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user32: Fix checking of show count in ShowCursor.
[wine/multimedia.git] / dlls / msacm32 / internal.c
blobfeb6e9cb6cc331fa19c898b62a0927273872a305
1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
2
3 /*
4 * MSACM32 library
5 *
6 * Copyright 1998 Patrik Stridvall
7 * 1999 Eric Pouech
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 */
23
24 #include <stdarg.h>
25 #include <string.h>
26
27 #include "windef.h"
28 #include "winbase.h"
29 #include "wingdi.h"
30 #include "winuser.h"
31 #include "winerror.h"
32 #include "winreg.h"
33 #include "mmsystem.h"
34 #include "mmreg.h"
35 #include "msacm.h"
36 #include "msacmdrv.h"
37 #include "wineacm.h"
38 #include "wine/debug.h"
39 #include "wine/unicode.h"
40
41 WINE_DEFAULT_DEBUG_CHANNEL(msacm);
42
43 /**********************************************************************/
44
45 HANDLE MSACM_hHeap = NULL;
46 PWINE_ACMDRIVERID MSACM_pFirstACMDriverID = NULL;
47 static PWINE_ACMDRIVERID MSACM_pLastACMDriverID;
48
49 static DWORD MSACM_suspendBroadcastCount = 0;
50 static BOOL MSACM_pendingBroadcast = FALSE;
51 static PWINE_ACMNOTIFYWND MSACM_pFirstACMNotifyWnd = NULL;
52 static PWINE_ACMNOTIFYWND MSACM_pLastACMNotifyWnd = NULL;
53
54 static void MSACM_ReorderDriversByPriority(void);
55
56 /***********************************************************************
57 * MSACM_RegisterDriverFromRegistry()
58 */
59 PWINE_ACMDRIVERID MSACM_RegisterDriverFromRegistry(LPCWSTR pszRegEntry)
60 {
61 static const WCHAR msacmW[] = {'M','S','A','C','M','.'};
62 static const WCHAR drvkey[] = {'S','o','f','t','w','a','r','e','\\',
63 'M','i','c','r','o','s','o','f','t','\\',
64 'W','i','n','d','o','w','s',' ','N','T','\\',
65 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
66 'D','r','i','v','e','r','s','3','2','\0'};
67 WCHAR buf[2048];
68 DWORD bufLen, lRet;
69 HKEY hKey;
70 PWINE_ACMDRIVERID padid = NULL;
71
72 /* The requested registry entry must have the format msacm.XXXXX in order to
73 be recognized in any future sessions of msacm
74 */
75 if (0 == strncmpiW(pszRegEntry, msacmW, sizeof(msacmW)/sizeof(WCHAR))) {
76 lRet = RegOpenKeyExW(HKEY_LOCAL_MACHINE, drvkey, 0, KEY_QUERY_VALUE, &hKey);
77 if (lRet != ERROR_SUCCESS) {
78 WARN("unable to open registry key - 0x%08x\n", lRet);
79 } else {
80 bufLen = sizeof(buf);
81 lRet = RegQueryValueExW(hKey, pszRegEntry, NULL, NULL, (LPBYTE)buf, &bufLen);
82 if (lRet != ERROR_SUCCESS) {
83 WARN("unable to query requested subkey %s - 0x%08x\n", debugstr_w(pszRegEntry), lRet);
84 } else {
85 MSACM_RegisterDriver(pszRegEntry, buf, 0);
86 }
87 RegCloseKey( hKey );
88 }
89 }
90 return padid;
91 }
92
93 #if 0
94 /***********************************************************************
95 * MSACM_DumpCache
96 */
97 static void MSACM_DumpCache(PWINE_ACMDRIVERID padid)
98 {
99 unsigned i;
100
101 TRACE("cFilterTags=%lu cFormatTags=%lu fdwSupport=%08lx\n",
102 padid->cFilterTags, padid->cFormatTags, padid->fdwSupport);
103 for (i = 0; i < padid->cache->cFormatTags; i++) {
104 TRACE("\tdwFormatTag=%lu cbwfx=%lu\n",
105 padid->aFormatTag[i].dwFormatTag, padid->aFormatTag[i].cbwfx);
106 }
107 }
108 #endif
109
110 /***********************************************************************
111 * MSACM_FindFormatTagInCache [internal]
112 *
113 * Returns TRUE is the format tag fmtTag is present in the cache.
114 * If so, idx is set to its index.
