Sweden-Number/dlls/strmbase/dispatch.c

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/*
* ITypeInfo cache for IDispatch
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*
* Copyright 2019 Zebediah Figura
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*
* 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 "strmbase_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
static ITypeLib *control_typelib;
static ITypeInfo *control_typeinfo[last_tid];
static REFIID control_tid_id[] =
{
&IID_IBasicAudio,
&IID_IBasicVideo,
&IID_IMediaControl,
&IID_IMediaEvent,
&IID_IMediaPosition,
&IID_IVideoWindow,
};
HRESULT strmbase_get_typeinfo(enum strmbase_type_id tid, ITypeInfo **ret)
{
HRESULT hr;
if (!control_typelib)
{
ITypeLib *typelib;
hr = LoadRegTypeLib(&LIBID_QuartzTypeLib, 1, 0, LOCALE_SYSTEM_DEFAULT, &typelib);
if (FAILED(hr))
{
ERR("Failed to load typelib, hr %#x.\n", hr);
return hr;
}
if (InterlockedCompareExchangePointer((void **)&control_typelib, typelib, NULL))
ITypeLib_Release(typelib);
}
if (!control_typeinfo[tid])
{
ITypeInfo *typeinfo;
hr = ITypeLib_GetTypeInfoOfGuid(control_typelib, control_tid_id[tid], &typeinfo);
if (FAILED(hr))
{
ERR("Failed to get type info for %s, hr %#x.\n", debugstr_guid(control_tid_id[tid]), hr);
return hr;
}
if (InterlockedCompareExchangePointer((void **)(control_typeinfo + tid), typeinfo, NULL))
ITypeInfo_Release(typeinfo);
}
ITypeInfo_AddRef(*ret = control_typeinfo[tid]);
return S_OK;
}
void strmbase_release_typelibs(void)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(control_typeinfo); ++i)
{
if (control_typeinfo[i])
ITypeInfo_Release(control_typeinfo[i]);
}
if (control_typelib)
ITypeLib_Release(control_typelib);
}