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 |
static guint32 a85_val; |
74 |
static guint a85_cnt; |
75 |
static guchar a85_buf[LINELENGTH], *a85_ptr; |
76 |
|
77 |
static void |
78 |
a85_init (void) |
79 |
{ |
80 |
a85_cnt = 4; |
81 |
a85_ptr = a85_buf; |
82 |
} |
83 |
|
84 |
static void |
85 |
a85_push (PerlIO *fp, guchar c) |
86 |
{ |
87 |
a85_val = a85_val << 8 | c; |
88 |
|
89 |
if (!--a85_cnt) |
90 |
{ |
91 |
a85_cnt = 4; |
92 |
if (a85_val) |
93 |
{ |
94 |
a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
95 |
a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
96 |
a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
97 |
a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
98 |
a85_ptr[0] = (a85_val ) + 33; |
99 |
|
100 |
a85_ptr += 5; |
101 |
} |
102 |
else |
103 |
*a85_ptr++ = 'z'; |
104 |
|
105 |
if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
106 |
{ |
107 |
*a85_ptr++ = '\n'; |
108 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
109 |
a85_ptr = a85_buf; |
110 |
} |
111 |
} |
112 |
|
113 |
} |
114 |
|
115 |
static void |
116 |
a85_finish (PerlIO *fp) |
117 |
{ |
118 |
while (a85_cnt != 4) |
119 |
a85_push (fp, 0); |
120 |
|
121 |
*a85_ptr++ = '~'; // probably buggy end-marker |
122 |
*a85_ptr++ = '>'; // probably buggy end-marker |
123 |
*a85_ptr++ = '\n'; |
124 |
|
125 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
126 |
} |
127 |
|
128 |
///////////////////////////////////////////////////////////////////////////// |
129 |
|
130 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
131 |
|
132 |
PROTOTYPES: ENABLE |
133 |
|
134 |
# missing function in perl. really :) |
135 |
int |
136 |
common_prefix_length (a, b) |
137 |
unsigned char *a = (unsigned char *)SvPVutf8_nolen ($arg); |
138 |
unsigned char *b = (unsigned char *)SvPVutf8_nolen ($arg); |
139 |
CODE: |
140 |
RETVAL = 0; |
141 |
|
142 |
while (*a == *b && *a) |
143 |
{ |
144 |
RETVAL += (*a & 0xc0) != 0x80; |
145 |
a++, b++; |
146 |
} |
147 |
|
148 |
OUTPUT: |
149 |
RETVAL |
150 |
|
151 |
const char * |
152 |
magic (const char *path) |
153 |
CODE: |
154 |
{ |
155 |
static magic_t cookie; |
156 |
|
157 |
if (!cookie) |
158 |
{ |
159 |
cookie = magic_open (MAGIC_NONE); |
160 |
|
161 |
if (cookie) |
162 |
magic_load (cookie, 0); |
163 |
else |
164 |
XSRETURN_UNDEF; |
165 |
} |
166 |
|
167 |
RETVAL = magic_file (cookie, path); |
168 |
} |
169 |
OUTPUT: |
170 |
RETVAL |
171 |
|
172 |
const char * |
173 |
magic_mime (const char *path) |
174 |
CODE: |
175 |
{ |
176 |
static magic_t cookie; |
177 |
|
178 |
if (!cookie) |
179 |
{ |
180 |
cookie = magic_open (MAGIC_MIME); |
181 |
|
182 |
if (cookie) |
183 |
magic_load (cookie, 0); |
184 |
else |
185 |
XSRETURN_UNDEF; |
186 |
} |
187 |
|
188 |
RETVAL = magic_file (cookie, path); |
189 |
} |
190 |
OUTPUT: |
191 |
RETVAL |
192 |
|
193 |
# missing in Gtk2 perl module |
194 |
|
195 |
gboolean |
196 |
gdk_net_wm_supports (GdkAtom property) |
197 |
CODE: |
198 |
#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
199 |
