multimedia/mmio.c

   1 /*
   2  * MMIO functions
   3  *
   4  * Copyright 1998 Andrew Taylor
   5  * Copyright 1998 Ove Kåven
   6  *
   7  */
   8
   9
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <errno.h>
  13 #include "windef.h"
  14 #include "wine/winbase16.h"
  15 #include "heap.h"
  16 #include "file.h"
  17 #include "mmsystem.h"
  18 #include "debugtools.h"
  19 #include "xmalloc.h"
  20
  21 DEFAULT_DEBUG_CHANNEL(mmio)
  22
  23 /**************************************************************************
  24  *               mmioDosIOProc           [internal]
  25  */
  26 static LRESULT mmioDosIOProc(LPMMIOINFO16 lpmmioinfo, UINT16 uMessage, LPARAM lParam1, LPARAM lParam2) {
  27         TRACE("(%p, %X, %ld, %ld);\n", lpmmioinfo, uMessage, lParam1, lParam2);
  28
  29         switch (uMessage) {
  30
  31                 case MMIOM_OPEN: {
  32                         /* Parameters:
  33                          * lParam1 = szFileName parameter from mmioOpen
  34                          * lParam2 = reserved (we use it for 16-bitness)
  35                          * Returns: zero on success, error code on error
  36                          * NOTE: lDiskOffset automatically set to zero
  37                          */
  38
  39                         OFSTRUCT ofs;
  40                         LPSTR szFileName = (LPSTR) lParam1;
  41
  42                         if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
  43                                 FIXME("MMIO_GETTEMP not implemented\n");
  44                                 return MMIOERR_CANNOTOPEN;
  45                         }
  46
  47                         /* if filename NULL, assume open file handle in adwInfo[0] */
  48                         if (!szFileName) {
  49                                 if (lParam2) lpmmioinfo->adwInfo[0] =
  50                                         FILE_GetHandle(lpmmioinfo->adwInfo[0]);
  51                                 return 0;
  52                         }
  53
  54                         lpmmioinfo->adwInfo[0] =
  55                                 (DWORD) OpenFile(szFileName, &ofs, lpmmioinfo->dwFlags);
  56                         if (lpmmioinfo->adwInfo[0] == -1)
  57                                 return MMIOERR_CANNOTOPEN;
  58
  59                         return 0;
  60                 }
  61
  62                 case MMIOM_CLOSE: {
  63                         /* Parameters:
  64                          * lParam1 = wFlags parameter from mmioClose
  65                          * lParam2 = unused
  66                          * Returns: zero on success, error code on error
  67                          */
  68
  69                         UINT16 uFlags = (UINT16) lParam1;
  70
  71                         if (uFlags & MMIO_FHOPEN)
  72                                 return 0;
  73
  74                         _lclose((HFILE)lpmmioinfo->adwInfo[0]);
  75                         return 0;
  76
  77                 }
  78
  79                 case MMIOM_READ: {
  80                         /* Parameters:
  81                          * lParam1 = huge pointer to read buffer
  82                          * lParam2 = number of bytes to read
  83                          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
  84                          *         in wErrorRet)
  85                          * NOTE: lDiskOffset should be updated
  86                          */
  87
  88                         HPSTR pch = (HPSTR) lParam1;
  89                         LONG cch = (LONG) lParam2;
  90                         LONG count;
  91
  92                         count = _lread((HFILE)lpmmioinfo->adwInfo[0], pch, cch);
  93                         if (count != -1)
  94                                 lpmmioinfo->lDiskOffset += count;
  95
  96                         return count;
  97                 }
  98
  99                 case MMIOM_WRITE:
 100                 case MMIOM_WRITEFLUSH: {
 101                         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 102
 103                         /* Parameters:
 104                          * lParam1 = huge pointer to write buffer
 105                          * lParam2 = number of bytes to write
 106                          * Returns: number of bytes written, -1 for error (error code in
 107                          *              wErrorRet)
 108                          * NOTE: lDiskOffset should be updated
 109                          */
 110
 111                         HPSTR pch = (HPSTR) lParam1;
 112                         LONG cch = (LONG) lParam2;
 113                         LONG count;
 114
 115                         count = _hwrite((HFILE)lpmmioinfo->adwInfo[0], pch, cch);
 116                         if (count != -1)
 117                                 lpmmioinfo->lDiskOffset += count;
 118
 119                         return count;
 120                 }
 121
 122                 case MMIOM_SEEK: {
 123             /* Parameters:
 124              * lParam1 = new position
 125              * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 126              * Returns: new file postion, -1 on error
 127              * NOTE: lDiskOffset should be updated
 128              */
 129
 130             LONG Offset = (LONG) lParam1;
 131             LONG Whence = (LONG) lParam2;
 132             LONG pos;
 133
 134             pos = _llseek((HFILE)lpmmioinfo->adwInfo[0], Offset, Whence);
 135             if (pos != -1)
 136                 lpmmioinfo->lDiskOffset = pos;
 137
 138             return pos;
 139                 }
 140
 141                 case MMIOM_RENAME: {
 142             /* Parameters:
 143              * lParam1 = old name
 144              * lParam2 = new name
 145              * Returns: zero on success, non-zero on failure
 146              */
 147
 148             FIXME("MMIOM_RENAME unimplemented\n");
 149             return MMIOERR_FILENOTFOUND;
 150                 }
 151
 152                 default:
 153                         FIXME("unexpected message %u\n", uMessage);
 154                         return 0;
 155         }
 156
 157         return 0;
 158 }