115 */
116 BOOL MSACM_FindFormatTagInCache(const WINE_ACMDRIVERID* padid, DWORD fmtTag, LPDWORD idx)
117 {
118 unsigned i;
119
120 for (i = 0; i < padid->cFormatTags; i++) {
121 if (padid->aFormatTag[i].dwFormatTag == fmtTag) {
122 if (idx) *idx = i;
123 return TRUE;
124 }
125 }
126 return FALSE;
127 }
128
129 /***********************************************************************
130 * MSACM_FillCache
131 */
132 static BOOL MSACM_FillCache(PWINE_ACMDRIVERID padid)
133 {
134 HACMDRIVER had = 0;
135 unsigned int ntag;
136 ACMDRIVERDETAILSW add;
137 ACMFORMATTAGDETAILSW aftd;
138
139 if (acmDriverOpen(&had, (HACMDRIVERID)padid, 0) != 0)
140 return FALSE;
141
142 padid->aFormatTag = NULL;
143 add.cbStruct = sizeof(add);
144 if (MSACM_Message(had, ACMDM_DRIVER_DETAILS, (LPARAM)&add, 0))
145 goto errCleanUp;
146
147 if (add.cFormatTags > 0) {
148 padid->aFormatTag = HeapAlloc(MSACM_hHeap, HEAP_ZERO_MEMORY,
149 add.cFormatTags * sizeof(padid->aFormatTag[0]));
150 if (!padid->aFormatTag) goto errCleanUp;
151 }
152
153 padid->cFormatTags = add.cFormatTags;
154 padid->cFilterTags = add.cFilterTags;
155 padid->fdwSupport = add.fdwSupport;
156
157 aftd.cbStruct = sizeof(aftd);
158
159 for (ntag = 0; ntag < add.cFormatTags; ntag++) {
160 aftd.dwFormatTagIndex = ntag;
161 if (MSACM_Message(had, ACMDM_FORMATTAG_DETAILS, (LPARAM)&aftd, ACM_FORMATTAGDETAILSF_INDEX)) {
162 TRACE("IIOs (%s)\n", debugstr_w(padid->pszDriverAlias));
163 goto errCleanUp;
164 }
165 padid->aFormatTag[ntag].dwFormatTag = aftd.dwFormatTag;
166 padid->aFormatTag[ntag].cbwfx = aftd.cbFormatSize;
167 }
168
169 acmDriverClose(had, 0);
170
171 return TRUE;
172
173 errCleanUp:
174 if (had) acmDriverClose(had, 0);
175 HeapFree(MSACM_hHeap, 0, padid->aFormatTag);
176 padid->aFormatTag = NULL;
177 return FALSE;
178 }
179
180 /***********************************************************************
181 * MSACM_GetRegistryKey
182 */
183 static LPWSTR MSACM_GetRegistryKey(const WINE_ACMDRIVERID* padid)
184 {
185 static const WCHAR baseKey[] = {'S','o','f','t','w','a','r','e','\\','M','i','c','r','o','s','o','f','t','\\',
186 'A','u','d','i','o','C','o','m','p','r','e','s','s','i','o','n','M','a','n','a','g','e','r','\\',
187 'D','r','i','v','e','r','C','a','c','h','e','\\','\0'};
188 LPWSTR ret;
189 int len;
190
191 if (!padid->pszDriverAlias) {
192 ERR("No alias needed for registry entry\n");
193 return NULL;
194 }
195 len = strlenW(baseKey);
196 ret = HeapAlloc(MSACM_hHeap, 0, (len + strlenW(padid->pszDriverAlias) + 1) * sizeof(WCHAR));
197 if (!ret) return NULL;
198
199 strcpyW(ret, baseKey);
200 strcpyW(ret + len, padid->pszDriverAlias);
201 CharLowerW(ret + len);
202 return ret;
203 }
204
205 /***********************************************************************
206 * MSACM_ReadCache
207 */
208 static BOOL MSACM_ReadCache(PWINE_ACMDRIVERID padid)
209 {
210 LPWSTR key = MSACM_GetRegistryKey(padid);
211 HKEY hKey;
212 DWORD type, size;
213
214 if (!key) return FALSE;
215
216 padid->aFormatTag = NULL;
217
218 if (RegCreateKeyW(HKEY_LOCAL_MACHINE, key, &hKey))
219 goto errCleanUp;
220
221 size = sizeof(padid->cFormatTags);
222 if (RegQueryValueExA(hKey, "cFormatTags", 0, &type, (void*)&padid->cFormatTags, &size))
223 goto errCleanUp;
224 size = sizeof(padid->cFilterTags);
225 if (RegQueryValueExA(hKey, "cFilterTags", 0, &type, (void*)&padid->cFilterTags, &size))
226 goto errCleanUp;
227 size = sizeof(padid->fdwSupport);
228 if (RegQueryValueExA(hKey, "fdwSupport", 0, &type, (void*)&padid->fdwSupport, &size))
229 goto errCleanUp;
230
231 if (padid->cFormatTags > 0) {
232 size = padid->cFormatTags * sizeof(padid->aFormatTag[0]);
233 padid->aFormatTag = HeapAlloc(MSACM_hHeap, HEAP_ZERO_MEMORY, size);
234 if (!padid->aFormatTag) goto errCleanUp;
235 if (RegQueryValueExA(hKey, "aFormatTagCache", 0, &type, (void*)padid->aFormatTag, &size))
236 goto errCleanUp;
237 }
238 HeapFree(MSACM_hHeap, 0, key);
239 return TRUE;
240
241 errCleanUp:
242 HeapFree(MSACM_hHeap, 0, key);
243 HeapFree(MSACM_hHeap, 0, padid->aFormatTag);
244 padid->aFormatTag = NULL;
245 RegCloseKey(hKey);
246 return FALSE;
247 }
248
249 /***********************************************************************
250 * MSACM_WriteCache
251 */
252 static BOOL MSACM_WriteCache(const WINE_ACMDRIVERID *padid)
253 {
254 LPWSTR key = MSACM_GetRegistryKey(padid);
255 HKEY hKey;
256
257 if (!key) return FALSE;
258
259 if (RegCreateKeyW(HKEY_LOCAL_MACHINE, key, &hKey))
260 goto errCleanUp;
261
262 if (RegSetValueExA(hKey, "cFormatTags", 0, REG_DWORD, (const void*)&padid->cFormatTags, sizeof(DWORD)))
263 goto errCleanUp;
264 if (RegSetValueExA(hKey, "cFilterTags", 0, REG_DWORD, (const void*)&padid->cFilterTags, sizeof(DWORD)))
265 goto errCleanUp;
266 if (RegSetValueExA(hKey, "fdwSupport", 0, REG_DWORD, (const void*)&padid->fdwSupport, sizeof(DWORD)))
267 goto errCleanUp;
268 if (RegSetValueExA(hKey, "aFormatTagCache", 0, REG_BINARY,
269 (void*)padid->aFormatTag,
270 padid->cFormatTags * sizeof(padid->aFormatTag[0])))
271 goto errCleanUp;
272 HeapFree(MSACM_hHeap, 0, key);
273 return TRUE;
274
275 errCleanUp:
276 HeapFree(MSACM_hHeap, 0, key);
277 return FALSE;
278 }
279
280 /***********************************************************************
281 * MSACM_RegisterDriver()
282 */
283 PWINE_ACMDRIVERID MSACM_RegisterDriver(LPCWSTR pszDriverAlias, LPCWSTR pszFileName,
