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