… | |
… | |
7 | #include <math.h> |
7 | #include <math.h> |
8 | |
8 | |
9 | #include <magic.h> |
9 | #include <magic.h> |
10 | |
10 | |
11 | #include <jpeglib.h> |
11 | #include <jpeglib.h> |
|
|
12 | #include <jerror.h> |
|
|
13 | |
12 | #include <glib.h> |
14 | #include <glib.h> |
13 | #include <gtk/gtk.h> |
15 | #include <gtk/gtk.h> |
|
|
16 | #include <gdk/gdkx.h> |
14 | #include <gdk-pixbuf/gdk-pixbuf.h> |
17 | #include <gdk-pixbuf/gdk-pixbuf.h> |
15 | |
18 | |
16 | #include <gperl.h> |
19 | #include <gperl.h> |
17 | #include <gtk2perl.h> |
20 | #include <gtk2perl.h> |
18 | |
21 | |
19 | #include <assert.h> |
22 | #include <assert.h> |
20 | |
23 | |
|
|
24 | #if WEBP |
|
|
25 | #include <webp/demux.h> |
|
|
26 | #include <webp/decode.h> |
|
|
27 | #endif |
|
|
28 | |
|
|
29 | #include "perlmulticore.h" |
|
|
30 | |
21 | #define IW 80 /* MUST match Schnauzer.pm! */ |
31 | #define IW 80 /* MUST match Schnauzer.pm! */ |
22 | #define IH 60 /* MUST match Schnauzer.pm! */ |
32 | #define IH 60 /* MUST match Schnauzer.pm! */ |
23 | |
33 | |
24 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
34 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
25 | |
35 | |
26 | #define LINELENGTH 240 |
36 | #define LINELENGTH 240 |
27 | |
37 | |
28 | #define ELLIPSIS "\xe2\x80\xa6" |
38 | #define ELLIPSIS "\xe2\x80\xa6" |
29 | |
39 | |
30 | typedef char *octet_string; |
40 | typedef char *octet_string; |
|
|
41 | |
|
|
42 | static magic_t magic_cookie[2]; /* !mime, mime */ |
31 | |
43 | |
32 | struct jpg_err_mgr |
44 | struct jpg_err_mgr |
33 | { |
45 | { |
34 | struct jpeg_error_mgr err; |
46 | struct jpeg_error_mgr err; |
35 | jmp_buf setjmp_buffer; |
47 | jmp_buf setjmp_buffer; |
36 | }; |
48 | }; |
37 | |
49 | |
38 | static void |
50 | static void |
39 | cv_error_exit (j_common_ptr cinfo) |
51 | cv_error_exit (j_common_ptr cinfo) |
40 | { |
52 | { |
|
|
53 | cinfo->err->output_message (cinfo); |
41 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
54 | longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
42 | } |
55 | } |
43 | |
56 | |
44 | static void |
57 | static void |
45 | cv_error_output (j_common_ptr cinfo) |
58 | cv_error_output (j_common_ptr cinfo) |
46 | { |
59 | { |
|
|
60 | char msg[JMSG_LENGTH_MAX]; |
|
|
61 | |
|
|
62 | cinfo->err->format_message (cinfo, msg); |
|
|
63 | |
|
|
64 | fprintf (stderr, "JPEG decoding error: %s\n", msg); |
47 | return; |
65 | return; |
48 | } |
66 | } |
49 | |
67 | |
50 | static void |
68 | static void |
51 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
69 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
… | |
… | |
148 | if (!--a85_cnt) |
166 | if (!--a85_cnt) |
149 | { |
167 | { |
150 | a85_cnt = 4; |
168 | a85_cnt = 4; |
151 | if (a85_val) |
169 | if (a85_val) |
152 | { |
170 | { |
153 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
171 | a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
154 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
172 | a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