284 PWINE_ACMLOCALDRIVER pLocalDriver)
285 {
286 PWINE_ACMDRIVERID padid;
287
288 TRACE("(%s, %s, %p)\n",
289 debugstr_w(pszDriverAlias), debugstr_w(pszFileName), pLocalDriver);
290
291 padid = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMDRIVERID));
292 if (!padid)
293 return NULL;
294 padid->obj.dwType = WINE_ACMOBJ_DRIVERID;
295 padid->obj.pACMDriverID = padid;
296 padid->pszDriverAlias = NULL;
297 if (pszDriverAlias)
298 {
299 padid->pszDriverAlias = HeapAlloc( MSACM_hHeap, 0, (strlenW(pszDriverAlias)+1) * sizeof(WCHAR) );
300 if (!padid->pszDriverAlias) {
301 HeapFree(MSACM_hHeap, 0, padid);
302 return NULL;
303 }
304 strcpyW( padid->pszDriverAlias, pszDriverAlias );
305 }
306 padid->pszFileName = NULL;
307 if (pszFileName)
308 {
309 padid->pszFileName = HeapAlloc( MSACM_hHeap, 0, (strlenW(pszFileName)+1) * sizeof(WCHAR) );
310 if (!padid->pszFileName) {
311 HeapFree(MSACM_hHeap, 0, padid->pszDriverAlias);
312 HeapFree(MSACM_hHeap, 0, padid);
313 return NULL;
314 }
315 strcpyW( padid->pszFileName, pszFileName );
316 }
317 padid->pLocalDriver = pLocalDriver;
318
319 padid->pACMDriverList = NULL;
320
321 if (pLocalDriver) {
322 padid->pPrevACMDriverID = NULL;
323 padid->pNextACMDriverID = MSACM_pFirstACMDriverID;
324 if (MSACM_pFirstACMDriverID)
325 MSACM_pFirstACMDriverID->pPrevACMDriverID = padid;
326 MSACM_pFirstACMDriverID = padid;
327 if (!MSACM_pLastACMDriverID)
328 MSACM_pLastACMDriverID = padid;
329 } else {
330 padid->pNextACMDriverID = NULL;
331 padid->pPrevACMDriverID = MSACM_pLastACMDriverID;
332 if (MSACM_pLastACMDriverID)
333 MSACM_pLastACMDriverID->pNextACMDriverID = padid;
334 MSACM_pLastACMDriverID = padid;
335 if (!MSACM_pFirstACMDriverID)
336 MSACM_pFirstACMDriverID = padid;
337 }
338 /* disable the driver if we cannot load the cache */
339 if ((!padid->pszDriverAlias || !MSACM_ReadCache(padid)) && !MSACM_FillCache(padid)) {
340 WARN("Couldn't load cache for ACM driver (%s)\n", debugstr_w(pszFileName));
341 MSACM_UnregisterDriver(padid);
342 return NULL;
343 }
344
345 if (pLocalDriver) padid->fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_LOCAL;
346 return padid;
347 }
348
349 /***********************************************************************
350 * MSACM_RegisterAllDrivers()
351 */
352 void MSACM_RegisterAllDrivers(void)
353 {
354 static const WCHAR msacm32[] = {'m','s','a','c','m','3','2','.','d','l','l','\0'};
355 static const WCHAR msacmW[] = {'M','S','A','C','M','.'};
356 static const WCHAR drv32[] = {'d','r','i','v','e','r','s','3','2','\0'};
357 static const WCHAR sys[] = {'s','y','s','t','e','m','.','i','n','i','\0'};
358 static const WCHAR drvkey[] = {'S','o','f','t','w','a','r','e','\\',
359 'M','i','c','r','o','s','o','f','t','\\',
360 'W','i','n','d','o','w','s',' ','N','T','\\',
361 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
362 'D','r','i','v','e','r','s','3','2','\0'};
363 DWORD i, cnt = 0, bufLen, lRet;
364 WCHAR buf[2048], *name, *s;
365 FILETIME lastWrite;
366 HKEY hKey;
367
368 /* FIXME: What if the user edits system.ini while the program is running?
369 * Does Windows handle that? */
370 if (MSACM_pFirstACMDriverID) return;
371
372 lRet = RegOpenKeyExW(HKEY_LOCAL_MACHINE, drvkey, 0, KEY_QUERY_VALUE, &hKey);
373 if (lRet == ERROR_SUCCESS) {
374 RegQueryInfoKeyW( hKey, 0, 0, 0, &cnt, 0, 0, 0, 0, 0, 0, 0);
375 for (i = 0; i < cnt; i++) {
376 bufLen = sizeof(buf) / sizeof(buf[0]);
377 lRet = RegEnumKeyExW(hKey, i, buf, &bufLen, 0, 0, 0, &lastWrite);
378 if (lRet != ERROR_SUCCESS) continue;
379 if (strncmpiW(buf, msacmW, sizeof(msacmW)/sizeof(msacmW[0]))) continue;
380 if (!(name = strchrW(buf, '='))) continue;
381 *name = 0;
382 MSACM_RegisterDriver(buf, name + 1, 0);
383 }
384 RegCloseKey( hKey );
385 }
386
387 if (GetPrivateProfileSectionW(drv32, buf, sizeof(buf)/sizeof(buf[0]), sys))
388 {
389 for(s = buf; *s; s += strlenW(s) + 1)
390 {
391 if (strncmpiW(s, msacmW, sizeof(msacmW)/sizeof(msacmW[0]))) continue;
392 if (!(name = strchrW(s, '='))) continue;
393 *name = 0;
394 MSACM_RegisterDriver(s, name + 1, 0);
395 *name = '=';
396 }
397 }
398 MSACM_ReorderDriversByPriority();
399 MSACM_RegisterDriver(msacm32, msacm32, 0);
400 }
401
402 /***********************************************************************
403 * MSACM_RegisterNotificationWindow()
404 */
405 PWINE_ACMNOTIFYWND MSACM_RegisterNotificationWindow(HWND hNotifyWnd, DWORD dwNotifyMsg)
406 {
407 PWINE_ACMNOTIFYWND panwnd;
408
409 TRACE("(%p,0x%08x)\n", hNotifyWnd, dwNotifyMsg);
410
411 panwnd = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMNOTIFYWND));
412 panwnd->obj.dwType = WINE_ACMOBJ_NOTIFYWND;
413 panwnd->obj.pACMDriverID = 0;
414 panwnd->hNotifyWnd = hNotifyWnd;
415 panwnd->dwNotifyMsg = dwNotifyMsg;
416 panwnd->fdwSupport = 0;
417
418 panwnd->pNextACMNotifyWnd = NULL;
419 panwnd->pPrevACMNotifyWnd = MSACM_pLastACMNotifyWnd;
420 if (MSACM_pLastACMNotifyWnd)
421 MSACM_pLastACMNotifyWnd->pNextACMNotifyWnd = panwnd;
422 MSACM_pLastACMNotifyWnd = panwnd;
423 if (!MSACM_pFirstACMNotifyWnd)
424 MSACM_pFirstACMNotifyWnd = panwnd;
425
426 return panwnd;
427 }
428
429 /***********************************************************************
430 * MSACM_BroadcastNotification()
431 */
432 void MSACM_BroadcastNotification(void)
433 {
434 if (MSACM_suspendBroadcastCount <= 0) {
435 PWINE_ACMNOTIFYWND panwnd;
436
