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