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 /**************************************************************************
51 * mmioDosIOProc [internal]
53 static LRESULT CALLBACK mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
54 LPARAM lParam1, LPARAM lParam2)
56 LRESULT ret = MMSYSERR_NOERROR;
58 TRACE("(%p, %X, 0x%lx, 0x%lx);\n", lpmmioinfo, uMessage, lParam1, lParam2);
64 * lParam1 = szFileName parameter from mmioOpen
66 * Returns: zero on success, error code on error
67 * NOTE: lDiskOffset automatically set to zero
69 LPCSTR szFileName = (LPCSTR)lParam1;
71 if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
72 FIXME("MMIO_GETTEMP not implemented\n");
73 return MMIOERR_CANNOTOPEN;
76 /* if filename NULL, assume open file handle in adwInfo[0] */
79 lpmmioinfo->adwInfo[0] = (DWORD)OpenFile(szFileName, &ofs, lpmmioinfo->dwFlags & 0xFFFF);
81 if (lpmmioinfo->adwInfo[0] == (DWORD)HFILE_ERROR)
82 ret = MMIOERR_CANNOTOPEN;
88 * lParam1 = wFlags parameter from mmioClose
90 * Returns: zero on success, error code on error
92 if (!(lParam1 & MMIO_FHOPEN))
93 _lclose((HFILE)lpmmioinfo->adwInfo[0]);
98 * lParam1 = huge pointer to read buffer
99 * lParam2 = number of bytes to read
100 * Returns: number of bytes read, 0 for EOF, -1 for error (error code
103 ret = _lread((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
105 lpmmioinfo->lDiskOffset += ret;
110 case MMIOM_WRITEFLUSH:
111 /* no internal buffering, so WRITEFLUSH handled same as WRITE */
114 * lParam1 = huge pointer to write buffer
115 * lParam2 = number of bytes to write
116 * Returns: number of bytes written, -1 for error (error code in
119 ret = _hwrite((HFILE)lpmmioinfo->adwInfo[0], (HPSTR)lParam1, (LONG)lParam2);
121 lpmmioinfo->lDiskOffset += ret;
126 * lParam1 = new position
127 * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
128 * Returns: new file postion, -1 on error
130 ret = _llseek((HFILE)lpmmioinfo->adwInfo[0], (LONG)lParam1, (LONG)lParam2);
132 lpmmioinfo->lDiskOffset = ret;
139 * Returns: zero on success, non-zero on failure
141 if (!MoveFileA((const char*)lParam1, (const char*)lParam2))
142 ret = MMIOERR_FILENOTFOUND;
146 FIXME("unexpected message %u\n", uMessage);
153 /**************************************************************************
154 * mmioMemIOProc [internal]
156 static LRESULT CALLBACK mmioMemIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
157 LPARAM lParam1, LPARAM lParam2)
159 TRACE("(%p,0x%04x,0x%08lx,0x%08lx)\n", lpmmioinfo, uMessage, lParam1, lParam2);
165 * lParam1 = filename (must be NULL)
167 * Returns: zero on success, error code on error
168 * NOTE: lDiskOffset automatically set to zero
170 /* FIXME: io proc shouldn't change it */
171 if (!(lpmmioinfo->dwFlags & MMIO_CREATE))
172 lpmmioinfo->pchEndRead = lpmmioinfo->pchEndWrite;
173 lpmmioinfo->adwInfo[0] = HFILE_ERROR;
178 * lParam1 = wFlags parameter from mmioClose
180 * Returns: zero on success, error code on error
186 * lParam1 = huge pointer to read buffer
187 * lParam2 = number of bytes to read
188 * Returns: number of bytes read, 0 for EOF, -1 for error (error code
190 * NOTE: lDiskOffset should be updated
192 FIXME("MMIOM_READ on memory files should not occur, buffer may be lost!\n");
196 case MMIOM_WRITEFLUSH:
197 /* no internal buffering, so WRITEFLUSH handled same as WRITE */
200 * lParam1 = huge pointer to write buffer
201 * lParam2 = number of bytes to write
202 * Returns: number of bytes written, -1 for error (error code in
204 * NOTE: lDiskOffset should be updated
206 FIXME("MMIOM_WRITE on memory files should not occur, buffer may be lost!\n");
211 * lParam1 = new position
212 * lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
213 * Returns: new file postion, -1 on error
214 * NOTE: lDiskOffset should be updated
216 FIXME("MMIOM_SEEK on memory files should not occur, buffer may be lost!\n");
220 FIXME("unexpected message %u\n", uMessage);
225 /* This array will be the entire list for most apps
226 * Note that temporary ioProcs will be stored with a 0 fourCC code
229 static struct IOProcList defaultProcs[] = {
230 {&defaultProcs[1], FOURCC_DOS, (LPMMIOPROC)mmioDosIOProc, MMIO_PROC_32A, 0},
231 {NULL, FOURCC_MEM, (LPMMIOPROC)mmioMemIOProc, MMIO_PROC_32A, 0},
234 static struct IOProcList* pIOProcListAnchor = &defaultProcs[0];
236 /****************************************************************
237 * MMIO_FindProcNode [INTERNAL]
239 * Finds the ProcList node associated with a given FOURCC code.
