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
  29 #include "ole2.h"
  30 #include "vfw.h"
  31
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(avifile);
  35
  36 #include "initguid.h"
  37 #include "avifile_private.h"
  38
  39 HMODULE AVIFILE_hModule   = NULL;
  40
  41 static BOOL    AVIFILE_bLocked;
  42 static UINT    AVIFILE_uUseCount;
  43
  44 static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj);
  45 static ULONG   WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface);
  46 static ULONG   WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface);
  47 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj);
  48 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock);
  49
  50 static const IClassFactoryVtbl iclassfact = {
  51   IClassFactory_fnQueryInterface,
  52   IClassFactory_fnAddRef,
  53   IClassFactory_fnRelease,
  54   IClassFactory_fnCreateInstance,
  55   IClassFactory_fnLockServer
  56 };
  57
  58 typedef struct
  59 {
  60   /* IUnknown fields */
  61   const IClassFactoryVtbl *lpVtbl;
  62   DWORD  dwRef;
  63
  64   CLSID  clsid;
  65 } IClassFactoryImpl;
  66
  67 static HRESULT AVIFILE_CreateClassFactory(const CLSID *pclsid, const IID *riid,
  68                                           LPVOID *ppv)
  69 {
  70   IClassFactoryImpl *pClassFactory = NULL;
  71   HRESULT            hr;
  72
  73   *ppv = NULL;
  74
  75   pClassFactory = HeapAlloc(GetProcessHeap(), 0, sizeof(*pClassFactory));
  76   if (pClassFactory == NULL)
  77     return E_OUTOFMEMORY;
  78
  79   pClassFactory->lpVtbl    = &iclassfact;
  80   pClassFactory->dwRef     = 0;
  81   memcpy(&pClassFactory->clsid, pclsid, sizeof(pClassFactory->clsid));
  82
  83   hr = IClassFactory_QueryInterface((IClassFactory*)pClassFactory, riid, ppv);
  84   if (FAILED(hr)) {
  85     HeapFree(GetProcessHeap(), 0, pClassFactory);
  86     *ppv = NULL;
  87   }
  88
  89   return hr;
  90 }
  91
  92 static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,
  93                                                      REFIID riid,LPVOID *ppobj)
  94 {
  95   TRACE("(%p,%p,%p)\n", iface, riid, ppobj);
  96
  97   if ((IsEqualGUID(&IID_IUnknown, riid)) ||
  98       (IsEqualGUID(&IID_IClassFactory, riid))) {
  99     *ppobj = iface;
 100     IClassFactory_AddRef(iface);
 101     return S_OK;
 102   }
 103
 104   return E_NOINTERFACE;
 105 }
 106
 107 static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface)
 108 {
 109   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 110
 111   TRACE("(%p)\n", iface);
 112
 113   return ++(This->dwRef);
 114 }
 115
 116 static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface)
 117 {
 118   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 119
 120   TRACE("(%p)\n", iface);
 121   if ((--(This->dwRef)) > 0)
 122     return This->dwRef;
 123
 124   HeapFree(GetProcessHeap(), 0, This);
 125
 126   return 0;
 127 }
 128
 129 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,
 130                                                      LPUNKNOWN pOuter,
 131                                                      REFIID riid,LPVOID *ppobj)
 132 {
 133   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 134
 135   TRACE("(%p,%p,%s,%p)\n", iface, pOuter, debugstr_guid(riid),
 136         ppobj);
 137
 138   if (ppobj == NULL || pOuter != NULL)
 139     return E_FAIL;
 140   *ppobj = NULL;
 141
 142   if (IsEqualGUID(&CLSID_AVIFile, &This->clsid))
 143     return AVIFILE_CreateAVIFile(riid,ppobj);
 144   if (IsEqualGUID(&CLSID_ICMStream, &This->clsid))
 145     return AVIFILE_CreateICMStream(riid,ppobj);
 146   if (IsEqualGUID(&CLSID_WAVFile, &This->clsid))
 147     return AVIFILE_CreateWAVFile(riid,ppobj);
 148   if (IsEqualGUID(&CLSID_ACMStream, &This->clsid))
 149     return AVIFILE_CreateACMStream(riid,ppobj);
 150
 151   return E_NOINTERFACE;
 152 }
 153
 154 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock)
 155 {
 156   TRACE("(%p,%d)\n",iface,dolock);
 157
 158   AVIFILE_bLocked = dolock;
 159
 160   return S_OK;
 161 }
 162
 163 LPCWSTR AVIFILE_BasenameW(LPCWSTR szPath)
 164 {
 165 #define SLASH(w) ((w) == '/' || (w) == '\\')
 166
 167   LPCWSTR szCur;
 168
 169   for (szCur = szPath + lstrlenW(szPath);
 170        szCur > szPath && !SLASH(*szCur) && *szCur != ':';)
 171     szCur--;
 172
 173   if (szCur == szPath)
 174     return szCur;
 175   else
 176     return szCur + 1;
 177
 178 #undef SLASH
 179 }
 180
 181 /***********************************************************************
 182  *              DllGetClassObject (AVIFIL32.@)
 183  */
 184 HRESULT WINAPI DllGetClassObject(REFCLSID pclsid, REFIID piid, LPVOID *ppv)
 185 {
 186   TRACE("(%s,%s,%p)\n", debugstr_guid(pclsid), debugstr_guid(piid), ppv);
 187
 188   if (pclsid == NULL || piid == NULL || ppv == NULL)
 189     return E_FAIL;
 190
 191   return AVIFILE_CreateClassFactory(pclsid,piid,ppv);
 192 }
 193
 194 /*****************************************************************************
 195  *              DllCanUnloadNow         (AVIFIL32.@)
 196  */
 197 HRESULT WINAPI DllCanUnloadNow(void)
 198 {
 199   return ((AVIFILE_bLocked || AVIFILE_uUseCount) ? S_FALSE : S_OK);
 200 }
 201
 202 /*****************************************************************************
 203  *              DllMain         [AVIFIL32.init]
 204  */
 205 BOOL WINAPI DllMain(HINSTANCE hInstDll, DWORD fdwReason, LPVOID lpvReserved)
 206 {
 207   TRACE("(%p,%d,%p)\n", hInstDll, fdwReason, lpvReserved);
 208
 209   switch (fdwReason) {
 210   case DLL_PROCESS_ATTACH:
 211     DisableThreadLibraryCalls(hInstDll);
 212     AVIFILE_hModule = hInstDll;
 213     break;
 214   case DLL_PROCESS_DETACH:
 215     break;
 216   };
 217
 218   return TRUE;
 219 }