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loader: Use plain binary name of git-describe to avoid junk in version output.
[wine.git] / dlls / msacm32 / internal.c
blobaa360534508f94ffa54974079832ae033ed2889f
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 PWINE_ACMDRIVERID MSACM_pLastACMDriverID = NULL;
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(buf, 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(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(PWINE_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, (void*)&padid->cFormatTags, sizeof(DWORD)))
263 goto errCleanUp;
264 if (RegSetValueExA(hKey, "cFilterTags", 0, REG_DWORD, (void*)&padid->cFilterTags, sizeof(DWORD)))
265 goto errCleanUp;
266 if (RegSetValueExA(hKey, "fdwSupport", 0, REG_DWORD, (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 padid->obj.dwType = WINE_ACMOBJ_DRIVERID;
293 padid->obj.pACMDriverID = padid;
294 padid->pszDriverAlias = NULL;
295 if (pszDriverAlias)
296 {
297 padid->pszDriverAlias = HeapAlloc( MSACM_hHeap, 0, (strlenW(pszDriverAlias)+1) * sizeof(WCHAR) );
298 strcpyW( padid->pszDriverAlias, pszDriverAlias );
299 }
300 padid->pszFileName = NULL;
301 if (pszFileName)
302 {
303 padid->pszFileName = HeapAlloc( MSACM_hHeap, 0, (strlenW(pszFileName)+1) * sizeof(WCHAR) );
304 strcpyW( padid->pszFileName, pszFileName );
305 }
306 padid->pLocalDriver = pLocalDriver;
307
308 padid->pACMDriverList = NULL;
309
310 if (pLocalDriver) {
311 padid->pPrevACMDriverID = NULL;
312 padid->pNextACMDriverID = MSACM_pFirstACMDriverID;
313 if (MSACM_pFirstACMDriverID)
314 MSACM_pFirstACMDriverID->pPrevACMDriverID = padid;
315 MSACM_pFirstACMDriverID = padid;
316 if (!MSACM_pLastACMDriverID)
317 MSACM_pLastACMDriverID = padid;
318 } else {
319 padid->pNextACMDriverID = NULL;
320 padid->pPrevACMDriverID = MSACM_pLastACMDriverID;
321 if (MSACM_pLastACMDriverID)
322 MSACM_pLastACMDriverID->pNextACMDriverID = padid;
323 MSACM_pLastACMDriverID = padid;
324 if (!MSACM_pFirstACMDriverID)
325 MSACM_pFirstACMDriverID = padid;
326 }
327 /* disable the driver if we cannot load the cache */
328 if ((!padid->pszDriverAlias || !MSACM_ReadCache(padid)) && !MSACM_FillCache(padid)) {
329 WARN("Couldn't load cache for ACM driver (%s)\n", debugstr_w(pszFileName));
330 MSACM_UnregisterDriver(padid);
331 return NULL;
332 }
333
334 if (pLocalDriver) padid->fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_LOCAL;
335 return padid;
336 }
337
338 /***********************************************************************
339 * MSACM_RegisterAllDrivers()
340 */
341 void MSACM_RegisterAllDrivers(void)
342 {
343 static const WCHAR msacm32[] = {'m','s','a','c','m','3','2','.','d','l','l','\0'};
344 static const WCHAR msacmW[] = {'M','S','A','C','M','.'};
345 static const WCHAR drv32[] = {'d','r','i','v','e','r','s','3','2','\0'};
346 static const WCHAR sys[] = {'s','y','s','t','e','m','.','i','n','i','\0'};
347 static const WCHAR drvkey[] = {'S','o','f','t','w','a','r','e','\\',
348 'M','i','c','r','o','s','o','f','t','\\',
349 'W','i','n','d','o','w','s',' ','N','T','\\',
350 'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
351 'D','r','i','v','e','r','s','3','2','\0'};
352 DWORD i, cnt = 0, bufLen, lRet;
353 WCHAR buf[2048], *name, *s;
354 FILETIME lastWrite;
355 HKEY hKey;
356
357 /* FIXME: What if the user edits system.ini while the program is running?
