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Diffstat (limited to 'libraries/evas/src/modules/loaders/gif/evas_image_load_gif.c')
-rw-r--r--libraries/evas/src/modules/loaders/gif/evas_image_load_gif.c1038
1 files changed, 0 insertions, 1038 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
deleted file mode 100644
index dbb3584..0000000
--- a/libraries/evas/src/modules/loaders/gif/evas_image_load_gif.c
+++ /dev/null
@@ -1,1038 +0,0 @@
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
11typedef struct _Gif_Frame Gif_Frame;
12
13typedef 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
21struct _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
41static Eina_Bool evas_image_load_file_data_gif_internal(Image_Entry *ie, Image_Entry_Frame *frame, int *error);
42
43static 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);
44static 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);
45static double evas_image_load_frame_duration_gif(Image_Entry *ie, const char *file, int start_frame, int frame_num) ;
46static Eina_Bool evas_image_load_specific_frame(Image_Entry *ie, const char *file, int frame_index, int *error);
47
48static 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 EINA_FALSE
55};
56#define byte2_to_int(a,b) (((b)<<8)|(a))
57
58#define FRAME_MAX 1024
59
60/* find specific frame in image entry */
61static Eina_Bool
62_find_frame(Image_Entry *ie, int frame_index, Image_Entry_Frame **frame)
63{
64 Eina_List *l;
65 Image_Entry_Frame *hit_frame = NULL;
66
67 if (!ie) return EINA_FALSE;
68 if (!ie->frames) return EINA_FALSE;
69
70 EINA_LIST_FOREACH(ie->frames, l, hit_frame)
71 {
72 if (hit_frame->index == frame_index)
73 {
74 *frame = hit_frame;
75 return EINA_TRUE;
76 }
77 }
78 return EINA_FALSE;
79}
80
81static Eina_Bool
82_find_close_frame(Image_Entry *ie, int frame_index, Image_Entry_Frame **frame)
83{
84 int i;
85 Eina_Bool hit = EINA_FALSE;
86 i = frame_index -1;
87
88 if (!ie) return EINA_FALSE;
89 if (!ie->frames) return EINA_FALSE;
90
91 for (; i > 0; i--)
92 {
93 hit = _find_frame(ie, i, frame);
94 if (hit)
95 return EINA_TRUE;
96 }
97 return EINA_FALSE;
98}
99
100static Eina_Bool
101_evas_image_skip_frame(GifFileType *gif, int frame)
102{
103 int remain_frame = 0;
104 GifRecordType rec;
105
106 if (!gif) return EINA_FALSE;
107 if (frame == 0) return EINA_TRUE; /* no need to skip */
108 if (frame < 0 || frame > FRAME_MAX) return EINA_FALSE;
109
110 remain_frame = frame;
111
112 do
113 {
114 if (DGifGetRecordType(gif, &rec) == GIF_ERROR) return EINA_FALSE;
115
116 if (rec == EXTENSION_RECORD_TYPE)
117 {
118 int ext_code;
119 GifByteType *ext;
120
121 ext = NULL;
122 DGifGetExtension(gif, &ext_code, &ext);
123 while (ext)
124 { /*skip extention */
125 ext = NULL;
126 DGifGetExtensionNext(gif, &ext);
127 }
128 }
129
130 if (rec == IMAGE_DESC_RECORD_TYPE)
131 {
132 int img_code;
133 GifByteType *img;
134
135 if (DGifGetImageDesc(gif) == GIF_ERROR) return EINA_FALSE;
136
137 remain_frame --;
138 /* we have to count frame, so use DGifGetCode and skip decoding */
139 if (DGifGetCode(gif, &img_code, &img) == GIF_ERROR) return EINA_FALSE;
140
141 while (img)
142 {
143 img = NULL;
144 DGifGetCodeNext(gif, &img);
145 }
146 if (remain_frame < 1) return EINA_TRUE;
147 }
148 if (rec == TERMINATE_RECORD_TYPE) return EINA_FALSE; /* end of file */
149
150 } while ((rec != TERMINATE_RECORD_TYPE) && (remain_frame > 0));
