diff options
Diffstat (limited to '')
-rw-r--r-- | libraries/evas/src/modules/loaders/gif/evas_image_load_gif.c | 1030 |
1 files changed, 1030 insertions, 0 deletions
diff --git a/libraries/evas/src/modules/loaders/gif/evas_image_load_gif.c b/libraries/evas/src/modules/loaders/gif/evas_image_load_gif.c new file mode 100644 index 0000000..976df0d --- /dev/null +++ b/libraries/evas/src/modules/loaders/gif/evas_image_load_gif.c | |||
@@ -0,0 +1,1030 @@ | |||
1 | #include "evas_common.h" | ||
2 | #include "evas_private.h" | ||
3 | |||
4 | #include <sys/types.h> | ||
5 | #include <sys/stat.h> | ||
6 | #include <fcntl.h> | ||
7 | #include <unistd.h> | ||
8 | |||
9 | #include <gif_lib.h> | ||
10 | |||
11 | typedef struct _Gif_Frame Gif_Frame; | ||
12 | |||
13 | typedef enum _Frame_Load_Type | ||
14 | { | ||
15 | LOAD_FRAME_NONE = 0, | ||
16 | LOAD_FRAME_INFO = 1, | ||
17 | LOAD_FRAME_DATA = 2, | ||
18 | LOAD_FRAME_DATA_INFO = 3 | ||
19 | } Frame_Load_Type; | ||
20 | |||
21 | struct _Gif_Frame | ||
22 | { | ||
23 | struct { | ||
24 | /* Image descriptor */ | ||
25 | int x; | ||
26 | int y; | ||
27 | int w; | ||
28 | int h; | ||
29 | int interlace; | ||
30 | } image_des; | ||
31 | |||
32 | struct { | ||
33 | /* Graphic Control*/ | ||
34 | int disposal; | ||
35 | int transparent; | ||
36 | int delay; | ||
37 | int input; | ||
38 | } frame_info; | ||
39 | }; | ||
40 | |||
41 | static Eina_Bool evas_image_load_file_data_gif_internal(Image_Entry *ie, Image_Entry_Frame *frame, int *error); | ||
42 | |||
43 | static Eina_Bool evas_image_load_file_head_gif(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4); | ||
44 | static Eina_Bool evas_image_load_file_data_gif(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4); | ||
45 | static double evas_image_load_frame_duration_gif(Image_Entry *ie, const char *file, int start_frame, int frame_num) ; | ||
46 | static Eina_Bool evas_image_load_specific_frame(Image_Entry *ie, const char *file, int frame_index, int *error); | ||
47 | |||
48 | static Evas_Image_Load_Func evas_image_load_gif_func = | ||
49 | { | ||
50 | EINA_TRUE, | ||
51 | evas_image_load_file_head_gif, | ||
52 | evas_image_load_file_data_gif, | ||
53 | evas_image_load_frame_duration_gif | ||
54 | }; | ||
55 | #define byte2_to_int(a,b) (((b)<<8)|(a)) | ||
56 | |||
57 | #define FRAME_MAX 1024 | ||
58 | |||
59 | /* find specific frame in image entry */ | ||
60 | static Eina_Bool | ||
61 | _find_frame(Image_Entry *ie, int frame_index, Image_Entry_Frame **frame) | ||
62 | { | ||
63 | Eina_List *l; | ||
64 | Image_Entry_Frame *hit_frame = NULL; | ||
65 | |||
66 | if (!ie) return EINA_FALSE; | ||
67 | if (!ie->frames) return EINA_FALSE; | ||
68 | |||
69 | EINA_LIST_FOREACH(ie->frames, l, hit_frame) | ||
70 | { | ||
71 | if (hit_frame->index == frame_index) | ||
72 | { | ||
73 | *frame = hit_frame; | ||
74 | return EINA_TRUE; | ||
75 | } | ||
76 | } | ||
77 | return EINA_FALSE; | ||
78 | } | ||
79 | |||
80 | static Eina_Bool | ||
81 | _find_close_frame(Image_Entry *ie, int frame_index, Image_Entry_Frame **frame) | ||
82 | { | ||
83 | int i; | ||
84 | Eina_Bool hit = EINA_FALSE; | ||
85 | i = frame_index -1; | ||
86 | |||
87 | if (!ie) return EINA_FALSE; | ||
88 | if (!ie->frames) return EINA_FALSE; | ||
89 | |||
90 | for (; i > 0; i--) | ||
91 | { | ||
92 | hit = _find_frame(ie, i, frame); | ||
93 | if (hit) | ||
94 | return EINA_TRUE; | ||
95 | } | ||
96 | return EINA_FALSE; | ||
97 | } | ||
98 | |||
99 | static Eina_Bool | ||
100 | _evas_image_skip_frame(GifFileType *gif, int frame) | ||
101 | { | ||
102 | int remain_frame = 0; | ||
103 | GifRecordType rec; | ||
104 | |||
105 | if (!gif) return EINA_FALSE; | ||
106 | if (frame == 0) return EINA_TRUE; /* no need to skip */ | ||
107 | if (frame < 0 || frame > FRAME_MAX) return EINA_FALSE; | ||
108 | |||
109 | remain_frame = frame; | ||
110 | |||
111 | do | ||
112 | { | ||