241 static struct IOProcList* MMIO_FindProcNode(FOURCC fccIOProc)
243 struct IOProcList* pListNode;
245 for (pListNode = pIOProcListAnchor; pListNode; pListNode = pListNode->pNext) {
246 if (pListNode->fourCC == fccIOProc) {
253 /****************************************************************
254 * MMIO_InstallIOProc [INTERNAL]
256 LPMMIOPROC MMIO_InstallIOProc(FOURCC fccIOProc, LPMMIOPROC pIOProc,
257 DWORD dwFlags, enum mmioProcType type)
259 LPMMIOPROC lpProc = NULL;
260 struct IOProcList* pListNode;
261 struct IOProcList** ppListNode;
263 TRACE("(%08x, %p, %08X, %i)\n", fccIOProc, pIOProc, dwFlags, type);
265 if (dwFlags & MMIO_GLOBALPROC)
266 FIXME("Global procedures not implemented\n");
268 /* just handle the known procedures for now */
269 switch (dwFlags & (MMIO_INSTALLPROC|MMIO_REMOVEPROC|MMIO_FINDPROC)) {
270 case MMIO_INSTALLPROC:
271 /* Create new entry for the IOProc list */
272 pListNode = HeapAlloc(GetProcessHeap(), 0, sizeof(*pListNode));
274 /* Fill in this node */
275 pListNode->fourCC = fccIOProc;
276 pListNode->pIOProc = pIOProc;
277 pListNode->type = type;
278 pListNode->count = 0;
280 /* Stick it on the end of the list */
281 pListNode->pNext = pIOProcListAnchor;
282 pIOProcListAnchor = pListNode;
284 /* Return this IOProc - that's how the caller knows we succeeded */
289 case MMIO_REMOVEPROC:
291 * Search for the node that we're trying to remove
292 * We search for a matching fourCC code if it's non null, or the proc
294 * note that this method won't find the first item on the list, but
295 * since the first two items on this list are ones we won't
296 * let the user delete anyway, that's okay
298 ppListNode = &pIOProcListAnchor;
299 while ((*ppListNode) &&
301 (*ppListNode)->fourCC != fccIOProc :
302 (*ppListNode)->pIOProc != pIOProc))
303 ppListNode = &((*ppListNode)->pNext);
305 if (*ppListNode) { /* found it */
306 /* FIXME: what should be done if an open mmio object uses this proc ?
307 * shall we return an error, nuke the mmio object ?
309 if ((*ppListNode)->count) {
310 ERR("Cannot remove a mmIOProc while in use\n");
313 /* remove it, but only if it isn't builtin */
314 if ((*ppListNode) >= defaultProcs &&
315 (*ppListNode) < defaultProcs + sizeof(defaultProcs)) {
316 WARN("Tried to remove built-in mmio proc. Skipping\n");
319 struct IOProcList* ptmpNode = *ppListNode;
320 lpProc = (*ppListNode)->pIOProc;
321 *ppListNode = (*ppListNode)->pNext;
322 HeapFree(GetProcessHeap(), 0, ptmpNode);
328 if ((pListNode = MMIO_FindProcNode(fccIOProc))) {
329 lpProc = pListNode->pIOProc;
337 /****************************************************************
338 * send_message [INTERNAL]
340 static LRESULT send_message(struct IOProcList* ioProc, LPMMIOINFO mmioinfo,
341 DWORD wMsg, LPARAM lParam1,
342 LPARAM lParam2, enum mmioProcType type)
344 LRESULT result = MMSYSERR_ERROR;
345 LPARAM lp1 = lParam1, lp2 = lParam2;
349 result = MMSYSERR_INVALPARAM;
352 switch (ioProc->type) {
354 if (pFnMmioCallback16)
355 result = pFnMmioCallback16((DWORD)ioProc->pIOProc,
356 mmioinfo, wMsg, lp1, lp2);
360 if (ioProc->type != type) {
361 /* map (lParam1, lParam2) into (lp1, lp2) 32 A<=>W */
362 FIXME("NIY 32 A<=>W mapping\n");
364 result = (ioProc->pIOProc)((LPSTR)mmioinfo, wMsg, lp1, lp2);
367 if (ioProc->type != type) {
368 /* unmap (lParam1, lParam2) into (lp1, lp2) 32 A<=>W */
373 FIXME("Internal error\n");
379 /**************************************************************************
380 * MMIO_ParseExtA [internal]
382 * Parses a filename for the extension.
385 * The FOURCC code for the extension if found, else 0.
