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