155 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
173 | a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
156 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
174 | a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
157 | a85_ptr[0] = (a85_val ) + 33; |
175 | a85_ptr[0] = (a85_val ) + 33; |
158 | |
176 | |
159 | a85_ptr += 5; |
177 | a85_ptr += 5; |
160 | } |
178 | } |
… | |
… | |
183 | |
201 | |
184 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
202 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
185 | } |
203 | } |
186 | |
204 | |
187 | ///////////////////////////////////////////////////////////////////////////// |
205 | ///////////////////////////////////////////////////////////////////////////// |
|
|
206 | // memory source for libjpeg |
|
|
207 | |
|
|
208 | static void cv_ms_init (j_decompress_ptr cinfo) |
|
|
209 | { |
|
|
210 | } |
|
|
211 | |
|
|
212 | static void cv_ms_term (j_decompress_ptr cinfo) |
|
|
213 | { |
|
|
214 | } |
|
|
215 | |
|
|
216 | static boolean cv_ms_fill (j_decompress_ptr cinfo) |
|
|
217 | { |
|
|
218 | // unexpected EOF, warn and generate fake EOI marker |
|
|
219 | |
|
|
220 | WARNMS (cinfo, JWRN_JPEG_EOF); |
|
|
221 | |
|
|
222 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
|
|
223 | |
|
|
224 | static const JOCTET eoi[] = { 0xFF, JPEG_EOI }; |
|
|
225 | |
|
|
226 | src->next_input_byte = eoi; |
|
|
227 | src->bytes_in_buffer = sizeof (eoi); |
|
|
228 | |
|
|
229 | return TRUE; |
|
|
230 | } |
|
|
231 | |
|
|
232 | static void cv_ms_skip (j_decompress_ptr cinfo, long num_bytes) |
|
|
233 | { |
|
|
234 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *)cinfo->src; |
|
|
235 | |
|
|
236 | src->next_input_byte += num_bytes; |
|
|
237 | src->bytes_in_buffer -= num_bytes; |
|
|
238 | } |
|
|
239 | |
|
|
240 | static void cv_jpeg_mem_src (j_decompress_ptr cinfo, void *buf, size_t buflen) |
|
|
241 | { |
|
|
242 | struct jpeg_source_mgr *src; |
|
|
243 | |
|
|
244 | if (!cinfo->src) |
|
|
245 | cinfo->src = (struct jpeg_source_mgr *) |
|
|
246 | (*cinfo->mem->alloc_small) ( |
|
|
247 | (j_common_ptr) cinfo, JPOOL_PERMANENT, sizeof (struct jpeg_source_mgr) |
|
|
248 | ); |
|
|
249 | |
|
|
250 | src = (struct jpeg_source_mgr *)cinfo->src; |
|
|
251 | src->init_source = cv_ms_init; |
|
|
252 | src->fill_input_buffer = cv_ms_fill; |
|
|
253 | src->skip_input_data = cv_ms_skip; |
|
|
254 | src->resync_to_restart = jpeg_resync_to_restart; |
|
|
255 | src->term_source = cv_ms_term; |
|
|
256 | src->next_input_byte = (JOCTET *)buf; |
|
|
257 | src->bytes_in_buffer = buflen; |
|
|
258 | } |
|
|
259 | |
|
|
260 | ///////////////////////////////////////////////////////////////////////////// |
188 | |
261 | |
189 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
262 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
190 | |
263 | |
191 | PROTOTYPES: ENABLE |
264 | PROTOTYPES: ENABLE |
192 | |
265 | |
|
|
266 | # calculate the common prefix length of two strings |
