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 |
#include "perlmulticore.h" |
22 |
|
23 |
#define IW 80 /* MUST match Schnauzer.pm! */ |
24 |
#define IH 60 /* MUST match Schnauzer.pm! */ |
25 |
|
26 |
#define RAND (seed = (seed + 7141) * 54773 % 134456) |
27 |
|
28 |
#define LINELENGTH 240 |
29 |
|
30 |
#define ELLIPSIS "\xe2\x80\xa6" |
31 |
|
32 |
typedef char *octet_string; |
33 |
|
34 |
struct jpg_err_mgr |
35 |
{ |
36 |
struct jpeg_error_mgr err; |
37 |
jmp_buf setjmp_buffer; |
38 |
}; |
39 |
|
40 |
static void |
41 |
cv_error_exit (j_common_ptr cinfo) |
42 |
{ |
43 |
longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
44 |
} |
45 |
|
46 |
static void |
47 |
cv_error_output (j_common_ptr cinfo) |
48 |
{ |
49 |
return; |
50 |
} |
51 |
|
52 |
static void |
53 |
rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
54 |
unsigned int *h, unsigned int *s, unsigned int *v) |
55 |
{ |
56 |
unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
57 |
unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
58 |
unsigned int delta = mx - mn; |
59 |
|
60 |
*v = mx; |
61 |
|
62 |
*s = mx ? delta * 255 / mx : 0; |
63 |
|
64 |
if (delta == 0) |
65 |
*h = 0; |
66 |
else |
67 |
{ |
68 |
if (r == mx) |
69 |
*h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
70 |
else if (g == mx) |
71 |
*h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
72 |
else if (b == mx) |
73 |
*h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
74 |
|
75 |
*h &= 255; |
76 |
} |
77 |
} |
78 |
|
79 |
struct feature { |
80 |
float v1, v2, v3; // mean, square, cube |
81 |
int n; |
82 |
}; |
83 |
|
84 |
static void |
85 |
feature_init (struct feature *f) |
86 |
{ |
87 |
f->v1 = 0.; |
88 |
f->v2 = 0.; |
89 |
f->v3 = 0.; |
90 |
f->n = 0; |
91 |
} |
92 |
|
93 |
// didn't find an algorithm to neatly do mean, variance and skew in one pass. |
94 |
// elmex ist schuld. |
95 |
static void |
96 |
feature_update_pass_1 (struct feature *f, unsigned int v) |
97 |
{ |
98 |
f->v1 += v; |
99 |
f->n += 1; |
100 |
} |
101 |
|
102 |
static void |
103 |
feature_finish_pass_1 (struct feature *f) |
104 |
{ |
105 |
if (f->n < 1) |
106 |
return; |
107 |
|
108 |
f->v1 /= f->n; |
109 |
} |
110 |
|
111 |
static void |
112 |
feature_update_pass_2 (struct feature *f, unsigned int v) |
113 |
{ |
114 |
float d = v - f->v1; |
115 |
|
116 |
f->v2 += d * d; |
117 |
f->v3 += d * d * d; |
118 |
} |
119 |
|
120 |
static void |
121 |
feature_finish_pass_2 (struct feature *f) |
122 |
{ |
123 |
if (f->n < 1) |
124 |
return; |
125 |
|
126 |
f->v2 /= f->n; |
127 |
f->v3 /= f->n; |
128 |
|
129 |
f->v1 /= 255.; |
130 |
f->v2 /= 255. * 255.; f->v2 = sqrtf (f->v2); |
131 |
f->v3 /= 255. * 255. * 255.; f->v3 = powf (fabsf (f->v3), 1./3.); |
132 |
} |
133 |
|
134 |
static guint32 a85_val; |
135 |
static guint a85_cnt; |
136 |
static guchar a85_buf[LINELENGTH], *a85_ptr; |
137 |
|
138 |
static void |
139 |
a85_init (void) |
140 |
{ |
141 |
a85_cnt = 4; |
142 |
a85_ptr = a85_buf; |
143 |
} |
144 |
|
145 |
static void |
146 |
a85_push (PerlIO *fp, guchar c) |
147 |
{ |
148 |
a85_val = a85_val << 8 | c; |
149 |
|
150 |
if (!--a85_cnt) |
151 |
{ |
152 |
a85_cnt = 4; |
153 |
