4 * Copyright 1998 Andrew Taylor
5 * Copyright 1998 Ove Kåven
6 * Copyright 2000,2002 Eric Pouech
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 * + correct handling of global/local IOProcs (and temporary IOProcs)
25 * + mode of mmio objects is not used (read vs write vs readwrite)
27 * + 32 A <=> W message mapping
44 #include "wine/debug.h"
46 WINE_DEFAULT_DEBUG_CHANNEL(mmio);
48 LRESULT (*pFnMmioCallback16)(DWORD,LPMMIOINFO,UINT,LPARAM,LPARAM) /* = NULL */;
50 static WINE_MMIO *MMIOList;
52 /**************************************************************************
53 * mmioDosIOProc [internal]
55 static LRESULT CALLBACK mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
56 LPARAM lParam1, LPARAM lParam2)
58 LRESULT ret = MMSYSERR_NOERROR;
60 TRACE("(%p, %X, 0x%lx, 0x%lx);\n", lpmmioinfo, uMessage, lParam1, lParam2);
66 * lParam1 = szFileName parameter from mmioOpen
68 * Returns: zero on success, error code on error
69 * NOTE: lDiskOffset automatically set to zero
71 LPCSTR szFileName = (LPCSTR)lParam1;
73 if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
74 FIXME("MMIO_GETTEMP not implemented\n");
75 return MMIOERR_CANNOTOPEN;
78 /* if filename NULL, assume open file handle in adwInfo[0] */
81 lpmmioinfo->adwInfo[0] = (DWORD)OpenFile(szFileName, &ofs, lpmmioinfo->dwFlags & 0xFFFF);
83 if (lpmmioinfo->adwInfo[0] == (DWORD)HFILE_ERROR)
84 ret = MMIOERR_CANNOTOPEN;
90 * lParam1 = wFlags parameter from mmioClose
92 * Returns: zero on success, error code on error
94 if (!(lParam1 & MMIO_FHOPEN))
95 _lclose((HFILE)lpmmioinfo->adwInfo[0]);
100 * lParam1 = huge pointer to read buffer
101 * lParam2 = number of bytes to read
102 * Returns: number of bytes read, 0 for EOF, -1 for error (error code
105 ret = _lread((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
107 lpmmioinfo->lDiskOffset += ret;
112 case MMIOM_WRITEFLUSH:
113 /* no internal buffering, so WRITEFLUSH handled same as WRITE */
116 * lParam1 = huge pointer to write buffer
117 * lParam2 = number of bytes to write
118 * Returns: number of bytes written, -1 for error (error code in
121 ret = _hwrite((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
123 lpmmioinfo->lDiskOffset += ret;
128 * lParam1 = new position
129 * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
130 * Returns: new file postion, -1 on error
132 ret = _llseek((HFILE)lpmmioinfo->adwInfo[0], (LONG)lParam1, (LONG)lParam2);
134 lpmmioinfo->lDiskOffset = ret;
141 * Returns: zero on success, non-zero on failure
143 if (!MoveFileA((const char*)lParam1, (const char*)lParam2))
144 ret = MMIOERR_FILENOTFOUND;
148 FIXME("unexpected message %u\n", uMessage);
155 /**************************************************************************
156 * mmioMemIOProc [internal]
158 static LRESULT CALLBACK mmioMemIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
159 LPARAM lParam1, LPARAM lParam2)
161 TRACE("(%p,0x%04x,0x%08lx,0x%08lx)\n", lpmmioinfo, uMessage, lParam1, lParam2);
167 * lParam1 = filename (must be NULL)
169 * Returns: zero on success, error code on error
170 * NOTE: lDiskOffset automatically set to zero
172 /* FIXME: io proc shouldn't change it */
173 if (!(lpmmioinfo->dwFlags & MMIO_CREATE))
174 lpmmioinfo->pchEndRead = lpmmioinfo->pchEndWrite;
175 lpmmioinfo->adwInfo[0] = HFILE_ERROR;
180 * lParam1 = wFlags parameter from mmioClose
182 * Returns: zero on success, error code on error
188 * lParam1 = huge pointer to read buffer
189 * lParam2 = number of bytes to read
190 * Returns: number of bytes read, 0 for EOF, -1 for error (error code
192 * NOTE: lDiskOffset should be updated
194 FIXME("MMIOM_READ on memory files should not occur, buffer may be lost!\n");
198 case MMIOM_WRITEFLUSH:
199 /* no internal buffering, so WRITEFLUSH handled same as WRITE */
202 * lParam1 = huge pointer to write buffer
203 * lParam2 = number of bytes to write
204 * Returns: number of bytes written, -1 for error (error code in
206 * NOTE: lDiskOffset should be updated
208 FIXME("MMIOM_WRITE on memory files should not occur, buffer may be lost!\n");
213 * lParam1 = new position
214 * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
215 * Returns: new file postion, -1 on error
216 * NOTE: lDiskOffset should be updated
218 FIXME("MMIOM_SEEK on memory files should not occur, buffer may be lost!\n");
222 FIXME("unexpected message %u\n", uMessage);
227 /* This array will be the entire list for most apps
228 * Note that temporary ioProcs will be stored with a 0 fourCC code
231 static struct IOProcList defaultProcs[] = {
232 {&defaultProcs[1], FOURCC_DOS, (LPMMIOPROC)mmioDosIOProc, MMIO_PROC_32A, 0},
233 {NULL, FOURCC_MEM, (LPMMIOPROC)mmioMemIOProc, MMIO_PROC_32A, 0},
236 static struct IOProcList* pIOProcListAnchor = &defaultProcs[0];
238 /****************************************************************
239 * MMIO_FindProcNode [INTERNAL]
241 * Finds the ProcList node associated with a given FOURCC code.
