File: | render/filter.c |
Location: | line 339, column 30 |
Description: | Call to 'malloc' has an allocation size of 0 bytes |
1 | /* | |||
2 | * Copyright © 2002 Keith Packard | |||
3 | * | |||
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |||
5 | * documentation for any purpose is hereby granted without fee, provided that | |||
6 | * the above copyright notice appear in all copies and that both that | |||
7 | * copyright notice and this permission notice appear in supporting | |||
8 | * documentation, and that the name of Keith Packard not be used in | |||
9 | * advertising or publicity pertaining to distribution of the software without | |||
10 | * specific, written prior permission. Keith Packard makes no | |||
11 | * representations about the suitability of this software for any purpose. It | |||
12 | * is provided "as is" without express or implied warranty. | |||
13 | * | |||
14 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |||
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |||
16 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |||
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |||
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |||
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |||
20 | * PERFORMANCE OF THIS SOFTWARE. | |||
21 | */ | |||
22 | ||||
23 | #ifdef HAVE_DIX_CONFIG_H1 | |||
24 | #include <dix-config.h> | |||
25 | #endif | |||
26 | ||||
27 | #include "misc.h" | |||
28 | #include "scrnintstr.h" | |||
29 | #include "os.h" | |||
30 | #include "regionstr.h" | |||
31 | #include "validate.h" | |||
32 | #include "windowstr.h" | |||
33 | #include "input.h" | |||
34 | #include "resource.h" | |||
35 | #include "colormapst.h" | |||
36 | #include "cursorstr.h" | |||
37 | #include "dixstruct.h" | |||
38 | #include "gcstruct.h" | |||
39 | #include "servermd.h" | |||
40 | #include "picturestr.h" | |||
41 | ||||
42 | static char **filterNames; | |||
43 | static int nfilterNames; | |||
44 | ||||
45 | /* | |||
46 | * standard but not required filters don't have constant indices | |||
47 | */ | |||
48 | ||||
49 | int | |||
50 | PictureGetFilterId(const char *filter, int len, Bool makeit) | |||
51 | { | |||
52 | int i; | |||
53 | char *name; | |||
54 | char **names; | |||
55 | ||||
56 | if (len < 0) | |||
57 | len = strlen(filter); | |||
58 | for (i = 0; i < nfilterNames; i++) | |||
59 | if (!CompareISOLatin1Lowered((const unsigned char *) filterNames[i], -1, | |||
60 | (const unsigned char *) filter, len)) | |||
61 | return i; | |||
62 | if (!makeit) | |||
63 | return -1; | |||
64 | name = malloc(len + 1); | |||
65 | if (!name) | |||
66 | return -1; | |||
67 | memcpy(name, filter, len)__builtin___memcpy_chk (name, filter, len, __builtin_object_size (name, 0)); | |||
68 | name[len] = '\0'; | |||
69 | if (filterNames) | |||
70 | names = realloc(filterNames, (nfilterNames + 1) * sizeof(char *)); | |||
71 | else | |||
72 | names = malloc(sizeof(char *)); | |||
73 | if (!names) { | |||
74 | free(name); | |||
75 | return -1; | |||
76 | } | |||
77 | filterNames = names; | |||
78 | i = nfilterNames++; | |||
79 | filterNames[i] = name; | |||
80 | return i; | |||
81 | } | |||
82 | ||||
83 | static Bool | |||
84 | PictureSetDefaultIds(void) | |||
85 | { | |||
86 | /* careful here -- this list must match the #define values */ | |||
87 | ||||
