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Comparing CV/CV.xs (file contents):
Revision 1.4 by root, Sat Nov 8 18:22:21 2003 UTC vs.
Revision 1.32 by root, Wed Feb 15 08:36:55 2006 UTC

1#include "EXTERN.h" 1#include "EXTERN.h"
2#include "perl.h" 2#include "perl.h"
3#include "XSUB.h" 3#include "XSUB.h"
4 4
5#include <string.h>
6#include <setjmp.h>
7
8#include <magic.h>
9
10#include <jpeglib.h>
11#include <glib.h>
12#include <gtk/gtk.h>
5#include <gdk-pixbuf/gdk-pixbuf.h> 13#include <gdk-pixbuf/gdk-pixbuf.h>
6 14
7#include <gperl.h> 15#include <gperl.h>
8#include <gtk2perl.h> 16#include <gtk2perl.h>
9 17
18#define IW 80 /* MUST match Schnauer.pm! */
19#define IH 60 /* MUST match Schnauer.pm! */
20
21#define RAND (seed = (seed + 7141) * 54773 % 134456)
22
23#define LINELENGTH 240
24
25#define ELLIPSIS "\xe2\x80\xa6"
26
27struct jpg_err_mgr
28{
29 struct jpeg_error_mgr err;
30 jmp_buf setjmp_buffer;
31};
32
33static void
34cv_error_exit (j_common_ptr cinfo)
35{
36 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
37}
38
39static void
40cv_error_output (j_common_ptr cinfo)
41{
42 return;
43}
44
45static void
46rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
47 unsigned int *h, unsigned int *s, unsigned int *v)
48{
49 unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b;
50 unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b;
51 unsigned int delta = mx - mn;
52
53 *v = mx;
54
55 *s = mx ? delta * 255 / mx : 0;
56
57 if (delta == 0)
58 *h = 0;
59 else
60 {
61 if (r == mx)
62 *h = ((int)g - (int)b) * 255 / (int)(delta * 3);
63 else if (g == mx)
64 *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52;
65 else if (b == mx)
66 *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103;
67
68 *h &= 255;
69 }
70}
71
10static guint32 a85_val; 72static guint32 a85_val;
11static guint a85_cnt; 73static guint a85_cnt;
12static guchar a85_buf[80], *a85_ptr; 74static guchar a85_buf[LINELENGTH], *a85_ptr;
13 75
14static void 76static void
15a85_init (void) 77a85_init (void)
16{ 78{
17 a85_cnt = 4; 79 a85_cnt = 4;
47 } 109 }
48 } 110 }
49 111
50} 112}
51 113
114static void
52a85_finish (PerlIO *fp) 115a85_finish (PerlIO *fp)
53{ 116{
54 while (a85_cnt != 4) 117 while (a85_cnt != 4)
55 a85_push (fp, 0); 118 a85_push (fp, 0);
56 119
59 *a85_ptr++ = '\n'; 122 *a85_ptr++ = '\n';
60 123
61 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 124 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
62} 125}
63 126
127/////////////////////////////////////////////////////////////////////////////
128
64MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow 129MODULE = Gtk2::CV PACKAGE = Gtk2::CV
65 130
66PROTOTYPES: ENABLE 131PROTOTYPES: ENABLE
67 132
133# missing function in perl. really :)
134int
135common_prefix_length (a, b)
136 unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg);
137 unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg);
138 CODE:
139 RETVAL = 0;
140
141 while (*a == *b && *a)
142 {
143 RETVAL += (*a & 0xc0) != 0x80;
144 a++, b++;
145 }
146
147 OUTPUT:
148 RETVAL
149
150const char *
151magic (const char *path)
152 CODE:
153{
154 static magic_t cookie;
155
156 if (!cookie)
157 {
158 cookie = magic_open (MAGIC_NONE);
159
160 if (cookie)