358 * Does Windows handle that? */
359 if (MSACM_pFirstACMDriverID) return;
360
361 lRet = RegOpenKeyExW(HKEY_LOCAL_MACHINE, drvkey, 0, KEY_QUERY_VALUE, &hKey);
362 if (lRet == ERROR_SUCCESS) {
363 RegQueryInfoKeyW( hKey, 0, 0, 0, &cnt, 0, 0, 0, 0, 0, 0, 0);
364 for (i = 0; i < cnt; i++) {
365 bufLen = sizeof(buf) / sizeof(buf[0]);
366 lRet = RegEnumKeyExW(hKey, i, buf, &bufLen, 0, 0, 0, &lastWrite);
367 if (lRet != ERROR_SUCCESS) continue;
368 if (strncmpiW(buf, msacmW, sizeof(msacmW)/sizeof(msacmW[0]))) continue;
369 if (!(name = strchrW(buf, '='))) continue;
370 *name = 0;
371 MSACM_RegisterDriver(buf, name + 1, 0);
372 }
373 RegCloseKey( hKey );
374 }
375
376 if (GetPrivateProfileSectionW(drv32, buf, sizeof(buf)/sizeof(buf[0]), sys))
377 {
378 for(s = buf; *s; s += strlenW(s) + 1)
379 {
380 if (strncmpiW(s, msacmW, sizeof(msacmW)/sizeof(msacmW[0]))) continue;
381 if (!(name = strchrW(s, '='))) continue;
382 *name = 0;
383 MSACM_RegisterDriver(s, name + 1, 0);
384 *name = '=';
385 }
386 }
387 MSACM_ReorderDriversByPriority();
388 MSACM_RegisterDriver(msacm32, msacm32, 0);
389 }
390
391 /***********************************************************************
392 * MSACM_RegisterNotificationWindow()
393 */
394 PWINE_ACMNOTIFYWND MSACM_RegisterNotificationWindow(HWND hNotifyWnd, DWORD dwNotifyMsg)
395 {
396 PWINE_ACMNOTIFYWND panwnd;
397
398 TRACE("(%p,0x%08x)\n", hNotifyWnd, dwNotifyMsg);
399
400 panwnd = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMNOTIFYWND));
401 panwnd->obj.dwType = WINE_ACMOBJ_NOTIFYWND;
402 panwnd->obj.pACMDriverID = 0;
403 panwnd->hNotifyWnd = hNotifyWnd;
404 panwnd->dwNotifyMsg = dwNotifyMsg;
405 panwnd->fdwSupport = 0;
406
407 panwnd->pNextACMNotifyWnd = NULL;
408 panwnd->pPrevACMNotifyWnd = MSACM_pLastACMNotifyWnd;
409 if (MSACM_pLastACMNotifyWnd)
410 MSACM_pLastACMNotifyWnd->pNextACMNotifyWnd = panwnd;
411 MSACM_pLastACMNotifyWnd = panwnd;
412 if (!MSACM_pFirstACMNotifyWnd)
413 MSACM_pFirstACMNotifyWnd = panwnd;
414
415 return panwnd;
416 }
417
418 /***********************************************************************
419 * MSACM_BroadcastNotification()
420 */
421 void MSACM_BroadcastNotification(void)
422 {
423 if (MSACM_suspendBroadcastCount <= 0) {
424 PWINE_ACMNOTIFYWND panwnd;
425
426 for (panwnd = MSACM_pFirstACMNotifyWnd; panwnd; panwnd = panwnd->pNextACMNotifyWnd)
427 if (!(panwnd->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED))
428 SendMessageW(panwnd->hNotifyWnd, panwnd->dwNotifyMsg, 0, 0);
429 } else {
430 MSACM_pendingBroadcast = TRUE;
431 }
432 }
433
434 /***********************************************************************
435 * MSACM_DisableNotifications()
436 */
437 void MSACM_DisableNotifications(void)
438 {
439 MSACM_suspendBroadcastCount++;
440 }
441
442 /***********************************************************************
443 * MSACM_EnableNotifications()
444 */
445 void MSACM_EnableNotifications(void)
446 {
447 if (MSACM_suspendBroadcastCount > 0) {
448 MSACM_suspendBroadcastCount--;
449 if (MSACM_suspendBroadcastCount == 0 && MSACM_pendingBroadcast) {
450 MSACM_pendingBroadcast = FALSE;
451 MSACM_BroadcastNotification();
452 }
453 }
454 }
455
456 /***********************************************************************
457 * MSACM_UnRegisterNotificationWindow()
458 */
459 PWINE_ACMNOTIFYWND MSACM_UnRegisterNotificationWindow(PWINE_ACMNOTIFYWND panwnd)
460 {
461 PWINE_ACMNOTIFYWND p;
462
463 for (p = MSACM_pFirstACMNotifyWnd; p; p = p->pNextACMNotifyWnd) {
464 if (p == panwnd) {
465 PWINE_ACMNOTIFYWND pNext = p->pNextACMNotifyWnd;
466
467 if (p->pPrevACMNotifyWnd) p->pPrevACMNotifyWnd->pNextACMNotifyWnd = p->pNextACMNotifyWnd;
468 if (p->pNextACMNotifyWnd) p->pNextACMNotifyWnd->pPrevACMNotifyWnd = p->pPrevACMNotifyWnd;
469 if (MSACM_pFirstACMNotifyWnd == p) MSACM_pFirstACMNotifyWnd = p->pNextACMNotifyWnd;