243 static struct IOProcList* MMIO_FindProcNode(FOURCC fccIOProc)
245 struct IOProcList* pListNode;
247 for (pListNode = pIOProcListAnchor; pListNode; pListNode = pListNode->pNext) {
248 if (pListNode->fourCC == fccIOProc) {
255 /****************************************************************
256 * MMIO_InstallIOProc [INTERNAL]
258 LPMMIOPROC MMIO_InstallIOProc(FOURCC fccIOProc, LPMMIOPROC pIOProc,
259 DWORD dwFlags, enum mmioProcType type)
261 LPMMIOPROC lpProc = NULL;
262 struct IOProcList* pListNode;
263 struct IOProcList** ppListNode;
265 TRACE("(%08x, %p, %08X, %i)\n", fccIOProc, pIOProc, dwFlags, type);
267 if (dwFlags & MMIO_GLOBALPROC)
268 FIXME("Global procedures not implemented\n");
270 /* just handle the known procedures for now */
271 switch (dwFlags & (MMIO_INSTALLPROC|MMIO_REMOVEPROC|MMIO_FINDPROC)) {
272 case MMIO_INSTALLPROC:
273 /* Create new entry for the IOProc list */
274 pListNode = HeapAlloc(GetProcessHeap(), 0, sizeof(*pListNode));
276 /* Fill in this node */
277 pListNode->fourCC = fccIOProc;
278 pListNode->pIOProc = pIOProc;
279 pListNode->type = type;
280 pListNode->count = 0;
282 /* Stick it on the end of the list */
283 pListNode->pNext = pIOProcListAnchor;
284 pIOProcListAnchor = pListNode;
286 /* Return this IOProc - that's how the caller knows we succeeded */
291 case MMIO_REMOVEPROC:
293 * Search for the node that we're trying to remove
294 * We search for a matching fourCC code if it's non null, or the proc
296 * note that this method won't find the first item on the list, but
297 * since the first two items on this list are ones we won't
298 * let the user delete anyway, that's okay
300 ppListNode = &pIOProcListAnchor;
301 while ((*ppListNode) &&
303 (*ppListNode)->fourCC != fccIOProc :
304 (*ppListNode)->pIOProc != pIOProc))
305 ppListNode = &((*ppListNode)->pNext);
307 if (*ppListNode) { /* found it */
308 /* FIXME: what should be done if an open mmio object uses this proc ?
309 * shall we return an error, nuke the mmio object ?
311 if ((*ppListNode)->count) {
312 ERR("Cannot remove a mmIOProc while in use\n");
315 /* remove it, but only if it isn't builtin */
316 if ((*ppListNode) >= defaultProcs &&
317 (*ppListNode) < defaultProcs + sizeof(defaultProcs)) {
318 WARN("Tried to remove built-in mmio proc. Skipping\n");
321 struct IOProcList* ptmpNode = *ppListNode;
322 lpProc = (*ppListNode)->pIOProc;
323 *ppListNode = (*ppListNode)->pNext;
324 HeapFree(GetProcessHeap(), 0, ptmpNode);
330 if ((pListNode = MMIO_FindProcNode(fccIOProc))) {
331 lpProc = pListNode->pIOProc;
339 /****************************************************************
340 * send_message [INTERNAL]
342 static LRESULT send_message(struct IOProcList* ioProc, LPMMIOINFO mmioinfo,
343 DWORD wMsg, LPARAM lParam1,
344 LPARAM lParam2, enum mmioProcType type)
346 LRESULT result = MMSYSERR_ERROR;
347 LPARAM lp1 = lParam1, lp2 = lParam2;
351 result = MMSYSERR_INVALPARAM;
354 switch (ioProc->type) {
356 if (pFnMmioCallback16)
357 result = pFnMmioCallback16((DWORD)ioProc->pIOProc,
358 mmioinfo, wMsg, lp1, lp2);
362 if (ioProc->type != type) {
363 /* map (lParam1, lParam2) into (lp1, lp2) 32 A<=>W */
364 FIXME("NIY 32 A<=>W mapping\n");
366 result = (ioProc->pIOProc)((LPSTR)mmioinfo, wMsg, lp1, lp2);
369 if (ioProc->type != type) {
370 /* unmap (lParam1, lParam2) into (lp1, lp2) 32 A<=>W */
375 FIXME("Internal error\n");
381 /**************************************************************************
382 * MMIO_ParseExtA [internal]
384 * Parses a filename for the extension.
387 * The FOURCC code for the extension if found, else 0.
