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  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 /* Still to be done:
  25  *      + correct handling of global/local IOProcs
  26  *      + mode of mmio objects is not used (read vs write vs readwrite)
  27  *      + optimization of internal buffers (seg / lin)
  28  *      + even in 32 bit only, a seg ptr IO buffer is allocated (after this is
  29  *        fixed, we'll have a proper 32/16 separation)
  30  *      + thread safeness
  31  *      + rename operation is broken
  32  */
  33
  34 #include <ctype.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <errno.h>
  38 #include <assert.h>
  39
  40 #include "mmsystem.h"
  41 #include "windef.h"
  42
  43 #include "wine/mmsystem16.h"
  44 #include "wine/winbase16.h"
  45 #include "heap.h"
  46 #include "winemm.h"
  47
  48 #include "wine/debug.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(mmio);
  51
  52 /**************************************************************************
  53  *                      mmioDosIOProc                           [internal]
  54  */
  55 static LRESULT CALLBACK mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
  56                                       LPARAM lParam1, LPARAM lParam2)
  57 {
  58     LRESULT     ret = MMSYSERR_NOERROR;
  59
  60     TRACE("(%p, %X, 0x%lx, 0x%lx);\n", lpmmioinfo, uMessage, lParam1, lParam2);
  61
  62     switch (uMessage) {
  63     case MMIOM_OPEN:
  64         {
  65             /* Parameters:
  66              * lParam1 = szFileName parameter from mmioOpen
  67              * lParam2 = reserved (we use it for 16-bitness)
  68              * Returns: zero on success, error code on error
  69              * NOTE: lDiskOffset automatically set to zero
  70              */
  71             OFSTRUCT    ofs;
  72             LPCSTR      szFileName = (LPCSTR)lParam1;
  73
  74             if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
  75                 FIXME("MMIO_GETTEMP not implemented\n");
  76                 return MMIOERR_CANNOTOPEN;
  77             }
  78
  79             /* if filename NULL, assume open file handle in adwInfo[0] */
  80             if (!szFileName) {
  81                 if (lParam2)
  82                     lpmmioinfo->adwInfo[0] = DosFileHandleToWin32Handle(lpmmioinfo->adwInfo[0]);
  83                 break;
  84             }
  85             lpmmioinfo->adwInfo[0] = (DWORD)OpenFile(szFileName, &ofs, lpmmioinfo->dwFlags & 0xFFFF);
  86             if (lpmmioinfo->adwInfo[0] == (DWORD)HFILE_ERROR)
  87                 ret = MMIOERR_CANNOTOPEN;
  88         }
  89         break;
  90
  91     case MMIOM_CLOSE:
  92         /* Parameters:
  93          * lParam1 = wFlags parameter from mmioClose
  94          * lParam2 = unused
  95          * Returns: zero on success, error code on error
  96          */
  97         if (!(lParam1 & MMIO_FHOPEN))
  98             _lclose((HFILE)lpmmioinfo->adwInfo[0]);
  99         break;
 100
 101     case MMIOM_READ:
 102         /* Parameters:
 103          * lParam1 = huge pointer to read buffer
 104          * lParam2 = number of bytes to read
 105          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
 106          *         in wErrorRet)
 107          */
 108         ret = _lread((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
 109         if (ret != -1)
 110             lpmmioinfo->lDiskOffset += ret;
 111
 112         break;
 113
 114     case MMIOM_WRITE:
 115     case MMIOM_WRITEFLUSH:
 116         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 117
 118         /* Parameters:
 119          * lParam1 = huge pointer to write buffer
 120          * lParam2 = number of bytes to write
 121          * Returns: number of bytes written, -1 for error (error code in
 122          *              wErrorRet)
 123          */
 124         ret = _hwrite((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
 125         if (ret != -1)
 126             lpmmioinfo->lDiskOffset += ret;
 127         break;
 128
 129     case MMIOM_SEEK:
 130         /* Parameters:
 131          * lParam1 = new position
 132          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 133          * Returns: new file postion, -1 on error
 134          */
 135         ret = _llseek((HFILE)lpmmioinfo->adwInfo[0], (LONG)lParam1, (LONG)lParam2);
 136         if (ret != -1)
 137             lpmmioinfo->lDiskOffset = ret;
 138         return ret;
 139
 140     case MMIOM_RENAME:
 141         /* Parameters:
 142          * lParam1 = old name
 143          * lParam2 = new name
 144          * Returns: zero on success, non-zero on failure
 145          */
 146          if (!MoveFileA((const char*)lParam1, (const char*)lParam2))
 147              ret = MMIOERR_FILENOTFOUND;
 148          break;
 149
 150     default:
 151         FIXME("unexpected message %u\n", uMessage);
 152         return 0;
 153     }
 154
 155     return ret;
 156 }
 157
 158 /**************************************************************************
 159  *                      mmioMemIOProc                           [internal]
 160  */
 161 static LRESULT CALLBACK mmioMemIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
 162                                       LPARAM lParam1, LPARAM lParam2)
 163 {
 164     TRACE("(%p,0x%04x,0x%08lx,0x%08lx)\n", lpmmioinfo, uMessage, lParam1, lParam2);
 165
 166     switch (uMessage) {
 167
 168     case MMIOM_OPEN:
 169         /* Parameters:
 170          * lParam1 = filename (must be NULL)
 171          * lParam2 = reserved (we use it for 16-bitness)
 172          * Returns: zero on success, error code on error
 173          * NOTE: lDiskOffset automatically set to zero
 174          */
 175         /* FIXME: io proc shouldn't change it */
 176         if (!(lpmmioinfo->dwFlags & MMIO_CREATE))
 177             lpmmioinfo->pchEndRead = lpmmioinfo->pchEndWrite;
 178         lpmmioinfo->adwInfo[0] = HFILE_ERROR;
 179         return 0;
 180
 181     case MMIOM_CLOSE:
 182         /* Parameters:
 183          * lParam1 = wFlags parameter from mmioClose
 184          * lParam2 = unused
 185          * Returns: zero on success, error code on error
 186          */
 187         return 0;
 188
 189     case MMIOM_READ:
 190         /* Parameters:
 191          * lParam1 = huge pointer to read buffer
 192          * lParam2 = number of bytes to read
 193          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
 194          *         in wErrorRet)
 195          * NOTE: lDiskOffset should be updated
 196          */
 197         FIXME("MMIOM_READ on memory files should not occur, buffer may be lost!\n");
 198         return 0;
 199
 200     case MMIOM_WRITE:
 201     case MMIOM_WRITEFLUSH:
 202         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 203
 204         /* Parameters:
 205          * lParam1 = huge pointer to write buffer
 206          * lParam2 = number of bytes to write
 207          * Returns: number of bytes written, -1 for error (error code in
 208          *              wErrorRet)
 209          * NOTE: lDiskOffset should be updated
 210          */
 211         FIXME("MMIOM_WRITE on memory files should not occur, buffer may be lost!\n");
 212         return 0;
 213
 214     case MMIOM_SEEK:
 215         /* Parameters:
 216          * lParam1 = new position
 217          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 218          * Returns: new file postion, -1 on error
 219          * NOTE: lDiskOffset should be updated
 220          */
 221         FIXME("MMIOM_SEEK on memory files should not occur, buffer may be lost!\n");
 222         return -1;
 223
 224     default:
 225         FIXME("unexpected message %u\n", uMessage);
 226         return 0;
 227     }
 228
 229     return 0;
 230 }
 231
 232
 233 enum mmioProcType {MMIO_PROC_16,MMIO_PROC_32A,MMIO_PROC_32W};
 234
 235 struct IOProcList
 236 {
 237     struct IOProcList*pNext;       /* Next item in linked list */
 238     FOURCC            fourCC;      /* four-character code identifying IOProc */
 239     LPMMIOPROC        pIOProc;     /* pointer to IProc */
 240     enum mmioProcType type;        /* 16, 32A or 32W */
 241     int               count;       /* number of objects linked to it */
 242 };
 243
 244 /* This array will be the entire list for most apps */
 245
 246 static struct IOProcList defaultProcs[] = {
 247     {&defaultProcs[1], FOURCC_DOS, (LPMMIOPROC)mmioDosIOProc, MMIO_PROC_32A, 0},
 248     {NULL,             FOURCC_MEM, (LPMMIOPROC)mmioMemIOProc, MMIO_PROC_32A, 0},
 249 };
 250
 251 static struct IOProcList*       pIOProcListAnchor = &defaultProcs[0];
 252
 253 /****************************************************************
 254  *              MMIO_FindProcNode                       [INTERNAL]
 255  *
 256  * Finds the ProcList node associated with a given FOURCC code.