387 static FOURCC MMIO_ParseExtA(LPCSTR szFileName)
389 /* Filenames are of the form file.ext{+ABC}
390 For now, we take the last '+' if present */
394 /* Note that ext{Start,End} point to the . and + respectively */
398 TRACE("(%s)\n", debugstr_a(szFileName));
403 /* Find the last '.' */
404 extStart = strrchr(szFileName,'.');
407 ERR("No . in szFileName: %s\n", debugstr_a(szFileName));
411 /* Find the '+' afterwards */
412 extEnd = strchr(extStart,'+');
415 if (extEnd - extStart - 1 > 4)
416 WARN("Extension length > 4\n");
417 lstrcpynA(ext, extStart + 1, min(extEnd-extStart,5));
420 /* No + so just an extension */
421 if (strlen(extStart) > 4) {
422 WARN("Extension length > 4\n");
424 lstrcpynA(ext, extStart + 1, 5);
426 TRACE("Got extension: %s\n", debugstr_a(ext));
428 /* FOURCC codes identifying file-extensions must be uppercase */
429 ret = mmioStringToFOURCCA(ext, MMIO_TOUPPER);
434 /**************************************************************************
435 * MMIO_Get [internal]
437 * Retrieves the mmio object from current process
439 LPWINE_MMIO MMIO_Get(HMMIO h)
441 LPWINE_MMIO wm = NULL;
443 EnterCriticalSection(&WINMM_IData.cs);
444 for (wm = WINMM_IData.lpMMIO; wm; wm = wm->lpNext) {
445 if (wm->info.hmmio == h)
448 LeaveCriticalSection(&WINMM_IData.cs);
452 /**************************************************************************
453 * MMIO_Create [internal]
455 * Creates an internal representation for a mmio instance
457 static LPWINE_MMIO MMIO_Create(void)
459 static WORD MMIO_counter = 0;
462 wm = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(WINE_MMIO));
464 EnterCriticalSection(&WINMM_IData.cs);
465 /* lookup next unallocated WORD handle, with a non NULL value */
466 while (++MMIO_counter == 0 || MMIO_Get((HMMIO)(ULONG_PTR)MMIO_counter));
467 wm->info.hmmio = (HMMIO)(ULONG_PTR)MMIO_counter;
468 wm->lpNext = WINMM_IData.lpMMIO;
469 WINMM_IData.lpMMIO = wm;
470 LeaveCriticalSection(&WINMM_IData.cs);
475 /**************************************************************************
476 * MMIO_Destroy [internal]
478 * Destroys an internal representation for a mmio instance
480 static BOOL MMIO_Destroy(LPWINE_MMIO wm)
484 EnterCriticalSection(&WINMM_IData.cs);
485 /* search for the matching one... */
486 m = &(WINMM_IData.lpMMIO);
487 while (*m && *m != wm) m = &(*m)->lpNext;
491 HeapFree(GetProcessHeap(), 0, wm);
494 LeaveCriticalSection(&WINMM_IData.cs);
495 return wm ? FALSE : TRUE;
498 /****************************************************************
499 * MMIO_Flush [INTERNAL]
501 static MMRESULT MMIO_Flush(WINE_MMIO* wm, UINT uFlags)
503 if (wm->info.cchBuffer && (wm->info.fccIOProc != FOURCC_MEM)) {
504 /* not quite sure what to do here, but I'll guess */
505 if (wm->info.dwFlags & MMIO_DIRTY) {
506 /* FIXME: error handling */
507 send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
508 wm->info.lBufOffset, SEEK_SET, MMIO_PROC_32A);
509 send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
510 (LPARAM)wm->info.pchBuffer,
511 wm->info.pchNext - wm->info.pchBuffer, MMIO_PROC_32A);
513 if (uFlags & MMIO_EMPTYBUF)
514 wm->info.pchNext = wm->info.pchEndRead = wm->info.pchBuffer;
516 wm->info.dwFlags &= ~MMIO_DIRTY;
518 return MMSYSERR_NOERROR;
521 /***************************************************************************
522 * MMIO_GrabNextBuffer [INTERNAL]
524 static LONG MMIO_GrabNextBuffer(LPWINE_MMIO wm, int for_read)
526 LONG size = wm->info.cchBuffer;
528 TRACE("bo=%x do=%x of=%lx\n",
529 wm->info.lBufOffset, wm->info.lDiskOffset,
530 send_message(wm->ioProc, &wm->info, MMIOM_SEEK, 0, SEEK_CUR, MMIO_PROC_32A));
532 wm->info.lBufOffset = wm->info.lDiskOffset;
533 wm->info.pchNext = wm->info.pchBuffer;
534 wm->info.pchEndRead = wm->info.pchBuffer;
535 wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
537 wm->bBufferLoaded = TRUE;
539 size = send_message(wm->ioProc, &wm->info, MMIOM_READ,
540 (LPARAM)wm->info.pchBuffer, size, MMIO_PROC_32A);
542 wm->info.pchEndRead += size;
544 wm->bBufferLoaded = FALSE;
550 /***************************************************************************
551 * MMIO_SetBuffer [INTERNAL]
553 static MMRESULT MMIO_SetBuffer(WINE_MMIO* wm, void* pchBuffer, LONG cchBuffer,
556 TRACE("(%p %p %d %u)\n", wm, pchBuffer, cchBuffer, uFlags);
