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author | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
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committer | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
commit | dd7595a3475407a7fa96a97393bae8c5220e8762 (patch) | |
tree | e341e911d7eb911a51684a7412ef7f7c7605d28e /libraries/evas/src/modules/loaders/jpeg/evas_image_load_jpeg.c | |
parent | Add the skeleton. (diff) | |
download | SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.zip SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.gz SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.bz2 SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.xz |
Add the base Enlightenment Foundation Libraries - eina, eet, evas, ecore, embryo, and edje.
Note that embryo wont be used, but I'm not sure yet if you can build edje without it.
Diffstat (limited to 'libraries/evas/src/modules/loaders/jpeg/evas_image_load_jpeg.c')
-rw-r--r-- | libraries/evas/src/modules/loaders/jpeg/evas_image_load_jpeg.c | 1265 |
1 files changed, 1265 insertions, 0 deletions
diff --git a/libraries/evas/src/modules/loaders/jpeg/evas_image_load_jpeg.c b/libraries/evas/src/modules/loaders/jpeg/evas_image_load_jpeg.c new file mode 100644 index 0000000..0dbabab --- /dev/null +++ b/libraries/evas/src/modules/loaders/jpeg/evas_image_load_jpeg.c | |||
@@ -0,0 +1,1265 @@ | |||
1 | #ifdef HAVE_CONFIG_H | ||
2 | # include <config.h> | ||
3 | #endif | ||
4 | |||
5 | #include <stdio.h> | ||
6 | |||
7 | #ifdef HAVE_EVIL | ||
8 | # include <Evil.h> | ||
9 | #endif | ||
10 | |||
11 | #include <setjmp.h> | ||
12 | #include <jpeglib.h> | ||
13 | |||
14 | #include "evas_common.h" | ||
15 | #include "evas_private.h" | ||
16 | |||
17 | |||
18 | typedef struct _JPEG_error_mgr *emptr; | ||
19 | struct _JPEG_error_mgr | ||
20 | { | ||
21 | struct jpeg_error_mgr pub; | ||
22 | jmp_buf setjmp_buffer; | ||
23 | }; | ||
24 | |||
25 | static void _JPEGFatalErrorHandler(j_common_ptr cinfo); | ||
26 | static void _JPEGErrorHandler(j_common_ptr cinfo); | ||
27 | static void _JPEGErrorHandler2(j_common_ptr cinfo, int msg_level); | ||
28 | |||
29 | static Eina_Bool evas_image_load_file_head_jpeg_internal(Image_Entry *ie, | ||
30 | void *map, | ||
31 | size_t len, | ||
32 | int *error) EINA_ARG_NONNULL(1, 2, 4); | ||
33 | static Eina_Bool evas_image_load_file_data_jpeg_internal(Image_Entry *ie, | ||
34 | void *map, | ||
35 | size_t len, | ||
36 | int *error) EINA_ARG_NONNULL(1, 2, 4); | ||
37 | #if 0 /* not used at the moment */ | ||
38 | static int evas_image_load_file_data_jpeg_alpha_internal(Image_Entry *ie, FILE *f) EINA_ARG_NONNULL(1, 2); | ||
39 | #endif | ||
40 | |||
41 | static Eina_Bool evas_image_load_file_head_jpeg(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4); | ||
42 | static Eina_Bool evas_image_load_file_data_jpeg(Image_Entry *ie, const char *file, const char *key, int *error) EINA_ARG_NONNULL(1, 2, 4); | ||
43 | |||
44 | static Evas_Image_Load_Func evas_image_load_jpeg_func = | ||
45 | { | ||
46 | EINA_TRUE, | ||
47 | evas_image_load_file_head_jpeg, | ||
48 | evas_image_load_file_data_jpeg, | ||
49 | NULL | ||
50 | }; | ||
51 | |||
52 | |||
53 | static void | ||
54 | _JPEGFatalErrorHandler(j_common_ptr cinfo) | ||
55 | { | ||
56 | emptr errmgr; | ||
57 | |||
58 | errmgr = (emptr) cinfo->err; | ||
59 | /* cinfo->err->output_message(cinfo);*/ | ||
60 | longjmp(errmgr->setjmp_buffer, 1); | ||
61 | return; | ||
62 | } | ||
63 | |||
64 | static void | ||
65 | _JPEGErrorHandler(j_common_ptr cinfo __UNUSED__) | ||
66 | { | ||
67 | /* emptr errmgr; */ | ||
68 | |||
69 | /* errmgr = (emptr) cinfo->err; */ | ||
70 | /* cinfo->err->output_message(cinfo);*/ | ||
71 | /* longjmp(errmgr->setjmp_buffer, 1);*/ | ||
72 | return; | ||
73 | } | ||
74 | |||
75 | static void | ||
76 | _JPEGErrorHandler2(j_common_ptr cinfo __UNUSED__, int msg_level __UNUSED__) | ||
77 | { | ||
78 | /* emptr errmgr; */ | ||
79 | |||
80 | /* errmgr = (emptr) cinfo->err; */ | ||
81 | /* cinfo->err->output_message(cinfo);*/ | ||
82 | /* longjmp(errmgr->setjmp_buffer, 1);*/ | ||
83 | return; | ||
84 | } | ||
85 | |||
86 | struct jpeg_membuf_src | ||
87 | { | ||
88 | struct jpeg_source_mgr pub; | ||
89 | |||
90 | const unsigned char *buf; | ||
91 | size_t len; | ||
92 | struct jpeg_membuf_src *self; | ||
93 | }; | ||
94 | |||
95 | static void | ||
96 | _evas_jpeg_membuf_src_init(j_decompress_ptr cinfo __UNUSED__) | ||
97 | { | ||
98 | } | ||
99 | |||
100 | static boolean | ||
101 | _evas_jpeg_membuf_src_fill(j_decompress_ptr cinfo) | ||
102 | { | ||
103 | static const JOCTET jpeg_eoi[2] = { 0xFF, JPEG_EOI }; | ||
104 | struct jpeg_membuf_src *src = (struct jpeg_membuf_src *)cinfo->src; | ||
105 | |||
106 | src->pub.bytes_in_buffer = sizeof(jpeg_eoi); | ||
107 | src->pub.next_input_byte = jpeg_eoi; | ||
108 | |||
109 | return TRUE; | ||
110 | } | ||
111 | |||
112 | static void | ||
113 | _evas_jpeg_membuf_src_skip(j_decompress_ptr cinfo, | ||
114 | long num_bytes) | ||
115 | { | ||
116 | struct jpeg_membuf_src *src = (struct jpeg_membuf_src *)cinfo->src; | ||
117 | |||
118 | if ((((long)src->pub.bytes_in_buffer - (long)src->len) > num_bytes) || | ||
119 | ((long)src->pub.bytes_in_buffer < num_bytes)) | ||
120 | { | ||
121 | (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo)); | ||
122 | return; | ||
123 | } | ||
