dll/win32/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 #define WIN32_NO_STATUS
  21 #define _INC_WINDOWS
  22 #define COM_NO_WINDOWS_H
  23
  24 #include <config.h>
  25
  26 #include <stdarg.h>
  27
  28 #define COBJMACROS
  29
  30 #include <windef.h>
  31 #include <winbase.h>
  32 #include <ole2.h>
  33 #include <wincodec.h>
  34 #include <wine/unicode.h>
  35
  36 //#include "wincodecs_private.h"
  37
  38 #include <wine/debug.h>
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  41
  42 typedef struct PropertyBag {
  43     IPropertyBag2 IPropertyBag2_iface;
  44     LONG ref;
  45     UINT prop_count;
  46     PROPBAG2 *properties;
  47     VARIANT *values;
  48 } PropertyBag;
  49
  50 static inline PropertyBag *impl_from_IPropertyBag2(IPropertyBag2 *iface)
  51 {
  52     return CONTAINING_RECORD(iface, PropertyBag, IPropertyBag2_iface);
  53 }
  54
  55 static HRESULT WINAPI PropertyBag_QueryInterface(IPropertyBag2 *iface, REFIID iid,
  56     void **ppv)
  57 {
  58     PropertyBag *This = impl_from_IPropertyBag2(iface);
  59     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  60
  61     if (!ppv) return E_INVALIDARG;
  62
  63     if (IsEqualIID(&IID_IUnknown, iid) ||
  64         IsEqualIID(&IID_IPropertyBag2, iid))
  65     {
  66         *ppv = &This->IPropertyBag2_iface;
  67     }
  68     else
  69     {
  70         *ppv = NULL;
  71         return E_NOINTERFACE;
  72     }
  73
  74     IUnknown_AddRef((IUnknown*)*ppv);
  75     return S_OK;
  76 }
  77
  78 static ULONG WINAPI PropertyBag_AddRef(IPropertyBag2 *iface)
  79 {
  80     PropertyBag *This = impl_from_IPropertyBag2(iface);
  81     ULONG ref = InterlockedIncrement(&This->ref);
  82
  83     TRACE("(%p) refcount=%u\n", iface, ref);
  84
  85     return ref;
  86 }
  87
  88 static ULONG WINAPI PropertyBag_Release(IPropertyBag2 *iface)
  89 {
  90     PropertyBag *This = impl_from_IPropertyBag2(iface);
  91     ULONG ref = InterlockedDecrement(&This->ref);
  92
  93     TRACE("(%p) refcount=%u\n", iface, ref);
  94
  95     if (ref == 0)
  96     {
  97         ULONG i;
  98         if (This->properties && This->values)
  99         {
 100             for (i=0; i < This->prop_count; i++)
 101             {
 102                 HeapFree(GetProcessHeap(), 0, This->properties[i].pstrName);
 103                 VariantClear( This->values+i );
 104             }
 105         }
 106
 107         HeapFree(GetProcessHeap(), 0, This->properties);
 108         HeapFree(GetProcessHeap(), 0, This->values);
 109         HeapFree(GetProcessHeap(), 0, This);
 110     }
 111
 112     return ref;
 113 }
 114
 115 static LONG find_item(PropertyBag *This, LPCOLESTR name)
 116 {
 117     LONG i;
 118     if (!This->properties)
 119         return -1;
 120     if (!name)
 121         return -1;
 122
 123     for (i=0; i < This->prop_count; i++)
 124     {
 125         if (strcmpW(name, This->properties[i].pstrName) == 0)
 126             return i;
 127     }
 128
 129     return -1;
 130 }
 131
 132 static HRESULT WINAPI PropertyBag_Read(IPropertyBag2 *iface, ULONG cProperties,
 133     PROPBAG2 *pPropBag, IErrorLog *pErrLog, VARIANT *pvarValue, HRESULT *phrError)
 134 {
 135     HRESULT res = S_OK;
 136     ULONG i;