470 if (MSACM_pLastACMNotifyWnd == p) MSACM_pLastACMNotifyWnd = p->pPrevACMNotifyWnd;
471 HeapFree(MSACM_hHeap, 0, p);
472
473 return pNext;
474 }
475 }
476 return NULL;
477 }
478
479 /***********************************************************************
480 * MSACM_RePositionDriver()
481 */
482 void MSACM_RePositionDriver(PWINE_ACMDRIVERID padid, DWORD dwPriority)
483 {
484 PWINE_ACMDRIVERID pTargetPosition = NULL;
485
486 /* Remove selected driver from linked list */
487 if (MSACM_pFirstACMDriverID == padid) {
488 MSACM_pFirstACMDriverID = padid->pNextACMDriverID;
489 }
490 if (MSACM_pLastACMDriverID == padid) {
491 MSACM_pLastACMDriverID = padid->pPrevACMDriverID;
492 }
493 if (padid->pPrevACMDriverID != NULL) {
494 padid->pPrevACMDriverID->pNextACMDriverID = padid->pNextACMDriverID;
495 }
496 if (padid->pNextACMDriverID != NULL) {
497 padid->pNextACMDriverID->pPrevACMDriverID = padid->pPrevACMDriverID;
498 }
499
500 /* Look up position where selected driver should be */
501 if (dwPriority == 1) {
502 pTargetPosition = padid->pPrevACMDriverID;
503 while (pTargetPosition->pPrevACMDriverID != NULL &&
504 !(pTargetPosition->pPrevACMDriverID->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_LOCAL)) {
505 pTargetPosition = pTargetPosition->pPrevACMDriverID;
506 }
507 } else if (dwPriority == -1) {
508 pTargetPosition = padid->pNextACMDriverID;
509 while (pTargetPosition->pNextACMDriverID != NULL) {
510 pTargetPosition = pTargetPosition->pNextACMDriverID;
511 }
512 }
513
514 /* Place selected driver in selected position */
515 padid->pPrevACMDriverID = pTargetPosition->pPrevACMDriverID;
516 padid->pNextACMDriverID = pTargetPosition;
517 if (padid->pPrevACMDriverID != NULL) {
518 padid->pPrevACMDriverID->pNextACMDriverID = padid;
519 } else {
520 MSACM_pFirstACMDriverID = padid;
521 }
522 if (padid->pNextACMDriverID != NULL) {
523 padid->pNextACMDriverID->pPrevACMDriverID = padid;
524 } else {
525 MSACM_pLastACMDriverID = padid;
526 }
527 }
528
529 /***********************************************************************
530 * MSACM_ReorderDriversByPriority()
531 * Reorders all drivers based on the priority list indicated by the registry key:
532 * HKCU\\Software\\Microsoft\\Multimedia\\Audio Compression Manager\\Priority v4.00
533 */
534 static void MSACM_ReorderDriversByPriority(void)
535 {
536 PWINE_ACMDRIVERID padid;
537 unsigned int iNumDrivers;
538 PWINE_ACMDRIVERID * driverList = NULL;
539 HKEY hPriorityKey = NULL;
540
541 TRACE("\n");
542
543 /* Count drivers && alloc corresponding memory for list */
544 iNumDrivers = 0;
545 for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) iNumDrivers++;
546 if (iNumDrivers > 1)
547 {
548 LONG lError;
549 static const WCHAR basePriorityKey[] = {
550 'S','o','f','t','w','a','r','e','\\',
551 'M','i','c','r','o','s','o','f','t','\\',
552 'M','u','l','t','i','m','e','d','i','a','\\',
553 'A','u','d','i','o',' ','C','o','m','p','r','e','s','s','i','o','n',' ','M','a','n','a','g','e','r','\\',
554 'P','r','i','o','r','i','t','y',' ','v','4','.','0','0','\0'
555 };
556 unsigned int i;
557 LONG lBufferLength;
558 WCHAR szBuffer[256];
559
560 driverList = HeapAlloc(MSACM_hHeap, 0, iNumDrivers * sizeof(PWINE_ACMDRIVERID));
561 if (!driverList)
562 {
563 ERR("out of memory\n");
564 goto errCleanUp;
565 }
566
567 lError = RegOpenKeyW(HKEY_CURRENT_USER, basePriorityKey, &hPriorityKey);
568 if (lError != ERROR_SUCCESS) {
569 TRACE("RegOpenKeyW failed, possibly key does not exist yet\n");
570 hPriorityKey = NULL;
571 goto errCleanUp;
572 }
573
574 /* Copy drivers into list to simplify linked list modification */
575 for (i = 0, padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID, i++)
576 {
577 driverList[i] = padid;
578 }
579
580 /* Query each of the priorities in turn. Alias key is in lowercase.
