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Comparing CV/CV.xs (file contents):
Revision 1.6 by root, Wed Nov 12 00:59:01 2003 UTC vs.
Revision 1.28 by root, Mon Aug 22 00:30:58 2005 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 <jpeglib.h>
9#include <glib.h>
10#include <gtk/gtk.h>
5#include <gdk-pixbuf/gdk-pixbuf.h> 11#include <gdk-pixbuf/gdk-pixbuf.h>
6 12
7#include <gperl.h> 13#include <gperl.h>
8#include <gtk2perl.h> 14#include <gtk2perl.h>
9 15
10#define IW 80 16#define IW 80 /* MUST match Schnauer.pm! */
17#define IH 60 /* MUST match Schnauer.pm! */
11 18
12#define RAND (seed = (seed + 7141) * 54773 % 134456) 19#define RAND (seed = (seed + 7141) * 54773 % 134456)
13 20
21#define LINELENGTH 240
22
14#define ELLIPSIS "\xe2\x80\xa6" 23#define ELLIPSIS "\xe2\x80\xa6"
24
25struct jpg_err_mgr
26{
27 struct jpeg_error_mgr err;
28 jmp_buf setjmp_buffer;
29};
30
31static void
32cv_error_exit (j_common_ptr cinfo)
33{
34 longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99);
35}
36
37static void
38cv_error_output (j_common_ptr cinfo)
39{
40 return;
41}
42
43static void
44rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
45 unsigned int *h, unsigned int *s, unsigned int *v)
46{
47 unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b;
48 unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b;
49 unsigned int delta = mx - mn;
50
51 *v = mx;
52
53 *s = mx ? delta * 255 / mx : 0;
54
55 if (delta == 0)
56 *h = 0;
57 else
58 {
59 if (r == mx)
60 *h = ((int)g - (int)b) * 255 / (int)(delta * 3);
61 else if (g == mx)
62 *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52;
63 else if (b == mx)
64 *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103;
65
66 *h &= 255;
67 }
68}
15 69
16static guint32 a85_val; 70static guint32 a85_val;
17static guint a85_cnt; 71static guint a85_cnt;
18static guchar a85_buf[80], *a85_ptr; 72static guchar a85_buf[LINELENGTH], *a85_ptr;
19 73
20static void 74static void
21a85_init (void) 75a85_init (void)
22{ 76{
23 a85_cnt = 4; 77 a85_cnt = 4;
… …
53 } 107 }
54 } 108 }
55 109
56} 110}
57 111
112static void
58a85_finish (PerlIO *fp) 113a85_finish (PerlIO *fp)
59{ 114{
60 while (a85_cnt != 4) 115 while (a85_cnt != 4)
61 a85_push (fp, 0); 116 a85_push (fp, 0);
62 117
… …
67 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 122 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
68} 123}
69 124
70///////////////////////////////////////////////////////////////////////////// 125/////////////////////////////////////////////////////////////////////////////
71 126
72MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow 127MODULE = Gtk2::CV PACKAGE = Gtk2::CV
73 128
74PROTOTYPES: ENABLE 129PROTOTYPES: ENABLE
75 130
131# missing in Gtk2 perl module
132
133gboolean
134gdk_net_wm_supports (GdkAtom property)
135 CODE:
136#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE)
137 RETVAL = gdk_net_wm_supports (property);
138#else
139 RETVAL = 0;
140#endif
141 OUTPUT:
142 RETVAL
143
76GdkPixbuf_noinc * 144GdkPixbuf_noinc *
77transpose (GdkPixbuf *pb) 145dealpha_expose (GdkPixbuf *pb)
78 CODE: 146 CODE:
79{ 147{
80 int w = gdk_pixbuf_get_width (pb); 148 int w = gdk_pixbuf_get_width (pb);
