);
 601     for (m = &(iData->lpMMIO); *m && *m != wm; m = &(*m)->lpNext);
 602     if (*m) {
 603         *m = (*m)->lpNext;
 604         HeapFree(GetProcessHeap(), 0, wm);
 605         wm = NULL;
 606     }
 607     LeaveCriticalSection(&iData->cs);
 608     return wm ? FALSE : TRUE;
 609 }
 610
 611 /****************************************************************
 612  *                      MMIO_Flush                      [INTERNAL]
 613  */
 614 static  LRESULT MMIO_Flush(WINE_MMIO* wm, UINT uFlags)
 615 {
 616     if (wm->info.cchBuffer && (wm->info.fccIOProc != FOURCC_MEM)) {
 617         /* not quite sure what to do here, but I'll guess */
 618         if (wm->info.dwFlags & MMIO_DIRTY) {
 619             MMIO_SendMessage(wm, MMIOM_SEEK, wm->info.lDiskOffset,
 620                              SEEK_SET, MMIO_PROC_32A);
 621             MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)wm->info.pchBuffer,
 622                              wm->info.pchNext - wm->info.pchBuffer, MMIO_PROC_32A);
 623         }
 624         if (uFlags & MMIO_EMPTYBUF)
 625             wm->info.pchNext = wm->info.pchBuffer;
 626     }
 627     wm->info.dwFlags &= ~MMIO_DIRTY;
 628
 629     return 0;
 630 }
 631
 632 /***************************************************************************
 633  *                      MMIO_GrabNextBuffer                     [INTERNAL]
 634  */
 635 static LONG     MMIO_GrabNextBuffer(LPWINE_MMIO wm, int for_read)
 636 {
 637     LONG        size = wm->info.cchBuffer;
 638
 639     TRACE("bo=%lx do=%lx of=%lx\n",
 640           wm->info.lBufOffset, wm->info.lDiskOffset,
 641           MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A));
 642
 643     wm->info.lBufOffset = wm->info.lDiskOffset;
 644     wm->info.pchNext = wm->info.pchBuffer;
 645     wm->info.pchEndRead = wm->info.pchBuffer;
 646     wm->info.pchEndWrite = wm->info.pchBuffer;
 647
 648     if (for_read) {
 649         size = MMIO_SendMessage(wm, MMIOM_READ, (LPARAM)wm->info.pchBuffer,
 650                                 size, MMIO_PROC_32A);
 651         if (size > 0)
 652             wm->info.pchEndRead += size;
 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, MMIO_EMPTYBUF) != 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 = PTR_SEG_TO_LIN(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 = WIN16_GlobalLock16(wm->hMem);
 709         wm->info.pchBuffer = (void*)PTR_SEG_TO_LIN((void*)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 */
 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.123]
 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.122]
 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.114]
 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, MMIO_EMPTYBUF)) != 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.124]
 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.133]
 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             } else
1018                 if (wm->info.fccIOProc == FOURCC_MEM) {
1019                     if (wm->info.adwInfo[0]) {
1020                         /* from where would we get the memory handle? */
1021                         FIXME("memory file expansion not implemented!\n");
1022                         break;
1023                     } else break;
1024                 }
1025
1026             if (wm->info.pchNext == wm->info.pchEndWrite) MMIO_Flush(wm, MMIO_EMPTYBUF);
1027             else break;
1028         }
1029     } else {
1030         bytesW = MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)pch, cch, MMIO_PROC_32A);
1031         wm->info.lBufOffset = wm->info.lDiskOffset;
1032     }
1033
1034     TRACE("bytes written=%ld\n", bytesW);
1035     return bytesW;
1036 }
1037
1038 /**************************************************************************
1039  *                              mmioWrite               [MMSYSTEM.1213]
1040  */
1041 LONG WINAPI mmioWrite16(HMMIO16 hmmio, HPCSTR pch, LONG cch)
1042 {
