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source: trunk/src/winmm/mmio.cpp@ 2852

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Last change on this file since 2852 was 2812, checked in by sandervl, 26 years ago
Added new logging feature + fixed waveout query format bug
File size: 30.7 KB

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1	/*
2	* MMIO functions
3	*
4	* Copyright 1999 Przemyslaw Dobrowolski
5	*
6	* Based on Wine code:
7	* Copyright 1998 Andrew Taylor
8	* Copyright 1998 Ove Kåven
9	*
10	*/
11
12	#include <os2win.h>
13	#include <mmsystem.h>
14	#include <odinwrap.h>
15	#include <misc.h>
16	#include <string.h>
17	#include <heapstring.h>
18
19	#include <stdlib.h>
20	#include <errno.h>
21	#include "windef.h"
22	#include "file.h"
23	#include "mmsystem.h"
24	#include "debugtools.h"
25
26	#define DBG_LOCALLOG DBG_mmio
27	#include "dbglocal.h"
28
29	ODINDEBUGCHANNEL(WINMM-MMIO)
30
31	/**************************************************************************
32	* mmioDosIOProc [internal]
33	*/
34	static LRESULT WIN32API mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage, LPARAM lParam1, LPARAM lParam2)
35	{
36	dprintf(("mmioDosIOProc (%p, %X, %ld, %ld);\n", lpmmioinfo, uMessage, lParam1, lParam2));
37
38	switch (uMessage) {
39
40	case MMIOM_OPEN: {
41	/* Parameters:
42	* lParam1 = szFileName parameter from mmioOpen
43	* lParam2 = resrved
44	* NOTE: lDiskOffset automatically set to zero
45	*/
46
47	OFSTRUCT ofs;
48	LPSTR szFileName = (LPSTR) lParam1;
49
50	if (lpmmioinfo->dwFlags & MMIO_GETTEMP) {
51	dprintf(("WINMM: mmioDosIOProc MMIO_GETTEMP not implemented\n"));
52	return MMIOERR_CANNOTOPEN;
53	}
54
55	lpmmioinfo->adwInfo[0] =
56	(DWORD) OpenFile(szFileName, &ofs, lpmmioinfo->dwFlags);
57	if (lpmmioinfo->adwInfo[0] == -1)
58	return MMIOERR_CANNOTOPEN;
59
60	return 0;
61	}
62
63	case MMIOM_CLOSE: {
64	/* Parameters:
65	* lParam1 = wFlags parameter from mmioClose
66	* lParam2 = unused
67	* Returns: zero on success, error code on error
68	*/
69
70	UINT uFlags = (UINT)lParam1;
71
72	if (uFlags & MMIO_FHOPEN)
73	return 0;
74
75	_lclose((HFILE)lpmmioinfo->adwInfo[0]);
76	return 0;
77
78	}
79
80	case MMIOM_READ: {
81	/* Parameters:
82	* lParam1 = huge pointer to read buffer
83	* lParam2 = number of bytes to read
84	* Returns: number of bytes read, 0 for EOF, -1 for error (error code
85	* in wErrorRet)
86	* NOTE: lDiskOffset should be updated
87	*/
88
89	HPSTR pch = (HPSTR) lParam1;
90	LONG cch = (LONG) lParam2;
91	LONG count;
92
93	count = _lread((HFILE)lpmmioinfo->adwInfo[0], pch, cch);
94	if (count != -1)
95	lpmmioinfo->lDiskOffset += count;
96
97	return count;
98	}
99
100	case MMIOM_WRITE:
101	case MMIOM_WRITEFLUSH: {
102	/* no internal buffering, so WRITEFLUSH handled same as WRITE */
103
104	/* Parameters:
105	* lParam1 = huge pointer to write buffer
106	* lParam2 = number of bytes to write
107	* Returns: number of bytes written, -1 for error (error code in
108	* wErrorRet)
109	* NOTE: lDiskOffset should be updated
110	*/
111
112	HPSTR pch = (HPSTR) lParam1;
113	LONG cch = (LONG) lParam2;
114	LONG count;
115
116	count = _hwrite((HFILE)lpmmioinfo->adwInfo[0], pch, cch);
117	if (count != -1)
118	lpmmioinfo->lDiskOffset += count;
119
120	return count;
121	}
122
123	case MMIOM_SEEK: {
124	/* Parameters:
125	* lParam1 = new position
126	* lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
127	* Returns: new file postion, -1 on error
128	* NOTE: lDiskOffset should be updated
129	*/
130
131	LONG Offset = (LONG) lParam1;
132	LONG Whence = (LONG) lParam2;
133	LONG pos;
134
135	pos = _llseek((HFILE)lpmmioinfo->adwInfo[0], Offset, Whence);
136	if (pos != -1)
137	lpmmioinfo->lDiskOffset = pos;
138
139	return pos;
140	}
141
142	case MMIOM_RENAME: {
143	/* Parameters:
144	* lParam1 = old name
145	* lParam2 = new name
146	* Returns: zero on success, non-zero on failure
147	*/
148
149	dprintf(("WINMM: mmioDosIOProc MMIOM_RENAME unimplemented\n"));
150	return MMIOERR_FILENOTFOUND;
151	}
152
153	default:
154	dprintf(("WINMM: mmioDosIOProc unexpected message %u\n", uMessage));
155	return 0;
156	}
157
158	return 0;
159	}
160
161	/**************************************************************************
162	* mmioMemIOProc [internal]
163	*/