113 | if (DGifGetRecordType(gif, &rec) == GIF_ERROR) return EINA_FALSE; | ||
114 | |||
115 | if (rec == EXTENSION_RECORD_TYPE) | ||
116 | { | ||
117 | int ext_code; | ||
118 | GifByteType *ext; | ||
119 | |||
120 | ext = NULL; | ||
121 | DGifGetExtension(gif, &ext_code, &ext); | ||
122 | while (ext) | ||
123 | { /*skip extention */ | ||
124 | ext = NULL; | ||
125 | DGifGetExtensionNext(gif, &ext); | ||
126 | } | ||
127 | } | ||
128 | |||
129 | if (rec == IMAGE_DESC_RECORD_TYPE) | ||
130 | { | ||
131 | int img_code; | ||
132 | GifByteType *img; | ||
133 | |||
134 | if (DGifGetImageDesc(gif) == GIF_ERROR) return EINA_FALSE; | ||
135 | |||
136 | remain_frame --; | ||
137 | /* we have to count frame, so use DGifGetCode and skip decoding */ | ||
138 | if (DGifGetCode(gif, &img_code, &img) == GIF_ERROR) return EINA_FALSE; | ||
139 | |||
140 | while (img) | ||
141 | { | ||
142 | img = NULL; | ||
143 | DGifGetCodeNext(gif, &img); | ||
144 | } | ||
145 | if (remain_frame < 1) return EINA_TRUE; | ||
146 | } | ||
147 | if (rec == TERMINATE_RECORD_TYPE) return EINA_FALSE; /* end of file */ | ||
148 | |||
149 | } while ((rec != TERMINATE_RECORD_TYPE) && (remain_frame > 0)); | ||
150 | return EINA_FALSE; | ||
151 | } | ||
152 | |||
153 | static Eina_Bool | ||
154 | _evas_image_load_frame_graphic_info(Image_Entry_Frame *frame, GifByteType *ext) | ||
155 | { | ||
156 | Gif_Frame *gif_frame = NULL; | ||
157 | if ((!frame) || (!ext)) return EINA_FALSE; | ||
158 | |||
159 | gif_frame = (Gif_Frame *) frame->info; | ||
160 | |||
161 | /* transparent */ | ||
162 | if ((ext[1] & 0x1) != 0) | ||
163 | gif_frame->frame_info.transparent = ext[4]; | ||
164 | else | ||
165 | gif_frame->frame_info.transparent = -1; | ||
166 | |||
167 | gif_frame->frame_info.input = (ext[1] >>1) & 0x1; | ||
168 | gif_frame->frame_info.disposal = (ext[1] >>2) & 0x7; | ||
169 | gif_frame->frame_info.delay = byte2_to_int(ext[2], ext[3]); | ||
170 | return EINA_TRUE; | ||
171 | } | ||
172 | |||
173 | static Eina_Bool | ||
174 | _evas_image_load_frame_image_des_info(GifFileType *gif, Image_Entry_Frame *frame) | ||
175 | { | ||
176 | Gif_Frame *gif_frame = NULL; | ||
177 | if ((!gif) || (!frame)) return EINA_FALSE; | ||
178 | |||
179 | gif_frame = (Gif_Frame *) frame->info; | ||
180 | gif_frame->image_des.x = gif->Image.Left; | ||
181 | gif_frame->image_des.y = gif->Image.Top; | ||
182 | gif_frame->image_des.w = gif->Image.Width; | ||
183 | gif_frame->image_des.h = gif->Image.Height; | ||
184 | gif_frame->image_des.interlace = gif->Image.Interlace; | ||
185 | return EINA_TRUE; | ||
186 | } | ||
187 | |||
188 | static Eina_Bool | ||
189 | _evas_image_load_frame_image_data(Image_Entry *ie, GifFileType *gif, Image_Entry_Frame *frame, int *error) | ||
190 | { | ||
191 | int w; | ||
192 | int h; | ||
193 | int x; | ||
194 | int y; | ||
195 | int i,j; | ||
196 | int bg; | ||
197 | int r; | ||
198 | int g; | ||
199 | int b; | ||
200 | int alpha; | ||
201 | double per; | ||
202 | double per_inc; | ||
203 | ColorMapObject *cmap; | ||
204 | GifRowType *rows; | ||
205 | int intoffset[] = { 0, 4, 2, 1 }; | ||
206 | int intjump[] = { 8, 8, 4, 2 }; | ||
207 | size_t siz; | ||
208 | int cache_w; | ||
209 | int cache_h; | ||
210 | int cur_h; | ||
211 | int cur_w; | ||
212 | int disposal = 0; | ||
213 | int bg_val = 0; | ||
214 | DATA32 *ptr; | ||
215 | Gif_Frame *gif_frame = NULL; | ||
216 | |||
217 | if ((!gif) || (!frame)) return EINA_FALSE; | ||
218 | |||
219 | gif_frame = (Gif_Frame *) frame->info; | ||
220 | w = gif->Image.Width; | ||
221 | h = gif->Image.Height; | ||
222 | x = gif->Image.Left; | ||
223 | y = gif->Image.Top; | ||
224 | cache_w = ie->w; | ||
225 | cache_h = ie->h; | ||
226 | |||
227 | rows = malloc(h * sizeof(GifRowType *)); | ||
228 | if (!rows) | ||
229 | { | ||
230 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
231 | return EINA_FALSE; | ||
232 | } | ||
