1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
|
|
5 | #include <string.h> |
|
|
6 | #include <setjmp.h> |
|
|
7 | |
|
|
8 | #include <jpeglib.h> |
5 | #include <gdk-pixbuf/gdk-pixbuf.h> |
9 | #include <gdk-pixbuf/gdk-pixbuf.h> |
6 | |
10 | |
7 | #include <gperl.h> |
11 | #include <gperl.h> |
8 | #include <gtk2perl.h> |
12 | #include <gtk2perl.h> |
9 | |
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 | |
10 | static guint32 a85_val; |
68 | static guint32 a85_val; |
11 | static guint a85_cnt; |
69 | static guint a85_cnt; |
12 | static guchar a85_buf[80], *a85_ptr; |
70 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
13 | |
71 | |
14 | static void |
72 | static void |
15 | a85_init (void) |
73 | a85_init (void) |
16 | { |
74 | { |
17 | a85_cnt = 4; |
75 | a85_cnt = 4; |
… | |
… | |
47 | } |
105 | } |
48 | } |
106 | } |
49 | |
107 | |
50 | } |
108 | } |
51 | |
109 | |
|
|
110 | static void |
52 | a85_finish (PerlIO *fp) |
111 | a85_finish (PerlIO *fp) |
53 | { |
112 | { |
54 | while (a85_cnt != 4) |
113 | while (a85_cnt != 4) |
55 | a85_push (fp, 0); |
114 | a85_push (fp, 0); |
56 | |
115 | |
… | |
… | |
59 | *a85_ptr++ = '\n'; |
118 | *a85_ptr++ = '\n'; |
60 | |
119 | |
61 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
120 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
62 | } |
121 | } |
63 | |
122 | |
|
|
123 | ///////////////////////////////////////////////////////////////////////////// |
|
|
124 | |
64 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
125 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
65 | |
126 | |
66 | PROTOTYPES: ENABLE |
127 | PROTOTYPES: ENABLE |
67 | |
128 | |
68 | GdkPixbuf_noinc * |
129 | GdkPixbuf_noinc * |
69 | transpose (GdkPixbuf *pb) |
130 | transpose (GdkPixbuf *pb) |
70 | CODE: |
131 | CODE: |
71 | { |
132 | { |
72 | int w = gdk_pixbuf_get_width (pb); |
133 | int w = gdk_pixbuf_get_width (pb); |
73 | int h = gdk_pixbuf_get_height (pb); |
134 | int h = gdk_pixbuf_get_height (pb); |
74 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
135 | int bpp = gdk_pixbuf_get_n_channels (pb); |
75 | int x, y, i; |
136 | int x, y, i; |
76 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
137 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
77 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
138 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
78 | |
139 | |
79 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
140 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
… | |
… | |
93 | flop (GdkPixbuf *pb) |
154 | flop (GdkPixbuf *pb) |
94 | CODE: |
155 | CODE: |
95 | { |
156 | { |
96 | int w = gdk_pixbuf_get_width (pb); |
157 | int w = gdk_pixbuf_get_width (pb); |
97 | int h = gdk_pixbuf_get_height (pb); |
158 | int h = gdk_pixbuf_get_height (pb); |
98 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
159 | int bpp = gdk_pixbuf_get_n_channels (pb); |
99 | int x, y, i; |
160 | int x, y, i; |
