1 |
#include "EXTERN.h" |
2 |
#include "perl.h" |
3 |
#include "XSUB.h" |
4 |
|
5 |
#include <string.h> |
6 |
#include <setjmp.h> |
7 |
#include <math.h> |
8 |
|
9 |
#include <magic.h> |
10 |
|
11 |
#include <jpeglib.h> |
12 |
#include <glib.h> |
13 |
#include <gtk/gtk.h> |
14 |
#include <gdk-pixbuf/gdk-pixbuf.h> |
15 |
|
16 |
#include <gperl.h> |
17 |
#include <gtk2perl.h> |
18 |
|
19 |
#define IW 80 /* MUST match Schnauzer.pm! */ |
20 |
#define IH 60 /* MUST match Schnauzer.pm! */ |
21 |
|
22 |
#define RAND (seed = (seed + 7141) * 54773 % 134456) |
23 |
|
24 |
#define LINELENGTH 240 |
25 |
|
26 |
#define ELLIPSIS "\xe2\x80\xa6" |
27 |
|
28 |
typedef char *octet_string; |
29 |
|
30 |
struct jpg_err_mgr |
31 |
{ |
32 |
struct jpeg_error_mgr err; |
33 |
jmp_buf setjmp_buffer; |
34 |
}; |
35 |
|
36 |
static void |
37 |
cv_error_exit (j_common_ptr cinfo) |
38 |
{ |
39 |
longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
40 |
} |
41 |
|
42 |
static void |
43 |
cv_error_output (j_common_ptr cinfo) |
44 |
{ |
45 |
return; |
46 |
} |
47 |
|
48 |
static void |
49 |
rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
50 |
unsigned int *h, unsigned int *s, unsigned int *v) |
51 |
{ |
52 |
unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
53 |
unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
54 |
unsigned int delta = mx - mn; |
55 |
|
56 |
*v = mx; |
57 |
|
58 |
*s = mx ? delta * 255 / mx : 0; |
59 |
|
60 |
if (delta == 0) |
61 |
*h = 0; |
62 |
else |
63 |
{ |
64 |
if (r == mx) |
65 |
*h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
66 |
else if (g == mx) |
67 |
*h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
68 |
else if (b == mx) |
69 |
*h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
70 |
|
71 |
*h &= 255; |
72 |
} |
73 |
} |
74 |
|
75 |
struct feature { |
76 |
float v1, v2, v3; // mean, square, cube |
77 |
int n; |
78 |
}; |
79 |
|
80 |
static void |
81 |
feature_init (struct feature *f) |
82 |
{ |
83 |
f->v1 = 0.; |
84 |
f->v2 = 0.; |
85 |
f->v3 = 0.; |
86 |
f->n = 0; |
87 |
} |
88 |
|
89 |
// didn't find an algorithm to neatly do mean, variance and skew in one pass. |
90 |
// elmex ist schuld. |
91 |
static void |
92 |
feature_update_pass_1 (struct feature *f, unsigned int v) |
93 |
{ |
94 |
f->v1 += v; |
95 |
f->n += 1; |
96 |
} |
97 |
|
98 |
static void |
99 |
feature_finish_pass_1 (struct feature *f) |
100 |
{ |
101 |
if (f->n < 1) |
102 |
return; |
103 |
|
104 |
f->v1 /= f->n; |
105 |
} |
106 |
|
107 |
static void |
108 |
feature_update_pass_2 (struct feature *f, unsigned int v) |
109 |
{ |
110 |
float d = v - f->v1; |
111 |
|
112 |
f->v2 += d * d; |
113 |
f->v3 += d * d * d; |
114 |
} |
115 |
|
116 |
static void |
117 |
feature_finish_pass_2 (struct feature *f) |
118 |
{ |
119 |
if (f->n < 1) |
120 |
return; |
121 |
|
122 |
f->v2 /= f->n; |
123 |
f->v3 /= f->n; |
124 |
|
125 |
f->v1 /= 255.; |
126 |
f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
127 |
f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
128 |
} |
129 |
|
130 |
static guint32 a85_val; |
131 |
static guint a85_cnt; |
132 |
static guchar a85_buf[LINELENGTH], *a85_ptr; |
133 |
|
134 |
static void |
135 |
a85_init (void) |
136 |
{ |
137 |
a85_cnt = 4; |
138 |