161 magic_load (cookie, 0);
162 else
163 XSRETURN_UNDEF;
164 }
165
166 RETVAL = magic_file (cookie, path);
167}
168 OUTPUT:
169 RETVAL
170
171const char *
172magic_mime (const char *path)
173 CODE:
174{
175 static magic_t cookie;
176
177 if (!cookie)
178 {
179 cookie = magic_open (MAGIC_MIME);
180
181 if (cookie)
182 magic_load (cookie, 0);
183 else
184 XSRETURN_UNDEF;
185 }
186
187 RETVAL = magic_file (cookie, path);
188}
189 OUTPUT:
190 RETVAL
191
192# missing in Gtk2 perl module
193
194gboolean
195gdk_net_wm_supports (GdkAtom property)
196 CODE:
197#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
198 RETVAL = gdk_net_wm_supports (property);
199#else
200 RETVAL = 0;
201#endif
202 OUTPUT:
203 RETVAL
204
68GdkPixbuf_noinc * 205GdkPixbuf_noinc *
69transpose (GdkPixbuf *pb) 206dealpha_expose (GdkPixbuf *pb)
70 CODE: 207 CODE:
71{ 208{
72 int w = gdk_pixbuf_get_width (pb); 209 int w = gdk_pixbuf_get_width (pb);
73 int h = gdk_pixbuf_get_height (pb); 210 int h = gdk_pixbuf_get_height (pb);
74 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 211 int bpp = gdk_pixbuf_get_n_channels (pb);
75 int x, y, i; 212 int x, y, i;
76 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 213 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
77 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 214 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
78 215
79 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); 216 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
80 217
81 dst = gdk_pixbuf_get_pixels (RETVAL); 218 dst = gdk_pixbuf_get_pixels (RETVAL);
82 dstr = gdk_pixbuf_get_rowstride (RETVAL); 219 dstr = gdk_pixbuf_get_rowstride (RETVAL);
83 220
84 for (y = 0; y < h; y++)
85 for (x = 0; x < w; x++) 221 for (x = 0; x < w; x++)
222 for (y = 0; y < h; y++)
86 for (i = 0; i < bpp; i++) 223 for (i = 0; i < 3; i++)
87 dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; 224 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
88} 225}
89 OUTPUT: 226 OUTPUT:
90 RETVAL 227 RETVAL
91 228
92GdkPixbuf_noinc * 229GdkPixbuf_noinc *
93flop (GdkPixbuf *pb) 230rotate (GdkPixbuf *pb, int angle)
94 CODE: 231 CODE:
95{ 232 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
96 int w = gdk_pixbuf_get_width (pb); 233 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
97 int h = gdk_pixbuf_get_height (pb); 234 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
98 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 235 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
99 int x, y, i; 236 : angle);
100 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 237 OUTPUT:
101 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 238 RETVAL
102 239
103 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); 240GdkPixbuf_noinc *
241load_jpeg (SV *path, int thumbnail=0)
242 CODE:
243{
244 struct jpeg_decompress_struct cinfo;
245 struct jpg_err_mgr jerr;
246 guchar *data;
247 int rs;
248 FILE *fp;
249 volatile GdkPixbuf *pb = 0;
104 250
251 RETVAL = 0;
252
253 fp = fopen (SvPVbyte_nolen (path), "rb");
254
255 if (!fp)
256 XSRETURN_UNDEF;
257
258 cinfo.err = jpeg_std_error (&jerr.err);
259
260 jerr.err.error_exit = cv_error_exit;
261 jerr.err.output_message = cv_error_output;