 159
 160 /**************************************************************************
 161 *               mmioMemIOProc           [internal]
 162 */
 163 static LRESULT mmioMemIOProc(LPMMIOINFO16 lpmmioinfo, UINT16 uMessage, LPARAM lParam1, LPARAM lParam2) {
 164         TRACE("(%p,0x%04x,0x%08lx,0x%08lx)\n",lpmmioinfo,uMessage,lParam1,lParam2);
 165         switch (uMessage) {
 166
 167                 case MMIOM_OPEN: {
 168                         /* Parameters:
 169                          * lParam1 = filename (must be NULL)
 170                          * lParam2 = reserved (we use it for 16-bitness)
 171                          * Returns: zero on success, error code on error
 172                          * NOTE: lDiskOffset automatically set to zero
 173                          */
 174
 175                         if (!(lpmmioinfo->dwFlags & MMIO_CREATE))
 176                                 lpmmioinfo->pchEndRead = lpmmioinfo->pchEndWrite;
 177
 178                         return 0;
 179                 }
 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
 188                         return 0;
 189
 190                 }
 191
 192                 case MMIOM_READ: {
 193                         /* Parameters:
 194                          * lParam1 = huge pointer to read buffer
 195                          * lParam2 = number of bytes to read
 196                          * Returns: number of bytes read, 0 for EOF, -1 for error (error code
 197                          *         in wErrorRet)
 198                          * NOTE: lDiskOffset should be updated
 199                          */
 200
 201                         /* HPSTR pch = (HPSTR) lParam1; */
 202                         /* LONG cch = (LONG) lParam2; */
 203
 204                         FIXME("MMIOM_READ on memory files should not occur, buffer may be lost!\n");
 205                         return 0;
 206                 }
 207
 208                 case MMIOM_WRITE:
 209                 case MMIOM_WRITEFLUSH: {
 210                         /* no internal buffering, so WRITEFLUSH handled same as WRITE */
 211
 212                         /* Parameters:
 213                          * lParam1 = huge pointer to write buffer
 214                          * lParam2 = number of bytes to write
 215                          * Returns: number of bytes written, -1 for error (error code in
 216                          *              wErrorRet)
 217                          * NOTE: lDiskOffset should be updated
 218                          */
 219
 220                         /* HPSTR pch = (HPSTR) lParam1; */
 221                         /* LONG cch = (LONG) lParam2; */
 222
 223                         FIXME("MMIOM_WRITE on memory files should not occur, buffer may be lost!\n");
 224                         return 0;
 225                 }
 226
 227                 case MMIOM_SEEK: {
 228                         /* Parameters:
 229                          * lParam1 = new position
 230                          * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
 231                          * Returns: new file postion, -1 on error
 232                          * NOTE: lDiskOffset should be updated
 233                          */
 234
 235                         /* LONG Offset = (LONG) lParam1; */
 236                         /* LONG Whence = (LONG) lParam2; */
 237
 238                         FIXME("MMIOM_SEEK on memory files should not occur, buffer may be lost!\n");
 239                         return -1;
 240                 }
 241
 242                 default:
 243                         FIXME("unexpected message %u\n", uMessage);
 244                         return 0;
 245         }
 246
 247         return 0;
 248 }
 249
 250 /**************************************************************************
 251  *              MMIO_Open               [internal]
 252  */
 253 static HMMIO16 MMIO_Open(LPSTR szFileName, MMIOINFO16 * lpmmioinfo,
 254                         DWORD dwOpenFlags, int use16)
 255 {
 256         LPMMIOINFO16 lpmminfo;
 257         HMMIO16 hmmio;
 258         UINT16 result;
 259
 260         TRACE("('%s', %p, %08lX);\n", szFileName, lpmmioinfo, dwOpenFlags);
 261
 262         if (dwOpenFlags & MMIO_PARSE) {
 263                 char    buffer[MAX_PATH];
 264
 265                 if (GetFullPathNameA(szFileName, sizeof(buffer), buffer, NULL) >= sizeof(buffer))
 266                         return (HMMIO16)FALSE;
 267                 strcpy(szFileName, buffer);
 268                 return (HMMIO16)TRUE;
 269         }
 270
 271         hmmio = GlobalAlloc16(GHND, sizeof(MMIOINFO16));
 272         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 273         if (lpmminfo == NULL)
 274                 return 0;
 275         memset(lpmminfo, 0, sizeof(MMIOINFO16));
 276
 277         /* assume DOS file if not otherwise specified */
 278         if (!lpmmioinfo ||
 279                 (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)) {
 280
 281                 lpmminfo->fccIOProc = FOURCC_DOS;
 282                 lpmminfo->pIOProc = (LPMMIOPROC16) mmioDosIOProc;
 283         }
 284         /* if just the four character code is present, look up IO proc */
 285         else if (lpmmioinfo->pIOProc == NULL) {
 286
 287                 lpmminfo->fccIOProc = lpmmioinfo->fccIOProc;
 288                 lpmminfo->pIOProc = mmioInstallIOProc16(lpmmioinfo->fccIOProc, NULL, MMIO_FINDPROC);
 289
 290         }
 291         /* if IO proc specified, use it and specified four character code */
 292         else {
 293
 294                 lpmminfo->fccIOProc = lpmmioinfo->fccIOProc;
 295                 lpmminfo->pIOProc = lpmmioinfo->pIOProc;
 296         }
 297
 298         if (dwOpenFlags & MMIO_ALLOCBUF) {
 299                 if ((result = mmioSetBuffer16(hmmio, NULL, MMIO_DEFAULTBUFFER, 0))) {
 300                         if (lpmmioinfo)
 301                                 lpmmioinfo->wErrorRet = result;
 302                         return 0;
 303                 }
 304         } else
 305         if (lpmminfo->fccIOProc == FOURCC_MEM) {