 137     PropertyBag *This = impl_from_IPropertyBag2(iface);
 138
 139     TRACE("(%p,%u,%p,%p,%p,%p)\n", iface, cProperties, pPropBag, pErrLog, pvarValue, phrError);
 140
 141     for (i=0; i < cProperties; i++)
 142     {
 143         LONG idx;
 144         if (pPropBag[i].dwHint && pPropBag[i].dwHint <= This->prop_count)
 145             idx = pPropBag[i].dwHint-1;
 146         else
 147             idx = find_item(This, pPropBag[i].pstrName);
 148
 149         if (idx > -1)
 150         {
 151             VariantInit(pvarValue+i);
 152             res = VariantCopy(pvarValue+i, This->values+idx);
 153             if (FAILED(res))
 154                 break;
 155             phrError[i] = res;
 156         }
 157         else
 158         {
 159             res = E_FAIL;
 160             break;
 161         }
 162     }
 163
 164     return res;
 165 }
 166
 167 static HRESULT WINAPI PropertyBag_Write(IPropertyBag2 *iface, ULONG cProperties,
 168     PROPBAG2 *pPropBag, VARIANT *pvarValue)
 169 {
 170     HRESULT res = S_OK;
 171     ULONG i;
 172     PropertyBag *This = impl_from_IPropertyBag2(iface);
 173
 174     TRACE("(%p,%u,%p,%p)\n", iface, cProperties, pPropBag, pvarValue);
 175
 176     for (i=0; i < cProperties; i++)
 177     {
 178         LONG idx;
 179         if (pPropBag[i].dwHint && pPropBag[i].dwHint <= This->prop_count)
 180             idx = pPropBag[i].dwHint-1;
 181         else
 182             idx = find_item(This, pPropBag[i].pstrName);
 183
 184         if (idx > -1)
 185         {
 186             if (This->properties[idx].vt != V_VT(pvarValue+i))
 187                 return WINCODEC_ERR_PROPERTYUNEXPECTEDTYPE;
 188             res = VariantCopy(This->values+idx, pvarValue+i);
 189             if (FAILED(res))
 190                 return E_FAIL;
 191         }
 192         else
 193         {
 194             if (pPropBag[i].pstrName)
 195                 FIXME("Application tried to set the unknown option %s.\n",
 196                       debugstr_w(pPropBag[i].pstrName));
 197
 198             /* FIXME: Function is not atomar on error, but MSDN does not say anything about it
 199              *        (no reset of items between 0 and i-1) */
 200             return E_FAIL;
 201         }
 202     }
 203
 204     return res;
 205 }
 206
 207 static HRESULT WINAPI PropertyBag_CountProperties(IPropertyBag2 *iface, ULONG *pcProperties)
 208 {
 209     PropertyBag *This = impl_from_IPropertyBag2(iface);
 210
 211     TRACE("(%p,%p)\n", iface, pcProperties);
 212
 213     if (!pcProperties)
 214         return E_INVALIDARG;
 215
 216     *pcProperties = This->prop_count;
 217
 218     return S_OK;
 219 }
 220
 221 static HRESULT copy_propbag2(PROPBAG2 *dest, PROPBAG2 *src, BOOL useCoAlloc)
 222 {
 223     dest->cfType = src->cfType;
 224     dest->clsid = src->clsid;
 225     dest->dwHint = src->dwHint;
 226     dest->dwType = src->dwType;
 227     dest->vt = src->vt;
 228     if(useCoAlloc)
 229         dest->pstrName = CoTaskMemAlloc((strlenW(src->pstrName)+1) * sizeof(WCHAR));
 230     else
 231         dest->pstrName = HeapAlloc(GetProcessHeap(), 0, (strlenW(src->pstrName)+1) * sizeof(WCHAR));
 232
 233     if(!dest->pstrName)
 234         return E_OUTOFMEMORY;
 235
 236     strcpyW(dest->pstrName, src->pstrName);
