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Comparing CV/CV.xs (file contents):
Revision 1.12 by root, Tue Feb 8 11:00:11 2005 UTC vs.
Revision 1.24 by root, Wed Aug 17 05:25:28 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
14#define LINELENGTH 240 21#define LINELENGTH 240
15 22
16#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}
17 69
18static guint32 a85_val; 70static guint32 a85_val;
19static guint a85_cnt; 71static guint a85_cnt;
20static guchar a85_buf[LINELENGTH], *a85_ptr; 72static guchar a85_buf[LINELENGTH], *a85_ptr;
21 73
… …
68 *a85_ptr++ = '\n'; 120 *a85_ptr++ = '\n';
69 121
70 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); 122 PerlIO_write (fp, a85_buf, a85_ptr - a85_buf);
71} 123}
72 124
73static void
74rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b,
75 unsigned int *h, unsigned int *s, unsigned int *v)
76{
77 unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b;
78 unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b;
79 unsigned int delta = mx - mn;
80
81 *v = mx;
82
83 *s = mx ? delta * 255 / mx : 0;
84
85 if (delta == 0)
86 *h = 0;
87 else
88 {
89 if (r == mx)
90 *h = ((int)g - (int)b) * 255 / (int)(delta * 3);
91 else if (g == mx)
92 *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52;
93 else if (b == mx)
94 *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103;
95
96 *h &= 255;
97 }
98}
99
100///////////////////////////////////////////////////////////////////////////// 125/////////////////////////////////////////////////////////////////////////////
101 126
102MODULE = Gtk2::CV PACKAGE = Gtk2::CV 127MODULE = Gtk2::CV PACKAGE = Gtk2::CV
103 128
104PROTOTYPES: ENABLE 129PROTOTYPES: ENABLE
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
105 143
106GdkPixbuf_noinc * 144GdkPixbuf_noinc *
107transpose (GdkPixbuf *pb) 145transpose (GdkPixbuf *pb)
108 CODE: 146 CODE:
109{ 147{
… …
149 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; 187 dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i];
150} 188}
151 OUTPUT: 189 OUTPUT:
152 RETVAL 190 RETVAL
153 191
192GdkPixbuf_noinc *
193load_jpeg (SV *path, int thumbnail=0)
194 CODE:
195{
196 struct jpeg_decompress_struct cinfo;
197 struct jpg_err_mgr jerr;
198 guchar *data;
199 int rs;
200 FILE *fp;
201 volatile GdkPixbuf *pb = 0;
202 gchar *filename;
203
204 RETVAL = 0;
205
206 filename = g_filename_from_utf8 (SvPVutf8_nolen (path), -1, 0, 0, 0);
207 fp = fopen (filename, "rb");
208 g_free (filename);
209
210 if (!fp)
211 XSRETURN_UNDEF;
212
213 cinfo.err = jpeg_std_error (&jerr.err);
214
215 jerr.err.error_exit = cv_error_exit;
216 jerr.err.output_message = cv_error_output;
217
218 if ((rs = setjmp (jerr.setjmp_buffer)))
219 {
220 fclose (fp);
221 jpeg_destroy_decompress (&cinfo);
222
223 if (pb)
224 g_object_unref ((gpointer)pb);
225
226 XSRETURN_UNDEF;
227 }
228
229 jpeg_create_decompress (&cinfo);
230
231 jpeg_stdio_src (&cinfo, fp);
232 jpeg_read_header (&cinfo, TRUE);
233
234 cinfo.dct_method = JDCT_DEFAULT;
235 cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */
236 cinfo.do_block_smoothing = FALSE;
237 cinfo.out_color_space = JCS_RGB;
238 cinfo.quantize_colors = FALSE;
239
240 cinfo.scale_num = 1;
241 cinfo.scale_denom = 1;
242
243 jpeg_calc_output_dimensions (&cinfo);
244
245 if (thumbnail)
246 {
247 cinfo.dct_method = JDCT_FASTEST;
248 cinfo.do_fancy_upsampling = FALSE;
249
250 while (cinfo.scale_denom < 8