437 for (panwnd = MSACM_pFirstACMNotifyWnd; panwnd; panwnd = panwnd->pNextACMNotifyWnd)
438 if (!(panwnd->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED))
439 SendMessageW(panwnd->hNotifyWnd, panwnd->dwNotifyMsg, 0, 0);
440 } else {
441 MSACM_pendingBroadcast = TRUE;
442 }
443 }
444
445 /***********************************************************************
446 * MSACM_DisableNotifications()
447 */
448 void MSACM_DisableNotifications(void)
449 {
450 MSACM_suspendBroadcastCount++;
451 }
452
453 /***********************************************************************
454 * MSACM_EnableNotifications()
455 */
456 void MSACM_EnableNotifications(void)
457 {
458 if (MSACM_suspendBroadcastCount > 0) {
459 MSACM_suspendBroadcastCount--;
460 if (MSACM_suspendBroadcastCount == 0 && MSACM_pendingBroadcast) {
461 MSACM_pendingBroadcast = FALSE;
462 MSACM_BroadcastNotification();
463 }
464 }
465 }
466
467 /***********************************************************************
468 * MSACM_UnRegisterNotificationWindow()
469 */
470 PWINE_ACMNOTIFYWND MSACM_UnRegisterNotificationWindow(const WINE_ACMNOTIFYWND *panwnd)
471 {
472 PWINE_ACMNOTIFYWND p;
473
474 for (p = MSACM_pFirstACMNotifyWnd; p; p = p->pNextACMNotifyWnd) {
475 if (p == panwnd) {
476 PWINE_ACMNOTIFYWND pNext = p->pNextACMNotifyWnd;
477
478 if (p->pPrevACMNotifyWnd) p->pPrevACMNotifyWnd->pNextACMNotifyWnd = p->pNextACMNotifyWnd;
479 if (p->pNextACMNotifyWnd) p->pNextACMNotifyWnd->pPrevACMNotifyWnd = p->pPrevACMNotifyWnd;
480 if (MSACM_pFirstACMNotifyWnd == p) MSACM_pFirstACMNotifyWnd = p->pNextACMNotifyWnd;
481 if (MSACM_pLastACMNotifyWnd == p) MSACM_pLastACMNotifyWnd = p->pPrevACMNotifyWnd;
482 HeapFree(MSACM_hHeap, 0, p);
483
484 return pNext;
485 }
486 }
487 return NULL;
488 }
489
490 /***********************************************************************
491 * MSACM_RePositionDriver()
492 */
493 void MSACM_RePositionDriver(PWINE_ACMDRIVERID padid, DWORD dwPriority)
494 {
495 PWINE_ACMDRIVERID pTargetPosition = NULL;
496
497 /* Remove selected driver from linked list */
498 if (MSACM_pFirstACMDriverID == padid) {
499 MSACM_pFirstACMDriverID = padid->pNextACMDriverID;
500 }
501 if (MSACM_pLastACMDriverID == padid) {
502 MSACM_pLastACMDriverID = padid->pPrevACMDriverID;
503 }
504 if (padid->pPrevACMDriverID != NULL) {
505 padid->pPrevACMDriverID->pNextACMDriverID = padid->pNextACMDriverID;
506 }
507 if (padid->pNextACMDriverID != NULL) {
508 padid->pNextACMDriverID->pPrevACMDriverID = padid->pPrevACMDriverID;
509 }
510
511 /* Look up position where selected driver should be */
512 if (dwPriority == 1) {
513 pTargetPosition = padid->pPrevACMDriverID;
514 while (pTargetPosition->pPrevACMDriverID != NULL &&
515 !(pTargetPosition->pPrevACMDriverID->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_LOCAL)) {
516 pTargetPosition = pTargetPosition->pPrevACMDriverID;
517 }
518 } else if (dwPriority == -1) {
519 pTargetPosition = padid->pNextACMDriverID;
520 while (pTargetPosition->pNextACMDriverID != NULL) {
521 pTargetPosition = pTargetPosition->pNextACMDriverID;
522 }
523 }
524
525 /* Place selected driver in selected position */
526 padid->pPrevACMDriverID = pTargetPosition->pPrevACMDriverID;
527 padid->pNextACMDriverID = pTargetPosition;
528 if (padid->pPrevACMDriverID != NULL) {
529 padid->pPrevACMDriverID->pNextACMDriverID = padid;
530 } else {
531 MSACM_pFirstACMDriverID = padid;
532 }
533 if (padid->pNextACMDriverID != NULL) {
534 padid->pNextACMDriverID->pPrevACMDriverID = padid;
535 } else {
536 MSACM_pLastACMDriverID = padid;
537 }
538 }
539
540 /***********************************************************************
541 * MSACM_ReorderDriversByPriority()
542 * Reorders all drivers based on the priority list indicated by the registry key:
543 * HKCU\\Software\\Microsoft\\Multimedia\\Audio Compression Manager\\Priority v4.00
544 */
545 static void MSACM_ReorderDriversByPriority(void)
546 {
547 PWINE_ACMDRIVERID padid;
548 unsigned int iNumDrivers;
549 PWINE_ACMDRIVERID * driverList = NULL;
550 HKEY hPriorityKey = NULL;
551
552 TRACE("\n");
553
554 /* Count drivers && alloc corresponding memory for list */
555 iNumDrivers = 0;
556 for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) iNumDrivers++;
557 if (iNumDrivers > 1)
558 {
559 LONG lError;
560 static const WCHAR basePriorityKey[] = {
561 'S','o','f','t','w','a','r','e','\\',
562 'M','i','c','r','o','s','o','f','t','\\',
563 'M','u','l','t','i','m','e','d','i','a','\\',
564 'A','u','d','i','o',' ','C','o','m','p','r','e','s','s','i','o','n',' ','M','a','n','a','g','e','r','\\',
565 'P','r','i','o','r','i','t','y',' ','v','4','.','0','0','\0'
566 };
567 unsigned int i;
568 LONG lBufferLength;
569 WCHAR szBuffer[256];
570
571 driverList = HeapAlloc(MSACM_hHeap, 0, iNumDrivers * sizeof(PWINE_ACMDRIVERID));
572 if (!driverList)
573 {
574 ERR("out of memory\n");
575 goto errCleanUp;
576 }
577
578 lError = RegOpenKeyW(HKEY_CURRENT_USER, basePriorityKey, &hPriorityKey);
579 if (lError != ERROR_SUCCESS) {
580 TRACE("RegOpenKeyW failed, possibly key does not exist yet\n");
581 hPriorityKey = NULL;
582 goto errCleanUp;
583 }
584
585 /* Copy drivers into list to simplify linked list modification */
586 for (i = 0, padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID, i++)
587 {
588 driverList[i] = padid;
589 }
590
591 /* Query each of the priorities in turn. Alias key is in lowercase.
