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 |
#include <assert.h> |
20 |
|
21 |
#define IW 80 /* MUST match Schnauzer.pm! */ |
22 |
#define IH 60 /* MUST match Schnauzer.pm! */ |
23 |
|
24 |
#define RAND (seed = (seed + 7141) * 54773 % 134456) |
25 |
|
26 |
#define LINELENGTH 240 |
27 |
|
28 |
#define ELLIPSIS "\xe2\x80\xa6" |
29 |
|
30 |
typedef char *octet_string; |
31 |
|
32 |
struct jpg_err_mgr |
33 |
{ |
34 |
struct jpeg_error_mgr err; |
35 |
jmp_buf setjmp_buffer; |
36 |
}; |
37 |
|
38 |
static void |
39 |
cv_error_exit (j_common_ptr cinfo) |
40 |
{ |
41 |
longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
42 |
} |
43 |
|
44 |
static void |
45 |
cv_error_output (j_common_ptr cinfo) |
46 |
{ |
47 |
return; |
48 |
} |
49 |
|
50 |
static void |
51 |
rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
52 |
unsigned int *h, unsigned int *s, unsigned int *v) |
53 |
{ |
54 |
unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
55 |
unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
56 |
unsigned int delta = mx - mn; |
57 |
|
58 |
*v = mx; |
59 |
|
60 |
*s = mx ? delta * 255 / mx : 0; |
61 |
|
62 |
if (delta == 0) |
63 |
*h = 0; |
64 |
else |
65 |
{ |
66 |
if (r == mx) |
67 |
*h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
68 |
else if (g == mx) |
69 |
*h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
70 |
else if (b == mx) |
71 |
*h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
72 |
|
73 |
*h &= 255; |
74 |
} |
75 |
} |
76 |
|
77 |
struct feature { |
78 |
float v1, v2, v3; // mean, square, cube |
79 |
int n; |
80 |
}; |
81 |
|
82 |
static void |
83 |
feature_init (struct feature *f) |
84 |
{ |
85 |
f->v1 = 0.; |
86 |
f->v2 = 0.; |
87 |
f->v3 = 0.; |
88 |
f->n = 0; |
89 |
} |
90 |
|
91 |
// didn't find an algorithm to neatly do mean, variance and skew in one pass. |
92 |
// elmex ist schuld. |
93 |
static void |
94 |
feature_update_pass_1 (struct feature *f, unsigned int v) |
95 |
{ |
96 |
f->v1 += v; |
97 |
f->n += 1; |
98 |
} |
99 |
|
100 |
static void |
101 |
feature_finish_pass_1 (struct feature *f) |
102 |
{ |
103 |
if (f->n < 1) |
104 |
return; |
105 |
|
106 |
f->v1 /= f->n; |
107 |
} |
108 |
|
109 |
static void |
110 |
feature_update_pass_2 (struct feature *f, unsigned int v) |
111 |
{ |
112 |
float d = v - f->v1; |
113 |
|
114 |
f->v2 += d * d; |
115 |
f->v3 += d * d * d; |
116 |
} |
117 |
|
118 |
static void |
119 |
feature_finish_pass_2 (struct feature *f) |
120 |
{ |
121 |
if (f->n < 1) |
122 |
return; |
123 |
|
124 |
f->v2 /= f->n; |
125 |
f->v3 /= f->n; |
126 |
|
127 |
f->v1 /= 255.; |
128 |
f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
129 |
f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
130 |
} |
131 |
|
132 |
static guint32 a85_val; |
133 |
static guint a85_cnt; |
134 |
static guchar a85_buf[LINELENGTH], *a85_ptr; |
135 |
|
136 |
static void |
137 |
a85_init (void) |
138 |
{ |
139 |
a85_cnt = 4; |
140 |
a85_ptr = a85_buf; |
141 |
} |
142 |
|
143 |
static void |
144 |
a85_push (PerlIO *fp, guchar c) |
145 |
{ |
146 |
a85_val = a85_val << 8 | c; |
147 |
|
148 |
if (!--a85_cnt) |
149 |
{ |
150 |
a85_cnt = 4; |
151 |