 257  */
 258 static struct IOProcList*       MMIO_FindProcNode(FOURCC fccIOProc)
 259 {
 260     struct IOProcList*  pListNode;
 261
 262     for (pListNode = pIOProcListAnchor; pListNode; pListNode = pListNode->pNext) {
 263         if (pListNode->fourCC == fccIOProc) {
 264             return pListNode;
 265         }
 266     }
 267     return NULL;
 268 }
 269
 270 /****************************************************************
 271  *              MMIO_InstallIOProc                      [INTERNAL]
 272  */
 273 static LPMMIOPROC MMIO_InstallIOProc(FOURCC fccIOProc, LPMMIOPROC pIOProc,
 274                                      DWORD dwFlags, enum mmioProcType type)
 275 {
 276     LPMMIOPROC          lpProc = NULL;
 277     struct IOProcList*  pListNode;
 278     struct IOProcList** ppListNode;
 279
 280     TRACE("(%ld, %p, %08lX, %i)\n", fccIOProc, pIOProc, dwFlags, type);
 281
 282     if (dwFlags & MMIO_GLOBALPROC)
 283         FIXME("Global procedures not implemented\n");
 284
 285     /* just handle the known procedures for now */
 286     switch (dwFlags & (MMIO_INSTALLPROC|MMIO_REMOVEPROC|MMIO_FINDPROC)) {
 287     case MMIO_INSTALLPROC:
 288         /* Create new entry for the IOProc list */
 289         pListNode = HeapAlloc(GetProcessHeap(), 0, sizeof(*pListNode));
 290         if (pListNode) {
 291             /* Fill in this node */
 292             pListNode->fourCC = fccIOProc;
 293             pListNode->pIOProc = pIOProc;
 294             pListNode->type = type;
 295             pListNode->count = 0;
 296
 297             /* Stick it on the end of the list */
 298             pListNode->pNext = pIOProcListAnchor;
 299             pIOProcListAnchor = pListNode;
 300
 301             /* Return this IOProc - that's how the caller knows we succeeded */
 302             lpProc = pIOProc;
 303         }
 304         break;
 305
 306     case MMIO_REMOVEPROC:
 307         /*
 308          * Search for the node that we're trying to remove - note
 309          * that this method won't find the first item on the list, but
 310          * since the first two items on this list are ones we won't
 311          * let the user delete anyway, that's okay
 312          */
 313         ppListNode = &pIOProcListAnchor;
 314         while ((*ppListNode) && (*ppListNode)->fourCC != fccIOProc)
 315             ppListNode = &((*ppListNode)->pNext);
 316
 317         if (*ppListNode) { /* found it */
 318             /* FIXME: what should be done if an open mmio object uses this proc ?
 319              * shall we return an error, nuke the mmio object ?
 320              */
 321             if ((*ppListNode)->count) {
 322                 ERR("Cannot remove a mmIOProc while in use\n");
 323                 break;
 324             }
 325             /* remove it, but only if it isn't builtin */
 326             if ((*ppListNode) >= defaultProcs &&
 327                 (*ppListNode) < defaultProcs + sizeof(defaultProcs)) {
 328                 WARN("Tried to remove built-in mmio proc. Skipping\n");
 329             } else {
 330                 /* Okay, nuke it */
 331                 struct IOProcList*  ptmpNode = *ppListNode;
 332                 lpProc = (*ppListNode)->pIOProc;
 333                 *ppListNode = (*ppListNode)->pNext;
 334                 HeapFree(GetProcessHeap(), 0, ptmpNode);
 335             }
 336         }
 337         break;
 338
 339     case MMIO_FINDPROC:
 340         if ((pListNode = MMIO_FindProcNode(fccIOProc))) {
 341             lpProc = pListNode->pIOProc;
 342         }
 343         break;
 344     }
 345
 346     return lpProc;
 347 }
 348
 349 /****************************************************************
 350  *                      MMIO_Map32To16                  [INTERNAL]
 351  */
 352 static LRESULT  MMIO_Map32To16(DWORD wMsg, LPARAM* lp1, LPARAM* lp2)
 353 {
 354     switch (wMsg) {
 355     case MMIOM_CLOSE:
 356     case MMIOM_SEEK:
 357         /* nothing to do */
 358         break;
 359     case MMIOM_OPEN:
 360     case MMIOM_READ:
 361     case MMIOM_WRITE:
 362     case MMIOM_WRITEFLUSH:
 363         *lp1 = MapLS( (void *)*lp1 );
 364         break;
 365     default:
 366         TRACE("Not a mappable message (%ld)\n", wMsg);
 367     }
 368     return MMSYSERR_NOERROR;
 369 }
 370
 371 /****************************************************************
 372  *              MMIO_UnMap32To16                        [INTERNAL]
 373  */
 374 static LRESULT  MMIO_UnMap32To16(DWORD wMsg, LPARAM lParam1, LPARAM lParam2,
 375                                  LPARAM lp1, LPARAM lp2)
 376 {
 377     switch (wMsg) {
 378     case MMIOM_CLOSE:
 379     case MMIOM_SEEK:
 380         /* nothing to do */
 381         break;
 382     case MMIOM_OPEN:
 383     case MMIOM_READ:
 384     case MMIOM_WRITE:
 385     case MMIOM_WRITEFLUSH:
 386         UnMapLS( lp1 );
 387         break;
 388     default:
 389         TRACE("Not a mappable message (%ld)\n", wMsg);
 390     }
 391     return MMSYSERR_NOERROR;
 392 }
 393
 394 /****************************************************************
 395  *              MMIO_SendMessage                        [INTERNAL]
 396  */
 397 static LRESULT  MMIO_SendMessage(LPWINE_MMIO wm, DWORD wMsg, LPARAM lParam1,
 398                                  LPARAM lParam2, enum mmioProcType type)
 399 {
 400     MMIOINFO16 mmioInfo16;
 401     LRESULT             result;
 402     SEGPTR              segmmioInfo16;
 403     LPARAM              lp1 = lParam1, lp2 = lParam2;
 404
 405     if (!wm->ioProc || !wm->info.pIOProc) {
 406         ERR("brrr\n");
 407         result = MMSYSERR_INVALPARAM;
 408     }
 409
 410     switch (wm->ioProc->type) {
 411     case MMIO_PROC_16:
 412         memset( &mmioInfo16, 0, sizeof(MMIOINFO16));
 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         if (wm->ioProc->type != type) {
 419             /* map (lParam1, lParam2) into (lp1, lp2) 32=>16 */
 420             if ((result = MMIO_Map32To16(wMsg, &lp1, &lp2)) != MMSYSERR_NOERROR)
 421                 return result;
 422         }
 423         /* FIXME: is wm->info.pIOProc a segmented or a linear address ?
 424          * sounds to me it's a segmented one, should use a thunk somewhere
 425          */
 426         segmmioInfo16 = MapLS( &mmioInfo16 );
 427         result = ((LPMMIOPROC16)wm->info.pIOProc)((LPSTR)segmmioInfo16, wMsg, lp1, lp2);
 428         UnMapLS( segmmioInfo16 );
 429         if (wm->ioProc->type != type) {
 430             MMIO_UnMap32To16(wMsg, lParam1, lParam2, lp1, lp2);
 431         }
 432         wm->info.lDiskOffset = mmioInfo16.lDiskOffset;
 433         wm->info.adwInfo[0]  = mmioInfo16.adwInfo[0];
 434         wm->info.adwInfo[1]  = mmioInfo16.adwInfo[1];
 435         wm->info.adwInfo[2]  = mmioInfo16.adwInfo[2];
 436         wm->info.adwInfo[3]  = mmioInfo16.adwInfo[3];
 437         break;
 438     case MMIO_PROC_32A:
 439     case MMIO_PROC_32W:
 440         if (wm->ioProc->type != type) {
 441             /* map (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 442             WARN("NIY\n");
 443         }
 444         result = (wm->info.pIOProc)((LPSTR)&wm->info, wMsg, lp1, lp2);
 445
 446 #if 0
 447         if (wm->ioProc->type != type) {
 448             /* unmap (lParam1, lParam2) into (lp1, lp2) 16=>32 */
 449         }
 450 #endif
 451         break;
 452     default:
 453         FIXME("Internal error\n");
 454         result = MMSYSERR_ERROR;
 455     }
 456
 457     return result;
 458 }
 459
 460 /**************************************************************************
 461  *                              MMIO_ParseExt                   [internal]
 462  *
 463  * Parses a filename for the extension.
 464  *
 465  * RETURNS
 466  *  The FOURCC code for the extension if found, else 0.