124 | src->pub.bytes_in_buffer -= num_bytes; | ||
125 | src->pub.next_input_byte += num_bytes; | ||
126 | } | ||
127 | |||
128 | static void | ||
129 | _evas_jpeg_membuf_src_term(j_decompress_ptr cinfo) | ||
130 | { | ||
131 | struct jpeg_membuf_src *src = (struct jpeg_membuf_src *)cinfo->src; | ||
132 | if (!src) return; | ||
133 | free(src); | ||
134 | cinfo->src = NULL; | ||
135 | } | ||
136 | |||
137 | static int | ||
138 | _evas_jpeg_membuf_src(j_decompress_ptr cinfo, | ||
139 | void *map, size_t length) | ||
140 | { | ||
141 | struct jpeg_membuf_src *src; | ||
142 | |||
143 | src = calloc(1, sizeof(*src)); | ||
144 | if (!src) | ||
145 | return -1; | ||
146 | |||
147 | src->self = src; | ||
148 | |||
149 | cinfo->src = &src->pub; | ||
150 | src->buf = map; | ||
151 | src->len = length; | ||
152 | src->pub.init_source = _evas_jpeg_membuf_src_init; | ||
153 | src->pub.fill_input_buffer = _evas_jpeg_membuf_src_fill; | ||
154 | src->pub.skip_input_data = _evas_jpeg_membuf_src_skip; | ||
155 | src->pub.resync_to_restart = jpeg_resync_to_restart; | ||
156 | src->pub.term_source = _evas_jpeg_membuf_src_term; | ||
157 | src->pub.bytes_in_buffer = src->len; | ||
158 | src->pub.next_input_byte = src->buf; | ||
159 | |||
160 | return 0; | ||
161 | } | ||
162 | |||
163 | /*! Magic number for EXIF header & App1*/ | ||
164 | static const unsigned char ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00}; | ||
165 | static const unsigned char App1[] = {0xff, 0xe1}; | ||
166 | typedef enum { | ||
167 | EXIF_BYTE_ALIGN_II, | ||
168 | EXIF_BYTE_ALIGN_MM | ||
169 | } ExifByteAlign; | ||
170 | |||
171 | static int | ||
172 | _get_orientation(void *map, size_t length) | ||
173 | { | ||
174 | char *buf; | ||
175 | char orientation[2]; | ||
176 | ExifByteAlign byte_align; | ||
177 | unsigned int num_directory = 0; | ||
178 | unsigned int i, j; | ||
179 | int direction; | ||
180 | |||
181 | /* open file and get 22 byte frome file */ | ||
182 | if (!map) return 0; | ||
183 | /* 1. read 22byte */ | ||
184 | if (length < 22) return 0; | ||
185 | buf = (char *)map; | ||
186 | |||
187 | /* 2. check 2,3 bypte with APP1(0xFFE1) */ | ||
188 | if (memcmp(buf + 2, App1, sizeof (App1))) return 0; | ||
189 | |||
190 | /* 3. check 6~11bype with Exif Header (0x45786966 0000) */ | ||
191 | if (memcmp(buf + 6, ExifHeader, sizeof (ExifHeader))) return 0; | ||
192 | |||
193 | /* 4. get 12&13 byte get info of "II(0x4949)" or "MM(0x4d4d)" */ | ||
194 | /* 5. get [20]&[21] get directory entry # */ | ||
195 | if (!strncmp(buf + 12, "MM", 2)) | ||
196 | { | ||
197 | byte_align = EXIF_BYTE_ALIGN_MM; | ||
198 | num_directory = ((*(buf + 20) << 8) + *(buf + 21)); | ||
199 | orientation[0] = 0x01; | ||
200 | orientation[1] = 0x12; | ||
201 | } | ||
202 | else if (!strncmp(buf + 12, "II", 2)) | ||
203 | { | ||
204 | byte_align = EXIF_BYTE_ALIGN_II; | ||
205 | num_directory = ((*(buf + 21) << 8) + *(buf + 20)); | ||
206 | orientation[0] = 0x12; | ||
207 | orientation[1] = 0x01; | ||
208 | } | ||
209 | else return 0; | ||
210 | |||
211 | buf = map + 22; | ||
212 | |||
213 | if (length < (12 * num_directory + 22)) return 0; | ||
214 | |||
215 | j = 0; | ||
216 | |||
217 | for (i = 0; i < num_directory; i++ ) | ||
218 | { | ||
219 | if (!strncmp(buf + j, orientation, 2)) | ||
220 | { | ||
221 | /*get orientation tag */ | ||
222 | if (byte_align == EXIF_BYTE_ALIGN_MM) | ||
223 | direction = *(buf+ j + 11); | ||
224 | else direction = *(buf+ j + 8); | ||
225 | switch (direction) | ||
226 | { | ||
227 | case 3: | ||
228 | case 4: | ||
229 | return 180; | ||
230 | case 6: | ||
231 | case 7: | ||
232 | return 90; | ||
233 | case 5: | ||
234 | case 8: | ||
235 | return 270; | ||
236 | default: | ||
237 | return 0; | ||
238 | } | ||
239 | } | ||
240 | else | ||
241 | j = j + 12; | ||
242 | } | ||
243 | return 0; | ||
244 | } | ||
245 | |||
246 | static Eina_Bool | ||
247 | evas_image_load_file_head_jpeg_internal(Image_Entry *ie, | ||
248 | void *map, size_t length, | ||
249 | int *error) | ||
250 | { | ||
251 | unsigned int w, h, scalew, scaleh; | ||
252 | struct jpeg_decompress_struct cinfo; | ||
253 | struct _JPEG_error_mgr jerr; | ||
254 | |||
255 | /* for rotation decoding */ | ||
256 | int degree = 0; | ||
257 | Eina_Bool change_wh = EINA_FALSE; | ||
258 | unsigned int load_opts_w = 0, load_opts_h = 0; | ||
259 | |||
260 | cinfo.err = jpeg_std_error(&(jerr.pub)); | ||
261 | jerr.pub.error_exit = _JPEGFatalErrorHandler; | ||
262 | jerr.pub.emit_message = _JPEGErrorHandler2; | ||
263 | jerr.pub.output_message = _JPEGErrorHandler; | ||
264 | if (setjmp(jerr.setjmp_buffer)) | ||
265 | { | ||
266 | jpeg_destroy_decompress(&cinfo); | ||
267 | _evas_jpeg_membuf_src_term(&cinfo); | ||
268 | if (cinfo.saw_JFIF_marker) | ||
269 | *error = EVAS_LOAD_ERROR_CORRUPT_FILE; | ||
270 | else | ||
271 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
272 | return EINA_FALSE; | ||
273 | } | ||
274 | jpeg_create_decompress(&cinfo); | ||
275 | |||
276 | if (_evas_jpeg_membuf_src(&cinfo, map, length)) | ||
277 | { | ||
278 | jpeg_destroy_decompress(&cinfo); | ||
279 | _evas_jpeg_membuf_src_term(&cinfo); | ||
280 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
281 | return EINA_FALSE; | ||
282 | } | ||
283 | |||
284 | jpeg_read_header(&cinfo, TRUE); | ||
285 | cinfo.do_fancy_upsampling = FALSE; | ||