100 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
161 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
101 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
162 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
102 | |
163 | |
103 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
164 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
… | |
… | |
111 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
172 | dst[(w - 1 - x) * bpp + y * dstr + i] = src[x * bpp + y * sstr + i]; |
112 | } |
173 | } |
113 | OUTPUT: |
174 | OUTPUT: |
114 | RETVAL |
175 | RETVAL |
115 | |
176 | |
|
|
177 | GdkPixbuf_noinc * |
|
|
178 | load_jpeg (char *path, int thumbnail=0) |
|
|
179 | CODE: |
|
|
180 | { |
|
|
181 | struct jpeg_decompress_struct cinfo; |
|
|
182 | struct jpg_err_mgr jerr; |
|
|
183 | guchar *data; |
|
|
184 | int rs; |
|
|
185 | FILE *fp; |
|
|
186 | volatile GdkPixbuf *pb = 0; |
|
|
187 | RETVAL = 0; |
|
|
188 | |
|
|
189 | if (!(fp = fopen (path, "rb"))) |
|
|
190 | XSRETURN_UNDEF; |
|
|
191 | |
|
|
192 | cinfo.err = jpeg_std_error (&jerr.err); |
|
|
193 | |
|
|
194 | jerr.err.error_exit = cv_error_exit; |
|
|
195 | jerr.err.output_message = cv_error_output; |
|
|
196 | |
|
|
197 | if ((rs = setjmp (jerr.setjmp_buffer))) |
|
|
198 | { |
|
|
199 | fclose (fp); |
|
|
200 | jpeg_destroy_decompress (&cinfo); |
|
|
201 | |
|
|
202 | if (pb) |
|
|
203 | g_object_unref ((gpointer)pb); |
|
|
204 | |
|
|
205 | XSRETURN_UNDEF; |
|
|
206 | } |
|
|
207 | |
|
|
208 | jpeg_create_decompress (&cinfo); |
|
|
209 | |
|
|
210 | jpeg_stdio_src (&cinfo, fp); |
|
|
211 | jpeg_read_header (&cinfo, TRUE); |
|
|
212 | |
|
|
213 | cinfo.dct_method = JDCT_DEFAULT; |
|
|
214 | cinfo.do_fancy_upsampling = FALSE; /* worse quality, but nobody compained so far, and gdk-pixbuf does the same */ |
|
|
215 | cinfo.do_block_smoothing = FALSE; |
|
|
216 | cinfo.out_color_space = JCS_RGB; |
|
|
217 | cinfo.quantize_colors = FALSE; |
|
|
218 | |
|
|
219 | cinfo.scale_num = 1; |
|
|
220 | cinfo.scale_denom = 1; |
|
|
221 | |
|
|
222 | jpeg_calc_output_dimensions (&cinfo); |
|
|
223 | |
|
|
224 | if (thumbnail) |
|
|
225 | { |
|
|
226 | cinfo.dct_method = JDCT_FASTEST; |
|
|
227 | cinfo.do_fancy_upsampling = FALSE; |
|
|
228 | |
|
|
229 | while (cinfo.scale_denom < 8 |
|
|
230 | && cinfo.output_width >= IW*4 |
|
|
231 | && cinfo.output_height >= IH*4) |
|
|
232 | { |
|
|
233 | cinfo.scale_denom <<= 1; |
|
|
234 | jpeg_calc_output_dimensions (&cinfo); |
|
|
235 | } |
|
|
236 | } |
|
|
237 | |
|
|
238 | pb = RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, 0, 8, cinfo.output_width, cinfo.output_height); |
|
|
239 | if (!RETVAL) |
|
|
240 | longjmp (jerr.setjmp_buffer, 2); |
|
|
241 | |
|
|
242 | data = gdk_pixbuf_get_pixels (RETVAL); |
|
|
243 | rs = gdk_pixbuf_get_rowstride (RETVAL); |
|
|
244 | |
|
|
245 | if (cinfo.output_components != 3) |
|
|
246 | longjmp (jerr.setjmp_buffer, 3); |
|
|
247 | |
|
|