233 | for (i = 0; i < h; i++) | ||
234 | { | ||
235 | rows[i] = NULL; | ||
236 | } | ||
237 | for (i = 0; i < h; i++) | ||
238 | { | ||
239 | rows[i] = malloc(w * sizeof(GifPixelType)); | ||
240 | if (!rows[i]) | ||
241 | { | ||
242 | for (i = 0; i < h; i++) | ||
243 | { | ||
244 | if (rows[i]) | ||
245 | { | ||
246 | free(rows[i]); | ||
247 | } | ||
248 | } | ||
249 | free(rows); | ||
250 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
251 | return EINA_FALSE; | ||
252 | } | ||
253 | } | ||
254 | if (gif->Image.Interlace) | ||
255 | { | ||
256 | for (i = 0; i < 4; i++) | ||
257 | { | ||
258 | for (j = intoffset[i]; j < h; j += intjump[i]) | ||
259 | { | ||
260 | DGifGetLine(gif, rows[j], w); | ||
261 | } | ||
262 | } | ||
263 | } | ||
264 | else | ||
265 | { | ||
266 | for (i = 0; i < h; i++) | ||
267 | { | ||
268 | if (DGifGetLine(gif, rows[i], w) != GIF_OK) | ||
269 | { | ||
270 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
271 | goto error; | ||
272 | } | ||
273 | } | ||
274 | } | ||
275 | alpha = gif_frame->frame_info.transparent; | ||
276 | siz = cache_w *cache_h * sizeof(DATA32); | ||
277 | frame->data = malloc(siz); | ||
278 | if (!frame->data) | ||
279 | { | ||
280 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
281 | goto error; | ||
282 | } | ||
283 | ptr = frame->data; | ||
284 | bg = gif->SBackGroundColor; | ||
285 | cmap = (gif->Image.ColorMap ? gif->Image.ColorMap : gif->SColorMap); | ||
286 | |||
287 | if (!cmap) | ||
288 | { | ||
289 | DGifCloseFile(gif); | ||
290 | for (i = 0; i < h; i++) | ||
291 | { | ||
292 | free(rows[i]); | ||
293 | } | ||
294 | free(rows); | ||
295 | if (frame->data) free(frame->data); | ||
296 | *error = EVAS_LOAD_ERROR_CORRUPT_FILE; | ||
297 | return EINA_FALSE; | ||
298 | } | ||
299 | |||
300 | /* get the background value */ | ||
301 | r = cmap->Colors[bg].Red; | ||
302 | g = cmap->Colors[bg].Green; | ||
303 | b = cmap->Colors[bg].Blue; | ||
304 | bg_val = ARGB_JOIN(0xff, r, g, b); | ||
305 | |||
306 | per_inc = 100.0 / (((double)w) * h); | ||
307 | cur_h = h; | ||
308 | cur_w = w; | ||
309 | if (cur_h > cache_h) cur_h = cache_h; | ||
310 | if (cur_w > cache_w) cur_w = cache_w; | ||
311 | |||
312 | if (frame->index > 1) | ||
313 | { | ||
314 | /* get previous frame only frame index is bigger than 1 */ | ||
315 | DATA32 *ptr_src; | ||
316 | Image_Entry_Frame *new_frame = NULL; | ||
317 | int cur_frame = frame->index; | ||
318 | int start_frame = 1; | ||
319 | int j = 0; | ||
320 | |||
321 | if (_find_close_frame(ie, cur_frame, &new_frame)) | ||
322 | start_frame = new_frame->index + 1; | ||
323 | |||
324 | if ((start_frame < 1) || (start_frame > cur_frame)) | ||
325 | { | ||
326 | *error = EVAS_LOAD_ERROR_CORRUPT_FILE; | ||
327 | goto error; | ||
328 | } | ||
329 | /* load previous frame of cur_frame */ | ||
330 | for (j = start_frame; j < cur_frame ; j++) | ||
331 | { | ||
332 | if (!evas_image_load_specific_frame(ie, ie->file, j, error)) | ||
333 | { | ||
334 | *error = EVAS_LOAD_ERROR_CORRUPT_FILE; | ||
335 | goto error; | ||
336 | } | ||
337 | } | ||
338 | if (!_find_frame(ie, cur_frame - 1, &new_frame)) | ||
339 | { | ||
340 | *error = EVAS_LOAD_ERROR_CORRUPT_FILE; | ||
341 | goto error; | ||
342 | } | ||
343 | else | ||
344 | { | ||
345 | Gif_Frame *gif_frame = NULL; | ||
346 | ptr_src = new_frame->data; | ||
347 | if (new_frame->info) | ||
348 | { | ||
349 | gif_frame = (Gif_Frame *)(new_frame->info); | ||
350 | disposal = gif_frame->frame_info.disposal; | ||
351 | } | ||
352 | switch(disposal) /* we only support disposal flag 0,1,2 */ | ||
353 | { | ||
354 | case 1: /* Do not dispose. need previous frame*/ | ||
355 | memcpy(ptr, ptr_src, siz); | ||
356 | /* composite frames */ | ||
357 | ptr = ptr + cache_w * y; | ||
358 | |||
359 | for (i = 0; i < cur_h; i++) | ||
360 | { | ||
361 | ptr = ptr + x; | ||
362 | for (j = 0; j < cur_w; j++) | ||
363 | { | ||
