dlls/quartz/main.c

   1 /*              DirectShow Base Functions (QUARTZ.DLL)
   2  *
   3  * Copyright 2002 Lionel Ulmer
   4  *
   5  * This file contains the (internal) driver registration functions,
   6  * driver enumeration APIs and DirectDraw creation functions.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/debug.h"
  25
  26 #include "quartz_private.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  29
  30 static DWORD dll_ref = 0;
  31
  32 /* For the moment, do nothing here. */
  33 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpv)
  34 {
  35     switch(fdwReason) {
  36         case DLL_PROCESS_ATTACH:
  37             DisableThreadLibraryCalls(hInstDLL);
  38             break;
  39         case DLL_PROCESS_DETACH:
  40             break;
  41     }
  42     return TRUE;
  43 }
  44
  45 /******************************************************************************
  46  * DirectShow ClassFactory
  47  */
  48 typedef struct {
  49     IClassFactory ITF_IClassFactory;
  50
  51     DWORD ref;
  52     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
  53 } IClassFactoryImpl;
  54
  55 struct object_creation_info
  56 {
  57     const CLSID *clsid;
  58     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
  59 };
  60
  61 static const struct object_creation_info object_creation[] =
  62 {
  63     { &CLSID_FilterGraph, FILTERGRAPH_create },
  64 };
  65
  66 static HRESULT WINAPI
  67 DSCF_QueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj)
  68 {
  69     ICOM_THIS(IClassFactoryImpl,iface);
  70
  71     if (IsEqualGUID(riid, &IID_IUnknown)
  72         || IsEqualGUID(riid, &IID_IClassFactory))
  73     {
  74         IClassFactory_AddRef(iface);
  75         *ppobj = This;
  76         return S_OK;
  77     }
  78
  79     WARN("(%p)->(%s,%p),not found\n",This,debugstr_guid(riid),ppobj);
  80     return E_NOINTERFACE;
  81 }
  82
  83 static ULONG WINAPI DSCF_AddRef(LPCLASSFACTORY iface) {
  84     ICOM_THIS(IClassFactoryImpl,iface);
  85     return ++(This->ref);
  86 }
  87
  88 static ULONG WINAPI DSCF_Release(LPCLASSFACTORY iface) {
  89     ICOM_THIS(IClassFactoryImpl,iface);
  90
  91     ULONG ref = --This->ref;
  92
  93     if (ref == 0)
  94         HeapFree(GetProcessHeap(), 0, This);
  95
  96     return ref;
  97 }
  98
  99
 100 static HRESULT WINAPI DSCF_CreateInstance(LPCLASSFACTORY iface, LPUNKNOWN pOuter,
 101                                           REFIID riid, LPVOID *ppobj) {
 102     ICOM_THIS(IClassFactoryImpl,iface);
 103     HRESULT hres;
 104     LPUNKNOWN punk;
 105
 106     TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 107
 108     hres = This->pfnCreateInstance(pOuter, (LPVOID *) &punk);
 109     if (FAILED(hres)) {
 110         *ppobj = NULL;
 111         return hres;
 112     }
 113     hres = IUnknown_QueryInterface(punk, riid, ppobj);
 114     if (FAILED(hres)) {
 115         *ppobj = NULL;
 116         return hres;
 117     }
 118     IUnknown_Release(punk);
 119     return hres;
 120 }
 121
 122 static HRESULT WINAPI DSCF_LockServer(LPCLASSFACTORY iface,BOOL dolock) {
 123     ICOM_THIS(IClassFactoryImpl,iface);
 124     FIXME("(%p)->(%d),stub!\n",This,dolock);
 125     return S_OK;
 126 }
 127
 128 static ICOM_VTABLE(IClassFactory) DSCF_Vtbl =
 129 {
 130     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 131     DSCF_QueryInterface,
 132     DSCF_AddRef,
 133     DSCF_Release,
 134     DSCF_CreateInstance,
 135     DSCF_LockServer
 136 };
 137
 138 /*******************************************************************************
 139  * DllGetClassObject [QUARTZ.@]
 140  * Retrieves class object from a DLL object
 141  *
 142  * NOTES
 143  *    Docs say returns STDAPI
 144  *
 145  * PARAMS
 146  *    rclsid [I] CLSID for the class object
 147  *    riid   [I] Reference to identifier of interface for class object
 148  *    ppv    [O] Address of variable to receive interface pointer for riid
 149  *
 150  * RETURNS
 151  *    Success: S_OK
 152  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 153  *             E_UNEXPECTED
 154  */
 155 DWORD WINAPI QUARTZ_DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 156 {
 157     int i;
 158     IClassFactoryImpl *factory;
 159
 160     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 161
 162     if ( !IsEqualGUID( &IID_IClassFactory, riid )
 163          && ! IsEqualGUID( &IID_IUnknown, riid) )
 164         return E_NOINTERFACE;
 165
 166     for (i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++)
 167     {
 168         if (IsEqualGUID(object_creation[i].clsid, rclsid))
 169             break;
 170     }
 171
 172     if (i == sizeof(object_creation)/sizeof(object_creation[0]))
 173     {
 174         FIXME("%s: no class found.\n", debugstr_guid(rclsid));
 175         return CLASS_E_CLASSNOTAVAILABLE;
 176     }
 177
 178     factory = HeapAlloc(GetProcessHeap(), 0, sizeof(*factory));
 179     if (factory == NULL) return E_OUTOFMEMORY;
 180
 181     factory->ITF_IClassFactory.lpVtbl = &DSCF_Vtbl;
 182     factory->ref = 1;
 183
 184     factory->pfnCreateInstance = object_creation[i].pfnCreateInstance;
 185
 186     *ppv = &(factory->ITF_IClassFactory);
 187     return S_OK;
 188 }
 189
 190 /***********************************************************************
 191  *      DllRegisterServer (QUARTZ.@)
 192  */
 193 HRESULT WINAPI QUARTZ_DllRegisterServer()
 194 {
 195         FIXME("(): stub\n");
 196         return 0;
 197 }
 198
 199 /***********************************************************************
 200  *              DllCanUnloadNow (QUARTZ.@)
 201  */
 202 HRESULT WINAPI QUARTZ_DllCanUnloadNow()
 203 {
 204     return dll_ref != 0 ? S_FALSE : S_OK;
 205 }