 306                 if ((result = mmioSetBuffer16(hmmio, lpmmioinfo->pchBuffer, lpmmioinfo->cchBuffer, 0))) {
 307                         if (lpmmioinfo)
 308                                 lpmmioinfo->wErrorRet = result;
 309                         return 0;
 310                 }
 311         }
 312
 313         lpmminfo->dwFlags = dwOpenFlags;
 314         lpmminfo->hmmio = hmmio;
 315
 316         /* call IO proc to actually open file */
 317         result = (UINT16) mmioSendMessage(hmmio, MMIOM_OPEN, (LPARAM) szFileName, (LPARAM) use16);
 318
 319         GlobalUnlock16(hmmio);
 320
 321         if (result != 0) {
 322                 GlobalFree16(hmmio);
 323                 return 0;
 324         }
 325
 326         return hmmio;
 327 }
 328
 329 /**************************************************************************
 330  *                              mmioOpenW                       [WINMM.123]
 331  */
 332 HMMIO WINAPI mmioOpenW(LPWSTR szFileName, MMIOINFO * lpmmioinfo,
 333                           DWORD dwOpenFlags)
 334 {
 335         LPSTR   szFn = HEAP_strdupWtoA(GetProcessHeap(),0,szFileName);
 336         HMMIO ret = MMIO_Open(szFn,(LPMMIOINFO16)lpmmioinfo,dwOpenFlags,FALSE);
 337
 338         HeapFree(GetProcessHeap(),0,szFn);
 339         return ret;
 340 }
 341
 342 /**************************************************************************
 343  *                              mmioOpenA                       [WINMM.122]
 344  */
 345 HMMIO WINAPI mmioOpenA(LPSTR szFileName, MMIOINFO * lpmmioinfo,
 346                           DWORD dwOpenFlags)
 347 {
 348         return MMIO_Open(szFileName,(LPMMIOINFO16)lpmmioinfo,dwOpenFlags,FALSE);
 349 }
 350
 351 /**************************************************************************
 352  *                              mmioOpen                [MMSYSTEM.1210]
 353  */
 354 HMMIO16 WINAPI mmioOpen16(LPSTR szFileName, MMIOINFO16 * lpmmioinfo,
 355                           DWORD dwOpenFlags)
 356 {
 357         return MMIO_Open(szFileName,(LPMMIOINFO16)lpmmioinfo,dwOpenFlags,TRUE);
 358 }
 359
 360
 361 /**************************************************************************
 362  *                              mmioClose               [WINMM.114]
 363  */
 364 MMRESULT WINAPI mmioClose(HMMIO hmmio, UINT uFlags)
 365 {
 366         LPMMIOINFO16 lpmminfo;
 367         MMRESULT result;
 368
 369         TRACE("(%04X, %04X);\n", hmmio, uFlags);
 370
 371         lpmminfo = (LPMMIOINFO16) GlobalLock16(hmmio);
 372         if (lpmminfo == NULL)
 373                 return 0;
 374
 375         /* flush the file - if error reported, ignore */
 376         if (mmioFlush(hmmio, MMIO_EMPTYBUF) != 0)
 377                 lpmminfo->dwFlags &= ~MMIO_DIRTY;
 378
 379         result = mmioSendMessage(hmmio,MMIOM_CLOSE,(LPARAM)uFlags,(LPARAM)0);
 380
 381         mmioSetBuffer16(hmmio, NULL, 0, 0);
 382
 383         GlobalUnlock16(hmmio);
 384         GlobalFree16(hmmio);
 385
 386         return result;
 387 }
 388
 389
 390 /**************************************************************************
 391  *                              mmioClose               [MMSYSTEM.1211]
 392  */
 393 MMRESULT16 WINAPI mmioClose16(HMMIO16 hmmio, UINT16 uFlags)
 394 {
 395         return mmioClose(hmmio,uFlags);
 396 }
 397
 398
 399
 400 /**************************************************************************
 401  *                              mmioRead                [WINMM.124]
 402  */
 403 LONG WINAPI mmioRead(HMMIO hmmio, HPSTR pch, LONG cch)
 404 {
 405         LONG count;
 406         LPMMIOINFO16 lpmminfo;
 407
 408         TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
 409
 410         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 411         if (lpmminfo == NULL)
 412                 return -1;
 413
 414         if (lpmminfo->pchNext != lpmminfo->pchEndRead) {
 415                 count = lpmminfo->pchEndRead - lpmminfo->pchNext;
 416                 if (count > cch || count < 0) count = cch;
 417                 memcpy(pch, lpmminfo->pchNext, count);
 418                 lpmminfo->pchNext += count;
 419                 pch += count;
 420                 cch -= count;
 421         } else
 422                 count = 0;
 423
 424         if (cch&&(lpmminfo->fccIOProc!=FOURCC_MEM)) {
 425                 if (lpmminfo->cchBuffer) {
 426                         mmioFlush(hmmio, MMIO_EMPTYBUF);
 427
 428                         while (cch) {
 429                                 LONG size;
 430                                 lpmminfo->lBufOffset = lpmminfo->lDiskOffset;
 431                                 lpmminfo->pchNext = lpmminfo->pchBuffer;
 432                                 lpmminfo->pchEndRead = lpmminfo->pchBuffer;
 433                                 size = mmioSendMessage(hmmio, MMIOM_READ,
 434                                                 (LPARAM) lpmminfo->pchBuffer,
 435                                                 (LPARAM) lpmminfo->cchBuffer);
 436                                 if (size<=0) break;
 437                                 lpmminfo->pchEndRead = lpmminfo->pchBuffer + size;
 438                                 if (size > cch) size = cch;
 439                                 memcpy(pch, lpmminfo->pchNext, size);
 440                                 lpmminfo->pchNext += size;
 441                                 pch += size;
 442                                 cch -= size;
 443                                 count += size;
 444                         }
 445                 } else {
 446                         count += mmioSendMessage(hmmio, MMIOM_READ, (LPARAM) pch, (LPARAM) cch);
 447                         if (count>0) lpmminfo->lBufOffset += count;
 448                 }
 449         }
 450
 451         GlobalUnlock16(hmmio);
 452         TRACE("count=%ld\n", count);
 453         return count;
 454 }
 455
 456 /**************************************************************************
 457  *                              mmioRead                [MMSYSTEM.1212]
 458  */
 459 LONG WINAPI mmioRead16(HMMIO16 hmmio, HPSTR pch, LONG cch)
 460 {
 461         return mmioRead(hmmio,pch,cch);
 462 }
 463