81 int h = gdk_pixbuf_get_height (pb); 149 int h = gdk_pixbuf_get_height (pb);
82 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 150 int bpp = gdk_pixbuf_get_n_channels (pb);
83 int x, y, i; 151 int x, y, i;
84 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 152 guchar *src = gdk_pixbuf_get_pixels (pb), *dst;
85 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 153 int sstr = gdk_pixbuf_get_rowstride (pb), dstr;
86 154
87 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); 155 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
88 156
89 dst = gdk_pixbuf_get_pixels (RETVAL); 157 dst = gdk_pixbuf_get_pixels (RETVAL);
90 dstr = gdk_pixbuf_get_rowstride (RETVAL); 158 dstr = gdk_pixbuf_get_rowstride (RETVAL);
91 159
92 for (y = 0; y < h; y++)
93 for (x = 0; x < w; x++) 160 for (x = 0; x < w; x++)
161 for (y = 0; y < h; y++)
94 for (i = 0; i < bpp; i++) 162 for (i = 0; i < 3; i++)
95 dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; 163 dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i];
96} 164}
97 OUTPUT: 165 OUTPUT:
98 RETVAL 166 RETVAL
99 167
100GdkPixbuf_noinc * 168GdkPixbuf_noinc *
101flop (GdkPixbuf *pb) 169rotate (GdkPixbuf *pb, int angle)
102 CODE: 170 CODE:
103{ 171 RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE
104 int w = gdk_pixbuf_get_width (pb); 172 : angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE
105 int h = gdk_pixbuf_get_height (pb); 173 : angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN
106 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 174 : angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE
107 int x, y, i; 175 : angle);
108 guchar *src = gdk_pixbuf_get_pixels (pb), *dst; 176 OUTPUT:
109 int sstr = gdk_pixbuf_get_rowstride (pb), dstr; 177 RETVAL
110 178
111 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); 179GdkPixbuf_noinc *
180load_jpeg (SV *path, int thumbnail=0)
181 CODE:
182{
183 struct jpeg_decompress_struct cinfo;
184 struct jpg_err_mgr jerr;
185 guchar *data;
186 int rs;
187 FILE *fp;
188 volatile GdkPixbuf *pb = 0;
189 gchar *filename;
112 190
191 RETVAL = 0;
192
193 filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
194 fp = fopen (filename, "rb");
195 g_free (filename);
196
197 if (!fp)
198 XSRETURN_UNDEF;
199
200 cinfo.err = jpeg_std_error (&jerr.err);
201
202 jerr.err.error_exit = cv_error_exit;
203 jerr.err.output_message = cv_error_output;
204
205 if ((rs = setjmp (jerr.setjmp_buffer)))
206 {
207 fclose (fp);
208 jpeg_destroy_decompress (&cinfo);
209
210 if (pb)
211 g_object_unref ((gpointer)pb);
212
213 XSRETURN_UNDEF;
214 }
215
216 jpeg_create_decompress (&cinfo);
217
218 jpeg_stdio_src (&cinfo, fp);
219 jpeg_read_header (&cinfo, TRUE);
220
221 cinfo.dct_method = JDCT_DEFAULT;
222 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
223 cinfo.do_block_smoothing = FALSE;
224 cinfo.out_color_space = JCS_RGB;
225 cinfo.quantize_colors = FALSE;
226
227 cinfo.scale_num = 1;
228 cinfo.scale_denom = 1;
229
230 jpeg_calc_output_dimensions (&cinfo);
231
232 if (thumbnail)
233 {
234 cinfo.dct_method = JDCT_FASTEST;
235 cinfo.do_fancy_upsampling = FALSE;
236