 467  */
 468 static FOURCC MMIO_ParseExt(LPCSTR szFileName)
 469 {
 470     /* Filenames are of the form file.ext+ABC
 471        FIXME: What if a '+' is part of the file name?
 472        For now, we take the last '+' present */
 473
 474     FOURCC ret = 0;
 475
 476     /* Note that ext{Start,End} point to the . and + respectively */
 477     LPSTR extEnd;
 478
 479     TRACE("(%s)\n",debugstr_a(szFileName));
 480
 481     if (!szFileName)
 482         return ret;
 483     extEnd = strrchr(szFileName,'+');
 484     if (extEnd) {
 485         /* Need to parse to find the extension */
 486         LPSTR extStart;
 487
 488         extStart = extEnd;
 489         while (extStart >= szFileName && extStart[0] != '.') {
 490             extStart--;
 491         }
 492
 493         if (extStart < szFileName) {
 494             ERR("+ but no . in szFileName: %s\n", debugstr_a(szFileName));
 495         } else {
 496             CHAR ext[5];
 497
 498             if (extEnd - extStart - 1 > 4)
 499                 WARN("Extension length > 4\n");
 500             lstrcpynA(ext,extStart + 1,min(extEnd-extStart,5));
 501             TRACE("Got extension: %s\n", debugstr_a(ext));
 502             /* FOURCC codes identifying file-extensions must be uppercase */
 503             ret = mmioStringToFOURCCA(ext, MMIO_TOUPPER);
 504         }
 505     }
 506     return ret;
 507 }
 508
 509 /**************************************************************************
 510  *                              MMIO_Get                        [internal]
 511  *
 512  * Retrieves the mmio object from current process
 513  */
 514 static  LPWINE_MMIO     MMIO_Get(LPWINE_MM_IDATA iData, HMMIO h)
 515 {
 516     LPWINE_MMIO         wm = NULL;
 517
 518     if (!iData) iData = MULTIMEDIA_GetIData();
 519
 520     EnterCriticalSection(&iData->cs);
 521     for (wm = iData->lpMMIO; wm; wm = wm->lpNext) {
 522         if (wm->info.hmmio == h)
 523             break;
 524     }
 525     LeaveCriticalSection(&iData->cs);
 526     return wm;
 527 }
 528
 529 /**************************************************************************
 530  *                              MMIO_Create                     [internal]
 531  *
 532  * Creates an internal representation for a mmio instance
 533  */
 534 static  LPWINE_MMIO             MMIO_Create(void)
 535 {
 536     static      WORD    MMIO_counter = 0;
 537     LPWINE_MMIO         wm;
 538     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 539
 540     wm = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINE_MMIO));
 541     if (wm) {
 542         EnterCriticalSection(&iData->cs);
 543         while (MMIO_Get(iData, HMMIO_32(++MMIO_counter)));
 544         wm->info.hmmio = HMMIO_32(MMIO_counter);
 545         wm->lpNext = iData->lpMMIO;
 546         iData->lpMMIO = wm;
 547         LeaveCriticalSection(&iData->cs);
 548     }
 549     return wm;
 550 }
 551
 552 /**************************************************************************
 553  *                              MMIO_Destroy                    [internal]
 554  *-
 555  * Destroys an internal representation for a mmio instance
 556  */
 557 static  BOOL            MMIO_Destroy(LPWINE_MMIO wm)
 558 {
 559     LPWINE_MM_IDATA     iData = MULTIMEDIA_GetIData();
 560     LPWINE_MMIO*        m;
 561
 562     EnterCriticalSection(&iData->cs);
 563     /* search for the matching one... */
 564     m = &(iData->lpMMIO);
 565     while (*m && *m != wm) m = &(*m)->lpNext;
 566     /* ...and destroy */
 567     if (*m) {
 568         *m = (*m)->lpNext;
 569         HeapFree(GetProcessHeap(), 0, wm);
 570         wm = NULL;
 571     }
 572     LeaveCriticalSection(&iData->cs);
 573     return wm ? FALSE : TRUE;
 574 }
 575
 576 /****************************************************************
 577  *                      MMIO_Flush                      [INTERNAL]
 578  */
 579 static  MMRESULT MMIO_Flush(WINE_MMIO* wm, UINT uFlags)
 580 {
 581     if (wm->info.cchBuffer && (wm->info.fccIOProc != FOURCC_MEM)) {
 582         /* not quite sure what to do here, but I'll guess */
 583         if (wm->info.dwFlags & MMIO_DIRTY) {
 584             /* FIXME: error handling */
 585             MMIO_SendMessage(wm, MMIOM_SEEK, wm->info.lBufOffset,
 586                              SEEK_SET, MMIO_PROC_32A);
 587             MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)wm->info.pchBuffer,
 588                              wm->info.pchNext - wm->info.pchBuffer, MMIO_PROC_32A);
 589         }
 590         if (uFlags & MMIO_EMPTYBUF)
 591             wm->info.pchNext = wm->info.pchEndRead = wm->info.pchBuffer;
 592     }
 593     wm->info.dwFlags &= ~MMIO_DIRTY;
 594
 595     return MMSYSERR_NOERROR;
 596 }
 597
 598 /***************************************************************************
 599  *                      MMIO_GrabNextBuffer                     [INTERNAL]
 600  */
 601 static LONG     MMIO_GrabNextBuffer(LPWINE_MMIO wm, int for_read)
 602 {
 603     LONG        size = wm->info.cchBuffer;
 604
 605     TRACE("bo=%lx do=%lx of=%lx\n",
 606           wm->info.lBufOffset, wm->info.lDiskOffset,
 607           MMIO_SendMessage(wm, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A));
 608
 609     wm->info.lBufOffset = wm->info.lDiskOffset;
 610     wm->info.pchNext = wm->info.pchBuffer;
 611     wm->info.pchEndRead = wm->info.pchBuffer;
 612     wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
 613
 614     if (for_read) {
 615         size = MMIO_SendMessage(wm, MMIOM_READ, (LPARAM)wm->info.pchBuffer,
 616                                 size, MMIO_PROC_32A);
 617         if (size > 0)
 618             wm->info.pchEndRead += size;
 619     }
 620
 621     wm->bBufferLoaded = TRUE;
 622     return size;
 623 }
 624
 625 /***************************************************************************
 626  *                      MMIO_SetBuffer                          [INTERNAL]
 627  */
 628 static MMRESULT MMIO_SetBuffer(WINE_MMIO* wm, void* pchBuffer, LONG cchBuffer,
 629                                UINT uFlags, BOOL bFrom32)
 630 {
 631     TRACE("(%p %p %ld %u %d)\n", wm, pchBuffer, cchBuffer, uFlags, bFrom32);
 632
 633     if (uFlags)                 return MMSYSERR_INVALPARAM;
 634     if (cchBuffer > 0xFFFF)
 635         WARN("Untested handling of huge mmio buffers (%ld >= 64k)\n", cchBuffer);
 636
 637     if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
 638         return MMIOERR_CANNOTWRITE;
 639
 640     if (wm->hMem && (wm->info.dwFlags & MMIO_ALLOCBUF)) {
 641         GlobalUnlock16(wm->hMem);
 642         GlobalFree16(wm->hMem);
 643         wm->hMem = 0;
 644         wm->info.dwFlags &= ~MMIO_ALLOCBUF;
 645     }
 646
 647     if (pchBuffer) {
 648         if (bFrom32) {
 649             wm->info.pchBuffer = pchBuffer;
 650             wm->buffer16 = 0;
 651         } else {
 652             wm->info.pchBuffer = MapSL((SEGPTR)pchBuffer);
 653             wm->buffer16 = (SEGPTR)pchBuffer;
 654         }
 655         wm->hMem = 0;
 656     } else if (cchBuffer) {
 657         if (!(wm->hMem = GlobalAlloc16(GMEM_MOVEABLE, cchBuffer)))
 658             return MMIOERR_OUTOFMEMORY;
 659         wm->info.dwFlags |= MMIO_ALLOCBUF;
 660     } else {
 661         wm->info.pchBuffer = NULL;
 662         wm->hMem = 0;
 663         wm->buffer16 = 0;
 664     }
 665
 666     if (wm->hMem) {
 667         wm->buffer16 = K32WOWGlobalLock16(wm->hMem);
 668         wm->info.pchBuffer = MapSL(wm->buffer16);
 669     }
 670
 671     wm->info.cchBuffer = cchBuffer;
 672     wm->info.pchNext = wm->info.pchBuffer;
 673     wm->info.pchEndRead = wm->info.pchBuffer;
 674     wm->info.pchEndWrite = wm->info.pchBuffer + cchBuffer;
 675     wm->info.lBufOffset = 0;
 676     wm->bBufferLoaded = FALSE;
 677
 678     return MMSYSERR_NOERROR;
 679 }
 680
 681 /**************************************************************************
 682  *                      MMIO_Open                               [internal]
 683  */
 684 static HMMIO MMIO_Open(LPSTR szFileName, MMIOINFO* refmminfo,
 685                        DWORD dwOpenFlags, enum mmioProcType type)
 686 {
 687     LPWINE_MMIO         wm;
 688
 689     TRACE("('%s', %p, %08lX, %d);\n", szFileName, refmminfo, dwOpenFlags, type);
 690
 691     if (dwOpenFlags & (MMIO_PARSE|MMIO_EXIST)) {