 464 /**************************************************************************
 465  *                              mmioWrite               [WINMM.133]
 466  */
 467 LONG WINAPI mmioWrite(HMMIO hmmio, HPCSTR pch, LONG cch)
 468 {
 469         LONG count;
 470         LPMMIOINFO16 lpmminfo;
 471
 472         TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
 473
 474         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 475         if (lpmminfo == NULL)
 476                 return -1;
 477
 478         if (lpmminfo->cchBuffer) {
 479                 count = 0;
 480                 while (cch) {
 481                         if (lpmminfo->pchNext != lpmminfo->pchEndWrite) {
 482                                 count = lpmminfo->pchEndWrite - lpmminfo->pchNext;
 483                                 if (count > cch || count < 0) count = cch;
 484                                 memcpy(lpmminfo->pchNext, pch, count);
 485                                 lpmminfo->pchNext += count;
 486                                 pch += count;
 487                                 cch -= count;
 488                                 lpmminfo->dwFlags |= MMIO_DIRTY;
 489                         } else
 490                         if (lpmminfo->fccIOProc==FOURCC_MEM) {
 491                                 if (lpmminfo->adwInfo[0]) {
 492                                         /* from where would we get the memory handle? */
 493                                         FIXME("memory file expansion not implemented!\n");
 494                                 } else break;
 495                         }
 496
 497                         if (lpmminfo->pchNext == lpmminfo->pchEndWrite
 498                                 && mmioFlush(hmmio, MMIO_EMPTYBUF)) break;
 499                 }
 500         } else {
 501                 count = mmioSendMessage(hmmio, MMIOM_WRITE, (LPARAM) pch, (LPARAM) cch);
 502                 lpmminfo->lBufOffset = lpmminfo->lDiskOffset;
 503         }
 504
 505         GlobalUnlock16(hmmio);
 506         TRACE("count=%ld\n", count);
 507         return count;
 508 }
 509
 510 /**************************************************************************
 511  *                              mmioWrite               [MMSYSTEM.1213]
 512  */
 513 LONG WINAPI mmioWrite16(HMMIO16 hmmio, HPCSTR pch, LONG cch)
 514 {
 515         return mmioWrite(hmmio,pch,cch);
 516 }
 517
 518 /**************************************************************************
 519  *                              mmioSeek                [MMSYSTEM.1214]
 520  */
 521 LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
 522 {
 523         int offset;
 524         LPMMIOINFO16 lpmminfo;
 525
 526         TRACE("(%04X, %08lX, %d);\n", hmmio, lOffset, iOrigin);
 527
 528         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 529         if (lpmminfo == NULL)
 530                 return -1;
 531
 532         offset = (iOrigin==SEEK_SET)?(lOffset - lpmminfo->lBufOffset):
 533                  (iOrigin==SEEK_CUR)?(lOffset +
 534                  (lpmminfo->pchNext - lpmminfo->pchBuffer)):-1;
 535
 536         if ((lpmminfo->cchBuffer<0)||
 537             ((offset>=0)&&(offset<=(lpmminfo->pchEndRead-lpmminfo->pchBuffer)))) {
 538                 lpmminfo->pchNext = lpmminfo->pchBuffer + offset;
 539                 GlobalUnlock16(hmmio);
 540                 return lpmminfo->lBufOffset + offset;
 541         }
 542
 543         if ((lpmminfo->fccIOProc==FOURCC_MEM)||mmioFlush(hmmio, MMIO_EMPTYBUF)) {
 544                 GlobalUnlock16(hmmio);
 545                 return -1;
 546         }
 547
 548         offset = mmioSendMessage(hmmio, MMIOM_SEEK, (LPARAM) lOffset, (LPARAM) iOrigin);
 549         lpmminfo->lBufOffset = lpmminfo->lDiskOffset;
 550
 551         GlobalUnlock16(hmmio);
 552         return offset;
 553 }
 554
 555 /**************************************************************************
 556  *                              mmioSeek                [MMSYSTEM.1214]
 557  */
 558 LONG WINAPI mmioSeek16(HMMIO16 hmmio, LONG lOffset, INT16 iOrigin)
 559 {
 560         return mmioSeek(hmmio,lOffset,iOrigin);
 561 }
 562
 563 /**************************************************************************
 564  *                              mmioGetInfo             [MMSYSTEM.1215]
 565  */
 566 UINT16 WINAPI mmioGetInfo16(HMMIO16 hmmio, MMIOINFO16 * lpmmioinfo, UINT16 uFlags)
 567 {
 568         LPMMIOINFO16    lpmminfo;
 569         TRACE("mmioGetInfo\n");
 570         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 571         if (lpmminfo == NULL) return 0;
 572         memcpy(lpmmioinfo, lpmminfo, sizeof(MMIOINFO16));
 573         GlobalUnlock16(hmmio);
 574         return 0;
 575 }
 576
 577 /**************************************************************************
 578  *                              mmioGetInfo             [WINMM.118]
 579  */
 580 UINT WINAPI mmioGetInfo(HMMIO hmmio, MMIOINFO*lpmmioinfo, UINT uFlags)
 581 {
 582         MMIOINFO16      mmioinfo;
 583         LPMMIOINFO16    lpmminfo=&mmioinfo;
 584         UINT16          ret;
 585
 586         TRACE("(0x%04x,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
 587         ret = mmioGetInfo16(hmmio,&mmioinfo,uFlags);
 588         if (!ret)
 589                 return 0;
 590         lpmmioinfo->dwFlags     = lpmminfo->dwFlags;
 591         lpmmioinfo->fccIOProc   = lpmminfo->fccIOProc;
 592         lpmmioinfo->pIOProc     = (LPMMIOPROC)lpmminfo->pIOProc;
 593         lpmmioinfo->wErrorRet   = lpmminfo->wErrorRet;
 594         lpmmioinfo->htask       = lpmminfo->htask;
 595         lpmmioinfo->cchBuffer   = lpmminfo->cchBuffer;
 596         lpmmioinfo->pchBuffer   = lpmminfo->pchBuffer;
 597         lpmmioinfo->pchNext     = lpmminfo->pchNext;
 598         lpmmioinfo->pchEndRead  = lpmminfo->pchEndRead;
 599         lpmmioinfo->pchEndWrite = lpmminfo->pchEndWrite;
 600         lpmmioinfo->lBufOffset  = lpmminfo->lBufOffset;
 601         lpmmioinfo->lDiskOffset = lpmminfo->lDiskOffset;
 602         memcpy(lpmmioinfo->adwInfo,lpmminfo->adwInfo,sizeof(lpmminfo->adwInfo));
 603         lpmmioinfo->dwReserved1 = lpmminfo->dwReserved1;