164	static LRESULT WIN32API mmioMemIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage, LPARAM lParam1, LPARAM lParam2) {
165	// TRACE("(%p,0x%04x,0x%08lx,0x%08lx)\n",lpmmioinfo,uMessage,lParam1,lParam2);
166	switch (uMessage) {
167
168	case MMIOM_OPEN: {
169	/* Parameters:
170	* lParam1 = filename (must be NULL)
171	* lParam2 = reserved
172	* Returns: zero on success, error code on error
173	* NOTE: lDiskOffset automatically set to zero
174	*/
175
176	if (!(lpmmioinfo->dwFlags & MMIO_CREATE))
177	lpmmioinfo->pchEndRead = lpmmioinfo->pchEndWrite;
178
179	return 0;
180	}
181
182	case MMIOM_CLOSE: {
183	/* Parameters:
184	* lParam1 = wFlags parameter from mmioClose
185	* lParam2 = unused
186	* Returns: zero on success, error code on error
187	*/
188
189	return 0;
190
191	}
192
193	case MMIOM_READ: {
194	/* Parameters:
195	* lParam1 = huge pointer to read buffer
196	* lParam2 = number of bytes to read
197	* Returns: number of bytes read, 0 for EOF, -1 for error (error code
198	* in wErrorRet)
199	* NOTE: lDiskOffset should be updated
200	*/
201
202	/* HPSTR pch = (HPSTR) lParam1; */
203	/* LONG cch = (LONG) lParam2; */
204
205	dprintf(("WINMM (mmioMemIOProc) MMIOM_READ on memory files should not occur, buffer may be lost!\n"));
206	return 0;
207	}
208
209	case MMIOM_WRITE:
210	case MMIOM_WRITEFLUSH: {
211	/* no internal buffering, so WRITEFLUSH handled same as WRITE */
212
213	/* Parameters:
214	* lParam1 = huge pointer to write buffer
215	* lParam2 = number of bytes to write
216	* Returns: number of bytes written, -1 for error (error code in
217	* wErrorRet)
218	* NOTE: lDiskOffset should be updated
219	*/
220
221	/* HPSTR pch = (HPSTR) lParam1; */
222	/* LONG cch = (LONG) lParam2; */
223
224	dprintf(("WINMM (mmioMemIOProc) MMIOM_WRITE on memory files should not occur, buffer may be lost!\n"));
225	return 0;
226	}
227
228	case MMIOM_SEEK: {
229	/* Parameters:
230	* lParam1 = new position
231	* lParam2 = from whence to seek (SEEK_SET, SEEK_CUR, SEEK_END)
232	* Returns: new file postion, -1 on error
233	* NOTE: lDiskOffset should be updated
234	*/
235
236	/* LONG Offset = (LONG) lParam1; */
237	/* LONG Whence = (LONG) lParam2; */
238
239	dprintf(("WINMM (mmioMemIOProc) MMIOM_SEEK on memory files should not occur, buffer may be lost!\n"));
240	return -1;
241	}
242
243	default:
244	dprintf(("WINMM (mmioMemIOProc) unexpected message %u\n", uMessage));
245	return 0;
246	}
247
248	return 0;
249	}
250
251	/**************************************************************************
252	* MMIO_Open [internal]
253	*/
254	static HMMIO MMIO_Open(LPSTR szFileName, LPMMIOINFO refmminfo, DWORD dwOpenFlags)
255	{
256	LPMMIOINFO lpmminfo;
257	HMMIO hmmio;
258
259	// TRACE("('%s', %08lX);\n", szFileName, dwOpenFlags);
260
261	if (dwOpenFlags & MMIO_PARSE) {
262	char buffer[MAX_PATH];
263
264	if (GetFullPathNameA(szFileName, sizeof(buffer), buffer, NULL) >= sizeof(buffer))
265	return (HMMIO)FALSE;
266	strcpy(szFileName, buffer);
267	return (HMMIO)TRUE;
268	}
269
270	hmmio = GlobalAlloc(GHND, sizeof(MMIOINFO));
271	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
272	if (lpmminfo == NULL)
273	return 0;
274	memset(lpmminfo, 0, sizeof(MMIOINFO));
275
276	/* assume DOS file if not otherwise specified */
277	if (refmminfo->fccIOProc == 0 && refmminfo->pIOProc == NULL) {
278	lpmminfo->fccIOProc = FOURCC_DOS;
279	lpmminfo->pIOProc = (LPMMIOPROC) mmioDosIOProc;
280	}
281	/* if just the four character code is present, look up IO proc */
282	else if (refmminfo->pIOProc == NULL) {
283
284	lpmminfo->fccIOProc = refmminfo->fccIOProc;
285	lpmminfo->pIOProc = mmioInstallIOProcA(refmminfo->fccIOProc, NULL, MMIO_FINDPROC);
286
287	}
288	/* if IO proc specified, use it and specified four character code */
289	else {
290
291	lpmminfo->fccIOProc = refmminfo->fccIOProc;
292	lpmminfo->pIOProc = (LPMMIOPROC)refmminfo->pIOProc;
293	}
294
295	if (dwOpenFlags & MMIO_ALLOCBUF) {
296	if ((refmminfo->wErrorRet = mmioSetBuffer(hmmio, NULL, MMIO_DEFAULTBUFFER, 0))) {
297	return 0;
298	}
299	} else if (lpmminfo->fccIOProc == FOURCC_MEM) {
300	if ((refmminfo->wErrorRet = mmioSetBuffer(hmmio, refmminfo->pchBuffer, refmminfo->cchBuffer, 0))) {
301	return 0;
302	}
303	}
304
305	/* see mmioDosIOProc for that one */
306	lpmminfo->adwInfo[0] = refmminfo->adwInfo[0];
307	lpmminfo->dwFlags = dwOpenFlags;