a85_ptr = a85_buf; |
139 |
} |
140 |
|
141 |
static void |
142 |
a85_push (PerlIO *fp, guchar c) |
143 |
{ |
144 |
a85_val = a85_val << 8 | c; |
145 |
|
146 |
if (!--a85_cnt) |
147 |
{ |
148 |
a85_cnt = 4; |
149 |
if (a85_val) |
150 |
{ |
151 |
a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
152 |
a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
153 |
a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
154 |
a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
155 |
a85_ptr[0] = (a85_val ) + 33; |
156 |
|
157 |
a85_ptr += 5; |
158 |
} |
159 |
else |
160 |
*a85_ptr++ = 'z'; |
161 |
|
162 |
if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
163 |
{ |
164 |
*a85_ptr++ = '\n'; |
165 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
166 |
a85_ptr = a85_buf; |
167 |
} |
168 |
} |
169 |
|
170 |
} |
171 |
|
172 |
static void |
173 |
a85_finish (PerlIO *fp) |
174 |
{ |
175 |
while (a85_cnt != 4) |
176 |
a85_push (fp, 0); |
177 |
|
178 |
*a85_ptr++ = '~'; // probably buggy end-marker |
179 |
*a85_ptr++ = '>'; // probably buggy end-marker |
180 |
*a85_ptr++ = '\n'; |
181 |
|
182 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
183 |
} |
184 |
|
185 |
///////////////////////////////////////////////////////////////////////////// |
186 |
|
187 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
188 |
|
189 |
PROTOTYPES: ENABLE |
190 |
|
191 |
# missing function in perl. really :) |
192 |
int |
193 |
common_prefix_length (a, b) |
194 |
unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
195 |
unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
196 |
CODE: |
197 |
RETVAL = 0; |
198 |
|
199 |
while (*a == *b && *a) |
200 |
{ |
201 |
RETVAL += (*a & 0xc0) != 0x80; |
202 |
a++, b++; |
203 |
} |
204 |
|
205 |
OUTPUT: |
206 |
RETVAL |
207 |
|
208 |
const char * |
209 |
magic (octet_string path) |
210 |
CODE: |
211 |
{ |
212 |
static magic_t cookie; |
213 |
|
214 |
if (!cookie) |
215 |
{ |
216 |
cookie = magic_open (MAGIC_NONE); |
217 |
|
218 |
if (cookie) |
219 |
magic_load (cookie, 0); |
220 |
else |
221 |
XSRETURN_UNDEF; |
222 |
} |
223 |
|
224 |
RETVAL = magic_file (cookie, path); |
225 |
} |
226 |
OUTPUT: |
227 |
RETVAL |
228 |
|
229 |
const char * |
230 |
magic_mime (octet_string path) |
231 |
CODE: |
232 |
{ |
233 |
static magic_t cookie; |
234 |
|
235 |
if (!cookie) |
236 |
{ |
237 |
cookie = magic_open (MAGIC_MIME); |
238 |
|
239 |
if (cookie) |
240 |
magic_load (cookie, 0); |
241 |
else |
242 |
XSRETURN_UNDEF; |
243 |
} |
244 |
|
245 |
RETVAL = magic_file (cookie, path); |
246 |
} |
247 |
OUTPUT: |
248 |
RETVAL |
249 |
|
250 |
# missing/broken in Gtk2 perl module |
251 |
|
252 |
void |
253 |
gdk_window_clear_hints (GdkWindow *window) |
254 |
CODE: |
255 |
gdk_window_set_geometry_hints (window, 0, 0); |
256 |
|
257 |
gboolean |
258 |
gdk_net_wm_supports (GdkAtom property) |
259 |
CODE: |
260 |
#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
261 |
RETVAL = gdk_net_wm_supports (property); |
262 |
#else |
263 |
RETVAL = 0; |
264 |
#endif |
265 |
OUTPUT: |
266 |
RETVAL |
267 |
|
268 |
GdkPixbuf_noinc * |
269 |
dealpha_expose (GdkPixbuf *pb) |
270 |
CODE: |
271 |
{ |
272 |
int w = gdk_pixbuf_get_width (pb); |
273 |
int h = gdk_pixbuf_get_height (pb); |