if (a85_val) |
152 |
{ |
153 |
a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
154 |
a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
155 |
a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
156 |
a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
157 |
a85_ptr[0] = (a85_val ) + 33; |
158 |
|
159 |
a85_ptr += 5; |
160 |
} |
161 |
else |
162 |
*a85_ptr++ = 'z'; |
163 |
|
164 |
if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
165 |
{ |
166 |
*a85_ptr++ = '\n'; |
167 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
168 |
a85_ptr = a85_buf; |
169 |
} |
170 |
} |
171 |
|
172 |
} |
173 |
|
174 |
static void |
175 |
a85_finish (PerlIO *fp) |
176 |
{ |
177 |
while (a85_cnt != 4) |
178 |
a85_push (fp, 0); |
179 |
|
180 |
*a85_ptr++ = '~'; // probably buggy end-marker |
181 |
*a85_ptr++ = '>'; // probably buggy end-marker |
182 |
*a85_ptr++ = '\n'; |
183 |
|
184 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
185 |
} |
186 |
|
187 |
///////////////////////////////////////////////////////////////////////////// |
188 |
|
189 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
190 |
|
191 |
PROTOTYPES: ENABLE |
192 |
|
193 |
# missing function in perl. really :) |
194 |
int |
195 |
common_prefix_length (a, b) |
196 |
unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
197 |
unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
198 |
CODE: |
199 |
RETVAL = 0; |
200 |
|
201 |
while (*a == *b && *a) |
202 |
{ |
203 |
RETVAL += (*a & 0xc0) != 0x80; |
204 |
a++, b++; |
205 |
} |
206 |
|
207 |
OUTPUT: |
208 |
RETVAL |
209 |
|
210 |
const char * |
211 |
magic (octet_string path) |
212 |
CODE: |
213 |
{ |
214 |
static magic_t cookie; |
215 |
|
216 |
if (!cookie) |
217 |
{ |
218 |
cookie = magic_open (MAGIC_NONE); |
219 |
|
220 |
if (cookie) |
221 |
magic_load (cookie, 0); |
222 |
else |
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 |
{ |
239 |
cookie = magic_open (MAGIC_MIME); |
240 |
|
241 |
if (cookie) |
242 |
magic_load (cookie, 0); |
243 |
else |
244 |
XSRETURN_UNDEF; |
245 |
} |
246 |
|
247 |
RETVAL = magic_file (cookie, path); |
248 |
} |
249 |
OUTPUT: |
250 |
RETVAL |
251 |
|
252 |
# missing/broken in Gtk2 perl module |
253 |
|
254 |
void |
255 |
gdk_window_clear_hints (GdkWindow *window) |
256 |
CODE: |
257 |
gdk_window_set_geometry_hints (window, 0, 0); |
258 |
|
259 |
gboolean |
260 |
gdk_net_wm_supports (GdkAtom property) |
261 |
CODE: |
262 |
#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
263 |
RETVAL = gdk_net_wm_supports (property); |
264 |
#else |
265 |
RETVAL = 0; |
266 |
#endif |
267 |
OUTPUT: |
268 |
RETVAL |
269 |
|
270 |
GdkPixbuf_noinc * |
271 |
dealpha_expose (GdkPixbuf *pb) |
272 |
CODE: |
273 |
{ |
274 |
int w = gdk_pixbuf_get_width (pb); |
275 |
int h = gdk_pixbuf_get_height (pb); |
276 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
277 |
int x, y, i; |
278 |
guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
279 |
int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
280 |
|
281 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
282 |
|
283 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