286 | cinfo.do_block_smoothing = FALSE; | ||
287 | cinfo.dct_method = JDCT_ISLOW; // JDCT_FLOAT JDCT_IFAST(quality loss) | ||
288 | cinfo.dither_mode = JDITHER_ORDERED; | ||
289 | jpeg_start_decompress(&cinfo); | ||
290 | |||
291 | /* rotation decoding */ | ||
292 | if (ie->load_opts.orientation) | ||
293 | { | ||
294 | degree = _get_orientation(map, length); | ||
295 | if (degree != 0) | ||
296 | { | ||
297 | ie->load_opts.degree = degree; | ||
298 | ie->flags.rotated = EINA_TRUE; | ||
299 | |||
300 | if (degree == 90 || degree == 270) | ||
301 | change_wh = EINA_TRUE; | ||
302 | } | ||
303 | |||
304 | } | ||
305 | |||
306 | /* head decoding */ | ||
307 | w = cinfo.output_width; | ||
308 | h = cinfo.output_height; | ||
309 | if ((w < 1) || (h < 1) || (w > IMG_MAX_SIZE) || (h > IMG_MAX_SIZE) || | ||
310 | (IMG_TOO_BIG(w, h))) | ||
311 | { | ||
312 | jpeg_destroy_decompress(&cinfo); | ||
313 | _evas_jpeg_membuf_src_term(&cinfo); | ||
314 | if (IMG_TOO_BIG(w, h)) | ||
315 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
316 | else | ||
317 | *error = EVAS_LOAD_ERROR_GENERIC; | ||
318 | return EINA_FALSE; | ||
319 | } | ||
320 | if (ie->load_opts.scale_down_by > 1) | ||
321 | { | ||
322 | w /= ie->load_opts.scale_down_by; | ||
323 | h /= ie->load_opts.scale_down_by; | ||
324 | } | ||
325 | else if (ie->load_opts.dpi > 0.0) | ||
326 | { | ||
327 | w = (w * ie->load_opts.dpi) / 90.0; | ||
328 | h = (h * ie->load_opts.dpi) / 90.0; | ||
329 | } | ||
330 | else if ((ie->load_opts.w > 0) && (ie->load_opts.h > 0)) | ||
331 | { | ||
332 | unsigned int w2 = w, h2 = h; | ||
333 | /* user set load_opts' w,h on the assumption | ||
334 | that image already rotated according to it's orientation info */ | ||
335 | if (change_wh) | ||
336 | { | ||
337 | load_opts_w = ie->load_opts.w; | ||
338 | load_opts_h = ie->load_opts.h; | ||
339 | ie->load_opts.w = load_opts_h; | ||
340 | ie->load_opts.h = load_opts_w; | ||
341 | } | ||
342 | |||
343 | if (ie->load_opts.w > 0) | ||
344 | { | ||
345 | w2 = ie->load_opts.w; | ||
346 | h2 = (ie->load_opts.w * h) / w; | ||
347 | if ((ie->load_opts.h > 0) && (h2 > ie->load_opts.h)) | ||
348 | { | ||
349 | unsigned int w3; | ||
350 | h2 = ie->load_opts.h; | ||
351 | w3 = (ie->load_opts.h * w) / h; | ||
352 | if (w3 > w2) | ||
353 | w2 = w3; | ||
354 | } | ||
355 | } | ||
356 | else if (ie->load_opts.h > 0) | ||
357 | { | ||
358 | h2 = ie->load_opts.h; | ||
359 | w2 = (ie->load_opts.h * w) / h; | ||
360 | } | ||
361 | w = w2; | ||
362 | h = h2; | ||
363 | if (change_wh) | ||
364 | { | ||
365 | ie->load_opts.w = load_opts_w; | ||
366 | ie->load_opts.h = load_opts_h; | ||
367 | } | ||
368 | } | ||
369 | if (w < 1) w = 1; | ||
370 | if (h < 1) h = 1; | ||
371 | |||
372 | if ((w != cinfo.output_width) || (h != cinfo.output_height)) | ||
373 | { | ||
374 | scalew = cinfo.output_width / w; | ||
375 | scaleh = cinfo.output_height / h; | ||
376 | |||
377 | ie->scale = scalew; | ||
378 | if (scaleh < scalew) ie->scale = scaleh; | ||
379 | |||
380 | if (ie->scale > 8) ie->scale = 8; | ||
381 | else if (ie->scale < 1) ie->scale = 1; | ||
382 | |||
383 | if (ie->scale == 3) ie->scale = 2; | ||
384 | else if (ie->scale == 5) ie->scale = 4; | ||
385 | else if (ie->scale == 6) ie->scale = 4; | ||
386 | else if (ie->scale == 7) ie->scale = 4; | ||
387 | } | ||
388 | |||
389 | if (ie->scale > 1) | ||
390 | { | ||
391 | jpeg_destroy_decompress(&cinfo); | ||
392 | _evas_jpeg_membuf_src_term(&cinfo); | ||
393 | jpeg_create_decompress(&cinfo); | ||
394 | |||
395 | if (_evas_jpeg_membuf_src(&cinfo, map, length)) | ||
396 | { | ||
397 | jpeg_destroy_decompress(&cinfo); | ||
398 | _evas_jpeg_membuf_src_term(&cinfo); | ||
399 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
400 | return EINA_FALSE; | ||
401 | } | ||
402 | |||
403 | jpeg_read_header(&cinfo, TRUE); | ||
404 | cinfo.do_fancy_upsampling = FALSE; | ||
405 | cinfo.do_block_smoothing = FALSE; | ||
406 | cinfo.scale_num = 1; | ||
407 | cinfo.scale_denom = ie->scale; | ||
408 | jpeg_calc_output_dimensions(&(cinfo)); | ||
409 | jpeg_start_decompress(&cinfo); | ||
410 | } | ||
411 | |||
412 | ie->w = cinfo.output_width; | ||
413 | ie->h = cinfo.output_height; | ||
414 | |||
415 | // be nice and clip region to image. if its totally outside, fail load | ||
416 | if ((ie->load_opts.region.w > 0) && (ie->load_opts.region.h > 0)) | ||
417 | { | ||
418 | unsigned int load_region_x = 0, load_region_y = 0; | ||
419 | unsigned int load_region_w = 0, load_region_h = 0; | ||
420 | if (ie->flags.rotated) | ||
421 | { | ||
422 | load_region_x = ie->load_opts.region.x; | ||
423 | load_region_y = ie->load_opts.region.y; | ||
424 | load_region_w = ie->load_opts.region.w; | ||
425 | load_region_h = ie->load_opts.region.h; | ||
426 | |||
427 | switch (degree) | ||
428 | { | ||
429 | case 90: | ||
430 | ie->load_opts.region.x = load_region_y; | ||
431 | ie->load_opts.region.y = h - (load_region_x + load_region_w); | ||
432 | ie->load_opts.region.w = load_region_h; | ||
433 | ie->load_opts.region.h = load_region_w; | ||
434 | break; | ||
435 | case 180: | ||
436 | ie->load_opts.region.x = w - (load_region_x+ load_region_w); | ||
437 | ie->load_opts.region.y = h - (load_region_y + load_region_h); | ||
438 | |||
439 | break; | ||
440 | case 270: | ||
441 | ie->load_opts.region.x = w - (load_region_y + load_region_h); | ||