308	lpmminfo->hmmio = hmmio;
309
310	/* call IO proc to actually open file */
311	refmminfo->wErrorRet = (UINT) mmioSendMessage(hmmio, MMIOM_OPEN, (LPARAM) szFileName, (LPARAM) 0);
312
313	GlobalUnlock(hmmio);
314
315	if (refmminfo->wErrorRet != 0) {
316	GlobalFree(hmmio);
317	return 0;
318	}
319
320	return hmmio;
321	}
322
323	/**************************************************************************
324	* mmioOpenW [WINMM.123]
325	*/
326	ODINFUNCTION3(HMMIO, mmioOpenW,
327	LPWSTR,szFileName,
328	LPMMIOINFO,lpmmioinfo,
329	DWORD,dwOpenFlags)
330	{
331	LPSTR szFn = HEAP_strdupWtoA(GetProcessHeap(),0,szFileName);
332	HMMIO ret = mmioOpenA(szFn, lpmmioinfo, dwOpenFlags);
333
334	HeapFree(GetProcessHeap(),0,szFn);
335	return ret;
336	}
337
338	/**************************************************************************
339	* mmioOpenA [WINMM.122]
340	*/
341	ODINFUNCTION3(HMMIO, mmioOpenA,
342	LPSTR,szFileName,
343	LPMMIOINFO,lpmmioinfo,
344	DWORD,dwOpenFlags)
345	{
346	HMMIO ret;
347
348	if (lpmmioinfo) {
349	ret = MMIO_Open(szFileName, lpmmioinfo, dwOpenFlags);
350	} else {
351	MMIOINFO mmioinfo;
352
353	mmioinfo.fccIOProc = 0;
354	mmioinfo.pIOProc = NULL;
355	mmioinfo.pchBuffer = NULL;
356	mmioinfo.cchBuffer = 0;
357
358	ret = MMIO_Open(szFileName, &mmioinfo, dwOpenFlags);
359	}
360	return ret;
361	}
362
363
364	/**************************************************************************
365	* mmioClose [WINMM.114]
366	*/
367	ODINFUNCTION2(MMRESULT, mmioClose,
368	HMMIO,hmmio,
369	UINT,uFlags)
370	{
371	LPMMIOINFO lpmminfo;
372	MMRESULT result;
373
374	// TRACE("(%04X, %04X);\n", hmmio, uFlags);
375
376	lpmminfo = (LPMMIOINFO) GlobalLock(hmmio);
377	if (lpmminfo == NULL)
378	return 0;
379
380	/* flush the file - if error reported, ignore */
381	if (mmioFlush(hmmio, MMIO_EMPTYBUF) != 0)
382	lpmminfo->dwFlags &= ~MMIO_DIRTY;
383
384	result = mmioSendMessage(hmmio,MMIOM_CLOSE,(LPARAM)uFlags,(LPARAM)0);
385
386	mmioSetBuffer(hmmio, NULL, 0, 0);
387
388	GlobalUnlock(hmmio);
389	GlobalFree(hmmio);
390
391	return result;
392	}
393
394
395
396	/**************************************************************************
397	* mmioRead [WINMM.124]
398	*/
399	ODINFUNCTION3(LONG, mmioRead,
400	HMMIO,hmmio,
401	HPSTR,pch,
402	LONG,cch)
403	{
404	LONG count;
405	LPMMIOINFO lpmminfo;
406
407	// TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
408
409	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
410	if (lpmminfo == NULL)
411	return -1;
412
413	if (lpmminfo->pchNext != lpmminfo->pchEndRead) {
414	count = lpmminfo->pchEndRead - lpmminfo->pchNext;
415	if (count > cch \|\| count < 0) count = cch;
416	memcpy(pch, lpmminfo->pchNext, count);
417	lpmminfo->pchNext += count;
418	pch += count;
419	cch -= count;
420	} else
421	count = 0;
422
423	if (cch&&(lpmminfo->fccIOProc!=FOURCC_MEM)) {
424	if (lpmminfo->cchBuffer) {
425	mmioFlush(hmmio, MMIO_EMPTYBUF);
426
427	while (cch) {
428	LONG size;
429	lpmminfo->lBufOffset = lpmminfo->lDiskOffset;
430	lpmminfo->pchNext = lpmminfo->pchBuffer;
431	lpmminfo->pchEndRead = lpmminfo->pchBuffer;
432	size = mmioSendMessage(hmmio, MMIOM_READ,
433	(LPARAM) lpmminfo->pchBuffer,
434	(LPARAM) lpmminfo->cchBuffer);
435	if (size<=0) break;
436	lpmminfo->pchEndRead = lpmminfo->pchBuffer + size;
437	if (size > cch) size = cch;
438	memcpy(pch, lpmminfo->pchNext, size);
439	lpmminfo->pchNext += size;
440	pch += size;
441	cch -= size;
442	count += size;
443	}
444	} else {
445	count += mmioSendMessage(hmmio, MMIOM_READ, (LPARAM) pch, (LPARAM) cch);
446	if (count>0) lpmminfo->lBufOffset += count;
447	}
448	}
449
450	GlobalUnlock(hmmio);
451	TRACE("count=%ld\n", count);
452	return count;
453	}
454
455	/**************************************************************************
456	* mmioWrite [WINMM.133]
457	*/
458	ODINFUNCTION3(LONG, mmioWrite,
459	HMMIO,hmmio,
460	HPCSTR,pch,
461	LONG,cch)
462	{
463	LONG count;
464	LPMMIOINFO lpmminfo;
465
466	// TRACE("(%04X, %p, %ld);\n", hmmio, pch, cch);
467
468	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
469	if (lpmminfo == NULL)
470	return -1;
471
472	if (lpmminfo->cchBuffer) {
473	count = 0;
474	while (cch) {
475	if (lpmminfo->pchNext != lpmminfo->pchEndWrite) {
476	count = lpmminfo->pchEndWrite - lpmminfo->pchNext;
477	if (count > cch \|\| count < 0) count = cch;