237 while (cinfo.scale_denom < 8
238 && cinfo.output_width >= IW*4
239 && cinfo.output_height >= IH*4)
240 {
241 cinfo.scale_denom <<= 1;
242 jpeg_calc_output_dimensions (&cinfo);
243 }
244 }
245
246 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
247 if (!RETVAL)
248 longjmp (jerr.setjmp_buffer, 2);
249
113 dst = gdk_pixbuf_get_pixels (RETVAL); 250 data = gdk_pixbuf_get_pixels (RETVAL);
114 dstr = gdk_pixbuf_get_rowstride (RETVAL); 251 rs = gdk_pixbuf_get_rowstride (RETVAL);
115 252
116 for (y = 0; y < h; y++) 253 if (cinfo.output_components != 3)
117 for (x = 0; x < w; x++) 254 longjmp (jerr.setjmp_buffer, 3);
118 for (i = 0; i < bpp; i++) 255
119 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; 256 jpeg_start_decompress (&cinfo);
257
258 while (cinfo.output_scanline < cinfo.output_height)
259 {
260 int remaining = cinfo.output_height - cinfo.output_scanline;
261 JSAMPROW rp[4];
262
263 rp [0] = data + cinfo.output_scanline * rs;
264 rp [1] = (guchar *)rp [0] + rs;
265 rp [2] = (guchar *)rp [1] + rs;
266 rp [3] = (guchar *)rp [2] + rs;
267
268 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
269 }
270
271 jpeg_finish_decompress (&cinfo);
272 fclose (fp);
273 jpeg_destroy_decompress (&cinfo);
120} 274}
121 OUTPUT: 275 OUTPUT:
122 RETVAL 276 RETVAL
123 277
124############################################################################# 278#############################################################################
125 279
126MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 280MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
127 281
282SV *
283foldcase (SV *pathsv)
284 PROTOTYPE: $
285 CODE:
286{
287 STRLEN plen;
288 U8 *path = (U8 *)SvPVutf8 (pathsv, plen);
289 U8 *pend = path + plen;
290 U8 dst [plen * 6 * 3], *dstp = dst;
291
292 while (path < pend)
293 {
294 U8 ch = *path;
295
296 if (ch >= 'a' && ch <= 'z')
297 *dstp++ = *path++;
298 else if (ch >= '0' && ch <= '9')
299 {
300 STRLEN el, nl = 0;
301 while (*path >= '0' && *path <= '9' && path < pend)
302 path++, nl++;
303
304 for (el = nl; el < 6; el++)
305 *dstp++ = '0';
306
307 memcpy (dstp, path - nl, nl);
308 dstp += nl;
309 }
310 else
311 {
312 STRLEN cl;
313 to_utf8_fold (path, dstp, &cl);
314 dstp += cl;
315 path += is_utf8_char (path);
316 }
317 }
318
319 RETVAL = newSVpvn ((const char *)dst, dstp - dst);
320}
321 OUTPUT:
322 RETVAL
323
128GdkPixbuf_noinc * 324GdkPixbuf_noinc *
129p7_to_pb (int w, int h, guchar *src) 325p7_to_pb (int w, int h, SV *src_sv)
326 PROTOTYPE: @
130 CODE: 327 CODE:
131{ 328{
132 int x, y; 329 int x, y;
133 guchar *dst, *d; 330 guchar *dst, *d;
134 int dstr; 331 int dstr;
332 guchar *src = (guchar *)SvPVbyte_nolen (src_sv);
135 333
136 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); 334 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
137 dst = gdk_pixbuf_get_pixels (RETVAL); 335 dst = gdk_pixbuf_get_pixels (RETVAL);
138 dstr = gdk_pixbuf_get_rowstride (RETVAL); 336 dstr = gdk_pixbuf_get_rowstride (RETVAL);
139 337
… …
148 } 346 }
149} 347}
150 OUTPUT: 348 OUTPUT:
151 RETVAL 349 RETVAL
152 350
351#############################################################################
352
353MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
354
355void
356dump_ascii85 (PerlIO *fp, GdkPixbuf *pb)
357 CODE:
358{
359 int w = gdk_pixbuf_get_width (pb);
360 int h = gdk_pixbuf_get_height (pb);
361 int x, y, i;
362 guchar *dst;
363 int bpp = gdk_pixbuf_get_n_channels (pb);
364 guchar *src = gdk_pixbuf_get_pixels (pb);
365 int sstr = gdk_pixbuf_get_rowstride (pb);
366
367 a85_init ();
368
369 for (y = 0; y < h; y++)
370 for (x = 0; x < w; x++)
371 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
372 a85_push (fp, src [x * bpp + y * sstr + i]);
373
374 a85_finish (fp);
375}
376
377void
378dump_binary (PerlIO *fp, GdkPixbuf *pb)
379 CODE:
380{
381 int w = gdk_pixbuf_get_width (pb);
382 int h = gdk_pixbuf_get_height (pb);
383 int x, y, i;
384 guchar *dst;
385 int bpp = gdk_pixbuf_get_n_channels (pb);
386 guchar *src = gdk_pixbuf_get_pixels (pb);
387 int sstr = gdk_pixbuf_get_rowstride (pb);
388
389 for (y = 0; y < h; y++)
390 for (x = 0; x < w; x++)
391 for (i = 0; i < (bpp < 3 ? 1 : 3); i++)
392 PerlIO_putc (fp, src [x * bpp + y * sstr + i]);
393}
394
395#############################################################################
396
397MODULE = Gtk2::CV PACKAGE = Gtk2::CV
398
153SV * 399SV *
154pb_to_p7 (GdkPixbuf *pb) 400pb_to_hv84 (GdkPixbuf *pb)
155 CODE: 401 CODE:
156{ 402{
157 int w = gdk_pixbuf_get_width (pb); 403 int w = gdk_pixbuf_get_width (pb);
158 int h = gdk_pixbuf_get_height (pb); 404 int h = gdk_pixbuf_get_height (pb);
159 int x, y; 405 int x, y;
160 guchar *dst; 406 guchar *dst;
161 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; 407 int bpp = gdk_pixbuf_get_n_channels (pb);
162 guchar *src = gdk_pixbuf_get_pixels (pb); 408 guchar *src = gdk_pixbuf_get_pixels (pb);
163 int sstr = gdk_pixbuf_get_rowstride (pb); 409 int sstr = gdk_pixbuf_get_rowstride (pb);
164 int Er[IW], Eg[IW], Eb[IW];
165 int seed = 77;
166 410
167 RETVAL = newSV (w * h); 411 RETVAL = newSV (6 * 8 * 12 / 8);
168 SvPOK_only (RETVAL); 412 SvPOK_only (RETVAL);
169 SvCUR_set (RETVAL, w * h); 413 SvCUR_set (RETVAL, 6 * 8 * 12 / 8);
170 414
171 dst = SvPVX (RETVAL); 415 dst = (guchar *)SvPVX (RETVAL);
172
173 memset (Er, 0, sizeof (int) * IW);
174 memset (Eg, 0, sizeof (int) * IW);
175 memset (Eb, 0, sizeof (int) * IW);
176 416
177 /* some primitive error distribution + random dithering */ 417 /* some primitive error distribution + random dithering */
178 418
179 for (y = 0; y < h; y++) 419 for (y = 0; y < h; y++)
180 { 420 {
181 int er = 0, eg = 0, eb = 0; 421 guchar *p = src + y * sstr;
182 422
183 for (x = 0; x < w; x++) 423 for (x = 0; x < w; x += 2)
184 { 424 {
185 int r, g, b; 425 unsigned int r, g, b, h, s, v, H, V1, V2;
186 guchar *p = src + x * bpp + y * sstr;
187 426
188 r = ((p[0] + er + Er[x]) * 7 + 128) / 255; 427 if (bpp == 3)
189 g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255; 428 r = *p++, g = *p++, b = *p++;
190 b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255; 429 else if (bpp == 1)
430 r = g = b = *p++;
431 else
432 abort ();
191 433
192 r = r > 7 ? 7 : r < 0 ? 0 : r; 434 rgb_to_hsv (r, g, b, &h, &s, &v);
193 g = g > 7 ? 7 : g < 0 ? 0 : g;
194 b = b > 3 ? 3 : b < 0 ? 0 : b;