274 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
275 |
int x, y, i; |
276 |
guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
277 |
int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
278 |
|
279 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
280 |
|
281 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
282 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
283 |
|
284 |
for (x = 0; x < w; x++) |
285 |
for (y = 0; y < h; y++) |
286 |
for (i = 0; i < 3; i++) |
287 |
dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
288 |
} |
289 |
OUTPUT: |
290 |
RETVAL |
291 |
|
292 |
GdkPixbuf_noinc * |
293 |
rotate (GdkPixbuf *pb, int angle) |
294 |
CODE: |
295 |
RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
296 |
: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
297 |
: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
298 |
: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
299 |
: angle); |
300 |
OUTPUT: |
301 |
RETVAL |
302 |
|
303 |
GdkPixbuf_noinc * |
304 |
load_jpeg (SV *path, int thumbnail=0) |
305 |
CODE: |
306 |
{ |
307 |
struct jpeg_decompress_struct cinfo; |
308 |
struct jpg_err_mgr jerr; |
309 |
guchar *data; |
310 |
int rs; |
311 |
FILE *fp; |
312 |
volatile GdkPixbuf *pb = 0; |
313 |
|
314 |
RETVAL = 0; |
315 |
|
316 |
fp = fopen (SvPVbyte_nolen (path), "rb"); |
317 |
|
318 |
if (!fp) |
319 |
XSRETURN_UNDEF; |
320 |
|
321 |
cinfo.err = jpeg_std_error (&jerr.err); |
322 |
|
323 |
jerr.err.error_exit = cv_error_exit; |
324 |
jerr.err.output_message = cv_error_output; |
325 |
|
326 |
if ((rs = setjmp (jerr.setjmp_buffer))) |
327 |
{ |
328 |
fclose (fp); |
329 |
jpeg_destroy_decompress (&cinfo); |
330 |
|
331 |
if (pb) |
332 |
g_object_unref ((gpointer)pb); |
333 |
|
334 |
XSRETURN_UNDEF; |
335 |
} |
336 |
|
337 |
jpeg_create_decompress (&cinfo); |
338 |
|
339 |
jpeg_stdio_src (&cinfo, fp); |
340 |
jpeg_read_header (&cinfo, TRUE); |
341 |
|
342 |
cinfo.dct_method = JDCT_DEFAULT; |
343 |
cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
344 |
cinfo.do_block_smoothing = FALSE; |
345 |
cinfo.out_color_space = JCS_RGB; |
346 |
cinfo.quantize_colors = FALSE; |
347 |
|
348 |
cinfo.scale_num = 1; |
349 |
cinfo.scale_denom = 1; |
350 |
|
351 |
jpeg_calc_output_dimensions (&cinfo); |
352 |
|
353 |
if (thumbnail) |
354 |
{ |
355 |
cinfo.dct_method = JDCT_FASTEST; |
356 |
cinfo.do_fancy_upsampling = FALSE; |
357 |
|
358 |
while (cinfo.scale_denom < 8 |
359 |
&& cinfo.output_width >= IW*4 |
360 |
&& cinfo.output_height >= IH*4) |
361 |
{ |
362 |
cinfo.scale_denom <<= 1; |
363 |
jpeg_calc_output_dimensions (&cinfo); |
364 |
} |
365 |
} |
366 |
|
367 |
pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
368 |
if (!RETVAL) |
369 |
longjmp (jerr.setjmp_buffer, 2); |
370 |
|
371 |
data = gdk_pixbuf_get_pixels (RETVAL); |
372 |
rs = gdk_pixbuf_get_rowstride (RETVAL); |
373 |
|
374 |
if (cinfo.output_components != 3) |
375 |
longjmp (jerr.setjmp_buffer, 3); |
376 |
|
377 |
jpeg_start_decompress (&cinfo); |
378 |
|
379 |
while (cinfo.output_scanline < cinfo.output_height) |
380 |
{ |
381 |
int remaining = cinfo.output_height - cinfo.output_scanline; |
382 |
JSAMPROW rp[4]; |
383 |
|
384 |
rp [0] = data + cinfo.output_scanline * rs; |
385 |