478	memcpy(lpmminfo->pchNext, pch, count);
479	lpmminfo->pchNext += count;
480	pch += count;
481	cch -= count;
482	lpmminfo->dwFlags \|= MMIO_DIRTY;
483	} else
484	if (lpmminfo->fccIOProc==FOURCC_MEM) {
485	if (lpmminfo->adwInfo[0]) {
486	/* from where would we get the memory handle? */
487	dprintf(("WINMM (mmioWrite) memory file expansion not implemented!\n"));
488	} else break;
489	}
490
491	if (lpmminfo->pchNext == lpmminfo->pchEndWrite
492	&& mmioFlush(hmmio, MMIO_EMPTYBUF)) break;
493	}
494	} else {
495	count = mmioSendMessage(hmmio, MMIOM_WRITE, (LPARAM) pch, (LPARAM) cch);
496	lpmminfo->lBufOffset = lpmminfo->lDiskOffset;
497	}
498
499	GlobalUnlock(hmmio);
500	// TRACE("count=%ld\n", count);
501	return count;
502	}
503
504	/**************************************************************************
505	* mmioSeek [MMSYSTEM.1214]
506	*/
507	ODINFUNCTION3(LONG, mmioSeek,
508	HMMIO, hmmio,
509	LONG,lOffset,
510	INT,iOrigin)
511	{
512	int offset;
513	LPMMIOINFO lpmminfo;
514
515	// TRACE("(%04X, %08lX, %d);\n", hmmio, lOffset, iOrigin);
516
517	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
518	if (lpmminfo == NULL)
519	return -1;
520
521	offset = (iOrigin==SEEK_SET)?(lOffset - lpmminfo->lBufOffset):
522	(iOrigin==SEEK_CUR)?(lOffset +
523	(lpmminfo->pchNext - lpmminfo->pchBuffer)):-1;
524
525	if ((lpmminfo->cchBuffer<0)\|\|
526	((offset>=0)&&(offset<=(lpmminfo->pchEndRead-lpmminfo->pchBuffer)))) {
527	lpmminfo->pchNext = lpmminfo->pchBuffer + offset;
528	GlobalUnlock(hmmio);
529	return lpmminfo->lBufOffset + offset;
530	}
531
532	if ((lpmminfo->fccIOProc==FOURCC_MEM)\|\|mmioFlush(hmmio, MMIO_EMPTYBUF)) {
533	GlobalUnlock(hmmio);
534	return -1;
535	}
536
537	offset = mmioSendMessage(hmmio, MMIOM_SEEK, (LPARAM) lOffset, (LPARAM) iOrigin);
538	lpmminfo->lBufOffset = lpmminfo->lDiskOffset;
539
540	GlobalUnlock(hmmio);
541	return offset;
542	}
543
544	/**************************************************************************
545	* mmioGetInfo [MMSYSTEM.1215]
546	*/
547	ODINFUNCTION3(UINT, mmioGetInfo,
548	HMMIO,hmmio,
549	LPMMIOINFO,lpmmioinfo,
550	UINT,uFlags)
551	{
552	LPMMIOINFO lpmminfo;
553	// TRACE("mmioGetInfo\n");
554	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
555	if (lpmminfo == NULL) return 0;
556	memcpy(lpmmioinfo, lpmminfo, sizeof(MMIOINFO));
557	GlobalUnlock(hmmio);
558	return 0;
559	}
560
561
562	/**************************************************************************
563	* mmioSetInfo [WINMM.130]
564	*/
565	ODINFUNCTION3(MMRESULT,mmioSetInfo,
566	HMMIO, hmmio,
567	const MMIOINFO*,lpmmioinfo,
568	UINT,uFlags)
569	{
570	LPMMIOINFO lpmminfo;
571	// TRACE("mmioSetInfo\n");
572	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
573	if (lpmminfo == NULL) return 0;
574	lpmminfo->pchNext = lpmmioinfo->pchNext;
575	lpmminfo->pchEndRead = lpmmioinfo->pchEndRead;
576	GlobalUnlock(hmmio);
577	return 0;
578	}
579
580	/**************************************************************************
581	* mmioSetBuffer [WINMM.129]
582	*/
583	ODINFUNCTION4(UINT,mmioSetBuffer,
584	HMMIO,hmmio,
585	LPSTR,pchBuffer,
586	LONG,cchBuffer,
587	UINT,uFlags)
588	{
589	LPMMIOINFO lpmminfo;
590
591	if (mmioFlush(hmmio, MMIO_EMPTYBUF) != 0)
592	return MMIOERR_CANNOTWRITE;
593
594	// TRACE("(hmmio=%04x, pchBuf=%p, cchBuf=%ld, uFlags=%#08x)\n",
595	// hmmio, pchBuffer, cchBuffer, uFlags);
596
597	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
598	if (lpmminfo == NULL) return 0;
599	if ((!cchBuffer \|\| pchBuffer) && lpmminfo->dwFlags&MMIO_ALLOCBUF) {
600	GlobalUnlock(lpmminfo->dwReserved1);
601	GlobalFree(lpmminfo->dwReserved1);
602	lpmminfo->dwFlags &= ~MMIO_ALLOCBUF;
603	}
604	if (pchBuffer) {
605	lpmminfo->pchBuffer = pchBuffer;
606	} else if (lpmminfo->dwFlags&MMIO_ALLOCBUF) {
607	HGLOBAL hNewBuf;
608	GlobalUnlock(lpmminfo->dwReserved1);
609	hNewBuf = GlobalReAlloc(lpmminfo->dwReserved1, cchBuffer, 0);
610	if (!hNewBuf) {
611	/* FIXME: this assumes the memory block didn't move */
612	GlobalLock(lpmminfo->dwReserved1);
613	GlobalUnlock(hmmio);
614	return MMIOERR_OUTOFMEMORY;
615	}
616	lpmminfo->dwReserved1 = hNewBuf;
617	lpmminfo->pchBuffer = (LPSTR)GlobalLock(hNewBuf);
618	} else if (cchBuffer) {
619	HGLOBAL hNewBuf = GlobalAlloc(GMEM_MOVEABLE, cchBuffer);
620	if (!hNewBuf) {
621	GlobalUnlock(hmmio);