 692         char    buffer[MAX_PATH];
 693
 694         if (GetFullPathNameA(szFileName, sizeof(buffer), buffer, NULL) >= sizeof(buffer))
 695             return (HMMIO16)FALSE;
 696         if ((dwOpenFlags & MMIO_EXIST) && (GetFileAttributesA(buffer) == -1))
 697             return (HMMIO)FALSE;
 698         strcpy(szFileName, buffer);
 699         return (HMMIO)TRUE;
 700     }
 701
 702     if ((wm = MMIO_Create()) == NULL)
 703         return 0;
 704
 705     /* If both params are NULL, then parse the file name if available */
 706     if (refmminfo->fccIOProc == 0 && refmminfo->pIOProc == NULL) {
 707         wm->info.fccIOProc = MMIO_ParseExt(szFileName);
 708         /* Handle any unhandled/error case. Assume DOS file */
 709         if (wm->info.fccIOProc == 0)
 710             wm->info.fccIOProc = FOURCC_DOS;
 711         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 712         wm->info.pIOProc = wm->ioProc->pIOProc;
 713         wm->bTmpIOProc = FALSE;
 714     }
 715     /* if just the four character code is present, look up IO proc */
 716     else if (refmminfo->pIOProc == NULL) {
 717         wm->info.fccIOProc = refmminfo->fccIOProc;
 718         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 719         wm->info.pIOProc = wm->ioProc->pIOProc;
 720         wm->bTmpIOProc = FALSE;
 721     }
 722     /* if IO proc specified, use it and specified four character code */
 723     else {
 724         wm->info.fccIOProc = refmminfo->fccIOProc;
 725         wm->info.pIOProc = refmminfo->pIOProc;
 726         MMIO_InstallIOProc(wm->info.fccIOProc, wm->info.pIOProc,
 727                            MMIO_INSTALLPROC, type);
 728         if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
 729         assert(wm->ioProc->pIOProc == refmminfo->pIOProc);
 730         wm->info.pIOProc = wm->ioProc->pIOProc;
 731         wm->bTmpIOProc = TRUE;
 732     }
 733
 734     wm->bBufferLoaded = FALSE;
 735     wm->ioProc->count++;
 736
 737     if (dwOpenFlags & MMIO_ALLOCBUF) {
 738         if ((refmminfo->wErrorRet = MMIO_SetBuffer(wm, NULL, MMIO_DEFAULTBUFFER, 0,
 739                                                    type != MMIO_PROC_16)))
 740             goto error1;
 741     } else if (wm->info.fccIOProc == FOURCC_MEM) {
 742         refmminfo->wErrorRet = MMIO_SetBuffer(wm, refmminfo->pchBuffer,
 743                                               refmminfo->cchBuffer, 0,
 744                                               type != MMIO_PROC_16);
 745         if (refmminfo->wErrorRet != MMSYSERR_NOERROR)
 746             goto error1;
 747         wm->bBufferLoaded = TRUE;
 748     } /* else => unbuffered, wm->info.pchBuffer == NULL */
 749
 750     /* see mmioDosIOProc for that one */
 751     wm->info.adwInfo[0] = refmminfo->adwInfo[0];
 752     wm->info.dwFlags = dwOpenFlags;
 753
 754     /* call IO proc to actually open file */
 755     refmminfo->wErrorRet = MMIO_SendMessage(wm, MMIOM_OPEN, (LPARAM)szFileName,
 756                                             type == MMIO_PROC_16, MMIO_PROC_32A);
 757
 758     /* grab file size, when possible */
 759     wm->dwFileSize = GetFileSize(wm->info.adwInfo[0], NULL);
 760
 761     if (refmminfo->wErrorRet == 0)
 762         return wm->info.hmmio;
 763  error1:
 764     if (wm->ioProc) wm->ioProc->count--;
 765  error2:
 766     MMIO_Destroy(wm);
 767     return 0;
 768 }
 769
 770 /**************************************************************************
 771  *                              mmioOpenW                       [WINMM.@]
 772  */
 773 HMMIO WINAPI mmioOpenW(LPWSTR szFileName, MMIOINFO* lpmmioinfo,
 774                        DWORD dwOpenFlags)
 775 {
 776     HMMIO       ret;
 777     LPSTR       szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
 778
 779     if (lpmmioinfo) {
 780         ret = MMIO_Open(szFn, lpmmioinfo, dwOpenFlags, MMIO_PROC_32W);
 781     } else {
 782         MMIOINFO        mmioinfo;
 783
 784         mmioinfo.fccIOProc = 0;
 785         mmioinfo.pIOProc = NULL;
 786         mmioinfo.pchBuffer = NULL;
 787         mmioinfo.cchBuffer = 0;
 788
 789         ret = MMIO_Open(szFn, &mmioinfo, dwOpenFlags, MMIO_PROC_32W);
 790     }
 791
 792     HeapFree(GetProcessHeap(), 0, szFn);
 793     return ret;
 794 }
 795
 796 /**************************************************************************
 797  *                              mmioOpenA                       [WINMM.@]
 798  */
 799 HMMIO WINAPI mmioOpenA(LPSTR szFileName, MMIOINFO* lpmmioinfo,
 800                        DWORD dwOpenFlags)
 801 {
 802     HMMIO       ret;
 803
 804     if (lpmmioinfo) {
 805         ret = MMIO_Open(szFileName, lpmmioinfo, dwOpenFlags, MMIO_PROC_32A);
 806     } else {
 807         MMIOINFO        mmioinfo;
 808
 809         mmioinfo.fccIOProc = 0;
 810         mmioinfo.pIOProc = NULL;
 811         mmioinfo.pchBuffer = NULL;
 812         mmioinfo.cchBuffer = 0;
 813
 814         ret = MMIO_Open(szFileName, &mmioinfo, dwOpenFlags, MMIO_PROC_32A);
 815     }
 816     return ret;
 817 }
 818
 819 /**************************************************************************
 820  *                              mmioOpen                [MMSYSTEM.1210]
 821  */
 822 HMMIO16 WINAPI mmioOpen16(LPSTR szFileName, MMIOINFO16* lpmmioinfo16,
 823                           DWORD dwOpenFlags)
 824 {
 825     HMMIO       ret;
 826     MMIOINFO    mmio;
 827
 828     if (lpmmioinfo16) {
 829         MMIOINFO        mmioinfo;
 830
 831         memset(&mmioinfo, 0, sizeof(mmioinfo));
 832
 833         mmioinfo.dwFlags     = lpmmioinfo16->dwFlags;
 834         mmioinfo.fccIOProc   = lpmmioinfo16->fccIOProc;
 835         mmioinfo.pIOProc     = (LPMMIOPROC)lpmmioinfo16->pIOProc;
 836         mmioinfo.cchBuffer   = lpmmioinfo16->cchBuffer;
 837         mmioinfo.pchBuffer   = lpmmioinfo16->pchBuffer;
 838         mmioinfo.adwInfo[0]  = lpmmioinfo16->adwInfo[0];
 839         mmioinfo.adwInfo[1]  = lpmmioinfo16->adwInfo[1];
 840         mmioinfo.adwInfo[2]  = lpmmioinfo16->adwInfo[2];
 841         mmioinfo.adwInfo[3]  = lpmmioinfo16->adwInfo[3];
 842
 843         ret = MMIO_Open(szFileName, &mmioinfo, dwOpenFlags, MMIO_PROC_16);
 844
 845         mmioGetInfo16(HMMIO_16(mmioinfo.hmmio), lpmmioinfo16, 0);
 846         lpmmioinfo16->wErrorRet = HMMIO_16(ret);
 847     } else {
 848         mmio.fccIOProc = 0;
 849         mmio.pIOProc = NULL;
 850         mmio.pchBuffer = NULL;
 851         mmio.cchBuffer = 0;
 852         ret = MMIO_Open(szFileName, &mmio, dwOpenFlags, FALSE);
 853     }
 854     return HMMIO_16(ret);
 855 }
 856
 857
 858 /**************************************************************************
 859  *                              mmioClose               [WINMM.@]
 860  */
 861 MMRESULT WINAPI mmioClose(HMMIO hmmio, UINT uFlags)
 862 {
 863     LPWINE_MMIO wm;
 864     MMRESULT    result;
 865
 866     TRACE("(%04X, %04X);\n", hmmio, uFlags);
 867
 868     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 869         return MMSYSERR_INVALHANDLE;
 870
 871     if ((result = MMIO_Flush(wm, 0)) != MMSYSERR_NOERROR)
 872         return result;
 873
 874     result = MMIO_SendMessage(wm, MMIOM_CLOSE, uFlags, 0, MMIO_PROC_32A);
 875
 876     MMIO_SetBuffer(wm, NULL, 0, 0, TRUE);
 877
 878     wm->ioProc->count--;
 879
 880     if (wm->bTmpIOProc)
 881         MMIO_InstallIOProc(wm->info.fccIOProc, NULL,
 882                            MMIO_REMOVEPROC, wm->ioProc->type);
 883
 884     MMIO_Destroy(wm);
 885
 886     return result;
 887 }
 888
 889 /**************************************************************************
 890  *                              mmioClose               [MMSYSTEM.1211]
 891  */
 892 MMRESULT16 WINAPI mmioClose16(HMMIO16 hmmio, UINT16 uFlags)
 893 {
 894     return mmioClose(HMMIO_32(hmmio), uFlags);
 895 }
 896
 897 /**************************************************************************
 898  *                              mmioRead                [WINMM.@]
 899  */
 900 LONG WINAPI mmioRead(HMMIO hmmio, HPSTR pch, LONG cch)
 901 {
 902     LPWINE_MMIO wm;
 903     LONG        count;
 904
 905     TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
 906
 907     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 908         return -1;
 909
 910     /* unbuffered case first */
 911     if (!wm->info.pchBuffer)