364 | if (rows[i][j] == alpha) | ||
365 | { | ||
366 | ptr++ ; | ||
367 | } | ||
368 | else | ||
369 | { | ||
370 | r = cmap->Colors[rows[i][j]].Red; | ||
371 | g = cmap->Colors[rows[i][j]].Green; | ||
372 | b = cmap->Colors[rows[i][j]].Blue; | ||
373 | *ptr++ = ARGB_JOIN(0xff, r, g, b); | ||
374 | } | ||
375 | per += per_inc; | ||
376 | } | ||
377 | ptr = ptr + (cache_w - (x + cur_w)); | ||
378 | } | ||
379 | break; | ||
380 | case 2: /* Restore to background color */ | ||
381 | memcpy(ptr, ptr_src, siz); | ||
382 | /* composite frames */ | ||
383 | for (i = 0; i < cache_h; i++) | ||
384 | { | ||
385 | if ((i < y) || (i >= (y + cur_h))) | ||
386 | { | ||
387 | for (j = 0; j < cache_w; j++) | ||
388 | { | ||
389 | *ptr = bg_val; | ||
390 | ptr++; | ||
391 | } | ||
392 | } | ||
393 | else | ||
394 | { | ||
395 | int i1, j1; | ||
396 | i1 = i -y; | ||
397 | |||
398 | for (j = 0; j < cache_w; j++) | ||
399 | { | ||
400 | j1 = j - x; | ||
401 | if ((j < x) || (j >= (x + cur_w))) | ||
402 | { | ||
403 | *ptr = bg_val; | ||
404 | ptr++; | ||
405 | } | ||
406 | else | ||
407 | { | ||
408 | r = cmap->Colors[rows[i1][j1]].Red; | ||
409 | g = cmap->Colors[rows[i1][j1]].Green; | ||
410 | b = cmap->Colors[rows[i1][j1]].Blue; | ||
411 | *ptr++ = ARGB_JOIN(0xff, r, g, b); | ||
412 | } | ||
413 | } | ||
414 | } | ||
415 | } | ||
416 | break; | ||
417 | case 0: /* No disposal specified */ | ||
418 | default: | ||
419 | memset(ptr, 0, siz); | ||
420 | for (i = 0; i < cache_h; i++) | ||
421 | { | ||
422 | if ((i < y) || (i >= (y + cur_h))) | ||
423 | { | ||
424 | for (j = 0; j < cache_w; j++) | ||
425 | { | ||
426 | *ptr = bg_val; | ||
427 | ptr++; | ||
428 | } | ||
429 | } | ||
430 | else | ||
431 | { | ||
432 | int i1, j1; | ||
433 | i1 = i -y; | ||
434 | |||
435 | for (j = 0; j < cache_w; j++) | ||
436 | { | ||
437 | j1 = j - x; | ||
438 | if ((j < x) || (j >= (x + cur_w))) | ||
439 | { | ||
440 | *ptr = bg_val; | ||
441 | ptr++; | ||
442 | } | ||
443 | else | ||
444 | { | ||
445 | r = cmap->Colors[rows[i1][j1]].Red; | ||
446 | g = cmap->Colors[rows[i1][j1]].Green; | ||
447 | b = cmap->Colors[rows[i1][j1]].Blue; | ||
448 | *ptr++ = ARGB_JOIN(0xff, r, g, b); | ||
449 | } | ||
450 | } | ||
451 | } | ||
452 | } | ||
453 | break; | ||
454 | } | ||
455 | } | ||
456 | } | ||
457 | else /* first frame decoding */ | ||
458 | { | ||
459 | /* fill background color */ | ||
460 | for (i = 0; i < cache_h; i++) | ||
461 | { | ||
462 | if ((i < y) || (i >= (y + cur_h))) | ||
463 | { | ||
464 | for (j = 0; j < cache_w; j++) | ||
465 | { | ||
466 | *ptr = bg_val; | ||
467 | ptr++; | ||
468 | } | ||
469 | } | ||
470 | else | ||
471 | { | ||
472 | int i1, j1; | ||
473 | i1 = i -y; | ||
474 | |||
475 | for (j = 0; j < cache_w; j++) | ||
476 | { | ||
477 | j1 = j - x; | ||
478 | if ((j < x) || (j >= (x + cur_w))) | ||
479 | { | ||
480 | *ptr = bg_val; | ||
481 | ptr++; | ||
482 | } | ||
483 | else | ||
484 | { | ||
485 | r = cmap->Colors[rows[i1][j1]].Red; | ||
486 | g = cmap->Colors[rows[i1][j1]].Green; | ||
487 | b = cmap->Colors[rows[i1][j1]].Blue; | ||
488 | *ptr++ = ARGB_JOIN(0xff, r, g, b); | ||
489 | } | ||
490 | } | ||
491 | } | ||
492 | } | ||
493 | } | ||
494 | |||
495 | for (i = 0; i < h; i++) | ||
496 | { | ||
497 | if (rows[i]) free(rows[i]); | ||
498 | } | ||
499 | if (rows) free(rows); | ||
500 | frame->loaded = EINA_TRUE; | ||
501 | return EINA_TRUE; | ||
502 | error: | ||
503 | for (i = 0; i < h; i++) | ||
504 | { | ||
505 | if (rows[i]) free(rows[i]); | ||
506 | } | ||
507 | if (rows) free(rows); | ||
508 | return EINA_FALSE; | ||
509 | } | ||
510 | |||
511 | static Eina_Bool | ||
512 | _evas_image_load_frame(Image_Entry *ie, GifFileType *gif, Image_Entry_Frame *frame, Frame_Load_Type type, int *error) | ||
513 | { | ||
514 | GifRecordType rec; | ||
515 | int gra_res = 0, img_res = 0; | ||
516 | Eina_Bool res = EINA_FALSE; | ||