rp [1] = (guchar *)rp [0] + rs; |
386 |
rp [2] = (guchar *)rp [1] + rs; |
387 |
rp [3] = (guchar *)rp [2] + rs; |
388 |
|
389 |
jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
390 |
} |
391 |
|
392 |
jpeg_finish_decompress (&cinfo); |
393 |
fclose (fp); |
394 |
jpeg_destroy_decompress (&cinfo); |
395 |
} |
396 |
OUTPUT: |
397 |
RETVAL |
398 |
|
399 |
void |
400 |
compare (GdkPixbuf *a, GdkPixbuf *b) |
401 |
PPCODE: |
402 |
{ |
403 |
int w = gdk_pixbuf_get_width (a); |
404 |
int h = gdk_pixbuf_get_height (a); |
405 |
int sa = gdk_pixbuf_get_rowstride (a); |
406 |
int sb = gdk_pixbuf_get_rowstride (b); |
407 |
|
408 |
guchar *pa = gdk_pixbuf_get_pixels (a); |
409 |
guchar *pb = gdk_pixbuf_get_pixels (b); |
410 |
|
411 |
int x, y; |
412 |
|
413 |
assert (w == gdk_pixbuf_get_width (b)); |
414 |
assert (h == gdk_pixbuf_get_height (b)); |
415 |
|
416 |
assert (gdk_pixbuf_get_n_channels (a) == 3); |
417 |
assert (gdk_pixbuf_get_n_channels (b) == 3); |
418 |
|
419 |
double diff = 0.; |
420 |
int peak = 0; |
421 |
|
422 |
if (w && h) |
423 |
for (y = 0; y < h; y++) |
424 |
{ |
425 |
guchar *pa_ = pa + y * sa; |
426 |
guchar *pb_ = pb + y * sb; |
427 |
|
428 |
for (x = 0; x < w; x++) |
429 |
{ |
430 |
int d; |
431 |
|
432 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
433 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
434 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
435 |
} |
436 |
} |
437 |
|
438 |
EXTEND (SP, 2); |
439 |
PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
440 |
PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
441 |
} |
442 |
|
443 |
############################################################################# |
444 |
|
445 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
446 |
|
447 |
# currently only works for filenames (octet strings) |
448 |
|
449 |
SV * |
450 |
foldcase (SV *pathsv) |
451 |
PROTOTYPE: $ |
452 |
CODE: |
453 |
{ |
454 |
STRLEN plen; |
455 |
U8 *path = (U8 *)SvPV (pathsv, plen); |
456 |
U8 *pend = path + plen; |
457 |
U8 dst [plen * 6 * 3], *dstp = dst; |
458 |
|
459 |
while (path < pend) |
460 |
{ |
461 |
U8 ch = *path; |
462 |
|
463 |
if (ch >= 'a' && ch <= 'z') |
464 |
*dstp++ = *path++; |
465 |
else if (ch >= 'A' && ch <= 'Z') |
466 |
*dstp++ = *path++ + ('a' - 'A'); |
467 |
else if (ch >= '0' && ch <= '9') |
468 |
{ |
469 |
STRLEN el, nl = 0; |
470 |
while (*path >= '0' && *path <= '9' && path < pend) |
471 |
path++, nl++; |
472 |
|
473 |
for (el = nl; el < 6; el++) |
474 |
*dstp++ = '0'; |
475 |
|
476 |
memcpy (dstp, path - nl, nl); |
477 |
dstp += nl; |
478 |
} |
479 |
else |
480 |
*dstp++ = *path++; |
481 |
#if 0 |
482 |
else |
483 |
{ |
484 |
STRLEN cl; |
485 |
to_utf8_fold (path, dstp, &cl); |
486 |
dstp += cl; |
487 |
path += is_utf8_char (path); |
488 |
} |
489 |
#endif |
490 |
} |
491 |
|
492 |
RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
493 |
} |
494 |
OUTPUT: |
495 |
RETVAL |
496 |
|
497 |
GdkPixbuf_noinc * |
498 |
p7_to_pb (int w, int h, SV *src_sv) |
499 |
PROTOTYPE: @ |
500 |
CODE: |
501 |
{ |
502 |
int x, y; |
503 |
guchar *dst, *d; |
504 |
int dstr; |
505 |
guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
506 |
|
507 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
