… | |
… | |
9 | |
9 | |
10 | #define IW 80 |
10 | #define IW 80 |
11 | |
11 | |
12 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
12 | #define RAND (seed = (seed + 7141) * 54773 % 134456) |
13 | |
13 | |
|
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14 | #define LINELENGTH 240 |
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15 | |
14 | #define ELLIPSIS "\xe2\x80\xa6" |
16 | #define ELLIPSIS "\xe2\x80\xa6" |
15 | |
17 | |
16 | static guint32 a85_val; |
18 | static guint32 a85_val; |
17 | static guint a85_cnt; |
19 | static guint a85_cnt; |
18 | static guchar a85_buf[80], *a85_ptr; |
20 | static guchar a85_buf[LINELENGTH], *a85_ptr; |
19 | |
21 | |
20 | static void |
22 | static void |
21 | a85_init (void) |
23 | a85_init (void) |
22 | { |
24 | { |
23 | a85_cnt = 4; |
25 | a85_cnt = 4; |
… | |
… | |
53 | } |
55 | } |
54 | } |
56 | } |
55 | |
57 | |
56 | } |
58 | } |
57 | |
59 | |
|
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60 | static void |
58 | a85_finish (PerlIO *fp) |
61 | a85_finish (PerlIO *fp) |
59 | { |
62 | { |
60 | while (a85_cnt != 4) |
63 | while (a85_cnt != 4) |
61 | a85_push (fp, 0); |
64 | a85_push (fp, 0); |
62 | |
65 | |
… | |
… | |
65 | *a85_ptr++ = '\n'; |
68 | *a85_ptr++ = '\n'; |
66 | |
69 | |
67 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
70 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
68 | } |
71 | } |
69 | |
72 | |
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73 | static void |
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74 | rgb_to_hsv (unsigned int r, unsigned int g, unsigned int b, |
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75 | unsigned int *h, unsigned int *s, unsigned int *v) |
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76 | { |
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77 | unsigned int mx = r; if (g > mx) mx = g; if (b > mx) mx = b; |
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78 | unsigned int mn = r; if (g < mn) mn = g; if (b < mn) mn = b; |
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79 | unsigned int delta = mx - mn; |
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80 | |
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81 | *v = mx; |
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82 | |
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83 | *s = mx ? delta * 255 / mx : 0; |
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84 | |
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85 | if (delta == 0) |
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86 | *h = 0; |
|
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87 | else |
|
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88 | { |
|
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89 | if (r == mx) |
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90 | *h = ((int)g - (int)b) * 255 / (int)(delta * 3); |
|
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91 | else if (g == mx) |
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92 | *h = ((int)b - (int)r) * 255 / (int)(delta * 3) + 52; |
|
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93 | else if (b == mx) |
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94 | *h = ((int)r - (int)g) * 255 / (int)(delta * 3) + 103; |
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95 | |
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96 | *h &= 255; |
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97 | } |
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98 | } |
|
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99 | |
70 | ///////////////////////////////////////////////////////////////////////////// |
100 | ///////////////////////////////////////////////////////////////////////////// |
71 | |
101 | |
72 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
102 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
73 | |
103 | |
74 | PROTOTYPES: ENABLE |
104 | PROTOTYPES: ENABLE |
75 | |
105 | |
76 | GdkPixbuf_noinc * |
106 | GdkPixbuf_noinc * |
77 | transpose (GdkPixbuf *pb) |
107 | transpose (GdkPixbuf *pb) |
78 | CODE: |
108 | CODE: |
79 | { |
109 | { |
80 | int w = gdk_pixbuf_get_width (pb); |
110 | int w = gdk_pixbuf_get_width (pb); |
81 | int h = gdk_pixbuf_get_height (pb); |
111 | int h = gdk_pixbuf_get_height (pb); |
82 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
112 | int bpp = gdk_pixbuf_get_n_channels (pb); |
83 | int x, y, i; |
113 | int x, y, i; |
84 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
114 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
85 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
115 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
86 | |
116 | |
87 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
117 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, h, w); |
… | |
… | |
101 | flop (GdkPixbuf *pb) |
131 | flop (GdkPixbuf *pb) |
102 | CODE: |
132 | CODE: |
103 | { |
133 | { |
104 | int w = gdk_pixbuf_get_width (pb); |
134 | int w = gdk_pixbuf_get_width (pb); |
105 | int h = gdk_pixbuf_get_height (pb); |
135 | int h = gdk_pixbuf_get_height (pb); |
