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
  49 WINE_DEFAULT_DEBUG_CHANNEL(mmdevapi);
  50
  51 static HINSTANCE instance;
  52
  53 DriverFuncs drvs;
  54
  55 static BOOL load_driver(const WCHAR *name)
  56 {
  57     WCHAR driver_module[264];
  58     static const WCHAR wineW[] = {'w','i','n','e',0};
  59     static const WCHAR dotdrvW[] = {'.','d','r','v',0};
  60
  61     lstrcpyW(driver_module, wineW);
  62     lstrcatW(driver_module, name);
  63     lstrcatW(driver_module, dotdrvW);
  64
  65     TRACE("Attempting to load %s\n", wine_dbgstr_w(driver_module));
  66
  67     drvs.module = LoadLibraryW(driver_module);
  68     if(!drvs.module){
  69         TRACE("Unable to load %s: %u\n", wine_dbgstr_w(driver_module),
  70                 GetLastError());
  71         return FALSE;
  72     }
  73
  74 #define LDFC(n) do { drvs.p##n = (void*)GetProcAddress(drvs.module, #n);\
  75         if(!drvs.p##n) { FreeLibrary(drvs.module); return FALSE; } } while(0)
  76     LDFC(GetEndpointIDs);
  77     LDFC(GetAudioEndpoint);
  78 #undef LDFC
  79
  80     TRACE("Successfully loaded %s\n", wine_dbgstr_w(driver_module));
  81
  82     return TRUE;
  83 }
  84
  85 static BOOL init_driver(void)
  86 {
  87     static const WCHAR alsaW[] = {'a','l','s','a',0};
  88     static const WCHAR ossW[] = {'o','s','s',0};
  89     static const WCHAR coreaudioW[] = {'c','o','r','e','a','u','d','i','o',0};
  90     static const WCHAR *default_drivers[] = { alsaW, coreaudioW, ossW };
  91     static const WCHAR drv_key[] = {'S','o','f','t','w','a','r','e','\\',
  92         'W','i','n','e','\\','D','r','i','v','e','r','s',0};
  93     static const WCHAR drv_value[] = {'A','u','d','i','o',0};
  94     HKEY key;
  95     UINT i;
  96
  97     if(drvs.module)
  98         return TRUE;
  99
 100     if(RegOpenKeyW(HKEY_CURRENT_USER, drv_key, &key) == ERROR_SUCCESS){
 101         WCHAR driver_name[256];
 102         DWORD size = sizeof(driver_name);
 103
 104         if(RegQueryValueExW(key, drv_value, 0, NULL, (BYTE*)driver_name,
 105                     &size) == ERROR_SUCCESS){
 106             BOOL ret = load_driver(driver_name);
 107             RegCloseKey(key);
 108             if(!ret)
 109                 ERR("Failed to load driver: %s\n", wine_dbgstr_w(driver_name));
 110             return ret;
 111         }
 112
 113         RegCloseKey(key);
 114     }
 115
 116     for(i = 0; i < sizeof(default_drivers)/sizeof(*default_drivers); ++i)
 117         if(load_driver(default_drivers[i]))
 118             return TRUE;
 119
 120     return FALSE;
 121 }
 122
 123 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 124 {
 125     TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);
 126
 127     switch (fdwReason)
 128     {
 129         case DLL_PROCESS_ATTACH:
 130             instance = hinstDLL;
 131             DisableThreadLibraryCalls(hinstDLL);
 132             break;
 133         case DLL_PROCESS_DETACH:
 134             MMDevEnum_Free();
 135             break;
 136     }
 137
 138     return TRUE;
 139 }
 140
 141 HRESULT WINAPI DllCanUnloadNow(void)
 142 {
 143     return S_FALSE;
 144 }
 145
 146 typedef HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
 147
 148 typedef struct {
 149     IClassFactory IClassFactory_iface;
 150     REFCLSID rclsid;
 151     FnCreateInstance pfnCreateInstance;
 152 } IClassFactoryImpl;
 153
 154 static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
 155 {
 156     return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
 157 }
 158
 159 static HRESULT WINAPI
