dlls/msdmo/dmort.c

   1 /*
   2  * Copyright (C) 2003 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 #include <stdarg.h>
  20
  21 #define COBJMACROS
  22 #define COM_NO_WINDOWS_H
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "objbase.h"
  27 #include "mediaobj.h"
  28 #include "dmort.h"
  29
  30 #include "wine/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(msdmo);
  33
  34 /***********************************************************************
  35  *        MoCreateMediaType    (MSDMO.@)
  36  *
  37  * Allocate a new media type structure
  38  */
  39 HRESULT WINAPI MoCreateMediaType(DMO_MEDIA_TYPE** ppmedia, DWORD cbFormat)
  40 {
  41     HRESULT r;
  42
  43     TRACE("%p %lu\n", ppmedia, cbFormat);
  44
  45     if (!ppmedia)
  46         return E_POINTER;
  47
  48     *ppmedia = CoTaskMemAlloc(sizeof(DMO_MEDIA_TYPE));
  49     if (!*ppmedia)
  50         return E_OUTOFMEMORY;
  51
  52     r = MoInitMediaType(*ppmedia, cbFormat);
  53     if (FAILED(r))
  54     {
  55         CoTaskMemFree(*ppmedia);
  56         *ppmedia = NULL;
  57     }
  58
  59     return r;
  60 }
  61
  62 /***********************************************************************
  63  *        MoInitMediaType        (MSDMO.@)
  64  *
  65  * Initialize media type structure
  66  */
  67 HRESULT WINAPI MoInitMediaType(DMO_MEDIA_TYPE* pmedia, DWORD cbFormat)
  68 {
  69     TRACE("%p %lu\n", pmedia, cbFormat);
  70
  71     if (!pmedia)
  72         return E_POINTER;
  73
  74     memset(pmedia, 0, sizeof(DMO_MEDIA_TYPE));
  75
  76     if (cbFormat > 0)
  77     {
  78         pmedia->pbFormat = CoTaskMemAlloc(cbFormat);
  79         if (!pmedia->pbFormat)
  80             return E_OUTOFMEMORY;
  81
  82         pmedia->cbFormat = cbFormat;
  83     }
  84
  85     return S_OK;
  86 }
  87
  88 /***********************************************************************
  89  *        MoDeleteMediaType    (MSDMO.@)
  90  *
  91  * Delete a media type structure
  92  */
  93 HRESULT WINAPI MoDeleteMediaType(DMO_MEDIA_TYPE* pmedia)
  94 {
  95     TRACE("%p\n", pmedia);
  96
  97     if (!pmedia)
  98         return E_POINTER;
  99
 100     MoFreeMediaType(pmedia);
 101     CoTaskMemFree(pmedia);
 102
 103     return S_OK;
 104 }
 105
 106 /***********************************************************************
 107  *        MoFreeMediaType        (MSDMO.@)
 108  *
 109  * Free allocated members of a media type structure
 110  */
 111 HRESULT WINAPI MoFreeMediaType(DMO_MEDIA_TYPE* pmedia)
 112 {
 113     TRACE("%p\n", pmedia);
 114
 115     if (!pmedia)
 116         return E_POINTER;
 117
 118     if (pmedia->pUnk)
 119     {
 120         IUnknown_Release(pmedia->pUnk);
 121         pmedia->pUnk = NULL;
 122     }
 123
 124     if (pmedia->pbFormat)
 125     {
 126         CoTaskMemFree(pmedia->pbFormat);
 127         pmedia->pbFormat = NULL;
 128     }
 129
 130     return S_OK;
 131 }
 132
 133 /***********************************************************************
 134  *        MoDuplicateMediaType    (MSDMO.@)
 135  *
 136  * Duplicates a media type structure
 137  */
 138 HRESULT WINAPI MoDuplicateMediaType(DMO_MEDIA_TYPE** ppdst,
 139                                     const DMO_MEDIA_TYPE* psrc)
 140 {
 141     HRESULT r;
 142
 143     TRACE("%p %p\n", ppdst, psrc);
 144
 145     if (!ppdst || !psrc)
 146         return E_POINTER;
 147
 148     *ppdst = CoTaskMemAlloc(sizeof(DMO_MEDIA_TYPE));
 149     if (!*ppdst)
 150         return E_OUTOFMEMORY;
 151
 152     r = MoCopyMediaType(*ppdst, psrc);
 153     if (FAILED(r))
 154     {
 155         MoFreeMediaType(*ppdst);
 156         *ppdst = NULL;
 157     }
 158
 159     return r;
 160 }
 161
 162 /***********************************************************************
 163  *        MoCopyMediaType        (MSDMO.@)
 164  *
 165  * Copy a new media type structure
 166  */
 167 HRESULT WINAPI MoCopyMediaType(DMO_MEDIA_TYPE* pdst,
 168                                const DMO_MEDIA_TYPE* psrc)
 169 {
 170     TRACE("%p %p\n", pdst, psrc);
 171
 172     if (!pdst || !psrc)
 173         return E_POINTER;
 174
 175     memcpy(&pdst->majortype,  &psrc->majortype,  sizeof(psrc->majortype));
 176     memcpy(&pdst->subtype,    &psrc->subtype,    sizeof(psrc->subtype));
 177     memcpy(&pdst->formattype, &psrc->formattype, sizeof(psrc->formattype));
 178
 179     pdst->bFixedSizeSamples    = psrc->bFixedSizeSamples;
 180     pdst->bTemporalCompression = psrc->bTemporalCompression;
 181     pdst->lSampleSize          = psrc->lSampleSize;
 182     pdst->cbFormat             = psrc->cbFormat;
 183
 184     if (psrc->pbFormat && psrc->cbFormat > 0)
 185     {
 186         pdst->pbFormat = CoTaskMemAlloc(psrc->cbFormat);
 187         if (!pdst->pbFormat)
 188             return E_OUTOFMEMORY;
 189
 190         memcpy(pdst->pbFormat, psrc->pbFormat, psrc->cbFormat);
 191     }
 192     else
 193         pdst->pbFormat = NULL;
 194
 195     if (psrc->pUnk)
 196     {
 197         pdst->pUnk = psrc->pUnk;
 198         IUnknown_AddRef(pdst->pUnk);
 199     }
 200     else
 201         pdst->pUnk = NULL;
 202
 203     return S_OK;
 204 }