RETVAL = gdk_net_wm_supports (property); |
200 |
#else |
201 |
RETVAL = 0; |
202 |
#endif |
203 |
OUTPUT: |
204 |
RETVAL |
205 |
|
206 |
GdkPixbuf_noinc * |
207 |
dealpha_expose (GdkPixbuf *pb) |
208 |
CODE: |
209 |
{ |
210 |
int w = gdk_pixbuf_get_width (pb); |
211 |
int h = gdk_pixbuf_get_height (pb); |
212 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
213 |
int x, y, i; |
214 |
guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
215 |
int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
216 |
|
217 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
218 |
|
219 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
220 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
221 |
|
222 |
for (x = 0; x < w; x++) |
223 |
for (y = 0; y < h; y++) |
224 |
for (i = 0; i < 3; i++) |
225 |
dst[x * 3 + y * dstr + i] = src[x * bpp + y * sstr + i]; |
226 |
} |
227 |
OUTPUT: |
228 |
RETVAL |
229 |
|
230 |
GdkPixbuf_noinc * |
231 |
rotate (GdkPixbuf *pb, int angle) |
232 |
CODE: |
233 |
RETVAL = gdk_pixbuf_rotate_simple (pb, angle == 0 ? GDK_PIXBUF_ROTATE_NONE |
234 |
: angle == 90 ? GDK_PIXBUF_ROTATE_COUNTERCLOCKWISE |
235 |
: angle == 180 ? GDK_PIXBUF_ROTATE_UPSIDEDOWN |
236 |
: angle == 270 ? GDK_PIXBUF_ROTATE_CLOCKWISE |
237 |
: angle); |
238 |
OUTPUT: |
239 |
RETVAL |
240 |
|
241 |
GdkPixbuf_noinc * |
242 |
load_jpeg (SV *path, int thumbnail=0) |
243 |
CODE: |
244 |
{ |
245 |
struct jpeg_decompress_struct cinfo; |
246 |
struct jpg_err_mgr jerr; |
247 |
guchar *data; |
248 |
int rs; |
249 |
FILE *fp; |
250 |
volatile GdkPixbuf *pb = 0; |
251 |
|
252 |
RETVAL = 0; |
253 |
|
254 |
fp = fopen (SvPVbyte_nolen (path), "rb"); |
255 |
|
256 |
if (!fp) |
257 |
XSRETURN_UNDEF; |
258 |
|
259 |
cinfo.err = jpeg_std_error (&jerr.err); |
260 |
|
261 |
jerr.err.error_exit = cv_error_exit; |
262 |
jerr.err.output_message = cv_error_output; |
263 |
|
264 |
if ((rs = setjmp (jerr.setjmp_buffer))) |
265 |
{ |
266 |
fclose (fp); |
267 |
jpeg_destroy_decompress (&cinfo); |
268 |
|
269 |
if (pb) |
270 |
g_object_unref ((gpointer)pb); |
271 |
|
272 |
XSRETURN_UNDEF; |
273 |
} |
274 |
|
275 |
jpeg_create_decompress (&cinfo); |
276 |
|
277 |
jpeg_stdio_src (&cinfo, fp); |
278 |
jpeg_read_header (&cinfo, TRUE); |
279 |
|
280 |
cinfo.dct_method = JDCT_DEFAULT; |
281 |
cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
282 |
cinfo.do_block_smoothing = FALSE; |
283 |
cinfo.out_color_space = JCS_RGB; |
284 |
cinfo.quantize_colors = FALSE; |
285 |
|
286 |
cinfo.scale_num = 1; |
287 |
cinfo.scale_denom = 1; |
288 |
|
289 |
jpeg_calc_output_dimensions (&cinfo); |
290 |
|
291 |
if (thumbnail) |
292 |
{ |
293 |
cinfo.dct_method = JDCT_FASTEST; |
294 |
cinfo.do_fancy_upsampling = FALSE; |
295 |
|
296 |
while (cinfo.scale_denom < 8 |
297 |
&& cinfo.output_width >= IW*4 |
298 |
&& cinfo.output_height >= IH*4) |
299 |
{ |
300 |
cinfo.scale_denom <<= 1; |
301 |
jpeg_calc_output_dimensions (&cinfo); |
302 |
} |
303 |
} |
304 |
|
305 |
pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
306 |
if (!RETVAL) |
307 |
longjmp (jerr.setjmp_buffer, 2); |
