factory.c

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/*
 * 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 "rpcproxy.h"
 
#include "initguid.h"
#include "vfw.h"
#include "avifile_private.h"
 
#include "wine/debug.h"
 
WINE_DEFAULT_DEBUG_CHANNEL(avifile);
 
HMODULE AVIFILE_hModule   = NULL;
 
typedef struct
{
  IClassFactory IClassFactory_iface;
  LONG ref;
  CLSID clsid;
} IClassFactoryImpl;
 
static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
{
  return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
}
 
static HRESULT WINAPI IClassFactory_fnQueryInterface(IClassFactory *iface, REFIID riid,
        void **ppobj)
{
  TRACE("(%p,%s,%p)\n", iface, debugstr_guid(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(IClassFactory *iface)
{
    IClassFactoryImpl *This = impl_from_IClassFactory(iface);
    ULONG ref = InterlockedIncrement(&This->ref);
 
    TRACE("(%p) ref = %lu\n", This, ref);
    return ref;
}
 
static ULONG WINAPI IClassFactory_fnRelease(IClassFactory *iface)
{
    IClassFactoryImpl *This = impl_from_IClassFactory(iface);
    ULONG ref = InterlockedDecrement(&This->ref);
 
    TRACE("(%p) ref = %lu\n", This, ref);
 
    if(!ref)
        free(This);
 
    return ref;
}
 
static HRESULT WINAPI IClassFactory_fnCreateInstance(IClassFactory *iface, IUnknown *pOuter,
        REFIID riid, void **ppobj)
{
  IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 
  TRACE("(%p,%p,%s,%p)\n", iface, pOuter, debugstr_guid(riid),
    ppobj);
 
  if (!ppobj)
    return E_INVALIDARG;
  *ppobj = NULL;
 
  if (pOuter && !IsEqualGUID(&IID_IUnknown, riid))
    return E_INVALIDARG;
 
  if (IsEqualGUID(&CLSID_AVIFile, &This->clsid))
    return AVIFILE_CreateAVIFile(pOuter, riid, ppobj);
  if (IsEqualGUID(&CLSID_WAVFile, &This->clsid))
    return AVIFILE_CreateWAVFile(pOuter, riid, ppobj);
 
  if (pOuter)
    return CLASS_E_NOAGGREGATION;
 
  if (IsEqualGUID(&CLSID_ICMStream, &This->clsid))
    return AVIFILE_CreateICMStream(riid,ppobj);
  if (IsEqualGUID(&CLSID_ACMStream, &This->clsid))
    return AVIFILE_CreateACMStream(riid,ppobj);
 
  return E_NOINTERFACE;
}
 
static HRESULT WINAPI IClassFactory_fnLockServer(IClassFactory *iface, BOOL dolock)
{
  TRACE("(%p,%d)\n",iface,dolock);
 
  return S_OK;
}
 
static const IClassFactoryVtbl iclassfact = {
    IClassFactory_fnQueryInterface,
    IClassFactory_fnAddRef,
    IClassFactory_fnRelease,
    IClassFactory_fnCreateInstance,
    IClassFactory_fnLockServer
};
 
static HRESULT AVIFILE_CreateClassFactory(const CLSID *clsid, const IID *riid, void **ppv)
{
    IClassFactoryImpl *cf;
    HRESULT hr;
 
    *ppv = NULL;
 
    cf = malloc(sizeof(*cf));
    if (!cf)
        return E_OUTOFMEMORY;
 
    cf->IClassFactory_iface.lpVtbl = &iclassfact;
    cf->ref = 1;
    cf->clsid = *clsid;
 
    hr = IClassFactory_QueryInterface(&cf->IClassFactory_iface, riid, ppv);
    IClassFactory_Release(&cf->IClassFactory_iface);
 
    return hr;
}
 
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)
{
  HRESULT hr;
 
  TRACE("(%s,%s,%p)\n", debugstr_guid(pclsid), debugstr_guid(piid), ppv);
 
  if (pclsid == NULL || piid == NULL || ppv == NULL)
    return E_FAIL;
 
  hr = AVIFILE_CreateClassFactory(pclsid,piid,ppv);
  if (SUCCEEDED(hr))
    return hr;
 
  return avifil32_DllGetClassObject(pclsid,piid,ppv);
}
 
/*****************************************************************************
 *      DllMain     [AVIFIL32.init]
 */
BOOL WINAPI DllMain(HINSTANCE hInstDll, DWORD fdwReason, LPVOID lpvReserved)
{
  TRACE("(%p,%ld,%p)\n", hInstDll, fdwReason, lpvReserved);
 
  switch (fdwReason) {
  case DLL_PROCESS_ATTACH:
    DisableThreadLibraryCalls(hInstDll);
    AVIFILE_hModule = hInstDll;
    break;
  };
 
  return TRUE;
}