xref: /reactos/dll/win32/mmdevapi/main.c (revision 19b18ce2) 
1 /*
2  * Copyright 2009 Maarten Lankhorst
3  * Copyright 2011 Andrew Eikum for CodeWeavers
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
18  */
19 
20 #include "config.h"
21 #include "wine/port.h"
22 
23 #include <stdarg.h>
24 
25 #define COBJMACROS
26 #include "windef.h"
27 #include "winbase.h"
28 #include "wingdi.h"
29 #include "wine/library.h"
30 
31 #include "ole2.h"
32 #include "olectl.h"
33 #include "rpcproxy.h"
34 #include "propsys.h"
35 #include "propkeydef.h"
36 #include "mmdeviceapi.h"
37 #include "mmsystem.h"
38 #include "dsound.h"
39 #include "audioclient.h"
40 #include "endpointvolume.h"
41 #include "audiopolicy.h"
42 #include "devpkey.h"
43 #include "winreg.h"
44 
45 #include "mmdevapi.h"
46 #include "wine/debug.h"
47 #include "wine/unicode.h"
48 
49 WINE_DEFAULT_DEBUG_CHANNEL(mmdevapi);
50 
51 static HINSTANCE instance;
52 
53 DriverFuncs drvs;
54 
55 const WCHAR drv_keyW[] = {'S','o','f','t','w','a','r','e','\\',
56     'W','i','n','e','\\','D','r','i','v','e','r','s',0};
57 
58 static const char *get_priority_string(int prio)
59 {
60     switch(prio){
61     case Priority_Unavailable:
62         return "Unavailable";
63     case Priority_Low:
64         return "Low";
65     case Priority_Neutral:
66         return "Neutral";
67     case Priority_Preferred:
68         return "Preferred";
69     }
70     return "Invalid";
71 }
72 
73 static BOOL load_driver(const WCHAR *name, DriverFuncs *driver)
74 {
75     WCHAR driver_module[264];
76     static const WCHAR wineW[] = {'w','i','n','e',0};
77     static const WCHAR dotdrvW[] = {'.','d','r','v',0};
78 
79     lstrcpyW(driver_module, wineW);
80     lstrcatW(driver_module, name);
81     lstrcatW(driver_module, dotdrvW);
82 
83     TRACE("Attempting to load %s\n", wine_dbgstr_w(driver_module));
84 
85     driver->module = LoadLibraryW(driver_module);
86     if(!driver->module){
87         TRACE("Unable to load %s: %u\n", wine_dbgstr_w(driver_module),
88                 GetLastError());
89         return FALSE;
90     }
91 
92 #define LDFC(n) do { driver->p##n = (void*)GetProcAddress(driver->module, #n);\
93         if(!driver->p##n) { FreeLibrary(driver->module); return FALSE; } } while(0)
94     LDFC(GetPriority);
95     LDFC(GetEndpointIDs);
96     LDFC(GetAudioEndpoint);
97     LDFC(GetAudioSessionManager);
98 #undef LDFC
99 
100     /* optional - do not fail if not found */
101     driver->pGetPropValue = (void*)GetProcAddress(driver->module, "GetPropValue");
102 
103     driver->priority = driver->pGetPriority();
104     lstrcpyW(driver->module_name, driver_module);
105 
106     TRACE("Successfully loaded %s with priority %s\n",
107             wine_dbgstr_w(driver_module), get_priority_string(driver->priority));
108 
109     return TRUE;
110 }
111 
112 static BOOL WINAPI init_driver(INIT_ONCE *once, void *param, void **context)
113 {
114     static const WCHAR drv_value[] = {'A','u','d','i','o',0};
115 
116     static WCHAR default_list[] = {'p','u','l','s','e',',','a','l','s','a',',','o','s','s',',',
117         'c','o','r','e','a','u','d','i','o',',','a','n','d','r','o','i','d',0};
118 
119     DriverFuncs driver;
120     HKEY key;
121     WCHAR reg_list[256], *p, *next, *driver_list = default_list;
122 
123     if(RegOpenKeyW(HKEY_CURRENT_USER, drv_keyW, &key) == ERROR_SUCCESS){
124         DWORD size = sizeof(reg_list);
125 
126         if(RegQueryValueExW(key, drv_value, 0, NULL, (BYTE*)reg_list,
127                     &size) == ERROR_SUCCESS){
128             if(reg_list[0] == '\0'){
129                 TRACE("User explicitly chose no driver\n");
130                 RegCloseKey(key);
131                 return TRUE;
132             }
133 
134             driver_list = reg_list;
135         }
136 
137         RegCloseKey(key);
138     }
139 
140     TRACE("Loading driver list %s\n", wine_dbgstr_w(driver_list));
141     for(next = p = driver_list; next; p = next + 1){
142         next = strchrW(p, ',');
143         if(next)
144             *next = '\0';
145 
146         driver.priority = Priority_Unavailable;
147         if(load_driver(p, &driver)){
148             if(driver.priority == Priority_Unavailable)
149                 FreeLibrary(driver.module);
150             else if(!drvs.module || driver.priority > drvs.priority){
151                 TRACE("Selecting driver %s with priority %s\n",
152                         wine_dbgstr_w(p), get_priority_string(driver.priority));
153                 if(drvs.module)
154                     FreeLibrary(drvs.module);
155                 drvs = driver;
156             }else
157                 FreeLibrary(driver.module);
158         }else