442 | ie->load_opts.region.y = load_region_x; | ||
443 | ie->load_opts.region.w = load_region_h; | ||
444 | ie->load_opts.region.h = load_region_w; | ||
445 | break; | ||
446 | default: | ||
447 | break; | ||
448 | } | ||
449 | |||
450 | } | ||
451 | RECTS_CLIP_TO_RECT(ie->load_opts.region.x, ie->load_opts.region.y, | ||
452 | ie->load_opts.region.w, ie->load_opts.region.h, | ||
453 | 0, 0, ie->w, ie->h); | ||
454 | if ((ie->load_opts.region.w <= 0) || (ie->load_opts.region.h <= 0)) | ||
455 | { | ||
456 | jpeg_destroy_decompress(&cinfo); | ||
457 | _evas_jpeg_membuf_src_term(&cinfo); | ||
458 | *error = EVAS_LOAD_ERROR_GENERIC; | ||
459 | return EINA_FALSE; | ||
460 | } | ||
461 | ie->w = ie->load_opts.region.w; | ||
462 | ie->h = ie->load_opts.region.h; | ||
463 | if (ie->flags.rotated) | ||
464 | { | ||
465 | ie->load_opts.region.x = load_region_x; | ||
466 | ie->load_opts.region.y = load_region_y; | ||
467 | ie->load_opts.region.w = load_region_w; | ||
468 | ie->load_opts.region.h = load_region_h; | ||
469 | } | ||
470 | } | ||
471 | /* end head decoding */ | ||
472 | |||
473 | if (change_wh) | ||
474 | { | ||
475 | unsigned int tmp; | ||
476 | tmp = ie->w; | ||
477 | ie->w = ie->h; | ||
478 | ie->h = tmp; | ||
479 | } | ||
480 | jpeg_destroy_decompress(&cinfo); | ||
481 | _evas_jpeg_membuf_src_term(&cinfo); | ||
482 | *error = EVAS_LOAD_ERROR_NONE; | ||
483 | return EINA_TRUE; | ||
484 | } | ||
485 | |||
486 | /* | ||
487 | static double | ||
488 | get_time(void) | ||
489 | { | ||
490 | struct timeval timev; | ||
491 | |||
492 | gettimeofday(&timev, NULL); | ||
493 | return (double)timev.tv_sec + (((double)timev.tv_usec) / 1000000); | ||
494 | } | ||
495 | */ | ||
496 | |||
497 | static Eina_Bool | ||
498 | evas_image_load_file_data_jpeg_internal(Image_Entry *ie, | ||
499 | void *map, size_t size, | ||
500 | int *error) | ||
501 | { | ||
502 | unsigned int w, h; | ||
503 | struct jpeg_decompress_struct cinfo; | ||
504 | struct _JPEG_error_mgr jerr; | ||
505 | DATA8 *ptr, *line[16], *data; | ||
506 | DATA32 *ptr2, *ptr_rotate = NULL; | ||
507 | unsigned int x, y, l, i, scans; | ||
508 | int region = 0; | ||
509 | /* rotation setting */ | ||
510 | unsigned int tmp; | ||
511 | unsigned int load_region_x = 0, load_region_y = 0; | ||
512 | unsigned int load_region_w = 0, load_region_h = 0; | ||
513 | int degree = 0; | ||
514 | Eina_Bool change_wh = EINA_FALSE; | ||
515 | Eina_Bool line_done = EINA_FALSE; | ||
516 | |||
517 | if (ie->flags.rotated) | ||
518 | { | ||
519 | degree = ie->load_opts.degree; | ||
520 | if (degree == 90 || degree == 270) | ||
521 | change_wh = EINA_TRUE; | ||
522 | } | ||
523 | |||
524 | cinfo.err = jpeg_std_error(&(jerr.pub)); | ||
525 | jerr.pub.error_exit = _JPEGFatalErrorHandler; | ||
526 | jerr.pub.emit_message = _JPEGErrorHandler2; | ||
527 | jerr.pub.output_message = _JPEGErrorHandler; | ||
528 | if (setjmp(jerr.setjmp_buffer)) | ||
529 | { | ||
530 | jpeg_destroy_decompress(&cinfo); | ||
531 | _evas_jpeg_membuf_src_term(&cinfo); | ||
532 | *error = EVAS_LOAD_ERROR_CORRUPT_FILE; | ||
533 | return EINA_FALSE; | ||
534 | } | ||
535 | jpeg_create_decompress(&cinfo); | ||
536 | |||
537 | if (_evas_jpeg_membuf_src(&cinfo, map, size)) | ||
538 | { | ||
539 | jpeg_destroy_decompress(&cinfo); | ||
540 | _evas_jpeg_membuf_src_term(&cinfo); | ||
541 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
542 | return 0; | ||
543 | } | ||
544 | |||
545 | jpeg_read_header(&cinfo, TRUE); | ||
546 | cinfo.do_fancy_upsampling = FALSE; | ||
547 | cinfo.do_block_smoothing = FALSE; | ||
548 | cinfo.dct_method = JDCT_ISLOW; // JDCT_FLOAT JDCT_IFAST(quality loss) | ||
549 | cinfo.dither_mode = JDITHER_ORDERED; | ||
550 | |||
551 | if (ie->scale > 1) | ||
552 | { | ||
553 | cinfo.scale_num = 1; | ||
554 | cinfo.scale_denom = ie->scale; | ||
555 | } | ||
556 | |||
557 | /* Colorspace conversion options */ | ||
558 | /* libjpeg can do the following conversions: */ | ||
559 | /* GRAYSCLAE => RGB YCbCr => RGB and YCCK => CMYK */ | ||
560 | switch (cinfo.jpeg_color_space) | ||
561 | { | ||
562 | case JCS_UNKNOWN: | ||
563 | break; | ||
564 | case JCS_GRAYSCALE: | ||
565 | case JCS_RGB: | ||
566 | case JCS_YCbCr: | ||
567 | cinfo.out_color_space = JCS_RGB; | ||
568 | break; | ||
569 | case JCS_CMYK: | ||
570 | case JCS_YCCK: | ||
571 | cinfo.out_color_space = JCS_CMYK; | ||
572 | break; | ||
573 | } | ||
574 | |||
575 | /* head decoding */ | ||
576 | jpeg_calc_output_dimensions(&(cinfo)); | ||
577 | jpeg_start_decompress(&cinfo); | ||
578 | |||
579 | w = cinfo.output_width; | ||
580 | h = cinfo.output_height; | ||
581 | |||
582 | if (change_wh) | ||
583 | { | ||
584 | tmp = ie->w; | ||
585 | ie->w = ie->h; | ||
586 | ie->h = tmp; | ||
587 | } | ||
588 | |||
589 | if ((ie->load_opts.region.w > 0) && (ie->load_opts.region.h > 0)) | ||
590 | { | ||
591 | region = 1; | ||
592 | |||
593 | if (ie->flags.rotated) | ||
594 | { | ||
595 | load_region_x = ie->load_opts.region.x; | ||
596 | load_region_y = ie->load_opts.region.y; | ||
597 | load_region_w = ie->load_opts.region.w; | ||
598 | load_region_h = ie->load_opts.region.h; | ||
599 | |||
600 | switch (degree) | ||
601 | { | ||
602 | case 90: | ||
603 | ie->load_opts.region.x = load_region_y; | ||
604 | ie->load_opts.region.y = h - (load_region_x + load_region_w); | ||
605 | ie->load_opts.region.w = load_region_h; | ||