 604         lpmmioinfo->dwReserved2 = lpmminfo->dwReserved2;
 605         lpmmioinfo->hmmio       = lpmminfo->hmmio;
 606         return 0;
 607 }
 608
 609 /**************************************************************************
 610  *                              mmioSetInfo             [MMSYSTEM.1216]
 611  */
 612 UINT16 WINAPI mmioSetInfo16(HMMIO16 hmmio, const MMIOINFO16 * lpmmioinfo, UINT16 uFlags)
 613 {
 614         LPMMIOINFO16    lpmminfo;
 615         TRACE("mmioSetInfo\n");
 616         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 617         if (lpmminfo == NULL) return 0;
 618         lpmminfo->pchNext       = lpmmioinfo->pchNext;
 619         lpmminfo->pchEndRead    = lpmmioinfo->pchEndRead;
 620         GlobalUnlock16(hmmio);
 621         return 0;
 622 }
 623
 624 /**************************************************************************
 625  *                              mmioSetInfo             [WINMM.130]
 626  */
 627 UINT WINAPI mmioSetInfo(HMMIO hmmio, const MMIOINFO * lpmmioinfo, UINT uFlags)
 628 {
 629         LPMMIOINFO16    lpmminfo;
 630         TRACE("mmioSetInfo\n");
 631         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 632         if (lpmminfo == NULL) return 0;
 633         lpmminfo->pchNext       = lpmmioinfo->pchNext;
 634         lpmminfo->pchEndRead    = lpmmioinfo->pchEndRead;
 635         GlobalUnlock16(hmmio);
 636         return 0;
 637 }
 638
 639 /**************************************************************************
 640 *                               mmioSetBuffer           [WINMM.129]
 641 */
 642 UINT WINAPI mmioSetBuffer(HMMIO hmmio, LPSTR pchBuffer,
 643                                                                                 LONG cchBuffer, UINT uFlags)
 644 {
 645         LPMMIOINFO16    lpmminfo;
 646
 647         if (mmioFlush(hmmio, MMIO_EMPTYBUF) != 0)
 648                 return MMIOERR_CANNOTWRITE;
 649
 650         TRACE("(hmmio=%04x, pchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
 651               hmmio, pchBuffer, cchBuffer, uFlags);
 652
 653         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 654         if (lpmminfo == NULL) return 0;
 655         if ((!cchBuffer || pchBuffer) && lpmminfo->dwFlags&MMIO_ALLOCBUF) {
 656                 GlobalUnlock16(lpmminfo->dwReserved1);
 657                 GlobalFree16(lpmminfo->dwReserved1);
 658                 lpmminfo->dwFlags &= ~MMIO_ALLOCBUF;
 659         }
 660         if (pchBuffer) {
 661                 lpmminfo->pchBuffer = pchBuffer;
 662         } else if (lpmminfo->dwFlags&MMIO_ALLOCBUF) {
 663                 HGLOBAL16 hNewBuf;
 664                 GlobalUnlock16(lpmminfo->dwReserved1);
 665                 hNewBuf = GlobalReAlloc16(lpmminfo->dwReserved1, cchBuffer, 0);
 666                 if (!hNewBuf) {
 667                         /* FIXME: this assumes the memory block didn't move */
 668                         GlobalLock16(lpmminfo->dwReserved1);
 669                         GlobalUnlock16(hmmio);
 670                         return MMIOERR_OUTOFMEMORY;
 671                 }
 672                 lpmminfo->dwReserved1 = hNewBuf;
 673                 lpmminfo->pchBuffer = GlobalLock16(hNewBuf);
 674         } else if (cchBuffer) {
 675                 HGLOBAL16 hNewBuf = GlobalAlloc16(GMEM_MOVEABLE, cchBuffer);
 676                 if (!hNewBuf) {
 677                         GlobalUnlock16(hmmio);
 678                         return MMIOERR_OUTOFMEMORY;
 679                 }
 680                 lpmminfo->dwReserved1 = hNewBuf;
 681                 lpmminfo->pchBuffer = GlobalLock16(hNewBuf);
 682                 lpmminfo->dwFlags |= MMIO_ALLOCBUF;
 683         } else
 684                 lpmminfo->pchBuffer = NULL;
 685         lpmminfo->cchBuffer = cchBuffer;
 686         lpmminfo->pchNext = lpmminfo->pchBuffer;
 687         lpmminfo->pchEndRead = lpmminfo->pchBuffer;
 688         lpmminfo->pchEndWrite = lpmminfo->pchBuffer + cchBuffer;
 689         lpmminfo->lBufOffset = 0;
 690
 691         GlobalUnlock16(hmmio);
 692         return (UINT16) 0;
 693 }
 694
 695 /**************************************************************************
 696 *                               mmioSetBuffer           [MMSYSTEM.1217]
 697 */
 698 UINT16 WINAPI mmioSetBuffer16(HMMIO16 hmmio, LPSTR pchBuffer,
 699                                                                                 LONG cchBuffer, UINT16 uFlags)
 700 {
 701         return mmioSetBuffer(hmmio, pchBuffer, cchBuffer, uFlags);
 702 }
 703
 704 /**************************************************************************
 705  *                              mmioFlush               [WINMM.117]
 706  */
 707 UINT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
 708 {
 709         LPMMIOINFO16    lpmminfo;
 710         TRACE("(%04X, %04X)\n", hmmio, uFlags);
 711         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 712         if (lpmminfo == NULL) return 0;
 713
 714         if ((!lpmminfo->cchBuffer)||(lpmminfo->fccIOProc==FOURCC_MEM)) {
 715                 GlobalUnlock16(hmmio);
 716                 return 0;
 717         }
 718         /* not quite sure what to do here, but I'll guess */
 719         if (lpmminfo->dwFlags & MMIO_DIRTY) {
 720                 mmioSendMessage(hmmio, MMIOM_SEEK,
 721                         (LPARAM) lpmminfo->lBufOffset,
 722                         (LPARAM) SEEK_SET);
 723                 mmioSendMessage(hmmio, MMIOM_WRITE,
 724                         (LPARAM) lpmminfo->pchBuffer,
 725                         (LPARAM) (lpmminfo->pchNext - lpmminfo->pchBuffer) );
 726                 lpmminfo->dwFlags &= ~MMIO_DIRTY;
 727         }
 728         if (uFlags & MMIO_EMPTYBUF) {
 729                 /* seems Windows doesn't do any seeking here, hopefully this
 730                    won't matter, otherwise a slight rewrite is necessary */
 731                 mmioSendMessage(hmmio, MMIOM_SEEK,
 732                         (LPARAM) (lpmminfo->lBufOffset +
 733                                   (lpmminfo->pchNext - lpmminfo->pchBuffer)),
 734                         (LPARAM) SEEK_SET);
 735                 lpmminfo->pchNext = lpmminfo->pchBuffer;