106 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
136 | int bpp = gdk_pixbuf_get_n_channels (pb); |
107 | int x, y, i; |
137 | int x, y, i; |
108 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
138 | guchar *src = gdk_pixbuf_get_pixels (pb), *dst; |
109 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
139 | int sstr = gdk_pixbuf_get_rowstride (pb), dstr; |
110 | |
140 | |
111 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
141 | RETVAL = gdk_pixbuf_new (GDK_COLORSPACE_RGB, bpp == 4, 8, w, h); |
… | |
… | |
156 | { |
186 | { |
157 | int w = gdk_pixbuf_get_width (pb); |
187 | int w = gdk_pixbuf_get_width (pb); |
158 | int h = gdk_pixbuf_get_height (pb); |
188 | int h = gdk_pixbuf_get_height (pb); |
159 | int x, y; |
189 | int x, y; |
160 | guchar *dst; |
190 | guchar *dst; |
161 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
191 | int bpp = gdk_pixbuf_get_n_channels (pb); |
162 | guchar *src = gdk_pixbuf_get_pixels (pb); |
192 | guchar *src = gdk_pixbuf_get_pixels (pb); |
163 | int sstr = gdk_pixbuf_get_rowstride (pb); |
193 | int sstr = gdk_pixbuf_get_rowstride (pb); |
164 | int Er[IW], Eg[IW], Eb[IW]; |
194 | int Er[IW], Eg[IW], Eb[IW]; |
165 | int seed = 77; |
195 | int seed = 77; |
166 | |
196 | |
… | |
… | |
211 | ############################################################################# |
241 | ############################################################################# |
212 | |
242 | |
213 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
243 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::PostScript |
214 | |
244 | |
215 | void |
245 | void |
216 | dump_pb (PerlIO *fp, GdkPixbuf *pb) |
246 | dump_ascii85 (PerlIO *fp, GdkPixbuf *pb) |
217 | CODE: |
247 | CODE: |
218 | { |
248 | { |
219 | int w = gdk_pixbuf_get_width (pb); |
249 | int w = gdk_pixbuf_get_width (pb); |
220 | int h = gdk_pixbuf_get_height (pb); |
250 | int h = gdk_pixbuf_get_height (pb); |
221 | int x, y, i; |
251 | int x, y, i; |
222 | guchar *dst; |
252 | guchar *dst; |
223 | int bpp = gdk_pixbuf_get_has_alpha (pb) ? 4 : 3; |
253 | int bpp = gdk_pixbuf_get_n_channels (pb); |
224 | guchar *src = gdk_pixbuf_get_pixels (pb); |
254 | guchar *src = gdk_pixbuf_get_pixels (pb); |
225 | int sstr = gdk_pixbuf_get_rowstride (pb); |
255 | int sstr = gdk_pixbuf_get_rowstride (pb); |
226 | |
256 | |
227 | a85_init (); |
257 | a85_init (); |
228 | |
258 | |
229 | for (y = 0; y < h; y++) |
259 | for (y = 0; y < h; y++) |
230 | for (x = 0; x < w; x++) |
260 | for (x = 0; x < w; x++) |
231 | for (i = 0; i < 3; i++) |
261 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
232 | a85_push (fp, src [x * bpp + y * sstr + i]); |
262 | a85_push (fp, src [x * bpp + y * sstr + i]); |
233 | |
263 | |
234 | a85_finish (fp); |
264 | a85_finish (fp); |
235 | } |
265 | } |
236 | |
266 | |
|
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267 | void |
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268 | dump_binary (PerlIO *fp, GdkPixbuf *pb) |
|
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269 | CODE: |
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270 | { |
|
|
271 | int w = gdk_pixbuf_get_width (pb); |
|
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272 | int h = gdk_pixbuf_get_height (pb); |
|
|
273 | int x, y, i; |
|
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274 | guchar *dst; |
|
|
275 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
|
276 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
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277 | int sstr = gdk_pixbuf_get_rowstride (pb); |
237 | |
278 | |
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279 | for (y = 0; y < h; y++) |
|
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280 | for (x = 0; x < w; x++) |
|
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281 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
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282 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
|
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283 | } |
238 | |
284 | |
|
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285 | ############################################################################# |
239 | |
286 | |
|
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287 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
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288 | |
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289 | SV * |
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290 | pb_to_hv84 (GdkPixbuf *pb) |
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291 | CODE: |
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292 | { |
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293 | int w = gdk_pixbuf_get_width (pb); |
|
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294 | int h = gdk_pixbuf_get_height (pb); |
|
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295 | int x, y; |
|
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296 | guchar *dst; |
|
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297 | int bpp = gdk_pixbuf_get_n_channels (pb); |
|