558 if (uFlags) return MMSYSERR_INVALPARAM;
559 if (cchBuffer > 0xFFFF)
560 WARN("Untested handling of huge mmio buffers (%d >= 64k)\n", cchBuffer);
562 if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
563 return MMIOERR_CANNOTWRITE;
565 /* free previous buffer if allocated */
566 if (wm->info.dwFlags & MMIO_ALLOCBUF) {
567 HeapFree(GetProcessHeap(), 0, wm->info.pchBuffer);
568 wm->info.pchBuffer = NULL;
569 wm->info.dwFlags &= ~MMIO_ALLOCBUF;
573 wm->info.pchBuffer = pchBuffer;
574 } else if (cchBuffer) {
575 if (!(wm->info.pchBuffer = HeapAlloc(GetProcessHeap(), 0, cchBuffer)))
576 return MMIOERR_OUTOFMEMORY;
577 wm->info.dwFlags |= MMIO_ALLOCBUF;
579 wm->info.pchBuffer = NULL;
582 wm->info.cchBuffer = cchBuffer;
583 wm->info.pchNext = wm->info.pchBuffer;
584 wm->info.pchEndRead = wm->info.pchBuffer;
585 wm->info.pchEndWrite = wm->info.pchBuffer + cchBuffer;
586 wm->info.lBufOffset = 0;
587 wm->bBufferLoaded = FALSE;
589 return MMSYSERR_NOERROR;
592 /**************************************************************************
593 * MMIO_Open [internal]
595 HMMIO MMIO_Open(LPSTR szFileName, MMIOINFO* refmminfo, DWORD dwOpenFlags,
596 enum mmioProcType type)
601 TRACE("('%s', %p, %08X, %d);\n", szFileName, refmminfo, dwOpenFlags, type);
604 refmminfo = &mmioinfo;
606 mmioinfo.fccIOProc = 0;
607 mmioinfo.pIOProc = NULL;
608 mmioinfo.pchBuffer = NULL;
609 mmioinfo.cchBuffer = 0;
610 type = MMIO_PROC_32A;
613 if (dwOpenFlags & (MMIO_PARSE|MMIO_EXIST)) {
614 char buffer[MAX_PATH];
616 if (GetFullPathNameA(szFileName, sizeof(buffer), buffer, NULL) >= sizeof(buffer))
618 if ((dwOpenFlags & MMIO_EXIST) && (GetFileAttributesA(buffer) == INVALID_FILE_ATTRIBUTES))
620 strcpy(szFileName, buffer);
624 if ((wm = MMIO_Create()) == NULL)
627 /* If both params are NULL, then parse the file name if available */
628 if (refmminfo->fccIOProc == 0 && refmminfo->pIOProc == NULL) {
629 wm->info.fccIOProc = MMIO_ParseExtA(szFileName);
630 /* Handle any unhandled/error case. Assume DOS file */
631 if (wm->info.fccIOProc == 0)
632 wm->info.fccIOProc = FOURCC_DOS;
633 if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) {
634 /* If not found, retry with FOURCC_DOS */
635 wm->info.fccIOProc = FOURCC_DOS;
636 if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc)))
639 wm->bTmpIOProc = FALSE;
641 /* if just the four character code is present, look up IO proc */
642 else if (refmminfo->pIOProc == NULL) {
643 wm->info.fccIOProc = refmminfo->fccIOProc;
644 if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
645 wm->bTmpIOProc = FALSE;
647 /* if IO proc specified, use it and specified four character code */
649 wm->info.fccIOProc = refmminfo->fccIOProc;
650 MMIO_InstallIOProc(wm->info.fccIOProc, refmminfo->pIOProc,
651 MMIO_INSTALLPROC, type);
652 if (!(wm->ioProc = MMIO_FindProcNode(wm->info.fccIOProc))) goto error2;
653 assert(wm->ioProc->pIOProc == refmminfo->pIOProc);
654 wm->bTmpIOProc = TRUE;
657 wm->bBufferLoaded = FALSE;
660 if (dwOpenFlags & MMIO_ALLOCBUF) {
661 if ((refmminfo->wErrorRet = MMIO_SetBuffer(wm, NULL, MMIO_DEFAULTBUFFER, 0)))
663 } else if (wm->info.fccIOProc == FOURCC_MEM) {
664 refmminfo->wErrorRet = MMIO_SetBuffer(wm, refmminfo->pchBuffer, refmminfo->cchBuffer, 0);
665 if (refmminfo->wErrorRet != MMSYSERR_NOERROR)
667 wm->bBufferLoaded = TRUE;
668 } /* else => unbuffered, wm->info.pchBuffer == NULL */
670 /* see mmioDosIOProc for that one */
671 wm->info.adwInfo[0] = refmminfo->adwInfo[0];
672 wm->info.dwFlags = dwOpenFlags;
674 /* call IO proc to actually open file */
675 refmminfo->wErrorRet = send_message(wm->ioProc, &wm->info, MMIOM_OPEN,
676 (LPARAM)szFileName, 0, MMIO_PROC_32A);
678 /* grab file size, when possible */
679 wm->dwFileSize = GetFileSize((HANDLE)wm->info.adwInfo[0], NULL);
681 if (refmminfo->wErrorRet == 0)
682 return wm->info.hmmio;
684 if (wm->ioProc) wm->ioProc->count--;
690 /**************************************************************************
691 * mmioOpenW [WINMM.@]
693 HMMIO WINAPI mmioOpenW(LPWSTR szFileName, MMIOINFO* lpmmioinfo,
701 INT len = WideCharToMultiByte( CP_ACP, 0, szFileName, -1, NULL, 0, NULL, NULL );
702 szFn = HeapAlloc( GetProcessHeap(), 0, len );
703 if (!szFn) return NULL;
704 WideCharToMultiByte( CP_ACP, 0, szFileName, -1, szFn, len, NULL, NULL );