1043     return mmioWrite(hmmio,pch,cch);
1044 }
1045
1046 /**************************************************************************
1047  *                              mmioSeek                [MMSYSTEM.1214]
1048  */
1049 LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
1050 {
1051     LPWINE_MMIO wm;
1052     LONG        offset;
1053
1054     TRACE("(%04X, %08lX, %d);\n", hmmio, lOffset, iOrigin);
1055
1056     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1057         return MMSYSERR_INVALHANDLE;
1058
1059     /* not buffered, direct seek on file */
1060     if (!wm->info.pchBuffer)
1061         return MMIO_SendMessage(wm, MMIOM_SEEK, lOffset, iOrigin, MMIO_PROC_32A);
1062
1063     switch (iOrigin) {
1064     case SEEK_SET:
1065         offset = lOffset;
1066         break;
1067     case SEEK_CUR:
1068         offset = wm->info.lBufOffset + (wm->info.pchNext - wm->info.pchBuffer) + lOffset;
1069         break;
1070     case SEEK_END:
1071         if (wm->info.fccIOProc == FOURCC_MEM) {
1072             offset = wm->info.cchBuffer;
1073         } else {
1074             assert(MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A) == wm->info.lDiskOffset);
1075             offset = MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_END, MMIO_PROC_32A);
1076             MMIO_SendMessage(wm, MMIOM_SEEK, wm->info.lDiskOffset, SEEK_SET, MMIO_PROC_32A);
1077         }
1078         offset -= lOffset;
1079         break;
1080     default:
1081         return -1;
1082     }
1083
1084     /* stay in same buffer ? */
1085     /* some memory mapped buffers are defined with -1 as a size */
1086     if ((wm->info.cchBuffer > 0) &&
1087         ((offset < wm->info.lBufOffset) ||
1088          (offset >= wm->info.lBufOffset + wm->info.cchBuffer) ||
1089          !wm->bBufferLoaded)) {
1090
1091         /* condition to change buffer */
1092         if ((wm->info.fccIOProc == FOURCC_MEM) ||
1093             MMIO_Flush(wm, MMIO_EMPTYBUF) ||
1094             /* this also sets the wm->info.lDiskOffset field */
1095             MMIO_SendMessage(wm, MMIOM_SEEK,
1096                              (offset / wm->info.cchBuffer) * wm->info.cchBuffer,
1097                              SEEK_SET, MMIO_PROC_32A) == -1)
1098             return -1;
1099         MMIO_GrabNextBuffer(wm, TRUE);
1100     }
1101
1102     wm->info.pchNext = wm->info.pchBuffer + (offset - wm->info.lBufOffset);
1103
1104     TRACE("=> %ld\n", offset);
1105     return offset;
1106 }
1107
1108 /**************************************************************************
1109  *                              mmioSeek                [MMSYSTEM.1214]
1110  */
1111 LONG WINAPI mmioSeek16(HMMIO16 hmmio, LONG lOffset, INT16 iOrigin)
1112 {
1113     return mmioSeek(hmmio, lOffset, iOrigin);
1114 }
1115
1116 /**************************************************************************
1117  *                              mmioGetInfo             [MMSYSTEM.1215]
1118  */
1119 UINT16 WINAPI mmioGetInfo16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1120 {
1121     LPWINE_MMIO wm;
1122
1123     TRACE("mmioGetInfo\n");
1124
1125     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1126         return MMSYSERR_INVALHANDLE;
1127
1128     if (!wm->buffer16)
1129         return MMSYSERR_ERROR;
1130
1131     lpmmioinfo->dwFlags     = wm->info.dwFlags;
1132     lpmmioinfo->fccIOProc   = wm->info.fccIOProc;
1133     lpmmioinfo->pIOProc     = (LPMMIOPROC16)wm->info.pIOProc;
1134     lpmmioinfo->wErrorRet   = wm->info.wErrorRet;
1135     lpmmioinfo->hTask       = wm->info.hTask;
1136     lpmmioinfo->cchBuffer   = wm->info.cchBuffer;
1137     lpmmioinfo->pchBuffer   = (void*)wm->buffer16;
1138     lpmmioinfo->pchNext     = (void*)(wm->buffer16 + (wm->info.pchNext - wm->info.pchBuffer));
1139     lpmmioinfo->pchEndRead  = (void*)(wm->buffer16 + (wm->info.pchEndRead - wm->info.pchBuffer));
1140     lpmmioinfo->pchEndWrite = (void*)(wm->buffer16 + (wm->info.pchEndWrite - wm->info.pchBuffer));
