1 |
#include "EXTERN.h" |
2 |
#include "perl.h" |
3 |
#include "XSUB.h" |
4 |
|
5 |
#include <string.h> |
6 |
#include <setjmp.h> |
7 |
|
8 |
#include <jpeglib.h> |
9 |
#include <gdk-pixbuf/gdk-pixbuf.h> |
10 |
|
11 |
#include <gperl.h> |
12 |
#include <gtk2perl.h> |
13 |
|
14 |
#define IW 80 /* MUST match Schnauer.pm! */ |
15 |
#define IH 60 /* MUST match Schnauer.pm! */ |
16 |
|
17 |
#define RAND (seed = (seed + 7141) * 54773 % 134456) |
18 |
|
19 |
#define LINELENGTH 240 |
20 |
|
21 |
#define ELLIPSIS "\xe2\x80\xa6" |
22 |
|
23 |
struct jpg_err_mgr |
24 |
{ |
25 |
struct jpeg_error_mgr err; |
26 |
jmp_buf setjmp_buffer; |
27 |
}; |
28 |
|
29 |
static void |
30 |
cv_error_exit (j_common_ptr cinfo) |
31 |
{ |
32 |
longjmp (((struct jpg_err_mgr *)cinfo->err)->setjmp_buffer, 99); |
33 |
} |
34 |
|
35 |
static void |
36 |
cv_error_output (j_common_ptr cinfo) |
37 |
{ |
38 |
return; |
39 |
} |
40 |
|
41 |
static void |
42 |
rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
43 |
unsigned int *h, unsigned int *s, unsigned int *v) |
44 |
{ |
45 |
unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
46 |
unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
47 |
unsigned int delta = mx - mn; |
48 |
|
49 |
*v = mx; |
50 |
|
51 |
*s = mx ? delta * 255 / mx : 0; |
52 |
|
53 |
if (delta == 0) |
54 |
*h = 0; |
55 |
else |
56 |
{ |
57 |
if (r == mx) |
58 |
*h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
59 |
else if (g == mx) |
60 |
*h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
61 |
else if (b == mx) |
62 |
*h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
63 |
|
64 |
*h &= 255; |
65 |
} |
66 |
} |
67 |
|
68 |
static guint32 a85_val; |
69 |
static guint a85_cnt; |
70 |
static guchar a85_buf[LINELENGTH], *a85_ptr; |
71 |
|
72 |
static void |
73 |
a85_init (void) |
74 |
{ |
75 |
a85_cnt = 4; |
76 |
a85_ptr = a85_buf; |
77 |
} |
78 |
|
79 |
static void |
80 |
a85_push (PerlIO *fp, guchar c) |
81 |
{ |
82 |
a85_val = a85_val << 8 | c; |
83 |
|
84 |
if (!--a85_cnt) |
85 |
{ |
86 |
a85_cnt = 4; |
87 |
if (a85_val) |
88 |
{ |
89 |
a85_ptr[4] = (a85_val % 85) + 33; a85_val /= 85; |
90 |
a85_ptr[3] = (a85_val % 85) + 33; a85_val /= 85; |
91 |
a85_ptr[2] = (a85_val % 85) + 33; a85_val /= 85; |
92 |
a85_ptr[1] = (a85_val % 85) + 33; a85_val /= 85; |
93 |
a85_ptr[0] = (a85_val ) + 33; |
94 |
|
95 |
a85_ptr += 5; |
96 |
} |
97 |
else |
98 |
*a85_ptr++ = 'z'; |
99 |
|
100 |
if (a85_ptr >= a85_buf + sizeof (a85_buf) - 7) |
101 |
{ |
102 |
*a85_ptr++ = '\n'; |
103 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
104 |
a85_ptr = a85_buf; |
105 |
} |
106 |
} |
107 |
|
108 |
} |
109 |
|
110 |
static void |
111 |
a85_finish (PerlIO *fp) |
112 |
{ |
113 |
while (a85_cnt != 4) |
114 |
a85_push (fp, 0); |
115 |
|
116 |
*a85_ptr++ = '~'; // probably buggy end-marker |
117 |
*a85_ptr++ = '>'; // probably buggy end-marker |
118 |
*a85_ptr++ = '\n'; |
119 |
|
120 |
PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
121 |
} |
122 |
|
123 |
///////////////////////////////////////////////////////////////////////////// |
124 |
|
125 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
126 |
|
127 |
PROTOTYPES: ENABLE |
128 |
|
129 |
# missing in Gtk2 perl module |
130 |
|
131 |
gboolean |
132 |
gdk_net_wm_supports (GdkAtom property) |
133 |
CODE: |
134 |
#if defined(GDK_WINDOWING_X11) && !defined(GDK_MULTIHEAD_SAFE) |
135 |
RETVAL = gdk_net_wm_supports (property); |