 736                 lpmminfo->pchEndRead = lpmminfo->pchBuffer;
 737                 lpmminfo->lBufOffset = lpmminfo->lDiskOffset;
 738         }
 739
 740         GlobalUnlock16(hmmio);
 741         return 0;
 742 }
 743
 744 /**************************************************************************
 745  *                              mmioFlush               [MMSYSTEM.1218]
 746  */
 747 UINT16 WINAPI mmioFlush16(HMMIO16 hmmio, UINT16 uFlags)
 748 {
 749         return mmioFlush(hmmio,uFlags);
 750 }
 751
 752 /**************************************************************************
 753  *                              mmioAdvance             [MMSYSTEM.1219]
 754  */
 755 UINT WINAPI mmioAdvance(HMMIO hmmio,MMIOINFO*lpmmioinfo,UINT uFlags)
 756 {
 757         LPMMIOINFO16    lpmminfo;
 758         TRACE("mmioAdvance\n");
 759         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 760         if (lpmminfo == NULL) return 0;
 761         if (!lpmminfo->cchBuffer) {
 762                 GlobalUnlock16(hmmio);
 763                 return MMIOERR_UNBUFFERED;
 764         }
 765         lpmminfo->pchNext = lpmmioinfo->pchNext;
 766         if (mmioFlush(hmmio, MMIO_EMPTYBUF)) {
 767                 GlobalUnlock16(hmmio);
 768                 return MMIOERR_CANNOTWRITE;
 769         }
 770         if (uFlags == MMIO_READ)
 771                 lpmmioinfo->pchEndRead = lpmmioinfo->pchBuffer +
 772                     mmioSendMessage(hmmio, MMIOM_READ,
 773                         (LPARAM) lpmmioinfo->pchBuffer,
 774                         (LPARAM) lpmmioinfo->cchBuffer);
 775 #if 0   /* mmioFlush already did the writing */
 776         if (uFlags == MMIO_WRITE)
 777                     mmioSendMessage(hmmio, MMIOM_WRITE,
 778                         (LPARAM) lpmmioinfo->pchBuffer,
 779                         (LPARAM) lpmmioinfo->cchBuffer);
 780 #endif
 781         lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
 782         GlobalUnlock16(hmmio);
 783         return 0;
 784 }
 785
 786 /**************************************************************************
 787  *                              mmioAdvance             [MMSYSTEM.1219]
 788  */
 789 UINT16 WINAPI mmioAdvance16(HMMIO16 hmmio,MMIOINFO16*lpmmioinfo,UINT16 uFlags)
 790 {
 791         LPMMIOINFO16    lpmminfo;
 792         TRACE("mmioAdvance\n");
 793         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 794         if (lpmminfo == NULL) return 0;
 795         if (!lpmminfo->cchBuffer) {
 796                 GlobalUnlock16(hmmio);
 797                 return MMIOERR_UNBUFFERED;
 798         }
 799         lpmminfo->pchNext = lpmmioinfo->pchNext;
 800         if (mmioFlush(hmmio, MMIO_EMPTYBUF)) {
 801                 GlobalUnlock16(hmmio);
 802                 return MMIOERR_CANNOTWRITE;
 803         }
 804         if (uFlags == MMIO_READ)
 805                 lpmmioinfo->pchEndRead = lpmmioinfo->pchBuffer +
 806                     mmioSendMessage(hmmio, MMIOM_READ,
 807                         (LPARAM) lpmmioinfo->pchBuffer,
 808                         (LPARAM) lpmmioinfo->cchBuffer);
 809 #if 0   /* mmioFlush already did the writing */
 810         if (uFlags == MMIO_WRITE)
 811                     mmioSendMessage(hmmio, MMIOM_WRITE,
 812                         (LPARAM) lpmmioinfo->pchBuffer,
 813                         (LPARAM) lpmmioinfo->cchBuffer);
 814 #endif
 815         lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
 816         GlobalUnlock16(hmmio);
 817         return 0;
 818 }
 819
 820 /**************************************************************************
 821  *                              mmioStringToFOURCCA     [WINMM.131]
 822  */
 823 FOURCC WINAPI mmioStringToFOURCCA(LPCSTR sz, UINT uFlags)
 824 {
 825         return mmioStringToFOURCC16(sz,uFlags);
 826 }
 827
 828 /**************************************************************************
 829  *                              mmioStringToFOURCCW     [WINMM.132]
 830  */
 831 FOURCC WINAPI mmioStringToFOURCCW(LPCWSTR sz, UINT uFlags)
 832 {
 833         LPSTR   szA = HEAP_strdupWtoA(GetProcessHeap(),0,sz);
 834         FOURCC  ret = mmioStringToFOURCCA(szA,uFlags);
 835
 836         HeapFree(GetProcessHeap(),0,szA);
 837         return ret;
 838 }
 839
 840 /**************************************************************************
 841  *                              mmioStringToFOURCC      [MMSYSTEM.1220]
 842  */
 843 FOURCC WINAPI mmioStringToFOURCC16(LPCSTR sz, UINT16 uFlags)
 844 {
 845         return mmioFOURCC(sz[0],sz[1],sz[2],sz[3]);
 846 }
 847
 848 /**************************************************************************
 849 *                               mmioInstallIOProc16     [MMSYSTEM.1221]
 850 */
 851 LPMMIOPROC16 WINAPI mmioInstallIOProc16(FOURCC fccIOProc,
 852                                         LPMMIOPROC16 pIOProc, DWORD dwFlags)
 853 {
 854         TRACE("(%ld, %p, %08lX)\n",
 855                                  fccIOProc, pIOProc, dwFlags);
 856
 857         if (dwFlags & MMIO_GLOBALPROC) {
 858                 FIXME(" global procedures not implemented\n");
 859         }
 860
 861         /* just handle the known procedures for now */
 862         switch(dwFlags & (MMIO_INSTALLPROC|MMIO_REMOVEPROC|MMIO_FINDPROC)) {
 863                 case MMIO_INSTALLPROC:
 864                         return NULL;
 865                 case MMIO_REMOVEPROC:
 866                         return NULL;
 867                 case MMIO_FINDPROC:
 868                         if (fccIOProc == FOURCC_DOS)
 869                                 return (LPMMIOPROC16) mmioDosIOProc;
 870                         else if (fccIOProc == FOURCC_MEM)
 871                                 return (LPMMIOPROC16) mmioMemIOProc;
 872                         else
 873                                 return NULL;
 874                 default:
 875                         return NULL;
 876         }
 877 }
 878
 879 /**************************************************************************
 880  *                              mmioInstallIOProcA                                                                 [WINMM.120]
 881  */