1141     lpmmioinfo->lBufOffset  = wm->info.lBufOffset;
1142     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1143     lpmmioinfo->adwInfo[0]  = wm->info.adwInfo[0];
1144     lpmmioinfo->adwInfo[1]  = wm->info.adwInfo[1];
1145     lpmmioinfo->adwInfo[2]  = wm->info.adwInfo[2];
1146     lpmmioinfo->adwInfo[3]  = wm->info.adwInfo[3];
1147     lpmmioinfo->dwReserved1 = 0;
1148     lpmmioinfo->dwReserved2 = 0;
1149     lpmmioinfo->hmmio = wm->info.hmmio;
1150
1151     return 0;
1152 }
1153
1154 /**************************************************************************
1155  *                              mmioGetInfo             [WINMM.118]
1156  */
1157 UINT WINAPI mmioGetInfo(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1158 {
1159     LPWINE_MMIO         wm;
1160
1161     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1162
1163     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1164         return MMSYSERR_INVALHANDLE;
1165
1166     memcpy(lpmmioinfo, &wm->info, sizeof(MMIOINFO));
1167
1168     return 0;
1169 }
1170
1171 /**************************************************************************
1172  *                              mmioSetInfo16           [MMSYSTEM.1216]
1173  */
1174 UINT16 WINAPI mmioSetInfo16(HMMIO16 hmmio, const MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1175 {
1176     LPWINE_MMIO         wm;
1177
1178     TRACE("mmioSetInfo\n");
1179
1180     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1181         return MMSYSERR_INVALHANDLE;
1182
1183     /* check if seg and lin buffers are the same */
1184     if (wm->info.cchBuffer != lpmmioinfo->cchBuffer ||
1185         wm->info.pchBuffer != PTR_SEG_TO_LIN((void*)wm->buffer16))
1186         return MMSYSERR_INVALPARAM;
1187
1188     /* check pointers coherence */
1189     if (lpmmioinfo->pchNext < lpmmioinfo->pchBuffer ||
1190         lpmmioinfo->pchNext > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1191         lpmmioinfo->pchEndRead < lpmmioinfo->pchBuffer ||
1192         lpmmioinfo->pchEndRead > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1193         lpmmioinfo->pchEndWrite < lpmmioinfo->pchBuffer ||
1194         lpmmioinfo->pchEndWrite > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer)
1195         return MMSYSERR_INVALPARAM;
1196
1197     wm->info.pchNext     = wm->info.pchBuffer + (lpmmioinfo->pchNext     - lpmmioinfo->pchBuffer);
1198     wm->info.pchEndRead  = wm->info.pchBuffer + (lpmmioinfo->pchEndRead  - lpmmioinfo->pchBuffer);
1199     wm->info.pchEndWrite = wm->info.pchBuffer + (lpmmioinfo->pchEndWrite - lpmmioinfo->pchBuffer);
1200
1201     return 0;
1202 }
1203
1204 /**************************************************************************
1205  *                              mmioSetInfo             [WINMM.130]
1206  */
1207 UINT WINAPI mmioSetInfo(HMMIO hmmio, const MMIOINFO* lpmmioinfo, UINT uFlags)
1208 {
1209     LPWINE_MMIO         wm;
1210
1211     TRACE("mmioSetInfo\n");
1212
1213     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1214         return MMSYSERR_INVALHANDLE;
1215
1216     /* check pointers coherence */
1217     if (lpmmioinfo->pchNext < wm->info.pchBuffer ||
1218         lpmmioinfo->pchNext > wm->info.pchBuffer + wm->info.cchBuffer ||
1219         lpmmioinfo->pchEndRead < wm->info.pchBuffer ||
1220         lpmmioinfo->pchEndRead > wm->info.pchBuffer + wm->info.cchBuffer ||
1221         lpmmioinfo->pchEndWrite < wm->info.pchBuffer ||
1222         lpmmioinfo->pchEndWrite > wm->info.pchBuffer + wm->info.cchBuffer)
1223         return MMSYSERR_INVALPARAM;
1224
1225     wm->info.pchNext = lpmmioinfo->pchNext;
1226     wm->info.pchEndRead = lpmmioinfo->pchEndRead;
1227
1228     return 0;
1229 }
1230
1231 /**************************************************************************
1232 *                               mmioSetBuffer           [WINMM.129]
1233 */
1234 UINT WINAPI mmioSetBuffer(HMMIO hmmio, LPSTR pchBuffer, LONG cchBuffer, UINT uFlags)