if (a85_val) |
154 |
{ |
155 |
a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
156 |
a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
157 |
a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
158 |
a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
159 |
a85_ptr[0] = (a85_val ) + 33; |
160 |
|
161 |
a85_ptr += 5; |
162 |
} |
163 |
else |
164 |
*a85_ptr++ = 'z'; |
165 |
|
166 |
if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
167 |
{ |
168 |
*a85_ptr++ = '\n'; |
169 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
170 |
a85_ptr = a85_buf; |
171 |
} |
172 |
} |
173 |
|
174 |
} |
175 |
|
176 |
static void |
177 |
a85_finish (PerlIO *fp) |
178 |
{ |
179 |
while (a85_cnt != 4) |
180 |
a85_push (fp, 0); |
181 |
|
182 |
*a85_ptr++ = '~'; // probably buggy end-marker |
183 |
*a85_ptr++ = '>'; // probably buggy end-marker |
184 |
*a85_ptr++ = '\n'; |
185 |
|
186 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
187 |
} |
188 |
|
189 |
///////////////////////////////////////////////////////////////////////////// |
190 |
|
191 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
192 |
|
193 |
PROTOTYPES: ENABLE |
194 |
|
195 |
# missing function in perl. really :) |
196 |
int |
197 |
common_prefix_length (a, b) |
198 |
unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
199 |
unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
200 |
CODE: |
201 |
RETVAL = 0; |
202 |
|
203 |
while (*a == *b && *a) |
204 |
{ |
205 |
RETVAL += (*a & 0xc0) != 0x80; |
206 |
a++, b++; |
207 |
} |
208 |
|
209 |
OUTPUT: |
210 |
RETVAL |
211 |
|
212 |
const char * |
213 |
magic (octet_string path) |
214 |
CODE: |
215 |
{ |
216 |
static magic_t cookie; |
217 |
|
218 |
if (!cookie) |
219 |
{ |
220 |
cookie = magic_open (MAGIC_SYMLINK); |
221 |
|
222 |
if (cookie) |
223 |
magic_load (cookie, 0); |
224 |
else |
225 |
XSRETURN_UNDEF; |
226 |
} |
227 |
|
228 |
RETVAL = magic_file (cookie, path); |
229 |
} |
230 |
OUTPUT: |
231 |
RETVAL |
232 |
|
233 |
const char * |
234 |
magic_mime (octet_string path) |
235 |
CODE: |
236 |
{ |
237 |
static magic_t cookie; |
238 |
|
239 |
if (!cookie) |
240 |
{ |
241 |
cookie = magic_open (MAGIC_MIME | MAGIC_SYMLINK); |
242 |
|
243 |
if (cookie) |
244 |
magic_load (cookie, 0); |
245 |
else |
246 |
XSRETURN_UNDEF; |
247 |
} |
248 |
|
249 |
perlinterp_release (); |
250 |
RETVAL = magic_file (cookie, path); |
251 |
perlinterp_acquire (); |
252 |
} |
253 |
OUTPUT: |
254 |
RETVAL |
255 |
|
256 |
# missing/broken in Gtk2 perl module |
257 |
|
258 |
void |
259 |
gdk_window_clear_hints (GdkWindow *window) |
260 |
CODE: |
261 |
gdk_window_set_geometry_hints (window, 0, 0); |
262 |
|
263 |
gboolean |
264 |
gdk_net_wm_supports (GdkAtom property) |
265 |
CODE: |
266 |
#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
267 |
RETVAL = gdk_net_wm_supports (property); |
268 |
#else |
269 |
RETVAL = 0; |
270 |
#endif |
271 |
OUTPUT: |
272 |
RETVAL |
273 |
|
274 |
GdkPixbuf_noinc * |
275 |
dealpha_expose (GdkPixbuf *pb) |
276 |
CODE: |
277 |
perlinterp_release (); |
278 |
{ |
279 |
int w = gdk_pixbuf_get_width (pb); |
280 |
int h = gdk_pixbuf_get_height (pb); |
281 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