389 static FOURCC MMIO_ParseExtA(LPCSTR szFileName)
391 /* Filenames are of the form file.ext{+ABC}
392 For now, we take the last '+' if present */
396 /* Note that ext{Start,End} point to the . and + respectively */
400 TRACE("(%s)\n", debugstr_a(szFileName));
405 /* Find the last '.' */
406 extStart = strrchr(szFileName,'.');
409 ERR("No . in szFileName: %s\n", debugstr_a(szFileName));
413 /* Find the '+' afterwards */
414 extEnd = strchr(extStart,'+');
417 if (extEnd - extStart - 1 > 4)
418 WARN("Extension length > 4\n");
419 lstrcpynA(ext, extStart + 1, min(extEnd-extStart,5));
422 /* No + so just an extension */
423 if (strlen(extStart) > 4) {
424 WARN("Extension length > 4\n");
426 lstrcpynA(ext, extStart + 1, 5);
428 TRACE("Got extension: %s\n", debugstr_a(ext));
430 /* FOURCC codes identifying file-extensions must be uppercase */
431 ret = mmioStringToFOURCCA(ext, MMIO_TOUPPER);
436 /**************************************************************************
437 * MMIO_Get [internal]
439 * Retrieves the mmio object from current process
441 LPWINE_MMIO MMIO_Get(HMMIO h)
443 LPWINE_MMIO wm = NULL;
445 EnterCriticalSection(&WINMM_cs);
446 for (wm = MMIOList; wm; wm = wm->lpNext) {
447 if (wm->info.hmmio == h)
450 LeaveCriticalSection(&WINMM_cs);
454 /**************************************************************************
455 * MMIO_Create [internal]
457 * Creates an internal representation for a mmio instance
459 static LPWINE_MMIO MMIO_Create(void)
461 static WORD MMIO_counter = 0;
464 wm = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINE_MMIO));
466 EnterCriticalSection(&WINMM_cs);
467 /* lookup next unallocated WORD handle, with a non NULL value */
468 while (++MMIO_counter == 0 || MMIO_Get((HMMIO)(ULONG_PTR)MMIO_counter));
469 wm->info.hmmio = (HMMIO)(ULONG_PTR)MMIO_counter;
470 wm->lpNext = MMIOList;
472 LeaveCriticalSection(&WINMM_cs);
477 /**************************************************************************
478 * MMIO_Destroy [internal]
480 * Destroys an internal representation for a mmio instance
482 static BOOL MMIO_Destroy(LPWINE_MMIO wm)
486 EnterCriticalSection(&WINMM_cs);
487 /* search for the matching one... */
489 while (*m && *m != wm) m = &(*m)->lpNext;
493 HeapFree(GetProcessHeap(), 0, wm);
496 LeaveCriticalSection(&WINMM_cs);
497 return wm ? FALSE : TRUE;
500 /****************************************************************
501 * MMIO_Flush [INTERNAL]
503 static MMRESULT MMIO_Flush(WINE_MMIO* wm, UINT uFlags)
505 if (wm->info.cchBuffer && (wm->info.fccIOProc != FOURCC_MEM)) {
506 /* not quite sure what to do here, but I'll guess */
507 if (wm->info.dwFlags & MMIO_DIRTY) {
508 /* FIXME: error handling */
509 send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
510 wm->info.lBufOffset, SEEK_SET, MMIO_PROC_32A);
511 send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
512 (LPARAM)wm->info.pchBuffer,
513 wm->info.pchNext - wm->info.pchBuffer, MMIO_PROC_32A);
515 if (uFlags & MMIO_EMPTYBUF)
516 wm->info.pchNext = wm->info.pchEndRead = wm->info.pchBuffer;
518 wm->info.dwFlags &= ~MMIO_DIRTY;
520 return MMSYSERR_NOERROR;
523 /***************************************************************************
524 * MMIO_GrabNextBuffer [INTERNAL]
526 static LONG MMIO_GrabNextBuffer(LPWINE_MMIO wm, int for_read)
528 LONG size = wm->info.cchBuffer;
530 TRACE("bo=%x do=%x of=%lx\n",
531 wm->info.lBufOffset, wm->info.lDiskOffset,
532 send_message(wm->ioProc, &wm->info, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A));
534 wm->info.lBufOffset = wm->info.lDiskOffset;
535 wm->info.pchNext = wm->info.pchBuffer;
536 wm->info.pchEndRead = wm->info.pchBuffer;
537 wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
539 wm->bBufferLoaded = TRUE;
541 size = send_message(wm->ioProc, &wm->info, MMIOM_READ,
542 (LPARAM)wm->info.pchBuffer, size, MMIO_PROC_32A);
544 wm->info.pchEndRead += size;
546 wm->bBufferLoaded = FALSE;
552 /***************************************************************************
553 * MMIO_SetBuffer [INTERNAL]
555 static MMRESULT MMIO_SetBuffer(WINE_MMIO* wm, void* pchBuffer, LONG cchBuffer,
558 TRACE("(%p %p %d %u)\n", wm, pchBuffer, cchBuffer, uFlags);
560 if (uFlags) return MMSYSERR_INVALPARAM;
561 if (cchBuffer > 0xFFFF)
