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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #define COM_NO_WINDOWS_H
  20 #include <assert.h>
  21 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wingdi.h"
  26 #include "winuser.h"
  27 #include "winnls.h"
  28 #include "winerror.h"
  29
  30 #include "ole2.h"
  31 #include "vfw.h"
  32
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(avifile);
  36
  37 #include "initguid.h"
  38 #include "avifile_private.h"
  39
  40 HMODULE AVIFILE_hModule   = NULL;
  41
  42 BOOL    AVIFILE_bLocked   = FALSE;
  43 UINT    AVIFILE_uUseCount = 0;
  44
  45 static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj);
  46 static ULONG   WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface);
  47 static ULONG   WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface);
  48 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj);
  49 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock);
  50
  51 static ICOM_VTABLE(IClassFactory) iclassfact = {
  52   ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
  53   IClassFactory_fnQueryInterface,
  54   IClassFactory_fnAddRef,
  55   IClassFactory_fnRelease,
  56   IClassFactory_fnCreateInstance,
  57   IClassFactory_fnLockServer
  58 };
  59
  60 typedef struct
  61 {
  62   /* IUnknown fields */
  63   IClassFactoryVtbl *lpVtbl;
  64   DWORD  dwRef;
  65
  66   CLSID  clsid;
  67 } IClassFactoryImpl;
  68
  69 static HRESULT AVIFILE_CreateClassFactory(const CLSID *pclsid, const IID *riid,
  70                                           LPVOID *ppv)
  71 {
  72   IClassFactoryImpl *pClassFactory = NULL;
  73   HRESULT            hr;
  74
  75   *ppv = NULL;
  76
  77   pClassFactory = (IClassFactoryImpl*)LocalAlloc(LPTR, sizeof(*pClassFactory));
  78   if (pClassFactory == NULL)
  79     return E_OUTOFMEMORY;
  80
  81   pClassFactory->lpVtbl    = &iclassfact;
  82   pClassFactory->dwRef     = 0;
  83   memcpy(&pClassFactory->clsid, pclsid, sizeof(pClassFactory->clsid));
  84
  85   hr = IUnknown_QueryInterface((IUnknown*)pClassFactory, riid, ppv);
  86   if (FAILED(hr)) {
  87     LocalFree((HLOCAL)pClassFactory);
  88     *ppv = NULL;
  89   }
  90
  91   return hr;
  92 }
  93
  94 static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,
  95                                                      REFIID riid,LPVOID *ppobj)
  96 {
  97   TRACE("(%p,%p,%p)\n", iface, riid, ppobj);
  98
  99   if ((IsEqualGUID(&IID_IUnknown, riid)) ||
 100       (IsEqualGUID(&IID_IClassFactory, riid))) {
 101     *ppobj = iface;
 102     IClassFactory_AddRef(iface);
 103     return S_OK;
 104   }
 105
 106   return E_NOINTERFACE;
 107 }
 108
 109 static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface)
 110 {
 111   ICOM_THIS(IClassFactoryImpl,iface);
 112
 113   TRACE("(%p)\n", iface);
 114
 115   return ++(This->dwRef);
 116 }
 117
 118 static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface)
 119 {
 120   ICOM_THIS(IClassFactoryImpl,iface);
 121
 122   TRACE("(%p)\n", iface);
 123   if ((--(This->dwRef)) > 0)
 124     return This->dwRef;
 125
 126   return 0;
 127 }
 128
 129 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,
 130                                                      LPUNKNOWN pOuter,
 131                                                      REFIID riid,LPVOID *ppobj)
 132 {
 133   ICOM_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 AVIFILE_DllGetClassObject(const CLSID* 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 DWORD WINAPI AVIFILE_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,%lu,%p)\n", hInstDll, fdwReason, lpvReserved);
 208
 209   switch (fdwReason) {
 210   case DLL_PROCESS_ATTACH:
 211     DisableThreadLibraryCalls(hInstDll);
 212     AVIFILE_hModule = (HMODULE)hInstDll;
 213     break;
 214   case DLL_PROCESS_DETACH:
 215     break;
 216   };
 217
 218   return TRUE;
 219 }