508 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
509 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
510 |
|
511 |
for (y = 0; y < h; y++) |
512 |
for (d = dst + y * dstr, x = 0; x < w; x++) |
513 |
{ |
514 |
*d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
515 |
*d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
516 |
*d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
517 |
|
518 |
src++; |
519 |
} |
520 |
} |
521 |
OUTPUT: |
522 |
RETVAL |
523 |
|
524 |
############################################################################# |
525 |
|
526 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
527 |
|
528 |
void |
529 |
dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
530 |
CODE: |
531 |
{ |
532 |
int w = gdk_pixbuf_get_width (pb); |
533 |
int h = gdk_pixbuf_get_height (pb); |
534 |
int x, y, i; |
535 |
guchar *dst; |
536 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
537 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
538 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
539 |
|
540 |
a85_init (); |
541 |
|
542 |
for (y = 0; y < h; y++) |
543 |
for (x = 0; x < w; x++) |
544 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
545 |
a85_push (fp, src [x * bpp + y * sstr + i]); |
546 |
|
547 |
a85_finish (fp); |
548 |
} |
549 |
|
550 |
void |
551 |
dump_binary (PerlIO *fp, GdkPixbuf *pb) |
552 |
CODE: |
553 |
{ |
554 |
int w = gdk_pixbuf_get_width (pb); |
555 |
int h = gdk_pixbuf_get_height (pb); |
556 |
int x, y, i; |
557 |
guchar *dst; |
558 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
559 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
560 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
561 |
|
562 |
for (y = 0; y < h; y++) |
563 |
for (x = 0; x < w; x++) |
564 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
565 |
PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
566 |
} |
567 |
|
568 |
############################################################################# |
569 |
|
570 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
571 |
|
572 |
SV * |
573 |
pb_to_hv84 (GdkPixbuf *pb) |
574 |
CODE: |
575 |
{ |
576 |
int w = gdk_pixbuf_get_width (pb); |
577 |
int h = gdk_pixbuf_get_height (pb); |
578 |
int x, y; |
579 |
guchar *dst; |
580 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
581 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
582 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
583 |
|
584 |
RETVAL = newSV (6 * 8 * 12 / 8); |
585 |
SvPOK_only (RETVAL); |
586 |
SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
587 |
|
588 |
dst = (guchar *)SvPVX (RETVAL); |
589 |
|
590 |
/* some primitive error distribution + random dithering */ |
591 |
|
592 |
for (y = 0; y < h; y++) |
593 |
{ |
594 |
guchar *p = src + y * sstr; |
595 |
|
596 |
for (x = 0; x < w; x += 2) |
597 |
{ |
598 |
unsigned int r, g, b, h, s, v, H, V1, V2; |
599 |
|
600 |
if (bpp == 3) |
601 |
r = *p++, g = *p++, b = *p++; |
602 |
else if (bpp == 1) |
603 |
r = g = b = *p++; |
604 |
else |
605 |
abort (); |
606 |
|
607 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
608 |
|
609 |
H = (h * 15 / 255) << 4; |
610 |
V1 = v; |
611 |
|
612 |
if (bpp == 3) |
613 |
r = *p++, g = *p++, b = *p++; |
614 |
else if (bpp == 1) |