606 | ie->load_opts.region.h = load_region_w; | ||
607 | break; | ||
608 | case 180: | ||
609 | ie->load_opts.region.x = w - (load_region_x+ load_region_w); | ||
610 | ie->load_opts.region.y = h - (load_region_y + load_region_h); | ||
611 | |||
612 | break; | ||
613 | case 270: | ||
614 | ie->load_opts.region.x = w - (load_region_y + load_region_h); | ||
615 | ie->load_opts.region.y = load_region_x; | ||
616 | ie->load_opts.region.w = load_region_h; | ||
617 | ie->load_opts.region.h = load_region_w; | ||
618 | break; | ||
619 | default: | ||
620 | break; | ||
621 | } | ||
622 | |||
623 | } | ||
624 | #ifdef BUILD_LOADER_JPEG_REGION | ||
625 | cinfo.region_x = ie->load_opts.region.x; | ||
626 | cinfo.region_y = ie->load_opts.region.y; | ||
627 | cinfo.region_w = ie->load_opts.region.w; | ||
628 | cinfo.region_h = ie->load_opts.region.h; | ||
629 | #endif | ||
630 | } | ||
631 | if ((!region) && ((w != ie->w) || (h != ie->h))) | ||
632 | { | ||
633 | // race condition, the file could have change from when we call header | ||
634 | // this test will not solve the problem with region code. | ||
635 | jpeg_destroy_decompress(&cinfo); | ||
636 | _evas_jpeg_membuf_src_term(&cinfo); | ||
637 | *error = EVAS_LOAD_ERROR_GENERIC; | ||
638 | return EINA_FALSE; | ||
639 | } | ||
640 | if ((region) && | ||
641 | ((ie->w != ie->load_opts.region.w) || (ie->h != ie->load_opts.region.h))) | ||
642 | { | ||
643 | ie->w = ie->load_opts.region.w; | ||
644 | ie->h = ie->load_opts.region.h; | ||
645 | } | ||
646 | |||
647 | if (!(((cinfo.out_color_space == JCS_RGB) && | ||
648 | ((cinfo.output_components == 3) || (cinfo.output_components == 1))) || | ||
649 | ((cinfo.out_color_space == JCS_CMYK) && (cinfo.output_components == 4)))) | ||
650 | { | ||
651 | jpeg_destroy_decompress(&cinfo); | ||
652 | _evas_jpeg_membuf_src_term(&cinfo); | ||
653 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
654 | return EINA_FALSE; | ||
655 | } | ||
656 | |||
657 | /* end head decoding */ | ||
658 | /* data decoding */ | ||
659 | if (cinfo.rec_outbuf_height > 16) | ||
660 | { | ||
661 | jpeg_destroy_decompress(&cinfo); | ||
662 | _evas_jpeg_membuf_src_term(&cinfo); | ||
663 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
664 | return EINA_FALSE; | ||
665 | } | ||
666 | data = alloca(w * 16 * cinfo.output_components); | ||
667 | evas_cache_image_surface_alloc(ie, ie->w, ie->h); | ||
668 | if (ie->flags.loaded) | ||
669 | { | ||
670 | jpeg_destroy_decompress(&cinfo); | ||
671 | _evas_jpeg_membuf_src_term(&cinfo); | ||
672 | *error = EVAS_LOAD_ERROR_NONE; | ||
673 | if (region && ie->flags.rotated) | ||
674 | { | ||
675 | ie->load_opts.region.x = load_region_x; | ||
676 | ie->load_opts.region.y = load_region_y; | ||
677 | ie->load_opts.region.w = load_region_w; | ||
678 | ie->load_opts.region.h = load_region_h; | ||
679 | } | ||
680 | return EINA_TRUE; | ||
681 | } | ||
682 | if ((ie->flags.rotated) && change_wh) | ||
683 | { | ||
684 | ptr2 = malloc(ie->w * ie->h * sizeof(DATA32)); | ||
685 | ptr_rotate = ptr2; | ||
686 | } | ||
687 | else | ||
688 | ptr2 = evas_cache_image_pixels(ie); | ||
689 | |||
690 | if (!ptr2) | ||
691 | { | ||
692 | *error = EVAS_LOAD_ERROR_RESOURCE_ALLOCATION_FAILED; | ||
693 | return EINA_FALSE; | ||
694 | } | ||
695 | |||
696 | /* We handle first CMYK (4 components) */ | ||
697 | if (cinfo.output_components == 4) | ||
698 | { | ||
699 | // FIXME: handle region | ||
700 | for (i = 0; (int)i < cinfo.rec_outbuf_height; i++) | ||
701 | line[i] = data + (i * w * 4); | ||
702 | for (l = 0; l < h; l += cinfo.rec_outbuf_height) | ||
703 | { | ||
704 | jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height); | ||
705 | scans = cinfo.rec_outbuf_height; | ||
706 | if ((h - l) < scans) scans = h - l; | ||
707 | ptr = data; | ||
708 | if (!region) | ||
709 | { | ||
710 | for (y = 0; y < scans; y++) | ||
711 | { | ||
712 | if (cinfo.saw_Adobe_marker) | ||
713 | { | ||
714 | for (x = 0; x < w; x++) | ||
715 | { | ||
716 | /* According to libjpeg doc, Photoshop inverse the values of C, M, Y and K, */ | ||
717 | /* that is C is replaces by 255 - C, etc...*/ | ||
718 | /* See the comment below for the computation of RGB values from CMYK ones. */ | ||
719 | *ptr2 = | ||
720 | (0xff000000) | | ||
721 | ((ptr[0] * ptr[3] / 255) << 16) | | ||
722 | ((ptr[1] * ptr[3] / 255) << 8) | | ||
723 | ((ptr[2] * ptr[3] / 255)); | ||
724 | ptr += 4; | ||
725 | ptr2++; | ||
726 | } | ||
727 | } | ||
728 | else | ||
729 | { | ||
730 | for (x = 0; x < w; x++) | ||
731 | { | ||
732 | /* Conversion from CMYK to RGB is done in 2 steps: */ | ||
733 | /* CMYK => CMY => RGB (see http://www.easyrgb.com/index.php?X=MATH) */ | ||
734 | /* after computation, if C, M, Y and K are between 0 and 1, we have: */ | ||
735 | /* R = (1 - C) * (1 - K) * 255 */ | ||
736 | /* G = (1 - M) * (1 - K) * 255 */ | ||
737 | /* B = (1 - Y) * (1 - K) * 255 */ | ||
738 | /* libjpeg stores CMYK values between 0 and 255, */ | ||
739 | /* so we replace C by C * 255 / 255, etc... and we obtain: */ | ||
740 | /* R = (255 - C) * (255 - K) / 255 */ | ||
741 | /* G = (255 - M) * (255 - K) / 255 */ | ||
742 | /* B = (255 - Y) * (255 - K) / 255 */ | ||
743 | /* with C, M, Y and K between 0 and 255. */ | ||
744 | *ptr2 = | ||
745 | (0xff000000) | | ||
746 | (((255 - ptr[0]) * (255 - ptr[3]) / 255) << 16) | | ||
747 | (((255 - ptr[1]) * (255 - ptr[3]) / 255) << 8) | | ||
