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 #include <assert.h>
  20 #include <stdarg.h>
  21
  22 #define COBJMACROS
  23 #define COM_NO_WINDOWS_H
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28 #include "winuser.h"
  29 #include "winnls.h"
  30 #include "winerror.h"
  31
  32 #include "ole2.h"
  33 #include "vfw.h"
  34
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(avifile);
  38
  39 #include "initguid.h"
  40 #include "avifile_private.h"
  41
  42 HMODULE AVIFILE_hModule   = NULL;
  43
  44 BOOL    AVIFILE_bLocked   = FALSE;
  45 UINT    AVIFILE_uUseCount = 0;
  46
  47 static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj);
  48 static ULONG   WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface);
  49 static ULONG   WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface);
  50 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj);
  51 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock);
  52
  53 static const IClassFactoryVtbl iclassfact = {
  54   IClassFactory_fnQueryInterface,
  55   IClassFactory_fnAddRef,
  56   IClassFactory_fnRelease,
  57   IClassFactory_fnCreateInstance,
  58   IClassFactory_fnLockServer
  59 };
  60
  61 typedef struct
  62 {
  63   /* IUnknown fields */
  64   const IClassFactoryVtbl *lpVtbl;
  65   DWORD  dwRef;
  66
  67   CLSID  clsid;
  68 } IClassFactoryImpl;
  69
  70 static HRESULT AVIFILE_CreateClassFactory(const CLSID *pclsid, const IID *riid,
  71                                           LPVOID *ppv)
  72 {
  73   IClassFactoryImpl *pClassFactory = NULL;
  74   HRESULT            hr;
  75
  76   *ppv = NULL;
  77
  78   pClassFactory = (IClassFactoryImpl*)LocalAlloc(LPTR, sizeof(*pClassFactory));
  79   if (pClassFactory == NULL)
  80     return E_OUTOFMEMORY;
  81
  82   pClassFactory->lpVtbl    = &iclassfact;
  83   pClassFactory->dwRef     = 0;
  84   memcpy(&pClassFactory->clsid, pclsid, sizeof(pClassFactory->clsid));
  85
  86   hr = IClassFactory_QueryInterface((IClassFactory*)pClassFactory, riid, ppv);
  87   if (FAILED(hr)) {
  88     LocalFree((HLOCAL)pClassFactory);
  89     *ppv = NULL;
  90   }
  91
  92   return hr;
  93 }
  94
  95 static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,
  96                                                      REFIID riid,LPVOID *ppobj)
  97 {
  98   TRACE("(%p,%p,%p)\n", iface, riid, ppobj);
  99
 100   if ((IsEqualGUID(&IID_IUnknown, riid)) ||
 101       (IsEqualGUID(&IID_IClassFactory, riid))) {
 102     *ppobj = iface;
 103     IClassFactory_AddRef(iface);
 104     return S_OK;
 105   }
 106
 107   return E_NOINTERFACE;
 108 }
 109
 110 static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface)
 111 {
 112   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 113
 114   TRACE("(%p)\n", iface);
 115
 116   return ++(This->dwRef);
 117 }
 118
 119 static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface)
 120 {
 121   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 122
 123   TRACE("(%p)\n", iface);
 124   if ((--(This->dwRef)) > 0)
 125     return This->dwRef;
 126
 127   return 0;
 128 }
 129
 130 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,
 131                                                      LPUNKNOWN pOuter,
 132                                                      REFIID riid,LPVOID *ppobj)
 133 {
 134   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 135
 136   TRACE("(%p,%p,%s,%p)\n", iface, pOuter, debugstr_guid(riid),
 137         ppobj);
 138
 139   if (ppobj == NULL || pOuter != NULL)
 140     return E_FAIL;
 141   *ppobj = NULL;
 142
 143   if (IsEqualGUID(&CLSID_AVIFile, &This->clsid))
 144     return AVIFILE_CreateAVIFile(riid,ppobj);
 145   if (IsEqualGUID(&CLSID_ICMStream, &This->clsid))
 146     return AVIFILE_CreateICMStream(riid,ppobj);
 147   if (IsEqualGUID(&CLSID_WAVFile, &This->clsid))
 148     return AVIFILE_CreateWAVFile(riid,ppobj);
 149   if (IsEqualGUID(&CLSID_ACMStream, &This->clsid))
 150     return AVIFILE_CreateACMStream(riid,ppobj);
 151
 152   return E_NOINTERFACE;
 153 }
 154
 155 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock)
 156 {
 157   TRACE("(%p,%d)\n",iface,dolock);
 158
 159   AVIFILE_bLocked = dolock;
 160
 161   return S_OK;
 162 }
 163
 164 LPCWSTR AVIFILE_BasenameW(LPCWSTR szPath)
 165 {
 166 #define SLASH(w) ((w) == '/' || (w) == '\\')
 167
 168   LPCWSTR szCur;
 169
 170   for (szCur = szPath + lstrlenW(szPath);
 171        szCur > szPath && !SLASH(*szCur) && *szCur != ':';)
 172     szCur--;
 173
 174   if (szCur == szPath)
 175     return szCur;
 176   else
 177     return szCur + 1;
 178
 179 #undef SLASH
 180 }
 181
 182 /***********************************************************************
 183  *              DllGetClassObject (AVIFIL32.@)
 184  */
 185 HRESULT WINAPI DllGetClassObject(REFCLSID pclsid, REFIID piid, LPVOID *ppv)
 186 {
 187   TRACE("(%s,%s,%p)\n", debugstr_guid(pclsid), debugstr_guid(piid), ppv);
 188
 189   if (pclsid == NULL || piid == NULL || ppv == NULL)
 190     return E_FAIL;
 191
 192   return AVIFILE_CreateClassFactory(pclsid,piid,ppv);
 193 }
 194
 195 /*****************************************************************************
 196  *              DllCanUnloadNow         (AVIFIL32.@)
 197  */
 198 HRESULT WINAPI DllCanUnloadNow(void)
 199 {
 200   return ((AVIFILE_bLocked || AVIFILE_uUseCount) ? S_FALSE : S_OK);
 201 }
 202
 203 /*****************************************************************************
 204  *              DllMain         [AVIFIL32.init]
 205  */
 206 BOOL WINAPI DllMain(HINSTANCE hInstDll, DWORD fdwReason, LPVOID lpvReserved)
 207 {
 208   TRACE("(%p,%ld,%p)\n", hInstDll, fdwReason, lpvReserved);
 209
 210   switch (fdwReason) {
 211   case DLL_PROCESS_ATTACH:
 212     DisableThreadLibraryCalls(hInstDll);
 213     AVIFILE_hModule = (HMODULE)hInstDll;
 214     break;
 215   case DLL_PROCESS_DETACH:
 216     break;
 217   };
 218
 219   return TRUE;
 220 }