248 | jpeg_start_decompress (&cinfo); |
|
|
249 | |
|
|
250 | while (cinfo.output_scanline < cinfo.output_height) |
|
|
251 | { |
|
|
252 | int remaining = cinfo.output_height - cinfo.output_scanline; |
|
|
253 | JSAMPROW rp[4]; |
|
|
254 | |
|
|
255 | rp [0] = data + cinfo.output_scanline * rs; |
|
|
256 | rp [1] = (guchar *)rp [0] + rs; |
|
|
257 | rp [2] = (guchar *)rp [1] + rs; |
|
|
258 | rp [3] = (guchar *)rp [2] + rs; |
|
|
259 | |
|
|
260 | jpeg_read_scanlines (&cinfo, rp, remaining < 4 ? remaining : 4); |
|
|
261 | } |
|
|
262 | |
|
|
263 | jpeg_finish_decompress (&cinfo); |
|
|
264 | fclose (fp); |
|
|
265 | jpeg_destroy_decompress (&cinfo); |
|
|
266 | } |
|
|
267 | OUTPUT: |
|
|
268 | RETVAL |
|
|
269 | |
|
|
270 | ############################################################################# |
|
|
271 | |
116 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
272 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Schnauzer |
|
|
273 | |
|
|
274 | SV * |
|
|
275 | foldcase (SV *pathsv) |
|
|
276 | PROTOTYPE: $ |
|
|
277 | CODE: |
|
|
278 | { |
|
|
279 | STRLEN plen; |
|
|
280 | U8 *path = SvPVutf8 (pathsv, plen); |
|
|
281 | U8 *pend = path + plen; |
|
|
282 | U8 dst [plen * 6 * 3], *dstp = dst; |
|
|
283 | |
|
|
284 | while (path < pend) |
|
|
285 | { |
|
|
286 | U8 ch = *path; |
|
|
287 | |
|
|
288 | if (ch >= 'a' && ch <= 'z') |
|
|
289 | *dstp++ = *path++; |
|
|
290 | else if (ch >= '0' && ch <= '9') |
|
|
291 | { |
|
|
292 | STRLEN el, nl = 0; |
|
|
293 | while (*path >= '0' && *path <= '9' && path < pend) |
|
|
294 | path++, nl++; |
|
|
295 | |
|
|
296 | for (el = nl; el < 6; el++) |
|
|
297 | *dstp++ = '0'; |
|
|
298 | |
|
|
299 | memcpy (dstp, path - nl, nl); |
|
|
300 | dstp += nl; |
|
|
301 | } |
|
|
302 | else |
|
|
303 | { |
|
|
304 | STRLEN cl; |
|
|
305 | to_utf8_fold (path, dstp, &cl); |
|
|
306 | dstp += cl; |
|
|
307 | path += is_utf8_char (path); |
|
|
308 | } |
|
|
309 | } |
|
|
310 | |
|
|
311 | RETVAL = newSVpvn (dst, dstp - dst); |
|
|
312 | } |
|
|
313 | OUTPUT: |
|
|
314 | RETVAL |
117 | |
315 | |
118 | GdkPixbuf_noinc * |
316 | GdkPixbuf_noinc * |
119 | p7_to_pb (int w, int h, guchar *src) |
317 | p7_to_pb (int w, int h, guchar *src) |
|
|
318 | PROTOTYPE: @ |
120 | CODE: |
319 | CODE: |
121 | { |
320 | { |
122 | int x, y; |
321 | int x, y; |
123 | guchar *dst, *d; |
322 | guchar *dst, *d; |
124 | int dstr; |
323 | int dstr; |
… | |
… | |
146 | { |
345 | { |
147 | int w = gdk_pixbuf_get_width (pb); |
346 | int w = gdk_pixbuf_get_width (pb); |
148 | int h = gdk_pixbuf_get_height (pb); |
347 | int h = gdk_pixbuf_get_height (pb); |
149 | int x, y; |
348 | int x, y; |
150 | guchar *dst; |
349 | guchar *dst; |
151 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
350 | int bpp = gdk_pixbuf_get_n_channels (pb); |
152 | guchar *src = gdk_pixbuf_get_pixels (pb); |
351 | guchar *src = gdk_pixbuf_get_pixels (pb); |
153 | int sstr = gdk_pixbuf_get_rowstride (pb); |