284 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
285 |
|
286 |
for (x = 0; x < w; x++) |
287 |
for (y = 0; y < h; y++) |
288 |
for (i = 0; i < 3; i++) |
289 |
dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
290 |
} |
291 |
OUTPUT: |
292 |
RETVAL |
293 |
|
294 |
GdkPixbuf_noinc * |
295 |
rotate (GdkPixbuf *pb, int angle) |
296 |
CODE: |
297 |
RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
298 |
: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
299 |
: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
300 |
: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
301 |
: angle); |
302 |
OUTPUT: |
303 |
RETVAL |
304 |
|
305 |
GdkPixbuf_noinc * |
306 |
load_jpeg (SV *path, int thumbnail=0) |
307 |
CODE: |
308 |
{ |
309 |
struct jpeg_decompress_struct cinfo; |
310 |
struct jpg_err_mgr jerr; |
311 |
guchar *data; |
312 |
int rs; |
313 |
FILE *fp; |
314 |
volatile GdkPixbuf *pb = 0; |
315 |
|
316 |
RETVAL = 0; |
317 |
|
318 |
fp = fopen (SvPVbyte_nolen (path), "rb"); |
319 |
|
320 |
if (!fp) |
321 |
XSRETURN_UNDEF; |
322 |
|
323 |
cinfo.err = jpeg_std_error (&jerr.err); |
324 |
|
325 |
jerr.err.error_exit = cv_error_exit; |
326 |
jerr.err.output_message = cv_error_output; |
327 |
|
328 |
if ((rs = setjmp (jerr.setjmp_buffer))) |
329 |
{ |
330 |
fclose (fp); |
331 |
jpeg_destroy_decompress (&cinfo); |
332 |
|
333 |
if (pb) |
334 |
g_object_unref ((gpointer)pb); |
335 |
|
336 |
XSRETURN_UNDEF; |
337 |
} |
338 |
|
339 |
jpeg_create_decompress (&cinfo); |
340 |
|
341 |
jpeg_stdio_src (&cinfo, fp); |
342 |
jpeg_read_header (&cinfo, TRUE); |
343 |
|
344 |
cinfo.dct_method = JDCT_DEFAULT; |
345 |
cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
346 |
cinfo.do_block_smoothing = FALSE; |
347 |
cinfo.out_color_space = JCS_RGB; |
348 |
cinfo.quantize_colors = FALSE; |
349 |
|
350 |
cinfo.scale_num = 1; |
351 |
cinfo.scale_denom = 1; |
352 |
|
353 |
jpeg_calc_output_dimensions (&cinfo); |
354 |
|
355 |
if (thumbnail) |
356 |
{ |
357 |
cinfo.dct_method = JDCT_FASTEST; |
358 |
cinfo.do_fancy_upsampling = FALSE; |
359 |
|
360 |
while (cinfo.scale_denom < 8 |
361 |
&& cinfo.output_width >= IW*4 |
362 |
&& cinfo.output_height >= IH*4) |
363 |
{ |
364 |
cinfo.scale_denom <<= 1; |
365 |
jpeg_calc_output_dimensions (&cinfo); |
366 |
} |
367 |
} |
368 |
|
369 |
pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
370 |
if (!RETVAL) |
371 |
longjmp (jerr.setjmp_buffer, 2); |
372 |
|
373 |
data = gdk_pixbuf_get_pixels (RETVAL); |
374 |
rs = gdk_pixbuf_get_rowstride (RETVAL); |
375 |
|
376 |
if (cinfo.output_components != 3) |
377 |
longjmp (jerr.setjmp_buffer, 3); |
378 |
|
379 |
jpeg_start_decompress (&cinfo); |
380 |
|
381 |
while (cinfo.output_scanline < cinfo.output_height) |
382 |
{ |
383 |
int remaining = cinfo.output_height - cinfo.output_scanline; |
384 |
JSAMPROW rp[4]; |
385 |
|
386 |
rp [0] = data + cinfo.output_scanline * rs; |
387 |
rp [1] = (guchar *)rp [0] + rs; |
388 |
rp [2] = (guchar *)rp [1] + rs; |
389 |
rp [3] = (guchar *)rp [2] + rs; |
390 |
|
391 |
jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
392 |
} |
393 |
|
394 |
jpeg_finish_decompress (&cinfo); |
395 |
fclose (fp); |
396 |
