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