151 return EINA_FALSE;
152}
153
154static Eina_Bool
155_evas_image_load_frame_graphic_info(Image_Entry_Frame *frame, GifByteType *ext)
156{
157 Gif_Frame *gif_frame = NULL;
158 if ((!frame) || (!ext)) return EINA_FALSE;
159
160 gif_frame = (Gif_Frame *) frame->info;
161
162 /* transparent */
163 if ((ext[1] & 0x1) != 0)
164 gif_frame->frame_info.transparent = ext[4];
165 else
166 gif_frame->frame_info.transparent = -1;
167
168 gif_frame->frame_info.input = (ext[1] >>1) & 0x1;
169 gif_frame->frame_info.disposal = (ext[1] >>2) & 0x7;
170 gif_frame->frame_info.delay = byte2_to_int(ext[2], ext[3]);
171 return EINA_TRUE;
172}
173
174static Eina_Bool
175_evas_image_load_frame_image_des_info(GifFileType *gif, Image_Entry_Frame *frame)
176{
177 Gif_Frame *gif_frame = NULL;
178 if ((!gif) || (!frame)) return EINA_FALSE;
179
180 gif_frame = (Gif_Frame *) frame->info;
181 gif_frame->image_des.x = gif->Image.Left;
182 gif_frame->image_des.y = gif->Image.Top;
183 gif_frame->image_des.w = gif->Image.Width;
184 gif_frame->image_des.h = gif->Image.Height;
185 gif_frame->image_des.interlace = gif->Image.Interlace;
186 return EINA_TRUE;
187}
188
189static Eina_Bool
190_evas_image_load_frame_image_data(Image_Entry *ie, GifFileType *gif, Image_Entry_Frame *frame, int *error)
191{
192 int w;
193 int h;
194 int x;
195 int y;
196 int i,j;
197 int bg;
198 int r;
199 int g;
200 int b;
201 int alpha;
202 double per;
203 double per_inc;
204 ColorMapObject *cmap;
205 GifRowType *rows;
206 int intoffset[] = { 0, 4, 2, 1 };
207 int intjump[] = { 8, 8, 4, 2 };
208 size_t siz;
209 int cache_w;
210 int cache_h;
211 int cur_h;
212 int cur_w;
213 int disposal = 0;
214 int bg_val = 0;
215 DATA32 *ptr;
216 Gif_Frame *gif_frame = NULL;
217
218 if ((!gif) || (!frame)) return EINA_FALSE;
219
220 gif_frame = (Gif_Frame *) frame->info;
221 w = gif->Image.Width;
222 h = gif->Image.Height;
223 x = gif->Image.Left;
224 y = gif->Image.Top;
225 cache_w = ie->w;
226 cache_h = ie->h;
227
228 rows = malloc(h * sizeof(GifRowType *));
229 if (!rows)
230 {
231 *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
232 return EINA_FALSE;
233 }
234 for (i = 0; i < h; i++)
235 {
236 rows[i] = NULL;
237 }
238 for (i = 0; i < h; i++)
239 {
240 rows[i] = malloc(w * sizeof(GifPixelType));
241 if (!rows[i])
242 {
243 for (i = 0; i < h; i++)
244 {
245 if (rows[i])
246 {
247 free(rows[i]);
248 }
249 }
250 free(rows);
251 *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
252 return EINA_FALSE;
253 }
254 }
255 if (gif->Image.Interlace)
256 {
257 for (i = 0; i < 4; i++)
258 {
259 for (j = intoffset[i]; j < h; j += intjump[i])
260 {
261 DGifGetLine(gif, rows[j], w);
262 }
263 }
264 }
265 else
266 {
267 for (i = 0; i < h; i++)
268 {
269 if (DGifGetLine(gif, rows[i], w) != GIF_OK)
270 {
271 *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
272 goto error;
273 }
274 }
275 }
276 alpha = gif_frame->frame_info.transparent;
277 siz = cache_w *cache_h * sizeof(DATA32);
278 frame->data = malloc(siz);
279 if (!frame->data)
280 {
281 *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
282 goto error;
283 }
284 ptr = frame->data;
285 bg = gif->SBackGroundColor;
286 cmap = (gif->Image.ColorMap ? gif->Image.ColorMap : gif->SColorMap);
287
288 if (!cmap)
289 {
290 DGifCloseFile(gif);
291 for (i = 0; i < h; i++)
292 {
293 free(rows[i]);
294 }