592 The general form of the priority record is the following:
593 "PriorityN" --> "1, msacm.driveralias"
594 where N is an integer, and the value is a string of the driver
595 alias, prefixed by "1, " for an enabled driver, or "0, " for a
596 disabled driver.
597 */
598 for (i = 0; i < iNumDrivers; i++)
599 {
600 static const WCHAR priorityTmpl[] = {'P','r','i','o','r','i','t','y','%','l','d','\0'};
601 WCHAR szSubKey[17];
602 unsigned int iTargetPosition;
603 unsigned int iCurrentPosition;
604 WCHAR * pAlias;
605 static const WCHAR sPrefix[] = {'m','s','a','c','m','.','\0'};
606
607 /* Build expected entry name */
608 snprintfW(szSubKey, 17, priorityTmpl, i + 1);
609 lBufferLength = sizeof(szBuffer);
610 lError = RegQueryValueExW(hPriorityKey, szSubKey, NULL, NULL, (LPBYTE)szBuffer, (LPDWORD)&lBufferLength);
611 if (lError != ERROR_SUCCESS) continue;
612
613 /* Recovered driver alias should be at this position */
614 iTargetPosition = i;
615
616 /* Locate driver alias in driver list */
617 pAlias = strstrW(szBuffer, sPrefix);
618 if (pAlias == NULL) continue;
619
620 for (iCurrentPosition = 0; iCurrentPosition < iNumDrivers; iCurrentPosition++) {
621 if (strcmpiW(driverList[iCurrentPosition]->pszDriverAlias, pAlias) == 0)
622 break;
623 }
624 if (iCurrentPosition < iNumDrivers && iTargetPosition != iCurrentPosition) {
625 padid = driverList[iTargetPosition];
626 driverList[iTargetPosition] = driverList[iCurrentPosition];
627 driverList[iCurrentPosition] = padid;
628
629 /* Locate enabled status */
630 if (szBuffer[0] == '1') {
631 driverList[iTargetPosition]->fdwSupport &= ~ACMDRIVERDETAILS_SUPPORTF_DISABLED;
632 } else if (szBuffer[0] == '0') {
633 driverList[iTargetPosition]->fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_DISABLED;
634 }
635 }
636 }
637
638 /* Re-assign pointers so that linked list traverses the ordered array */
639 for (i = 0; i < iNumDrivers; i++) {
640 driverList[i]->pPrevACMDriverID = (i > 0) ? driverList[i - 1] : NULL;
641 driverList[i]->pNextACMDriverID = (i < iNumDrivers - 1) ? driverList[i + 1] : NULL;
642 }
643 MSACM_pFirstACMDriverID = driverList[0];
644 MSACM_pLastACMDriverID = driverList[iNumDrivers - 1];
645 }
646
647 errCleanUp:
648 if (hPriorityKey != NULL) RegCloseKey(hPriorityKey);
649 HeapFree(MSACM_hHeap, 0, driverList);
650 }
651
652 /***********************************************************************
653 * MSACM_WriteCurrentPriorities()
654 * Writes out current order of driver priorities to registry key:
655 * HKCU\\Software\\Microsoft\\Multimedia\\Audio Compression Manager\\Priority v4.00
656 */
657 void MSACM_WriteCurrentPriorities(void)
658 {
659 LONG lError;
660 HKEY hPriorityKey;
661 static const WCHAR basePriorityKey[] = {
662 'S','o','f','t','w','a','r','e','\\',
663 'M','i','c','r','o','s','o','f','t','\\',
664 'M','u','l','t','i','m','e','d','i','a','\\',
665 'A','u','d','i','o',' ','C','o','m','p','r','e','s','s','i','o','n',' ','M','a','n','a','g','e','r','\\',
666 'P','r','i','o','r','i','t','y',' ','v','4','.','0','0','\0'
667 };
668 PWINE_ACMDRIVERID padid;
669 DWORD dwPriorityCounter;
670 static const WCHAR priorityTmpl[] = {'P','r','i','o','r','i','t','y','%','l','d','\0'};
671 static const WCHAR valueTmpl[] = {'%','c',',',' ','%','s','\0'};
672 static const WCHAR converterAlias[] = {'I','n','t','e','r','n','a','l',' ','P','C','M',' ','C','o','n','v','e','r','t','e','r','\0'};
673 WCHAR szSubKey[17];
674 WCHAR szBuffer[256];
675
676 /* Delete ACM priority key and create it anew */
677 lError = RegDeleteKeyW(HKEY_CURRENT_USER, basePriorityKey);
678 if (lError != ERROR_SUCCESS && lError != ERROR_FILE_NOT_FOUND) {
679 ERR("unable to remove current key %s (0x%08x) - priority changes won't persist past application end.\n",
680 debugstr_w(basePriorityKey), lError);
681 return;
682 }
683 lError = RegCreateKeyW(HKEY_CURRENT_USER, basePriorityKey, &hPriorityKey);
684 if (lError != ERROR_SUCCESS) {
685 ERR("unable to create key %s (0x%08x) - priority changes won't persist past application end.\n",
686 debugstr_w(basePriorityKey), lError);
687 return;
688 }
689
690 /* Write current list of priorities */
691 for (dwPriorityCounter = 0, padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