707 ret = MMIO_Open(szFn, lpmmioinfo, dwOpenFlags, MMIO_PROC_32W);
709 HeapFree(GetProcessHeap(), 0, szFn);
713 /**************************************************************************
714 * mmioOpenA [WINMM.@]
716 HMMIO WINAPI mmioOpenA(LPSTR szFileName, MMIOINFO* lpmmioinfo,
719 return MMIO_Open(szFileName, lpmmioinfo, dwOpenFlags, MMIO_PROC_32A);
722 /**************************************************************************
723 * mmioClose [WINMM.@]
725 MMRESULT WINAPI mmioClose(HMMIO hmmio, UINT uFlags)
730 TRACE("(%p, %04X);\n", hmmio, uFlags);
732 if ((wm = MMIO_Get(hmmio)) == NULL)
733 return MMSYSERR_INVALHANDLE;
735 if ((result = MMIO_Flush(wm, 0)) != MMSYSERR_NOERROR)
738 result = send_message(wm->ioProc, &wm->info, MMIOM_CLOSE,
739 uFlags, 0, MMIO_PROC_32A);
741 MMIO_SetBuffer(wm, NULL, 0, 0);
746 MMIO_InstallIOProc(wm->info.fccIOProc, wm->ioProc->pIOProc,
747 MMIO_REMOVEPROC, wm->ioProc->type);
754 /**************************************************************************
757 LONG WINAPI mmioRead(HMMIO hmmio, HPSTR pch, LONG cch)
762 TRACE("(%p, %p, %d);\n", hmmio, pch, cch);
764 if ((wm = MMIO_Get(hmmio)) == NULL)
767 /* unbuffered case first */
768 if (!wm->info.pchBuffer)
769 return send_message(wm->ioProc, &wm->info, MMIOM_READ,
770 (LPARAM)pch, cch, MMIO_PROC_32A);
772 /* first try from current buffer */
773 if (wm->info.pchNext != wm->info.pchEndRead) {
774 count = wm->info.pchEndRead - wm->info.pchNext;
775 if (count > cch || count < 0) count = cch;
776 memcpy(pch, wm->info.pchNext, count);
777 wm->info.pchNext += count;
783 if (cch && (wm->info.fccIOProc != FOURCC_MEM)) {
784 assert(wm->info.cchBuffer);
789 size = MMIO_GrabNextBuffer(wm, TRUE);
790 if (size <= 0) break;
791 if (size > cch) size = cch;
792 memcpy(pch, wm->info.pchBuffer, size);
793 wm->info.pchNext += size;
800 TRACE("count=%d\n", count);
804 /**************************************************************************
805 * mmioWrite [WINMM.@]
807 LONG WINAPI mmioWrite(HMMIO hmmio, HPCSTR pch, LONG cch)
812 TRACE("(%p, %p, %d);\n", hmmio, pch, cch);
814 if ((wm = MMIO_Get(hmmio)) == NULL)
817 if (wm->info.cchBuffer) {
822 if (wm->info.pchNext != wm->info.pchEndWrite) {
823 count = wm->info.pchEndWrite - wm->info.pchNext;
824 if (count > cch || count < 0) count = cch;
825 memcpy(wm->info.pchNext, pch, count);
826 wm->info.pchNext += count;
830 wm->info.dwFlags |= MMIO_DIRTY;
832 if (wm->info.fccIOProc == FOURCC_MEM) {
833 if (wm->info.adwInfo[0]) {
834 /* from where would we get the memory handle? */
835 FIXME("memory file expansion not implemented!\n");
841 if (wm->info.pchNext == wm->info.pchEndWrite)
843 MMIO_Flush(wm, MMIO_EMPTYBUF);
844 MMIO_GrabNextBuffer(wm, FALSE);
850 count = send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
851 (LPARAM)pch, cch, MMIO_PROC_32A);
852 wm->info.lBufOffset = wm->info.lDiskOffset;
855 TRACE("bytes written=%d\n", count);
859 /**************************************************************************
862 LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
867 TRACE("(%p, %08X, %d);\n", hmmio, lOffset, iOrigin);
869 if ((wm = MMIO_Get(hmmio)) == NULL)
870 return MMSYSERR_INVALHANDLE;
872 /* not buffered, direct seek on file */
873 if (!wm->info.pchBuffer)
874 return send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
875 lOffset, iOrigin, MMIO_PROC_32A);
882 offset = wm->info.lBufOffset + (wm->info.pchNext - wm->info.pchBuffer) + lOffset;
885 offset = ((wm->info.fccIOProc == FOURCC_MEM)? wm->info.cchBuffer : wm->dwFileSize) - lOffset;
891 if (offset && offset >= wm->dwFileSize && wm->info.fccIOProc != FOURCC_MEM) {
892 /* should check that write mode exists */
893 if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
895 wm->info.lBufOffset = offset;
896 wm->info.pchEndRead = wm->info.pchBuffer;
897 wm->info.pchEndWrite = wm->info.pchBuffer + wm->info.cchBuffer;
898 if ((wm->info.dwFlags & MMIO_RWMODE) == MMIO_READ) {
899 wm->info.lDiskOffset = wm->dwFileSize;
901 } else if ((wm->info.cchBuffer > 0) &&
902 ((offset < wm->info.lBufOffset) ||
903 (offset >= wm->info.lBufOffset + wm->info.cchBuffer) ||
904 !wm->bBufferLoaded)) {
905 /* stay in same buffer ? */
906 /* some memory mapped buffers are defined with -1 as a size */
908 /* condition to change buffer */
909 if ((wm->info.fccIOProc == FOURCC_MEM) ||