159             TRACE("Failed to load driver %s\n", wine_dbgstr_w(p));
160 
161         if(next)
162             *next = ',';
163     }
164 
165     return drvs.module != 0;
166 }
167 
168 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
169 {
170     TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);
171 
172     switch (fdwReason)
173     {
174         case DLL_PROCESS_ATTACH:
175             instance = hinstDLL;
176             DisableThreadLibraryCalls(hinstDLL);
177             break;
178         case DLL_PROCESS_DETACH:
179             if(lpvReserved)
180                 break;
181             MMDevEnum_Free();
182             break;
183     }
184 
185     return TRUE;
186 }
187 
188 HRESULT WINAPI DllCanUnloadNow(void)
189 {
190     return S_FALSE;
191 }
192 
193 typedef HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
194 
195 typedef struct {
196     IClassFactory IClassFactory_iface;
197     REFCLSID rclsid;
198     FnCreateInstance pfnCreateInstance;
199 } IClassFactoryImpl;
200 
201 static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
202 {
203     return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
204 }
205 
206 static HRESULT WINAPI
207 MMCF_QueryInterface(IClassFactory *iface, REFIID riid, void **ppobj)
208 {
209     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
210     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
211     if (ppobj == NULL)
212         return E_POINTER;
213     if (IsEqualIID(riid, &IID_IUnknown) ||
214         IsEqualIID(riid, &IID_IClassFactory))
215     {
216         *ppobj = iface;
217         IClassFactory_AddRef(iface);
218         return S_OK;
219     }
220     *ppobj = NULL;
221     return E_NOINTERFACE;
222 }
223 
224 static ULONG WINAPI MMCF_AddRef(LPCLASSFACTORY iface)
225 {
226     return 2;
227 }
228 
229 static ULONG WINAPI MMCF_Release(LPCLASSFACTORY iface)
230 {
231     /* static class, won't be freed */
232     return 1;
233 }
234 
235 static HRESULT WINAPI MMCF_CreateInstance(
236     LPCLASSFACTORY iface,
237     LPUNKNOWN pOuter,
238     REFIID riid,
239     LPVOID *ppobj)
240 {
241     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
242     TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
243 
244     if (pOuter)
245         return CLASS_E_NOAGGREGATION;
246 
247     if (ppobj == NULL) {
248         WARN("invalid parameter\n");
249         return E_POINTER;
250     }
251     *ppobj = NULL;
252     return This->pfnCreateInstance(riid, ppobj);
253 }
254 
255 static HRESULT WINAPI MMCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
256 {
257     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
258     FIXME("(%p, %d) stub!\n", This, dolock);
259     return S_OK;
260 }
261 
262 static const IClassFactoryVtbl MMCF_Vtbl = {
263     MMCF_QueryInterface,
264     MMCF_AddRef,
265     MMCF_Release,
266     MMCF_CreateInstance,
267     MMCF_LockServer
268 };
269 
270 static IClassFactoryImpl MMDEVAPI_CF[] = {
271     { { &MMCF_Vtbl }, &CLSID_MMDeviceEnumerator, (FnCreateInstance)MMDevEnum_Create }
272 };
273 
274 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
275 {
276     static INIT_ONCE init_once = INIT_ONCE_STATIC_INIT;
277     unsigned int i = 0;
278     TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
279 
280     if(!InitOnceExecuteOnce(&init_once, init_driver, NULL, NULL)) {
281         ERR("Driver initialization failed\n");
282         return E_FAIL;
283     }
284 
285     if (ppv == NULL) {
286         WARN("invalid parameter\n");
287         return E_INVALIDARG;
288     }
289 
290     *ppv = NULL;
291 
292     if (!IsEqualIID(riid, &IID_IClassFactory) &&
293         !IsEqualIID(riid, &IID_IUnknown)) {
294         WARN("no interface for %s\n", debugstr_guid(riid));
295         return E_NOINTERFACE;
296     }
297 
298     for (i = 0; i < sizeof(MMDEVAPI_CF)/sizeof(MMDEVAPI_CF[0]); ++i)
299     {
300         if (IsEqualGUID(rclsid, MMDEVAPI_CF[i].rclsid)) {
301             IClassFactory_AddRef(&MMDEVAPI_CF[i].IClassFactory_iface);
302             *ppv = &MMDEVAPI_CF[i];
303             return S_OK;
304         }
305     }
306 
307     WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
308          debugstr_guid(riid), ppv);
309     return CLASS_E_CLASSNOTAVAILABLE;
310 }
311 
312 /***********************************************************************
313  *		DllRegisterServer (MMDEVAPI.@)
314  */
315 HRESULT WINAPI DllRegisterServer(void)
316 {
317     return __wine_register_resources( instance );
318 }
319 
320 /***********************************************************************
321  *		DllUnregisterServer (MMDEVAPI.@)
322  */
323 HRESULT WINAPI DllUnregisterServer(void)
324 {
325     return __wine_unregister_resources( instance );
326 }
327