79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
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/*
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* Implementation of MedaType utility functions
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*
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* Copyright 2003 Robert Shearman
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* Copyright 2010 Aric Stewart, CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#define COBJMACROS
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#include "dshow.h"
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#include "wine/strmbase.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
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HRESULT WINAPI CopyMediaType(AM_MEDIA_TYPE * pDest, const AM_MEDIA_TYPE *pSrc)
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{
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*pDest = *pSrc;
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if (!pSrc->pbFormat) return S_OK;
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if (!(pDest->pbFormat = CoTaskMemAlloc(pSrc->cbFormat)))
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return E_OUTOFMEMORY;
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memcpy(pDest->pbFormat, pSrc->pbFormat, pSrc->cbFormat);
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if (pDest->pUnk)
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IUnknown_AddRef(pDest->pUnk);
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return S_OK;
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}
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void WINAPI FreeMediaType(AM_MEDIA_TYPE * pMediaType)
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{
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if (pMediaType->pbFormat)
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{
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CoTaskMemFree(pMediaType->pbFormat);
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pMediaType->pbFormat = NULL;
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}
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if (pMediaType->pUnk)
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{
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IUnknown_Release(pMediaType->pUnk);
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pMediaType->pUnk = NULL;
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}
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}
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AM_MEDIA_TYPE * WINAPI CreateMediaType(AM_MEDIA_TYPE const * pSrc)
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{
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AM_MEDIA_TYPE * pDest;
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pDest = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
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if (!pDest)
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return NULL;
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if (FAILED(CopyMediaType(pDest, pSrc)))
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{
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CoTaskMemFree(pDest);
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return NULL;
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}
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return pDest;
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}
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void WINAPI DeleteMediaType(AM_MEDIA_TYPE * pMediaType)
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{
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FreeMediaType(pMediaType);
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CoTaskMemFree(pMediaType);
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}
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