193 | # missing function in perl. really :) |
267 | # missing function in perl. really :) |
194 | int |
268 | int |
195 | common_prefix_length (a, b) |
269 | common_prefix_length (a, b) |
196 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
270 | unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
197 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
271 | unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
… | |
… | |
206 | |
280 | |
207 | OUTPUT: |
281 | OUTPUT: |
208 | RETVAL |
282 | RETVAL |
209 | |
283 | |
210 | const char * |
284 | const char * |
211 | magic (octet_string path) |
285 | magic (SV *path_or_data) |
|
|
286 | ALIAS: |
|
|
287 | magic = 0 |
|
|
288 | magic_mime = 1 |
|
|
289 | magic_buffer = 2 |
|
|
290 | magic_buffer_mime = 3 |
212 | CODE: |
291 | CODE: |
213 | { |
292 | { |
214 | static magic_t cookie; |
293 | STRLEN len; |
|
|
294 | char *data = SvPVbyte (path_or_data, len); |
215 | |
295 | |
216 | if (!cookie) |
296 | if (!magic_cookie[0]) |
217 | { |
297 | { |
218 | cookie = magic_open (MAGIC_SYMLINK); |
298 | magic_cookie[0] = magic_open (MAGIC_SYMLINK); |
219 | |
299 | magic_cookie[1] = magic_open (MAGIC_SYMLINK | MAGIC_MIME_TYPE); |
220 | if (cookie) |
|
|
221 | magic_load (cookie, 0); |
300 | magic_load (magic_cookie[0], 0); |
222 | else |
301 | magic_load (magic_cookie[1], 0); |
223 | XSRETURN_UNDEF; |
|
|
224 | } |
|
|
225 | |
|
|
226 | RETVAL = magic_file (cookie, path); |
|
|
227 | } |
|
|
228 | OUTPUT: |
|
|
229 | RETVAL |
|
|
230 | |
|
|
231 | const char * |
|
|
232 | magic_mime (octet_string path) |
|
|
233 | CODE: |
|
|
234 | { |
|
|
235 | static magic_t cookie; |
|
|
236 | |
|
|
237 | if (!cookie) |
|
|
238 | { |
302 | } |
239 | cookie = magic_open (MAGIC_MIME | MAGIC_SYMLINK); |
|
|
240 | |
303 | |
241 | if (cookie) |
304 | perlinterp_release (); |
242 | magic_load (cookie, 0); |
|
|
243 | else |
|
|
244 | XSRETURN_UNDEF; |
|
|
245 | } |
|
|
246 | |
305 | |
247 | RETVAL = magic_file (cookie, path); |
306 | RETVAL = ix & 2 |
|
|
307 | ? magic_buffer (magic_cookie[ix & 1], data, len) |
|
|
308 | : magic_file (magic_cookie[ix & 1], data); |
|
|
309 | |
|
|
310 | perlinterp_acquire (); |
248 | } |
311 | } |
249 | OUTPUT: |
312 | OUTPUT: |
250 | RETVAL |
313 | RETVAL |
251 | |
314 | |
252 | # missing/broken in Gtk2 perl module |
315 | # missing/broken in Gtk2 perl module |
… | |
… | |
268 | RETVAL |
331 | RETVAL |
269 | |
332 | |
270 | GdkPixbuf_noinc * |
333 | GdkPixbuf_noinc * |
271 | dealpha_expose (GdkPixbuf *pb) |
334 | dealpha_expose (GdkPixbuf *pb) |
272 | CODE: |
335 | CODE: |
|
|
336 | perlinterp_release (); |
273 | { |
337 | { |
274 | int w = gdk_pixbuf_get_width (pb); |
338 | int w = gdk_pixbuf_get_width (pb); |
275 | int h = gdk_pixbuf_get_height (pb); |
339 | int h = gdk_pixbuf_get_height (pb); |
276 | int bpp = gdk_pixbuf_get_n_channels (pb); |
340 | int bpp = gdk_pixbuf_get_n_channels (pb); |
277 | int x, y, i; |
341 | int x, y, i; |
… | |
… | |
286 | for (x = 0; x < w; x++) |
350 | for (x = 0; x < w; x++) |