581 The general form of the priority record is the following:
582 "PriorityN" --> "1, msacm.driveralias"
583 where N is an integer, and the value is a string of the driver
584 alias, prefixed by "1, " for an enabled driver, or "0, " for a
585 disabled driver.
586 */
587 for (i = 0; i < iNumDrivers; i++)
588 {
589 static const WCHAR priorityTmpl[] = {'P','r','i','o','r','i','t','y','%','l','d','\0'};
590 WCHAR szSubKey[17];
591 unsigned int iTargetPosition;
592 unsigned int iCurrentPosition;
593 WCHAR * pAlias;
594 static const WCHAR sPrefix[] = {'m','s','a','c','m','.','\0'};
595
596 /* Build expected entry name */
597 snprintfW(szSubKey, 17, priorityTmpl, i + 1);
598 lBufferLength = sizeof(szBuffer);
599 lError = RegQueryValueExW(hPriorityKey, szSubKey, NULL, NULL, (LPBYTE)szBuffer, (LPDWORD)&lBufferLength);
600 if (lError != ERROR_SUCCESS) continue;
601
602 /* Recovered driver alias should be at this position */
603 iTargetPosition = i;
604
605 /* Locate driver alias in driver list */
606 pAlias = strstrW(szBuffer, sPrefix);
607 if (pAlias == NULL) continue;
608
609 for (iCurrentPosition = 0; iCurrentPosition < iNumDrivers; iCurrentPosition++) {
610 if (strcmpiW(driverList[iCurrentPosition]->pszDriverAlias, pAlias) == 0)
611 break;
612 }
613 if (iCurrentPosition < iNumDrivers && iTargetPosition != iCurrentPosition) {
614 padid = driverList[iTargetPosition];
615 driverList[iTargetPosition] = driverList[iCurrentPosition];
616 driverList[iCurrentPosition] = padid;
617
618 /* Locate enabled status */
619 if (szBuffer[0] == '1') {
620 driverList[iTargetPosition]->fdwSupport &= ~ACMDRIVERDETAILS_SUPPORTF_DISABLED;
621 } else if (szBuffer[0] == '0') {
622 driverList[iTargetPosition]->fdwSupport |= ACMDRIVERDETAILS_SUPPORTF_DISABLED;
623 }
624 }
625 }
626
627 /* Re-assign pointers so that linked list traverses the ordered array */
628 for (i = 0; i < iNumDrivers; i++) {
629 driverList[i]->pPrevACMDriverID = (i > 0) ? driverList[i - 1] : NULL;
630 driverList[i]->pNextACMDriverID = (i < iNumDrivers - 1) ? driverList[i + 1] : NULL;
631 }
632 MSACM_pFirstACMDriverID = driverList[0];
633 MSACM_pLastACMDriverID = driverList[iNumDrivers - 1];
634 }
635
636 errCleanUp:
637 if (hPriorityKey != NULL) RegCloseKey(hPriorityKey);
638 HeapFree(MSACM_hHeap, 0, driverList);
639 }
640
641 /***********************************************************************
642 * MSACM_WriteCurrentPriorities()
643 * Writes out current order of driver priorities to registry key:
644 * HKCU\\Software\\Microsoft\\Multimedia\\Audio Compression Manager\\Priority v4.00
645 */
646 void MSACM_WriteCurrentPriorities(void)
647 {
648 LONG lError;
649 HKEY hPriorityKey;
650 static const WCHAR basePriorityKey[] = {
651 'S','o','f','t','w','a','r','e','\\',
652 'M','i','c','r','o','s','o','f','t','\\',
653 'M','u','l','t','i','m','e','d','i','a','\\',
654 'A','u','d','i','o',' ','C','o','m','p','r','e','s','s','i','o','n',' ','M','a','n','a','g','e','r','\\',
655 'P','r','i','o','r','i','t','y',' ','v','4','.','0','0','\0'
656 };
657 PWINE_ACMDRIVERID padid;
658 DWORD dwPriorityCounter;
659 static const WCHAR priorityTmpl[] = {'P','r','i','o','r','i','t','y','%','l','d','\0'};
660 static const WCHAR valueTmpl[] = {'%','c',',',' ','%','s','\0'};
661 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'};
662 WCHAR szSubKey[17];
663 WCHAR szBuffer[256];
664
665 /* Delete ACM priority key and create it anew */
666 lError = RegDeleteKeyW(HKEY_CURRENT_USER, basePriorityKey);
667 if (lError != ERROR_SUCCESS && lError != ERROR_FILE_NOT_FOUND) {
