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