dlls/windowscodecs/propertybag.c

   1 /*
   2  * Copyright 2009 Vincent Povirk for CodeWeavers
   3  * Copyright 2013 Ludger Sprenker
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "config.h"
  21
  22 #include <stdarg.h>
  23
  24 #define COBJMACROS
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "objbase.h"
  29 #include "wincodec.h"
  30 #include "wine/unicode.h"
  31
  32 #include "wincodecs_private.h"
  33
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  37
  38 typedef struct PropertyBag {
  39     IPropertyBag2 IPropertyBag2_iface;
  40     LONG ref;
  41     UINT prop_count;
  42     PROPBAG2 *properties;
  43 } PropertyBag;
  44
  45 static inline PropertyBag *impl_from_IPropertyBag2(IPropertyBag2 *iface)
  46 {
  47     return CONTAINING_RECORD(iface, PropertyBag, IPropertyBag2_iface);
  48 }
  49
  50 static HRESULT WINAPI PropertyBag_QueryInterface(IPropertyBag2 *iface, REFIID iid,
  51     void **ppv)
  52 {
  53     PropertyBag *This = impl_from_IPropertyBag2(iface);
  54     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  55
  56     if (!ppv) return E_INVALIDARG;
  57
  58     if (IsEqualIID(&IID_IUnknown, iid) ||
  59         IsEqualIID(&IID_IPropertyBag2, iid))
  60     {
  61         *ppv = &This->IPropertyBag2_iface;
  62     }
  63     else
  64     {
  65         *ppv = NULL;
  66         return E_NOINTERFACE;
  67     }
  68
  69     IUnknown_AddRef((IUnknown*)*ppv);
  70     return S_OK;
  71 }
  72
  73 static ULONG WINAPI PropertyBag_AddRef(IPropertyBag2 *iface)
  74 {
  75     PropertyBag *This = impl_from_IPropertyBag2(iface);
  76     ULONG ref = InterlockedIncrement(&This->ref);
  77
  78     TRACE("(%p) refcount=%u\n", iface, ref);
  79
  80     return ref;
  81 }
  82
  83 static ULONG WINAPI PropertyBag_Release(IPropertyBag2 *iface)
  84 {
  85     PropertyBag *This = impl_from_IPropertyBag2(iface);
  86     ULONG ref = InterlockedDecrement(&This->ref);
  87
  88     TRACE("(%p) refcount=%u\n", iface, ref);
  89
  90     if (ref == 0)
  91     {
  92         ULONG i;
  93         if (This->properties)
  94         {
  95             for (i=0; i < This->prop_count; i++)
  96             {
  97                 HeapFree(GetProcessHeap(), 0, This->properties[i].pstrName);
  98             }
  99         }
 100
 101         HeapFree(GetProcessHeap(), 0, This->properties);
 102         HeapFree(GetProcessHeap(), 0, This);
 103     }
 104
 105     return ref;
 106 }
 107
 108 static HRESULT WINAPI PropertyBag_Read(IPropertyBag2 *iface, ULONG cProperties,
 109     PROPBAG2 *pPropBag, IErrorLog *pErrLog, VARIANT *pvarValue, HRESULT *phrError)
 110 {
 111     FIXME("(%p,%u,%p,%p,%p,%p): stub\n", iface, cProperties, pPropBag, pErrLog, pvarValue, phrError);
 112     return E_NOTIMPL;
 113 }
 114
 115 static HRESULT WINAPI PropertyBag_Write(IPropertyBag2 *iface, ULONG cProperties,
 116     PROPBAG2 *pPropBag, VARIANT *pvarValue)
 117 {
 118     FIXME("(%p,%u,%p,%p): stub\n", iface, cProperties, pPropBag, pvarValue);
 119     return E_NOTIMPL;
 120 }
 121
 122 static HRESULT WINAPI PropertyBag_CountProperties(IPropertyBag2 *iface, ULONG *pcProperties)
 123 {
 124     PropertyBag *This = impl_from_IPropertyBag2(iface);
 125
 126     TRACE("(%p,%p)\n", iface, pcProperties);
 127
 128     if (!pcProperties)
 129         return E_INVALIDARG;
 130
 131     *pcProperties = This->prop_count;
 132
 133     return S_OK;
 134 }
 135
 136 static HRESULT copy_propbag2(PROPBAG2 *dest, PROPBAG2 *src, BOOL useCoAlloc)
 137 {
 138     dest->cfType = src->cfType;
