dlls/amstream/main.c

   1 /*
   2  *     MultiMedia Streams Base Functions (AMSTREAM.DLL)
   3  *
   4  * Copyright 2004 Christian Costa
   5  *
   6  * This file contains the (internal) driver registration functions,
   7  * driver enumeration APIs and DirectDraw creation functions.
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include <stdarg.h>
  25 #include <string.h>
  26
  27 #define COBJMACROS
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winuser.h"
  32 #include "winerror.h"
  33
  34 #include "ole2.h"
  35 #include "rpcproxy.h"
  36
  37 #include "amstream_private.h"
  38 #include "amstream.h"
  39
  40 #include "wine/debug.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(amstream);
  43
  44 static HINSTANCE instance;
  45 static DWORD dll_ref = 0;
  46
  47 /* For the moment, do nothing here. */
  48 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpv)
  49 {
  50     switch(fdwReason) {
  51         case DLL_PROCESS_ATTACH:
  52             instance = hInstDLL;
  53             DisableThreadLibraryCalls(hInstDLL);
  54             break;
  55         case DLL_PROCESS_DETACH:
  56             break;
  57     }
  58     return TRUE;
  59 }
  60
  61 /******************************************************************************
  62  * Multimedia Streams ClassFactory
  63  */
  64 typedef struct {
  65     IClassFactory ITF_IClassFactory;
  66
  67     LONG ref;
  68     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
  69 } IClassFactoryImpl;
  70
  71 struct object_creation_info
  72 {
  73     const CLSID *clsid;
  74     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
  75 };
  76
  77 static const struct object_creation_info object_creation[] =
  78 {
  79     { &CLSID_AMMultiMediaStream, AM_create },
  80     { &CLSID_AMDirectDrawStream, AM_create },
  81     { &CLSID_MediaStreamFilter, MediaStreamFilter_create }
  82 };
  83
  84 static HRESULT WINAPI
  85 AMCF_QueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj)
  86 {
  87     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
  88
  89     if (IsEqualGUID(riid, &IID_IUnknown)
  90         || IsEqualGUID(riid, &IID_IClassFactory))
  91     {
  92         IClassFactory_AddRef(iface);
  93         *ppobj = This;
  94         return S_OK;
  95     }
  96
  97     WARN("(%p)->(%s,%p),not found\n",This,debugstr_guid(riid),ppobj);
  98     return E_NOINTERFACE;
  99 }
 100
 101 static ULONG WINAPI AMCF_AddRef(LPCLASSFACTORY iface)
 102 {
 103     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 104     return InterlockedIncrement(&This->ref);
 105 }
 106
 107 static ULONG WINAPI AMCF_Release(LPCLASSFACTORY iface)
 108 {
 109     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 110
 111     ULONG ref = InterlockedDecrement(&This->ref);
 112
 113     if (ref == 0)
 114         HeapFree(GetProcessHeap(), 0, This);
 115
 116     return ref;
 117 }
 118
 119
 120 static HRESULT WINAPI AMCF_CreateInstance(LPCLASSFACTORY iface, LPUNKNOWN pOuter,
 121                                           REFIID riid, LPVOID *ppobj)
 122 {
 123     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 124     HRESULT hres;
 125     LPUNKNOWN punk;
 126
 127     TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 128
 129     *ppobj = NULL;
 130     hres = This->pfnCreateInstance(pOuter, (LPVOID *) &punk);
 131     if (SUCCEEDED(hres)) {
 132         hres = IUnknown_QueryInterface(punk, riid, ppobj);
 133         IUnknown_Release(punk);
 134     }
 135     return hres;
 136 }
 137
 138 static HRESULT WINAPI AMCF_LockServer(LPCLASSFACTORY iface,BOOL dolock)
 139 {
 140     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 141     FIXME("(%p)->(%d),stub!\n",This,dolock);
 142     return S_OK;
 143 }
 144
 145 static const IClassFactoryVtbl DSCF_Vtbl =
 146 {
 147     AMCF_QueryInterface,
 148     AMCF_AddRef,
 149     AMCF_Release,
 150     AMCF_CreateInstance,
 151     AMCF_LockServer
 152 };
 153
 154 /*******************************************************************************
 155  * DllGetClassObject [AMSTREAM.@]
 156  * Retrieves class object from a DLL object
 157  *
 158  * NOTES
 159  *    Docs say returns STDAPI
 160  *
 161  * PARAMS
 162  *    rclsid [I] CLSID for the class object
 163  *    riid   [I] Reference to identifier of interface for class object
 164  *    ppv    [O] Address of variable to receive interface pointer for riid
 165  *
 166  * RETURNS
 167  *    Success: S_OK
 168  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 169  *             E_UNEXPECTED
 170  */
 171 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 172 {
 173     unsigned int i;
 174     IClassFactoryImpl *factory;
 175
 176     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 177
 178     if ( !IsEqualGUID( &IID_IClassFactory, riid )
 179          && ! IsEqualGUID( &IID_IUnknown, riid) )
 180         return E_NOINTERFACE;
 181
 182     for (i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++)
 183     {
 184         if (IsEqualGUID(object_creation[i].clsid, rclsid))
 185             break;
 186     }
 187
 188     if (i == sizeof(object_creation)/sizeof(object_creation[0]))
 189     {
 190         FIXME("%s: no class found.\n", debugstr_guid(rclsid));
 191         return CLASS_E_CLASSNOTAVAILABLE;
 192     }
 193
 194     factory = HeapAlloc(GetProcessHeap(), 0, sizeof(*factory));
 195     if (factory == NULL) return E_OUTOFMEMORY;
 196
 197     factory->ITF_IClassFactory.lpVtbl = &DSCF_Vtbl;
 198     factory->ref = 1;
 199
 200     factory->pfnCreateInstance = object_creation[i].pfnCreateInstance;
 201
 202     *ppv = &(factory->ITF_IClassFactory);
 203     return S_OK;
 204 }
 205
 206 /***********************************************************************
 207  *              DllCanUnloadNow (AMSTREAM.@)
 208  */
 209 HRESULT WINAPI DllCanUnloadNow(void)
 210 {
 211     return dll_ref != 0 ? S_FALSE : S_OK;
 212 }
 213
 214 /***********************************************************************
 215  *              DllRegisterServer (AMSTREAM.@)
 216  */
 217 HRESULT WINAPI DllRegisterServer(void)
 218 {
 219     return __wine_register_resources( instance );
 220 }
 221
 222 /***********************************************************************
 223  *              DllUnregisterServer (AMSTREAM.@)
 224  */
 225 HRESULT WINAPI DllUnregisterServer(void)
 226 {
 227     return __wine_unregister_resources( instance );
 228 }