jpeg_destroy_decompress (&cinfo); |
397 |
} |
398 |
OUTPUT: |
399 |
RETVAL |
400 |
|
401 |
void |
402 |
compare (GdkPixbuf *a, GdkPixbuf *b) |
403 |
PPCODE: |
404 |
{ |
405 |
int w = gdk_pixbuf_get_width (a); |
406 |
int h = gdk_pixbuf_get_height (a); |
407 |
|
408 |
int sa = gdk_pixbuf_get_rowstride (a); |
409 |
int sb = gdk_pixbuf_get_rowstride (b); |
410 |
|
411 |
guchar *pa = gdk_pixbuf_get_pixels (a); |
412 |
guchar *pb = gdk_pixbuf_get_pixels (b); |
413 |
|
414 |
int x, y; |
415 |
|
416 |
assert (w == gdk_pixbuf_get_width (b)); |
417 |
assert (h == gdk_pixbuf_get_height (b)); |
418 |
|
419 |
assert (gdk_pixbuf_get_n_channels (a) == 3); |
420 |
assert (gdk_pixbuf_get_n_channels (b) == 3); |
421 |
|
422 |
double diff = 0.; |
423 |
int peak = 0; |
424 |
|
425 |
if (w && h) |
426 |
for (y = 0; y < h; y++) |
427 |
{ |
428 |
guchar *pa_ = pa + y * sa; |
429 |
guchar *pb_ = pb + y * sb; |
430 |
|
431 |
for (x = 0; x < w; x++) |
432 |
{ |
433 |
int d; |
434 |
|
435 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
436 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
437 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
438 |
} |
439 |
} |
440 |
|
441 |
EXTEND (SP, 2); |
442 |
PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
443 |
PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
444 |
} |
445 |
|
446 |
############################################################################# |
447 |
|
448 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
449 |
|
450 |
# currently only works for filenames (octet strings) |
451 |
|
452 |
SV * |
453 |
foldcase (SV *pathsv) |
454 |
PROTOTYPE: $ |
455 |
CODE: |
456 |
{ |
457 |
STRLEN plen; |
458 |
U8 *path = (U8 *)SvPV (pathsv, plen); |
459 |
U8 *pend = path + plen; |
460 |
U8 dst [plen * 6 * 3], *dstp = dst; |
461 |
|
462 |
while (path < pend) |
463 |
{ |
464 |
U8 ch = *path; |
465 |
|
466 |
if (ch >= 'a' && ch <= 'z') |
467 |
*dstp++ = *path++; |
468 |
else if (ch >= 'A' && ch <= 'Z') |
469 |
*dstp++ = *path++ + ('a' - 'A'); |
470 |
else if (ch >= '0' && ch <= '9') |
471 |
{ |
472 |
STRLEN el, nl = 0; |
473 |
while (*path >= '0' && *path <= '9' && path < pend) |
474 |
path++, nl++; |
475 |
|
476 |
for (el = nl; el < 6; el++) |
477 |
*dstp++ = '0'; |
478 |
|
479 |
memcpy (dstp, path - nl, nl); |
480 |
dstp += nl; |
481 |
} |
482 |
else |
483 |
*dstp++ = *path++; |
484 |
#if 0 |
485 |
else |
486 |
{ |
487 |
STRLEN cl; |
488 |
to_utf8_fold (path, dstp, &cl); |
489 |
dstp += cl; |
490 |
path += is_utf8_char (path); |
491 |
} |
492 |
#endif |
493 |
} |
494 |
|
495 |
RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
496 |
} |
497 |
OUTPUT: |
498 |
RETVAL |
499 |
|
500 |
GdkPixbuf_noinc * |
501 |
p7_to_pb (int w, int h, SV *src_sv) |
502 |
PROTOTYPE: @ |
503 |
CODE: |
504 |
{ |
505 |
int x, y; |
506 |
guchar *dst, *d; |
507 |
int dstr; |
508 |
guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
509 |
|
510 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
511 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
512 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
513 |
|
514 |
for (y = 0; y < h; y++) |
515 |
for (d = dst + y * dstr, x = 0; x < w; x++) |