748 | (((255 - ptr[2]) * (255 - ptr[3]) / 255)); | ||
749 | ptr += 4; | ||
750 | ptr2++; | ||
751 | } | ||
752 | } | ||
753 | } | ||
754 | } | ||
755 | else | ||
756 | { | ||
757 | // if line # > region last line, break | ||
758 | if (l >= (ie->load_opts.region.y + ie->load_opts.region.h)) | ||
759 | { | ||
760 | line_done = EINA_TRUE; | ||
761 | /* if rotation flag is set , we have to rotate image */ | ||
762 | goto done; | ||
763 | /*jpeg_destroy_decompress(&cinfo); | ||
764 | _evas_jpeg_membuf_src_term(&cinfo); | ||
765 | *error = EVAS_LOAD_ERROR_NONE; | ||
766 | return EINA_FALSE;*/ | ||
767 | } | ||
768 | // els if scan block intersects region start or later | ||
769 | else if ((l + scans) > | ||
770 | (ie->load_opts.region.y)) | ||
771 | { | ||
772 | for (y = 0; y < scans; y++) | ||
773 | { | ||
774 | if (((y + l) >= ie->load_opts.region.y) && | ||
775 | ((y + l) < (ie->load_opts.region.y + ie->load_opts.region.h))) | ||
776 | { | ||
777 | ptr += ie->load_opts.region.x; | ||
778 | if (cinfo.saw_Adobe_marker) | ||
779 | { | ||
780 | for (x = 0; x < ie->load_opts.region.w; x++) | ||
781 | { | ||
782 | /* According to libjpeg doc, Photoshop inverse the values of C, M, Y and K, */ | ||
783 | /* that is C is replaces by 255 - C, etc...*/ | ||
784 | /* See the comment below for the computation of RGB values from CMYK ones. */ | ||
785 | *ptr2 = | ||
786 | (0xff000000) | | ||
787 | ((ptr[0] * ptr[3] / 255) << 16) | | ||
788 | ((ptr[1] * ptr[3] / 255) << 8) | | ||
789 | ((ptr[2] * ptr[3] / 255)); | ||
790 | ptr += 4; | ||
791 | ptr2++; | ||
792 | } | ||
793 | } | ||
794 | else | ||
795 | { | ||
796 | for (x = 0; x < ie->load_opts.region.w; x++) | ||
797 | { | ||
798 | /* Conversion from CMYK to RGB is done in 2 steps: */ | ||
799 | /* CMYK => CMY => RGB (see http://www.easyrgb.com/index.php?X=MATH) */ | ||
800 | /* after computation, if C, M, Y and K are between 0 and 1, we have: */ | ||
801 | /* R = (1 - C) * (1 - K) * 255 */ | ||
802 | /* G = (1 - M) * (1 - K) * 255 */ | ||
803 | /* B = (1 - Y) * (1 - K) * 255 */ | ||
804 | /* libjpeg stores CMYK values between 0 and 255, */ | ||
805 | /* so we replace C by C * 255 / 255, etc... and we obtain: */ | ||
806 | /* R = (255 - C) * (255 - K) / 255 */ | ||
807 | /* G = (255 - M) * (255 - K) / 255 */ | ||
808 | /* B = (255 - Y) * (255 - K) / 255 */ | ||
809 | /* with C, M, Y and K between 0 and 255. */ | ||
810 | *ptr2 = | ||
811 | (0xff000000) | | ||
812 | (((255 - ptr[0]) * (255 - ptr[3]) / 255) << 16) | | ||
813 | (((255 - ptr[1]) * (255 - ptr[3]) / 255) << 8) | | ||
814 | (((255 - ptr[2]) * (255 - ptr[3]) / 255)); | ||
815 | ptr += 4; | ||
816 | ptr2++; | ||
817 | } | ||
818 | } | ||
819 | ptr += (4 * (w - (ie->load_opts.region.x + ie->load_opts.region.w))); | ||
820 | } | ||
821 | else | ||
822 | ptr += (4 * w); | ||
823 | } | ||
824 | } | ||
825 | } | ||
826 | } | ||
827 | } | ||
828 | /* We handle then RGB with 3 components */ | ||
829 | else if (cinfo.output_components == 3) | ||
830 | { | ||
831 | /* | ||
832 | double t; | ||
833 | if (region) | ||
834 | { | ||
835 | // debug for now | ||
836 | printf("R| %p %5ix%5i %s: %5i %5i %5ix%5i - ", | ||
837 | ie, | ||
838 | ie->w, ie->h, | ||
839 | ie->file, | ||
840 | ie->load_opts.region.x, | ||
841 | ie->load_opts.region.y, | ||
842 | ie->load_opts.region.w, | ||
843 | ie->load_opts.region.h); | ||
844 | } | ||
845 | t = get_time(); | ||
846 | */ | ||
847 | for (i = 0; (int)i < cinfo.rec_outbuf_height; i++) | ||
848 | line[i] = data + (i * w * 3); | ||
849 | for (l = 0; l < h; l += cinfo.rec_outbuf_height) | ||
850 | { | ||
851 | jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height); | ||
852 | scans = cinfo.rec_outbuf_height; | ||
853 | if ((h - l) < scans) scans = h - l; | ||
854 | ptr = data; | ||
855 | if (!region) | ||
856 | { | ||
857 | for (y = 0; y < scans; y++) | ||
858 | { | ||
859 | for (x = 0; x < w; x++) | ||
860 | { | ||
861 | *ptr2 = ARGB_JOIN(0xff, ptr[0], ptr[1], ptr[2]); | ||
862 | ptr += 3; | ||
863 | ptr2++; | ||
864 | } | ||
865 | } | ||
866 | } | ||
867 | else | ||
868 | { | ||
869 | // if line # > region last line, break | ||
870 | // but not return immediately for rotation job | ||
871 | if (l >= (ie->load_opts.region.y + ie->load_opts.region.h)) | ||
872 | { | ||
873 | line_done = EINA_TRUE; | ||
874 | /* if rotation flag is set , we have to rotate image */ | ||
875 | goto done; | ||
876 | } | ||
877 | // else if scan block intersects region start or later | ||
878 | else if ((l + scans) > | ||
879 | (ie->load_opts.region.y)) | ||
880 | { | ||
881 | for (y = 0; y < scans; y++) | ||
882 | { | ||
883 | if (((y + l) >= ie->load_opts.region.y) && | ||
884 | ((y + l) < (ie->load_opts.region.y + ie->load_opts.region.h))) | ||
885 | { | ||
886 | ptr += (3 * ie->load_opts.region.x); | ||
887 | for (x = 0; x < ie->load_opts.region.w; x++) | ||
888 | { | ||
889 | *ptr2 = ARGB_JOIN(0xff, ptr[0], ptr[1], ptr[2]); | ||
890 | ptr += 3; | ||
891 | ptr2++; | ||
892 | } | ||
893 | ptr += (3 * (w - (ie->load_opts.region.x + ie->load_opts.region.w))); | ||
894 | } | ||
895 | else | ||
896 | ptr += (3 * w); | ||
897 | } | ||
898 | } | ||
899 | } | ||
900 | } | ||
901 | /* | ||
902 | t = get_time() - t; | ||
903 | printf("%3.3f\n", t); | ||
904 | */ | ||
905 | } | ||
906 | /* We finally handle RGB with 1 component */ | ||