88 | if (PictureGetFilterId(FilterNearest"nearest", -1, TRUE1) != PictFilterNearest0) | |||
89 | return FALSE0; | |||
90 | if (PictureGetFilterId(FilterBilinear"bilinear", -1, TRUE1) != PictFilterBilinear1) | |||
91 | return FALSE0; | |||
92 | ||||
93 | if (PictureGetFilterId(FilterFast"fast", -1, TRUE1) != PictFilterFast2) | |||
94 | return FALSE0; | |||
95 | if (PictureGetFilterId(FilterGood"good", -1, TRUE1) != PictFilterGood3) | |||
96 | return FALSE0; | |||
97 | if (PictureGetFilterId(FilterBest"best", -1, TRUE1) != PictFilterBest4) | |||
98 | return FALSE0; | |||
99 | ||||
100 | if (PictureGetFilterId(FilterConvolution"convolution", -1, TRUE1) != | |||
101 | PictFilterConvolution5) | |||
102 | return FALSE0; | |||
103 | return TRUE1; | |||
104 | } | |||
105 | ||||
106 | char * | |||
107 | PictureGetFilterName(int id) | |||
108 | { | |||
109 | if (0 <= id && id < nfilterNames) | |||
110 | return filterNames[id]; | |||
111 | else | |||
112 | return 0; | |||
113 | } | |||
114 | ||||
115 | static void | |||
116 | PictureFreeFilterIds(void) | |||
117 | { | |||
118 | int i; | |||
119 | ||||
120 | for (i = 0; i < nfilterNames; i++) | |||
121 | free(filterNames[i]); | |||
122 | free(filterNames); | |||
123 | nfilterNames = 0; | |||
124 | filterNames = 0; | |||
125 | } | |||
126 | ||||
127 | int | |||
128 | PictureAddFilter(ScreenPtr pScreen, | |||
129 | const char *filter, | |||
130 | PictFilterValidateParamsProcPtr ValidateParams, | |||
131 | int width, int height) | |||
132 | { | |||
133 | PictureScreenPtr ps = GetPictureScreen(pScreen)((PictureScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates , (&PictureScreenPrivateKeyRec))); | |||
134 | int id = PictureGetFilterId(filter, -1, TRUE1); | |||
135 | int i; | |||
136 | PictFilterPtr filters; | |||
137 | ||||
138 | if (id < 0) | |||
139 | return -1; | |||
140 | /* | |||
141 | * It's an error to attempt to reregister a filter | |||
142 | */ | |||
143 | for (i = 0; i < ps->nfilters; i++) | |||
144 | if (ps->filters[i].id == id) | |||
145 | return -1; | |||
146 | if (ps->filters) | |||
147 | filters = | |||
148 | realloc(ps->filters, (ps->nfilters + 1) * sizeof(PictFilterRec)); | |||
149 | else | |||
150 | filters = malloc(sizeof(PictFilterRec)); | |||
151 | if (!filters) | |||
152 | return -1; | |||
153 | ps->filters = filters; | |||
154 | i = ps->nfilters++; | |||
155 | ps->filters[i].name = PictureGetFilterName(id); | |||
156 | ps->filters[i].id = id; | |||
157 | ps->filters[i].ValidateParams = ValidateParams; | |||
158 | ps->filters[i].width = width; | |||
159 | ps->filters[i].height = height; | |||
160 | return id; | |||
161 | } | |||
162 | ||||
163 | Bool | |||
164 | PictureSetFilterAlias(ScreenPtr pScreen, const char *filter, const char *alias) | |||
165 | { | |||
166 | PictureScreenPtr ps = GetPictureScreen(pScreen)((PictureScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates , (&PictureScreenPrivateKeyRec))); | |||
167 | int filter_id = PictureGetFilterId(filter, -1, FALSE0); | |||
168 | int alias_id = PictureGetFilterId(alias, -1, TRUE1); | |||
169 | int i; | |||
170 | ||||
171 | if (filter_id < 0 || alias_id < 0) | |||
172 | return FALSE0; | |||
173 | for (i = 0; i < ps->nfilterAliases; i++) | |||
174 | if (ps->filterAliases[i].alias_id == alias_id) | |||
175 | break; | |||
176 | if (i == ps->nfilterAliases) { | |||
177 | PictFilterAliasPtr aliases; | |||
178 | ||||