910 MMIO_Flush(wm, 0) != MMSYSERR_NOERROR ||
911 /* this also sets the wm->info.lDiskOffset field */
912 send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
913 (offset / wm->info.cchBuffer) * wm->info.cchBuffer,
914 SEEK_SET, MMIO_PROC_32A) == -1)
916 MMIO_GrabNextBuffer(wm, TRUE);
919 wm->info.pchNext = wm->info.pchBuffer + (offset - wm->info.lBufOffset);
921 TRACE("=> %d\n", offset);
925 /**************************************************************************
926 * mmioGetInfo [WINMM.@]
928 MMRESULT WINAPI mmioGetInfo(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
932 TRACE("(%p,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
934 if ((wm = MMIO_Get(hmmio)) == NULL)
935 return MMSYSERR_INVALHANDLE;
937 memcpy(lpmmioinfo, &wm->info, sizeof(MMIOINFO));
938 /* don't expose 16 bit ioproc:s */
939 if (wm->ioProc->type != MMIO_PROC_16)
940 lpmmioinfo->pIOProc = wm->ioProc->pIOProc;
942 return MMSYSERR_NOERROR;
945 /**************************************************************************
946 * mmioSetInfo [WINMM.@]
948 MMRESULT WINAPI mmioSetInfo(HMMIO hmmio, const MMIOINFO* lpmmioinfo, UINT uFlags)
952 TRACE("(%p,%p,0x%08x)\n",hmmio,lpmmioinfo,uFlags);
954 if ((wm = MMIO_Get(hmmio)) == NULL)
955 return MMSYSERR_INVALHANDLE;
957 /* check pointers coherence */
958 if (lpmmioinfo->pchNext < wm->info.pchBuffer ||
959 lpmmioinfo->pchNext > wm->info.pchBuffer + wm->info.cchBuffer ||
960 lpmmioinfo->pchEndRead < wm->info.pchBuffer ||
961 lpmmioinfo->pchEndRead > wm->info.pchBuffer + wm->info.cchBuffer ||
962 lpmmioinfo->pchEndWrite < wm->info.pchBuffer ||
963 lpmmioinfo->pchEndWrite > wm->info.pchBuffer + wm->info.cchBuffer)
964 return MMSYSERR_INVALPARAM;
966 wm->info.pchNext = lpmmioinfo->pchNext;
967 wm->info.pchEndRead = lpmmioinfo->pchEndRead;
969 return MMSYSERR_NOERROR;
972 /**************************************************************************
973 * mmioSetBuffer [WINMM.@]
975 MMRESULT WINAPI mmioSetBuffer(HMMIO hmmio, LPSTR pchBuffer, LONG cchBuffer, UINT uFlags)
979 TRACE("(hmmio=%p, pchBuf=%p, cchBuf=%d, uFlags=%#08x)\n",
980 hmmio, pchBuffer, cchBuffer, uFlags);
982 if ((wm = MMIO_Get(hmmio)) == NULL)
983 return MMSYSERR_INVALHANDLE;
985 return MMIO_SetBuffer(wm, pchBuffer, cchBuffer, uFlags);
988 /**************************************************************************
989 * mmioFlush [WINMM.@]
991 MMRESULT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
995 TRACE("(%p, %04X)\n", hmmio, uFlags);
997 if ((wm = MMIO_Get(hmmio)) == NULL)
998 return MMSYSERR_INVALHANDLE;
1000 return MMIO_Flush(wm, uFlags);
1003 /**************************************************************************
1004 * mmioAdvance [WINMM.@]
1006 MMRESULT WINAPI mmioAdvance(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
1010 TRACE("hmmio=%p, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
1012 /* NOTE: mmioAdvance16 heavily relies on parameters from lpmmioinfo we're using
1013 * here. be sure if you change something here to check mmioAdvance16 as well
1015 if ((wm = MMIO_Get(hmmio)) == NULL)
1016 return MMSYSERR_INVALHANDLE;
1018 if (!wm->info.cchBuffer)
1019 return MMIOERR_UNBUFFERED;
1021 if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
1022 return MMSYSERR_INVALPARAM;
1024 if (uFlags == MMIO_WRITE && (lpmmioinfo->dwFlags & MMIO_DIRTY))
1026 send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
1027 lpmmioinfo->lBufOffset, SEEK_SET, MMIO_PROC_32A);
1028 send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
1029 (LPARAM)lpmmioinfo->pchBuffer,
1030 lpmmioinfo->pchNext - lpmmioinfo->pchBuffer, MMIO_PROC_32A);
1031 lpmmioinfo->dwFlags &= ~MMIO_DIRTY;
1033 if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
1034 return MMIOERR_CANNOTWRITE;
1037 wm->dwFileSize = max(wm->dwFileSize, lpmmioinfo->lBufOffset +
1038 (lpmmioinfo->pchNext - lpmmioinfo->pchBuffer));
1040 MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
1043 lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
1044 lpmmioinfo->pchEndRead = lpmmioinfo->pchBuffer +
1045 (wm->info.pchEndRead - wm->info.pchBuffer);
1046 lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
1047 (wm->info.pchEndWrite - wm->info.pchBuffer);
1048 lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
1049 lpmmioinfo->lBufOffset = wm->info.lBufOffset;