907 | else if (cinfo.output_components == 1) | ||
908 | { | ||
909 | for (i = 0; (int)i < cinfo.rec_outbuf_height; i++) | ||
910 | line[i] = data + (i * w); | ||
911 | for (l = 0; l < h; l += cinfo.rec_outbuf_height) | ||
912 | { | ||
913 | jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height); | ||
914 | scans = cinfo.rec_outbuf_height; | ||
915 | if ((h - l) < scans) scans = h - l; | ||
916 | ptr = data; | ||
917 | if (!region) | ||
918 | { | ||
919 | for (y = 0; y < scans; y++) | ||
920 | { | ||
921 | for (x = 0; x < w; x++) | ||
922 | { | ||
923 | *ptr2 = ARGB_JOIN(0xff, ptr[0], ptr[0], ptr[0]); | ||
924 | ptr++; | ||
925 | ptr2++; | ||
926 | } | ||
927 | } | ||
928 | } | ||
929 | else | ||
930 | { | ||
931 | // if line # > region last line, break | ||
932 | if (l >= (ie->load_opts.region.y + ie->load_opts.region.h)) | ||
933 | { | ||
934 | line_done = EINA_TRUE; | ||
935 | /* if rotation flag is set , we have to rotate image */ | ||
936 | goto done; | ||
937 | /*jpeg_destroy_decompress(&cinfo); | ||
938 | _evas_jpeg_membuf_src_term(&cinfo); | ||
939 | *error = EVAS_LOAD_ERROR_NONE; | ||
940 | return EINA_TRUE;*/ | ||
941 | } | ||
942 | // els if scan block intersects region start or later | ||
943 | else if ((l + scans) > | ||
944 | (ie->load_opts.region.y)) | ||
945 | { | ||
946 | for (y = 0; y < scans; y++) | ||
947 | { | ||
948 | if (((y + l) >= ie->load_opts.region.y) && | ||
949 | ((y + l) < (ie->load_opts.region.y + ie->load_opts.region.h))) | ||
950 | { | ||
951 | ptr += ie->load_opts.region.x; | ||
952 | for (x = 0; x < ie->load_opts.region.w; x++) | ||
953 | { | ||
954 | *ptr2 = ARGB_JOIN(0xff, ptr[0], ptr[0], ptr[0]); | ||
955 | ptr++; | ||
956 | ptr2++; | ||
957 | } | ||
958 | ptr += w - (ie->load_opts.region.x + ie->load_opts.region.w); | ||
959 | } | ||
960 | else | ||
961 | ptr += w; | ||
962 | } | ||
963 | } | ||
964 | } | ||
965 | } | ||
966 | } | ||
967 | /* if rotation operation need, rotate it */ | ||
968 | done: | ||
969 | |||
970 | if (ie->flags.rotated) | ||
971 | { | ||
972 | DATA32 *data1, *data2, *to, *from; | ||
973 | int x, y, w, h, hw; | ||
974 | |||
975 | if (change_wh) | ||
976 | { | ||
977 | tmp = ie->w; | ||
978 | ie->w = ie->h; | ||
979 | ie->h = tmp; | ||
980 | } | ||
981 | |||
982 | w = ie->w; | ||
983 | h = ie->h; | ||
984 | hw =w * h; | ||
985 | |||
986 | data1 = evas_cache_image_pixels(ie); | ||
987 | |||
988 | if (degree == 180) | ||
989 | { | ||
990 | DATA32 tmp; | ||
991 | |||
992 | data2 = data1 + (h * w) -1; | ||
993 | for (x = (w * h) / 2; --x >= 0;) | ||
994 | { | ||
995 | tmp = *data1; | ||
996 | *data1 = *data2; | ||
997 | *data2 = tmp; | ||
998 | data1++; | ||
999 | data2--; | ||
1000 | } | ||
1001 | } | ||
1002 | else | ||
1003 | { | ||
1004 | data2 = NULL; | ||
1005 | to = NULL; | ||
1006 | if (ptr_rotate) data2 = ptr_rotate; | ||
1007 | |||
1008 | if (degree == 90) | ||
1009 | { | ||
1010 | to = data1 + w - 1; | ||
1011 | hw = -hw - 1; | ||
1012 | } | ||
1013 | else if (degree == 270) | ||
1014 | { | ||
1015 | to = data1 + hw - w; | ||
1016 | w = -w; | ||
1017 | hw = hw + 1; | ||
1018 | } | ||
1019 | |||
1020 | if (to) | ||
1021 | { | ||
1022 | from = data2; | ||
1023 | for (x = ie->w; --x >= 0;) | ||
1024 | { | ||
1025 | for (y =ie->h; --y >= 0;) | ||
1026 | { | ||
1027 | *to = *from; | ||
1028 | from++; | ||
1029 | to += w; | ||
1030 | } | ||
1031 | to += hw; | ||
1032 | } | ||
1033 | } | ||
1034 | if (ptr_rotate) | ||
1035 | { | ||
1036 | free(ptr_rotate); | ||
1037 | ptr_rotate = NULL; | ||
1038 | } | ||
1039 | } | ||
1040 | if (region) | ||
1041 | { | ||
1042 | ie->load_opts.region.x = load_region_x; | ||
1043 | ie->load_opts.region.y = load_region_y; | ||
1044 | ie->load_opts.region.w = load_region_w; | ||
1045 | ie->load_opts.region.h = load_region_h; | ||
1046 | } | ||
1047 | } | ||
1048 | if (line_done) | ||
1049 | { | ||
1050 | jpeg_destroy_decompress(&cinfo); | ||
1051 | _evas_jpeg_membuf_src_term(&cinfo); | ||
1052 | *error = EVAS_LOAD_ERROR_NONE; | ||
1053 | return EINA_FALSE; | ||
1054 | } | ||
1055 | /* end data decoding */ | ||
1056 | jpeg_finish_decompress(&cinfo); | ||
1057 | jpeg_destroy_decompress(&cinfo); | ||
1058 | _evas_jpeg_membuf_src_term(&cinfo); | ||
1059 | *error = EVAS_LOAD_ERROR_NONE; | ||
1060 | return EINA_TRUE; | ||
1061 | } | ||
1062 | |||
1063 | #if 0 /* not used at the moment */ | ||
1064 | static Eina_Bool | ||
1065 | evas_image_load_file_data_jpeg_alpha_internal(Image_Entry *ie, FILE *f, int *error) | ||
1066 | { | ||
1067 | int w, h; | ||
1068 | struct jpeg_decompress_struct cinfo; | ||
1069 | struct _JPEG_error_mgr jerr; | ||
1070 | DATA8 *ptr, *line[16], *data; | ||
1071 | DATA32 *ptr2; | ||
1072 | int x, y, l, i, scans, prevy; | ||
1073 | |||
1074 | if (!f) | ||
1075 | { | ||
1076 | *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST; | ||
1077 | return EINA_FALSE; | ||
1078 | } | ||
1079 | cinfo.err = jpeg_std_error(&(jerr.pub)); | ||
1080 | jerr.pub.error_exit = _JPEGFatalErrorHandler; | ||
1081 | jerr.pub.emit_message = _JPEGErrorHandler2; | ||
1082 | jerr.pub.output_message = _JPEGErrorHandler; | ||
1083 | if (setjmp(jerr.setjmp_buffer)) | ||
1084 | { | ||
1085 | jpeg_destroy_decompress(&cinfo); | ||
1086 | *error = EVAS_LOAD_ERROR_CORRUPT_FILE; | ||
1087 | return EINA_FALSE; | ||
1088 | } | ||
1089 | jpeg_create_decompress(&cinfo); | ||