622	return MMIOERR_OUTOFMEMORY;
623	}
624	lpmminfo->dwReserved1 = hNewBuf;
625	lpmminfo->pchBuffer = (LPSTR)GlobalLock(hNewBuf);
626	lpmminfo->dwFlags \|= MMIO_ALLOCBUF;
627	} else
628	lpmminfo->pchBuffer = NULL;
629	lpmminfo->cchBuffer = cchBuffer;
630	lpmminfo->pchNext = lpmminfo->pchBuffer;
631	lpmminfo->pchEndRead = lpmminfo->pchBuffer;
632	lpmminfo->pchEndWrite = lpmminfo->pchBuffer + cchBuffer;
633	lpmminfo->lBufOffset = 0;
634
635	GlobalUnlock(hmmio);
636	return 0;
637	}
638
639	/**************************************************************************
640	* mmioFlush [WINMM.117]
641	*/
642	ODINFUNCTION2(UINT,mmioFlush,
643	HMMIO,hmmio,
644	UINT,uFlags)
645	{
646	LPMMIOINFO lpmminfo;
647	// TRACE("(%04X, %04X)\n", hmmio, uFlags);
648	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
649	if (lpmminfo == NULL) return 0;
650
651	if ((!lpmminfo->cchBuffer)\|\|(lpmminfo->fccIOProc==FOURCC_MEM)) {
652	GlobalUnlock(hmmio);
653	return 0;
654	}
655	/* not quite sure what to do here, but I'll guess */
656	if (lpmminfo->dwFlags & MMIO_DIRTY) {
657	mmioSendMessage(hmmio, MMIOM_SEEK,
658	(LPARAM) lpmminfo->lBufOffset,
659	(LPARAM) SEEK_SET);
660	mmioSendMessage(hmmio, MMIOM_WRITE,
661	(LPARAM) lpmminfo->pchBuffer,
662	(LPARAM) (lpmminfo->pchNext - lpmminfo->pchBuffer) );
663	lpmminfo->dwFlags &= ~MMIO_DIRTY;
664	}
665	if (uFlags & MMIO_EMPTYBUF) {
666	/* seems Windows doesn't do any seeking here, hopefully this
667	won't matter, otherwise a slight rewrite is necessary */
668	mmioSendMessage(hmmio, MMIOM_SEEK,
669	(LPARAM) (lpmminfo->lBufOffset +
670	(lpmminfo->pchNext - lpmminfo->pchBuffer)),
671	(LPARAM) SEEK_SET);
672	lpmminfo->pchNext = lpmminfo->pchBuffer;
673	lpmminfo->pchEndRead = lpmminfo->pchBuffer;
674	lpmminfo->lBufOffset = lpmminfo->lDiskOffset;
675	}
676
677	GlobalUnlock(hmmio);
678	return 0;
679	}
680
681
682	/**************************************************************************
683	* mmioAdvance [WINMM.113]
684	*/
685	ODINFUNCTION3(UINT,mmioAdvance,
686	HMMIO, hmmio,
687	LPMMIOINFO,lpmmioinfo,
688	UINT,uFlags)
689	{
690	LPMMIOINFO lpmminfo;
691	// TRACE("mmioAdvance\n");
692	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
693	if (lpmminfo == NULL) return 0;
694	if (!lpmminfo->cchBuffer) {
695	GlobalUnlock(hmmio);
696	return MMIOERR_UNBUFFERED;
697	}
698	lpmminfo->pchNext = lpmmioinfo->pchNext;
699	if (mmioFlush(hmmio, MMIO_EMPTYBUF)) {
700	GlobalUnlock(hmmio);
701	return MMIOERR_CANNOTWRITE;
702	}
703	if (uFlags == MMIO_READ)
704	lpmmioinfo->pchEndRead = lpmmioinfo->pchBuffer +
705	mmioSendMessage(hmmio, MMIOM_READ,
706	(LPARAM) lpmmioinfo->pchBuffer,
707	(LPARAM) lpmmioinfo->cchBuffer);
708	lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
709	GlobalUnlock(hmmio);
710	return 0;
711	}
712
713
714	/**************************************************************************
715	* mmioStringToFOURCCA [WINMM.131]
716	*/
717	ODINFUNCTION2(FOURCC,mmioStringToFOURCCA,
718	LPCSTR, sz, UINT, uFlags)
719	{
720	return mmioFOURCC(sz[0],sz[1],sz[2],sz[3]);
721	}
722
723	/**************************************************************************
724	* mmioStringToFOURCCW [WINMM.132]
725	*/
726	ODINFUNCTION2(FOURCC,mmioStringToFOURCCW,
727	LPCWSTR, sz, UINT, uFlags)
728	{
729	LPSTR szA = HEAP_strdupWtoA(GetProcessHeap(),0,sz);
730	FOURCC ret = mmioStringToFOURCCA(szA,uFlags);
731
732	HeapFree(GetProcessHeap(),0,szA);
733	return ret;
734	}
735
736
737	/* maximum number of I/O procedures which can be installed */
738
739	struct IOProcList
740	{
741	struct IOProcList pNext; / Next item in linked list */
742	FOURCC fourCC; /* four-character code identifying IOProc */
743	LPMMIOPROC pIOProc; /* pointer to IProc */
744	};
745
746	/* This array will be the entire list for most apps */
747
748	static struct IOProcList defaultProcs[] = {
749	{ &defaultProcs[1], (FOURCC) FOURCC_DOS,(LPMMIOPROC) mmioDosIOProc },
750	{ NULL, (FOURCC) FOURCC_MEM,(LPMMIOPROC) mmioMemIOProc },
751	};
752
753	static struct IOProcList *pIOProcListAnchor = &defaultProcs[0];
754
755	ODINFUNCTION3(LPMMIOPROC, mmioInstallIOProcA,
756	FOURCC,fccIOProc,
757	LPMMIOPROC,pIOProc,
758	DWORD,dwFlags)
759	{
760	LPMMIOPROC lpProc = NULL;
761	struct IOProcList *pListNode;
762
763	// TRACE("(%ld, %p, %08lX)\n",
764	// fccIOProc, pIOProc, dwFlags);