516 |
{ |
517 |
*d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
518 |
*d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
519 |
*d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
520 |
|
521 |
src++; |
522 |
} |
523 |
} |
524 |
OUTPUT: |
525 |
RETVAL |
526 |
|
527 |
############################################################################# |
528 |
|
529 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
530 |
|
531 |
void |
532 |
dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
533 |
CODE: |
534 |
{ |
535 |
int w = gdk_pixbuf_get_width (pb); |
536 |
int h = gdk_pixbuf_get_height (pb); |
537 |
int x, y, i; |
538 |
guchar *dst; |
539 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
540 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
541 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
542 |
|
543 |
a85_init (); |
544 |
|
545 |
for (y = 0; y < h; y++) |
546 |
for (x = 0; x < w; x++) |
547 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
548 |
a85_push (fp, src [x * bpp + y * sstr + i]); |
549 |
|
550 |
a85_finish (fp); |
551 |
} |
552 |
|
553 |
void |
554 |
dump_binary (PerlIO *fp, GdkPixbuf *pb) |
555 |
CODE: |
556 |
{ |
557 |
int w = gdk_pixbuf_get_width (pb); |
558 |
int h = gdk_pixbuf_get_height (pb); |
559 |
int x, y, i; |
560 |
guchar *dst; |
561 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
562 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
563 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
564 |
|
565 |
for (y = 0; y < h; y++) |
566 |
for (x = 0; x < w; x++) |
567 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
568 |
PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
569 |
} |
570 |
|
571 |
############################################################################# |
572 |
|
573 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
574 |
|
575 |
SV * |
576 |
pb_to_hv84 (GdkPixbuf *pb) |
577 |
CODE: |
578 |
{ |
579 |
int w = gdk_pixbuf_get_width (pb); |
580 |
int h = gdk_pixbuf_get_height (pb); |
581 |
int x, y; |
582 |
guchar *dst; |
583 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
584 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
585 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
586 |
|
587 |
RETVAL = newSV (6 * 8 * 12 / 8); |
588 |
SvPOK_only (RETVAL); |
589 |
SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
590 |
|
591 |
dst = (guchar *)SvPVX (RETVAL); |
592 |
|
593 |
/* some primitive error distribution + random dithering */ |
594 |
|
595 |
for (y = 0; y < h; y++) |
596 |
{ |
597 |
guchar *p = src + y * sstr; |
598 |
|
599 |
for (x = 0; x < w; x += 2) |
600 |
{ |
601 |
unsigned int r, g, b, h, s, v, H, V1, V2; |
602 |
|
603 |
if (bpp == 3) |
604 |
r = *p++, g = *p++, b = *p++; |
605 |
else if (bpp == 1) |
606 |
r = g = b = *p++; |
607 |
else |
608 |
abort (); |
609 |
|
610 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
611 |
|
612 |
H = (h * 15 / 255) << 4; |
613 |
V1 = v; |
614 |
|
615 |
if (bpp == 3) |
616 |
r = *p++, g = *p++, b = *p++; |
617 |
else if (bpp == 1) |
618 |
r = g = b = *p++; |
619 |
else |
620 |
abort (); |
621 |
|