1051 return MMSYSERR_NOERROR;
1054 /**************************************************************************
1055 * mmioStringToFOURCCA [WINMM.@]
1057 FOURCC WINAPI mmioStringToFOURCCA(LPCSTR sz, UINT uFlags)
1062 for (i = 0; i < 4 && sz[i]; i++) {
1063 if (uFlags & MMIO_TOUPPER) {
1064 cc[i] = toupper(sz[i]);
1070 /* Pad with spaces */
1071 while (i < 4) cc[i++] = ' ';
1073 TRACE("Got '%.4s'\n",cc);
1074 return mmioFOURCC(cc[0],cc[1],cc[2],cc[3]);
1077 /**************************************************************************
1078 * mmioStringToFOURCCW [WINMM.@]
1080 FOURCC WINAPI mmioStringToFOURCCW(LPCWSTR sz, UINT uFlags)
1084 WideCharToMultiByte( CP_ACP, 0, sz, 4, szA, sizeof(szA), NULL, NULL );
1085 return mmioStringToFOURCCA(szA,uFlags);
1088 /**************************************************************************
1089 * mmioInstallIOProcA [WINMM.@]
1091 LPMMIOPROC WINAPI mmioInstallIOProcA(FOURCC fccIOProc,
1092 LPMMIOPROC pIOProc, DWORD dwFlags)
1094 return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32A);
1097 /**************************************************************************
1098 * mmioInstallIOProcW [WINMM.@]
1100 LPMMIOPROC WINAPI mmioInstallIOProcW(FOURCC fccIOProc,
1101 LPMMIOPROC pIOProc, DWORD dwFlags)
1103 return MMIO_InstallIOProc(fccIOProc, pIOProc, dwFlags, MMIO_PROC_32W);
1106 /******************************************************************
1111 LRESULT MMIO_SendMessage(HMMIO hmmio, UINT uMessage, LPARAM lParam1,
1112 LPARAM lParam2, enum mmioProcType type)
1116 TRACE("(%p, %u, %ld, %ld, %d)\n", hmmio, uMessage, lParam1, lParam2, type);
1118 if (uMessage < MMIOM_USER)
1119 return MMSYSERR_INVALPARAM;
1121 if ((wm = MMIO_Get(hmmio)) == NULL)
1122 return MMSYSERR_INVALHANDLE;
1124 return send_message(wm->ioProc, &wm->info, uMessage, lParam1, lParam2, type);
1127 /**************************************************************************
1128 * mmioSendMessage [WINMM.@]
1130 LRESULT WINAPI mmioSendMessage(HMMIO hmmio, UINT uMessage,
1131 LPARAM lParam1, LPARAM lParam2)
1133 return MMIO_SendMessage(hmmio, uMessage, lParam1, lParam2, MMIO_PROC_32A);
1136 /**************************************************************************
1137 * mmioDescend [WINMM.@]
1139 MMRESULT WINAPI mmioDescend(HMMIO hmmio, LPMMCKINFO lpck,
1140 const MMCKINFO* lpckParent, UINT uFlags)
1146 TRACE("(%p, %p, %p, %04X);\n", hmmio, lpck, lpckParent, uFlags);
1149 return MMSYSERR_INVALPARAM;
1151 dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1152 TRACE("dwOldPos=%d\n", dwOldPos);
1154 if (lpckParent != NULL) {
1155 TRACE("seek inside parent at %d !\n", lpckParent->dwDataOffset);
1156 /* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
1157 if (dwOldPos < lpckParent->dwDataOffset ||
1158 dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
1159 WARN("outside parent chunk\n");
1160 return MMIOERR_CHUNKNOTFOUND;
1164 /* The SDK docu says 'ckid' is used for all cases. Real World
1165 * examples disagree -Marcus,990216.
1171 /* find_chunk looks for 'ckid' */
1172 if (uFlags & MMIO_FINDCHUNK)
1173 srchCkId = lpck->ckid;
1175 /* find_riff and find_list look for 'fccType' */
1176 if (uFlags & MMIO_FINDLIST)
1178 srchCkId = FOURCC_LIST;
1179 srchType = lpck->fccType;
1182 if (uFlags & MMIO_FINDRIFF)
1184 srchCkId = FOURCC_RIFF;
1185 srchType = lpck->fccType;
1188 TRACE("searching for %4.4s.%4.4s\n",
1189 (LPCSTR)&srchCkId, srchType ? (LPCSTR)&srchType : "any");
1195 ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
1196 if (ix < 2*sizeof(DWORD))
1198 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1199 WARN("return ChunkNotFound\n");
1200 return MMIOERR_CHUNKNOTFOUND;
1203 lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
1204 TRACE("ckid=%4.4s fcc=%4.4s cksize=%08X !\n",
1205 (LPCSTR)&lpck->ckid,
1206 srchType ? (LPCSTR)&lpck->fccType:"<na>",
1208 if ( (!srchCkId || (srchCkId == lpck->ckid)) &&
1209 (!srchType || (srchType == lpck->fccType)) )
1212 dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
1213 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1217 /* If we were looking for RIFF/LIST chunks, the final file position
1218 * is after the chunkid. If we were just looking for the chunk
1219 * it is after the cksize. So add 4 in RIFF/LIST case.