 882 LPMMIOPROC WINAPI mmioInstallIOProcA(FOURCC fccIOProc,
 883                                          LPMMIOPROC pIOProc, DWORD dwFlags)
 884 {
 885         FIXME("(%c%c%c%c,%p,0x%08lx) -- empty stub \n",
 886                      (char)((fccIOProc&0xff000000)>>24),
 887                      (char)((fccIOProc&0x00ff0000)>>16),
 888                      (char)((fccIOProc&0x0000ff00)>> 8),
 889                      (char)(fccIOProc&0x000000ff),
 890                      pIOProc, dwFlags );
 891         return 0;
 892 }
 893
 894 /**************************************************************************
 895 *                               mmioSendMessage         [MMSYSTEM.1222]
 896 */
 897 LRESULT WINAPI mmioSendMessage(HMMIO16 hmmio, UINT16 uMessage,
 898                                LPARAM lParam1, LPARAM lParam2)
 899 {
 900         LPMMIOINFO16 lpmminfo;
 901         LRESULT result;
 902         const char *msg = NULL;
 903
 904 #ifdef DEBUG_RUNTIME
 905         switch (uMessage) {
 906 #define msgname(x) case x: msg = #x; break;
 907                 msgname(MMIOM_OPEN);
 908                 msgname(MMIOM_CLOSE);
 909                 msgname(MMIOM_READ);
 910                 msgname(MMIOM_WRITE);
 911                 msgname(MMIOM_WRITEFLUSH);
 912                 msgname(MMIOM_SEEK);
 913                 msgname(MMIOM_RENAME);
 914 #undef msgname
 915         }
 916 #endif
 917
 918         if (msg)
 919                 TRACE("(%04X, %s, %ld, %ld)\n",
 920                                          hmmio, msg, lParam1, lParam2);
 921         else
 922                 TRACE("(%04X, %u, %ld, %ld)\n",
 923                                          hmmio, uMessage, lParam1, lParam2);
 924
 925         lpmminfo = (LPMMIOINFO16)GlobalLock16(hmmio);
 926
 927         if (lpmminfo && lpmminfo->pIOProc)
 928                 result = (*lpmminfo->pIOProc)((LPSTR)lpmminfo, uMessage, lParam1, lParam2);
 929         else
 930                 result = MMSYSERR_INVALPARAM;
 931
 932         GlobalUnlock16(hmmio);
 933
 934         return result;
 935 }
 936
 937 /**************************************************************************
 938 *                               mmioDescend             [MMSYSTEM.1223]
 939 */
 940 UINT16 WINAPI mmioDescend(HMMIO16 hmmio, LPMMCKINFO lpck,
 941                           const MMCKINFO * lpckParent, UINT16 uFlags)
 942 {
 943         DWORD           dwOldPos;
 944         MMCKINFO        searchcki;
 945         char            ckid[5],fcc[5];
 946
 947         TRACE("(%04X, %p, %p, %04X);\n",hmmio,lpck,lpckParent,uFlags);
 948
 949         if (lpck == NULL)
 950             return MMSYSERR_INVALPARAM;
 951
 952         dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
 953         TRACE("dwOldPos=%ld\n", dwOldPos);
 954
 955         if (lpckParent != NULL) {
 956                 TRACE("seek inside parent at %ld !\n", lpckParent->dwDataOffset);
 957                 /* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
 958                 if (dwOldPos < lpckParent->dwDataOffset || dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
 959                    ERR("outside parent chunk\n");
 960                    return MMIOERR_CHUNKNOTFOUND;
 961                 }
 962         }
 963
 964         /* The SDK docu says 'ckid' is used for all cases. Real World
 965          * examples disagree -Marcus,990216.
 966          */
 967
 968         searchcki.fccType = 0;
 969         /* find_chunk looks for 'ckid' */
 970         if (uFlags & MMIO_FINDCHUNK)
 971                 searchcki.ckid = lpck->ckid;
 972         /* find_riff and find_list look for 'fccType' */
 973         if (uFlags & MMIO_FINDLIST) {
 974                 searchcki.ckid = FOURCC_LIST;
 975                 searchcki.fccType = lpck->fccType;
 976         }
 977         if (uFlags & MMIO_FINDRIFF) {
 978                 searchcki.ckid = FOURCC_RIFF;
 979                 searchcki.fccType = lpck->fccType;
 980         }
 981         memcpy(&fcc,&(searchcki.fccType),4);fcc[4]=0;
 982         memcpy(&ckid,&(searchcki.ckid),4);ckid[4]=0;
 983         TRACE("searching for %s.%s\n",ckid,searchcki.fccType?fcc:"<any>");
 984
 985         if (uFlags & (MMIO_FINDCHUNK|MMIO_FINDLIST|MMIO_FINDRIFF)) {
 986                 while (TRUE) {
 987                         LONG ix;
 988
 989                         ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
 990                         if (ix < 2*sizeof(DWORD)) {
 991                                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
 992                                 WARN("return ChunkNotFound\n");
 993                                 return MMIOERR_CHUNKNOTFOUND;
 994                         }
 995                         lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
 996                         if (ix < lpck->dwDataOffset - dwOldPos) {
 997                                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
 998                                 WARN("return ChunkNotFound\n");
 999                                 return MMIOERR_CHUNKNOTFOUND;
1000                         }
1001                         memcpy(ckid,&lpck->ckid,4);
1002                         memcpy(fcc,&lpck->fccType,4);
1003                         TRACE("ckid=%s fcc=%s cksize=%08lX !\n",
1004                                 ckid, searchcki.fccType?fcc:"<unused>",
1005                                 lpck->cksize);
1006                         if ((searchcki.ckid == lpck->ckid) &&
1007                             (!searchcki.fccType ||
1008                               (searchcki.fccType == lpck->fccType)
1009                              )
1010                             )
1011                                 break;
1012
1013                         dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
1014                         mmioSeek(hmmio, dwOldPos, SEEK_SET);
1015                 }
1016                 /* If we were looking for RIFF/LIST chunks, the final dataptr
1017                  * is after the chunkid. If we were just looking for the chunk
1018                  * it is after the cksize. So add 4 in RIFF/LIST case.