295 free(rows);
296 if (frame->data) free(frame->data);
297 *error = EVAS_LOAD_ERROR_CORRUPT_FILE;
298 return EINA_FALSE;
299 }
300
301 /* get the background value */
302 r = cmap->Colors[bg].Red;
303 g = cmap->Colors[bg].Green;
304 b = cmap->Colors[bg].Blue;
305 bg_val = ARGB_JOIN(0xff, r, g, b);
306
307 per_inc = 100.0 / (((double)w) * h);
308 cur_h = h;
309 cur_w = w;
310 if (cur_h > cache_h) cur_h = cache_h;
311 if (cur_w > cache_w) cur_w = cache_w;
312
313 if (frame->index > 1)
314 {
315 /* get previous frame only frame index is bigger than 1 */
316 DATA32 *ptr_src;
317 Image_Entry_Frame *new_frame = NULL;
318 int cur_frame = frame->index;
319 int start_frame = 1;
320 int j = 0;
321
322 if (_find_close_frame(ie, cur_frame, &new_frame))
323 start_frame = new_frame->index + 1;
324
325 if ((start_frame < 1) || (start_frame > cur_frame))
326 {
327 *error = EVAS_LOAD_ERROR_CORRUPT_FILE;
328 goto error;
329 }
330 /* load previous frame of cur_frame */
331 for (j = start_frame; j < cur_frame ; j++)
332 {
333 if (!evas_image_load_specific_frame(ie, ie->file, j, error))
334 {
335 *error = EVAS_LOAD_ERROR_CORRUPT_FILE;
336 goto error;
337 }
338 }
339 if (!_find_frame(ie, cur_frame - 1, &new_frame))
340 {
341 *error = EVAS_LOAD_ERROR_CORRUPT_FILE;
342 goto error;
343 }
344 else
345 {
346 Gif_Frame *gif_frame = NULL;
347 ptr_src = new_frame->data;
348 if (new_frame->info)
349 {
350 gif_frame = (Gif_Frame *)(new_frame->info);
351 disposal = gif_frame->frame_info.disposal;
352 }
353 switch(disposal) /* we only support disposal flag 0,1,2 */
354 {
355 case 1: /* Do not dispose. need previous frame*/
356 memcpy(ptr, ptr_src, siz);
357 /* composite frames */
358 ptr = ptr + cache_w * y;
359
360 for (i = 0; i < cur_h; i++)
361 {
362 ptr = ptr + x;
363 for (j = 0; j < cur_w; j++)
364 {
365 if (rows[i][j] == alpha)
366 {
367 ptr++ ;
368 }
369 else
370 {
371 r = cmap->Colors[rows[i][j]].Red;
372 g = cmap->Colors[rows[i][j]].Green;
373 b = cmap->Colors[rows[i][j]].Blue;
374 *ptr++ = ARGB_JOIN(0xff, r, g, b);
375 }
376 per += per_inc;
377 }
378 ptr = ptr + (cache_w - (x + cur_w));
379 }
380 break;
381 case 2: /* Restore to background color */
382 memcpy(ptr, ptr_src, siz);
383 /* composite frames */
384 for (i = 0; i < cache_h; i++)
385 {
386 if ((i < y) || (i >= (y + cur_h)))
387 {
388 for (j = 0; j < cache_w; j++)
389 {
390 *ptr = bg_val;
391 ptr++;
392 }
393 }
394 else
395 {
396 int i1, j1;
397 i1 = i -y;
398
399 for (j = 0; j < cache_w; j++)
400 {
401 j1 = j - x;
402 if ((j < x) || (j >= (x + cur_w)))
403 {
404 *ptr = bg_val;
405 ptr++;
406 }
407 else
408 {
409 r = cmap->Colors[rows[i1][j1]].Red;
410 g = cmap->Colors[rows[i1][j1]].Green;
411 b = cmap->Colors[rows[i1][j1]].Blue;
412 *ptr++ = ARGB_JOIN(0xff, r, g, b);
413 }
414 }
415 }
416 }
417 break;
418 case 0: /* No disposal specified */
419 default:
420 memset(ptr, 0, siz);
421 for (i = 0; i < cache_h; i++)
422 {
423 if ((i < y) || (i >= (y + cur_h)))
424 {
425 for (j = 0; j < cache_w; j++)
426 {
427 *ptr = bg_val;
428 ptr++;
429 }
430 }
431 else
432 {
433 int i1, j1;
434 i1 = i -y;
435
436 for (j = 0; j < cache_w; j++)
437 {
438 j1 = j - x;
439 if ((j < x) || (j >= (x + cur_w)))
440 {
441 *ptr = bg_val;
442 ptr++;
443 }
444 else
445 {
446 r = cmap->Colors[rows[i1][j1]].Red;
447 g = cmap->Colors[rows[i1][j1]].Green;
448 b = cmap->Colors[rows[i1][j1]].Blue;