136 |
#else |
137 |
RETVAL = 0; |
138 |
#endif |
139 |
OUTPUT: |
140 |
RETVAL |
141 |
|
142 |
GdkPixbuf_noinc * |
143 |
transpose (GdkPixbuf *pb) |
144 |
CODE: |
145 |
{ |
146 |
int w = gdk_pixbuf_get_width (pb); |
147 |
int h = gdk_pixbuf_get_height (pb); |
148 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
149 |
int x, y, i; |
150 |
guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
151 |
int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
152 |
|
153 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
154 |
|
155 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
156 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
157 |
|
158 |
for (y = 0; y < h; y++) |
159 |
for (x = 0; x < w; x++) |
160 |
for (i = 0; i < bpp; i++) |
161 |
dst[y * bpp + x * dstr + i] = src[x * bpp + y * sstr + i]; |
162 |
} |
163 |
OUTPUT: |
164 |
RETVAL |
165 |
|
166 |
GdkPixbuf_noinc * |
167 |
flop (GdkPixbuf *pb) |
168 |
CODE: |
169 |
{ |
170 |
int w = gdk_pixbuf_get_width (pb); |
171 |
int h = gdk_pixbuf_get_height (pb); |
172 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
173 |
int x, y, i; |
174 |
guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
175 |
int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
176 |
|
177 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
178 |
|
179 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
180 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
181 |
|
182 |
for (y = 0; y < h; y++) |
183 |
for (x = 0; x < w; x++) |
184 |
for (i = 0; i < bpp; i++) |
185 |
dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
186 |
} |
187 |
OUTPUT: |
188 |
RETVAL |
189 |
|
190 |
GdkPixbuf_noinc * |
191 |
load_jpeg (char *path, int thumbnail=0) |
192 |
CODE: |
193 |
{ |
194 |
struct jpeg_decompress_struct cinfo; |
195 |
struct jpg_err_mgr jerr; |
196 |
guchar *data; |
197 |
int rs; |
198 |
FILE *fp; |
199 |
volatile GdkPixbuf *pb = 0; |
200 |
RETVAL = 0; |
201 |
|
202 |
if (!(fp = fopen (path, "rb"))) |
203 |
XSRETURN_UNDEF; |
204 |
|
205 |
cinfo.err = jpeg_std_error (&jerr.err); |
206 |
|
207 |
jerr.err.error_exit = cv_error_exit; |
208 |
jerr.err.output_message = cv_error_output; |
209 |
|
210 |
if ((rs = setjmp (jerr.setjmp_buffer))) |
211 |
{ |
212 |
fclose (fp); |
213 |
jpeg_destroy_decompress (&cinfo); |
214 |
|
215 |
if (pb) |
216 |
g_object_unref ((gpointer)pb); |
217 |
|
218 |
XSRETURN_UNDEF; |
219 |
} |
220 |
|
221 |
jpeg_create_decompress (&cinfo); |
222 |
|
223 |
jpeg_stdio_src (&cinfo, fp); |
224 |
jpeg_read_header (&cinfo, TRUE); |
225 |
|
226 |
cinfo.dct_method = JDCT_DEFAULT; |
227 |
cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
228 |
cinfo.do_block_smoothing = FALSE; |
229 |
cinfo.out_color_space = JCS_RGB; |
230 |
cinfo.quantize_colors = FALSE; |
231 |
|
232 |
cinfo.scale_num = 1; |
233 |
cinfo.scale_denom = 1; |
234 |
|
235 |
jpeg_calc_output_dimensions (&cinfo); |
236 |
|
237 |
if (thumbnail) |
238 |
{ |
239 |
cinfo.dct_method = JDCT_FASTEST; |
240 |
cinfo.do_fancy_upsampling = FALSE; |
241 |
|
242 |
while (cinfo.scale_denom < 8 |
243 |
&& cinfo.output_width >= IW*4 |
244 |
&& cinfo.output_height >= IH*4) |
245 |
{ |
246 |
cinfo.scale_denom <<= 1; |
247 |
jpeg_calc_output_dimensions (&cinfo); |
248 |
} |
249 |
} |
250 |
|
251 |
pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
252 |
if (!RETVAL) |
253 |
longjmp (jerr.setjmp_buffer, 2); |
254 |
|
255 |
data = gdk_pixbuf_get_pixels (RETVAL); |