668 ERR("unable to remove current key %s (0x%08x) - priority changes won't persist past application end.\n",
669 debugstr_w(basePriorityKey), lError);
670 return;
671 }
672 lError = RegCreateKeyW(HKEY_CURRENT_USER, basePriorityKey, &hPriorityKey);
673 if (lError != ERROR_SUCCESS) {
674 ERR("unable to create key %s (0x%08x) - priority changes won't persist past application end.\n",
675 debugstr_w(basePriorityKey), lError);
676 return;
677 }
678
679 /* Write current list of priorities */
680 for (dwPriorityCounter = 0, padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
681 if (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_LOCAL) continue;
682 if (padid->pszDriverAlias == NULL) continue; /* internal PCM converter is last */
683
684 /* Build required value name */
685 dwPriorityCounter++;
686 snprintfW(szSubKey, 17, priorityTmpl, dwPriorityCounter);
687
688 /* Value has a 1 in front for enabled drivers and 0 for disabled drivers */
689 snprintfW(szBuffer, 256, valueTmpl, (padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) ? '0' : '1', padid->pszDriverAlias);
690 strlwrW(szBuffer);
691
692 lError = RegSetValueExW(hPriorityKey, szSubKey, 0, REG_SZ, (BYTE *)szBuffer, (strlenW(szBuffer) + 1) * sizeof(WCHAR));
693 if (lError != ERROR_SUCCESS) {
694 ERR("unable to write value for %s under key %s (0x%08x)\n",
695 debugstr_w(padid->pszDriverAlias), debugstr_w(basePriorityKey), lError);
696 }
697 }
698
699 /* Build required value name */
700 dwPriorityCounter++;
701 snprintfW(szSubKey, 17, priorityTmpl, dwPriorityCounter);
702
703 /* Value has a 1 in front for enabled drivers and 0 for disabled drivers */
704 snprintfW(szBuffer, 256, valueTmpl, '1', converterAlias);
705
706 lError = RegSetValueExW(hPriorityKey, szSubKey, 0, REG_SZ, (BYTE *)szBuffer, (strlenW(szBuffer) + 1) * sizeof(WCHAR));
707 if (lError != ERROR_SUCCESS) {
708 ERR("unable to write value for %s under key %s (0x%08x)\n",
709 debugstr_w(converterAlias), debugstr_w(basePriorityKey), lError);
710 }
711 RegCloseKey(hPriorityKey);
712 }
713
714 /***********************************************************************
715 * MSACM_UnregisterDriver()
716 */
717 PWINE_ACMDRIVERID MSACM_UnregisterDriver(PWINE_ACMDRIVERID p)
718 {
719 PWINE_ACMDRIVERID pNextACMDriverID;
720
721 while (p->pACMDriverList)
722 acmDriverClose((HACMDRIVER) p->pACMDriverList, 0);
723
724 HeapFree(MSACM_hHeap, 0, p->pszDriverAlias);
725 HeapFree(MSACM_hHeap, 0, p->pszFileName);
726 HeapFree(MSACM_hHeap, 0, p->aFormatTag);
727
728 if (p == MSACM_pFirstACMDriverID)
729 MSACM_pFirstACMDriverID = p->pNextACMDriverID;
730 if (p == MSACM_pLastACMDriverID)
731 MSACM_pLastACMDriverID = p->pPrevACMDriverID;
732
733 if (p->pPrevACMDriverID)
734 p->pPrevACMDriverID->pNextACMDriverID = p->pNextACMDriverID;
735 if (p->pNextACMDriverID)
736 p->pNextACMDriverID->pPrevACMDriverID = p->pPrevACMDriverID;
737
738 pNextACMDriverID = p->pNextACMDriverID;
739
740 if (p->pLocalDriver) MSACM_UnregisterLocalDriver(p->pLocalDriver);
741 HeapFree(MSACM_hHeap, 0, p);
742
743 return pNextACMDriverID;
744 }
745
746 /***********************************************************************
747 * MSACM_UnregisterAllDrivers()
748 */
749 void MSACM_UnregisterAllDrivers(void)
750 {
751 PWINE_ACMNOTIFYWND panwnd = MSACM_pFirstACMNotifyWnd;
752 PWINE_ACMDRIVERID p = MSACM_pFirstACMDriverID;
753
754 while (p) {
755 MSACM_WriteCache(p);
756 p = MSACM_UnregisterDriver(p);
757 }
758
759 while (panwnd) {
760 panwnd = MSACM_UnRegisterNotificationWindow(panwnd);
761 }
762 }
763
764 /***********************************************************************