282 |
int x, y, i; |
283 |
guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
284 |
int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
285 |
|
286 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
287 |
|
288 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
289 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
290 |
|
291 |
for (x = 0; x < w; x++) |
292 |
for (y = 0; y < h; y++) |
293 |
for (i = 0; i < 3; i++) |
294 |
dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
295 |
} |
296 |
perlinterp_acquire (); |
297 |
OUTPUT: |
298 |
RETVAL |
299 |
|
300 |
GdkPixbuf_noinc * |
301 |
rotate (GdkPixbuf *pb, int angle) |
302 |
CODE: |
303 |
perlinterp_release (); |
304 |
if (angle < 0) |
305 |
angle += 360; |
306 |
RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
307 |
: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
308 |
: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
309 |
: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
310 |
: angle); |
311 |
perlinterp_acquire (); |
312 |
OUTPUT: |
313 |
RETVAL |
314 |
|
315 |
GdkPixbuf_noinc * |
316 |
load_jpeg (SV *path, int thumbnail=0) |
317 |
CODE: |
318 |
{ |
319 |
struct jpeg_decompress_struct cinfo; |
320 |
struct jpg_err_mgr jerr; |
321 |
guchar *data; |
322 |
int rs; |
323 |
FILE *fp; |
324 |
volatile GdkPixbuf *pb = 0; |
325 |
|
326 |
RETVAL = 0; |
327 |
|
328 |
fp = fopen (SvPVbyte_nolen (path), "rb"); |
329 |
|
330 |
if (!fp) |
331 |
XSRETURN_UNDEF; |
332 |
|
333 |
perlinterp_release (); |
334 |
|
335 |
cinfo.err = jpeg_std_error (&jerr.err); |
336 |
|
337 |
jerr.err.error_exit = cv_error_exit; |
338 |
jerr.err.output_message = cv_error_output; |
339 |
|
340 |
if ((rs = setjmp (jerr.setjmp_buffer))) |
341 |
{ |
342 |
fclose (fp); |
343 |
jpeg_destroy_decompress (&cinfo); |
344 |
|
345 |
if (pb) |
346 |
g_object_unref ((gpointer)pb); |
347 |
|
348 |
perlinterp_acquire (); |
349 |
XSRETURN_UNDEF; |
350 |
} |
351 |
|
352 |
jpeg_create_decompress (&cinfo); |
353 |
|
354 |
jpeg_stdio_src (&cinfo, fp); |
355 |
jpeg_read_header (&cinfo, TRUE); |
356 |
|
357 |
cinfo.dct_method = JDCT_DEFAULT; |
358 |
cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
359 |
cinfo.do_block_smoothing = FALSE; |
360 |
cinfo.out_color_space = JCS_RGB; |
361 |
cinfo.quantize_colors = FALSE; |
362 |
|
363 |
cinfo.scale_num = 1; |
364 |
cinfo.scale_denom = 1; |
365 |
|
366 |
jpeg_calc_output_dimensions (&cinfo); |
367 |
|
368 |
if (thumbnail) |
369 |
{ |
370 |
cinfo.dct_method = JDCT_FASTEST; |
371 |
cinfo.do_fancy_upsampling = FALSE; |
372 |
|
373 |
while (cinfo.scale_denom < 8 |
374 |
&& cinfo.output_width >= IW*4 |
375 |
&& cinfo.output_height >= IH*4) |
376 |
{ |
377 |
cinfo.scale_denom <<= 1; |
378 |
jpeg_calc_output_dimensions (&cinfo); |
379 |
} |
380 |
} |
381 |
|
382 |
pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
383 |
if (!RETVAL) |
384 |
longjmp (jerr.setjmp_buffer, 2); |
385 |
|
386 |
data = gdk_pixbuf_get_pixels (RETVAL); |
387 |
rs = gdk_pixbuf_get_rowstride (RETVAL); |
388 |
|
389 |
if (cinfo.output_components != 3) |
390 |
longjmp (jerr.setjmp_buffer, 3); |
391 |
|
392 |
jpeg_start_decompress (&cinfo); |