692 if (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_LOCAL) continue;
693 if (padid->pszDriverAlias == NULL) continue; /* internal PCM converter is last */
694
695 /* Build required value name */
696 dwPriorityCounter++;
697 snprintfW(szSubKey, 17, priorityTmpl, dwPriorityCounter);
698
699 /* Value has a 1 in front for enabled drivers and 0 for disabled drivers */
700 snprintfW(szBuffer, 256, valueTmpl, (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) ? '0' : '1', padid->pszDriverAlias);
701 strlwrW(szBuffer);
702
703 lError = RegSetValueExW(hPriorityKey, szSubKey, 0, REG_SZ, (BYTE *)szBuffer, (strlenW(szBuffer) + 1) * sizeof(WCHAR));
704 if (lError != ERROR_SUCCESS) {
705 ERR("unable to write value for %s under key %s (0x%08x)\n",
706 debugstr_w(padid->pszDriverAlias), debugstr_w(basePriorityKey), lError);
707 }
708 }
709
710 /* Build required value name */
711 dwPriorityCounter++;
712 snprintfW(szSubKey, 17, priorityTmpl, dwPriorityCounter);
713
714 /* Value has a 1 in front for enabled drivers and 0 for disabled drivers */
715 snprintfW(szBuffer, 256, valueTmpl, '1', converterAlias);
716
717 lError = RegSetValueExW(hPriorityKey, szSubKey, 0, REG_SZ, (BYTE *)szBuffer, (strlenW(szBuffer) + 1) * sizeof(WCHAR));
718 if (lError != ERROR_SUCCESS) {
719 ERR("unable to write value for %s under key %s (0x%08x)\n",
720 debugstr_w(converterAlias), debugstr_w(basePriorityKey), lError);
721 }
722 RegCloseKey(hPriorityKey);
723 }
724
725 static PWINE_ACMLOCALDRIVER MSACM_pFirstACMLocalDriver;
726 static PWINE_ACMLOCALDRIVER MSACM_pLastACMLocalDriver;
727
728 static PWINE_ACMLOCALDRIVER MSACM_UnregisterLocalDriver(PWINE_ACMLOCALDRIVER paldrv)
729 {
730 PWINE_ACMLOCALDRIVER pNextACMLocalDriver;
731
732 if (paldrv->pACMInstList) {
733 ERR("local driver instances still present after closing all drivers - memory leak\n");
734 return NULL;
735 }
736
737 if (paldrv == MSACM_pFirstACMLocalDriver)
738 MSACM_pFirstACMLocalDriver = paldrv->pNextACMLocalDrv;
739 if (paldrv == MSACM_pLastACMLocalDriver)
740 MSACM_pLastACMLocalDriver = paldrv->pPrevACMLocalDrv;
741
742 if (paldrv->pPrevACMLocalDrv)
743 paldrv->pPrevACMLocalDrv->pNextACMLocalDrv = paldrv->pNextACMLocalDrv;
744 if (paldrv->pNextACMLocalDrv)
745 paldrv->pNextACMLocalDrv->pPrevACMLocalDrv = paldrv->pPrevACMLocalDrv;
746
747 pNextACMLocalDriver = paldrv->pNextACMLocalDrv;
748
749 HeapFree(MSACM_hHeap, 0, paldrv);
750
751 return pNextACMLocalDriver;
752 }
753
754 /***********************************************************************
755 * MSACM_UnregisterDriver()
756 */
757 PWINE_ACMDRIVERID MSACM_UnregisterDriver(PWINE_ACMDRIVERID p)
758 {
759 PWINE_ACMDRIVERID pNextACMDriverID;
760
761 while (p->pACMDriverList)
762 acmDriverClose((HACMDRIVER) p->pACMDriverList, 0);
763
764 HeapFree(MSACM_hHeap, 0, p->pszDriverAlias);
765 HeapFree(MSACM_hHeap, 0, p->pszFileName);
766 HeapFree(MSACM_hHeap, 0, p->aFormatTag);
767
768 if (p == MSACM_pFirstACMDriverID)
769 MSACM_pFirstACMDriverID = p->pNextACMDriverID;
770 if (p == MSACM_pLastACMDriverID)
771 MSACM_pLastACMDriverID = p->pPrevACMDriverID;
772
773 if (p->pPrevACMDriverID)
774 p->pPrevACMDriverID->pNextACMDriverID = p->pNextACMDriverID;
775 if (p->pNextACMDriverID)
776 p->pNextACMDriverID->pPrevACMDriverID = p->pPrevACMDriverID;
777
778 pNextACMDriverID = p->pNextACMDriverID;
779
780 if (p->pLocalDriver) MSACM_UnregisterLocalDriver(p->pLocalDriver);
781 HeapFree(MSACM_hHeap, 0, p);
782
783 return pNextACMDriverID;
784 }
785
786 /***********************************************************************
787 * MSACM_UnregisterAllDrivers()
788 */
789 void MSACM_UnregisterAllDrivers(void)
790 {
791 PWINE_ACMNOTIFYWND panwnd = MSACM_pFirstACMNotifyWnd;
792 PWINE_ACMDRIVERID p = MSACM_pFirstACMDriverID;
793
794 while (p) {
795 MSACM_WriteCache(p);
796 p = MSACM_UnregisterDriver(p);
797 }
798
799 while (panwnd) {
800 panwnd = MSACM_UnRegisterNotificationWindow(panwnd);
801 }
802 }
803
804 /***********************************************************************
805 * MSACM_GetObj()
806 */
807 PWINE_ACMOBJ MSACM_GetObj(HACMOBJ hObj, DWORD type)
808 {
809 PWINE_ACMOBJ pao = (PWINE_ACMOBJ)hObj;
810