449 *ptr++ = ARGB_JOIN(0xff, r, g, b);
450 }
451 }
452 }
453 }
454 break;
455 }
456 }
457 }
458 else /* first frame decoding */
459 {
460 /* fill background color */
461 for (i = 0; i < cache_h; i++)
462 {
463 if ((i < y) || (i >= (y + cur_h)))
464 {
465 for (j = 0; j < cache_w; j++)
466 {
467 *ptr = bg_val;
468 ptr++;
469 }
470 }
471 else
472 {
473 int i1, j1;
474 i1 = i -y;
475
476 for (j = 0; j < cache_w; j++)
477 {
478 j1 = j - x;
479 if ((j < x) || (j >= (x + cur_w)))
480 {
481 *ptr = bg_val;
482 ptr++;
483 }
484 else
485 {
486 if (rows[i1][j1] == alpha)
487 {
488 ptr++ ;
489 }
490 else
491 {
492 r = cmap->Colors[rows[i1][j1]].Red;
493 g = cmap->Colors[rows[i1][j1]].Green;
494 b = cmap->Colors[rows[i1][j1]].Blue;
495 *ptr++ = ARGB_JOIN(0xff, r, g, b);
496 }
497 }
498 }
499 }
500 }
501 }
502
503 for (i = 0; i < h; i++)
504 {
505 if (rows[i]) free(rows[i]);
506 }
507 if (rows) free(rows);
508 frame->loaded = EINA_TRUE;
509 return EINA_TRUE;
510error:
511 for (i = 0; i < h; i++)
512 {
513 if (rows[i]) free(rows[i]);
514 }
515 if (rows) free(rows);
516 return EINA_FALSE;
517}
518
519static Eina_Bool
520_evas_image_load_frame(Image_Entry *ie, GifFileType *gif, Image_Entry_Frame *frame, Frame_Load_Type type, int *error)
521{
522 GifRecordType rec;
523 int gra_res = 0, img_res = 0;
524 Eina_Bool res = EINA_FALSE;
525 Gif_Frame *gif_frame = NULL;
526
527 if ((!gif) || (!frame)) return EINA_FALSE;
528 gif_frame = (Gif_Frame *) frame->info;
529
530 if (type > LOAD_FRAME_DATA_INFO) return EINA_FALSE;
531
532 do
533 {
534 if (DGifGetRecordType(gif, &rec) == GIF_ERROR) return EINA_FALSE;
535 if (rec == IMAGE_DESC_RECORD_TYPE)
536 {
537 img_res++;
538 break;
539 }
540 else if (rec == EXTENSION_RECORD_TYPE)
541 {
542 int ext_code;
543 GifByteType *ext;
544
545 ext = NULL;
546 DGifGetExtension(gif, &ext_code, &ext);
547 while (ext)
548 {
549 if (ext_code == 0xf9) /* Graphic Control Extension */
550 {
551 gra_res++;
552 /* fill frame info */
553 if ((type == LOAD_FRAME_INFO) || (type == LOAD_FRAME_DATA_INFO))
554 _evas_image_load_frame_graphic_info(frame,ext);
555 }
556 ext = NULL;
557 DGifGetExtensionNext(gif, &ext);
558 }
559 }
560 } while ((rec != TERMINATE_RECORD_TYPE) && (img_res == 0));
561 if (img_res != 1) return EINA_FALSE;
562 if (DGifGetImageDesc(gif) == GIF_ERROR) return EINA_FALSE;
563 if ((type == LOAD_FRAME_INFO) || (type == LOAD_FRAME_DATA_INFO))
564 _evas_image_load_frame_image_des_info(gif, frame);
565
566 if ((type == LOAD_FRAME_DATA) || (type == LOAD_FRAME_DATA_INFO))
567 {
568 res = _evas_image_load_frame_image_data(ie, gif,frame, error);
569 if (!res) return EINA_FALSE;
570 }
571 return EINA_TRUE;
572}
573
574
575/* set frame data to cache entry's data */
576static Eina_Bool
577evas_image_load_file_data_gif_internal(Image_Entry *ie, Image_Entry_Frame *frame, int *error)
578{
579 int w;
580 int h;
581 int dst_x;
582 int dst_y;
583 DATA32 *dst;
584 DATA32 *src;
585 int cache_w, cache_h;
586 size_t siz;
587 Gif_Frame *gif_frame = NULL;
588
589 gif_frame = (Gif_Frame *) frame->info;
590 cache_w = ie->w;
591 cache_h = ie->h;
592 w = gif_frame->image_des.w;
593 h = gif_frame->image_des.h;
594 dst_x = gif_frame->image_des.x;
595 dst_y = gif_frame->image_des.y;
596
597 src = frame->data;
598
599 if (!evas_cache_image_pixels(ie))
600 {
601 evas_cache_image_surface_alloc(ie, cache_w, cache_h);
602 }
603
604 if (!evas_cache_image_pixels(ie))