262
263 if ((rs = setjmp (jerr.setjmp_buffer)))
264 {
265 fclose (fp);
266 jpeg_destroy_decompress (&cinfo);
267
268 if (pb)
269 g_object_unref ((gpointer)pb);
270
271 XSRETURN_UNDEF;
272 }
273
274 jpeg_create_decompress (&cinfo);
275
276 jpeg_stdio_src (&cinfo, fp);
277 jpeg_read_header (&cinfo, TRUE);
278
279 cinfo.dct_method = JDCT_DEFAULT;
280 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
281 cinfo.do_block_smoothing = FALSE;
282 cinfo.out_color_space = JCS_RGB;
283 cinfo.quantize_colors = FALSE;
284
285 cinfo.scale_num = 1;
286 cinfo.scale_denom = 1;
287
288 jpeg_calc_output_dimensions (&cinfo);
289
290 if (thumbnail)
291 {
292 cinfo.dct_method = JDCT_FASTEST;
293 cinfo.do_fancy_upsampling = FALSE;
294
295 while (cinfo.scale_denom < 8
296 && cinfo.output_width >= IW*4
297 && cinfo.output_height >= IH*4)
298 {
299 cinfo.scale_denom <<= 1;
300 jpeg_calc_output_dimensions (&cinfo);
301 }
302 }
303
304 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
305 if (!RETVAL)
306 longjmp (jerr.setjmp_buffer, 2);
307
105 dst = gdk_pixbuf_get_pixels (RETVAL); 308 data = gdk_pixbuf_get_pixels (RETVAL);
106 dstr = gdk_pixbuf_get_rowstride (RETVAL); 309 rs = gdk_pixbuf_get_rowstride (RETVAL);
107 310
108 for (y = 0; y < h; y++) 311 if (cinfo.output_components != 3)
109 for (x = 0; x < w; x++) 312 longjmp (jerr.setjmp_buffer, 3);
110 for (i = 0; i < bpp; i++) 313
111 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; 314 jpeg_start_decompress (&cinfo);
315
316 while (cinfo.output_scanline < cinfo.output_height)
317 {
318 int remaining = cinfo.output_height - cinfo.output_scanline;
319 JSAMPROW rp[4];
320
321 rp [0] = data + cinfo.output_scanline * rs;
322 rp [1] = (guchar *)rp [0] + rs;
323 rp [2] = (guchar *)rp [1] + rs;
324 rp [3] = (guchar *)rp [2] + rs;
325
326 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
327 }
328
329 jpeg_finish_decompress (&cinfo);
330 fclose (fp);
331 jpeg_destroy_decompress (&cinfo);
112} 332}
113 OUTPUT: 333 OUTPUT:
114 RETVAL 334 RETVAL
335
336#############################################################################
115 337
116MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 338MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
117 339
340SV *
341foldcase (SV *pathsv)
342 PROTOTYPE: $
343 CODE:
344{
345 STRLEN plen;
346 U8 *path = (U8 *)SvPVutf8 (pathsv, plen);
347 U8 *pend = path + plen;
348 U8 dst [plen * 6 * 3], *dstp = dst;
349
350 while (path < pend)
351 {
352 U8 ch = *path;
353
354 if (ch >= 'a' && ch <= 'z')
355 *dstp++ = *path++;
356 else if (ch >= '0' && ch <= '9')
357 {
358 STRLEN el, nl = 0;
359 while (*path >= '0' && *path <= '9' && path < pend)
360 path++, nl++;
361
362 for (el = nl; el < 6; el++)
363 *dstp++ = '0';
364
365 memcpy (dstp, path - nl, nl);
366 dstp += nl;
367 }
368 else
369 {
370 STRLEN cl;
371 to_utf8_fold (path, dstp, &cl);
372 dstp += cl;
373 path += is_utf8_char (path);
374 }
375 }
376
377 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
378}
379 OUTPUT:
380 RETVAL
381
118GdkPixbuf_noinc * 382GdkPixbuf_noinc *
119p7_to_pb (int w, int h, guchar *src) 383p7_to_pb (int w, int h, SV *src_sv)
384 PROTOTYPE: @
120 CODE: 385 CODE:
121{ 386{
122 int x, y; 387 int x, y;