308 |
|
309 |
data = gdk_pixbuf_get_pixels (RETVAL); |
310 |
rs = gdk_pixbuf_get_rowstride (RETVAL); |
311 |
|
312 |
if (cinfo.output_components != 3) |
313 |
longjmp (jerr.setjmp_buffer, 3); |
314 |
|
315 |
jpeg_start_decompress (&cinfo); |
316 |
|
317 |
while (cinfo.output_scanline < cinfo.output_height) |
318 |
{ |
319 |
int remaining = cinfo.output_height - cinfo.output_scanline; |
320 |
JSAMPROW rp[4]; |
321 |
|
322 |
rp [0] = data + cinfo.output_scanline * rs; |
323 |
rp [1] = (guchar *)rp [0] + rs; |
324 |
rp [2] = (guchar *)rp [1] + rs; |
325 |
rp [3] = (guchar *)rp [2] + rs; |
326 |
|
327 |
jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
328 |
} |
329 |
|
330 |
jpeg_finish_decompress (&cinfo); |
331 |
fclose (fp); |
332 |
jpeg_destroy_decompress (&cinfo); |
333 |
} |
334 |
OUTPUT: |
335 |
RETVAL |
336 |
|
337 |
void |
338 |
compare (GdkPixbuf *a, GdkPixbuf *b) |
339 |
PPCODE: |
340 |
{ |
341 |
int w = gdk_pixbuf_get_width (a); |
342 |
int h = gdk_pixbuf_get_height (a); |
343 |
int sa = gdk_pixbuf_get_rowstride (a); |
344 |
int sb = gdk_pixbuf_get_rowstride (b); |
345 |
|
346 |
guchar *pa = gdk_pixbuf_get_pixels (a); |
347 |
guchar *pb = gdk_pixbuf_get_pixels (b); |
348 |
|
349 |
int x, y; |
350 |
|
351 |
assert (w == gdk_pixbuf_get_width (b)); |
352 |
assert (h == gdk_pixbuf_get_height (b)); |
353 |
|
354 |
assert (gdk_pixbuf_get_n_channels (a) == 3); |
355 |
assert (gdk_pixbuf_get_n_channels (b) == 3); |
356 |
|
357 |
double diff = 0.; |
358 |
int peak = 0; |
359 |
|
360 |
if (x && y) |
361 |
for (y = 0; y < h; y++) |
362 |
{ |
363 |
guchar *pa_ = pa + y * sa; |
364 |
guchar *pb_ = pb + y * sb; |
365 |
|
366 |
for (x = 0; x < w; x++) |
367 |
{ |
368 |
int d; |
369 |
|
370 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
371 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
372 |
d = ((int)*pa_++) - ((int)*pb_++); diff += d*d; peak = MAX (peak, abs (d)); |
373 |
} |
374 |
} |
375 |
|
376 |
EXTEND (SP, 2); |
377 |
PUSHs (sv_2mortal (newSVnv (sqrt (diff / (w * h * 3. * 255. * 255.))))); |
378 |
PUSHs (sv_2mortal (newSVnv (peak / 255.))); |
379 |
} |
380 |
|
381 |
############################################################################# |
382 |
|
383 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
384 |
|
385 |
SV * |
386 |
foldcase (SV *pathsv) |
387 |
PROTOTYPE: $ |
388 |
CODE: |
389 |
{ |
390 |
STRLEN plen; |
391 |
U8 *path = (U8 *)SvPVutf8 (pathsv, plen); |
392 |
U8 *pend = path + plen; |
393 |
U8 dst [plen * 6 * 3], *dstp = dst; |
394 |
|
395 |
while (path < pend) |
396 |
{ |
397 |
U8 ch = *path; |
398 |
|
399 |
if (ch >= 'a' && ch <= 'z') |
400 |
*dstp++ = *path++; |
401 |
else if (ch >= '0' && ch <= '9') |
402 |
{ |
403 |
STRLEN el, nl = 0; |
404 |
while (*path >= '0' && *path <= '9' && path < pend) |
405 |
path++, nl++; |
406 |
|
407 |
for (el = nl; el < 6; el++) |
408 |
*dstp++ = '0'; |
409 |
|
410 |
memcpy (dstp, path - nl, nl); |
411 |
dstp += nl; |
412 |
} |
413 |
else |
414 |
{ |
415 |
STRLEN cl; |
416 |
to_utf8_fold (path, dstp, &cl); |