605 {
606 *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
607 return EINA_FALSE;
608 }
609
610 /* only copy real frame part */
611 siz = cache_w * cache_h * sizeof(DATA32);
612 dst = evas_cache_image_pixels(ie);
613
614 memcpy(dst, src, siz);
615
616 evas_common_image_premul(ie);
617
618 *error = EVAS_LOAD_ERROR_NONE;
619 return EINA_TRUE;
620}
621
622static Eina_Bool
623evas_image_load_file_head_gif(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
624{
625 int fd;
626 GifFileType *gif;
627 GifRecordType rec;
628 int w;
629 int h;
630 int alpha;
631 int loop_count = -1;
632
633 w = 0;
634 h = 0;
635 alpha = -1;
636
637#ifndef __EMX__
638 fd = open(file, O_RDONLY);
639#else
640 fd = open(file, O_RDONLY | O_BINARY);
641#endif
642 if (fd < 0)
643 {
644 *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
645 return EINA_FALSE;
646 }
647
648 gif = DGifOpenFileHandle(fd);
649 if (!gif)
650 {
651 if (fd) close(fd);
652 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
653 return EINA_FALSE;
654 }
655
656 /* check logical screen size */
657 w = gif->SWidth;
658 h = gif->SHeight;
659
660 if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) ||
661 IMG_TOO_BIG(w, h))
662 {
663 DGifCloseFile(gif);
664 if (IMG_TOO_BIG(w, h))
665 *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
666 else
667 *error = EVAS_LOAD_ERROR_GENERIC;
668 return EINA_FALSE;
669 }
670 ie->w = w;
671 ie->h = h;
672
673 do
674 {
675 if (DGifGetRecordType(gif, &rec) == GIF_ERROR)
676 {
677 /* PrintGifError(); */
678 DGifCloseFile(gif);
679 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
680 return EINA_FALSE;
681 }
682
683 /* image descript info */
684 if (rec == IMAGE_DESC_RECORD_TYPE)
685 {
686 int img_code;
687 GifByteType *img;
688
689 if (DGifGetImageDesc(gif) == GIF_ERROR)
690 {
691 /* PrintGifError(); */
692 DGifCloseFile(gif);
693 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
694 return EINA_FALSE;
695 }
696 /* we have to count frame, so use DGifGetCode and skip decoding */
697 if (DGifGetCode(gif, &img_code, &img) == GIF_ERROR)
698 {
699 /* PrintGifError(); */
700 DGifCloseFile(gif);
701 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
702 return EINA_FALSE;
703 }
704 while (img)
705 {
706 img = NULL;
707 DGifGetCodeNext(gif, &img);
708 }
709 }
710 else if (rec == EXTENSION_RECORD_TYPE)
711 {
712 int ext_code;
713 GifByteType *ext;
714
715 ext = NULL;
716 DGifGetExtension(gif, &ext_code, &ext);
717 while (ext)
718 {
719 if (ext_code == 0xf9) /* Graphic Control Extension */
720 {
721 if ((ext[1] & 1) && (alpha < 0)) alpha = (int)ext[4];
722 }
723 else if (ext_code == 0xff) /* application extension */
724 {
725 if (!strncmp ((char*)(&ext[1]), "NETSCAPE2.0", 11) ||
726 !strncmp ((char*)(&ext[1]), "ANIMEXTS1.0", 11))
727 {
728 ext=NULL;
729 DGifGetExtensionNext(gif, &ext);
730
731 if (ext[1] == 0x01)
732 {
733 loop_count = ext[2] + (ext[3] << 8);
734 if (loop_count > 0) loop_count++;
735 }
736 }
737 }
738
739 ext = NULL;
740 DGifGetExtensionNext(gif, &ext);
741 }
742 }
743 } while (rec != TERMINATE_RECORD_TYPE);
744
745 if (alpha >= 0) ie->flags.alpha = 1;
746
747 if (gif->ImageCount > 1)
748 {
749 ie->flags.animated = 1;
750 ie->loop_count = loop_count;
751 ie->loop_hint = EVAS_IMAGE_ANIMATED_HINT_LOOP;
752 ie->frame_count = gif->ImageCount;
753 ie->frames = NULL;
754 }
755
756 DGifCloseFile(gif);