1221 if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1222 mmioSeek(hmmio, lpck->dwDataOffset + sizeof(DWORD), SEEK_SET);
1224 mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
1225 TRACE("lpck: ckid=%.4s, cksize=%d, dwDataOffset=%d fccType=%08X (%.4s)!\n",
1226 (LPSTR)&lpck->ckid, lpck->cksize, lpck->dwDataOffset,
1227 lpck->fccType, srchType?(LPSTR)&lpck->fccType:"");
1228 return MMSYSERR_NOERROR;
1231 /**************************************************************************
1232 * mmioAscend [WINMM.@]
1234 MMRESULT WINAPI mmioAscend(HMMIO hmmio, LPMMCKINFO lpck, UINT uFlags)
1236 TRACE("(%p, %p, %04X);\n", hmmio, lpck, uFlags);
1238 if (lpck->dwFlags & MMIO_DIRTY) {
1239 DWORD dwOldPos, dwNewSize;
1241 TRACE("Chunk is dirty, checking if chunk's size is correct\n");
1242 dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1243 TRACE("dwOldPos=%d lpck->dwDataOffset = %d\n", dwOldPos, lpck->dwDataOffset);
1244 dwNewSize = dwOldPos - lpck->dwDataOffset;
1245 if (dwNewSize != lpck->cksize) {
1246 TRACE("Nope: lpck->cksize=%d dwNewSize=%d\n", lpck->cksize, dwNewSize);
1247 lpck->cksize = dwNewSize;
1249 /* pad odd size with 0 */
1250 if (dwNewSize & 1) {
1252 mmioWrite(hmmio, &ch, 1);
1254 mmioSeek(hmmio, lpck->dwDataOffset - sizeof(DWORD), SEEK_SET);
1255 mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
1260 mmioSeek(hmmio, lpck->dwDataOffset + ((lpck->cksize + 1) & ~1), SEEK_SET);
1262 return MMSYSERR_NOERROR;
1265 /**************************************************************************
1266 * mmioCreateChunk [WINMM.@]
1268 MMRESULT WINAPI mmioCreateChunk(HMMIO hmmio, MMCKINFO* lpck, UINT uFlags)
1274 TRACE("(%p, %p, %04X);\n", hmmio, lpck, uFlags);
1276 dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1277 TRACE("dwOldPos=%d\n", dwOldPos);
1279 if (uFlags == MMIO_CREATELIST)
1280 lpck->ckid = FOURCC_LIST;
1281 else if (uFlags == MMIO_CREATERIFF)
1282 lpck->ckid = FOURCC_RIFF;
1284 TRACE("ckid=%.4s\n", (LPSTR)&lpck->ckid);
1286 size = 2 * sizeof(DWORD);
1287 lpck->dwDataOffset = dwOldPos + size;
1289 if (lpck->ckid == FOURCC_RIFF || lpck->ckid == FOURCC_LIST)
1290 size += sizeof(DWORD);
1291 lpck->dwFlags = MMIO_DIRTY;
1293 ix = mmioWrite(hmmio, (LPSTR)lpck, size);
1294 TRACE("after mmioWrite ix = %d req = %d, errno = %d\n", ix, size, errno);
1296 mmioSeek(hmmio, dwOldPos, SEEK_SET);
1297 WARN("return CannotWrite\n");
1298 return MMIOERR_CANNOTWRITE;
1301 return MMSYSERR_NOERROR;
1304 /**************************************************************************
1305 * mmioRenameA [WINMM.@]
1307 MMRESULT WINAPI mmioRenameA(LPCSTR szFileName, LPCSTR szNewFileName,
1308 const MMIOINFO* lpmmioinfo, DWORD dwFlags)
1310 struct IOProcList* ioProc = NULL;
1311 struct IOProcList tmp;
1314 TRACE("('%s', '%s', %p, %08X);\n",
1315 debugstr_a(szFileName), debugstr_a(szNewFileName), lpmmioinfo, dwFlags);
1317 /* If both params are NULL, then parse the file name */
1318 if (lpmmioinfo && lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL)
1320 fcc = MMIO_ParseExtA(szFileName);
1321 if (fcc) ioProc = MMIO_FindProcNode(fcc);
1324 /* Handle any unhandled/error case from above. Assume DOS file */
1325 if (!lpmmioinfo || (lpmmioinfo->fccIOProc == 0 && lpmmioinfo->pIOProc == NULL && ioProc == NULL))
1326 ioProc = MMIO_FindProcNode(FOURCC_DOS);
1327 /* if just the four character code is present, look up IO proc */
1328 else if (lpmmioinfo->pIOProc == NULL)
1329 ioProc = MMIO_FindProcNode(lpmmioinfo->fccIOProc);
1330 else /* use relevant ioProc */
1333 tmp.fourCC = lpmmioinfo->fccIOProc;
1334 tmp.pIOProc = lpmmioinfo->pIOProc;
1335 tmp.type = MMIO_PROC_32A;
1339 /* FIXME: should we actually pass lpmmioinfo down the drain ???
1340 * or make a copy of it because it's const ???
1342 return send_message(ioProc, (MMIOINFO*)lpmmioinfo, MMIOM_RENAME,
1343 (LPARAM)szFileName, (LPARAM)szNewFileName, MMIO_PROC_32A);
1346 /**************************************************************************
1347 * mmioRenameW [WINMM.@]
1349 MMRESULT WINAPI mmioRenameW(LPCWSTR szFileName, LPCWSTR szNewFileName,
1350 const MMIOINFO* lpmmioinfo, DWORD dwFlags)
1354 UINT ret = MMSYSERR_NOMEM;
1359 len = WideCharToMultiByte( CP_ACP, 0, szFileName, -1, NULL, 0, NULL, NULL );
1360 szFn = HeapAlloc( GetProcessHeap(), 0, len );
1361 if (!szFn) goto done;
1362 WideCharToMultiByte( CP_ACP, 0, szFileName, -1, szFn, len, NULL, NULL );
1366 len = WideCharToMultiByte( CP_ACP, 0, szNewFileName, -1, NULL, 0, NULL, NULL );
1367 sznFn = HeapAlloc( GetProcessHeap(), 0, len );
1368 if (!sznFn) goto done;
1369 WideCharToMultiByte( CP_ACP, 0, szNewFileName, -1, sznFn, len, NULL, NULL );
1372 ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwFlags);
1375 HeapFree(GetProcessHeap(),0,szFn);
1376 HeapFree(GetProcessHeap(),0,sznFn);