417 |
dstp += cl; |
418 |
path += is_utf8_char (path); |
419 |
} |
420 |
} |
421 |
|
422 |
RETVAL = newSVpvn ((const char *)dst, dstp - dst); |
423 |
} |
424 |
OUTPUT: |
425 |
RETVAL |
426 |
|
427 |
GdkPixbuf_noinc * |
428 |
p7_to_pb (int w, int h, SV *src_sv) |
429 |
PROTOTYPE: @ |
430 |
CODE: |
431 |
{ |
432 |
int x, y; |
433 |
guchar *dst, *d; |
434 |
int dstr; |
435 |
guchar *src = (guchar *)SvPVbyte_nolen (src_sv); |
436 |
|
437 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
438 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
439 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
440 |
|
441 |
for (y = 0; y < h; y++) |
442 |
for (d = dst + y * dstr, x = 0; x < w; x++) |
443 |
{ |
444 |
*d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
445 |
*d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
446 |
*d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
447 |
|
448 |
src++; |
449 |
} |
450 |
} |
451 |
OUTPUT: |
452 |
RETVAL |
453 |
|
454 |
############################################################################# |
455 |
|
456 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
457 |
|
458 |
void |
459 |
dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
460 |
CODE: |
461 |
{ |
462 |
int w = gdk_pixbuf_get_width (pb); |
463 |
int h = gdk_pixbuf_get_height (pb); |
464 |
int x, y, i; |
465 |
guchar *dst; |
466 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
467 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
468 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
469 |
|
470 |
a85_init (); |
471 |
|
472 |
for (y = 0; y < h; y++) |
473 |
for (x = 0; x < w; x++) |
474 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
475 |
a85_push (fp, src [x * bpp + y * sstr + i]); |
476 |
|
477 |
a85_finish (fp); |
478 |
} |
479 |
|
480 |
void |
481 |
dump_binary (PerlIO *fp, GdkPixbuf *pb) |
482 |
CODE: |
483 |
{ |
484 |
int w = gdk_pixbuf_get_width (pb); |
485 |
int h = gdk_pixbuf_get_height (pb); |
486 |
int x, y, i; |
487 |
guchar *dst; |
488 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
489 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
490 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
491 |
|
492 |
for (y = 0; y < h; y++) |
493 |
for (x = 0; x < w; x++) |
494 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
495 |
PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
496 |
} |
497 |
|
498 |
############################################################################# |
499 |
|
500 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
501 |
|
502 |
SV * |
503 |
pb_to_hv84 (GdkPixbuf *pb) |
504 |
CODE: |
505 |
{ |
506 |
int w = gdk_pixbuf_get_width (pb); |
507 |
int h = gdk_pixbuf_get_height (pb); |
508 |
int x, y; |
509 |
guchar *dst; |
510 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
511 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
512 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
513 |
|
514 |
RETVAL = newSV (6 * 8 * 12 / 8); |
515 |
SvPOK_only (RETVAL); |
516 |
SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
517 |
|
518 |
dst = (guchar *)SvPVX (RETVAL); |
519 |
|
520 |
/* some primitive error distribution + random dithering */ |
521 |
|
522 |
for (y = 0; y < h; y++) |
523 |
{ |
524 |
guchar *p = src + y * sstr; |
525 |
|
526 |
for (x = 0; x < w; x += 2) |
527 |
{ |
528 |
unsigned int r, g, b, h, s, v, H, V1, V2; |
529 |
|
530 |
if (bpp == 3) |
531 |
r = *p++, g = *p++, b = *p++; |
532 |
else if (bpp == 1) |
533 |
r = g = b = *p++; |
534 |
else |
535 |
abort (); |
536 |
|
537 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
538 |
|
539 |
H = (h * 15 / 255) << 4; |
540 |
V1 = v; |
541 |
|
542 |
if (bpp == 3) |
543 |
r = *p++, g = *p++, b = *p++; |
544 |
else if (bpp == 1) |
545 |
r = g = b = *p++; |
546 |
else |
547 |
abort (); |
548 |
|
549 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
550 |
|
551 |
H |= h * 15 / 255; |
552 |
V2 = v; |
553 |
|
554 |
*dst++ = H; |
555 |
*dst++ = V1; |
556 |
*dst++ = V2; |
557 |
} |
558 |
} |
559 |
} |
560 |
OUTPUT: |
561 |
RETVAL |
562 |
|
563 |
SV * |
564 |
hv84_to_av (unsigned char *hv84) |
565 |
CODE: |
566 |
{ |
567 |
int i = 72 / 3; |
568 |
AV *av = newAV (); |
569 |
|
570 |
RETVAL = (SV *)newRV_noinc ((SV *)av); |
571 |
while (i--) |
572 |
{ |
573 |
int h = *hv84++; |
574 |
int v1 = *hv84++; |
575 |
int v2 = *hv84++; |
576 |
|
577 |
av_push (av, newSViv (v1)); |
578 |
av_push (av, newSViv ((h >> 4) * 255 / 15)); |
579 |
av_push (av, newSViv (v2)); |
580 |
av_push (av, newSViv ((h & 15) * 255 / 15)); |
581 |
} |
582 |
} |
583 |
OUTPUT: |
584 |
RETVAL |
585 |
|
586 |
############################################################################# |
587 |
|
588 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
589 |
|
590 |
SV * |
591 |
make_histograms (SV *ar) |
592 |
CODE: |
593 |
{ |
594 |
int i; |
595 |
AV *av, *result; |
596 |
|
597 |
if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
598 |
croak ("Not an array ref as first argument to make_histogram"); |
599 |
|
600 |
av = (AV *) SvRV (ar); |
601 |
result = newAV (); |
602 |
|
603 |
for (i = 0; i <= av_len (av); ++i) |
604 |
{ |
605 |
const int HISTSIZE = 64; |
606 |
|
607 |
int j; |
608 |
SV *sv = *av_fetch (av, i, 1); |
609 |
STRLEN len; |
610 |
char *buf = SvPVbyte (sv, len); |
611 |
|
612 |
int tmphist[HISTSIZE]; |
613 |
float *hist; |
614 |
|
615 |
SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
616 |
SvPOK_on (histsv); |
617 |
SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
618 |
hist = (float *)SvPVX (histsv); |
619 |
|
620 |
Zero (tmphist, sizeof (tmphist), char); |
621 |
|
622 |
for (j = len; j--; ) |
623 |
{ |
624 |
unsigned int idx |
625 |
= ((*buf & 0xc0) >> 2) |
626 |
| ((*buf & 0x18) >> 1) |
627 |
| (*buf & 0x03); |
628 |
|
629 |
++tmphist[idx]; |
630 |
++buf; |
631 |
} |
632 |
|
633 |
for (j = 0; j < HISTSIZE; ++j) |
634 |
hist[j] = (float)tmphist[j] / (len + 1e-30); |
635 |
|
636 |
av_push (result, histsv); |
637 |
} |
638 |
|
639 |
RETVAL = newRV_noinc ((SV *)result); |
640 |
} |
641 |
OUTPUT: |
642 |
RETVAL |
643 |
|
644 |
|