251 && cinfo.output_width >= IW*4
252 && cinfo.output_height >= IH*4)
253 {
254 cinfo.scale_denom <<= 1;
255 jpeg_calc_output_dimensions (&cinfo);
256 }
257 }
258
259 pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height);
260 if (!RETVAL)
261 longjmp (jerr.setjmp_buffer, 2);
262
263 data = gdk_pixbuf_get_pixels (RETVAL);
264 rs = gdk_pixbuf_get_rowstride (RETVAL);
265
266 if (cinfo.output_components != 3)
267 longjmp (jerr.setjmp_buffer, 3);
268
269 jpeg_start_decompress (&cinfo);
270
271 while (cinfo.output_scanline < cinfo.output_height)
272 {
273 int remaining = cinfo.output_height - cinfo.output_scanline;
274 JSAMPROW rp[4];
275
276 rp [0] = data + cinfo.output_scanline * rs;
277 rp [1] = (guchar *)rp [0] + rs;
278 rp [2] = (guchar *)rp [1] + rs;
279 rp [3] = (guchar *)rp [2] + rs;
280
281 jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4);
282 }
283
284 jpeg_finish_decompress (&cinfo);
285 fclose (fp);
286 jpeg_destroy_decompress (&cinfo);
287}
288 OUTPUT:
289 RETVAL
290
154############################################################################# 291#############################################################################
155 292
156MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer 293MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer
157 294
295SV *
296foldcase (SV *pathsv)
297 PROTOTYPE: $
298 CODE:
299{
300 STRLEN plen;
301 U8 *path = SvPVutf8 (pathsv, plen);
302 U8 *pend = path + plen;
303 U8 dst [plen * 6 * 3], *dstp = dst;
304
305 while (path < pend)
306 {
307 U8 ch = *path;
308
309 if (ch >= 'a' && ch <= 'z')
310 *dstp++ = *path++;
311 else if (ch >= '0' && ch <= '9')
312 {
313 STRLEN el, nl = 0;
314 while (*path >= '0' && *path <= '9' && path < pend)
315 path++, nl++;
316
317 for (el = nl; el < 6; el++)
318 *dstp++ = '0';
319
320 memcpy (dstp, path - nl, nl);
321 dstp += nl;
322 }
323 else
324 {
325 STRLEN cl;
326 to_utf8_fold (path, dstp, &cl);
327 dstp += cl;
328 path += is_utf8_char (path);
329 }
330 }
331
332 RETVAL = newSVpvn (dst, dstp - dst);
333}
334 OUTPUT:
335 RETVAL
336
158GdkPixbuf_noinc * 337GdkPixbuf_noinc *
159p7_to_pb (int w, int h, guchar *src) 338p7_to_pb (int w, int h, SV *src_sv)
339 PROTOTYPE: @
160 CODE: 340 CODE:
161{ 341{
162 int x, y; 342 int x, y;
163 guchar *dst, *d; 343 guchar *dst, *d;
164 int dstr; 344 int dstr;
345 guchar *src = SvPVbyte_nolen (src_sv);
165 346
166 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); 347 RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h);
167 dst = gdk_pixbuf_get_pixels (RETVAL); 348 dst = gdk_pixbuf_get_pixels (RETVAL);
168 dstr = gdk_pixbuf_get_rowstride (RETVAL); 349 dstr = gdk_pixbuf_get_rowstride (RETVAL);
169 350
… …
213 for (x = 0; x < w; x++) 394 for (x = 0; x < w; x++)
214 { 395 {
215 int r, g, b; 396 int r, g, b;
216 guchar *p = src + x * bpp + y * sstr; 397 guchar *p = src + x * bpp + y * sstr;
217 398
218 r = ((p[0] + er + Er[x]) * 7 + 128) / 255; 399 r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255;
219 g = ((p[1] + eg + Eg[x]) * 7 + 128) / 255; 400 g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255;
220 b = ((p[2] + eb + Eb[x]) * 3 + 128) / 255; 401 b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255;
221 402
222 r = r > 7 ? 7 : r < 0 ? 0 : r; 403 r = r > 7 ? 7 : r < 0 ? 0 : r;
223 g = g > 7 ? 7 : g < 0 ? 0 : g; 404 g = g > 7 ? 7 : g < 0 ? 0 : g;