517 | Gif_Frame *gif_frame = NULL; | ||
518 | |||
519 | if ((!gif) || (!frame)) return EINA_FALSE; | ||
520 | gif_frame = (Gif_Frame *) frame->info; | ||
521 | |||
522 | if (type > LOAD_FRAME_DATA_INFO) return EINA_FALSE; | ||
523 | |||
524 | do | ||
525 | { | ||
526 | if (DGifGetRecordType(gif, &rec) == GIF_ERROR) return EINA_FALSE; | ||
527 | if (rec == IMAGE_DESC_RECORD_TYPE) | ||
528 | { | ||
529 | img_res++; | ||
530 | break; | ||
531 | } | ||
532 | else if (rec == EXTENSION_RECORD_TYPE) | ||
533 | { | ||
534 | int ext_code; | ||
535 | GifByteType *ext; | ||
536 | |||
537 | ext = NULL; | ||
538 | DGifGetExtension(gif, &ext_code, &ext); | ||
539 | while (ext) | ||
540 | { | ||
541 | if (ext_code == 0xf9) /* Graphic Control Extension */ | ||
542 | { | ||
543 | gra_res++; | ||
544 | /* fill frame info */ | ||
545 | if ((type == LOAD_FRAME_INFO) || (type == LOAD_FRAME_DATA_INFO)) | ||
546 | _evas_image_load_frame_graphic_info(frame,ext); | ||
547 | } | ||
548 | ext = NULL; | ||
549 | DGifGetExtensionNext(gif, &ext); | ||
550 | } | ||
551 | } | ||
552 | } while ((rec != TERMINATE_RECORD_TYPE) && (img_res == 0)); | ||
553 | if (img_res != 1) return EINA_FALSE; | ||
554 | if (DGifGetImageDesc(gif) == GIF_ERROR) return EINA_FALSE; | ||
555 | if ((type == LOAD_FRAME_INFO) || (type == LOAD_FRAME_DATA_INFO)) | ||
556 | _evas_image_load_frame_image_des_info(gif, frame); | ||
557 | |||
558 | if ((type == LOAD_FRAME_DATA) || (type == LOAD_FRAME_DATA_INFO)) | ||
559 | { | ||
560 | res = _evas_image_load_frame_image_data(ie, gif,frame, error); | ||
561 | if (!res) return EINA_FALSE; | ||
562 | } | ||
563 | return EINA_TRUE; | ||
564 | } | ||
565 | |||
566 | |||
567 | /* set frame data to cache entry's data */ | ||
568 | static Eina_Bool | ||
569 | evas_image_load_file_data_gif_internal(Image_Entry *ie, Image_Entry_Frame *frame, int *error) | ||
570 | { | ||
571 | int w; | ||
572 | int h; | ||
573 | int dst_x; | ||
574 | int dst_y; | ||
575 | DATA32 *dst; | ||
576 | DATA32 *src; | ||
577 | int cache_w, cache_h; | ||
578 | size_t siz; | ||
579 | Gif_Frame *gif_frame = NULL; | ||
580 | |||
581 | gif_frame = (Gif_Frame *) frame->info; | ||
582 | cache_w = ie->w; | ||
583 | cache_h = ie->h; | ||
584 | w = gif_frame->image_des.w; | ||
585 | h = gif_frame->image_des.h; | ||
586 | dst_x = gif_frame->image_des.x; | ||
587 | dst_y = gif_frame->image_des.y; | ||
588 | |||
589 | src = frame->data; | ||
590 | |||
591 | if (!evas_cache_image_pixels(ie)) | ||
592 | { | ||
593 | evas_cache_image_surface_alloc(ie, cache_w, cache_h); | ||
594 | } | ||
595 | |||
596 | if (!evas_cache_image_pixels(ie)) | ||
597 | { | ||
598 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
599 | return EINA_FALSE; | ||
600 | } | ||
601 | |||
602 | /* only copy real frame part */ | ||
603 | siz = cache_w * cache_h * sizeof(DATA32); | ||
604 | dst = evas_cache_image_pixels(ie); | ||
605 | |||
606 | memcpy(dst, src, siz); | ||
607 | |||
608 | evas_common_image_premul(ie); | ||
609 | |||
610 | *error = EVAS_LOAD_ERROR_NONE; | ||
611 | return EINA_TRUE; | ||
612 | } | ||
613 | |||
614 | static Eina_Bool | ||
615 | evas_image_load_file_head_gif(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error) | ||
616 | { | ||
617 | int fd; | ||
618 | GifFileType *gif; | ||
619 | GifRecordType rec; | ||
620 | int w; | ||
621 | int h; | ||
622 | int alpha; | ||
623 | int loop_count = -1; | ||
624 | |||
625 | w = 0; | ||
626 | h = 0; | ||
627 | alpha = -1; | ||
628 | |||
629 | #ifndef __EMX__ | ||
630 | fd = open(file, O_RDONLY); | ||
631 | #else | ||
632 | fd = open(file, O_RDONLY | O_BINARY); | ||
633 | #endif | ||
634 | if (fd < 0) | ||
635 | { | ||
636 | *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST; | ||
637 | return EINA_FALSE; | ||
638 | } | ||
639 | |||
640 | gif = DGifOpenFileHandle(fd); | ||
641 | if (!gif) | ||
642 | { | ||
643 | if (fd) close(fd); | ||