195 435
196 er += p[0] - (r * 255 + 4) / 7; 436 H = (h * 15 / 255) << 4;
197 eg += p[1] - (g * 255 + 4) / 7; 437 V1 = v;
198 eb += p[2] - (b * 255 + 2) / 3;
199 438
200 Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3; 439 if (bpp == 3)
201 Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3; 440 r = *p++, g = *p++, b = *p++;
202 Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3; 441 else if (bpp == 1)
442 r = g = b = *p++;
443 else
444 abort ();
203 445
204 *dst++ = r << 5 | g << 2 | b; 446 rgb_to_hsv (r, g, b, &h, &s, &v);
447
448 H |= h * 15 / 255;
449 V2 = v;
450
451 *dst++ = H;
452 *dst++ = V1;
453 *dst++ = V2;
205 } 454 }
206 } 455 }
207} 456}
208 OUTPUT: 457 OUTPUT:
209 RETVAL 458 RETVAL
210 459
460SV *
461hv84_to_av (unsigned char *hv84)
462 CODE:
463{
464 int i = 72 / 3;
465 AV *av = newAV ();
466
467 RETVAL = (SV *)newRV_noinc ((SV *)av);
468 while (i--)
469 {
470 int h = *hv84++;
471 int v1 = *hv84++;
472 int v2 = *hv84++;
473
474 av_push (av, newSViv (v1));
475 av_push (av, newSViv ((h >> 4) * 255 / 15));
476 av_push (av, newSViv (v2));
477 av_push (av, newSViv ((h & 15) * 255 / 15));
478 }
479}
480 OUTPUT:
481 RETVAL
482
211############################################################################# 483#############################################################################
212 484
213MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript 485MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
214 486
215void 487SV *
216dump_pb (PerlIO *fp, GdkPixbuf *pb) 488make_histograms (SV *ar)
217 CODE: 489 CODE:
218{ 490{
219 int w = gdk_pixbuf_get_width (pb); 491 int i;
220 int h = gdk_pixbuf_get_height (pb); 492 AV *av, *result;
221 int x, y, i;
222 guchar *dst;
223 int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3;
224 guchar *src = gdk_pixbuf_get_pixels (pb);
225 int sstr = gdk_pixbuf_get_rowstride (pb);
226 493
227 a85_init (); 494 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
495 croak ("Not an array ref as first argument to make_histogram");
228 496
229 for (y = 0; y < h; y++) 497 av = (AV *) SvRV (ar);
230 for (x = 0; x < w; x++) 498 result = newAV ();
499
500 for (i = 0; i <= av_len (av); ++i)
501 {
502 const int HISTSIZE = 64;
503
504 int j;
505 SV *sv = *av_fetch (av, i, 1);
506 STRLEN len;
507 char *buf = SvPVbyte (sv, len);
508
509 int tmphist[HISTSIZE];
510 float *hist;
511
512 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1);
513 SvPOK_on (histsv);
514 SvCUR_set (histsv, HISTSIZE * sizeof (float));
515 hist = (float *)SvPVX (histsv);
516
517 Zero (tmphist, sizeof (tmphist), char);
518
519 for (j = len; j--; )
520 {
521 unsigned int idx
522 = ((*buf & 0xc0) >> 2)
523 | ((*buf & 0x18) >> 1)
524 | (*buf & 0x03);
525
526 ++tmphist[idx];
527 ++buf;
528 }
529
231 for (i = 0; i < 3; i++) 530 for (j = 0; j < HISTSIZE; ++j)
232 a85_push (fp, src [x * bpp + y * sstr + i]); 531 hist[j] = (float)tmphist[j] / (len + 1e-30);
233 532
234 a85_finish (fp); 533 av_push (result, histsv);
235} 534 }
236 535
536 RETVAL = newRV_noinc ((SV *)result);
537}
538 OUTPUT:
539 RETVAL
237 540
238 541
239

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