1235 {
1236     LPWINE_MMIO         wm;
1237
1238     TRACE("(hmmio=%04x, pchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1239           hmmio, pchBuffer, cchBuffer, uFlags);
1240
1241     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1242         return MMSYSERR_INVALHANDLE;
1243
1244     return MMIO_SetBuffer(wm, pchBuffer, cchBuffer, uFlags, TRUE);
1245 }
1246
1247 /**************************************************************************
1248  *                              mmioSetBuffer           [MMSYSTEM.1217]
1249  */
1250 UINT16 WINAPI mmioSetBuffer16(HMMIO16 hmmio, LPSTR segpchBuffer,
1251                               LONG cchBuffer, UINT16 uFlags)
1252 {
1253     LPWINE_MMIO         wm;
1254
1255     TRACE("(hmmio=%04x, segpchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1256           hmmio, segpchBuffer, cchBuffer, uFlags);
1257
1258     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1259         return MMSYSERR_INVALHANDLE;
1260
1261     return MMIO_SetBuffer(wm, segpchBuffer, cchBuffer, uFlags, FALSE);
1262 }
1263
1264 /**************************************************************************
1265  *                              mmioFlush               [WINMM.117]
1266  */
1267 UINT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
1268 {
1269     LPWINE_MMIO         wm;
1270
1271     TRACE("(%04X, %04X)\n", hmmio, uFlags);
1272
1273     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1274         return MMSYSERR_INVALHANDLE;
1275
1276     return MMIO_Flush(wm, uFlags);
1277 }
1278
1279 /**************************************************************************
1280  *                              mmioFlush               [MMSYSTEM.1218]
1281  */
1282 UINT16 WINAPI mmioFlush16(HMMIO16 hmmio, UINT16 uFlags)
1283 {
1284     return mmioFlush(hmmio, uFlags);
1285 }
1286
1287 /**************************************************************************
1288  *                              mmioAdvance             [MMSYSTEM.1219]
1289  */
1290 UINT WINAPI mmioAdvance(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1291 {
1292     LPWINE_MMIO         wm;
1293
1294     TRACE("hmmio=%04X, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
1295
1296     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1297         return MMSYSERR_INVALHANDLE;
1298
1299     if (!wm->info.cchBuffer)
1300         return MMIOERR_UNBUFFERED;
1301
1302     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1303         return MMSYSERR_INVALPARAM;
1304
1305     if (MMIO_Flush(wm, MMIO_EMPTYBUF))
1306         return MMIOERR_CANNOTWRITE;
1307
1308     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1309
1310     lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1311     lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1312         (wm->info.pchEndRead - wm->info.pchBuffer);
1313     lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1314         (wm->info.pchEndWrite - wm->info.pchBuffer);
1315     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1316     lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1317     return 0;
1318 }
1319
1320 /***********************************************************************
1321  *                              mmioAdvance             [MMSYSTEM.1219]
1322  */
1323 UINT16 WINAPI mmioAdvance16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1324 {
1325     LPWINE_MMIO         wm;
1326
1327     TRACE("mmioAdvance\n");
1328
1329     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1330         return MMSYSERR_INVALHANDLE;
1331
1332     if (!wm->info.cchBuffer)
1333         return MMIOERR_UNBUFFERED;
1334
1335     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1336         return MMSYSERR_INVALPARAM;
1337
1338     if (MMIO_Flush(wm, MMIO_EMPTYBUF))
1339         return MMIOERR_CANNOTWRITE;
1340
1341     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1342