644 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
645 | return EINA_FALSE; | ||
646 | } | ||
647 | |||
648 | /* check logical screen size */ | ||
649 | w = gif->SWidth; | ||
650 | h = gif->SHeight; | ||
651 | |||
652 | if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) || | ||
653 | IMG_TOO_BIG(w, h)) | ||
654 | { | ||
655 | DGifCloseFile(gif); | ||
656 | if (IMG_TOO_BIG(w, h)) | ||
657 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
658 | else | ||
659 | *error = EVAS_LOAD_ERROR_GENERIC; | ||
660 | return EINA_FALSE; | ||
661 | } | ||
662 | ie->w = w; | ||
663 | ie->h = h; | ||
664 | |||
665 | do | ||
666 | { | ||
667 | if (DGifGetRecordType(gif, &rec) == GIF_ERROR) | ||
668 | { | ||
669 | /* PrintGifError(); */ | ||
670 | DGifCloseFile(gif); | ||
671 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
672 | return EINA_FALSE; | ||
673 | } | ||
674 | |||
675 | /* image descript info */ | ||
676 | if (rec == IMAGE_DESC_RECORD_TYPE) | ||
677 | { | ||
678 | int img_code; | ||
679 | GifByteType *img; | ||
680 | |||
681 | if (DGifGetImageDesc(gif) == GIF_ERROR) | ||
682 | { | ||
683 | /* PrintGifError(); */ | ||
684 | DGifCloseFile(gif); | ||
685 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
686 | return EINA_FALSE; | ||
687 | } | ||
688 | /* we have to count frame, so use DGifGetCode and skip decoding */ | ||
689 | if (DGifGetCode(gif, &img_code, &img) == GIF_ERROR) | ||
690 | { | ||
691 | /* PrintGifError(); */ | ||
692 | DGifCloseFile(gif); | ||
693 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
694 | return EINA_FALSE; | ||
695 | } | ||
696 | while (img) | ||
697 | { | ||
698 | img = NULL; | ||
699 | DGifGetCodeNext(gif, &img); | ||
700 | } | ||
701 | } | ||
702 | else if (rec == EXTENSION_RECORD_TYPE) | ||
703 | { | ||
704 | int ext_code; | ||
705 | GifByteType *ext; | ||
706 | |||
707 | ext = NULL; | ||
708 | DGifGetExtension(gif, &ext_code, &ext); | ||
709 | while (ext) | ||
710 | { | ||
711 | if (ext_code == 0xf9) /* Graphic Control Extension */ | ||
712 | { | ||
713 | if ((ext[1] & 1) && (alpha < 0)) alpha = (int)ext[4]; | ||
714 | } | ||
715 | else if (ext_code == 0xff) /* application extension */ | ||
716 | { | ||
717 | if (!strncmp ((char*)(&ext[1]), "NETSCAPE2.0", 11) || | ||
718 | !strncmp ((char*)(&ext[1]), "ANIMEXTS1.0", 11)) | ||
719 | { | ||
720 | ext=NULL; | ||
721 | DGifGetExtensionNext(gif, &ext); | ||
722 | |||
723 | if (ext[1] == 0x01) | ||
724 | { | ||
725 | loop_count = ext[2] + (ext[3] << 8); | ||
726 | if (loop_count > 0) loop_count++; | ||
727 | } | ||
728 | } | ||
729 | } | ||
730 | |||
731 | ext = NULL; | ||
732 | DGifGetExtensionNext(gif, &ext); | ||
733 | } | ||
734 | } | ||
735 | } while (rec != TERMINATE_RECORD_TYPE); | ||
736 | |||
737 | if (alpha >= 0) ie->flags.alpha = 1; | ||
738 | |||
739 | if (gif->ImageCount > 1) | ||
740 | { | ||
741 | ie->flags.animated = 1; | ||
742 | ie->loop_count = loop_count; | ||
743 | ie->loop_hint = EVAS_IMAGE_ANIMATED_HINT_LOOP; | ||
744 | ie->frame_count = gif->ImageCount; | ||
745 | ie->frames = NULL; | ||
746 | } | ||
747 | |||
748 | DGifCloseFile(gif); | ||
749 | *error = EVAS_LOAD_ERROR_NONE; | ||
750 | return EINA_TRUE; | ||
751 | } | ||
752 | |||
753 | static Eina_Bool | ||
754 | evas_image_load_specific_frame(Image_Entry *ie, const char *file, int frame_index, int *error) | ||
755 | { | ||
756 | int fd; | ||
757 | GifFileType *gif; | ||
758 | Image_Entry_Frame *frame = NULL; | ||
759 | Gif_Frame *gif_frame = NULL; | ||
760 | |||
761 | #ifndef __EMX__ | ||
762 | fd = open(file, O_RDONLY); | ||
763 | #else | ||
764 | fd = open(file, O_RDONLY | O_BINARY); | ||
765 | #endif | ||
766 | if (fd < 0) | ||
767 | { | ||
768 | *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST; | ||
769 | return EINA_FALSE; | ||
770 | } | ||
771 | |||
772 | gif = DGifOpenFileHandle(fd); | ||
773 | if (!gif) | ||
774 | { | ||
775 | if (fd) close(fd); | ||