352 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
353 | int Er[IW], Eg[IW], Eb[IW]; |
|
|
354 | int seed = 77; |
154 | |
355 | |
155 | RETVAL = newSV (w * h); |
356 | RETVAL = newSV (w * h); |
156 | SvPOK_only (RETVAL); |
357 | SvPOK_only (RETVAL); |
157 | SvCUR_set (RETVAL, w * h); |
358 | SvCUR_set (RETVAL, w * h); |
158 | |
359 | |
159 | dst = SvPVX (RETVAL); |
360 | dst = SvPVX (RETVAL); |
160 | |
361 | |
|
|
362 | memset (Er, 0, sizeof (int) * IW); |
|
|
363 | memset (Eg, 0, sizeof (int) * IW); |
|
|
364 | memset (Eb, 0, sizeof (int) * IW); |
|
|
365 | |
|
|
366 | /* some primitive error distribution + random dithering */ |
|
|
367 | |
161 | for (y = 0; y < h; y++) |
368 | for (y = 0; y < h; y++) |
162 | { |
369 | { |
163 | /* use a very primitive form of error distribution. */ |
|
|
164 | int er = 0, eg = 0, eb = 0; |
370 | int er = 0, eg = 0, eb = 0; |
165 | |
371 | |
166 | for (x = 0; x < w; x++) |
372 | for (x = 0; x < w; x++) |
167 | { |
373 | { |
168 | int r, g, b; |
374 | int r, g, b; |
169 | guchar *p = src + x * bpp + y * sstr; |
375 | guchar *p = src + x * bpp + y * sstr; |
170 | |
376 | |
171 | r = ((p[0] + er) * 7 + 128) / 255; |
377 | r = ((p[0] + er + Er[x]) * 7 + (RAND & 127) + 64) / 255; |
172 | g = ((p[1] + eg) * 7 + 128) / 255; |
378 | g = ((p[1] + eg + Eg[x]) * 7 + (RAND & 127) + 64) / 255; |
173 | b = ((p[2] + eb) * 3 + 128) / 255; |
379 | b = ((p[2] + eb + Eb[x]) * 3 + (RAND & 127) + 64) / 255; |
174 | |
380 | |
175 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
381 | r = r > 7 ? 7 : r < 0 ? 0 : r; |
176 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
382 | g = g > 7 ? 7 : g < 0 ? 0 : g; |
177 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
383 | b = b > 3 ? 3 : b < 0 ? 0 : b; |
178 | |
384 | |
179 | er += p[0] - (r * 255 + 4) / 7; |
385 | er += p[0] - (r * 255 + 4) / 7; |
180 | eg += p[1] - (g * 255 + 4) / 7; |
386 | eg += p[1] - (g * 255 + 4) / 7; |
181 | eb += p[2] - (b * 255 + 2) / 3; |
387 | eb += p[2] - (b * 255 + 2) / 3; |
182 | |
388 | |
|
|
389 | Er[x] = er >> 1; er -= (er + 1) >> 1; |
|
|
390 | Eg[x] = eg >> 1; eg -= (eg + 1) >> 1; |
|
|
391 | Eb[x] = eb >> 1; eb -= (eb + 1) >> 1; |
|
|
392 | |
183 | *dst++ = r << 5 | g << 2 | b; |
393 | *dst++ = r << 5 | g << 2 | b; |
184 | } |
394 | } |
185 | } |
395 | } |
186 | } |
396 | } |
187 | OUTPUT: |
397 | OUTPUT: |
188 | RETVAL |
398 | RETVAL |
189 | |
399 | |
|
|
400 | ############################################################################# |
|
|
401 | |
190 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
402 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
191 | |
403 | |
192 | void |
404 | void |
193 | dump_pb (PerlIO *fp, GdkPixbuf *pb) |
405 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
194 | CODE: |
406 | CODE: |
195 | { |
407 | { |
196 | int w = gdk_pixbuf_get_width (pb); |
408 | int w = gdk_pixbuf_get_width (pb); |
197 | int h = gdk_pixbuf_get_height (pb); |