1343     lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1344     lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1345         (wm->info.pchEndRead - wm->info.pchBuffer);
1346     lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1347         (wm->info.pchEndWrite - wm->info.pchBuffer);
1348     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1349     lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1350
1351     return 0;
1352 }
1353
1354 /**************************************************************************
1355  *                              mmioStringToFOURCCA     [WINMM.131]
1356  */
1357 FOURCC WINAPI mmioStringToFOURCCA(LPCSTR sz, UINT uFlags)
1358 {
1359     CHAR cc[4];
1360     int i = 0;
1361
1362     for (i = 0; i < 4 && sz[i]; i++) {
1363         if (uFlags & MMIO_TOUPPER) {
1364             cc[i] = toupper(sz[i]);
1365         } else {
1366             cc[i] = sz[i];
1367         }
1368     }
1369
1370     /* Pad with spaces */
1371     while (i < 4) {
1372         cc[i] = ' ';
1373         i++;
1374     }
1375
1376     TRACE("Got %c%c%c%c\n",cc[0],cc[1],cc[2],cc[3]);
1377     return mmioFOURCC(cc[0],cc[1],cc[2],cc[3]);
1378 }
1379
1380 /**************************************************************************
1381  *                              mmioStringToFOURCCW     [WINMM.132]
1382  */
1383 FOURCC WINAPI mmioStringToFOURCCW(LPCWSTR sz, UINT uFlags)
1384 {
1385     LPSTR       szA = HEAP_strdupWtoA(GetProcessHeap(),0,sz);
1386     FOURCC      ret = mmioStringToFOURCCA(szA,uFlags);
1387
1388     HeapFree(GetProcessHeap(),0,szA);
1389     return ret;
1390 }
1391
1392 /**************************************************************************
1393  *                              mmioStringToFOURCC      [MMSYSTEM.1220]
1394  */
1395 FOURCC WINAPI mmioStringToFOURCC16(LPCSTR sz, UINT16 uFlags)
1396 {
1397     return mmioStringToFOURCCA(sz, uFlags);
1398 }
1399
1400 /**************************************************************************
1401  *              mmioInstallIOProc16    [MMSYSTEM.1221]
1402  */
1403 LPMMIOPROC16 WINAPI mmioInstallIOProc16(FOURCC fccIOProc, LPMMIOPROC16 pIOProc,
1404                                         DWORD dwFlags)
1405 {
1406     return (LPMMIOPROC16)MMIO_InstallIOProc(fccIOProc, (LPMMIOPROC)pIOProc,
1407                                             dwFlags, MMIO_PROC_16);
1408 }
1409
1410 /**************************************************************************
1411  *                              mmioInstallIOProcA         [WINMM.120]
1412  */
1413 LPMMIOPROC WINAPI mmioInstallIOProcA(FOURCC fccIOProc,
1414                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1415 {
1416     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32A);
1417 }
1418
1419 /**************************************************************************
1420  *                              mmioInstallIOProcW         [WINMM.]
1421  */
1422 LPMMIOPROC WINAPI mmioInstallIOProcW(FOURCC fccIOProc,
1423                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1424 {
1425     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32W);
1426 }
1427
1428 /**************************************************************************
1429  *                              mmioSendMessage16       [MMSYSTEM.1222]
1430  */
1431 LRESULT WINAPI mmioSendMessage16(HMMIO16 hmmio, UINT16 uMessage,
1432                                  LPARAM lParam1, LPARAM lParam2)
1433 {
1434     LPWINE_MMIO         wm;
1435
1436     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1437
1438     if (uMessage < MMIOM_USER)
1439         return MMSYSERR_INVALPARAM;
1440
1441     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1442         return MMSYSERR_INVALHANDLE;
1443
1444     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_16);
1445 }
1446
1447 /**************************************************************************
1448  *                              mmioSendMessage         [WINMM.]