622 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
623 |
|
624 |
H |= h * 15 / 255; |
625 |
V2 = v; |
626 |
|
627 |
*dst++ = H; |
628 |
*dst++ = V1; |
629 |
*dst++ = V2; |
630 |
} |
631 |
} |
632 |
} |
633 |
OUTPUT: |
634 |
RETVAL |
635 |
|
636 |
SV * |
637 |
hv84_to_av (unsigned char *hv84) |
638 |
CODE: |
639 |
{ |
640 |
int i = 72 / 3; |
641 |
AV *av = newAV (); |
642 |
|
643 |
RETVAL = (SV *)newRV_noinc ((SV *)av); |
644 |
while (i--) |
645 |
{ |
646 |
int h = *hv84++; |
647 |
int v1 = *hv84++; |
648 |
int v2 = *hv84++; |
649 |
|
650 |
av_push (av, newSViv (v1)); |
651 |
av_push (av, newSViv ((h >> 4) * 255 / 15)); |
652 |
av_push (av, newSViv (v2)); |
653 |
av_push (av, newSViv ((h & 15) * 255 / 15)); |
654 |
} |
655 |
} |
656 |
OUTPUT: |
657 |
RETVAL |
658 |
|
659 |
############################################################################# |
660 |
|
661 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
662 |
|
663 |
SV * |
664 |
extract_features (SV *ar) |
665 |
CODE: |
666 |
{ |
667 |
int i; |
668 |
AV *av, *result; |
669 |
|
670 |
if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
671 |
croak ("Not an array ref as first argument to extract_features"); |
672 |
|
673 |
av = (AV *) SvRV (ar); |
674 |
result = newAV (); |
675 |
|
676 |
for (i = 0; i <= av_len (av); ++i) |
677 |
{ |
678 |
SV *sv = *av_fetch (av, i, 1); |
679 |
SV *histsv = newSV (9 * sizeof (float) + 1); |
680 |
|
681 |
SvPOK_on (histsv); |
682 |
SvCUR_set (histsv, 9 * sizeof (float)); |
683 |
float *hist = (float *)SvPVX (histsv); |
684 |
|
685 |
struct feature f_h, f_s, f_v; |
686 |
feature_init (&f_h); |
687 |
feature_init (&f_s); |
688 |
feature_init (&f_v); |
689 |
|
690 |
{ |
691 |
STRLEN len; |
692 |
unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
693 |
while (len >= 3) |
694 |
{ |
695 |
unsigned int r, g, b, h, s, v; |
696 |
r = *buf++; g = *buf++; b = *buf++; |
697 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
698 |
|
699 |
feature_update_pass_1 (&f_h, h); |
700 |
feature_update_pass_1 (&f_s, s); |
701 |
feature_update_pass_1 (&f_v, v); |
702 |
|
703 |
len -= 3; |
704 |
} |
705 |
|
706 |
feature_finish_pass_1 (&f_h); |
707 |
feature_finish_pass_1 (&f_s); |
708 |
feature_finish_pass_1 (&f_v); |
709 |
} |
710 |
|
711 |
{ |
712 |
STRLEN len; |
713 |
unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
714 |
while (len >= 3) |
715 |
{ |
716 |
unsigned int r, g, b, h, s, v; |
717 |
r = *buf++; g = *buf++; b = *buf++; |
718 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
719 |
|
720 |
feature_update_pass_2 (&f_h, h); |
721 |
feature_update_pass_2 (&f_s, s); |
722 |
feature_update_pass_2 (&f_v, v); |
723 |
|
724 |
len -= 3; |
725 |
} |
726 |
|
727 |
feature_finish_pass_2 (&f_h); |
728 |
feature_finish_pass_2 (&f_s); |
729 |
feature_finish_pass_2 (&f_v); |
730 |
} |
731 |
|
732 |
hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
733 |
hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
734 |
hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
735 |
|
736 |
av_push (result, histsv); |
737 |
} |
738 |
|
739 |
RETVAL = newRV_noinc ((SV *)result); |
740 |
} |
741 |
OUTPUT: |
742 |
RETVAL |
743 |
|