562 WARN("Untested handling of huge mmio buffers (%d >= 64k)\n", cchBuffer);
564 if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
565 return MMIOERR_CANNOTWRITE;
567 /* free previous buffer if allocated */
568 if (wm->info.dwFlags & MMIO_ALLOCBUF) {
569 HeapFree(GetProcessHeap(), 0, wm->info.pchBuffer);
570 wm->info.pchBuffer = NULL;
571 wm->info.dwFlags &= ~MMIO_ALLOCBUF;
575 wm->info.pchBuffer = pchBuffer;
576 } else if (cchBuffer) {
577 if (!(wm->info.pchBuffer = HeapAlloc(GetProcessHeap(), 0, cchBuffer)))
578 return MMIOERR_OUTOFMEMORY;
579 wm->info.dwFlags |= MMIO_ALLOCBUF;
581 wm->info.pchBuffer = NULL;
584 wm->info.cchBuffer = cchBuffer;
585 wm->info.pchNext = wm->info.pchBuffer;
586 wm->info.pchEndRead = wm->info.pchBuffer;
587 wm->info.pchEndWrite = wm->info.pchBuffer + cchBuffer;
588 wm->info.lBufOffset = 0;
589 wm->bBufferLoaded = FALSE;
591 return MMSYSERR_NOERROR;
594 /**************************************************************************
595 * MMIO_Open [internal]
597 HMMIO MMIO_Open(LPSTR szFileName, MMIOINFO* refmminfo, DWORD dwOpenFlags,
598 enum mmioProcType type)
603 TRACE("('%s', %p, %08X, %d);\n", szFileName, refmminfo, dwOpenFlags, type);
606 refmminfo = &mmioinfo;
608 mmioinfo.fccIOProc = 0;
609 mmioinfo.pIOProc = NULL;
610 mmioinfo.pchBuffer = NULL;
611 mmioinfo.cchBuffer = 0;
612 type = MMIO_PROC_32A;
615 if (dwOpenFlags & (MMIO_PARSE|MMIO_EXIST)) {
616 char buffer[MAX_PATH];
618 if (GetFullPathNameA(szFileName, sizeof(buffer), buffer, NULL) >= sizeof(buffer))
620 if ((dwOpenFlags & MMIO_EXIST) && (GetFileAttributesA(buffer) == INVALID_FILE_ATTRIBUTES))
622 strcpy(szFileName, buffer);
626 if ((wm = MMIO_Create()) == NULL)
629 /* If both params are NULL, then parse the file name if available */
630 if (refmminfo->fccIOProc == 0 && refmminfo->pIOProc == NULL) {
631 wm->info.fccIOProc = MMIO_ParseExtA(szFileName);
632 /* Handle any unhandled/error case. Assume DOS file */
633 if (wm->info.fccIOProc == 0)
634 wm->info.fccIOProc = FOURCC_DOS;
635 if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) {
636 /* If not found, retry with FOURCC_DOS */
637 wm->info.fccIOProc = FOURCC_DOS;
638 if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc)))
641 wm->bTmpIOProc = FALSE;
643 /* if just the four character code is present, look up IO proc */
644 else if (refmminfo->pIOProc == NULL) {
645 wm->info.fccIOProc = refmminfo->fccIOProc;
646 if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
647 wm->bTmpIOProc = FALSE;
649 /* if IO proc specified, use it and specified four character code */
651 wm->info.fccIOProc = refmminfo->fccIOProc;
652 MMIO_InstallIOProc(wm->info.fccIOProc, refmminfo->pIOProc,
653 MMIO_INSTALLPROC, type);
654 if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
655 assert(wm->ioProc->pIOProc == refmminfo->pIOProc);
656 wm->bTmpIOProc = TRUE;
659 wm->bBufferLoaded = FALSE;
662 if (dwOpenFlags & MMIO_ALLOCBUF) {
663 if ((refmminfo->wErrorRet = MMIO_SetBuffer(wm, NULL, MMIO_DEFAULTBUFFER, 0)))
665 } else if (wm->info.fccIOProc == FOURCC_MEM) {
666 refmminfo->wErrorRet = MMIO_SetBuffer(wm, refmminfo->pchBuffer, refmminfo->cchBuffer, 0);
667 if (refmminfo->wErrorRet != MMSYSERR_NOERROR)
669 wm->bBufferLoaded = TRUE;
670 } /* else => unbuffered, wm->info.pchBuffer == NULL */
672 /* see mmioDosIOProc for that one */
673 wm->info.adwInfo[0] = refmminfo->adwInfo[0];
674 wm->info.dwFlags = dwOpenFlags;
676 /* call IO proc to actually open file */
677 refmminfo->wErrorRet = send_message(wm->ioProc, &wm->info, MMIOM_OPEN,
678 (LPARAM)szFileName, 0, MMIO_PROC_32A);
680 /* grab file size, when possible */
681 wm->dwFileSize = GetFileSize((HANDLE)wm->info.adwInfo[0], NULL);
683 if (refmminfo->wErrorRet == 0)
684 return wm->info.hmmio;
686 if (wm->ioProc) wm->ioProc->count--;
692 /**************************************************************************
693 * mmioOpenW [WINMM.@]
695 HMMIO WINAPI mmioOpenW(LPWSTR szFileName, MMIOINFO* lpmmioinfo,
703 INT len = WideCharToMultiByte( CP_ACP, 0, szFileName, -1, NULL, 0, NULL, NULL );
704 szFn = HeapAlloc( GetProcessHeap(), 0, len );
705 if (!szFn) return NULL;
706 WideCharToMultiByte( CP_ACP, 0, szFileName, -1, szFn, len, NULL, NULL );
709 ret = MMIO_Open(szFn, lpmmioinfo, dwOpenFlags, MMIO_PROC_32W);
