huwcampbell.com
Reactos
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 <stdarg.h>
21
22#define COBJMACROS
23#include "windef.h"
24#include "winbase.h"
25#include "wingdi.h"
26
27#include "ole2.h"
28#include "olectl.h"
29#include "rpcproxy.h"
30#include "propsys.h"
31#include "propkeydef.h"
32#include "mmdeviceapi.h"
33#include "mmsystem.h"
34#include "dsound.h"
35#include "audioclient.h"
36#include "endpointvolume.h"
37#include "audiopolicy.h"
38#include "devpkey.h"
39#include "winreg.h"
40
41#include "mmdevapi.h"
42#include "wine/debug.h"
43
44WINE_DEFAULT_DEBUG_CHANNEL(mmdevapi);
45
46static HINSTANCE instance;
47
48DriverFuncs drvs;
49
50const WCHAR drv_keyW[] = {'S','o','f','t','w','a','r','e','\\',
51 'W','i','n','e','\\','D','r','i','v','e','r','s',0};
52
53static const char *get_priority_string(int prio)
54{
55 switch(prio){
56 case Priority_Unavailable:
57 return "Unavailable";
58 case Priority_Low:
59 return "Low";
60 case Priority_Neutral:
61 return "Neutral";
62 case Priority_Preferred:
63 return "Preferred";
64 }
65 return "Invalid";
66}
67
68static BOOL load_driver(const WCHAR *name, DriverFuncs *driver)
69{
70 WCHAR driver_module[264];
71 static const WCHAR wineW[] = {'w','i','n','e',0};
72 static const WCHAR dotdrvW[] = {'.','d','r','v',0};
73
74 lstrcpyW(driver_module, wineW);
75 lstrcatW(driver_module, name);
76 lstrcatW(driver_module, dotdrvW);
77
78 TRACE("Attempting to load %s\n", wine_dbgstr_w(driver_module));
79
80 driver->module = LoadLibraryW(driver_module);
81 if(!driver->module){
82 TRACE("Unable to load %s: %u\n", wine_dbgstr_w(driver_module),
83 GetLastError());
84 return FALSE;
85 }
86
87#define LDFC(n) do { driver->p##n = (void*)GetProcAddress(driver->module, #n);\
88 if(!driver->p##n) { FreeLibrary(driver->module); return FALSE; } } while(0)
89 LDFC(GetPriority);
90 LDFC(GetEndpointIDs);
91 LDFC(GetAudioEndpoint);
92 LDFC(GetAudioSessionManager);
93#undef LDFC
94
95 /* optional - do not fail if not found */
96 driver->pGetPropValue = (void*)GetProcAddress(driver->module, "GetPropValue");
97
98 driver->priority = driver->pGetPriority();
99 lstrcpyW(driver->module_name, driver_module);
100
101 TRACE("Successfully loaded %s with priority %s\n",
102 wine_dbgstr_w(driver_module), get_priority_string(driver->priority));
103
104 return TRUE;
105}
106
107static BOOL WINAPI init_driver(INIT_ONCE *once, void *param, void **context)
108{
109 static const WCHAR drv_value[] = {'A','u','d','i','o',0};
110
111 static WCHAR default_list[] = {'p','u','l','s','e',',','a','l','s','a',',','o','s','s',',',
112 'c','o','r','e','a','u','d','i','o',',','a','n','d','r','o','i','d',0};
113
114 DriverFuncs driver;
115 HKEY key;
116 WCHAR reg_list[256], *p, *next, *driver_list = default_list;
117
118 if(RegOpenKeyW(HKEY_CURRENT_USER, drv_keyW, &key) == ERROR_SUCCESS){
119 DWORD size = sizeof(reg_list);
120
121 if(RegQueryValueExW(key, drv_value, 0, NULL, (BYTE*)reg_list,
122 &size) == ERROR_SUCCESS){
123 if(reg_list[0] == '\0'){
124 TRACE("User explicitly chose no driver\n");
125 RegCloseKey(key);
126 return TRUE;
127 }
128
129 driver_list = reg_list;
130 }
131
132 RegCloseKey(key);
133 }
134
135 TRACE("Loading driver list %s\n", wine_dbgstr_w(driver_list));
136 for(next = p = driver_list; next; p = next + 1){
137 next = wcschr(p, ',');
138 if(next)
139 *next = '\0';
140
141 driver.priority = Priority_Unavailable;
142 if(load_driver(p, &driver)){
143 if(driver.priority == Priority_Unavailable)
144 FreeLibrary(driver.module);
145 else if(!drvs.module || driver.priority > drvs.priority){
146 TRACE("Selecting driver %s with priority %s\n",
147 wine_dbgstr_w(p), get_priority_string(driver.priority));
148 if(drvs.module)
149 FreeLibrary(drvs.module);
150 drvs = driver;
151 }else
152 FreeLibrary(driver.module);
153 }else
154 TRACE("Failed to load driver %s\n", wine_dbgstr_w(p));
155
156 if(next)
157 *next = ',';
158 }
159
160 return drvs.module != 0;
161}
162
163BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
164{
165 TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);
166
167 switch (fdwReason)
168 {
169 case DLL_PROCESS_ATTACH:
170 instance = hinstDLL;
171 DisableThreadLibraryCalls(hinstDLL);
172 break;
173 case DLL_PROCESS_DETACH:
174 if(lpvReserved)
175 break;
176 MMDevEnum_Free();
177 break;
178 }
179
180 return TRUE;
181}
182
183HRESULT WINAPI DllCanUnloadNow(void)
184{
185 return S_FALSE;
186}
187
188typedef HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
189
190typedef struct {
191 IClassFactory IClassFactory_iface;
192 REFCLSID rclsid;
193 FnCreateInstance pfnCreateInstance;
194} IClassFactoryImpl;
195
196static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
197{
198 return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
199}
200
201static HRESULT WINAPI
202MMCF_QueryInterface(IClassFactory *iface, REFIID riid, void **ppobj)
203{
204 IClassFactoryImpl *This = impl_from_IClassFactory(iface);
205 TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
206 if (ppobj == NULL)
207 return E_POINTER;
208 if (IsEqualIID(riid, &IID_IUnknown) ||
209 IsEqualIID(riid, &IID_IClassFactory))
210 {
211 *ppobj = iface;
212 IClassFactory_AddRef(iface);
213 return S_OK;
214 }
215 *ppobj = NULL;
216 return E_NOINTERFACE;
217}
218
219static ULONG WINAPI MMCF_AddRef(LPCLASSFACTORY iface)
220{
221 return 2;
222}
223
224static ULONG WINAPI MMCF_Release(LPCLASSFACTORY iface)
225{
226 /* static class, won't be freed */
227 return 1;
228}
229
230static HRESULT WINAPI MMCF_CreateInstance(
231 LPCLASSFACTORY iface,
232 LPUNKNOWN pOuter,
233 REFIID riid,
234 LPVOID *ppobj)
235{
236 IClassFactoryImpl *This = impl_from_IClassFactory(iface);
237 TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
238
239 if (pOuter)
240 return CLASS_E_NOAGGREGATION;
241
242 if (ppobj == NULL) {
243 WARN("invalid parameter\n");
244 return E_POINTER;
245 }
246 *ppobj = NULL;
247 return This->pfnCreateInstance(riid, ppobj);
248}
249
250static HRESULT WINAPI MMCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
251{
252 IClassFactoryImpl *This = impl_from_IClassFactory(iface);
253 FIXME("(%p, %d) stub!\n", This, dolock);
254 return S_OK;
255}
256
257static const IClassFactoryVtbl MMCF_Vtbl = {
258 MMCF_QueryInterface,
259 MMCF_AddRef,
260 MMCF_Release,
261 MMCF_CreateInstance,
262 MMCF_LockServer
263};
264
265static IClassFactoryImpl MMDEVAPI_CF[] = {
266 { { &MMCF_Vtbl }, &CLSID_MMDeviceEnumerator, (FnCreateInstance)MMDevEnum_Create }
267};
268
269HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
270{
271 static INIT_ONCE init_once = INIT_ONCE_STATIC_INIT;
272 unsigned int i = 0;
273 TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
274
275 if(!InitOnceExecuteOnce(&init_once, init_driver, NULL, NULL)) {
276 ERR("Driver initialization failed\n");
277 return E_FAIL;
278 }
279
280 if (ppv == NULL) {
281 WARN("invalid parameter\n");
282 return E_INVALIDARG;
283 }
284
285 *ppv = NULL;
286
287 if (!IsEqualIID(riid, &IID_IClassFactory) &&
288 !IsEqualIID(riid, &IID_IUnknown)) {
289 WARN("no interface for %s\n", debugstr_guid(riid));
290 return E_NOINTERFACE;
291 }
292
293 for (i = 0; i < ARRAY_SIZE(MMDEVAPI_CF); ++i)
294 {
295 if (IsEqualGUID(rclsid, MMDEVAPI_CF[i].rclsid)) {
296 IClassFactory_AddRef(&MMDEVAPI_CF[i].IClassFactory_iface);
297 *ppv = &MMDEVAPI_CF[i];
298 return S_OK;
299 }
300 }
301
302 WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
303 debugstr_guid(riid), ppv);
304 return CLASS_E_CLASSNOTAVAILABLE;
305}
306
307/***********************************************************************
308 * DllRegisterServer (MMDEVAPI.@)
309 */
310HRESULT WINAPI DllRegisterServer(void)
311{
312 return __wine_register_resources( instance );
313}
314
315/***********************************************************************
316 * DllUnregisterServer (MMDEVAPI.@)
317 */
318HRESULT WINAPI DllUnregisterServer(void)
319{
320 return __wine_unregister_resources( instance );
321}