757 *error = EVAS_LOAD_ERROR_NONE;
758 return EINA_TRUE;
759}
760
761static Eina_Bool
762evas_image_load_specific_frame(Image_Entry *ie, const char *file, int frame_index, int *error)
763{
764 int fd;
765 GifFileType *gif;
766 Image_Entry_Frame *frame = NULL;
767 Gif_Frame *gif_frame = NULL;
768
769#ifndef __EMX__
770 fd = open(file, O_RDONLY);
771#else
772 fd = open(file, O_RDONLY | O_BINARY);
773#endif
774 if (fd < 0)
775 {
776 *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
777 return EINA_FALSE;
778 }
779
780 gif = DGifOpenFileHandle(fd);
781 if (!gif)
782 {
783 if (fd) close(fd);
784 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
785 return EINA_FALSE;
786 }
787 if (!_evas_image_skip_frame(gif, frame_index-1))
788 {
789 if (fd) close(fd);
790 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
791 return EINA_FALSE;
792 }
793
794 frame = malloc(sizeof (Image_Entry_Frame));
795 if (!frame)
796 {
797 if (fd) close(fd);
798 *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
799 return EINA_FALSE;
800 }
801
802 gif_frame = malloc(sizeof (Gif_Frame));
803 if (!gif_frame)
804 {
805 if (fd) close(fd);
806 *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
807 return EINA_FALSE;
808 }
809 frame->info = gif_frame;
810 frame->index = frame_index;
811 if (!_evas_image_load_frame(ie,gif, frame, LOAD_FRAME_DATA_INFO,error))
812 {
813 if (fd) close(fd);
814 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
815 return EINA_FALSE;
816 }
817
818 ie->frames = eina_list_append(ie->frames, frame);
819 DGifCloseFile(gif);
820 return EINA_TRUE;
821}
822
823static Eina_Bool
824evas_image_load_file_data_gif(Image_Entry *ie, const char *file, const char *key __UNUSED__, int *error)
825{
826 int cur_frame_index;
827 Image_Entry_Frame *frame = NULL;
828 Eina_Bool hit;
829
830 if(!ie->flags.animated)
831 cur_frame_index = 1;
832 else
833 cur_frame_index = ie->cur_frame;
834
835 if ((ie->flags.animated) &&
836 ((cur_frame_index <0) || (cur_frame_index > FRAME_MAX) || (cur_frame_index > ie->frame_count)))
837 {
838 *error = EVAS_LOAD_ERROR_GENERIC;
839 return EINA_FALSE;
840 }
841
842 /* first time frame is set to be 0. so default is 1 */
843 if (cur_frame_index == 0) cur_frame_index++;
844
845 /* Check current frame exists in hash table */
846 hit = _find_frame(ie, cur_frame_index, &frame);
847
848 /* if current frame exist in has table, check load flag */
849 if (hit)
850 {
851 if (frame->loaded)
852 evas_image_load_file_data_gif_internal(ie,frame,error);
853 else
854 {
855 int fd;
856 GifFileType *gif;
857
858#ifndef __EMX__
859 fd = open(file, O_RDONLY);
860#else
861 fd = open(file, O_RDONLY | O_BINARY);
862#endif
863 if (fd < 0)
864 {
865 *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST;
866 return EINA_FALSE;
867 }
868
869 gif = DGifOpenFileHandle(fd);
870 if (!gif)
871 {
872 if (fd) close(fd);
873 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
874 return EINA_FALSE;
875 }
876 _evas_image_skip_frame(gif, cur_frame_index-1);
877 if (!_evas_image_load_frame(ie, gif, frame, LOAD_FRAME_DATA,error))
878 {
879 if (fd) close(fd);
880 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
881 return EINA_FALSE;
882 }
883 if (!evas_image_load_file_data_gif_internal(ie, frame, error))
884 {
885 if (fd) close(fd);
886 *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT;
887 return EINA_FALSE;