 237
 238     return S_OK;
 239 }
 240
 241 static HRESULT WINAPI PropertyBag_GetPropertyInfo(IPropertyBag2 *iface, ULONG iProperty,
 242     ULONG cProperties, PROPBAG2 *pPropBag, ULONG *pcProperties)
 243 {
 244     HRESULT res = S_OK;
 245     ULONG i;
 246     PropertyBag *This = impl_from_IPropertyBag2(iface);
 247
 248     TRACE("(%p,%u,%u,%p,%p)\n", iface, iProperty, cProperties, pPropBag, pcProperties);
 249
 250     if (iProperty >= This->prop_count && iProperty > 0)
 251         return WINCODEC_ERR_VALUEOUTOFRANGE;
 252     if (iProperty+cProperties > This->prop_count )
 253         return WINCODEC_ERR_VALUEOUTOFRANGE;
 254
 255     *pcProperties = max(cProperties, This->prop_count-iProperty);
 256
 257     for (i=0; i < *pcProperties; i++)
 258     {
 259         res = copy_propbag2(pPropBag+i, This->properties+iProperty+i, TRUE);
 260         if (FAILED(res))
 261         {
 262             do {
 263                 CoTaskMemFree( pPropBag[--i].pstrName );
 264             } while (i);
 265             break;
 266         }
 267     }
 268
 269     return res;
 270 }
 271
 272 static HRESULT WINAPI PropertyBag_LoadObject(IPropertyBag2 *iface, LPCOLESTR pstrName,
 273     DWORD dwHint, IUnknown *pUnkObject, IErrorLog *pErrLog)
 274 {
 275     FIXME("(%p,%s,%u,%p,%p): stub\n", iface, debugstr_w(pstrName), dwHint, pUnkObject, pErrLog);
 276     return E_NOTIMPL;
 277 }
 278
 279 static const IPropertyBag2Vtbl PropertyBag_Vtbl = {
 280     PropertyBag_QueryInterface,
 281     PropertyBag_AddRef,
 282     PropertyBag_Release,
 283     PropertyBag_Read,
 284     PropertyBag_Write,
 285     PropertyBag_CountProperties,
 286     PropertyBag_GetPropertyInfo,
 287     PropertyBag_LoadObject
 288 };
 289
 290 HRESULT CreatePropertyBag2(PROPBAG2 *options, UINT count,
 291                            IPropertyBag2 **ppPropertyBag2)
 292 {
 293     UINT i;
 294     HRESULT res = S_OK;
 295     PropertyBag *This;
 296
 297     This = HeapAlloc(GetProcessHeap(), 0, sizeof(PropertyBag));
 298     if (!This) return E_OUTOFMEMORY;
 299
 300     This->IPropertyBag2_iface.lpVtbl = &PropertyBag_Vtbl;
 301     This->ref = 1;
 302     This->prop_count = count;
 303
 304     if (count == 0)
 305     {
 306         This->properties = NULL;
 307         This->values = NULL;
 308     }
 309     else
 310     {
 311         This->properties = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(PROPBAG2)*count);
 312         This->values = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(VARIANT)*count);
 313
 314         if (!This->properties || !This->values)
 315             res = E_OUTOFMEMORY;
 316         else
 317             for (i=0; i < count; i++)
 318             {
 319                 res = copy_propbag2(This->properties+i, options+i, FALSE);
 320                 if (FAILED(res))
 321                     break;
 322                 This->properties[i].dwHint = i+1; /* 0 means unset, so we start with 1 */
 323             }
 324     }
 325
 326     if (FAILED(res))
 327     {
 328         PropertyBag_Release(&This->IPropertyBag2_iface);
 329         *ppPropertyBag2 = NULL;
 330     }
 331     else
 332         *ppPropertyBag2 = &This->IPropertyBag2_iface;
 333
 334     return res;
 335 }