1449  */
1450 LRESULT WINAPI mmioSendMessage(HMMIO hmmio, UINT uMessage,
1451                                LPARAM lParam1, LPARAM lParam2)
1452 {
1453     LPWINE_MMIO         wm;
1454
1455     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1456
1457     if (uMessage < MMIOM_USER)
1458         return MMSYSERR_INVALPARAM;
1459
1460     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1461         return MMSYSERR_INVALHANDLE;
1462
1463     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_32A);
1464 }
1465
1466 /**************************************************************************
1467  *                              mmioDescend             [MMSYSTEM.1223]
1468  */
1469 UINT WINAPI mmioDescend(HMMIO hmmio, LPMMCKINFO lpck,
1470                         const MMCKINFO* lpckParent, UINT uFlags)
1471 {
1472     DWORD               dwOldPos;
1473     FOURCC              srchCkId;
1474     FOURCC              srchType;
1475
1476
1477     TRACE("(%04X, %p, %p, %04X);\n", hmmio, lpck, lpckParent, uFlags);
1478
1479     if (lpck == NULL)
1480         return MMSYSERR_INVALPARAM;
1481
1482     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1483     TRACE("dwOldPos=%ld\n", dwOldPos);
1484
1485     if (lpckParent != NULL) {
1486         TRACE("seek inside parent at %ld !\n", lpckParent->dwDataOffset);
1487         /* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
1488         if (dwOldPos < lpckParent->dwDataOffset ||
1489             dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
1490             WARN("outside parent chunk\n");
1491             return MMIOERR_CHUNKNOTFOUND;
1492         }
1493     }
1494
1495     /* The SDK docu says 'ckid' is used for all cases. Real World
1496      * examples disagree -Marcus,990216.
1497      */
1498
1499     srchType = 0;
1500     /* find_chunk looks for 'ckid' */
1501     if (uFlags & MMIO_FINDCHUNK)
1502         srchCkId = lpck->ckid;
1503     /* find_riff and find_list look for 'fccType' */
1504     if (uFlags & MMIO_FINDLIST) {
1505         srchCkId = FOURCC_LIST;
1506         srchType = lpck->fccType;
1507     }
1508     if (uFlags & MMIO_FINDRIFF) {
1509         srchCkId = FOURCC_RIFF;
1510         srchType = lpck->fccType;
1511     }
1512
1513     if (uFlags & (MMIO_FINDCHUNK|MMIO_FINDLIST|MMIO_FINDRIFF)) {
1514         TRACE("searching for %.4s.%.4s\n",
1515               (LPSTR)&srchCkId,
1516               srchType?(LPSTR)&srchType:"any ");
1517
1518         while (TRUE) {
1519             LONG ix;
1520
1521             ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
1522             if (ix < 2*sizeof(DWORD)) {
1523                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1524                 WARN("return ChunkNotFound\n");
1525                 return MMIOERR_CHUNKNOTFOUND;
1526             }
1527             lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1528             if (ix < lpck->dwDataOffset - dwOldPos) {
1529                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1530                 WARN("return ChunkNotFound\n");
1531                 return MMIOERR_CHUNKNOTFOUND;
1532             }
1533             TRACE("ckid=%.4s fcc=%.4s cksize=%08lX !\n",
1534                   (LPSTR)&lpck->ckid,
1535                   srchType?(LPSTR)&lpck->fccType:"<na>",
1536                   lpck->cksize);
1537             if ((srchCkId == lpck->ckid) &&
1538                 (!srchType || (srchType == lpck->fccType))
1539                 )
1540                 break;
1541
1542             dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
1543             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1544         }
1545     } else {
1546         /* FIXME: unverified, does it do this? */
1547         /* NB: This part is used by WAVE_mciOpen, among others */
1548         if (mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD)) < 3 * sizeof(DWORD)) {
1549             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1550             WARN("return ChunkNotFound 2nd\n");
1551             return MMIOERR_CHUNKNOTFOUND;
1552         }
1553         lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1554     }
1555     lpck->dwFlags = 0;
1556     /* If we were looking for RIFF/LIST chunks, the final file position
1557      * is after the chunkid. If we were just looking for the chunk
1558      * it is after the cksize. So add 4 in RIFF/LIST case.