765
766	if (dwFlags & MMIO_GLOBALPROC) {
767	dprintf(("WINMM: mmioInstallIOProcA global procedures not implemented\n"));
768	}
769
770	/* just handle the known procedures for now */
771	switch(dwFlags & (MMIO_INSTALLPROC\|MMIO_REMOVEPROC\|MMIO_FINDPROC)) {
772	case MMIO_INSTALLPROC:
773	/* Create new entry for the IOProc list */
774	pListNode = (struct IOProcList )HeapAlloc(GetProcessHeap(),0,sizeof(pListNode));
775	if (pListNode)
776	{
777	/* Find the end of the list, so we can add our new entry to it */
778	struct IOProcList *pListEnd = pIOProcListAnchor;
779	while (pListEnd->pNext)
780	pListEnd = pListEnd->pNext;
781
782	/* Fill in this node */
783	pListNode->fourCC = fccIOProc;
784	pListNode->pIOProc = pIOProc;
785
786	/* Stick it on the end of the list */
787	pListEnd->pNext = pListNode;
788	pListNode->pNext = NULL;
789
790	/* Return this IOProc - that's how the caller knows we succeeded */
791	lpProc = pIOProc;
792	};
793	break;
794
795	case MMIO_REMOVEPROC:
796	/*
797	* Search for the node that we're trying to remove - note
798	* that this method won't find the first item on the list, but
799	* since the first two items on this list are ones we won't
800	* let the user delete anyway, that's okay
801	*/
802
803	pListNode = pIOProcListAnchor;
804	while (pListNode && pListNode->pNext->fourCC != fccIOProc)
805	pListNode = pListNode->pNext;
806
807	/* If we found it, remove it, but only if it isn't builtin */
808	if (pListNode &&
809	((pListNode >= defaultProcs) && (pListNode < defaultProcs + sizeof(defaultProcs))))
810	{
811	/* Okay, nuke it */
812	pListNode->pNext = pListNode->pNext->pNext;
813	HeapFree(GetProcessHeap(),0,pListNode);
814	};
815	break;
816
817	case MMIO_FINDPROC:
818	/* Iterate through the list looking for this proc identified by fourCC */
819	for (pListNode = pIOProcListAnchor; pListNode; pListNode=pListNode->pNext)
820	{
821	if (pListNode->fourCC == fccIOProc)
822	{
823	lpProc = pListNode->pIOProc;
824	break;
825	};
826	};
827	break;
828	}
829
830	return lpProc;
831	}
832
833
834	/**************************************************************************
835	* mmioSendMessage [MMSYSTEM.1222]
836	*/
837	ODINFUNCTION4(LRESULT,mmioSendMessage,
838	HMMIO,hmmio,
839	UINT,uMessage,
840	LPARAM,lParam1,
841	LPARAM,lParam2)
842	{
843	LPMMIOINFO lpmminfo;
844	LRESULT result;
845	const char *msg = NULL;
846
847	#ifdef DEBUG
848	switch (uMessage) {
849	#define msgname(x) case x: msg = #x; break;
850	msgname(MMIOM_OPEN);
851	msgname(MMIOM_CLOSE);
852	msgname(MMIOM_READ);
853	msgname(MMIOM_WRITE);
854	msgname(MMIOM_WRITEFLUSH);
855	msgname(MMIOM_SEEK);
856	msgname(MMIOM_RENAME);
857	#undef msgname
858	}
859	#endif
860
861	if (msg)
862	dprintf(("WINMM: mmioSendMessage (%04X, %s, %ld, %ld)\n",
863	hmmio, msg, lParam1, lParam2));
864	else
865	dprintf(("WINMM: mmioSendMessage (%04X, %u, %ld, %ld)\n",
866	hmmio, uMessage, lParam1, lParam2));
867
868	lpmminfo = (LPMMIOINFO)GlobalLock(hmmio);
869
870	if (lpmminfo && lpmminfo->pIOProc)
871	result = (*lpmminfo->pIOProc)((LPSTR)lpmminfo, (UINT)uMessage, lParam1, lParam2);
872	else
873	result = MMSYSERR_INVALPARAM;
874
875	GlobalUnlock(hmmio);
876
877	return result;
878	}
879
880	/**************************************************************************
881	* mmioDescend [MMSYSTEM.1223]
882	*/
883	ODINFUNCTION4(UINT,mmioDescend,
884	HMMIO,hmmio,
885	LPMMCKINFO,lpck,
886	const MMCKINFO *,lpckParent,
887	UINT,uFlags)
888	{
889	DWORD dwOldPos;
890	FOURCC srchCkId;
891	FOURCC srchType;
892
893
894	// TRACE("(%04X, %p, %p, %04X);\n", hmmio, lpck, lpckParent, uFlags);
895
896	if (lpck == NULL)
897	return MMSYSERR_INVALPARAM;
898
899	dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
900	dprintf(("WINMM: mmioDescend - dwOldPos=%ld\n", dwOldPos));
901
902	if (lpckParent != NULL) {
903	TRACE("seek inside parent at %ld !\n", lpckParent->dwDataOffset);
904	/* EPP: was dwOldPos = mmioSeek(hmmio,lpckParent->dwDataOffset,SEEK_SET); */
905	if (dwOldPos < lpckParent->dwDataOffset \|\| dwOldPos >= lpckParent->dwDataOffset + lpckParent->cksize) {
906	dprintf(("WINMM: mmioDescend - outside parent chunk\n"));
907	return MMIOERR_CHUNKNOTFOUND;
908	}
909	}
910
911	/* The SDK docu says 'ckid' is used for all cases. Real World
912	* examples disagree -Marcus,990216.