 139     dest->clsid = src->clsid;
 140     dest->dwHint = src->dwHint;
 141     dest->dwType = src->dwType;
 142     dest->vt = src->vt;
 143     if(useCoAlloc)
 144         dest->pstrName = CoTaskMemAlloc((strlenW(src->pstrName)+1) * sizeof(WCHAR));
 145     else
 146         dest->pstrName = HeapAlloc(GetProcessHeap(), 0, (strlenW(src->pstrName)+1) * sizeof(WCHAR));
 147
 148     if(!dest->pstrName)
 149         return E_OUTOFMEMORY;
 150
 151     strcpyW(dest->pstrName, src->pstrName);
 152
 153     return S_OK;
 154 }
 155
 156 static HRESULT WINAPI PropertyBag_GetPropertyInfo(IPropertyBag2 *iface, ULONG iProperty,
 157     ULONG cProperties, PROPBAG2 *pPropBag, ULONG *pcProperties)
 158 {
 159     HRESULT res = S_OK;
 160     ULONG i;
 161     PropertyBag *This = impl_from_IPropertyBag2(iface);
 162
 163     TRACE("(%p,%u,%u,%p,%p)\n", iface, iProperty, cProperties, pPropBag, pcProperties);
 164
 165     if (iProperty >= This->prop_count && iProperty > 0)
 166         return WINCODEC_ERR_VALUEOUTOFRANGE;
 167     if (iProperty+cProperties > This->prop_count )
 168         return WINCODEC_ERR_VALUEOUTOFRANGE;
 169
 170     *pcProperties = max(cProperties, This->prop_count-iProperty);
 171
 172     for (i=0; i < *pcProperties; i++)
 173     {
 174         res = copy_propbag2(pPropBag+i, This->properties+iProperty+i, TRUE);
 175         if (FAILED(res))
 176         {
 177             do {
 178                 CoTaskMemFree( pPropBag[--i].pstrName );
 179             } while (i);
 180             break;
 181         }
 182     }
 183
 184     return res;
 185 }
 186
 187 static HRESULT WINAPI PropertyBag_LoadObject(IPropertyBag2 *iface, LPCOLESTR pstrName,
 188     DWORD dwHint, IUnknown *pUnkObject, IErrorLog *pErrLog)
 189 {
 190     FIXME("(%p,%s,%u,%p,%p): stub\n", iface, debugstr_w(pstrName), dwHint, pUnkObject, pErrLog);
 191     return E_NOTIMPL;
 192 }
 193
 194 static const IPropertyBag2Vtbl PropertyBag_Vtbl = {
 195     PropertyBag_QueryInterface,
 196     PropertyBag_AddRef,
 197     PropertyBag_Release,
 198     PropertyBag_Read,
 199     PropertyBag_Write,
 200     PropertyBag_CountProperties,
 201     PropertyBag_GetPropertyInfo,
 202     PropertyBag_LoadObject
 203 };
 204
 205 HRESULT CreatePropertyBag2(PROPBAG2 *options, UINT count,
 206                            IPropertyBag2 **ppPropertyBag2)
 207 {
 208     UINT i;
 209     HRESULT res = S_OK;
 210     PropertyBag *This;
 211
 212     This = HeapAlloc(GetProcessHeap(), 0, sizeof(PropertyBag));
 213     if (!This) return E_OUTOFMEMORY;
 214
 215     This->IPropertyBag2_iface.lpVtbl = &PropertyBag_Vtbl;
 216     This->ref = 1;
 217     This->prop_count = count;
 218
 219     if (count == 0)
 220     {
 221         This->properties = NULL;
 222     }
 223     else
 224     {
 225         This->properties = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(PROPBAG2)*count);
 226
 227         if (!This->properties)
 228             res = E_OUTOFMEMORY;
 229         else
 230             for (i=0; i < count; i++)
 231             {
 232                 res = copy_propbag2(This->properties+i, options+i, FALSE);
 233                 if (FAILED(res))
 234                     break;
 235                 This->properties[i].dwHint = i+1; /* 0 means unset, so we start with 1 */
 236             }
 237     }
 238
 239     if (FAILED(res))
 240     {
 241         PropertyBag_Release(&This->IPropertyBag2_iface);
 242         *ppPropertyBag2 = NULL;
 243     }
 244     else
 245         *ppPropertyBag2 = &This->IPropertyBag2_iface;
 246
 247     return res;
 248 }