287 | for (y = 0; y < h; y++) |
351 | for (y = 0; y < h; y++) |
288 | for (i = 0; i < 3; i++) |
352 | for (i = 0; i < 3; i++) |
289 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
353 | dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
290 | } |
354 | } |
|
|
355 | perlinterp_acquire (); |
291 | OUTPUT: |
356 | OUTPUT: |
292 | RETVAL |
357 | RETVAL |
293 | |
358 | |
294 | GdkPixbuf_noinc * |
359 | GdkPixbuf_noinc * |
295 | rotate (GdkPixbuf *pb, int angle) |
360 | rotate (GdkPixbuf *pb, int angle) |
296 | CODE: |
361 | CODE: |
|
|
362 | perlinterp_release (); |
297 | if (angle < 0) |
363 | if (angle < 0) |
298 | angle += 360; |
364 | angle += 360; |
299 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
365 | RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
300 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
366 | : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
301 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
367 | : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
302 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
368 | : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
303 | : angle); |
369 | : angle); |
|
|
370 | perlinterp_acquire (); |
304 | OUTPUT: |
371 | OUTPUT: |
305 | RETVAL |
372 | RETVAL |
306 | |
373 | |
|
|
374 | const char * |
|
|
375 | filetype (SV *image_data) |
|
|
376 | CODE: |
|
|
377 | { |
|
|
378 | STRLEN data_len; |
|
|
379 | U8 *data = SvPVbyte (image_data, data_len); |
|
|
380 | |
|
|
381 | if (data_len >= 20 |
|
|
382 | && data[0] == 0xff |
|
|
383 | && data[1] == 0xd8 |
|
|
384 | && data[2] == 0xff) |
|
|
385 | RETVAL = "jpg"; |
|
|
386 | else if (data_len >= 12 |
|
|
387 | && data[ 0] == (U8)'R' |
|
|
388 | && data[ 1] == (U8)'I' |
|
|
389 | && data[ 2] == (U8)'F' |
|
|
390 | && data[ 3] == (U8)'F' |
|
|
391 | && data[ 8] == (U8)'W' |
|
|
392 | && data[ 9] == (U8)'E' |
|
|
393 | && data[10] == (U8)'B' |
|
|
394 | && data[11] == (U8)'P') |
|
|
395 | RETVAL = "webp"; |
|
|
396 | else if (data_len >= 16 |
|
|
397 | && data[ 0] == 0x89 |
|
|
398 | && data[ 1] == (U8)'P' |
|
|
399 | && data[ 2] == (U8)'N' |
|
|
400 | && data[ 3] == (U8)'G' |
|
|
401 | && data[ 4] == 0x0d |
|
|
402 | && data[ 5] == 0x0a |
|
|
403 | && data[ 6] == 0x1a |
|
|
404 | && data[ 7] == 0x0a) |
|
|
405 | RETVAL = "png"; |
|
|
406 | else |
|
|
407 | RETVAL = "other"; |
|
|
408 | } |
|
|
409 | OUTPUT: |
|
|
410 | RETVAL |
|
|
411 | |
307 | GdkPixbuf_noinc * |
412 | GdkPixbuf_noinc * |
308 | load_jpeg (SV *path, int thumbnail=0) |
413 | decode_webp (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
|
|
414 | CODE: |
|
|
415 | { |
|
|
416 | #if WEBP |
|
|
417 | STRLEN data_size; |
|
|
418 | int alpha; |
|
|
419 | WebPData data; |
|
|
420 | WebPDemuxer *demux; |
|
|
421 | WebPIterator iter; |
|
|
422 | WebPDecoderConfig config; |
|
|
423 | int inw, inh; |
|
|
424 | |
|
|
425 | data.bytes = (uint8_t *)SvPVbyte (image_data, data_size); |
|
|
426 | data.size = data_size; |
|
|
427 | |
|
|
428 | perlinterp_release (); |
|
