Wine Cross Reference
wine/dlls/avifil32/factory.c

   /*
    * Copyright 2002 Michael Günnewig
    *
    * This library is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Lesser General Public
    * License as published by the Free Software Foundation; either
    * version 2.1 of the License, or (at your option) any later version.
    *
    * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #include <stdarg.h>
  
  #define COBJMACROS
  
  #include "windef.h"
  #include "winbase.h"
  #include "wingdi.h"
  #include "winuser.h"
  #include "winerror.h"
  #include "ole2.h"
  
  #include "initguid.h"
  #include "vfw.h"
  #include "avifile_private.h"
  
  #include "wine/debug.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(avifile);
  
  HMODULE AVIFILE_hModule   = NULL;
  
  static BOOL    AVIFILE_bLocked;
  static UINT    AVIFILE_uUseCount;
  
  static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj);
  static ULONG   WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface);
  static ULONG   WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface);
  static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj);
  static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock);
  
  static const IClassFactoryVtbl iclassfact = {
    IClassFactory_fnQueryInterface,
    IClassFactory_fnAddRef,
    IClassFactory_fnRelease,
    IClassFactory_fnCreateInstance,
    IClassFactory_fnLockServer
  };
  
  typedef struct
  {
    /* IUnknown fields */
    const IClassFactoryVtbl *lpVtbl;
    DWORD  dwRef;
  
    CLSID  clsid;
  } IClassFactoryImpl;
  
  static HRESULT AVIFILE_CreateClassFactory(const CLSID *pclsid, const IID *riid,
                                            LPVOID *ppv)
  {
    IClassFactoryImpl *pClassFactory = NULL;
    HRESULT            hr;
  
    *ppv = NULL;
  
    pClassFactory = HeapAlloc(GetProcessHeap(), 0, sizeof(*pClassFactory));
    if (pClassFactory == NULL)
      return E_OUTOFMEMORY;
  
    pClassFactory->lpVtbl    = &iclassfact;
    pClassFactory->dwRef     = 0;
    pClassFactory->clsid     = *pclsid;
  
    hr = IClassFactory_QueryInterface((IClassFactory*)pClassFactory, riid, ppv);
    if (FAILED(hr)) {
      HeapFree(GetProcessHeap(), 0, pClassFactory);
      *ppv = NULL;
    }
  
    return hr;
  }
  
  static HRESULT WINAPI IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,
                                                       REFIID riid,LPVOID *ppobj)
  {
    TRACE("(%p,%p,%p)\n", iface, riid, ppobj);
  
    if ((IsEqualGUID(&IID_IUnknown, riid)) ||
        (IsEqualGUID(&IID_IClassFactory, riid))) {
      *ppobj = iface;
      IClassFactory_AddRef(iface);
     return S_OK;
   }
 
   return E_NOINTERFACE;
 }
 
 static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface)
 {
   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 
   TRACE("(%p)\n", iface);
 
   return ++(This->dwRef);
 }
 
 static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface)
 {
   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 
   TRACE("(%p)\n", iface);
   if ((--(This->dwRef)) > 0)
     return This->dwRef;
 
   HeapFree(GetProcessHeap(), 0, This);
 
   return 0;
 }
 
 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,
                                                      LPUNKNOWN pOuter,
                                                      REFIID riid,LPVOID *ppobj)
 {
   IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 
   TRACE("(%p,%p,%s,%p)\n", iface, pOuter, debugstr_guid(riid),
         ppobj);
 
   if (ppobj == NULL || pOuter != NULL)
     return E_FAIL;
   *ppobj = NULL;
 
   if (IsEqualGUID(&CLSID_AVIFile, &This->clsid))
     return AVIFILE_CreateAVIFile(riid,ppobj);
   if (IsEqualGUID(&CLSID_ICMStream, &This->clsid))
     return AVIFILE_CreateICMStream(riid,ppobj);
   if (IsEqualGUID(&CLSID_WAVFile, &This->clsid))
     return AVIFILE_CreateWAVFile(riid,ppobj);
   if (IsEqualGUID(&CLSID_ACMStream, &This->clsid))
     return AVIFILE_CreateACMStream(riid,ppobj);
 
   return E_NOINTERFACE;
 }
 
 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock)
 {
   TRACE("(%p,%d)\n",iface,dolock);
 
   AVIFILE_bLocked = dolock;
 
   return S_OK;
 }
 
 LPCWSTR AVIFILE_BasenameW(LPCWSTR szPath)
 {
 #define SLASH(w) ((w) == '/' || (w) == '\\')
 
   LPCWSTR szCur;
 
   for (szCur = szPath + lstrlenW(szPath);
        szCur > szPath && !SLASH(*szCur) && *szCur != ':';)
     szCur--;
 
   if (szCur == szPath)
     return szCur;
   else
     return szCur + 1;
 
 #undef SLASH
 }
 
 /***********************************************************************
  *              DllGetClassObject (AVIFIL32.@)
  */
 HRESULT WINAPI DllGetClassObject(REFCLSID pclsid, REFIID piid, LPVOID *ppv)
 {
   TRACE("(%s,%s,%p)\n", debugstr_guid(pclsid), debugstr_guid(piid), ppv);
 
   if (pclsid == NULL || piid == NULL || ppv == NULL)
     return E_FAIL;
 
   return AVIFILE_CreateClassFactory(pclsid,piid,ppv);
 }
 
 /*****************************************************************************
  *              DllCanUnloadNow         (AVIFIL32.@)
  */
 HRESULT WINAPI DllCanUnloadNow(void)
 {
   return ((AVIFILE_bLocked || AVIFILE_uUseCount) ? S_FALSE : S_OK);
 }
 
 /*****************************************************************************
  *              DllMain         [AVIFIL32.init]
  */
 BOOL WINAPI DllMain(HINSTANCE hInstDll, DWORD fdwReason, LPVOID lpvReserved)
 {
   TRACE("(%p,%d,%p)\n", hInstDll, fdwReason, lpvReserved);
 
   switch (fdwReason) {
   case DLL_PROCESS_ATTACH:
     DisableThreadLibraryCalls(hInstDll);
     AVIFILE_hModule = hInstDll;
     break;
   case DLL_PROCESS_DETACH:
     break;
   };
 
   return TRUE;
 }