913	*/
914
915	srchType = 0;
916	/* find_chunk looks for 'ckid' */
917	if (uFlags & MMIO_FINDCHUNK)
918	srchCkId = lpck->ckid;
919	/* find_riff and find_list look for 'fccType' */
920	if (uFlags & MMIO_FINDLIST) {
921	srchCkId = FOURCC_LIST;
922	srchType = lpck->fccType;
923	}
924	if (uFlags & MMIO_FINDRIFF) {
925	srchCkId = FOURCC_RIFF;
926	srchType = lpck->fccType;
927	}
928	dprintf(("WINMM: mmioDescend - searching for %.4s.%.4s\n",
929	(LPSTR)&srchCkId,
930	srchType?(LPSTR)&srchType:"<any>"));
931
932	if (uFlags & (MMIO_FINDCHUNK\|MMIO_FINDLIST\|MMIO_FINDRIFF)) {
933	while (TRUE) {
934	LONG ix;
935
936	ix = mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD));
937	if (ix < 2*sizeof(DWORD)) {
938	mmioSeek(hmmio, dwOldPos, SEEK_SET);
939	WARN("return ChunkNotFound\n");
940	return MMIOERR_CHUNKNOTFOUND;
941	}
942	lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
943	if (ix < lpck->dwDataOffset - dwOldPos) {
944	mmioSeek(hmmio, dwOldPos, SEEK_SET);
945	WARN("return ChunkNotFound\n");
946	return MMIOERR_CHUNKNOTFOUND;
947	}
948	dprintf(("WINMM: mmioDescend - ckid=%.4ss fcc=%.4ss cksize=%08lX !\n",
949	(LPSTR)&lpck->ckid,
950	srchType?(LPSTR)&lpck->fccType:"<unused>",
951	lpck->cksize));
952	if ((srchCkId == lpck->ckid) &&
953	(!srchType \|\| (srchType == lpck->fccType))
954	)
955	break;
956
957	dwOldPos = lpck->dwDataOffset + ((lpck->cksize + 1) & ~1);
958	mmioSeek(hmmio, dwOldPos, SEEK_SET);
959	}
960	} else {
961	/* FIXME: unverified, does it do this? */
962	if (mmioRead(hmmio, (LPSTR)lpck, 3 * sizeof(DWORD)) < 3 * sizeof(DWORD)) {
963	mmioSeek(hmmio, dwOldPos, SEEK_SET);
964	dprintf(("WINMM: mmioDescend - return ChunkNotFound 2nd\n"));
965	return MMIOERR_CHUNKNOTFOUND;
966	}
967	lpck->dwDataOffset = dwOldPos + 2 * sizeof(DWORD);
968	}
969	lpck->dwFlags = 0;
970	/* If we were looking for RIFF/LIST chunks, the final file position
971	* is after the chunkid. If we were just looking for the chunk
972	* it is after the cksize. So add 4 in RIFF/LIST case.
973	*/
974	if (lpck->ckid == FOURCC_RIFF \|\| lpck->ckid == FOURCC_LIST)
975	mmioSeek(hmmio, lpck->dwDataOffset + sizeof(DWORD), SEEK_SET);
976	else
977	mmioSeek(hmmio, lpck->dwDataOffset, SEEK_SET);
978	dprintf(("WINMM: mmioDescend - lpck: ckid=%.4s, cksize=%ld, dwDataOffset=%ld fccType=%08lX (%.4s)!\n",
979	(LPSTR)&lpck->ckid, lpck->cksize, lpck->dwDataOffset,
980	lpck->fccType, srchType?(LPSTR)&lpck->fccType:""));
981	return 0;
982	}
983
984	/**************************************************************************
985	* mmioAscend [WINMM.113]
986	*/
987	ODINFUNCTION3(UINT,mmioAscend,
988	HMMIO,hmmio,
989	LPMMCKINFO,lpck,
990	UINT,uFlags)
991	{
992	// TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
993
994	if (lpck->dwFlags & MMIO_DIRTY) {
995	DWORD dwOldPos, dwNewSize, dwSizePos;
996
997	dprintf(("WINMM: mmioAscend - chunk is marked MMIO_DIRTY, correcting chunk size\n"));
998	dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
999	dprintf(("WINMM: mmioAscend - dwOldPos=%ld\n", dwOldPos));
1000	dwNewSize = dwOldPos - lpck->dwDataOffset;
1001	if (dwNewSize != lpck->cksize) {
1002	TRACE("dwNewSize=%ld\n", dwNewSize);
1003	lpck->cksize = dwNewSize;
1004
1005	dwSizePos = lpck->dwDataOffset - sizeof(DWORD);
1006	dprintf(("WINMM: mmioAscend - dwSizePos=%ld\n", dwSizePos));
1007
1008	mmioSeek(hmmio, dwSizePos, SEEK_SET);
1009	mmioWrite(hmmio, (LPSTR)&dwNewSize, sizeof(DWORD));
1010	}
1011	}
1012
1013	mmioSeek(hmmio, lpck->dwDataOffset + ((lpck->cksize + 1) & ~1), SEEK_SET);
1014
1015	return 0;
1016	}
1017