409 | int h = gdk_pixbuf_get_height (pb); |
198 | int x, y, i; |
410 | int x, y, i; |
199 | guchar *dst; |
411 | guchar *dst; |
200 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
412 | int bpp = gdk_pixbuf_get_n_channels (pb); |
201 | guchar *src = gdk_pixbuf_get_pixels (pb); |
413 | guchar *src = gdk_pixbuf_get_pixels (pb); |
202 | int sstr = gdk_pixbuf_get_rowstride (pb); |
414 | int sstr = gdk_pixbuf_get_rowstride (pb); |
203 | |
415 | |
204 | a85_init (); |
416 | a85_init (); |
205 | |
417 | |
206 | for (y = 0; y < h; y++) |
418 | for (y = 0; y < h; y++) |
207 | for (x = 0; x < w; x++) |
419 | for (x = 0; x < w; x++) |
208 | for (i = 0; i < 3; i++) |
420 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
209 | a85_push (fp, src [x * bpp + y * sstr + i]); |
421 | a85_push (fp, src [x * bpp + y * sstr + i]); |
210 | |
422 | |
211 | a85_finish (fp); |
423 | a85_finish (fp); |
212 | } |
424 | } |
213 | |
425 | |
|
|
426 | void |
|
|
427 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
|
428 | CODE: |
|
|
429 | { |
|
|
430 | int w = gdk_pixbuf_get_width (pb); |
|
|
431 | int h = gdk_pixbuf_get_height (pb); |
|
|
432 | int x, y, i; |
|
|
433 | guchar *dst; |
|
|
434 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
435 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
436 | int sstr = gdk_pixbuf_get_rowstride (pb); |
214 | |
437 | |
|
|
438 | for (y = 0; y < h; y++) |
|
|
439 | for (x = 0; x < w; x++) |
|
|
440 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
|
|
441 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
|
442 | } |
215 | |
443 | |
|
|
444 | ############################################################################# |
216 | |
445 | |
|
|
446 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
|
|
447 | |
|
|
448 | SV * |
|
|
449 | pb_to_hv84 (GdkPixbuf *pb) |
|
|
450 | CODE: |
|
|
451 | { |
|
|
452 | int w = gdk_pixbuf_get_width (pb); |
|
|
453 | int h = gdk_pixbuf_get_height (pb); |
|
|
454 | int x, y; |
|
|
455 | guchar *dst; |
|
|
456 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
457 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
|
458 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
|
459 | |
|
|
460 | RETVAL = newSV (6 * 8 * 12 / 8); |
|
|
461 | SvPOK_only (RETVAL); |
|
|
462 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
|
|
463 | |
|
|
464 | dst = SvPVX (RETVAL); |
|
|
465 | |
|
|
466 | /* some primitive error distribution + random dithering */ |
|
|
467 | |
|
|
468 | for (y = 0; y < h; y++) |
|
|
469 | { |
|
|
470 | guchar *p = src + y * sstr; |
|
|
471 | |
|
|
472 | for (x = 0; x < w; x += 2) |
|
|
473 | { |
|
|
474 | unsigned int r, g, b, h, s, v, H, V1, V2; |
|
|
475 | |
|
|
476 | if (bpp == 3) |
|
|
477 | r = *p++, g = *p++, b = *p++; |
|
|
478 | else if (bpp == 1) |
|
|
479 | r = g = b = *p++; |
|
|
480 | else |
|
|
481 | abort (); |
|
|
482 | |
|
|
483 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