1019                  */
1020                 if (uFlags & (MMIO_FINDLIST|MMIO_FINDRIFF))
1021                         lpck->dwDataOffset+=sizeof(DWORD);
1022         } else {
1023                 /* FIXME: unverified, does it do this? */
1024                 if (mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD)) < 3 * sizeof(DWORD)) {
1025                         mmioSeek(hmmio, dwOldPos, SEEK_SET);
1026                         WARN("return ChunkNotFound 2nd\n");
1027                         return MMIOERR_CHUNKNOTFOUND;
1028                 }
1029                 lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1030                 lpck->dwFlags = 0;
1031                 if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1032                         lpck->dwDataOffset += sizeof(DWORD);
1033         }
1034         mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
1035         memcpy(ckid,&(lpck->ckid),4);
1036         TRACE("lpck->ckid=%s lpck->cksize=%ld !\n", ckid, lpck->cksize);
1037         memcpy(fcc,&(lpck->fccType),4);
1038         TRACE("lpck->fccType=%08lX (%s)!\n", lpck->fccType,searchcki.fccType?fcc:"");
1039         return 0;
1040 }
1041
1042 /**************************************************************************
1043  *                              mmioAscend              [WINMM.113]
1044  */
1045 UINT WINAPI mmioAscend(HMMIO hmmio, MMCKINFO * lpck, UINT uFlags)
1046 {
1047         TRACE("(%04X, %p, %04X);\n",
1048                                 hmmio, lpck, uFlags);
1049         if (lpck->dwFlags&MMIO_DIRTY) {
1050                 DWORD   dwOldPos, dwNewSize, dwSizePos;
1051
1052                 TRACE("chunk is marked MMIO_DIRTY, correcting chunk size\n");
1053                 dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1054                 TRACE("dwOldPos=%ld\n", dwOldPos);
1055                 dwNewSize = dwOldPos - lpck->dwDataOffset;
1056                 if (dwNewSize != lpck->cksize) {
1057                         TRACE("dwNewSize=%ld\n", dwNewSize);
1058                         lpck->cksize = dwNewSize;
1059
1060                         dwSizePos = lpck->dwDataOffset - sizeof(DWORD);
1061                         if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1062                                 dwSizePos -= sizeof(DWORD);
1063                         TRACE("dwSizePos=%ld\n", dwSizePos);
1064
1065                         mmioSeek(hmmio, dwSizePos, SEEK_SET);
1066                         mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
1067                 }
1068         }
1069         mmioSeek(hmmio,lpck->dwDataOffset+lpck->cksize,SEEK_SET);
1070
1071         return 0;
1072 }
1073
1074 /**************************************************************************
1075  *                              mmioAscend              [MMSYSTEM.1224]
1076  */
1077 UINT16 WINAPI mmioAscend16(HMMIO16 hmmio, MMCKINFO * lpck, UINT16 uFlags)
1078 {
1079         return mmioAscend(hmmio,lpck,uFlags);
1080 }
1081
1082 /**************************************************************************
1083  *                              mmioCreateChunk         [MMSYSTEM.1225]
1084  */
1085 UINT16 WINAPI mmioCreateChunk16(HMMIO16 hmmio, MMCKINFO * lpck, UINT16 uFlags)
1086 {
1087         DWORD   dwOldPos;
1088         LONG ix;
1089
1090         TRACE("(%04X, %p, %04X);\n",
1091                                 hmmio, lpck, uFlags);
1092
1093         dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1094         TRACE("dwOldPos=%ld\n", dwOldPos);
1095
1096         if (uFlags == MMIO_CREATELIST)
1097                 lpck->ckid = FOURCC_LIST;
1098         else if (uFlags == MMIO_CREATERIFF)
1099                 lpck->ckid = FOURCC_RIFF;
1100
1101         TRACE("ckid=%08lX\n", lpck->ckid);
1102
1103         lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1104         if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1105                 lpck->dwDataOffset += sizeof(DWORD);
1106         lpck->dwFlags = MMIO_DIRTY;
1107
1108         ix = mmioWrite(hmmio, (LPSTR)lpck, lpck->dwDataOffset - dwOldPos);
1109         TRACE("after mmioWrite ix = %ld req = %ld, errno = %d\n",ix,lpck->dwDataOffset - dwOldPos,errno);
1110         if (ix < lpck->dwDataOffset - dwOldPos) {
1111
1112                 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1113                 WARN("return CannotWrite\n");
1114                 return MMIOERR_CANNOTWRITE;
1115         }
1116
1117         return 0;
1118 }
1119
1120 /**************************************************************************
1121  *                                      mmioCreateChunk                                 [WINMM.115]
1122  */
1123 UINT WINAPI mmioCreateChunk(HMMIO hmmio, MMCKINFO * lpck, UINT uFlags)
1124 {
1125         return mmioCreateChunk16(hmmio, lpck, uFlags);
1126 }
1127
1128 /**************************************************************************
1129  *                              mmioRename              [MMSYSTEM.1226]
1130  */
1131 UINT16 WINAPI mmioRename16(LPCSTR szFileName, LPCSTR szNewFileName,
1132                          MMIOINFO16 * lpmmioinfo, DWORD dwRenameFlags)
1133 {
1134         UINT16 result;
1135         LPMMIOINFO16 lpmminfo;
1136         HMMIO16 hmmio;
1137
1138         TRACE("('%s', '%s', %p, %08lX);\n",
1139                                  szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1140
1141         hmmio = GlobalAlloc16(GHND, sizeof(MMIOINFO16));
1142         lpmminfo = (LPMMIOINFO16) GlobalLock16(hmmio);
1143
1144         if (lpmmioinfo)
1145                 memcpy(lpmminfo, lpmmioinfo, sizeof(MMIOINFO16));
1146
1147         /* assume DOS file if not otherwise specified */
1148         if (lpmminfo->fccIOProc == 0 && lpmminfo->pIOProc == NULL) {
1149
1150                 lpmminfo->fccIOProc = mmioFOURCC('D', 'O', 'S', ' ');
1151                 lpmminfo->pIOProc = (LPMMIOPROC16) mmioDosIOProc;
1152
1153         }
1154         /* if just the four character code is present, look up IO proc */
1155         else if (lpmminfo->pIOProc == NULL) {
1156
1157                 lpmminfo->pIOProc = mmioInstallIOProc16(lpmminfo->fccIOProc, NULL, MMIO_FINDPROC);
1158
1159         }
1160         /* (if IO proc specified, use it and specified four character code) */
1161
1162         result = (UINT16) mmioSendMessage(hmmio, MMIOM_RENAME, (LPARAM) szFileName, (LPARAM) szNewFileName);
1163
1164         GlobalUnlock16(hmmio);
1165         GlobalFree16(hmmio);
1166
1167         return result;
1168 }
1169
1170 /**************************************************************************
1171  *                              mmioRenameA                             [WINMM.125]
1172  */
1173 UINT WINAPI mmioRenameA(LPCSTR szFileName, LPCSTR szNewFileName,
1174                          MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1175 {
1176         FIXME("This may fail\n");
1177         return mmioRename16(szFileName, szNewFileName, (MMIOINFO16*)lpmmioinfo, dwRenameFlags);
1178 }
1179
1180 /**************************************************************************
1181  *                              mmioRenameW                             [WINMM.126]
1182  */
1183 UINT WINAPI mmioRenameW(LPCWSTR szFileName, LPCWSTR szNewFileName,
1184                                                                          MMIOINFO* lpmmioinfo, DWORD dwRenameFlags)
1185 {
1186         LPSTR           szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
1187         LPSTR           sznFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szNewFileName);
1188         UINT    ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwRenameFlags);
1189
1190         HeapFree(GetProcessHeap(),0,szFn);
1191         HeapFree(GetProcessHeap(),0,sznFn);
1192         return ret;
1193 }