1559      */
1560     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1561         mmioSeek(hmmio, lpck->dwDataOffset + sizeof(DWORD), SEEK_SET);
1562     else
1563         mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
1564     TRACE("lpck: ckid=%.4s, cksize=%ld, dwDataOffset=%ld fccType=%08lX (%.4s)!\n",
1565           (LPSTR)&lpck->ckid, lpck->cksize, lpck->dwDataOffset,
1566           lpck->fccType, srchType?(LPSTR)&lpck->fccType:"");
1567     return 0;
1568 }
1569
1570 /**************************************************************************
1571  *                              mmioDescend16           [MMSYSTEM.1223]
1572  */
1573 UINT16 WINAPI mmioDescend16(HMMIO16 hmmio, LPMMCKINFO lpck,
1574                             const MMCKINFO* lpckParent, UINT16 uFlags)
1575 {
1576     return mmioDescend(hmmio, lpck, lpckParent, uFlags);
1577 }
1578
1579 /**************************************************************************
1580  *                              mmioAscend              [WINMM.113]
1581  */
1582 UINT WINAPI mmioAscend(HMMIO hmmio, LPMMCKINFO lpck, UINT uFlags)
1583 {
1584     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1585
1586     if (lpck->dwFlags & MMIO_DIRTY) {
1587         DWORD   dwOldPos, dwNewSize, dwSizePos;
1588
1589         TRACE("chunk is marked MMIO_DIRTY, correcting chunk size\n");
1590         dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1591         TRACE("dwOldPos=%ld\n", dwOldPos);
1592         dwNewSize = dwOldPos - lpck->dwDataOffset;
1593         if (dwNewSize != lpck->cksize) {
1594             TRACE("dwNewSize=%ld\n", dwNewSize);
1595             lpck->cksize = dwNewSize;
1596
1597             dwSizePos = lpck->dwDataOffset - sizeof(DWORD);
1598             TRACE("dwSizePos=%ld\n", dwSizePos);
1599
1600             mmioSeek(hmmio, dwSizePos, SEEK_SET);
1601             mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
1602         }
1603     }
1604
1605     mmioSeek(hmmio, lpck->dwDataOffset + ((lpck->cksize + 1) & ~1), SEEK_SET);
1606
1607     return 0;
1608 }
1609
1610 /**************************************************************************
1611  *                              mmioAscend              [MMSYSTEM.1224]
1612  */
1613 UINT16 WINAPI mmioAscend16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1614 {
1615     return mmioAscend(hmmio,lpck,uFlags);
1616 }
1617
1618 /**************************************************************************
1619  *                              mmioCreateChunk         [MMSYSTEM.1225]
1620  */
1621 UINT16 WINAPI mmioCreateChunk16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1622 {
1623     DWORD       dwOldPos;
1624     LONG        size;
1625     LONG        ix;
1626
1627     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1628
1629     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1630     TRACE("dwOldPos=%ld\n", dwOldPos);
1631
1632     if (uFlags == MMIO_CREATELIST)
1633         lpck->ckid = FOURCC_LIST;
1634     else if (uFlags == MMIO_CREATERIFF)
1635         lpck->ckid = FOURCC_RIFF;
1636
1637     TRACE("ckid=%08lX\n", lpck->ckid);
1638
1639     size = 2 * sizeof(DWORD);
1640     lpck->dwDataOffset = dwOldPos + size;
1641
1642     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1643         size += sizeof(DWORD);
1644     lpck->dwFlags = MMIO_DIRTY;
1645
1646     ix = mmioWrite(hmmio, (LPSTR)lpck, size);
1647     TRACE("after mmioWrite ix = %ld req = %ld, errno = %d\n",ix, size, errno);
1648     if (ix < size) {
1649         mmioSeek(hmmio, dwOldPos, SEEK_SET);
1650         WARN("return CannotWrite\n");
1651         return MMIOERR_CANNOTWRITE;
1652     }
1653
1654     return 0;
1655 }
1656
1657 /**************************************************************************
1658  *                      mmioCreateChunk                         [WINMM.115]
1659  */