765 * MSACM_GetObj()
766 */
767 PWINE_ACMOBJ MSACM_GetObj(HACMOBJ hObj, DWORD type)
768 {
769 PWINE_ACMOBJ pao = (PWINE_ACMOBJ)hObj;
770
771 if (pao == NULL || IsBadReadPtr(pao, sizeof(WINE_ACMOBJ)) ||
772 ((type != WINE_ACMOBJ_DONTCARE) && (type != pao->dwType)))
773 return NULL;
774 return pao;
775 }
776
777 /***********************************************************************
778 * MSACM_GetDriverID()
779 */
780 PWINE_ACMDRIVERID MSACM_GetDriverID(HACMDRIVERID hDriverID)
781 {
782 return (PWINE_ACMDRIVERID)MSACM_GetObj((HACMOBJ)hDriverID, WINE_ACMOBJ_DRIVERID);
783 }
784
785 /***********************************************************************
786 * MSACM_GetDriver()
787 */
788 PWINE_ACMDRIVER MSACM_GetDriver(HACMDRIVER hDriver)
789 {
790 return (PWINE_ACMDRIVER)MSACM_GetObj((HACMOBJ)hDriver, WINE_ACMOBJ_DRIVER);
791 }
792
793 /***********************************************************************
794 * MSACM_GetNotifyWnd()
795 */
796 PWINE_ACMNOTIFYWND MSACM_GetNotifyWnd(HACMDRIVERID hDriver)
797 {
798 return (PWINE_ACMNOTIFYWND)MSACM_GetObj((HACMOBJ)hDriver, WINE_ACMOBJ_NOTIFYWND);
799 }
800
801 /***********************************************************************
802 * MSACM_GetLocalDriver()
803 */
804 /*
805 PWINE_ACMLOCALDRIVER MSACM_GetLocalDriver(HACMDRIVER hDriver)
806 {
807 return (PWINE_ACMLOCALDRIVER)MSACM_GetObj((HACMOBJ)hDriver, WINE_ACMOBJ_LOCALDRIVER);
808 }
809 */
810 #define MSACM_DRIVER_SendMessage(PDRVRINST, msg, lParam1, lParam2) \
811 (PDRVRINST)->pLocalDriver->lpDrvProc((PDRVRINST)->dwDriverID, (HDRVR)(PDRVRINST), msg, lParam1, lParam2)
812
813 /***********************************************************************
814 * MSACM_Message()
815 */
816 MMRESULT MSACM_Message(HACMDRIVER had, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
817 {
818 PWINE_ACMDRIVER pad = MSACM_GetDriver(had);
819
820 if (!pad) return MMSYSERR_INVALHANDLE;
821 if (pad->hDrvr) return SendDriverMessage(pad->hDrvr, uMsg, lParam1, lParam2);
822 if (pad->pLocalDrvrInst) return MSACM_DRIVER_SendMessage(pad->pLocalDrvrInst, uMsg, lParam1, lParam2);
823
824 return MMSYSERR_INVALHANDLE;
825 }
826
827 PWINE_ACMLOCALDRIVER MSACM_pFirstACMLocalDriver = NULL;
828 PWINE_ACMLOCALDRIVER MSACM_pLastACMLocalDriver = NULL;
829
830 PWINE_ACMLOCALDRIVER MSACM_RegisterLocalDriver(HMODULE hModule, DRIVERPROC lpDriverProc)
831 {
832 PWINE_ACMLOCALDRIVER paldrv;
833
834 TRACE("(%p, %p)\n", hModule, lpDriverProc);
835 if (!hModule || !lpDriverProc) return NULL;
836
837 /* look up previous instance of local driver module */
838 for (paldrv = MSACM_pFirstACMLocalDriver; paldrv; paldrv = paldrv->pNextACMLocalDrv)
839 {
840 if (paldrv->hModule == hModule && paldrv->lpDrvProc == lpDriverProc) return paldrv;
841 }
842
843 paldrv = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMLOCALDRIVER));
844 paldrv->obj.dwType = WINE_ACMOBJ_LOCALDRIVER;
845 paldrv->obj.pACMDriverID = 0;
846 paldrv->hModule = hModule;
847 paldrv->lpDrvProc = lpDriverProc;
848 paldrv->pACMInstList = NULL;
849
850 paldrv->pNextACMLocalDrv = NULL;
851 paldrv->pPrevACMLocalDrv = MSACM_pLastACMLocalDriver;
852 if (MSACM_pLastACMLocalDriver)
853 MSACM_pLastACMLocalDriver->pNextACMLocalDrv = paldrv;
854 MSACM_pLastACMLocalDriver = paldrv;
855 if (!MSACM_pFirstACMLocalDriver)
856 MSACM_pFirstACMLocalDriver = paldrv;
857
858 return paldrv;
859 }
860
861 /**************************************************************************
862 * MSACM_GetNumberOfModuleRefs [internal]
863 *
864 * Returns the number of open drivers which share the same module.