393 |
|
394 |
while (cinfo.output_scanline < cinfo.output_height) |
395 |
{ |
396 |
int remaining = cinfo.output_height - cinfo.output_scanline; |
397 |
JSAMPROW rp[4]; |
398 |
|
399 |
rp [0] = data + cinfo.output_scanline * rs; |
400 |
rp [1] = (guchar *)rp [0] + rs; |
401 |
rp [2] = (guchar *)rp [1] + rs; |
402 |
rp [3] = (guchar *)rp [2] + rs; |
403 |
|
404 |
jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
405 |
} |
406 |
|
407 |
jpeg_finish_decompress (&cinfo); |
408 |
fclose (fp); |
409 |
jpeg_destroy_decompress (&cinfo); |
410 |
perlinterp_acquire (); |
411 |
} |
412 |
OUTPUT: |
413 |
RETVAL |
414 |
|
415 |
void |
416 |
compare (GdkPixbuf *a, GdkPixbuf *b) |
417 |
PPCODE: |
418 |
perlinterp_release (); |
419 |
{ |
420 |
int w = gdk_pixbuf_get_width (a); |
421 |
int h = gdk_pixbuf_get_height (a); |
422 |
|
423 |
int sa = gdk_pixbuf_get_rowstride (a); |
424 |
int sb = gdk_pixbuf_get_rowstride (b); |
425 |
|
426 |
guchar *pa = gdk_pixbuf_get_pixels (a); |
427 |
guchar *pb = gdk_pixbuf_get_pixels (b); |
428 |
|
429 |
int x, y; |
430 |
|
431 |
assert (w == gdk_pixbuf_get_width (b)); |
432 |
assert (h == gdk_pixbuf_get_height (b)); |
433 |
|
434 |
assert (gdk_pixbuf_get_n_channels (a) == 3); |
435 |
assert (gdk_pixbuf_get_n_channels (b) == 3); |
436 |
|
437 |
double diff = 0.; |
438 |
int peak = 0; |
439 |
|
440 |
if (w && h) |
441 |
for (y = 0; y < h; y++) |
442 |
{ |
443 |
guchar *pa_ = pa + y * sa; |
444 |
guchar *pb_ = pb + y * sb; |
445 |
|
446 |
for (x = 0; x < w; x++) |
447 |
{ |
448 |
int d; |
449 |
|
450 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
451 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
452 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
453 |
} |
454 |
} |
455 |
|
456 |
perlinterp_acquire (); |
457 |
|
458 |
EXTEND (SP, 2); |
459 |
PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
460 |
PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
461 |
} |
462 |
|
463 |
############################################################################# |
464 |
|
465 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
466 |
|
467 |
# currently only works for filenames (octet strings) |
468 |
|
469 |
SV * |
470 |
foldcase (SV *pathsv) |
471 |
PROTOTYPE: $ |
472 |
CODE: |
473 |
{ |
474 |
STRLEN plen; |
475 |
U8 *path = (U8 *)SvPV (pathsv, plen); |
476 |
U8 *pend = path + plen; |
477 |
U8 dst [plen * 6 * 3], *dstp = dst; |
478 |
|
479 |
while (path < pend) |
480 |
{ |
481 |
U8 ch = *path; |
482 |
|
483 |
if (ch >= 'a' && ch <= 'z') |
484 |
*dstp++ = *path++; |
485 |
else if (ch >= 'A' && ch <= 'Z') |
486 |
*dstp++ = *path++ + ('a' - 'A'); |
487 |
else if (ch >= '0' && ch <= '9') |
488 |
{ |
489 |
STRLEN el, nl = 0; |
490 |
while (*path >= '0' && *path <= '9' && path < pend) |
491 |
path++, nl++; |
492 |
|
493 |
for (el = nl; el < 6; el++) |
494 |
*dstp++ = '0'; |
495 |
|
496 |
memcpy (dstp, path - nl, nl); |
497 |
dstp += nl; |
498 |
} |
499 |
else |
500 |
*dstp++ = *path++; |
501 |
#if 0 |
502 |
else |
503 |
{ |
504 |
STRLEN cl; |
505 |
to_utf8_fold (path, dstp, &cl); |
506 |
dstp += cl; |
507 |
path += is_utf8_char (path); |
508 |
} |
509 |
#endif |