179 | if (ps->filterAliases) | |||
180 | aliases = realloc(ps->filterAliases, | |||
181 | (ps->nfilterAliases + 1) * | |||
182 | sizeof(PictFilterAliasRec)); | |||
183 | else | |||
184 | aliases = malloc(sizeof(PictFilterAliasRec)); | |||
185 | if (!aliases) | |||
186 | return FALSE0; | |||
187 | ps->filterAliases = aliases; | |||
188 | ps->filterAliases[i].alias = PictureGetFilterName(alias_id); | |||
189 | ps->filterAliases[i].alias_id = alias_id; | |||
190 | ps->nfilterAliases++; | |||
191 | } | |||
192 | ps->filterAliases[i].filter_id = filter_id; | |||
193 | return TRUE1; | |||
194 | } | |||
195 | ||||
196 | PictFilterPtr | |||
197 | PictureFindFilter(ScreenPtr pScreen, char *name, int len) | |||
198 | { | |||
199 | PictureScreenPtr ps = GetPictureScreen(pScreen)((PictureScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates , (&PictureScreenPrivateKeyRec))); | |||
200 | int id = PictureGetFilterId(name, len, FALSE0); | |||
201 | int i; | |||
202 | ||||
203 | if (id < 0) | |||
204 | return 0; | |||
205 | /* Check for an alias, allow them to recurse */ | |||
206 | for (i = 0; i < ps->nfilterAliases; i++) | |||
207 | if (ps->filterAliases[i].alias_id == id) { | |||
208 | id = ps->filterAliases[i].filter_id; | |||
209 | i = 0; | |||
210 | } | |||
211 | /* find the filter */ | |||
212 | for (i = 0; i < ps->nfilters; i++) | |||
213 | if (ps->filters[i].id == id) | |||
214 | return &ps->filters[i]; | |||
215 | return 0; | |||
216 | } | |||
217 | ||||
218 | static Bool | |||
219 | convolutionFilterValidateParams(ScreenPtr pScreen, | |||
220 | int filter, | |||
221 | xFixed * params, | |||
222 | int nparams, int *width, int *height) | |||
223 | { | |||
224 | int w, h; | |||
225 | ||||
226 | if (nparams < 3) | |||
227 | return FALSE0; | |||
228 | ||||
229 | if (xFixedFrac(params[0])((params[0]) & ((((pixman_fixed_t) ((1) << 16))) - ( (pixman_fixed_t) 1))) || xFixedFrac(params[1])((params[1]) & ((((pixman_fixed_t) ((1) << 16))) - ( (pixman_fixed_t) 1)))) | |||
230 | return FALSE0; | |||
231 | ||||
232 | w = xFixedToInt(params[0])((int) ((params[0]) >> 16)); | |||
233 | h = xFixedToInt(params[1])((int) ((params[1]) >> 16)); | |||
234 | ||||
235 | nparams -= 2; | |||
236 | if (w * h > nparams) | |||
237 | return FALSE0; | |||
238 | ||||
239 | *width = w; | |||
240 | *height = h; | |||
241 | return TRUE1; | |||
242 | } | |||
243 | ||||
244 | Bool | |||
245 | PictureSetDefaultFilters(ScreenPtr pScreen) | |||
246 | { | |||
247 | if (!filterNames) | |||
248 | if (!PictureSetDefaultIds()) | |||
249 | return FALSE0; | |||
250 | if (PictureAddFilter(pScreen, FilterNearest"nearest", 0, 1, 1) < 0) | |||
251 | return FALSE0; | |||
252 | if (PictureAddFilter(pScreen, FilterBilinear"bilinear", 0, 2, 2) < 0) | |||
253 | return FALSE0; | |||
254 | ||||
255 | if (!PictureSetFilterAlias(pScreen, FilterNearest"nearest", FilterFast"fast")) | |||
256 | return FALSE0; | |||
257 | if (!PictureSetFilterAlias(pScreen, FilterBilinear"bilinear", FilterGood"good")) | |||
258 | return FALSE0; | |||
259 | if (!PictureSetFilterAlias(pScreen, FilterBilinear"bilinear", FilterBest"best")) | |||
260 | return FALSE0; | |||
261 | ||||
262 | if (PictureAddFilter | |||
263 | (pScreen, FilterConvolution"convolution", convolutionFilterValidateParams, 0, 0) < 0) | |||
264 | return FALSE0; | |||
265 | ||||
266 | return TRUE1; | |||
267 | } | |||