 912         return MMIO_SendMessage(wm, MMIOM_READ, (LPARAM)pch, cch, MMIO_PROC_32A);
 913
 914     /* first try from current buffer */
 915     if (wm->info.pchNext != wm->info.pchEndRead) {
 916         count = wm->info.pchEndRead - wm->info.pchNext;
 917         if (count > cch || count < 0) count = cch;
 918         memcpy(pch, wm->info.pchNext, count);
 919         wm->info.pchNext += count;
 920         pch += count;
 921         cch -= count;
 922     } else
 923         count = 0;
 924
 925     if (cch && (wm->info.fccIOProc != FOURCC_MEM)) {
 926         assert(wm->info.cchBuffer);
 927
 928         while (cch) {
 929             LONG size;
 930
 931             size = MMIO_GrabNextBuffer(wm, TRUE);
 932             if (size <= 0) break;
 933             if (size > cch) size = cch;
 934             memcpy(pch, wm->info.pchBuffer, size);
 935             wm->info.pchNext += size;
 936             pch += size;
 937             cch -= size;
 938             count += size;
 939         }
 940     }
 941
 942     TRACE("count=%ld\n", count);
 943     return count;
 944 }
 945
 946 /**************************************************************************
 947  *                              mmioRead                [MMSYSTEM.1212]
 948  */
 949 LONG WINAPI mmioRead16(HMMIO16 hmmio, HPSTR pch, LONG cch)
 950 {
 951     return mmioRead(HMMIO_32(hmmio), pch, cch);
 952 }
 953
 954 /**************************************************************************
 955  *                              mmioWrite               [WINMM.@]
 956  */
 957 LONG WINAPI mmioWrite(HMMIO hmmio, HPCSTR pch, LONG cch)
 958 {
 959     LPWINE_MMIO wm;
 960     LONG        count;
 961
 962     TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
 963
 964     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
 965         return -1;
 966
 967     if (wm->info.cchBuffer) {
 968         LONG    bytesW = 0;
 969
 970         count = 0;
 971         while (cch) {
 972             if (wm->info.pchNext != wm->info.pchEndWrite) {
 973                 count = wm->info.pchEndWrite - wm->info.pchNext;
 974                 if (count > cch || count < 0) count = cch;
 975                 memcpy(wm->info.pchNext, pch, count);
 976                 wm->info.pchNext += count;
 977                 pch += count;
 978                 cch -= count;
 979                 bytesW += count;
 980                 wm->info.dwFlags |= MMIO_DIRTY;
 981             } else {
 982                 if (wm->info.fccIOProc == FOURCC_MEM) {
 983                     if (wm->info.adwInfo[0]) {
 984                         /* from where would we get the memory handle? */
 985                         FIXME("memory file expansion not implemented!\n");
 986                         break;
 987                     } else break;
 988                 }
 989             }
 990
 991             if (wm->info.pchNext == wm->info.pchEndWrite)
 992             {
 993                 MMIO_Flush(wm, MMIO_EMPTYBUF);
 994                 MMIO_GrabNextBuffer(wm, FALSE);
 995             }
 996             else break;
 997         }
 998         count = bytesW;
 999     } else {
1000         count = MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)pch, cch, MMIO_PROC_32A);
1001         wm->info.lBufOffset = wm->info.lDiskOffset;
1002     }
1003
1004     TRACE("bytes written=%ld\n", count);
1005     return count;
1006 }
1007
1008 /**************************************************************************
1009  *                              mmioWrite               [MMSYSTEM.1213]
1010  */
1011 LONG WINAPI mmioWrite16(HMMIO16 hmmio, HPCSTR pch, LONG cch)
1012 {
1013     return mmioWrite(HMMIO_32(hmmio),pch,cch);
1014 }
1015
1016 /**************************************************************************
1017  *                              mmioSeek                [WINMM.@]
1018  */
1019 LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
1020 {
1021     LPWINE_MMIO wm;
1022     LONG        offset;
1023
1024     TRACE("(%04X, %08lX, %d);\n", hmmio, lOffset, iOrigin);
1025
1026     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1027         return MMSYSERR_INVALHANDLE;
1028
1029     /* not buffered, direct seek on file */
1030     if (!wm->info.pchBuffer)
1031         return MMIO_SendMessage(wm, MMIOM_SEEK, lOffset, iOrigin, MMIO_PROC_32A);
1032
1033     switch (iOrigin) {
1034     case SEEK_SET:
1035         offset = lOffset;
1036         break;
1037     case SEEK_CUR:
1038         offset = wm->info.lBufOffset + (wm->info.pchNext - wm->info.pchBuffer) + lOffset;
1039         break;
1040     case SEEK_END:
1041         offset = ((wm->info.fccIOProc == FOURCC_MEM)? wm->info.cchBuffer : wm->dwFileSize) - lOffset;
1042         break;
1043     default:
1044         return -1;
1045     }
1046
1047     if (offset && offset >= wm->dwFileSize && wm->info.fccIOProc != FOURCC_MEM) {
1048         /* should check that write mode exists */
1049         if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
1050             return -1;
1051         wm->info.lBufOffset = offset;
1052         wm->info.pchEndRead = wm->info.pchBuffer;
1053         wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
1054         if ((wm->info.dwFlags & MMIO_RWMODE) == MMIO_READ) {
1055             wm->info.lDiskOffset = wm->dwFileSize;
1056         }
1057     } else if ((wm->info.cchBuffer > 0) &&
1058         ((offset < wm->info.lBufOffset) ||
1059          (offset >= wm->info.lBufOffset + wm->info.cchBuffer) ||
1060          !wm->bBufferLoaded)) {
1061         /* stay in same buffer ? */
1062         /* some memory mapped buffers are defined with -1 as a size */
1063
1064         /* condition to change buffer */
1065         if ((wm->info.fccIOProc == FOURCC_MEM) ||
1066             MMIO_Flush(wm, 0) != MMSYSERR_NOERROR ||
1067             /* this also sets the wm->info.lDiskOffset field */
1068             MMIO_SendMessage(wm, MMIOM_SEEK,
1069                              (offset / wm->info.cchBuffer) * wm->info.cchBuffer,
1070                              SEEK_SET, MMIO_PROC_32A) == -1)
1071             return -1;
1072         MMIO_GrabNextBuffer(wm, TRUE);
1073     }
1074
1075     wm->info.pchNext = wm->info.pchBuffer + (offset - wm->info.lBufOffset);
1076
1077     TRACE("=> %ld\n", offset);
1078     return offset;
1079 }
1080
1081 /**************************************************************************
1082  *                              mmioSeek                [MMSYSTEM.1214]
1083  */
1084 LONG WINAPI mmioSeek16(HMMIO16 hmmio, LONG lOffset, INT16 iOrigin)
1085 {
1086     return mmioSeek(HMMIO_32(hmmio), lOffset, iOrigin);
1087 }
1088
1089 /**************************************************************************
1090  *                              mmioGetInfo             [MMSYSTEM.1215]
1091  */
1092 MMRESULT16 WINAPI mmioGetInfo16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1093 {
1094     LPWINE_MMIO wm;
1095
1096     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1097
1098     if ((wm = MMIO_Get(NULL, HMMIO_32(hmmio))) == NULL)
1099         return MMSYSERR_INVALHANDLE;
1100
1101     if (!wm->buffer16)
1102         return MMSYSERR_ERROR;
1103
1104     lpmmioinfo->dwFlags     = wm->info.dwFlags;
1105     lpmmioinfo->fccIOProc   = wm->info.fccIOProc;
1106     lpmmioinfo->pIOProc     = (LPMMIOPROC16)wm->info.pIOProc;
1107     lpmmioinfo->wErrorRet   = wm->info.wErrorRet;
1108     lpmmioinfo->hTask       = wm->info.hTask;
1109     lpmmioinfo->cchBuffer   = wm->info.cchBuffer;
1110     lpmmioinfo->pchBuffer   = (void*)wm->buffer16;
1111     lpmmioinfo->pchNext     = (void*)(wm->buffer16 + (wm->info.pchNext - wm->info.pchBuffer));
1112     lpmmioinfo->pchEndRead  = (void*)(wm->buffer16 + (wm->info.pchEndRead - wm->info.pchBuffer));
1113     lpmmioinfo->pchEndWrite = (void*)(wm->buffer16 + (wm->info.pchEndWrite - wm->info.pchBuffer));
1114     lpmmioinfo->lBufOffset  = wm->info.lBufOffset;
1115     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1116     lpmmioinfo->adwInfo[0]  = wm->info.adwInfo[0];
1117     lpmmioinfo->adwInfo[1]  = wm->info.adwInfo[1];
1118     lpmmioinfo->adwInfo[2]  = wm->info.adwInfo[2];
1119     lpmmioinfo->adwInfo[3]  = wm->info.adwInfo[3];
1120     lpmmioinfo->dwReserved1 = 0;
1121     lpmmioinfo->dwReserved2 = 0;
1122     lpmmioinfo->hmmio = HMMIO_16(wm->info.hmmio);