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298 | guchar *src = gdk_pixbuf_get_pixels (pb); |
|
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299 | int sstr = gdk_pixbuf_get_rowstride (pb); |
|
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300 | |
|
|
301 | RETVAL = newSV (6 * 8 * 12 / 8); |
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302 | SvPOK_only (RETVAL); |
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303 | SvCUR_set (RETVAL, 6 * 8 * 12 / 8); |
|
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304 | |
|
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305 | dst = SvPVX (RETVAL); |
|
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306 | |
|
|
307 | /* some primitive error distribution + random dithering */ |
|
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308 | |
|
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309 | for (y = 0; y < h; y++) |
|
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310 | { |
|
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311 | guchar *p = src + y * sstr; |
|
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312 | |
|
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313 | for (x = 0; x < w; x += 2) |
|
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314 | { |
|
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315 | unsigned int r, g, b, h, s, v, H, V1, V2; |
|
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316 | |
|
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317 | if (bpp == 3) |
|
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318 | r = *p++, g = *p++, b = *p++; |
|
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319 | else if (bpp == 1) |
|
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320 | r = g = b = *p++; |
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321 | else |
|
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322 | abort (); |
|
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323 | |
|
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324 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
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325 | |
|
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326 | H = (h * 15 / 255) << 4; |
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327 | V1 = v; |
|
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328 | |
|
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329 | if (bpp == 3) |
|
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330 | r = *p++, g = *p++, b = *p++; |
|
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331 | else if (bpp == 1) |
|
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332 | r = g = b = *p++; |
|
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333 | else |
|
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334 | abort (); |
|
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335 | |
|
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336 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
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337 | |
|
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338 | H |= h * 15 / 255; |
|
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339 | V2 = v; |
|
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340 | |
|
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341 | *dst++ = H; |
|
|
342 | *dst++ = V1; |
|
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343 | *dst++ = V2; |
|
|
344 | } |
|
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345 | } |
|
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346 | } |
|
|
347 | OUTPUT: |
|
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348 | RETVAL |
|
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349 | |
|
|
350 | SV * |
|
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351 | hv84_to_av (unsigned char *hv84) |
|
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352 | CODE: |
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353 | { |
|
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354 | int i = 72 / 3; |
|
|
355 | AV *av = newAV (); |
|
|
356 | |
|
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357 | RETVAL = (SV *)newRV_noinc ((SV *)av); |
|
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358 | while (i--) |
|
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359 | { |
|
|
360 | int h = *hv84++; |
|
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361 | int v1 = *hv84++; |
|
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362 | int v2 = *hv84++; |
|
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363 | |
|
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364 | av_push (av, newSViv (v1)); |
|
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365 | av_push (av, newSViv ((h >> 4) * 255 / 15)); |
|
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366 | av_push (av, newSViv (v2)); |
|
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367 | av_push (av, newSViv ((h & 15) * 255 / 15)); |
|
|
368 | } |
|
|
369 | } |
|
|
370 | OUTPUT: |
|
|
371 | RETVAL |
|
|
372 | |
|
|
373 | |
|
|
374 | |