123 guchar *dst, *d; 388 guchar *dst, *d;
124 int dstr; 389 int dstr;
390 guchar *src = (guchar *)SvPVbyte_nolen (src_sv);
125 391
126 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); 392 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
127 dst = gdk_pixbuf_get_pixels (RETVAL); 393 dst = gdk_pixbuf_get_pixels (RETVAL);
128 dstr = gdk_pixbuf_get_rowstride (RETVAL); 394 dstr = gdk_pixbuf_get_rowstride (RETVAL);
129 395
138 } 404 }
139} 405}
140 OUTPUT: 406 OUTPUT:
141 RETVAL 407 RETVAL
142 408
409#############################################################################
410
411MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
412
413void
414dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
415 CODE:
416{
417 int w = gdk_pixbuf_get_width (pb);
418 int h = gdk_pixbuf_get_height (pb);
419 int x, y, i;
420 guchar *dst;
421 int bpp = gdk_pixbuf_get_n_channels (pb);
422 guchar *src = gdk_pixbuf_get_pixels (pb);
423 int sstr = gdk_pixbuf_get_rowstride (pb);
424
425 a85_init ();
426
427 for (y = 0; y < h; y++)
428 for (x = 0; x < w; x++)
429 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
430 a85_push (fp, src [x * bpp + y * sstr + i]);
431
432 a85_finish (fp);
433}
434
435void
436dump_binary (PerlIO *fp, GdkPixbuf *pb)
437 CODE:
438{
439 int w = gdk_pixbuf_get_width (pb);
440 int h = gdk_pixbuf_get_height (pb);
441 int x, y, i;
442 guchar *dst;
443 int bpp = gdk_pixbuf_get_n_channels (pb);
444 guchar *src = gdk_pixbuf_get_pixels (pb);
445 int sstr = gdk_pixbuf_get_rowstride (pb);
446
447 for (y = 0; y < h; y++)
448 for (x = 0; x < w; x++)
449 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
450 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
451}
452
453#############################################################################
454
455MODULE = Gtk2::CV PACKAGE = Gtk2::CV
456
143SV * 457SV *
144pb_to_p7 (GdkPixbuf *pb) 458pb_to_hv84 (GdkPixbuf *pb)
145 CODE: 459 CODE:
146{ 460{
147 int w = gdk_pixbuf_get_width (pb); 461 int w = gdk_pixbuf_get_width (pb);
148 int h = gdk_pixbuf_get_height (pb); 462 int h = gdk_pixbuf_get_height (pb);
149 int x, y; 463 int x, y;
150 guchar *dst; 464 guchar *dst;
151 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 465 int bpp = gdk_pixbuf_get_n_channels (pb);
152 guchar *src = gdk_pixbuf_get_pixels (pb); 466 guchar *src = gdk_pixbuf_get_pixels (pb);
153 int sstr = gdk_pixbuf_get_rowstride (pb); 467 int sstr = gdk_pixbuf_get_rowstride (pb);
154 468
155 RETVAL = newSV (w * h); 469 RETVAL = newSV (6 * 8 * 12 / 8);
156 SvPOK_only (RETVAL); 470 SvPOK_only (RETVAL);
157 SvCUR_set (RETVAL, w * h); 471 SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
158 472
159 dst = SvPVX (RETVAL); 473 dst = (guchar *)SvPVX (RETVAL);
474
475 /* some primitive error distribution + random dithering */
160 476
161 for (y = 0; y < h; y++) 477 for (y = 0; y < h; y++)
162 { 478 {
163 /* use a very primitive form of error distribution. */ 479 guchar *p = src + y * sstr;
164 int er = 0, eg = 0, eb = 0;
165 480
166 for (x = 0; x < w; x++) 481 for (x = 0; x < w; x += 2)
167 { 482 {
168 int r, g, b; 483 unsigned int r, g, b, h, s, v, H, V1, V2;
169 guchar *p = src + x * bpp + y * sstr;
170 484
171 r = ((p[0] + er) * 7 + 128) / 255; 485 if (bpp == 3)