484 | |
|
|
485 | H = (h * 15 / 255) << 4; |
|
|
486 | V1 = v; |
|
|
487 | |
|
|
488 | if (bpp == 3) |
|
|
489 | r = *p++, g = *p++, b = *p++; |
|
|
490 | else if (bpp == 1) |
|
|
491 | r = g = b = *p++; |
|
|
492 | else |
|
|
493 | abort (); |
|
|
494 | |
|
|
495 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
496 | |
|
|
497 | H |= h * 15 / 255; |
|
|
498 | V2 = v; |
|
|
499 | |
|
|
500 | *dst++ = H; |
|
|
501 | *dst++ = V1; |
|
|
502 | *dst++ = V2; |
|
|
503 | } |
|
|
504 | } |
|
|
505 | } |
|
|
506 | OUTPUT: |
|
|
507 | RETVAL |
|
|
508 | |
|
|
509 | SV * |
|
|
510 | hv84_to_av (unsigned char *hv84) |
|
|
511 | CODE: |
|
|
512 | { |
|
|
513 | int i = 72 / 3; |
|
|
514 | AV *av = newAV (); |
|
|
515 | |
|
|
516 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
|
517 | while (i--) |
|
|
518 | { |
|
|
519 | int h = *hv84++; |
|
|
520 | int v1 = *hv84++; |
|
|
521 | int v2 = *hv84++; |
|
|
522 | |
|
|
523 | av_push (av, newSViv (v1)); |
|
|
524 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
|
525 | av_push (av, newSViv (v2)); |
|
|
526 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
527 | } |
|
|
528 | } |
|
|
529 | OUTPUT: |
|
|
530 | RETVAL |
|
|
531 | |
|
|
532 | ############################################################################# |
|
|
533 | |
|
|
534 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::Plugin::RCluster |
|
|
535 | |
|
|
536 | SV * |
|
|
537 | make_histograms (SV *ar) |
|
|
538 | CODE: |
|
|
539 | { |
|
|
540 | int i; |
|
|
541 | AV *av, *result; |
|
|
542 | |
|
|
543 | if (!SvROK (ar) || SvTYPE (SvRV (ar)) != SVt_PVAV) |
|
|
544 | croak ("Not an array ref as first argument to make_histogram"); |
|
|
545 | |
|
|
546 | av = (AV *) SvRV (ar); |
|
|
547 | result = newAV (); |
|
|
548 | |
|
|
549 | for (i = 0; i <= av_len (av); ++i) |
|
|
550 | { |
|
|
551 | const int HISTSIZE = 64; |
|
|
552 | |
|
|
553 | int j; |
|
|
554 | SV *sv = *av_fetch (av, i, 1); |
|
|
555 | STRLEN len; |
|
|
556 | char *buf = SvPVbyte (sv, len); |
|
|
557 | |
|
|
558 | int tmphist[HISTSIZE]; |
|
|
559 | float *hist; |
|
|
560 | |
|
|
561 | SV *histsv = newSV (HISTSIZE * sizeof (float) + 1); |
|
|
562 | SvPOK_on (histsv); |
|
|
563 | SvCUR_set (histsv, HISTSIZE * sizeof (float)); |
|
|
564 | hist = (float *)SvPVX (histsv); |
|
|
565 | |
|
|
566 | Zero (tmphist, sizeof (tmphist), char); |
|
|
567 | |
|
|
568 | for (j = len; j--; ) |
|
|
569 | { |
|
|
570 | unsigned int idx |
|
|
571 | = ((*buf & 0xc0) >> 2) |
|
|
572 | | ((*buf & 0x18) >> 1) |
|
|
573 | | (*buf & 0x03); |
|
|
574 | |
|
|
575 | ++tmphist[idx]; |
|
|
576 | ++buf; |
|
|
577 | } |
|
|
578 | |
|
|
579 | for (j = 0; j < HISTSIZE; ++j) |
|
|
580 | hist[j] = (float)tmphist[j] / (len + 1e-30); |
|
|
581 | |
|
|
582 | av_push (result, histsv); |
|
|
583 | } |
|
|
584 | |
|
|
585 | RETVAL = newRV_noinc ((SV *)result); |
|
|
586 | } |
|
|
587 | OUTPUT: |
|
|
588 | RETVAL |
|
|
589 | |
|
|
590 | |