|
429 | |
|
|
430 | RETVAL = 0; |
|
|
431 | |
|
|
432 | if (!(demux = WebPDemux (&data))) |
|
|
433 | goto err_demux; |
|
|
434 | |
|
|
435 | if (!WebPDemuxGetFrame (demux, 1, &iter)) |
|
|
436 | goto err_iter; |
|
|
437 | |
|
|
438 | if (!WebPInitDecoderConfig (&config)) |
|
|
439 | goto err_iter; |
|
|
440 | |
|
|
441 | config.options.use_threads = 1; |
|
|
442 | |
|
|
443 | if (WebPGetFeatures (iter.fragment.bytes, iter.fragment.size, &config.input) != VP8_STATUS_OK) |
|
|
444 | goto err_iter; |
|
|
445 | |
|
|
446 | inw = config.input.width; |
|
|
447 | inh = config.input.height; |
|
|
448 | |
|
|
449 | if (thumbnail) |
|
|
450 | { |
|
|
451 | if (inw * ih > inh * iw) |
|
|
452 | ih = (iw * inh + inw - 1) / inw; |
|
|
453 | else |
|
|
454 | iw = (ih * inw + inh - 1) / inh; |
|
|
455 | |
|
|
456 | config.options.bypass_filtering = 1; |
|
|
457 | config.options.no_fancy_upsampling = 1; |
|
|
458 | |
|
|
459 | config.options.use_scaling = 1; |
|
|
460 | config.options.scaled_width = iw; |
|
|
461 | config.options.scaled_height = ih; |
|
|
462 | } |
|
|
463 | else |
|
|
464 | { |
|
|
465 | iw = inw; |
|
|
466 | ih = inh; |
|
|
467 | } |
|
|
468 | |
|
|
469 | alpha = !!config.input.has_alpha; |
|
|
470 | |
|
|
471 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, alpha, 8, iw, ih); |
|
|
472 | if (!RETVAL) |
|
|
473 | goto err_iter; |
|
|
474 | |
|
|
475 | config.output.colorspace = alpha ? MODE_RGBA : MODE_RGB; |
|
|
476 | config.output.u.RGBA.rgba = gdk_pixbuf_get_pixels (RETVAL); |
|
|
477 | config.output.u.RGBA.stride = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
478 | config.output.u.RGBA.size = gdk_pixbuf_get_byte_length (RETVAL); |
|
|
479 | config.output.is_external_memory = 1; |
|
|
480 | |
|
|
481 | if (WebPDecode (iter.fragment.bytes, iter.fragment.size, &config) != VP8_STATUS_OK) |
|
|
482 | { |
|
|
483 | g_object_unref (RETVAL); |
|
|
484 | RETVAL = 0; |
|
|
485 | goto err_iter; |
|
|
486 | } |
|
|
487 | |
|
|
488 | err_iter: |
|
|
489 | WebPDemuxReleaseIterator (&iter); |
|
|
490 | err_demux: |
|
|
491 | WebPDemuxDelete (demux); |
|
|
492 | |
|
|
493 | perlinterp_acquire (); |
|
|
494 | #else |
|
|
495 | croak ("load_webp: webp not enabled at compile time"); |
|
|
496 | #endif |
|
|
497 | } |
|
|
498 | OUTPUT: |
|
|
499 | RETVAL |
|
|
500 | |
|
|
501 | GdkPixbuf_noinc * |
|
|
502 | decode_jpeg (SV *image_data, int thumbnail = 0, int iw = 0, int ih = 0) |
309 | CODE: |
503 | CODE: |
310 | { |
504 | { |
311 | struct jpeg_decompress_struct cinfo; |
505 | struct jpeg_decompress_struct cinfo; |
312 | struct jpg_err_mgr jerr; |
506 | struct jpg_err_mgr jerr; |
313 | guchar *data; |
|
|
314 | int rs; |
507 | int rs; |
315 | FILE *fp; |
|
|
316 | volatile GdkPixbuf *pb = 0; |
508 | volatile GdkPixbuf *pb = 0; |
|
|
509 | STRLEN data_len; |
|
|
510 | guchar *data = SvPVbyte (image_data, data_len); |
317 | |
511 | |
318 | RETVAL = 0; |
512 | RETVAL = 0; |
319 | |
513 | |
320 | fp = fopen (SvPVbyte_nolen (path), "rb"); |
514 | perlinterp_release (); |