776 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
777 | return EINA_FALSE; | ||
778 | } | ||
779 | if (!_evas_image_skip_frame(gif, frame_index-1)) | ||
780 | { | ||
781 | if (fd) close(fd); | ||
782 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
783 | return EINA_FALSE; | ||
784 | } | ||
785 | |||
786 | frame = malloc(sizeof (Image_Entry_Frame)); | ||
787 | if (!frame) | ||
788 | { | ||
789 | if (fd) close(fd); | ||
790 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
791 | return EINA_FALSE; | ||
792 | } | ||
793 | |||
794 | gif_frame = malloc(sizeof (Gif_Frame)); | ||
795 | if (!gif_frame) | ||
796 | { | ||
797 | if (fd) close(fd); | ||
798 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
799 | return EINA_FALSE; | ||
800 | } | ||
801 | frame->info = gif_frame; | ||
802 | frame->index = frame_index; | ||
803 | if (!_evas_image_load_frame(ie,gif, frame, LOAD_FRAME_DATA_INFO,error)) | ||
804 | { | ||
805 | if (fd) close(fd); | ||
806 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
807 | return EINA_FALSE; | ||
808 | } | ||
809 | |||
810 | ie->frames = eina_list_append(ie->frames, frame); | ||
811 | DGifCloseFile(gif); | ||
812 | return EINA_TRUE; | ||
813 | } | ||
814 | |||
815 | static Eina_Bool | ||
816 | evas_image_load_file_data_gif(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error) | ||
817 | { | ||
818 | int cur_frame_index; | ||
819 | Image_Entry_Frame *frame = NULL; | ||
820 | Eina_Bool hit; | ||
821 | |||
822 | if(!ie->flags.animated) | ||
823 | cur_frame_index = 1; | ||
824 | else | ||
825 | cur_frame_index = ie->cur_frame; | ||
826 | |||
827 | if ((ie->flags.animated) && | ||
828 | ((cur_frame_index <0) || (cur_frame_index > FRAME_MAX) || (cur_frame_index > ie->frame_count))) | ||
829 | { | ||
830 | *error = EVAS_LOAD_ERROR_GENERIC; | ||
831 | return EINA_FALSE; | ||
832 | } | ||
833 | |||
834 | /* first time frame is set to be 0. so default is 1 */ | ||
835 | if (cur_frame_index == 0) cur_frame_index++; | ||
836 | |||
837 | /* Check current frame exists in hash table */ | ||
838 | hit = _find_frame(ie, cur_frame_index, &frame); | ||
839 | |||
840 | /* if current frame exist in has table, check load flag */ | ||
841 | if (hit) | ||
842 | { | ||
843 | if (frame->loaded) | ||
844 | evas_image_load_file_data_gif_internal(ie,frame,error); | ||
845 | else | ||
846 | { | ||
847 | int fd; | ||
848 | GifFileType *gif; | ||
849 | |||
850 | #ifndef __EMX__ | ||
851 | fd = open(file, O_RDONLY); | ||
852 | #else | ||
853 | fd = open(file, O_RDONLY | O_BINARY); | ||
854 | #endif | ||
855 | if (fd < 0) | ||
856 | { | ||
857 | *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST; | ||
858 | return EINA_FALSE; | ||
859 | } | ||
860 | |||
861 | gif = DGifOpenFileHandle(fd); | ||
862 | if (!gif) | ||
863 | { | ||
864 | if (fd) close(fd); | ||
865 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
866 | return EINA_FALSE; | ||
867 | } | ||
868 | _evas_image_skip_frame(gif, cur_frame_index-1); | ||
869 | if (!_evas_image_load_frame(ie, gif, frame, LOAD_FRAME_DATA,error)) | ||
870 | { | ||
871 | if (fd) close(fd); | ||
872 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
873 | return EINA_FALSE; | ||
874 | } | ||
875 | if (!evas_image_load_file_data_gif_internal(ie, frame, error)) | ||
876 | { | ||
877 | if (fd) close(fd); | ||
878 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
879 | return EINA_FALSE; | ||
880 | } | ||
881 | DGifCloseFile(gif); | ||
882 | *error = EVAS_LOAD_ERROR_NONE; | ||
883 | return EINA_TRUE; | ||
884 | } | ||
885 | } | ||
886 | /* current frame does is not exist */ | ||
887 | else | ||
888 | { | ||
889 | if (!evas_image_load_specific_frame(ie, file, cur_frame_index, error)) | ||
890 | { | ||
891 | return EINA_FALSE; | ||
892 | } | ||
893 | hit = EINA_FALSE; | ||
894 | frame = NULL; | ||
895 | hit = _find_frame(ie, cur_frame_index, &frame); | ||