865 * Inspired from implementation in dlls/winmm/driver.c
866 */
867 static unsigned MSACM_GetNumberOfModuleRefs(HMODULE hModule, DRIVERPROC lpDrvProc, WINE_ACMLOCALDRIVERINST ** found)
868 {
869 PWINE_ACMLOCALDRIVER lpDrv;
870 unsigned count = 0;
871
872 if (found) *found = NULL;
873 for (lpDrv = MSACM_pFirstACMLocalDriver; lpDrv; lpDrv = lpDrv->pNextACMLocalDrv)
874 {
875 if (lpDrv->hModule == hModule && lpDrv->lpDrvProc == lpDrvProc)
876 {
877 PWINE_ACMLOCALDRIVERINST pInst = lpDrv->pACMInstList;
878
879 while (pInst) {
880 if (found && !*found) *found = pInst;
881 count++;
882 pInst = pInst->pNextACMInst;
883 }
884 }
885 }
886 return count;
887 }
888
889 /**************************************************************************
890 * MSACM_RemoveFromList [internal]
891 *
892 * Generates all the logic to handle driver closure / deletion
893 * Removes a driver struct to the list of open drivers.
894 */
895 static BOOL MSACM_RemoveFromList(PWINE_ACMLOCALDRIVERINST lpDrv)
896 {
897 PWINE_ACMLOCALDRIVER pDriverBase = lpDrv->pLocalDriver;
898 PWINE_ACMLOCALDRIVERINST pPrevInst;
899
900 /* last of this driver in list ? */
901 if (MSACM_GetNumberOfModuleRefs(pDriverBase->hModule, pDriverBase->lpDrvProc, NULL) == 1) {
902 MSACM_DRIVER_SendMessage(lpDrv, DRV_DISABLE, 0L, 0L);
903 MSACM_DRIVER_SendMessage(lpDrv, DRV_FREE, 0L, 0L);
904 }
905
906 pPrevInst = NULL;
907 if (pDriverBase->pACMInstList != lpDrv) {
908 pPrevInst = pDriverBase->pACMInstList;
909 while (pPrevInst && pPrevInst->pNextACMInst != lpDrv)
910 pPrevInst = pPrevInst->pNextACMInst;
911 if (!pPrevInst) {
912 ERR("requested to remove invalid instance %p\n", pPrevInst);
913 return FALSE;
914 }
915 }
916 if (!pPrevInst) {
917 /* first driver instance on list */
918 pDriverBase->pACMInstList = lpDrv->pNextACMInst;
919 } else {
920 pPrevInst->pNextACMInst = lpDrv->pNextACMInst;
921 }
922 return TRUE;
923 }
924
925 /**************************************************************************
926 * MSACM_AddToList [internal]
927 *
928 * Adds a driver struct to the list of open drivers.
929 * Generates all the logic to handle driver creation / open.
930 */
931 static BOOL MSACM_AddToList(PWINE_ACMLOCALDRIVERINST lpNewDrv, LPARAM lParam2)
932 {
933 PWINE_ACMLOCALDRIVER pDriverBase = lpNewDrv->pLocalDriver;
934
935 /* first of this driver in list ? */
936 if (MSACM_GetNumberOfModuleRefs(pDriverBase->hModule, pDriverBase->lpDrvProc, NULL) == 0) {
937 if (MSACM_DRIVER_SendMessage(lpNewDrv, DRV_LOAD, 0L, 0L) != DRV_SUCCESS) {
938 FIXME("DRV_LOAD failed on driver %p\n", lpNewDrv);
939 return FALSE;
940 }
941 /* returned value is not checked */
942 MSACM_DRIVER_SendMessage(lpNewDrv, DRV_ENABLE, 0L, 0L);
943 }
944
945 lpNewDrv->pNextACMInst = NULL;
946 if (pDriverBase->pACMInstList == NULL) {
947 pDriverBase->pACMInstList = lpNewDrv;
948 } else {
949 PWINE_ACMLOCALDRIVERINST lpDrvInst = pDriverBase->pACMInstList;
950
951 while (lpDrvInst->pNextACMInst != NULL)
952 lpDrvInst = lpDrvInst->pNextACMInst;
953
954 lpDrvInst->pNextACMInst = lpNewDrv;
955 }
956
957 /* Now just open a new instance of a driver on this module */
958 lpNewDrv->dwDriverID = MSACM_DRIVER_SendMessage(lpNewDrv, DRV_OPEN, 0, lParam2);
959
960 if (lpNewDrv->dwDriverID == 0) {