711 HeapFree(GetProcessHeap(), 0, szFn);
715 /**************************************************************************
716 * mmioOpenA [WINMM.@]
718 HMMIO WINAPI mmioOpenA(LPSTR szFileName, MMIOINFO* lpmmioinfo,
721 return MMIO_Open(szFileName, lpmmioinfo, dwOpenFlags, MMIO_PROC_32A);
724 /**************************************************************************
725 * mmioClose [WINMM.@]
727 MMRESULT WINAPI mmioClose(HMMIO hmmio, UINT uFlags)
732 TRACE("(%p, %04X);\n", hmmio, uFlags);
734 if ((wm = MMIO_Get(hmmio)) == NULL)
735 return MMSYSERR_INVALHANDLE;
737 if ((result = MMIO_Flush(wm, 0)) != MMSYSERR_NOERROR)
740 result = send_message(wm->ioProc, &wm->info, MMIOM_CLOSE,
741 uFlags, 0, MMIO_PROC_32A);
743 MMIO_SetBuffer(wm, NULL, 0, 0);
748 MMIO_InstallIOProc(wm->info.fccIOProc, wm->ioProc->pIOProc,
749 MMIO_REMOVEPROC, wm->ioProc->type);
756 /**************************************************************************
759 LONG WINAPI mmioRead(HMMIO hmmio, HPSTR pch, LONG cch)
764 TRACE("(%p, %p, %d);\n", hmmio, pch, cch);
766 if ((wm = MMIO_Get(hmmio)) == NULL)
769 /* unbuffered case first */
770 if (!wm->info.pchBuffer)
771 return send_message(wm->ioProc, &wm->info, MMIOM_READ,
772 (LPARAM)pch, cch, MMIO_PROC_32A);
774 /* first try from current buffer */
775 if (wm->info.pchNext != wm->info.pchEndRead) {
776 count = wm->info.pchEndRead - wm->info.pchNext;
777 if (count > cch || count < 0) count = cch;
778 memcpy(pch, wm->info.pchNext, count);
779 wm->info.pchNext += count;
785 if (cch && (wm->info.fccIOProc != FOURCC_MEM)) {
786 assert(wm->info.cchBuffer);
791 size = MMIO_GrabNextBuffer(wm, TRUE);
792 if (size <= 0) break;
793 if (size > cch) size = cch;
794 memcpy(pch, wm->info.pchBuffer, size);
795 wm->info.pchNext += size;
802 TRACE("count=%d\n", count);
806 /**************************************************************************
807 * mmioWrite [WINMM.@]
809 LONG WINAPI mmioWrite(HMMIO hmmio, HPCSTR pch, LONG cch)
814 TRACE("(%p, %p, %d);\n", hmmio, pch, cch);
816 if ((wm = MMIO_Get(hmmio)) == NULL)
819 if (wm->info.cchBuffer) {
824 if (wm->info.pchNext != wm->info.pchEndWrite) {
825 count = wm->info.pchEndWrite - wm->info.pchNext;
826 if (count > cch || count < 0) count = cch;
827 memcpy(wm->info.pchNext, pch, count);
828 wm->info.pchNext += count;
832 wm->info.dwFlags |= MMIO_DIRTY;
834 if (wm->info.fccIOProc == FOURCC_MEM) {
835 if (wm->info.adwInfo[0]) {
836 /* from where would we get the memory handle? */
837 FIXME("memory file expansion not implemented!\n");
843 if (wm->info.pchNext == wm->info.pchEndWrite)
845 MMIO_Flush(wm, MMIO_EMPTYBUF);
846 MMIO_GrabNextBuffer(wm, FALSE);
852 count = send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
853 (LPARAM)pch, cch, MMIO_PROC_32A);
854 wm->info.lBufOffset = wm->info.lDiskOffset;
857 TRACE("bytes written=%d\n", count);
861 /**************************************************************************
864 LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
869 TRACE("(%p, %08X, %d);\n", hmmio, lOffset, iOrigin);
871 if ((wm = MMIO_Get(hmmio)) == NULL)
872 return MMSYSERR_INVALHANDLE;
874 /* not buffered, direct seek on file */
875 if (!wm->info.pchBuffer)
876 return send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
877 lOffset, iOrigin, MMIO_PROC_32A);
884 offset = wm->info.lBufOffset + (wm->info.pchNext - wm->info.pchBuffer) + lOffset;
887 offset = ((wm->info.fccIOProc == FOURCC_MEM)? wm->info.cchBuffer : wm->dwFileSize) - lOffset;
893 if (offset && offset >= wm->dwFileSize && wm->info.fccIOProc != FOURCC_MEM) {
894 /* should check that write mode exists */
895 if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
897 wm->info.lBufOffset = offset;
898 wm->info.pchEndRead = wm->info.pchBuffer;
899 wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
900 if ((wm->info.dwFlags & MMIO_RWMODE) == MMIO_READ) {
901 wm->info.lDiskOffset = wm->dwFileSize;
903 } else if ((wm->info.cchBuffer > 0) &&
904 ((offset < wm->info.lBufOffset) ||
905 (offset >= wm->info.lBufOffset + wm->info.cchBuffer) ||
906 !wm->bBufferLoaded)) {
907 /* stay in same buffer ? */
908 /* some memory mapped buffers are defined with -1 as a size */
910 /* condition to change buffer */
911 if ((wm->info.fccIOProc == FOURCC_MEM) ||
912 MMIO_Flush(wm, 0) != MMSYSERR_NOERROR ||