896 | if (!hit) return EINA_FALSE; | ||
897 | if (!evas_image_load_file_data_gif_internal(ie, frame, error)) | ||
898 | { | ||
899 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
900 | return EINA_FALSE; | ||
901 | } | ||
902 | return EINA_TRUE; | ||
903 | } | ||
904 | return EINA_FALSE; | ||
905 | } | ||
906 | |||
907 | static double | ||
908 | evas_image_load_frame_duration_gif(Image_Entry *ie, const char *file, const int start_frame, const int frame_num) | ||
909 | { | ||
910 | int fd; | ||
911 | GifFileType *gif; | ||
912 | GifRecordType rec; | ||
913 | int done; | ||
914 | int current_frame = 1; | ||
915 | int remain_frames = frame_num; | ||
916 | double duration = 0; | ||
917 | int frame_count = 0; | ||
918 | |||
919 | frame_count = ie->frame_count; | ||
920 | |||
921 | if (!ie->flags.animated) return -1; | ||
922 | if ((start_frame + frame_num) > frame_count) return -1; | ||
923 | if (frame_num < 0) return -1; | ||
924 | |||
925 | done = 0; | ||
926 | |||
927 | #ifndef __EMX__ | ||
928 | fd = open(file, O_RDONLY); | ||
929 | #else | ||
930 | fd = open(file, O_RDONLY | O_BINARY); | ||
931 | #endif | ||
932 | if (fd < 0) return -1; | ||
933 | |||
934 | gif = DGifOpenFileHandle(fd); | ||
935 | if (!gif) | ||
936 | { | ||
937 | if (fd) close(fd); | ||
938 | return -1; | ||
939 | } | ||
940 | |||
941 | do | ||
942 | { | ||
943 | if (DGifGetRecordType(gif, &rec) == GIF_ERROR) | ||
944 | { | ||
945 | rec = TERMINATE_RECORD_TYPE; | ||
946 | } | ||
947 | if (rec == IMAGE_DESC_RECORD_TYPE) | ||
948 | { | ||
949 | int img_code; | ||
950 | GifByteType *img; | ||
951 | |||
952 | if (DGifGetImageDesc(gif) == GIF_ERROR) | ||
953 | { | ||
954 | /* PrintGifError(); */ | ||
955 | rec = TERMINATE_RECORD_TYPE; | ||
956 | } | ||
957 | current_frame++; | ||
958 | /* we have to count frame, so use DGifGetCode and skip decoding */ | ||
959 | if (DGifGetCode(gif, &img_code, &img) == GIF_ERROR) | ||
960 | { | ||
961 | rec = TERMINATE_RECORD_TYPE; | ||
962 | } | ||
963 | while (img) | ||
964 | { | ||
965 | img = NULL; | ||
966 | DGifGetExtensionNext(gif, &img); | ||
967 | } | ||
968 | } | ||
969 | else if (rec == EXTENSION_RECORD_TYPE) | ||
970 | { | ||
971 | int ext_code; | ||
972 | GifByteType *ext; | ||
973 | |||
974 | ext = NULL; | ||
975 | DGifGetExtension(gif, &ext_code, &ext); | ||
976 | while (ext) | ||
977 | { | ||
978 | if (ext_code == 0xf9) /* Graphic Control Extension */ | ||
979 | { | ||
980 | if ((current_frame >= start_frame) && (current_frame <= frame_count)) | ||
981 | { | ||
982 | int frame_duration = 0; | ||
983 | if (remain_frames < 0) break; | ||
984 | frame_duration = byte2_to_int (ext[2], ext[3]); | ||
985 | if (frame_duration == 0) | ||
986 | duration += 0.1; | ||
987 | else | ||
988 | duration += (double)frame_duration/100; | ||
989 | remain_frames --; | ||
990 | } | ||
991 | } | ||
992 | ext = NULL; | ||
993 | DGifGetExtensionNext(gif, &ext); | ||
994 | } | ||
995 | } | ||
996 | } while (rec != TERMINATE_RECORD_TYPE); | ||
997 | |||
998 | DGifCloseFile(gif); | ||
999 | return duration; | ||
1000 | } | ||
1001 | |||
1002 | static int | ||
1003 | module_open(Evas_Module *em) | ||
1004 | { | ||
1005 | if (!em) return 0; | ||
1006 | em->functions = (void *)(&evas_image_load_gif_func); | ||
1007 | return 1; | ||
1008 | } | ||
1009 | |||
1010 | static void | ||
1011 | module_close(Evas_Module *em __UNUSED__) | ||
1012 | { | ||
1013 | } | ||
1014 | |||
1015 | static Evas_Module_Api evas_modapi = | ||
1016 | { | ||
1017 | EVAS_MODULE_API_VERSION, | ||
1018 | "gif", | ||
1019 | "none", | ||
1020 | { | ||
1021 | module_open, | ||
1022 | module_close | ||
1023 | } | ||
1024 | }; | ||
1025 | |||
1026 | EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_IMAGE_LOADER, image_loader, gif); | ||
1027 | |||
1028 | #ifndef EVAS_STATIC_BUILD_GIF | ||
1029 | EVAS_EINA_MODULE_DEFINE(image_loader, gif); | ||
1030 | #endif | ||