 160 MMCF_QueryInterface(LPCLASSFACTORY iface, REFIID riid, LPVOID *ppobj)
 161 {
 162     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 163     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
 164     if (ppobj == NULL)
 165         return E_POINTER;
 166     if (IsEqualIID(riid, &IID_IUnknown) ||
 167         IsEqualIID(riid, &IID_IClassFactory))
 168     {
 169         *ppobj = iface;
 170         IUnknown_AddRef(iface);
 171         return S_OK;
 172     }
 173     *ppobj = NULL;
 174     return E_NOINTERFACE;
 175 }
 176
 177 static ULONG WINAPI MMCF_AddRef(LPCLASSFACTORY iface)
 178 {
 179     return 2;
 180 }
 181
 182 static ULONG WINAPI MMCF_Release(LPCLASSFACTORY iface)
 183 {
 184     /* static class, won't be freed */
 185     return 1;
 186 }
 187
 188 static HRESULT WINAPI MMCF_CreateInstance(
 189     LPCLASSFACTORY iface,
 190     LPUNKNOWN pOuter,
 191     REFIID riid,
 192     LPVOID *ppobj)
 193 {
 194     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 195     TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
 196
 197     if (pOuter)
 198         return CLASS_E_NOAGGREGATION;
 199
 200     if (ppobj == NULL) {
 201         WARN("invalid parameter\n");
 202         return E_POINTER;
 203     }
 204     *ppobj = NULL;
 205     return This->pfnCreateInstance(riid, ppobj);
 206 }
 207
 208 static HRESULT WINAPI MMCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
 209 {
 210     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 211     FIXME("(%p, %d) stub!\n", This, dolock);
 212     return S_OK;
 213 }
 214
 215 static const IClassFactoryVtbl MMCF_Vtbl = {
 216     MMCF_QueryInterface,
 217     MMCF_AddRef,
 218     MMCF_Release,
 219     MMCF_CreateInstance,
 220     MMCF_LockServer
 221 };
 222
 223 static IClassFactoryImpl MMDEVAPI_CF[] = {
 224     { { &MMCF_Vtbl }, &CLSID_MMDeviceEnumerator, (FnCreateInstance)MMDevEnum_Create }
 225 };
 226
 227 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 228 {
 229     int i = 0;
 230     TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 231
 232     if(!init_driver()){
 233         ERR("Driver initialization failed\n");
 234         return E_FAIL;
 235     }
 236
 237     if (ppv == NULL) {
 238         WARN("invalid parameter\n");
 239         return E_INVALIDARG;
 240     }
 241
 242     *ppv = NULL;
 243
 244     if (!IsEqualIID(riid, &IID_IClassFactory) &&
 245         !IsEqualIID(riid, &IID_IUnknown)) {
 246         WARN("no interface for %s\n", debugstr_guid(riid));
 247         return E_NOINTERFACE;
 248     }
 249
 250     for (i = 0; i < sizeof(MMDEVAPI_CF)/sizeof(MMDEVAPI_CF[0]); ++i)
 251     {
 252         if (IsEqualGUID(rclsid, MMDEVAPI_CF[i].rclsid)) {
 253             IUnknown_AddRef(&MMDEVAPI_CF[i].IClassFactory_iface);
 254             *ppv = &MMDEVAPI_CF[i];
 255             return S_OK;
 256         }
 257         i++;
 258     }
 259
 260     WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
 261          debugstr_guid(riid), ppv);
 262     return CLASS_E_CLASSNOTAVAILABLE;
 263 }
 264
 265 /***********************************************************************
 266  *              DllRegisterServer (MMDEVAPI.@)
 267  */
 268 HRESULT WINAPI DllRegisterServer(void)
 269 {
 270     return __wine_register_resources( instance, NULL );
 271 }
 272
 273 /***********************************************************************
 274  *              DllUnregisterServer (MMDEVAPI.@)
 275  */
 276 HRESULT WINAPI DllUnregisterServer(void)
 277 {
 278     return __wine_unregister_resources( instance, NULL );
 279 }