1123
1124     return MMSYSERR_NOERROR;
1125 }
1126
1127 /**************************************************************************
1128  *                              mmioGetInfo             [WINMM.@]
1129  */
1130 MMRESULT WINAPI mmioGetInfo(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1131 {
1132     LPWINE_MMIO         wm;
1133
1134     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1135
1136     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1137         return MMSYSERR_INVALHANDLE;
1138
1139     memcpy(lpmmioinfo, &wm->info, sizeof(MMIOINFO));
1140
1141     return MMSYSERR_NOERROR;
1142 }
1143
1144 /**************************************************************************
1145  *                              mmioSetInfo             [MMSYSTEM.1216]
1146  */
1147 MMRESULT16 WINAPI mmioSetInfo16(HMMIO16 hmmio, const MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1148 {
1149     LPWINE_MMIO         wm;
1150
1151     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1152
1153     if ((wm = MMIO_Get(NULL, HMMIO_32(hmmio))) == NULL)
1154         return MMSYSERR_INVALHANDLE;
1155
1156     /* check if seg and lin buffers are the same */
1157     if (wm->info.cchBuffer != lpmmioinfo->cchBuffer ||
1158         wm->info.pchBuffer != MapSL(wm->buffer16))
1159         return MMSYSERR_INVALPARAM;
1160
1161     /* check pointers coherence */
1162     if (lpmmioinfo->pchNext < lpmmioinfo->pchBuffer ||
1163         lpmmioinfo->pchNext > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1164         lpmmioinfo->pchEndRead < lpmmioinfo->pchBuffer ||
1165         lpmmioinfo->pchEndRead > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer ||
1166         lpmmioinfo->pchEndWrite < lpmmioinfo->pchBuffer ||
1167         lpmmioinfo->pchEndWrite > lpmmioinfo->pchBuffer + lpmmioinfo->cchBuffer)
1168         return MMSYSERR_INVALPARAM;
1169
1170     wm->info.pchNext     = wm->info.pchBuffer + (lpmmioinfo->pchNext     - lpmmioinfo->pchBuffer);
1171     wm->info.pchEndRead  = wm->info.pchBuffer + (lpmmioinfo->pchEndRead  - lpmmioinfo->pchBuffer);
1172     wm->info.pchEndWrite = wm->info.pchBuffer + (lpmmioinfo->pchEndWrite - lpmmioinfo->pchBuffer);
1173
1174     return MMSYSERR_NOERROR;
1175 }
1176
1177 /**************************************************************************
1178  *                              mmioSetInfo             [WINMM.@]
1179  */
1180 MMRESULT WINAPI mmioSetInfo(HMMIO hmmio, const MMIOINFO* lpmmioinfo, UINT uFlags)
1181 {
1182     LPWINE_MMIO         wm;
1183
1184     TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
1185
1186     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1187         return MMSYSERR_INVALHANDLE;
1188
1189     /* check pointers coherence */
1190     if (lpmmioinfo->pchNext < wm->info.pchBuffer ||
1191         lpmmioinfo->pchNext > wm->info.pchBuffer + wm->info.cchBuffer ||
1192         lpmmioinfo->pchEndRead < wm->info.pchBuffer ||
1193         lpmmioinfo->pchEndRead > wm->info.pchBuffer + wm->info.cchBuffer ||
1194         lpmmioinfo->pchEndWrite < wm->info.pchBuffer ||
1195         lpmmioinfo->pchEndWrite > wm->info.pchBuffer + wm->info.cchBuffer)
1196         return MMSYSERR_INVALPARAM;
1197
1198     wm->info.pchNext = lpmmioinfo->pchNext;
1199     wm->info.pchEndRead = lpmmioinfo->pchEndRead;
1200
1201     return MMSYSERR_NOERROR;
1202 }
1203
1204 /**************************************************************************
1205 *                               mmioSetBuffer           [WINMM.@]
1206 */
1207 MMRESULT WINAPI mmioSetBuffer(HMMIO hmmio, LPSTR pchBuffer, LONG cchBuffer, UINT uFlags)
1208 {
1209     LPWINE_MMIO         wm;
1210
1211     TRACE("(hmmio=%04x, pchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1212           hmmio, pchBuffer, cchBuffer, uFlags);
1213
1214     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1215         return MMSYSERR_INVALHANDLE;
1216
1217     return MMIO_SetBuffer(wm, pchBuffer, cchBuffer, uFlags, TRUE);
1218 }
1219
1220 /**************************************************************************
1221  *                              mmioSetBuffer           [MMSYSTEM.1217]
1222  */
1223 MMRESULT16 WINAPI mmioSetBuffer16(HMMIO16 hmmio, LPSTR segpchBuffer,
1224                                   LONG cchBuffer, UINT16 uFlags)
1225 {
1226     LPWINE_MMIO         wm;
1227
1228     TRACE("(hmmio=%04x, segpchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
1229           hmmio, segpchBuffer, cchBuffer, uFlags);
1230
1231     if ((wm = MMIO_Get(NULL, HMMIO_32(hmmio))) == NULL)
1232         return MMSYSERR_INVALHANDLE;
1233
1234     return MMIO_SetBuffer(wm, segpchBuffer, cchBuffer, uFlags, FALSE);
1235 }
1236
1237 /**************************************************************************
1238  *                              mmioFlush               [WINMM.@]
1239  */
1240 MMRESULT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
1241 {
1242     LPWINE_MMIO         wm;
1243
1244     TRACE("(%04X, %04X)\n", hmmio, uFlags);
1245
1246     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1247         return MMSYSERR_INVALHANDLE;
1248
1249     return MMIO_Flush(wm, uFlags);
1250 }
1251
1252 /**************************************************************************
1253  *                              mmioFlush               [MMSYSTEM.1218]
1254  */
1255 MMRESULT16 WINAPI mmioFlush16(HMMIO16 hmmio, UINT16 uFlags)
1256 {
1257     return mmioFlush(HMMIO_32(hmmio), uFlags);
1258 }
1259
1260 /**************************************************************************
1261  *                              mmioAdvance             [WINMM.@]
1262  */
1263 MMRESULT WINAPI mmioAdvance(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1264 {
1265     LPWINE_MMIO         wm;
1266
1267     TRACE("hmmio=%04X, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
1268
1269     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1270         return MMSYSERR_INVALHANDLE;
1271
1272     if (!wm->info.cchBuffer)
1273         return MMIOERR_UNBUFFERED;
1274
1275     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1276         return MMSYSERR_INVALPARAM;
1277
1278     if (uFlags == MMIO_WRITE && (lpmmioinfo->dwFlags & MMIO_DIRTY))
1279     {
1280         MMIO_SendMessage(wm, MMIOM_SEEK, lpmmioinfo->lBufOffset, SEEK_SET, MMIO_PROC_32A);
1281         MMIO_SendMessage(wm, MMIOM_WRITE, (LPARAM)lpmmioinfo->pchBuffer,
1282                          lpmmioinfo->pchNext - lpmmioinfo->pchBuffer, MMIO_PROC_32A);
1283         lpmmioinfo->dwFlags &= ~MMIO_DIRTY;
1284     }
1285     if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
1286         return MMIOERR_CANNOTWRITE;
1287
1288     if (lpmmioinfo) {
1289         wm->dwFileSize = max(wm->dwFileSize, lpmmioinfo->lBufOffset + (lpmmioinfo->pchNext - lpmmioinfo->pchBuffer));
1290     }
1291     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1292
1293     if (lpmmioinfo) {
1294         lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1295         lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1296             (wm->info.pchEndRead - wm->info.pchBuffer);
1297         lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1298             (wm->info.pchEndWrite - wm->info.pchBuffer);
1299         lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1300         lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1301     }
1302     return MMSYSERR_NOERROR;
1303 }
1304
1305 /***********************************************************************
1306  *                              mmioAdvance             [MMSYSTEM.1219]
1307  */
1308 MMRESULT16 WINAPI mmioAdvance16(HMMIO16 hmmio, MMIOINFO16* lpmmioinfo, UINT16 uFlags)
1309 {
1310     LPWINE_MMIO         wm;
1311
1312     TRACE("hmmio=%04X, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
1313
1314     if ((wm = MMIO_Get(NULL, HMMIO_32(hmmio))) == NULL)
1315         return MMSYSERR_INVALHANDLE;
1316
1317     if (!wm->info.cchBuffer)
1318         return MMIOERR_UNBUFFERED;
1319
1320     if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1321         return MMSYSERR_INVALPARAM;
1322
1323     if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
1324         return MMIOERR_CANNOTWRITE;
1325
1326     MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1327