256 |
rs = gdk_pixbuf_get_rowstride (RETVAL); |
257 |
|
258 |
if (cinfo.output_components != 3) |
259 |
longjmp (jerr.setjmp_buffer, 3); |
260 |
|
261 |
jpeg_start_decompress (&cinfo); |
262 |
|
263 |
while (cinfo.output_scanline < cinfo.output_height) |
264 |
{ |
265 |
int remaining = cinfo.output_height - cinfo.output_scanline; |
266 |
JSAMPROW rp[4]; |
267 |
|
268 |
rp [0] = data + cinfo.output_scanline * rs; |
269 |
rp [1] = (guchar *)rp [0] + rs; |
270 |
rp [2] = (guchar *)rp [1] + rs; |
271 |
rp [3] = (guchar *)rp [2] + rs; |
272 |
|
273 |
jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
274 |
} |
275 |
|
276 |
jpeg_finish_decompress (&cinfo); |
277 |
fclose (fp); |
278 |
jpeg_destroy_decompress (&cinfo); |
279 |
} |
280 |
OUTPUT: |
281 |
RETVAL |
282 |
|
283 |
############################################################################# |
284 |
|
285 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
286 |
|
287 |
SV * |
288 |
foldcase (SV *pathsv) |
289 |
PROTOTYPE: $ |
290 |
CODE: |
291 |
{ |
292 |
STRLEN plen; |
293 |
U8 *path = SvPVutf8 (pathsv, plen); |
294 |
U8 *pend = path + plen; |
295 |
U8 dst [plen * 6 * 3], *dstp = dst; |
296 |
|
297 |
while (path < pend) |
298 |
{ |
299 |
U8 ch = *path; |
300 |
|
301 |
if (ch >= 'a' && ch <= 'z') |
302 |
*dstp++ = *path++; |
303 |
else if (ch >= '0' && ch <= '9') |
304 |
{ |
305 |
STRLEN el, nl = 0; |
306 |
while (*path >= '0' && *path <= '9' && path < pend) |
307 |
path++, nl++; |
308 |
|
309 |
for (el = nl; el < 6; el++) |
310 |
*dstp++ = '0'; |
311 |
|
312 |
memcpy (dstp, path - nl, nl); |
313 |
dstp += nl; |
314 |
} |
315 |
else |
316 |
{ |
317 |
STRLEN cl; |
318 |
to_utf8_fold (path, dstp, &cl); |
319 |
dstp += cl; |
320 |
path += is_utf8_char (path); |
321 |
} |
322 |
} |
323 |
|
324 |
RETVAL = newSVpvn (dst, dstp - dst); |
325 |
} |
326 |
OUTPUT: |
327 |
RETVAL |
328 |
|
329 |
GdkPixbuf_noinc * |
330 |
p7_to_pb (int w, int h, guchar *src) |
331 |
PROTOTYPE: @ |
332 |
CODE: |
333 |
{ |
334 |
int x, y; |
335 |
guchar *dst, *d; |
336 |
int dstr; |
337 |
|
338 |
RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, w, h); |
339 |
dst = gdk_pixbuf_get_pixels (RETVAL); |
340 |
dstr = gdk_pixbuf_get_rowstride (RETVAL); |
341 |
|
342 |
for (y = 0; y < h; y++) |
343 |
for (d = dst + y * dstr, x = 0; x < w; x++) |
344 |
{ |
345 |
*d++ = (((*src >> 5) & 7) * 255 + 4) / 7; |
346 |
*d++ = (((*src >> 2) & 7) * 255 + 4) / 7; |
347 |
*d++ = (((*src >> 0) & 3) * 255 + 2) / 3; |
348 |
|
349 |
src++; |
350 |
} |
351 |
} |
352 |
OUTPUT: |
353 |
RETVAL |
354 |
|
355 |
SV * |
356 |
pb_to_p7 (GdkPixbuf *pb) |
357 |
CODE: |
358 |
{ |
359 |
int w = gdk_pixbuf_get_width (pb); |
360 |
int h = gdk_pixbuf_get_height (pb); |
361 |
int x, y; |
362 |
guchar *dst; |
363 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
364 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
365 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
366 |
int Er[IW], Eg[IW], Eb[IW]; |
367 |
int seed = 77; |
368 |
|
369 |
RETVAL = newSV (w * h); |
370 |
SvPOK_only (RETVAL); |
371 |
SvCUR_set (RETVAL, w * h); |
372 |
|
373 |
dst = SvPVX (RETVAL); |
374 |
|
375 |
memset (Er, 0, sizeof (int) * IW); |
376 |
memset (Eg, 0, sizeof (int) * IW); |
377 |
memset (Eb, 0, sizeof (int) * IW); |
378 |
|
379 |
/* some primitive error distribution + random dithering */ |
380 |
|
381 |
for (y = 0; y < h; y++) |
382 |
{ |
383 |
int er = 0, eg = 0, eb = 0; |
