dlls/avifil32/factory.c

   1 /*
   2  * Copyright 2002 Michael Günnewig
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdarg.h>
  20
  21 #define COBJMACROS
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wingdi.h"
  26 #include "winuser.h"
  27 #include "winerror.h"
  28 #include "ole2.h"
  29
  30 #include "initguid.h"
  31 #include "vfw.h"
  32 #include "avifile_private.h"
  33
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(avifile);
  37
  38 HMODULE AVIFILE_hModule   = NULL;
  39
  40 static BOOL    AVIFILE_bLocked;
  41 static UINT    AVIFILE_uUseCount;
  42
  43 static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj);
  44 static ULONG   WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface);
  45 static ULONG   WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface);
  46 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj);
  47 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock);
  48
  49 static const IClassFactoryVtbl iclassfact = {
  50   IClassFactory_fnQueryInterface,
  51   IClassFactory_fnAddRef,
  52   IClassFactory_fnRelease,
  53   IClassFactory_fnCreateInstance,
  54   IClassFactory_fnLockServer
  55 };
  56
  57 typedef struct
  58 {
  59   /* IUnknown fields */
  60   const IClassFactoryVtbl *lpVtbl;
  61   DWORD  dwRef;
  62
  63   CLSID  clsid;
  64 } IClassFactoryImpl;
  65
  66 static HRESULT AVIFILE_CreateClassFactory(const CLSID *pclsid, const IID *riid,
  67                                           LPVOID *ppv)
  68 {
  69   IClassFactoryImpl *pClassFactory = NULL;
  70   HRESULT            hr;
  71
  72   *ppv = NULL;
  73
  74   pClassFactory = HeapAlloc(GetProcessHeap(), 0, sizeof(*pClassFactory));
  75   if (pClassFactory == NULL)
  76     return E_OUTOFMEMORY;
  77
  78   pClassFactory->lpVtbl    = &iclassfact;
  79   pClassFactory->dwRef     = 0;
  80   pClassFactory->clsid     = *pclsid;
  81
  82   hr = IClassFactory_QueryInterface((IClassFactory*)pClassFactory, riid, ppv);
  83   if (FAILED(hr)) {
  84     HeapFree(GetProcessHeap(), 0, pClassFactory);
  85     *ppv = NULL;
  86   }
  87
  88   return hr;
  89 }
  90
  91 static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,
  92                                                      REFIID riid,LPVOID *ppobj)
  93 {
  94   TRACE("(%p,%p,%p)\n", iface, riid, ppobj);
  95
  96   if ((IsEqualGUID(&IID_IUnknown, riid)) ||
  97       (IsEqualGUID(&IID_IClassFactory, riid))) {
  98     *ppobj = iface;
  99     IClassFactory_AddRef(iface);
 100     return S_OK;
 101   }
 102
 103   return E_NOINTERFACE;
 104 }
 105
 106 static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface)
 107 {
 108   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 109
 110   TRACE("(%p)\n", iface);
 111
 112   return ++(This->dwRef);
 113 }
 114
 115 static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface)
 116 {
 117   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 118
 119   TRACE("(%p)\n", iface);
 120   if ((--(This->dwRef)) > 0)
 121     return This->dwRef;
 122
 123   HeapFree(GetProcessHeap(), 0, This);
 124
 125   return 0;
 126 }
 127
 128 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,
 129                                                      LPUNKNOWN pOuter,
 130                                                      REFIID riid,LPVOID *ppobj)
 131 {
 132   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 133
 134   TRACE("(%p,%p,%s,%p)\n", iface, pOuter, debugstr_guid(riid),
 135         ppobj);
 136
 137   if (ppobj == NULL || pOuter != NULL)
 138     return E_FAIL;
 139   *ppobj = NULL;
 140
 141   if (IsEqualGUID(&CLSID_AVIFile, &This->clsid))
 142     return AVIFILE_CreateAVIFile(riid,ppobj);
 143   if (IsEqualGUID(&CLSID_ICMStream, &This->clsid))
 144     return AVIFILE_CreateICMStream(riid,ppobj);
 145   if (IsEqualGUID(&CLSID_WAVFile, &This->clsid))
 146     return AVIFILE_CreateWAVFile(riid,ppobj);
 147   if (IsEqualGUID(&CLSID_ACMStream, &This->clsid))
 148     return AVIFILE_CreateACMStream(riid,ppobj);
 149
 150   return E_NOINTERFACE;
 151 }
 152
 153 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock)
 154 {
 155   TRACE("(%p,%d)\n",iface,dolock);
 156
 157   AVIFILE_bLocked = dolock;
 158
 159   return S_OK;
 160 }
 161
 162 LPCWSTR AVIFILE_BasenameW(LPCWSTR szPath)
 163 {
 164 #define SLASH(w) ((w) == '/' || (w) == '\\')
 165
 166   LPCWSTR szCur;
 167
 168   for (szCur = szPath + lstrlenW(szPath);
 169        szCur > szPath && !SLASH(*szCur) && *szCur != ':';)
 170     szCur--;
 171
 172   if (szCur == szPath)
 173     return szCur;
 174   else
 175     return szCur + 1;
 176
 177 #undef SLASH
 178 }
 179
 180 /***********************************************************************
 181  *              DllGetClassObject (AVIFIL32.@)
 182  */
 183 HRESULT WINAPI DllGetClassObject(REFCLSID pclsid, REFIID piid, LPVOID *ppv)
 184 {
 185   TRACE("(%s,%s,%p)\n", debugstr_guid(pclsid), debugstr_guid(piid), ppv);
 186
 187   if (pclsid == NULL || piid == NULL || ppv == NULL)
 188     return E_FAIL;
 189
 190   return AVIFILE_CreateClassFactory(pclsid,piid,ppv);
 191 }
 192
 193 /*****************************************************************************
 194  *              DllCanUnloadNow         (AVIFIL32.@)
 195  */
 196 HRESULT WINAPI DllCanUnloadNow(void)
 197 {
 198   return ((AVIFILE_bLocked || AVIFILE_uUseCount) ? S_FALSE : S_OK);
 199 }
 200
 201 /*****************************************************************************
 202  *              DllMain         [AVIFIL32.init]
 203  */
 204 BOOL WINAPI DllMain(HINSTANCE hInstDll, DWORD fdwReason, LPVOID lpvReserved)
 205 {
 206   TRACE("(%p,%d,%p)\n", hInstDll, fdwReason, lpvReserved);
 207
 208   switch (fdwReason) {
 209   case DLL_PROCESS_ATTACH:
 210     DisableThreadLibraryCalls(hInstDll);
 211     AVIFILE_hModule = hInstDll;
 212     break;
 213   case DLL_PROCESS_DETACH:
 214     break;
 215   };
 216
 217   return TRUE;
 218 }