913 /* this also sets the wm->info.lDiskOffset field */
914 send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
915 (offset / wm->info.cchBuffer) * wm->info.cchBuffer,
916 SEEK_SET, MMIO_PROC_32A) == -1)
918 MMIO_GrabNextBuffer(wm, TRUE);
921 wm->info.pchNext = wm->info.pchBuffer + (offset - wm->info.lBufOffset);
923 TRACE("=> %d\n", offset);
927 /**************************************************************************
928 * mmioGetInfo [WINMM.@]
930 MMRESULT WINAPI mmioGetInfo(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
934 TRACE("(%p,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
936 if ((wm = MMIO_Get(hmmio)) == NULL)
937 return MMSYSERR_INVALHANDLE;
939 *lpmmioinfo = wm->info;
940 /* don't expose 16 bit ioproc:s */
941 if (wm->ioProc->type != MMIO_PROC_16)
942 lpmmioinfo->pIOProc = wm->ioProc->pIOProc;
944 return MMSYSERR_NOERROR;
947 /**************************************************************************
948 * mmioSetInfo [WINMM.@]
950 MMRESULT WINAPI mmioSetInfo(HMMIO hmmio, const MMIOINFO* lpmmioinfo, UINT uFlags)
954 TRACE("(%p,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
956 if ((wm = MMIO_Get(hmmio)) == NULL)
957 return MMSYSERR_INVALHANDLE;
959 /* check pointers coherence */
960 if (lpmmioinfo->pchNext < wm->info.pchBuffer ||
961 lpmmioinfo->pchNext > wm->info.pchBuffer + wm->info.cchBuffer ||
962 lpmmioinfo->pchEndRead < wm->info.pchBuffer ||
963 lpmmioinfo->pchEndRead > wm->info.pchBuffer + wm->info.cchBuffer ||
964 lpmmioinfo->pchEndWrite < wm->info.pchBuffer ||
965 lpmmioinfo->pchEndWrite > wm->info.pchBuffer + wm->info.cchBuffer)
966 return MMSYSERR_INVALPARAM;
968 wm->info.pchNext = lpmmioinfo->pchNext;
969 wm->info.pchEndRead = lpmmioinfo->pchEndRead;
971 return MMSYSERR_NOERROR;
974 /**************************************************************************
975 * mmioSetBuffer [WINMM.@]
977 MMRESULT WINAPI mmioSetBuffer(HMMIO hmmio, LPSTR pchBuffer, LONG cchBuffer, UINT uFlags)
981 TRACE("(hmmio=%p, pchBuf=%p, cchBuf=%d, uFlags=%#08x)\n",
982 hmmio, pchBuffer, cchBuffer, uFlags);
984 if ((wm = MMIO_Get(hmmio)) == NULL)
985 return MMSYSERR_INVALHANDLE;
987 return MMIO_SetBuffer(wm, pchBuffer, cchBuffer, uFlags);
990 /**************************************************************************
991 * mmioFlush [WINMM.@]
993 MMRESULT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
997 TRACE("(%p, %04X)\n", hmmio, uFlags);
999 if ((wm = MMIO_Get(hmmio)) == NULL)
1000 return MMSYSERR_INVALHANDLE;
1002 return MMIO_Flush(wm, uFlags);
1005 /**************************************************************************
1006 * mmioAdvance [WINMM.@]
1008 MMRESULT WINAPI mmioAdvance(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1012 TRACE("hmmio=%p, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
1014 /* NOTE: mmioAdvance16 heavily relies on parameters from lpmmioinfo we're using
1015 * here. be sure if you change something here to check mmioAdvance16 as well
1017 if ((wm = MMIO_Get(hmmio)) == NULL)
1018 return MMSYSERR_INVALHANDLE;
1020 if (!wm->info.cchBuffer)
1021 return MMIOERR_UNBUFFERED;
1023 if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1024 return MMSYSERR_INVALPARAM;
1026 if (uFlags == MMIO_WRITE && (lpmmioinfo->dwFlags & MMIO_DIRTY))
1028 send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
1029 lpmmioinfo->lBufOffset, SEEK_SET, MMIO_PROC_32A);
1030 send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
1031 (LPARAM)lpmmioinfo->pchBuffer,
1032 lpmmioinfo->pchNext - lpmmioinfo->pchBuffer, MMIO_PROC_32A);
1033 lpmmioinfo->dwFlags &= ~MMIO_DIRTY;
1035 if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
1036 return MMIOERR_CANNOTWRITE;
1039 wm->dwFileSize = max(wm->dwFileSize, lpmmioinfo->lBufOffset +
1040 (lpmmioinfo->pchNext - lpmmioinfo->pchBuffer));
1042 MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1045 lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1046 lpmmioinfo->pchEndRead = lpmmioinfo->pchBuffer +
1047 (wm->info.pchEndRead - wm->info.pchBuffer);
1048 lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1049 (wm->info.pchEndWrite - wm->info.pchBuffer);
1050 lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1051 lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1053 return MMSYSERR_NOERROR;
