dlls/mmdevapi/main.c

   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 "initguid.h"
  36 #include "propkeydef.h"
  37 #include "mmdeviceapi.h"
  38 #include "dshow.h"
  39 #include "dsound.h"
  40 #include "audioclient.h"
  41 #include "endpointvolume.h"
  42 #include "audiopolicy.h"
  43 #include "devpkey.h"
  44 #include "winreg.h"
  45
  46 #include "mmdevapi.h"
  47 #include "wine/debug.h"
  48 #include "wine/unicode.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(mmdevapi);
  51
  52 static HINSTANCE instance;
  53
  54 DriverFuncs drvs;
  55
  56 static const char *get_priority_string(int prio)
  57 {
  58     switch(prio){
  59     case Priority_Unavailable:
  60         return "Unavailable";
  61     case Priority_Low:
  62         return "Low";
  63     case Priority_Neutral:
  64         return "Neutral";
  65     case Priority_Preferred:
  66         return "Preferred";
  67     }
  68     return "Invalid";
  69 }
  70
  71 static BOOL load_driver(const WCHAR *name, DriverFuncs *driver)
  72 {
  73     WCHAR driver_module[264];
  74     static const WCHAR wineW[] = {'w','i','n','e',0};
  75     static const WCHAR dotdrvW[] = {'.','d','r','v',0};
  76
  77     lstrcpyW(driver_module, wineW);
  78     lstrcatW(driver_module, name);
  79     lstrcatW(driver_module, dotdrvW);
  80
  81     TRACE("Attempting to load %s\n", wine_dbgstr_w(driver_module));
  82
  83     driver->module = LoadLibraryW(driver_module);
  84     if(!driver->module){
  85         TRACE("Unable to load %s: %u\n", wine_dbgstr_w(driver_module),
  86                 GetLastError());
  87         return FALSE;
  88     }
  89
  90 #define LDFC(n) do { driver->p##n = (void*)GetProcAddress(driver->module, #n);\
  91         if(!driver->p##n) { FreeLibrary(driver->module); return FALSE; } } while(0)
  92     LDFC(GetPriority);
  93     LDFC(GetEndpointIDs);
  94     LDFC(GetAudioEndpoint);
  95     LDFC(GetAudioSessionManager);
  96 #undef LDFC
  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
 107 static BOOL init_driver(void)
 108 {
 109     static const WCHAR drv_key[] = {'S','o','f','t','w','a','r','e','\\',
 110         'W','i','n','e','\\','D','r','i','v','e','r','s',0};
 111     static const WCHAR drv_value[] = {'A','u','d','i','o',0};
 112
 113     static WCHAR default_list[] = {'a','l','s','a',',','o','s','s',',',
 114         'c','o','r','e','a','u','d','i','o',0};
 115
 116     DriverFuncs driver;
 117     HKEY key;
 118     WCHAR reg_list[256], *p, *next, *driver_list = default_list;
 119
 120     if(drvs.module)
 121         return TRUE;
 122
 123     if(RegOpenKeyW(HKEY_CURRENT_USER, drv_key, &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 ? TRUE : FALSE;
 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             MMDevEnum_Free();
 180             break;
 181     }
 182
 183     return TRUE;
 184 }
 185
 186 HRESULT WINAPI DllCanUnloadNow(void)
 187 {
 188     return S_FALSE;
 189 }
 190
 191 typedef HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
 192
 193 typedef struct {
 194     IClassFactory IClassFactory_iface;
 195     REFCLSID rclsid;
 196     FnCreateInstance pfnCreateInstance;
 197 } IClassFactoryImpl;
 198
 199 static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
 200 {
 201     return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
 202 }
 203
 204 static HRESULT WINAPI
 205 MMCF_QueryInterface(LPCLASSFACTORY iface, REFIID riid, LPVOID *ppobj)
 206 {
 207     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 208     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
 209     if (ppobj == NULL)
 210         return E_POINTER;
 211     if (IsEqualIID(riid, &IID_IUnknown) ||
 212         IsEqualIID(riid, &IID_IClassFactory))
 213     {
 214         *ppobj = iface;
 215         IUnknown_AddRef(iface);
 216         return S_OK;
 217     }
 218     *ppobj = NULL;
 219     return E_NOINTERFACE;
 220 }
 221
 222 static ULONG WINAPI MMCF_AddRef(LPCLASSFACTORY iface)
 223 {
 224     return 2;
 225 }
 226
 227 static ULONG WINAPI MMCF_Release(LPCLASSFACTORY iface)
 228 {
 229     /* static class, won't be freed */
 230     return 1;
 231 }
 232
 233 static HRESULT WINAPI MMCF_CreateInstance(
 234     LPCLASSFACTORY iface,
 235     LPUNKNOWN pOuter,
 236     REFIID riid,
 237     LPVOID *ppobj)
 238 {
 239     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 240     TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
 241
 242     if (pOuter)
 243         return CLASS_E_NOAGGREGATION;
 244
 245     if (ppobj == NULL) {
 246         WARN("invalid parameter\n");
 247         return E_POINTER;
 248     }
 249     *ppobj = NULL;
 250     return This->pfnCreateInstance(riid, ppobj);
 251 }
 252
 253 static HRESULT WINAPI MMCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
 254 {
 255     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 256     FIXME("(%p, %d) stub!\n", This, dolock);
 257     return S_OK;
 258 }
 259
 260 static const IClassFactoryVtbl MMCF_Vtbl = {
 261     MMCF_QueryInterface,
 262     MMCF_AddRef,
 263     MMCF_Release,
 264     MMCF_CreateInstance,
 265     MMCF_LockServer
 266 };
 267
 268 static IClassFactoryImpl MMDEVAPI_CF[] = {
 269     { { &MMCF_Vtbl }, &CLSID_MMDeviceEnumerator, (FnCreateInstance)MMDevEnum_Create }
 270 };
 271
 272 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 273 {
 274     int i = 0;
 275     TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 276
 277     if(!init_driver()){
 278         ERR("Driver initialization failed\n");
 279         return E_FAIL;
 280     }
 281
 282     if (ppv == NULL) {
 283         WARN("invalid parameter\n");
 284         return E_INVALIDARG;
 285     }
 286
 287     *ppv = NULL;
 288
 289     if (!IsEqualIID(riid, &IID_IClassFactory) &&
 290         !IsEqualIID(riid, &IID_IUnknown)) {
 291         WARN("no interface for %s\n", debugstr_guid(riid));
 292         return E_NOINTERFACE;
 293     }
 294
 295     for (i = 0; i < sizeof(MMDEVAPI_CF)/sizeof(MMDEVAPI_CF[0]); ++i)
 296     {
 297         if (IsEqualGUID(rclsid, MMDEVAPI_CF[i].rclsid)) {
 298             IUnknown_AddRef(&MMDEVAPI_CF[i].IClassFactory_iface);
 299             *ppv = &MMDEVAPI_CF[i];
 300             return S_OK;
 301         }
 302         i++;
 303     }
 304
 305     WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
 306          debugstr_guid(riid), ppv);
 307     return CLASS_E_CLASSNOTAVAILABLE;
 308 }
 309
 310 /***********************************************************************
 311  *              DllRegisterServer (MMDEVAPI.@)
 312  */
 313 HRESULT WINAPI DllRegisterServer(void)
 314 {
 315     return __wine_register_resources( instance );
 316 }
 317
 318 /***********************************************************************
 319  *              DllUnregisterServer (MMDEVAPI.@)
 320  */
 321 HRESULT WINAPI DllUnregisterServer(void)
 322 {
 323     return __wine_unregister_resources( instance );
 324 }