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