1328     lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1329     lpmmioinfo->pchEndRead  = lpmmioinfo->pchBuffer +
1330         (wm->info.pchEndRead - wm->info.pchBuffer);
1331     lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1332         (wm->info.pchEndWrite - wm->info.pchBuffer);
1333     lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1334     lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1335
1336     return MMSYSERR_NOERROR;
1337 }
1338
1339 /**************************************************************************
1340  *                              mmioStringToFOURCCA     [WINMM.@]
1341  */
1342 FOURCC WINAPI mmioStringToFOURCCA(LPCSTR sz, UINT uFlags)
1343 {
1344     CHAR cc[4];
1345     int i = 0;
1346
1347     for (i = 0; i < 4 && sz[i]; i++) {
1348         if (uFlags & MMIO_TOUPPER) {
1349             cc[i] = toupper(sz[i]);
1350         } else {
1351             cc[i] = sz[i];
1352         }
1353     }
1354
1355     /* Pad with spaces */
1356     while (i < 4) cc[i++] = ' ';
1357
1358     TRACE("Got '%.4s'\n",cc);
1359     return mmioFOURCC(cc[0],cc[1],cc[2],cc[3]);
1360 }
1361
1362 /**************************************************************************
1363  *                              mmioStringToFOURCCW     [WINMM.@]
1364  */
1365 FOURCC WINAPI mmioStringToFOURCCW(LPCWSTR sz, UINT uFlags)
1366 {
1367     LPSTR       szA = HEAP_strdupWtoA(GetProcessHeap(),0,sz);
1368     FOURCC      ret = mmioStringToFOURCCA(szA,uFlags);
1369
1370     HeapFree(GetProcessHeap(), 0, szA);
1371     return ret;
1372 }
1373
1374 /**************************************************************************
1375  *                              mmioStringToFOURCC      [MMSYSTEM.1220]
1376  */
1377 FOURCC WINAPI mmioStringToFOURCC16(LPCSTR sz, UINT16 uFlags)
1378 {
1379     return mmioStringToFOURCCA(sz, uFlags);
1380 }
1381
1382 /**************************************************************************
1383  *              mmioInstallIOProc    [MMSYSTEM.1221]
1384  */
1385 LPMMIOPROC16 WINAPI mmioInstallIOProc16(FOURCC fccIOProc, LPMMIOPROC16 pIOProc,
1386                                         DWORD dwFlags)
1387 {
1388     return (LPMMIOPROC16)MMIO_InstallIOProc(fccIOProc, (LPMMIOPROC)pIOProc,
1389                                             dwFlags, MMIO_PROC_16);
1390 }
1391
1392 /**************************************************************************
1393  *                              mmioInstallIOProcA         [WINMM.@]
1394  */
1395 LPMMIOPROC WINAPI mmioInstallIOProcA(FOURCC fccIOProc,
1396                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1397 {
1398     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32A);
1399 }
1400
1401 /**************************************************************************
1402  *                              mmioInstallIOProcW         [WINMM.@]
1403  */
1404 LPMMIOPROC WINAPI mmioInstallIOProcW(FOURCC fccIOProc,
1405                                      LPMMIOPROC pIOProc, DWORD dwFlags)
1406 {
1407     return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32W);
1408 }
1409
1410 /**************************************************************************
1411  *                              mmioSendMessage [MMSYSTEM.1222]
1412  */
1413 LRESULT WINAPI mmioSendMessage16(HMMIO16 hmmio, UINT16 uMessage,
1414                                  LPARAM lParam1, LPARAM lParam2)
1415 {
1416     LPWINE_MMIO         wm;
1417
1418     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1419
1420     if (uMessage < MMIOM_USER)
1421         return MMSYSERR_INVALPARAM;
1422
1423     if ((wm = MMIO_Get(NULL, HMMIO_32(hmmio))) == NULL)
1424         return MMSYSERR_INVALHANDLE;
1425
1426     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_16);
1427 }
1428
1429 /**************************************************************************
1430  *                              mmioSendMessage         [WINMM.@]
1431  */
1432 LRESULT WINAPI mmioSendMessage(HMMIO hmmio, UINT uMessage,
1433                                LPARAM lParam1, LPARAM lParam2)
1434 {
1435     LPWINE_MMIO         wm;
1436
1437     TRACE("(%04X, %u, %ld, %ld)\n", hmmio, uMessage, lParam1, lParam2);
1438
1439     if (uMessage < MMIOM_USER)
1440         return MMSYSERR_INVALPARAM;
1441
1442     if ((wm = MMIO_Get(NULL, hmmio)) == NULL)
1443         return MMSYSERR_INVALHANDLE;
1444
1445     return MMIO_SendMessage(wm, uMessage, lParam1, lParam2, MMIO_PROC_32A);
1446 }
1447
1448 /**************************************************************************
1449  *                              mmioDescend             [WINMM.@]
1450  */
1451 MMRESULT WINAPI mmioDescend(HMMIO hmmio, LPMMCKINFO lpck,
1452                             const MMCKINFO* lpckParent, UINT uFlags)
1453 {
1454     DWORD               dwOldPos;
1455     FOURCC              srchCkId;
1456     FOURCC              srchType;
1457
1458
1459     TRACE("(%04X, %p, %p, %04X);\n", hmmio, lpck, lpckParent, uFlags);
1460
1461     if (lpck == NULL)
1462         return MMSYSERR_INVALPARAM;
1463
1464     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1465     TRACE("dwOldPos=%ld\n", dwOldPos);
1466
1467     if (lpckParent != NULL) {
1468         TRACE("seek inside parent at %ld !\n", lpckParent->dwDataOffset);
1469         /* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
1470         if (dwOldPos < lpckParent->dwDataOffset ||
1471             dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
1472             WARN("outside parent chunk\n");
1473             return MMIOERR_CHUNKNOTFOUND;
1474         }
1475     }
1476
1477     /* The SDK docu says 'ckid' is used for all cases. Real World
1478      * examples disagree -Marcus,990216.
1479      */
1480
1481     srchType = 0;
1482     /* find_chunk looks for 'ckid' */
1483     if (uFlags & MMIO_FINDCHUNK)
1484         srchCkId = lpck->ckid;
1485     /* find_riff and find_list look for 'fccType' */
1486     if (uFlags & MMIO_FINDLIST) {
1487         srchCkId = FOURCC_LIST;
1488         srchType = lpck->fccType;
1489     }
1490     if (uFlags & MMIO_FINDRIFF) {
1491         srchCkId = FOURCC_RIFF;
1492         srchType = lpck->fccType;
1493     }
1494
1495     if (uFlags & (MMIO_FINDCHUNK|MMIO_FINDLIST|MMIO_FINDRIFF)) {
1496         TRACE("searching for %.4s.%.4s\n",
1497               (LPSTR)&srchCkId,
1498               srchType?(LPSTR)&srchType:"any ");
1499
1500         while (TRUE) {
1501             LONG ix;
1502
1503             ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
1504             if (ix < 2*sizeof(DWORD)) {
1505                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1506                 WARN("return ChunkNotFound\n");
1507                 return MMIOERR_CHUNKNOTFOUND;
1508             }
1509             lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1510             if (ix < lpck->dwDataOffset - dwOldPos) {
1511                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1512                 WARN("return ChunkNotFound\n");
1513                 return MMIOERR_CHUNKNOTFOUND;
1514             }
1515             TRACE("ckid=%.4s fcc=%.4s cksize=%08lX !\n",
1516                   (LPSTR)&lpck->ckid,
1517                   srchType?(LPSTR)&lpck->fccType:"<na>",
1518                   lpck->cksize);
1519             if ((srchCkId == lpck->ckid) &&
1520                 (!srchType || (srchType == lpck->fccType))
1521                 )
1522                 break;
1523
1524             dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
1525             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1526         }
1527     } else {
1528         /* FIXME: unverified, does it do this? */
1529         /* NB: This part is used by WAVE_mciOpen, among others */
1530         if (mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD)) < 3 * sizeof(DWORD)) {
1531             mmioSeek(hmmio, dwOldPos, SEEK_SET);
1532             WARN("return ChunkNotFound 2nd\n");
1533             return MMIOERR_CHUNKNOTFOUND;
1534         }
1535         lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1536     }
1537     lpck->dwFlags = 0;
1538     /* If we were looking for RIFF/LIST chunks, the final file position
1539      * is after the chunkid. If we were just looking for the chunk
1540      * it is after the cksize. So add 4 in RIFF/LIST case.