1056 /**************************************************************************
1057 * mmioStringToFOURCCA [WINMM.@]
1059 FOURCC WINAPI mmioStringToFOURCCA(LPCSTR sz, UINT uFlags)
1064 for (i = 0; i < 4 && sz[i]; i++) {
1065 if (uFlags & MMIO_TOUPPER) {
1066 cc[i] = toupper(sz[i]);
1072 /* Pad with spaces */
1073 while (i < 4) cc[i++] = ' ';
1075 TRACE("Got '%.4s'\n",cc);
1076 return mmioFOURCC(cc[0],cc[1],cc[2],cc[3]);
1079 /**************************************************************************
1080 * mmioStringToFOURCCW [WINMM.@]
1082 FOURCC WINAPI mmioStringToFOURCCW(LPCWSTR sz, UINT uFlags)
1086 WideCharToMultiByte( CP_ACP, 0, sz, 4, szA, sizeof(szA), NULL, NULL );
1087 return mmioStringToFOURCCA(szA,uFlags);
1090 /**************************************************************************
1091 * mmioInstallIOProcA [WINMM.@]
1093 LPMMIOPROC WINAPI mmioInstallIOProcA(FOURCC fccIOProc,
1094 LPMMIOPROC pIOProc, DWORD dwFlags)
1096 return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32A);
1099 /**************************************************************************
1100 * mmioInstallIOProcW [WINMM.@]
1102 LPMMIOPROC WINAPI mmioInstallIOProcW(FOURCC fccIOProc,
1103 LPMMIOPROC pIOProc, DWORD dwFlags)
1105 return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32W);
1108 /******************************************************************
1113 LRESULT MMIO_SendMessage(HMMIO hmmio, UINT uMessage, LPARAM lParam1,
1114 LPARAM lParam2, enum mmioProcType type)
1118 TRACE("(%p, %u, %ld, %ld, %d)\n", hmmio, uMessage, lParam1, lParam2, type);
1120 if (uMessage < MMIOM_USER)
1121 return MMSYSERR_INVALPARAM;
1123 if ((wm = MMIO_Get(hmmio)) == NULL)
1124 return MMSYSERR_INVALHANDLE;
1126 return send_message(wm->ioProc, &wm->info, uMessage, lParam1, lParam2, type);
1129 /**************************************************************************
1130 * mmioSendMessage [WINMM.@]
1132 LRESULT WINAPI mmioSendMessage(HMMIO hmmio, UINT uMessage,
1133 LPARAM lParam1, LPARAM lParam2)
1135 return MMIO_SendMessage(hmmio, uMessage, lParam1, lParam2, MMIO_PROC_32A);
1138 /**************************************************************************
1139 * mmioDescend [WINMM.@]
1141 MMRESULT WINAPI mmioDescend(HMMIO hmmio, LPMMCKINFO lpck,
1142 const MMCKINFO* lpckParent, UINT uFlags)
1148 TRACE("(%p, %p, %p, %04X);\n", hmmio, lpck, lpckParent, uFlags);
1151 return MMSYSERR_INVALPARAM;
1153 dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1154 TRACE("dwOldPos=%d\n", dwOldPos);
1156 if (lpckParent != NULL) {
1157 TRACE("seek inside parent at %d !\n", lpckParent->dwDataOffset);
1158 /* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
1159 if (dwOldPos < lpckParent->dwDataOffset ||
1160 dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
1161 WARN("outside parent chunk\n");
1162 return MMIOERR_CHUNKNOTFOUND;
1166 /* The SDK docu says 'ckid' is used for all cases. Real World
1167 * examples disagree -Marcus,990216.
1173 /* find_chunk looks for 'ckid' */
1174 if (uFlags & MMIO_FINDCHUNK)
1175 srchCkId = lpck->ckid;
1177 /* find_riff and find_list look for 'fccType' */
1178 if (uFlags & MMIO_FINDLIST)
1180 srchCkId = FOURCC_LIST;
1181 srchType = lpck->fccType;
1184 if (uFlags & MMIO_FINDRIFF)
1186 srchCkId = FOURCC_RIFF;
1187 srchType = lpck->fccType;
1190 TRACE("searching for %4.4s.%4.4s\n",
1191 (LPCSTR)&srchCkId, srchType ? (LPCSTR)&srchType : "any");
1197 ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
1198 if (ix < 2*sizeof(DWORD))
1200 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1201 WARN("return ChunkNotFound\n");
1202 return MMIOERR_CHUNKNOTFOUND;
1205 lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1206 TRACE("ckid=%4.4s fcc=%4.4s cksize=%08X !\n",
1207 (LPCSTR)&lpck->ckid,
1208 srchType ? (LPCSTR)&lpck->fccType:"<na>",
1210 if ( (!srchCkId || (srchCkId == lpck->ckid)) &&
1211 (!srchType || (srchType == lpck->fccType)) )
1214 dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
1215 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1219 /* If we were looking for RIFF/LIST chunks, the final file position
1220 * is after the chunkid. If we were just looking for the chunk
1221 * it is after the cksize. So add 4 in RIFF/LIST case.