1018	/**************************************************************************
1019	* mmioCreateChunk [WINMM.115]
1020	*/
1021	ODINFUNCTION3(UINT,mmioCreateChunk,
1022	HMMIO,hmmio,
1023	LPMMCKINFO,lpck,
1024	UINT,uFlags)
1025	{
1026	DWORD dwOldPos;
1027	LONG size;
1028	LONG ix;
1029
1030	// TRACE("(%04X, %p, %04X);\n", hmmio, lpck, uFlags);
1031
1032	dwOldPos = mmioSeek(hmmio, 0, SEEK_CUR);
1033	dprintf(("WINMM: mmioCreateChunk - dwOldPos=%ld\n", dwOldPos));
1034
1035	if (uFlags == MMIO_CREATELIST)
1036	lpck->ckid = FOURCC_LIST;
1037	else if (uFlags == MMIO_CREATERIFF)
1038	lpck->ckid = FOURCC_RIFF;
1039
1040	dprintf(("WINMM: mmioCreateChunk - ckid=%08lX\n", lpck->ckid));
1041
1042	size = 2 * sizeof(DWORD);
1043	lpck->dwDataOffset = dwOldPos + size;
1044
1045	if (lpck->ckid == FOURCC_RIFF \|\| lpck->ckid == FOURCC_LIST)
1046	size += sizeof(DWORD);
1047	lpck->dwFlags = MMIO_DIRTY;
1048
1049	ix = mmioWrite(hmmio, (LPSTR)lpck, size);
1050	TRACE("after mmioWrite ix = %ld req = %ld, errno = %d\n",ix, size, errno);
1051	if (ix < size) {
1052	mmioSeek(hmmio, dwOldPos, SEEK_SET);
1053	dprintf(("WINMM: mmioCreateChunk - return CannotWrite\n"));
1054	return MMIOERR_CANNOTWRITE;
1055	}
1056
1057	return 0;
1058	}
1059
1060	/**************************************************************************
1061	* mmioRenameA [WINMM.125]
1062	*/
1063	ODINFUNCTION4(UINT,mmioRenameA,
1064	LPCSTR,szFileName,
1065	LPCSTR,szNewFileName,
1066	LPMMIOINFO,lpmmioinfo,
1067	DWORD,dwRenameFlags)
1068	{
1069	UINT result;
1070	LPMMIOINFO lpmminfo;
1071	HMMIO hmmio;
1072
1073	// TRACE("('%s', '%s', %p, %08lX);\n",
1074	// szFileName, szNewFileName, lpmmioinfo, dwRenameFlags);
1075	dprintf(("WINMM: This may fail - function untested\n"));
1076	hmmio = GlobalAlloc(GHND, sizeof(MMIOINFO));
1077	lpmminfo = (LPMMIOINFO) GlobalLock(hmmio);
1078
1079	if (lpmmioinfo)
1080	memcpy(lpmminfo, lpmmioinfo, sizeof(MMIOINFO));
1081
1082	/* assume DOS file if not otherwise specified */
1083	if (lpmminfo->fccIOProc == 0 && lpmminfo->pIOProc == NULL) {
1084
1085	lpmminfo->fccIOProc = mmioFOURCC('D', 'O', 'S', ' ');
1086	lpmminfo->pIOProc = (LPMMIOPROC) mmioDosIOProc;
1087
1088	}
1089	/* if just the four character code is present, look up IO proc */
1090	else if (lpmminfo->pIOProc == NULL) {
1091
1092	lpmminfo->pIOProc = mmioInstallIOProcA(lpmminfo->fccIOProc, NULL, MMIO_FINDPROC);
1093
1094	}
1095	/* (if IO proc specified, use it and specified four character code) */
1096
1097	result = (UINT) mmioSendMessage(hmmio, MMIOM_RENAME, (LPARAM) szFileName, (LPARAM) szNewFileName);
1098
1099	GlobalUnlock(hmmio);
1100	GlobalFree(hmmio);
1101
1102	return result;
1103	}
1104
1105
1106	/**************************************************************************
1107	* mmioRenameW [WINMM.126]
1108	*/
1109	ODINFUNCTION4(UINT,mmioRenameW,
1110	LPCWSTR,szFileName,
1111	LPCWSTR,szNewFileName,
1112	LPMMIOINFO,lpmmioinfo,
1113	DWORD,dwRenameFlags)
1114	{
1115	LPSTR szFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szFileName);
1116	LPSTR sznFn = HEAP_strdupWtoA(GetProcessHeap(), 0, szNewFileName);
1117	UINT ret = mmioRenameA(szFn, sznFn, lpmmioinfo, dwRenameFlags);
1118
1119	HeapFree(GetProcessHeap(),0,szFn);
1120	HeapFree(GetProcessHeap(),0,sznFn);
1121	return ret;
1122	}
1123
1124	ODINFUNCTION3(LPMMIOPROC, mmioInstallIOProcW,
1125	FOURCC, fccIOProc,
1126	LPMMIOPROC, pIOProc,
1127	DWORD, dwFlags)
1128	{
1129	// TODO: What is difference in mmioInstallIOProcW and mmioInstallIOProcA?
1130	dprintf(("WINMM:mmioInstallIOProcW - stub\n"));
1131	return 0;
1132	}

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