1541      */
1542     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1543         mmioSeek(hmmio, lpck->dwDataOffset + sizeof(DWORD), SEEK_SET);
1544     else
1545         mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
1546     TRACE("lpck: ckid=%.4s, cksize=%ld, dwDataOffset=%ld fccType=%08lX (%.4s)!\n",
1547           (LPSTR)&lpck->ckid, lpck->cksize, lpck->dwDataOffset,
1548           lpck->fccType, srchType?(LPSTR)&lpck->fccType:"");
1549     return MMSYSERR_NOERROR;
1550 }
1551
1552 /**************************************************************************
1553  *                              mmioDescend             [MMSYSTEM.1223]
1554  */
1555 MMRESULT16 WINAPI mmioDescend16(HMMIO16 hmmio, LPMMCKINFO lpck,
1556                                 const MMCKINFO* lpckParent, UINT16 uFlags)
1557 {
1558     return mmioDescend(HMMIO_32(hmmio), lpck, lpckParent, uFlags);
1559 }
1560
1561 /**************************************************************************
1562  *                              mmioAscend              [WINMM.@]
1563  */
1564 MMRESULT WINAPI mmioAscend(HMMIO hmmio, LPMMCKINFO lpck, UINT uFlags)
1565 {
1566     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1567
1568     if (lpck->dwFlags & MMIO_DIRTY) {
1569         DWORD   dwOldPos, dwNewSize;
1570
1571         TRACE("Chunk is dirty, checking if chunk's size is correct\n");
1572         dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1573         TRACE("dwOldPos=%ld lpck->dwDataOffset = %ld\n", dwOldPos, lpck->dwDataOffset);
1574         dwNewSize = dwOldPos - lpck->dwDataOffset;
1575         if (dwNewSize != lpck->cksize) {
1576             TRACE("Nope: lpck->cksize=%ld dwNewSize=%ld\n", lpck->cksize, dwNewSize);
1577             lpck->cksize = dwNewSize;
1578
1579             /* pad odd size with 0 */
1580             if (dwNewSize & 1) {
1581                 char ch = 0;
1582                 mmioWrite(hmmio, &ch, 1);
1583             }
1584             mmioSeek(hmmio, lpck->dwDataOffset - sizeof(DWORD), SEEK_SET);
1585             mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
1586         }
1587         lpck->dwFlags = 0;
1588     }
1589
1590     mmioSeek(hmmio, lpck->dwDataOffset + ((lpck->cksize + 1) & ~1), SEEK_SET);
1591
1592     return MMSYSERR_NOERROR;
1593 }
1594
1595 /**************************************************************************
1596  *                              mmioAscend              [MMSYSTEM.1224]
1597  */
1598 MMRESULT16 WINAPI mmioAscend16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1599 {
1600     return mmioAscend(HMMIO_32(hmmio),lpck,uFlags);
1601 }
1602
1603 /**************************************************************************
1604  *                      mmioCreateChunk                         [WINMM.@]
1605  */
1606 MMRESULT WINAPI mmioCreateChunk(HMMIO hmmio, MMCKINFO* lpck, UINT uFlags)
1607 {
1608     DWORD       dwOldPos;
1609     LONG        size;
1610     LONG        ix;
1611
1612     TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1613
1614     dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1615     TRACE("dwOldPos=%ld\n", dwOldPos);
1616
1617     if (uFlags == MMIO_CREATELIST)
1618         lpck->ckid = FOURCC_LIST;
1619     else if (uFlags == MMIO_CREATERIFF)
1620         lpck->ckid = FOURCC_RIFF;
1621
1622     TRACE("ckid=%.4s\n", (LPSTR)&lpck->ckid);
1623
1624     size = 2 * sizeof(DWORD);
1625     lpck->dwDataOffset = dwOldPos + size;
1626
1627     if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1628         size += sizeof(DWORD);
1629     lpck->dwFlags = MMIO_DIRTY;
1630
1631     ix = mmioWrite(hmmio, (LPSTR)lpck, size);
1632     TRACE("after mmioWrite ix = %ld req = %ld, errno = %d\n",ix, size, errno);
1633     if (ix < size) {
1634         mmioSeek(hmmio, dwOldPos, SEEK_SET);
1635         WARN("return CannotWrite\n");
1636         return MMIOERR_CANNOTWRITE;
1637     }
1638
1639     return MMSYSERR_NOERROR;
1640 }
1641
1642 /**************************************************************************
1643  *                              mmioCreateChunk         [MMSYSTEM.1225]
1644  */
1645 MMRESULT16 WINAPI mmioCreateChunk16(HMMIO16 hmmio, MMCKINFO* lpck, UINT16 uFlags)
1646 {
1647     return mmioCreateChunk(HMMIO_32(hmmio), lpck, uFlags);
1648 }
1649
1650 /**************************************************************************
1651  *                              mmioRename              [MMSYSTEM.1226]
1652  */
1653 MMRESULT16 WINAPI mmioRename16(LPCSTR szFileName, LPCSTR szNewFileName,
1654                                MMIOINFO16* lpmmioinfo, DWORD dwRenameFlags)
1655 {
1656     UINT16              result = MMSYSERR_ERROR;
1657     LPMMIOPROC16        ioProc;
1658
1659     TRACE("('%s', '%s', %p, %08lX);\n",
1660           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1661
1662     /* If both params are NULL, then parse the file name */
1663     if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1664         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1665
1666     /* Handle any unhandled/error case from above. Assume DOS file */
1667     if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL))
1668         ioProc = (LPMMIOPROC16)mmioDosIOProc;
1669     /* if just the four character code is present, look up IO proc */
1670     else if (lpmmioinfo->pIOProc == NULL)
1671         ioProc = mmioInstallIOProc16(lpmmioinfo->fccIOProc, NULL, MMIO_FINDPROC);
1672     else
1673         ioProc = lpmmioinfo->pIOProc;
1674
1675     /* FIXME: ioProc is likely a segmented address, thus needing a
1676      * thunk somewhere. The main issue is that Wine's current thunking
1677      * 32 to 16 only supports pascal calling convention
1678      */
1679     if (ioProc)
1680         result = (ioProc)(0, MMIOM_RENAME,
1681                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1682
1683     return result;
1684 }
1685
1686 /**************************************************************************
1687  *                              mmioRenameA                     [WINMM.@]
1688  */
1689 MMRESULT WINAPI mmioRenameA(LPCSTR szFileName, LPCSTR szNewFileName,
1690                             MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1691 {
1692     UINT        result = MMSYSERR_ERROR;
1693     LPMMIOPROC  ioProc;
1694
1695     TRACE("('%s', '%s', %p, %08lX);\n",
1696           szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1697
1698     /* If both params are NULL, then parse the file name */
1699     if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1700         lpmmioinfo->fccIOProc = MMIO_ParseExt(szFileName);
1701
1702     /* Handle any unhandled/error case from above. Assume DOS file */
1703     if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL))
1704         ioProc = (LPMMIOPROC)mmioDosIOProc;
1705     /* if just the four character code is present, look up IO proc */
1706     else if (lpmmioinfo->pIOProc == NULL)
1707         ioProc = MMIO_InstallIOProc(lpmmioinfo->fccIOProc, NULL,
1708                                     MMIO_FINDPROC, MMIO_PROC_32A);
1709     else /* use relevant ioProc */
1710         ioProc = lpmmioinfo->pIOProc;
1711
1712     if (ioProc)
1713         result = (ioProc)(0, MMIOM_RENAME,
1714                           (LPARAM)szFileName, (LPARAM)szNewFileName);
1715
1716     return result;
1717 }
1718
1719 /**************************************************************************
1720  *                              mmioRenameW                     [WINMM.@]
1721  */
1722 MMRESULT WINAPI mmioRenameW(LPCWSTR szFileName, LPCWSTR szNewFileName,
1723                             MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1724 {
1725     LPSTR       szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
1726     LPSTR       sznFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szNewFileName);
1727     UINT        ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwRenameFlags);
1728
1729     HeapFree(GetProcessHeap(),0,szFn);
1730     HeapFree(GetProcessHeap(),0,sznFn);
1731     return ret;
1732 }