811 if (pao == NULL || IsBadReadPtr(pao, sizeof(WINE_ACMOBJ)) ||
812 ((type != WINE_ACMOBJ_DONTCARE) && (type != pao->dwType)))
813 return NULL;
814 return pao;
815 }
816
817 /***********************************************************************
818 * MSACM_GetDriverID()
819 */
820 PWINE_ACMDRIVERID MSACM_GetDriverID(HACMDRIVERID hDriverID)
821 {
822 return (PWINE_ACMDRIVERID)MSACM_GetObj((HACMOBJ)hDriverID, WINE_ACMOBJ_DRIVERID);
823 }
824
825 /***********************************************************************
826 * MSACM_GetDriver()
827 */
828 PWINE_ACMDRIVER MSACM_GetDriver(HACMDRIVER hDriver)
829 {
830 return (PWINE_ACMDRIVER)MSACM_GetObj((HACMOBJ)hDriver, WINE_ACMOBJ_DRIVER);
831 }
832
833 /***********************************************************************
834 * MSACM_GetNotifyWnd()
835 */
836 PWINE_ACMNOTIFYWND MSACM_GetNotifyWnd(HACMDRIVERID hDriver)
837 {
838 return (PWINE_ACMNOTIFYWND)MSACM_GetObj((HACMOBJ)hDriver, WINE_ACMOBJ_NOTIFYWND);
839 }
840
841 /***********************************************************************
842 * MSACM_GetLocalDriver()
843 */
844 /*
845 PWINE_ACMLOCALDRIVER MSACM_GetLocalDriver(HACMDRIVER hDriver)
846 {
847 return (PWINE_ACMLOCALDRIVER)MSACM_GetObj((HACMOBJ)hDriver, WINE_ACMOBJ_LOCALDRIVER);
848 }
849 */
850 #define MSACM_DRIVER_SendMessage(PDRVRINST, msg, lParam1, lParam2) \
851 (PDRVRINST)->pLocalDriver->lpDrvProc((PDRVRINST)->dwDriverID, (HDRVR)(PDRVRINST), msg, lParam1, lParam2)
852
853 /***********************************************************************
854 * MSACM_Message()
855 */
856 MMRESULT MSACM_Message(HACMDRIVER had, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
857 {
858 PWINE_ACMDRIVER pad = MSACM_GetDriver(had);
859
860 if (!pad) return MMSYSERR_INVALHANDLE;
861 if (pad->hDrvr) return SendDriverMessage(pad->hDrvr, uMsg, lParam1, lParam2);
862 if (pad->pLocalDrvrInst) return MSACM_DRIVER_SendMessage(pad->pLocalDrvrInst, uMsg, lParam1, lParam2);
863
864 return MMSYSERR_INVALHANDLE;
865 }
866
867 PWINE_ACMLOCALDRIVER MSACM_RegisterLocalDriver(HMODULE hModule, DRIVERPROC lpDriverProc)
868 {
869 PWINE_ACMLOCALDRIVER paldrv;
870
871 TRACE("(%p, %p)\n", hModule, lpDriverProc);
872 if (!hModule || !lpDriverProc) return NULL;
873
874 /* look up previous instance of local driver module */
875 for (paldrv = MSACM_pFirstACMLocalDriver; paldrv; paldrv = paldrv->pNextACMLocalDrv)
876 {
877 if (paldrv->hModule == hModule && paldrv->lpDrvProc == lpDriverProc) return paldrv;
878 }
879
880 paldrv = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMLOCALDRIVER));
881 paldrv->obj.dwType = WINE_ACMOBJ_LOCALDRIVER;
882 paldrv->obj.pACMDriverID = 0;
883 paldrv->hModule = hModule;
884 paldrv->lpDrvProc = lpDriverProc;
885 paldrv->pACMInstList = NULL;
886
887 paldrv->pNextACMLocalDrv = NULL;
888 paldrv->pPrevACMLocalDrv = MSACM_pLastACMLocalDriver;
889 if (MSACM_pLastACMLocalDriver)
890 MSACM_pLastACMLocalDriver->pNextACMLocalDrv = paldrv;
891 MSACM_pLastACMLocalDriver = paldrv;
892 if (!MSACM_pFirstACMLocalDriver)
893 MSACM_pFirstACMLocalDriver = paldrv;
894
895 return paldrv;
896 }
897
898 /**************************************************************************
899 * MSACM_GetNumberOfModuleRefs [internal]
900 *
901 * Returns the number of open drivers which share the same module.
902 * Inspired from implementation in dlls/winmm/driver.c
903 */
904 static unsigned MSACM_GetNumberOfModuleRefs(HMODULE hModule, DRIVERPROC lpDrvProc, WINE_ACMLOCALDRIVERINST ** found)
905 {
906 PWINE_ACMLOCALDRIVER lpDrv;
907 unsigned count = 0;
908
909 if (found) *found = NULL;
910 for (lpDrv = MSACM_pFirstACMLocalDriver; lpDrv; lpDrv = lpDrv->pNextACMLocalDrv)
911 {
912 if (lpDrv->hModule == hModule && lpDrv->lpDrvProc == lpDrvProc)
913 {
914 PWINE_ACMLOCALDRIVERINST pInst = lpDrv->pACMInstList;
915
916 while (pInst) {
917 if (found && !*found) *found = pInst;
918 count++;
919 pInst = pInst->pNextACMInst;
920 }
921 }
922 }
923 return count;
924 }
925
926 /**************************************************************************
927 * MSACM_RemoveFromList [internal]
928 *
929 * Generates all the logic to handle driver closure / deletion
930 * Removes a driver struct to the list of open drivers.