888 }
889 DGifCloseFile(gif);
890 *error = EVAS_LOAD_ERROR_NONE;
891 return EINA_TRUE;
892 }
893 }
894 /* current frame does is not exist */
895 else
896 {
897 if (!evas_image_load_specific_frame(ie, file, cur_frame_index, error))
898 {
899 return EINA_FALSE;
900 }
901 hit = EINA_FALSE;
902 frame = NULL;
903 hit = _find_frame(ie, cur_frame_index, &frame);
904 if (!hit) return EINA_FALSE;
905 if (!evas_image_load_file_data_gif_internal(ie, frame, error))
906 {
907 *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED;
908 return EINA_FALSE;
909 }
910 return EINA_TRUE;
911 }
912 return EINA_FALSE;
913}
914
915static double
916evas_image_load_frame_duration_gif(Image_Entry *ie, const char *file, const int start_frame, const int frame_num)
917{
918 int fd;
919 GifFileType *gif;
920 GifRecordType rec;
921 int done;
922 int current_frame = 1;
923 int remain_frames = frame_num;
924 double duration = 0;
925 int frame_count = 0;
926
927 frame_count = ie->frame_count;
928
929 if (!ie->flags.animated) return -1;
930 if ((start_frame + frame_num) > frame_count) return -1;
931 if (frame_num < 0) return -1;
932
933 done = 0;
934
935#ifndef __EMX__
936 fd = open(file, O_RDONLY);
937#else
938 fd = open(file, O_RDONLY | O_BINARY);
939#endif
940 if (fd < 0) return -1;
941
942 gif = DGifOpenFileHandle(fd);
943 if (!gif)
944 {
945 if (fd) close(fd);
946 return -1;
947 }
948
949 do
950 {
951 if (DGifGetRecordType(gif, &rec) == GIF_ERROR)
952 {
953 rec = TERMINATE_RECORD_TYPE;
954 }
955 if (rec == IMAGE_DESC_RECORD_TYPE)
956 {
957 int img_code;
958 GifByteType *img;
959
960 if (DGifGetImageDesc(gif) == GIF_ERROR)
961 {
962 /* PrintGifError(); */
963 rec = TERMINATE_RECORD_TYPE;
964 }
965 current_frame++;
966 /* we have to count frame, so use DGifGetCode and skip decoding */
967 if (DGifGetCode(gif, &img_code, &img) == GIF_ERROR)
968 {
969 rec = TERMINATE_RECORD_TYPE;
970 }
971 while (img)
972 {
973 img = NULL;
974 DGifGetExtensionNext(gif, &img);
975 }
976 }
977 else if (rec == EXTENSION_RECORD_TYPE)
978 {
979 int ext_code;
980 GifByteType *ext;
981
982 ext = NULL;
983 DGifGetExtension(gif, &ext_code, &ext);
984 while (ext)
985 {
986 if (ext_code == 0xf9) /* Graphic Control Extension */
987 {
988 if ((current_frame >= start_frame) && (current_frame <= frame_count))
989 {
990 int frame_duration = 0;
991 if (remain_frames < 0) break;
992 frame_duration = byte2_to_int (ext[2], ext[3]);
993 if (frame_duration == 0)
994 duration += 0.1;
995 else
996 duration += (double)frame_duration/100;
997 remain_frames --;
998 }
999 }
1000 ext = NULL;
1001 DGifGetExtensionNext(gif, &ext);
1002 }
1003 }
1004 } while (rec != TERMINATE_RECORD_TYPE);
1005
1006 DGifCloseFile(gif);
1007 return duration;
1008}
1009
1010static int
1011module_open(Evas_Module *em)
1012{
1013 if (!em) return 0;
1014 em->functions = (void *)(&evas_image_load_gif_func);
1015 return 1;
1016}
1017
1018static void
1019module_close(Evas_Module *em __UNUSED__)
1020{
1021}
1022
1023static Evas_Module_Api evas_modapi =
1024{
1025 EVAS_MODULE_API_VERSION,
1026 "gif",
1027 "none",
1028 {
1029 module_open,
1030 module_close
1031 }
1032};
1033
1034EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_IMAGE_LOADER, image_loader, gif);
1035
1036#ifndef EVAS_STATIC_BUILD_GIF
1037EVAS_EINA_MODULE_DEFINE(image_loader, gif);
1038#endif
generated by cgit v1.1 at 2024-07-18 01:00:37 +0000