384 |
|
385 |
for (x = 0; x < w; x++) |
386 |
{ |
387 |
int r, g, b; |
388 |
guchar *p = src + x * bpp + y * sstr; |
389 |
|
390 |
r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255; |
391 |
g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255; |
392 |
b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255; |
393 |
|
394 |
r = r > 7 ? 7 : r < 0 ? 0 : r; |
395 |
g = g > 7 ? 7 : g < 0 ? 0 : g; |
396 |
b = b > 3 ? 3 : b < 0 ? 0 : b; |
397 |
|
398 |
er += p[0] - (r * 255 + 4) / 7; |
399 |
eg += p[1] - (g * 255 + 4) / 7; |
400 |
eb += p[2] - (b * 255 + 2) / 3; |
401 |
|
402 |
Er[x] = er >> 1; er -= (er + 1) >> 1; |
403 |
Eg[x] = eg >> 1; eg -= (eg + 1) >> 1; |
404 |
Eb[x] = eb >> 1; eb -= (eb + 1) >> 1; |
405 |
|
406 |
*dst++ = r << 5 | g << 2 | b; |
407 |
} |
408 |
} |
409 |
} |
410 |
OUTPUT: |
411 |
RETVAL |
412 |
|
413 |
############################################################################# |
414 |
|
415 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
416 |
|
417 |
void |
418 |
dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
419 |
CODE: |
420 |
{ |
421 |
int w = gdk_pixbuf_get_width (pb); |
422 |
int h = gdk_pixbuf_get_height (pb); |
423 |
int x, y, i; |
424 |
guchar *dst; |
425 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
426 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
427 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
428 |
|
429 |
a85_init (); |
430 |
|
431 |
for (y = 0; y < h; y++) |
432 |
for (x = 0; x < w; x++) |
433 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
434 |
a85_push (fp, src [x * bpp + y * sstr + i]); |
435 |
|
436 |
a85_finish (fp); |
437 |
} |
438 |
|
439 |
void |
440 |
dump_binary (PerlIO *fp, GdkPixbuf *pb) |
441 |
CODE: |
442 |
{ |
443 |
int w = gdk_pixbuf_get_width (pb); |
444 |
int h = gdk_pixbuf_get_height (pb); |
445 |
int x, y, i; |
446 |
guchar *dst; |
447 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
448 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
449 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
450 |
|
451 |
for (y = 0; y < h; y++) |
452 |
for (x = 0; x < w; x++) |
453 |
for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
454 |
PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
455 |
} |
456 |
|
457 |
############################################################################# |
458 |
|
459 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
460 |
|
461 |
SV * |
462 |
pb_to_hv84 (GdkPixbuf *pb) |
463 |
CODE: |
464 |
{ |
465 |
int w = gdk_pixbuf_get_width (pb); |
466 |
int h = gdk_pixbuf_get_height (pb); |
467 |
int x, y; |
468 |
guchar *dst; |
469 |
int bpp = gdk_pixbuf_get_n_channels (pb); |
470 |
guchar *src = gdk_pixbuf_get_pixels (pb); |
471 |
int sstr = gdk_pixbuf_get_rowstride (pb); |
472 |
|
473 |
RETVAL = newSV (6 * 8 * 12 / 8); |
474 |
SvPOK_only (RETVAL); |
475 |
SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
476 |
|
477 |
dst = SvPVX (RETVAL); |
478 |
|
479 |
/* some primitive error distribution + random dithering */ |
480 |
|
481 |
for (y = 0; y < h; y++) |
482 |
{ |
483 |
guchar *p = src + y * sstr; |
484 |
|
485 |
for (x = 0; x < w; x += 2) |
486 |
{ |
487 |
unsigned int r, g, b, h, s, v, H, V1, V2; |
488 |
|
489 |
if (bpp == 3) |
490 |
r = *p++, g = *p++, b = *p++; |
491 |
else if (bpp == 1) |
492 |
r = g = b = *p++; |
493 |
else |
494 |
abort (); |
495 |
|
496 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