931 */
932 static BOOL MSACM_RemoveFromList(PWINE_ACMLOCALDRIVERINST lpDrv)
933 {
934 PWINE_ACMLOCALDRIVER pDriverBase = lpDrv->pLocalDriver;
935 PWINE_ACMLOCALDRIVERINST pPrevInst;
936
937 /* last of this driver in list ? */
938 if (MSACM_GetNumberOfModuleRefs(pDriverBase->hModule, pDriverBase->lpDrvProc, NULL) == 1) {
939 MSACM_DRIVER_SendMessage(lpDrv, DRV_DISABLE, 0L, 0L);
940 MSACM_DRIVER_SendMessage(lpDrv, DRV_FREE, 0L, 0L);
941 }
942
943 pPrevInst = NULL;
944 if (pDriverBase->pACMInstList != lpDrv) {
945 pPrevInst = pDriverBase->pACMInstList;
946 while (pPrevInst && pPrevInst->pNextACMInst != lpDrv)
947 pPrevInst = pPrevInst->pNextACMInst;
948 if (!pPrevInst) {
949 ERR("requested to remove invalid instance %p\n", pPrevInst);
950 return FALSE;
951 }
952 }
953 if (!pPrevInst) {
954 /* first driver instance on list */
955 pDriverBase->pACMInstList = lpDrv->pNextACMInst;
956 } else {
957 pPrevInst->pNextACMInst = lpDrv->pNextACMInst;
958 }
959 return TRUE;
960 }
961
962 /**************************************************************************
963 * MSACM_AddToList [internal]
964 *
965 * Adds a driver struct to the list of open drivers.
966 * Generates all the logic to handle driver creation / open.
967 */
968 static BOOL MSACM_AddToList(PWINE_ACMLOCALDRIVERINST lpNewDrv, LPARAM lParam2)
969 {
970 PWINE_ACMLOCALDRIVER pDriverBase = lpNewDrv->pLocalDriver;
971
972 /* first of this driver in list ? */
973 if (MSACM_GetNumberOfModuleRefs(pDriverBase->hModule, pDriverBase->lpDrvProc, NULL) == 0) {
974 if (MSACM_DRIVER_SendMessage(lpNewDrv, DRV_LOAD, 0L, 0L) != DRV_SUCCESS) {
975 FIXME("DRV_LOAD failed on driver %p\n", lpNewDrv);
976 return FALSE;
977 }
978 /* returned value is not checked */
979 MSACM_DRIVER_SendMessage(lpNewDrv, DRV_ENABLE, 0L, 0L);
980 }
981
982 lpNewDrv->pNextACMInst = NULL;
983 if (pDriverBase->pACMInstList == NULL) {
984 pDriverBase->pACMInstList = lpNewDrv;
985 } else {
986 PWINE_ACMLOCALDRIVERINST lpDrvInst = pDriverBase->pACMInstList;
987
988 while (lpDrvInst->pNextACMInst != NULL)
989 lpDrvInst = lpDrvInst->pNextACMInst;
990
991 lpDrvInst->pNextACMInst = lpNewDrv;
992 }
993
994 /* Now just open a new instance of a driver on this module */
995 lpNewDrv->dwDriverID = MSACM_DRIVER_SendMessage(lpNewDrv, DRV_OPEN, 0, lParam2);
996
997 if (lpNewDrv->dwDriverID == 0) {
998 FIXME("DRV_OPEN failed on driver %p\n", lpNewDrv);
999 MSACM_RemoveFromList(lpNewDrv);
1000 return FALSE;
1001 }
1002 return TRUE;
1003 }
1004
1005 PWINE_ACMLOCALDRIVERINST MSACM_OpenLocalDriver(PWINE_ACMLOCALDRIVER paldrv, LPARAM lParam2)
1006 {
1007 PWINE_ACMLOCALDRIVERINST pDrvInst;
1008
1009 pDrvInst = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMLOCALDRIVERINST));
1010 pDrvInst->pLocalDriver = paldrv;
1011 pDrvInst->dwDriverID = 0;
1012 pDrvInst->pNextACMInst = NULL;
1013 pDrvInst->bSession = FALSE;
1014
1015 /* Win32 installable drivers must support a two phase opening scheme:
1016 * + first open with NULL as lParam2 (session instance),
1017 * + then do a second open with the real non null lParam2)
1018 */
1019 if (MSACM_GetNumberOfModuleRefs(paldrv->hModule, paldrv->lpDrvProc, NULL) == 0 && lParam2)
1020 {
1021 PWINE_ACMLOCALDRIVERINST ret;
1022
1023 if (!MSACM_AddToList(pDrvInst, 0L))
1024 {
1025 ERR("load0 failed\n");
1026 goto exit;
1027 }
1028 ret = MSACM_OpenLocalDriver(paldrv, lParam2);
1029 if (!ret)
1030 {
1031 MSACM_CloseLocalDriver(pDrvInst);
1032 ERR("load1 failed\n");
1033 goto exit;
1034 }
1035 pDrvInst->bSession = TRUE;
1036 return ret;
1037 }
1038
1039 if (!MSACM_AddToList(pDrvInst, lParam2))
1040 {
1041 ERR("load failed\n");
1042 goto exit;
1043 }
1044
1045 TRACE("=> %p\n", pDrvInst);
1046 return pDrvInst;
1047 exit:
1048 HeapFree(MSACM_hHeap, 0, pDrvInst);
1049 return NULL;
1050 }
1051
1052 LRESULT MSACM_CloseLocalDriver(PWINE_ACMLOCALDRIVERINST paldrv)
1053 {
1054 if (MSACM_RemoveFromList(paldrv)) {
1055 PWINE_ACMLOCALDRIVERINST lpDrv0;
1056 PWINE_ACMLOCALDRIVER pDriverBase = paldrv->pLocalDriver;
1057
1058 MSACM_DRIVER_SendMessage(paldrv, DRV_CLOSE, 0, 0);
1059 paldrv->dwDriverID = 0;
1060
1061 if (paldrv->bSession)
1062 ERR("should not directly close session instance (%p)\n", paldrv);
1063
1064 /* if driver has an opened session instance, we have to close it too */
1065 if (MSACM_GetNumberOfModuleRefs(pDriverBase->hModule, pDriverBase->lpDrvProc, &lpDrv0) == 1 &&
1066 lpDrv0->bSession)
1067 {
1068 MSACM_DRIVER_SendMessage(lpDrv0, DRV_CLOSE, 0L, 0L);
1069 lpDrv0->dwDriverID = 0;
1070 MSACM_RemoveFromList(lpDrv0);
1071 HeapFree(GetProcessHeap(), 0, lpDrv0);
1072 }
1073
1074 HeapFree(MSACM_hHeap, 0, paldrv);
1075 return TRUE;
1076 }
1077 ERR("unable to close driver instance\n");
1078 return FALSE;
1079 }
Maarten's multimedia branch