172 g = ((p[1] + eg) * 7 + 128) / 255; 486 r = *p++, g = *p++, b = *p++;
173 b = ((p[2] + eb) * 3 + 128) / 255; 487 else if (bpp == 1)
488 r = g = b = *p++;
489 else
490 abort ();
174 491
175 r = r > 7 ? 7 : r < 0 ? 0 : r; 492 rgb_to_hsv (r, g, b, &h, &s, &v);
176 g = g > 7 ? 7 : g < 0 ? 0 : g;
177 b = b > 3 ? 3 : b < 0 ? 0 : b;
178 493
179 er += p[0] - (r * 255 + 4) / 7; 494 H = (h * 15 / 255) << 4;
180 eg += p[1] - (g * 255 + 4) / 7; 495 V1 = v;
181 eb += p[2] - (b * 255 + 2) / 3;
182 496
183 *dst++ = r << 5 | g << 2 | b; 497 if (bpp == 3)
498 r = *p++, g = *p++, b = *p++;
499 else if (bpp == 1)
500 r = g = b = *p++;
501 else
502 abort ();
503
504 rgb_to_hsv (r, g, b, &h, &s, &v);
505
506 H |= h * 15 / 255;
507 V2 = v;
508
509 *dst++ = H;
510 *dst++ = V1;
511 *dst++ = V2;
184 } 512 }
185 } 513 }
186} 514}
187 OUTPUT: 515 OUTPUT:
188 RETVAL 516 RETVAL
189 517
518SV *
519hv84_to_av (unsigned char *hv84)
520 CODE:
521{
522 int i = 72 / 3;
523 AV *av = newAV ();
524
525 RETVAL = (SV *)newRV_noinc ((SV *)av);
526 while (i--)
527 {
528 int h = *hv84++;
529 int v1 = *hv84++;
530 int v2 = *hv84++;
531
532 av_push (av, newSViv (v1));
533 av_push (av, newSViv ((h >> 4) * 255 / 15));
534 av_push (av, newSViv (v2));
535 av_push (av, newSViv ((h & 15) * 255 / 15));
536 }
537}
538 OUTPUT:
539 RETVAL
540
541#############################################################################
542
190MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript 543MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
191 544
192void 545SV *
193dump_pb (PerlIO *fp, GdkPixbuf *pb) 546make_histograms (SV *ar)
194 CODE: 547 CODE:
195{ 548{
196 int w = gdk_pixbuf_get_width (pb); 549 int i;
197 int h = gdk_pixbuf_get_height (pb); 550 AV *av, *result;
198 int x, y, i;
199 guchar *dst;
200 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;
201 guchar *src = gdk_pixbuf_get_pixels (pb);
202 int sstr = gdk_pixbuf_get_rowstride (pb);
203 551
204 a85_init (); 552 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
553 croak ("Not an array ref as first argument to make_histogram");
205 554
206 for (y = 0; y < h; y++) 555 av = (AV *) SvRV (ar);
207 for (x = 0; x < w; x++) 556 result = newAV ();
557
558 for (i = 0; i <= av_len (av); ++i)
559 {
560 const int HISTSIZE = 64;
561
562 int j;
563 SV *sv = *av_fetch (av, i, 1);
564 STRLEN len;
565 char *buf = SvPVbyte (sv, len);
566
567 int tmphist[HISTSIZE];
568 float *hist;
569
570 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1);
571 SvPOK_on (histsv);
572 SvCUR_set (histsv, HISTSIZE * sizeof (float));
573 hist = (float *)SvPVX (histsv);
574
575 Zero (tmphist, sizeof (tmphist), char);
576
577 for (j = len; j--; )
578 {
579 unsigned int idx
580 = ((*buf & 0xc0) >> 2)
581 | ((*buf & 0x18) >> 1)
582 | (*buf & 0x03);
583
584 ++tmphist[idx];
585 ++buf;
586 }
587
208 for (i = 0; i < 3; i++) 588 for (j = 0; j < HISTSIZE; ++j)
209 a85_push (fp, src [x * bpp + y * sstr + i]); 589 hist[j] = (float)tmphist[j] / (len + 1e-30);
210 590
211 a85_finish (fp); 591 av_push (result, histsv);
212} 592 }
213 593
594 RETVAL = newRV_noinc ((SV *)result);
595}
596 OUTPUT:
597 RETVAL
214 598
215 599
216

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