497 |
|
498 |
H = (h * 15 / 255) << 4; |
499 |
V1 = v; |
500 |
|
501 |
if (bpp == 3) |
502 |
r = *p++, g = *p++, b = *p++; |
503 |
else if (bpp == 1) |
504 |
r = g = b = *p++; |
505 |
else |
506 |
abort (); |
507 |
|
508 |
rgb_to_hsv (r, g, b, &h, &s, &v); |
509 |
|
510 |
H |= h * 15 / 255; |
511 |
V2 = v; |
512 |
|
513 |
*dst++ = H; |
514 |
*dst++ = V1; |
515 |
*dst++ = V2; |
516 |
} |
517 |
} |
518 |
} |
519 |
OUTPUT: |
520 |
RETVAL |
521 |
|
522 |
SV * |
523 |
hv84_to_av (unsigned char *hv84) |
524 |
CODE: |
525 |
{ |
526 |
int i = 72 / 3; |
527 |
AV *av = newAV (); |
528 |
|
529 |
RETVAL = (SV *)newRV_noinc ((SV *)av); |
530 |
while (i--) |
531 |
{ |
532 |
int h = *hv84++; |
533 |
int v1 = *hv84++; |
534 |
int v2 = *hv84++; |
535 |
|
536 |
av_push (av, newSViv (v1)); |
537 |
av_push (av, newSViv ((h >> 4) * 255 / 15)); |
538 |
av_push (av, newSViv (v2)); |
539 |
av_push (av, newSViv ((h & 15) * 255 / 15)); |
540 |
} |
541 |
} |
542 |
OUTPUT: |
543 |
RETVAL |
544 |
|
545 |
############################################################################# |
546 |
|
547 |
MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
548 |
|
549 |
SV * |
550 |
make_histograms (SV *ar) |
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CODE: |
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{ |
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int i; |
554 |
AV *av, *result; |
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|
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if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
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croak ("Not an array ref as first argument to make_histogram"); |
558 |
|
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av = (AV *) SvRV (ar); |
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result = newAV (); |
561 |
|
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for (i = 0; i <= av_len (av); ++i) |
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{ |
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const int HISTSIZE = 64; |
565 |
|
566 |
int j; |
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SV *sv = *av_fetch (av, i, 1); |
568 |
STRLEN len; |
569 |
char *buf = SvPVbyte (sv, len); |
570 |
|
571 |
int tmphist[HISTSIZE]; |
572 |
float *hist; |
573 |
|
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SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
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SvPOK_on (histsv); |
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SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
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hist = (float *)SvPVX (histsv); |
578 |
|
579 |
Zero (tmphist, sizeof (tmphist), char); |
580 |
|
581 |
for (j = len; j--; ) |
582 |
{ |
583 |
unsigned int idx |
584 |
= ((*buf & 0xc0) >> 2) |
585 |
| ((*buf & 0x18) >> 1) |
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| (*buf & 0x03); |
587 |
|
588 |
++tmphist[idx]; |
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++buf; |
590 |
} |
591 |
|
592 |
for (j = 0; j < HISTSIZE; ++j) |
593 |
hist[j] = (float)tmphist[j] / (len + 1e-30); |
594 |
|
595 |
av_push (result, histsv); |
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} |
597 |
|
598 |
RETVAL = newRV_noinc ((SV *)result); |
599 |
} |
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OUTPUT: |
601 |
RETVAL |
602 |
|
603 |
|