615 |
r = g = b = *p++; |
616 |
else |
617 |
abort (); |
618 |
|
619 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
620 |
|
621 |
H |= h * 15 / 255; |
622 |
V2 = v; |
623 |
|
624 |
*dst++ = H; |
625 |
*dst++ = V1; |
626 |
*dst++ = V2; |
627 |
} |
628 |
} |
629 |
} |
630 |
OUTPUT: |
631 |
RETVAL |
632 |
|
633 |
SV * |
634 |
hv84_to_av (unsigned char *hv84) |
635 |
CODE: |
636 |
{ |
637 |
int i = 72 / 3; |
638 |
AV *av = newAV (); |
639 |
|
640 |
RETVAL = (SV *)newRV_noinc ((SV *)av); |
641 |
while (i--) |
642 |
{ |
643 |
int h = *hv84++; |
644 |
int v1 = *hv84++; |
645 |
int v2 = *hv84++; |
646 |
|
647 |
av_push (av, newSViv (v1)); |
648 |
av_push (av, newSViv ((h >> 4) * 255 / 15)); |
649 |
av_push (av, newSViv (v2)); |
650 |
av_push (av, newSViv ((h & 15) * 255 / 15)); |
651 |
} |
652 |
} |
653 |
OUTPUT: |
654 |
RETVAL |
655 |
|
656 |
############################################################################# |
657 |
|
658 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
659 |
|
660 |
SV * |
661 |
extract_features (SV *ar) |
662 |
CODE: |
663 |
{ |
664 |
int i; |
665 |
AV *av, *result; |
666 |
|
667 |
if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
668 |
croak ("Not an array ref as first argument to extract_features"); |
669 |
|
670 |
av = (AV *) SvRV (ar); |
671 |
result = newAV (); |
672 |
|
673 |
for (i = 0; i <= av_len (av); ++i) |
674 |
{ |
675 |
SV *sv = *av_fetch (av, i, 1); |
676 |
SV *histsv = newSV (9 * sizeof (float) + 1); |
677 |
|
678 |
SvPOK_on (histsv); |
679 |
SvCUR_set (histsv, 9 * sizeof (float)); |
680 |
float *hist = (float *)SvPVX (histsv); |
681 |
|
682 |
struct feature f_h, f_s, f_v; |
683 |
feature_init (&f_h); |
684 |
feature_init (&f_s); |
685 |
feature_init (&f_v); |
686 |
|
687 |
{ |
688 |
STRLEN len; |
689 |
unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
690 |
while (len >= 3) |
691 |
{ |
692 |
unsigned int r, g, b, h, s, v; |
693 |
r = *buf++; g = *buf++; b = *buf++; |
694 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
695 |
|
696 |
feature_update_pass_1 (&f_h, h); |
697 |
feature_update_pass_1 (&f_s, s); |
698 |
feature_update_pass_1 (&f_v, v); |
699 |
|
700 |
len -= 3; |
701 |
} |
702 |
|
703 |
feature_finish_pass_1 (&f_h); |
704 |
feature_finish_pass_1 (&f_s); |
705 |
feature_finish_pass_1 (&f_v); |
706 |
} |
707 |
|
708 |
{ |
709 |
STRLEN len; |
710 |
unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
711 |
while (len >= 3) |
712 |
{ |
713 |
unsigned int r, g, b, h, s, v; |
714 |
r = *buf++; g = *buf++; b = *buf++; |
715 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
716 |
|
717 |
feature_update_pass_2 (&f_h, h); |
718 |
feature_update_pass_2 (&f_s, s); |
719 |
feature_update_pass_2 (&f_v, v); |
720 |
|
721 |
len -= 3; |
722 |
} |
723 |
|
724 |
feature_finish_pass_2 (&f_h); |
725 |
feature_finish_pass_2 (&f_s); |
726 |
feature_finish_pass_2 (&f_v); |
727 |
} |
728 |
|
729 |
hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
730 |
hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
731 |
hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
732 |
|
733 |
av_push (result, histsv); |
734 |
} |
735 |
|
736 |
RETVAL = newRV_noinc ((SV *)result); |
737 |
} |
738 |
OUTPUT: |
739 |
RETVAL |
740 |
|