1090 | jpeg_stdio_src(&cinfo, f); | ||
1091 | jpeg_read_header(&cinfo, TRUE); | ||
1092 | cinfo.do_fancy_upsampling = FALSE; | ||
1093 | cinfo.do_block_smoothing = FALSE; | ||
1094 | jpeg_start_decompress(&cinfo); | ||
1095 | |||
1096 | /* head decoding */ | ||
1097 | ie->w = w = cinfo.output_width; | ||
1098 | ie->h = h = cinfo.output_height; | ||
1099 | /* end head decoding */ | ||
1100 | /* data decoding */ | ||
1101 | if (cinfo.rec_outbuf_height > 16) | ||
1102 | { | ||
1103 | jpeg_destroy_decompress(&cinfo); | ||
1104 | *error = EVAS_LOAD_ERROR_UNKNOWN_FORMAT; | ||
1105 | return EINA_FALSE;; | ||
1106 | } | ||
1107 | data = alloca(w * 16 * 3); | ||
1108 | if (!ie->flags.loaded) | ||
1109 | { | ||
1110 | jpeg_destroy_decompress(&cinfo); | ||
1111 | *error = EVAS_LOAD_ERROR_NONE; | ||
1112 | return EINA_TRUE; | ||
1113 | } | ||
1114 | ptr2 = evas_cache_image_pixels(ie); | ||
1115 | prevy = 0; | ||
1116 | if (cinfo.output_components == 3) | ||
1117 | { | ||
1118 | for (i = 0; i < cinfo.rec_outbuf_height; i++) | ||
1119 | line[i] = data + (i * w * 3); | ||
1120 | for (l = 0; l < h; l += cinfo.rec_outbuf_height) | ||
1121 | { | ||
1122 | jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height); | ||
1123 | scans = cinfo.rec_outbuf_height; | ||
1124 | if ((h - l) < scans) scans = h - l; | ||
1125 | ptr = data; | ||
1126 | for (y = 0; y < scans; y++) | ||
1127 | { | ||
1128 | for (x = 0; x < w; x++) | ||
1129 | { | ||
1130 | *ptr2 = | ||
1131 | ((*ptr2) & 0x00ffffff) | | ||
1132 | (((ptr[0] + ptr[1] + ptr[2]) / 3) << 24); | ||
1133 | ptr += 3; | ||
1134 | ptr2++; | ||
1135 | } | ||
1136 | } | ||
1137 | } | ||
1138 | } | ||
1139 | else if (cinfo.output_components == 1) | ||
1140 | { | ||
1141 | for (i = 0; i < cinfo.rec_outbuf_height; i++) | ||
1142 | line[i] = data + (i * w); | ||
1143 | for (l = 0; l < h; l += cinfo.rec_outbuf_height) | ||
1144 | { | ||
1145 | jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height); | ||
1146 | scans = cinfo.rec_outbuf_height; | ||
1147 | if ((h - l) < scans) scans = h - l; | ||
1148 | ptr = data; | ||
1149 | for (y = 0; y < scans; y++) | ||
1150 | { | ||
1151 | for (x = 0; x < w; x++) | ||
1152 | { | ||
1153 | *ptr2 = | ||
1154 | ((*ptr2) & 0x00ffffff) | | ||
1155 | ((ptr[0]) << 24); | ||
1156 | ptr++; | ||
1157 | ptr2++; | ||
1158 | } | ||
1159 | } | ||
1160 | } | ||
1161 | } | ||
1162 | /* end data decoding */ | ||
1163 | jpeg_finish_decompress(&cinfo); | ||
1164 | jpeg_destroy_decompress(&cinfo); | ||
1165 | *error = EVAS_LOAD_ERROR_NONE; | ||
1166 | return EINA_TRUE; | ||
1167 | } | ||
1168 | #endif | ||
1169 | |||
1170 | static Eina_Bool | ||
1171 | evas_image_load_file_head_jpeg(Image_Entry *ie, | ||
1172 | const char *file, const char *key __UNUSED__, | ||
1173 | int *error) | ||
1174 | { | ||
1175 | Eina_File *f; | ||
1176 | void *map; | ||
1177 | Eina_Bool val = EINA_FALSE; | ||
1178 | |||
1179 | f = eina_file_open(file, EINA_FALSE); | ||
1180 | if (!f) | ||
1181 | { | ||
1182 | *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST; | ||
1183 | return EINA_FALSE; | ||
1184 | } | ||
1185 | map = eina_file_map_all(f, EINA_FILE_WILLNEED); | ||
1186 | if (!map) | ||
1187 | { | ||
1188 | *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST; | ||
1189 | goto on_error; | ||
1190 | } | ||
1191 | |||
1192 | val = evas_image_load_file_head_jpeg_internal(ie, | ||
1193 | map, eina_file_size_get(f), | ||
1194 | error); | ||
1195 | |||
1196 | eina_file_map_free(f, map); | ||
1197 | |||
1198 | on_error: | ||
1199 | eina_file_close(f); | ||
1200 | return val; | ||
1201 | } | ||
1202 | |||
1203 | static Eina_Bool | ||
1204 | evas_image_load_file_data_jpeg(Image_Entry *ie, | ||
1205 | const char *file, const char *key __UNUSED__, | ||
1206 | int *error) | ||
1207 | { | ||
1208 | Eina_File *f; | ||
1209 | void *map; | ||
1210 | Eina_Bool val = EINA_FALSE; | ||
1211 | |||
1212 | f = eina_file_open(file, EINA_FALSE); | ||
1213 | if (!f) | ||
1214 | { | ||
1215 | *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST; | ||
1216 | return EINA_FALSE; | ||
1217 | } | ||
1218 | map = eina_file_map_all(f, EINA_FILE_WILLNEED); | ||
1219 | if (!map) | ||
1220 | { | ||
1221 | *error = EVAS_LOAD_ERROR_DOES_NOT_EXIST; | ||
1222 | goto on_error; | ||
1223 | } | ||
1224 | |||
1225 | val = evas_image_load_file_data_jpeg_internal(ie, | ||
1226 | map, eina_file_size_get(f), | ||
1227 | error); | ||
1228 | |||
1229 | eina_file_map_free(f, map); | ||
1230 | |||
1231 | on_error: | ||
1232 | eina_file_close(f); | ||
1233 | return val; | ||
1234 | } | ||
1235 | |||
1236 | static int | ||
1237 | module_open(Evas_Module *em) | ||
1238 | { | ||
1239 | if (!em) return 0; | ||
1240 | em->functions = (void *)(&evas_image_load_jpeg_func); | ||
1241 | return 1; | ||
1242 | } | ||
1243 | |||
1244 | static void | ||
1245 | module_close(Evas_Module *em __UNUSED__) | ||
1246 | { | ||
1247 | } | ||
1248 | |||
1249 | static Evas_Module_Api evas_modapi = | ||
1250 | { | ||
1251 | EVAS_MODULE_API_VERSION, | ||
1252 | "jpeg", | ||
1253 | "none", | ||
1254 | { | ||
1255 | module_open, | ||
1256 | module_close | ||
1257 | } | ||
1258 | }; | ||
1259 | |||
1260 | EVAS_MODULE_DEFINE(EVAS_MODULE_TYPE_IMAGE_LOADER, image_loader, jpeg); | ||
1261 | |||
1262 | #ifndef EVAS_STATIC_BUILD_JPEG | ||
1263 | EVAS_EINA_MODULE_DEFINE(image_loader, jpeg); | ||
1264 | #endif | ||
1265 | |||