1660 UINT WINAPI mmioCreateChunk(HMMIO hmmio, MMCKINFO* lpck, UINT uFlags)
1661 {
1662     return mmioCreateChunk16(hmmio, lpck, uFlags);
1663 }
1664
1665 /**************************************************************************
1666  *                              mmioRename              [MMSYSTEM.1226]
1667  */
1668 UINT16 WINAPI mmioRename16(LPCSTR szFileName, LPCSTR szNewFileName,
1669                            MMIOINFO16* lpmmioinfo, DWORD dwRenameFlags)
1670 {
1671     UINT16              result = MMSYSERR_ERROR;
1672     LPMMIOPROC16        ioProc;
1673
1674     TRACE("('%s', '%s', %p, %08lX);\n",
1675           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1676
1677     /* If both params are NULL, then parse the file name */
1678     if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1679         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1680
1681     /* Handle any unhandled/error case from above. Assume DOS file */
1682     if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL))
1683         ioProc = (LPMMIOPROC16)mmioDosIOProc;
1684     /* if just the four character code is present, look up IO proc */
1685     else if (lpmmioinfo->pIOProc == NULL)
1686         ioProc = mmioInstallIOProc16(lpmmioinfo->fccIOProc, NULL, MMIO_FINDPROC);
1687     else
1688         ioProc = lpmmioinfo->pIOProc;
1689
1690     /* FIXME: ioProc is likely a segmented address, thus needing a
1691      * thunk somewhere. The main issue is that Wine's current thunking
1692      * 32 to 16 only supports pascal calling convention
1693      */
1694     if (ioProc)
1695         result = (ioProc)(0, MMIOM_RENAME,
1696                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1697
1698     return result;
1699 }
1700
1701 /**************************************************************************
1702  *                              mmioRenameA                     [WINMM.125]
1703  */
1704 UINT WINAPI mmioRenameA(LPCSTR szFileName, LPCSTR szNewFileName,
1705                         MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1706 {
1707     UINT        result = MMSYSERR_ERROR;
1708     LPMMIOPROC  ioProc;
1709
1710     TRACE("('%s', '%s', %p, %08lX);\n",
1711           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1712
1713     /* If both params are NULL, then parse the file name */
1714     if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1715         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1716
1717     /* Handle any unhandled/error case from above. Assume DOS file */
1718     if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL))
1719         ioProc = (LPMMIOPROC)mmioDosIOProc;
1720     /* if just the four character code is present, look up IO proc */
1721     else if (lpmmioinfo->pIOProc == NULL)
1722         ioProc = MMIO_InstallIOProc(lpmmioinfo->fccIOProc, NULL,
1723                                     MMIO_FINDPROC, MMIO_PROC_32A);
1724     else /* use relevant ioProc */
1725         ioProc = lpmmioinfo->pIOProc;
1726
1727     if (ioProc)
1728         result = (ioProc)(0, MMIOM_RENAME,
1729                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1730
1731     return result;
1732 }
1733
1734 /**************************************************************************
1735  *                              mmioRenameW                     [WINMM.126]
1736  */
1737 UINT WINAPI mmioRenameW(LPCWSTR szFileName, LPCWSTR szNewFileName,
1738                         MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1739 {
1740     LPSTR       szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
1741     LPSTR       sznFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szNewFileName);
1742     UINT        ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwRenameFlags);
1743
1744     HeapFree(GetProcessHeap(),0,szFn);
1745     HeapFree(GetProcessHeap(),0,sznFn);
1746     return ret;
1747 }