1223 if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1224 mmioSeek(hmmio, lpck->dwDataOffset + sizeof(DWORD), SEEK_SET);
1226 mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
1227 TRACE("lpck: ckid=%.4s, cksize=%d, dwDataOffset=%d fccType=%08X (%.4s)!\n",
1228 (LPSTR)&lpck->ckid, lpck->cksize, lpck->dwDataOffset,
1229 lpck->fccType, srchType?(LPSTR)&lpck->fccType:"");
1230 return MMSYSERR_NOERROR;
1233 /**************************************************************************
1234 * mmioAscend [WINMM.@]
1236 MMRESULT WINAPI mmioAscend(HMMIO hmmio, LPMMCKINFO lpck, UINT uFlags)
1238 TRACE("(%p, %p, %04X);\n", hmmio, lpck, uFlags);
1240 if (lpck->dwFlags & MMIO_DIRTY) {
1241 DWORD dwOldPos, dwNewSize;
1243 TRACE("Chunk is dirty, checking if chunk's size is correct\n");
1244 dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1245 TRACE("dwOldPos=%d lpck->dwDataOffset = %d\n", dwOldPos, lpck->dwDataOffset);
1246 dwNewSize = dwOldPos - lpck->dwDataOffset;
1247 if (dwNewSize != lpck->cksize) {
1248 TRACE("Nope: lpck->cksize=%d dwNewSize=%d\n", lpck->cksize, dwNewSize);
1249 lpck->cksize = dwNewSize;
1251 /* pad odd size with 0 */
1252 if (dwNewSize & 1) {
1254 mmioWrite(hmmio, &ch, 1);
1256 mmioSeek(hmmio, lpck->dwDataOffset - sizeof(DWORD), SEEK_SET);
1257 mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
1262 mmioSeek(hmmio, lpck->dwDataOffset + ((lpck->cksize + 1) & ~1), SEEK_SET);
1264 return MMSYSERR_NOERROR;
1267 /**************************************************************************
1268 * mmioCreateChunk [WINMM.@]
1270 MMRESULT WINAPI mmioCreateChunk(HMMIO hmmio, MMCKINFO* lpck, UINT uFlags)
1276 TRACE("(%p, %p, %04X);\n", hmmio, lpck, uFlags);
1278 dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1279 TRACE("dwOldPos=%d\n", dwOldPos);
1281 if (uFlags == MMIO_CREATELIST)
1282 lpck->ckid = FOURCC_LIST;
1283 else if (uFlags == MMIO_CREATERIFF)
1284 lpck->ckid = FOURCC_RIFF;
1286 TRACE("ckid=%.4s\n", (LPSTR)&lpck->ckid);
1288 size = 2 * sizeof(DWORD);
1289 lpck->dwDataOffset = dwOldPos + size;
1291 if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1292 size += sizeof(DWORD);
1293 lpck->dwFlags = MMIO_DIRTY;
1295 ix = mmioWrite(hmmio, (LPSTR)lpck, size);
1296 TRACE("after mmioWrite ix = %d req = %d, errno = %d\n", ix, size, errno);
1298 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1299 WARN("return CannotWrite\n");
1300 return MMIOERR_CANNOTWRITE;
1303 return MMSYSERR_NOERROR;
1306 /**************************************************************************
1307 * mmioRenameA [WINMM.@]
1309 MMRESULT WINAPI mmioRenameA(LPCSTR szFileName, LPCSTR szNewFileName,
1310 const MMIOINFO* lpmmioinfo, DWORD dwFlags)
1312 struct IOProcList* ioProc = NULL;
1313 struct IOProcList tmp;
1316 TRACE("('%s', '%s', %p, %08X);\n",
1317 debugstr_a(szFileName), debugstr_a(szNewFileName), lpmmioinfo, dwFlags);
1319 /* If both params are NULL, then parse the file name */
1320 if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1322 fcc = MMIO_ParseExtA(szFileName);
1323 if (fcc) ioProc = MMIO_FindProcNode(fcc);
1326 /* Handle any unhandled/error case from above. Assume DOS file */
1327 if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL && ioProc == NULL))
1328 ioProc = MMIO_FindProcNode(FOURCC_DOS);
1329 /* if just the four character code is present, look up IO proc */
1330 else if (lpmmioinfo->pIOProc == NULL)
1331 ioProc = MMIO_FindProcNode(lpmmioinfo->fccIOProc);
1332 else /* use relevant ioProc */
1335 tmp.fourCC = lpmmioinfo->fccIOProc;
1336 tmp.pIOProc = lpmmioinfo->pIOProc;
1337 tmp.type = MMIO_PROC_32A;
1341 /* FIXME: should we actually pass lpmmioinfo down the drain ???
1342 * or make a copy of it because it's const ???
1344 return send_message(ioProc, (MMIOINFO*)lpmmioinfo, MMIOM_RENAME,
1345 (LPARAM)szFileName, (LPARAM)szNewFileName, MMIO_PROC_32A);
1348 /**************************************************************************
1349 * mmioRenameW [WINMM.@]
1351 MMRESULT WINAPI mmioRenameW(LPCWSTR szFileName, LPCWSTR szNewFileName,
1352 const MMIOINFO* lpmmioinfo, DWORD dwFlags)
1356 UINT ret = MMSYSERR_NOMEM;
1361 len = WideCharToMultiByte( CP_ACP, 0, szFileName, -1, NULL, 0, NULL, NULL );
1362 szFn = HeapAlloc( GetProcessHeap(), 0, len );
1363 if (!szFn) goto done;
1364 WideCharToMultiByte( CP_ACP, 0, szFileName, -1, szFn, len, NULL, NULL );
1368 len = WideCharToMultiByte( CP_ACP, 0, szNewFileName, -1, NULL, 0, NULL, NULL );
1369 sznFn = HeapAlloc( GetProcessHeap(), 0, len );
1370 if (!sznFn) goto done;
1371 WideCharToMultiByte( CP_ACP, 0, szNewFileName, -1, sznFn, len, NULL, NULL );
1374 ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwFlags);
1377 HeapFree(GetProcessHeap(),0,szFn);
1378 HeapFree(GetProcessHeap(),0,sznFn);