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 }
327