961 FIXME("DRV_OPEN failed on driver %p\n", lpNewDrv);
962 MSACM_RemoveFromList(lpNewDrv);
963 return FALSE;
964 }
965 return TRUE;
966 }
967
968 PWINE_ACMLOCALDRIVERINST MSACM_OpenLocalDriver(PWINE_ACMLOCALDRIVER paldrv, LPARAM lParam2)
969 {
970 PWINE_ACMLOCALDRIVERINST pDrvInst;
971
972 pDrvInst = HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMLOCALDRIVERINST));
973 pDrvInst->pLocalDriver = paldrv;
974 pDrvInst->dwDriverID = 0;
975 pDrvInst->pNextACMInst = NULL;
976 pDrvInst->bSession = FALSE;
977
978 /* Win32 installable drivers must support a two phase opening scheme:
979 * + first open with NULL as lParam2 (session instance),
980 * + then do a second open with the real non null lParam2)
981 */
982 if (MSACM_GetNumberOfModuleRefs(paldrv->hModule, paldrv->lpDrvProc, NULL) == 0 && lParam2)
983 {
984 PWINE_ACMLOCALDRIVERINST ret;
985
986 if (!MSACM_AddToList(pDrvInst, 0L))
987 {
988 ERR("load0 failed\n");
989 goto exit;
990 }
991 ret = MSACM_OpenLocalDriver(paldrv, lParam2);
992 if (!ret)
993 {
994 MSACM_CloseLocalDriver(pDrvInst);
995 ERR("load1 failed\n");
996 goto exit;
997 }
998 pDrvInst->bSession = TRUE;
999 return ret;
1000 }
1001
1002 if (!MSACM_AddToList(pDrvInst, lParam2))
1003 {
1004 ERR("load failed\n");
1005 goto exit;
1006 }
1007
1008 TRACE("=> %p\n", pDrvInst);
1009 return pDrvInst;
1010 exit:
1011 HeapFree(MSACM_hHeap, 0, pDrvInst);
1012 return NULL;
1013 }
1014
1015 LRESULT MSACM_CloseLocalDriver(PWINE_ACMLOCALDRIVERINST paldrv)
1016 {
1017 if (MSACM_RemoveFromList(paldrv)) {
1018 PWINE_ACMLOCALDRIVERINST lpDrv0;
1019 PWINE_ACMLOCALDRIVER pDriverBase = paldrv->pLocalDriver;
1020
1021 MSACM_DRIVER_SendMessage(paldrv, DRV_CLOSE, 0, 0);
1022 paldrv->dwDriverID = 0;
1023
1024 if (paldrv->bSession)
1025 ERR("should not directly close session instance (%p)\n", paldrv);
1026
1027 /* if driver has an opened session instance, we have to close it too */
1028 if (MSACM_GetNumberOfModuleRefs(pDriverBase->hModule, pDriverBase->lpDrvProc, &lpDrv0) == 1 &&
1029 lpDrv0->bSession)
1030 {
1031 MSACM_DRIVER_SendMessage(lpDrv0, DRV_CLOSE, 0L, 0L);
1032 lpDrv0->dwDriverID = 0;
1033 MSACM_RemoveFromList(lpDrv0);
1034 HeapFree(GetProcessHeap(), 0, lpDrv0);
1035 }
1036
1037 HeapFree(MSACM_hHeap, 0, paldrv);
1038 return TRUE;
1039 }
1040 ERR("unable to close driver instance\n");
1041 return FALSE;
1042 }
1043
1044 PWINE_ACMLOCALDRIVER MSACM_UnregisterLocalDriver(PWINE_ACMLOCALDRIVER paldrv)
1045 {
1046 PWINE_ACMLOCALDRIVER pNextACMLocalDriver;
1047
1048 if (paldrv->pACMInstList) {
1049 ERR("local driver instances still present after closing all drivers - memory leak\n");
1050 return NULL;
1051 }
1052
1053 if (paldrv == MSACM_pFirstACMLocalDriver)
1054 MSACM_pFirstACMLocalDriver = paldrv->pNextACMLocalDrv;
1055 if (paldrv == MSACM_pLastACMLocalDriver)
1056 MSACM_pLastACMLocalDriver = paldrv->pPrevACMLocalDrv;
1057
1058 if (paldrv->pPrevACMLocalDrv)
1059 paldrv->pPrevACMLocalDrv->pNextACMLocalDrv = paldrv->pNextACMLocalDrv;
1060 if (paldrv->pNextACMLocalDrv)
1061 paldrv->pNextACMLocalDrv->pPrevACMLocalDrv = paldrv->pPrevACMLocalDrv;
1062
1063 pNextACMLocalDriver = paldrv->pNextACMLocalDrv;
1064
1065 HeapFree(MSACM_hHeap, 0, paldrv);
1066
1067 return pNextACMLocalDriver;
1068 }
Windows API implementation