321 | |
|
|
322 | if (!fp) |
|
|
323 | XSRETURN_UNDEF; |
|
|
324 | |
515 | |
325 | cinfo.err = jpeg_std_error (&jerr.err); |
516 | cinfo.err = jpeg_std_error (&jerr.err); |
326 | |
517 | |
327 | jerr.err.error_exit = cv_error_exit; |
518 | jerr.err.error_exit = cv_error_exit; |
328 | jerr.err.output_message = cv_error_output; |
519 | jerr.err.output_message = cv_error_output; |
329 | |
520 | |
330 | if ((rs = setjmp (jerr.setjmp_buffer))) |
521 | if ((rs = setjmp (jerr.setjmp_buffer))) |
331 | { |
522 | { |
332 | fclose (fp); |
|
|
333 | jpeg_destroy_decompress (&cinfo); |
523 | jpeg_destroy_decompress (&cinfo); |
334 | |
524 | |
335 | if (pb) |
525 | if (pb) |
336 | g_object_unref ((gpointer)pb); |
526 | g_object_unref ((gpointer)pb); |
337 | |
527 | |
|
|
528 | perlinterp_acquire (); |
338 | XSRETURN_UNDEF; |
529 | XSRETURN_UNDEF; |
339 | } |
530 | } |
340 | |
531 | |
|
|
532 | if (!data_len) |
|
|
533 | longjmp (jerr.setjmp_buffer, 4); |
|
|
534 | |
341 | jpeg_create_decompress (&cinfo); |
535 | jpeg_create_decompress (&cinfo); |
|
|
536 | cv_jpeg_mem_src (&cinfo, data, data_len); |
342 | |
537 | |
343 | jpeg_stdio_src (&cinfo, fp); |
|
|
344 | jpeg_read_header (&cinfo, TRUE); |
538 | jpeg_read_header (&cinfo, TRUE); |
345 | |
539 | |
346 | cinfo.dct_method = JDCT_DEFAULT; |
540 | cinfo.dct_method = JDCT_DEFAULT; |
347 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
541 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
348 | cinfo.do_block_smoothing = FALSE; |
542 | cinfo.do_block_smoothing = FALSE; |
… | |
… | |
358 | { |
552 | { |
359 | cinfo.dct_method = JDCT_FASTEST; |
553 | cinfo.dct_method = JDCT_FASTEST; |
360 | cinfo.do_fancy_upsampling = FALSE; |
554 | cinfo.do_fancy_upsampling = FALSE; |
361 | |
555 | |
362 | while (cinfo.scale_denom < 8 |
556 | while (cinfo.scale_denom < 8 |
363 | && cinfo.output_width >= IW*4 |
557 | && cinfo.output_width >= iw*4 |
364 | && cinfo.output_height >= IH*4) |
558 | && cinfo.output_height >= ih*4) |
365 | { |
559 | { |
366 | cinfo.scale_denom <<= 1; |
560 | cinfo.scale_denom <<= 1; |
367 | jpeg_calc_output_dimensions (&cinfo); |
561 | jpeg_calc_output_dimensions (&cinfo); |
368 | } |
562 | } |
369 | } |
563 | } |
370 | |
564 | |
|
|
565 | if (cinfo.output_components != 3) |
|
|
566 | longjmp (jerr.setjmp_buffer, 3); |
|
|
567 | |
|
|
568 | if (cinfo.jpeg_color_space == JCS_YCCK || cinfo.jpeg_color_space == JCS_CMYK) |
|
|
569 | { |
|
|
570 | cinfo.out_color_space = JCS_CMYK; |
|
|
571 | cinfo.output_components = 4; |
|
|
572 | } |
|
|
573 | |
371 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
574 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, cinfo.output_components == 4, 8, cinfo.output_width, cinfo.output_height); |
372 | if (!RETVAL) |
575 | if (!RETVAL) |
373 | longjmp (jerr.setjmp_buffer, 2); |
576 | longjmp (jerr.setjmp_buffer, 2); |
374 | |
577 | |
375 | data = gdk_pixbuf_get_pixels (RETVAL); |
578 | data = gdk_pixbuf_get_pixels (RETVAL); |
376 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