268 | ||||
269 | void | |||
270 | PictureResetFilters(ScreenPtr pScreen) | |||
271 | { | |||
272 | PictureScreenPtr ps = GetPictureScreen(pScreen)((PictureScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates , (&PictureScreenPrivateKeyRec))); | |||
273 | ||||
274 | free(ps->filters); | |||
275 | free(ps->filterAliases); | |||
276 | ||||
277 | /* Free the filters when the last screen is closed */ | |||
278 | if (pScreen->myNum == 0) | |||
279 | PictureFreeFilterIds(); | |||
280 | } | |||
281 | ||||
282 | int | |||
283 | SetPictureFilter(PicturePtr pPicture, char *name, int len, xFixed * params, | |||
284 | int nparams) | |||
285 | { | |||
286 | PictFilterPtr pFilter; | |||
287 | ScreenPtr pScreen; | |||
288 | ||||
289 | if (pPicture->pDrawable != NULL((void*)0)) | |||
| ||||
290 | pScreen = pPicture->pDrawable->pScreen; | |||
291 | else | |||
292 | pScreen = screenInfo.screens[0]; | |||
293 | ||||
294 | pFilter = PictureFindFilter(pScreen, name, len); | |||
295 | ||||
296 | if (!pFilter) | |||
297 | return BadName15; | |||
298 | ||||
299 | if (pPicture->pDrawable == NULL((void*)0)) { | |||
300 | int s; | |||
301 | ||||
302 | /* For source pictures, the picture isn't tied to a screen. So, ensure | |||
303 | * that all screens can handle a filter we set for the picture. | |||
304 | */ | |||
305 | for (s = 1; s < screenInfo.numScreens; s++) { | |||
306 | PictFilterPtr pScreenFilter; | |||
307 | ||||
308 | pScreenFilter = PictureFindFilter(screenInfo.screens[s], name, len); | |||
309 | if (!pScreenFilter || pScreenFilter->id != pFilter->id) | |||
310 | return BadMatch8; | |||
311 | } | |||
312 | } | |||
313 | return SetPicturePictFilter(pPicture, pFilter, params, nparams); | |||
314 | } | |||
315 | ||||
316 | int | |||
317 | SetPicturePictFilter(PicturePtr pPicture, PictFilterPtr pFilter, | |||
318 | xFixed * params, int nparams) | |||
319 | { | |||
320 | ScreenPtr pScreen; | |||
321 | int i; | |||
322 | ||||
323 | if (pPicture->pDrawable) | |||
324 | pScreen = pPicture->pDrawable->pScreen; | |||
325 | else | |||
326 | pScreen = screenInfo.screens[0]; | |||
327 | ||||
328 | if (pFilter->ValidateParams) { | |||
329 | int width, height; | |||
330 | ||||
331 | if (!(*pFilter->ValidateParams) | |||
332 | (pScreen, pFilter->id, params, nparams, &width, &height)) | |||
333 | return BadMatch8; | |||
334 | } | |||
335 | else if (nparams) | |||
336 | return BadMatch8; | |||
337 | ||||
338 | if (nparams != pPicture->filter_nparams) { | |||
339 | xFixed *new_params = malloc(nparams * sizeof(xFixed)); | |||
| ||||
340 | ||||
341 | if (!new_params && nparams) | |||
342 | return BadAlloc11; | |||
343 | free(pPicture->filter_params); | |||
344 | pPicture->filter_params = new_params; | |||
345 | pPicture->filter_nparams = nparams; | |||
346 | } | |||
347 | for (i = 0; i < nparams; i++) | |||
348 | pPicture->filter_params[i] = params[i]; | |||
349 | pPicture->filter = pFilter->id; | |||
350 | ||||
351 | if (pPicture->pDrawable) { | |||
352 | PictureScreenPtr ps = GetPictureScreen(pScreen)((PictureScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates , (&PictureScreenPrivateKeyRec))); | |||
353 | int result; | |||
354 | ||||
355 | result = (*ps->ChangePictureFilter) (pPicture, pPicture->filter, | |||
356 | params, nparams); | |||
357 | return result; | |||
358 | } | |||
359 | return Success0; | |||
360 | } |