dll/win32/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 "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 < ARRAY_SIZE(MMDEVAPI_CF); ++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 }