224 b = b > 3 ? 3 : b < 0 ? 0 : b; 405 b = b > 3 ? 3 : b < 0 ? 0 : b;
225 406
226 er += p[0] - (r * 255 + 4) / 7; 407 er += p[0] - (r * 255 + 4) / 7;
227 eg += p[1] - (g * 255 + 4) / 7; 408 eg += p[1] - (g * 255 + 4) / 7;
228 eb += p[2] - (b * 255 + 2) / 3; 409 eb += p[2] - (b * 255 + 2) / 3;
229 410
230 Er[x] = er / 2; er -= er / 2 + RAND % 7 - 3; 411 Er[x] = er >> 1; er -= (er + 1) >> 1;
231 Eg[x] = eg / 2; eg -= eg / 2 + RAND % 7 - 3; 412 Eg[x] = eg >> 1; eg -= (eg + 1) >> 1;
232 Eb[x] = eb / 2; eb -= eb / 2 + RAND % 7 - 3; 413 Eb[x] = eb >> 1; eb -= (eb + 1) >> 1;
233 414
234 *dst++ = r << 5 | g << 2 | b; 415 *dst++ = r << 5 | g << 2 | b;
235 } 416 }
236 } 417 }
237} 418}
238 OUTPUT: 419 OUTPUT:
239 RETVAL 420 RETVAL
240
241SV *
242make_histogram (SV *ar)
243 CODE:
244{
245 int i;
246 AV *av, *result;
247
248 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
249 croak ("Not an array ref as first argument to make_histogram");
250
251 av = (AV *) SvRV (ar);
252 result = newAV ();
253
254 for (i = 0; i <= av_len (av); ++i)
255 {
256 int bigst, j;
257 SV *sv = *av_fetch (av, i, 1);
258 STRLEN len;
259 char *buf = SvPVbyte (sv, len);
260
261 int tmphist[256];
262 char *hist;
263
264 SV *histsv = newSV (257);
265 sv_upgrade (histsv, SVt_PV);
266 SvCUR_set (histsv, 256);
267 hist = SvPVX (histsv);
268
269 Zero (tmphist, 256, int);
270
271 while (len--)
272 ++tmphist[(unsigned char)*buf++];
273
274 bigst = 1;
275 for (j = 0; j < 256; ++j)
276 if (tmphist[j] > bigst)
277 bigst = tmphist[j];
278
279 for (j = 0; j < 256; ++j)
280 hist[j] = tmphist[j] * 255 / bigst;
281
282 av_push (result, histsv);
283 }
284
285 RETVAL = newRV_noinc ((SV *)result);
286}
287 OUTPUT:
288 RETVAL
289
290
291 421
292############################################################################# 422#############################################################################
293 423
294MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript 424MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript
295 425
… …
419 } 549 }
420} 550}
421 OUTPUT: 551 OUTPUT:
422 RETVAL 552 RETVAL
423 553
554#############################################################################
424 555
556MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster
425 557
558SV *
559make_histograms (SV *ar)
560 CODE:
561{
562 int i;
563 AV *av, *result;
564
565 if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV)
566 croak ("Not an array ref as first argument to make_histogram");
567
568 av = (AV *) SvRV (ar);
569 result = newAV ();
570
571 for (i = 0; i <= av_len (av); ++i)
572 {
573 const int HISTSIZE = 64;
574
575 int j;
576 SV *sv = *av_fetch (av, i, 1);
577 STRLEN len;
578 char *buf = SvPVbyte (sv, len);
579
580 int tmphist[HISTSIZE];
581 float *hist;
582
583 SV *histsv = newSV (HISTSIZE * sizeof (float) + 1);
584 SvPOK_on (histsv);
585 SvCUR_set (histsv, HISTSIZE * sizeof (float));
586 hist = (float *)SvPVX (histsv);
587
588 Zero (tmphist, sizeof (tmphist), char);
589
590 for (j = len; j--; )
591 {
592 unsigned int idx
593 = ((*buf & 0xc0) >> 2)
594 | ((*buf & 0x18) >> 1)
595 | (*buf & 0x03);
596
597 ++tmphist[idx];
598 ++buf;
599 }
600
601 for (j = 0; j < HISTSIZE; ++j)
602 hist[j] = (float)tmphist[j] / (len + 1e-30);
603
604 av_push (result, histsv);
605 }
606
607 RETVAL = newRV_noinc ((SV *)result);
608}
609 OUTPUT:
610 RETVAL
611
612

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