510 |
} |
511 |
|
512 |
RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
513 |
} |
514 |
OUTPUT: |
515 |
RETVAL |
516 |
|
517 |
GdkPixbuf_noinc * |
518 |
p7_to_pb (int w, int h, SV *src_sv) |
519 |
PROTOTYPE: @ |
520 |
CODE: |
521 |
{ |
522 |
int x, y; |
523 |
guchar *dst, *d; |
524 |
int dstr; |
525 |
guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
526 |
|
527 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
528 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
529 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
530 |
|
531 |
for (y = 0; y < h; y++) |
532 |
for (d = dst + y * dstr, x = 0; x < w; x++) |
533 |
{ |
534 |
*d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
535 |
*d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
536 |
*d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
537 |
|
538 |
src++; |
539 |
} |
540 |
} |
541 |
OUTPUT: |
542 |
RETVAL |
543 |
|
544 |
############################################################################# |
545 |
|
546 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
547 |
|
548 |
void |
549 |
dump_ascii85 (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 |
a85_init (); |
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 |
a85_push (fp, src [x * bpp + y * sstr + i]); |
566 |
|
567 |
a85_finish (fp); |
568 |
} |
569 |
|
570 |
void |
571 |
dump_binary (PerlIO *fp, 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, i; |
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 |
for (y = 0; y < h; y++) |
583 |
for (x = 0; x < w; x++) |
584 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
585 |
PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
586 |
} |
587 |
|
588 |
############################################################################# |
589 |
|
590 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
591 |
|
592 |
SV * |
593 |
pb_to_hv84 (GdkPixbuf *pb) |
594 |
CODE: |
595 |
{ |
596 |
int w = gdk_pixbuf_get_width (pb); |
597 |
int h = gdk_pixbuf_get_height (pb); |
598 |
int x, y; |
599 |
guchar *dst; |
600 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
601 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
602 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
603 |
|
604 |
RETVAL = newSV (6 * 8 * 12 / 8); |
605 |
SvPOK_only (RETVAL); |
606 |
SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
607 |
|
608 |
dst = (guchar *)SvPVX (RETVAL); |
609 |
|
610 |
/* some primitive error distribution + random dithering */ |
611 |
|
612 |
for (y = 0; y < h; y++) |
613 |
{ |
614 |
guchar *p = src + y * sstr; |
615 |
|
616 |
for (x = 0; x < w; x += 2) |
617 |
{ |
618 |
unsigned int r, g, b, h, s, v, H, V1, V2; |
619 |
|
620 |
if (bpp == 3) |
621 |
r = *p++, g = *p++, b = *p++; |
622 |
else if (bpp == 1) |
623 |
r = g = b = *p++; |
624 |
else |
625 |
abort (); |
626 |
|
627 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
628 |
|
629 |
H = (h * 15 / 255) << 4; |
630 |
V1 = v; |
631 |
|
632 |
if (bpp == 3) |
633 |
r = *p++, g = *p++, b = *p++; |
634 |
else if (bpp == 1) |
635 |
r = g = b = *p++; |
636 |
else |
637 |
abort (); |
638 |
|
639 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