579 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
377 | |
|
|
378 | if (cinfo.output_components != 3) |
|
|
379 | longjmp (jerr.setjmp_buffer, 3); |
|
|
380 | |
580 | |
381 | jpeg_start_decompress (&cinfo); |
581 | jpeg_start_decompress (&cinfo); |
382 | |
582 | |
383 | while (cinfo.output_scanline < cinfo.output_height) |
583 | while (cinfo.output_scanline < cinfo.output_height) |
384 | { |
584 | { |
… | |
… | |
391 | rp [3] = (guchar *)rp [2] + rs; |
591 | rp [3] = (guchar *)rp [2] + rs; |
392 | |
592 | |
393 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
593 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
394 | } |
594 | } |
395 | |
595 | |
|
|
596 | if (cinfo.out_color_space == JCS_CMYK) |
|
|
597 | { |
|
|
598 | guchar *end = data + cinfo.output_height * rs; |
|
|
599 | |
|
|
600 | while (data < end) |
|
|
601 | { |
|
|
602 | U32 c = data [0]; |
|
|
603 | U32 m = data [1]; |
|
|
604 | U32 y = data [2]; |
|
|
605 | U32 k = data [3]; |
|
|
606 | |
|
|
607 | if (0) |
|
|
608 | if (cinfo.Adobe_transform == 2) |
|
|
609 | { |
|
|
610 | c ^= 0xff; |
|
|
611 | m ^= 0xff; |
|
|
612 | y ^= 0xff; |
|
|
613 | k ^= 0xff; |
|
|
614 | } |
|
|
615 | |
|
|
616 | data [0] = (c * k + 0x80) / 0xff; |
|
|
617 | data [1] = (m * k + 0x80) / 0xff; |
|
|
618 | data [2] = (y * k + 0x80) / 0xff; |
|
|
619 | data [3] = 0xff; |
|
|
620 | |
|
|
621 | data += 4; |
|
|
622 | } |
|
|
623 | } |
|
|
624 | |
396 | jpeg_finish_decompress (&cinfo); |
625 | jpeg_finish_decompress (&cinfo); |
397 | fclose (fp); |
|
|
398 | jpeg_destroy_decompress (&cinfo); |
626 | jpeg_destroy_decompress (&cinfo); |
|
|
627 | perlinterp_acquire (); |
399 | } |
628 | } |
400 | OUTPUT: |
629 | OUTPUT: |
401 | RETVAL |
630 | RETVAL |
402 | |
631 | |
403 | void |
632 | void |
404 | compare (GdkPixbuf *a, GdkPixbuf *b) |
633 | compare (GdkPixbuf *a, GdkPixbuf *b) |
405 | PPCODE: |
634 | PPCODE: |
|
|
635 | perlinterp_release (); |
406 | { |
636 | { |
407 | int w = gdk_pixbuf_get_width (a); |
637 | int w = gdk_pixbuf_get_width (a); |
408 | int h = gdk_pixbuf_get_height (a); |
638 | int h = gdk_pixbuf_get_height (a); |
409 | |
639 | |
410 | int sa = gdk_pixbuf_get_rowstride (a); |
640 | int sa = gdk_pixbuf_get_rowstride (a); |
… | |
… | |
437 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
667 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
438 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
668 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
439 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
669 | d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
440 | } |
670 | } |
441 | } |
671 | } |
|
|
672 | |
|
|
673 | perlinterp_acquire (); |
442 | |
674 | |
443 | EXTEND (SP, 2); |
675 | EXTEND (SP, 2); |
444 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
676 | PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
445 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
677 | PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
446 | } |
678 | } |