dlls/amstream/main.c

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