640 |
|
641 |
H |= h * 15 / 255; |
642 |
V2 = v; |
643 |
|
644 |
*dst++ = H; |
645 |
*dst++ = V1; |
646 |
*dst++ = V2; |
647 |
} |
648 |
} |
649 |
} |
650 |
OUTPUT: |
651 |
RETVAL |
652 |
|
653 |
SV * |
654 |
hv84_to_av (unsigned char *hv84) |
655 |
CODE: |
656 |
{ |
657 |
int i = 72 / 3; |
658 |
AV *av = newAV (); |
659 |
|
660 |
RETVAL = (SV *)newRV_noinc ((SV *)av); |
661 |
while (i--) |
662 |
{ |
663 |
int h = *hv84++; |
664 |
int v1 = *hv84++; |
665 |
int v2 = *hv84++; |
666 |
|
667 |
av_push (av, newSViv (v1)); |
668 |
av_push (av, newSViv ((h >> 4) * 255 / 15)); |
669 |
av_push (av, newSViv (v2)); |
670 |
av_push (av, newSViv ((h & 15) * 255 / 15)); |
671 |
} |
672 |
} |
673 |
OUTPUT: |
674 |
RETVAL |
675 |
|
676 |
############################################################################# |
677 |
|
678 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
679 |
|
680 |
SV * |
681 |
extract_features (SV *ar) |
682 |
CODE: |
683 |
{ |
684 |
int i; |
685 |
AV *av, *result; |
686 |
|
687 |
if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
688 |
croak ("Not an array ref as first argument to extract_features"); |
689 |
|
690 |
av = (AV *) SvRV (ar); |
691 |
result = newAV (); |
692 |
|
693 |
for (i = 0; i <= av_len (av); ++i) |
694 |
{ |
695 |
SV *sv = *av_fetch (av, i, 1); |
696 |
SV *histsv = newSV (9 * sizeof (float) + 1); |
697 |
|
698 |
SvPOK_on (histsv); |
699 |
SvCUR_set (histsv, 9 * sizeof (float)); |
700 |
float *hist = (float *)SvPVX (histsv); |
701 |
|
702 |
struct feature f_h, f_s, f_v; |
703 |
feature_init (&f_h); |
704 |
feature_init (&f_s); |
705 |
feature_init (&f_v); |
706 |
|
707 |
{ |
708 |
STRLEN len; |
709 |
unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
710 |
while (len >= 3) |
711 |
{ |
712 |
unsigned int r, g, b, h, s, v; |
713 |
r = *buf++; g = *buf++; b = *buf++; |
714 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
715 |
|
716 |
feature_update_pass_1 (&f_h, h); |
717 |
feature_update_pass_1 (&f_s, s); |
718 |
feature_update_pass_1 (&f_v, v); |
719 |
|
720 |
len -= 3; |
721 |
} |
722 |
|
723 |
feature_finish_pass_1 (&f_h); |
724 |
feature_finish_pass_1 (&f_s); |
725 |
feature_finish_pass_1 (&f_v); |
726 |
} |
727 |
|
728 |
{ |
729 |
STRLEN len; |
730 |
unsigned char *buf = (unsigned char *)SvPVbyte (sv, len); |
731 |
while (len >= 3) |
732 |
{ |
733 |
unsigned int r, g, b, h, s, v; |
734 |
r = *buf++; g = *buf++; b = *buf++; |
735 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
736 |
|
737 |
feature_update_pass_2 (&f_h, h); |
738 |
feature_update_pass_2 (&f_s, s); |
739 |
feature_update_pass_2 (&f_v, v); |
740 |
|
741 |
len -= 3; |
742 |
} |
743 |
|
744 |
feature_finish_pass_2 (&f_h); |
745 |
feature_finish_pass_2 (&f_s); |
746 |
feature_finish_pass_2 (&f_v); |
747 |
} |
748 |
|
749 |
hist [0] = f_h.v1 * 2.; hist [1] = f_h.v2 * 2.; hist [2] = f_h.v3 * 2.; |
750 |
hist [3] = f_s.v1 ; hist [4] = f_s.v2 ; hist [5] = f_s.v3 ; |
751 |
hist [6] = f_v.v1 * .5; hist [7] = f_v.v2 * .5; hist [8] = f_v.v3 * .5; |
752 |
|
753 |
av_push (result, histsv); |
754 |
} |
755 |
|
756 |
RETVAL = newRV_noinc ((SV *)result); |
757 |
} |
758 |
OUTPUT: |
759 |
RETVAL |
760 |
|