| … | |
… | |
| 55 | } |
55 | } |
| 56 | } |
56 | } |
| 57 | |
57 | |
| 58 | } |
58 | } |
| 59 | |
59 | |
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60 | static void |
| 60 | a85_finish (PerlIO *fp) |
61 | a85_finish (PerlIO *fp) |
| 61 | { |
62 | { |
| 62 | while (a85_cnt != 4) |
63 | while (a85_cnt != 4) |
| 63 | a85_push (fp, 0); |
64 | a85_push (fp, 0); |
| 64 | |
65 | |
| 65 | *a85_ptr++ = '~'; // probably buggy end-marker |
66 | *a85_ptr++ = '~'; // probably buggy end-marker |
| 66 | *a85_ptr++ = '>'; // probably buggy end-marker |
67 | *a85_ptr++ = '>'; // probably buggy end-marker |
| 67 | *a85_ptr++ = '\n'; |
68 | *a85_ptr++ = '\n'; |
| 68 | |
69 | |
| 69 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
70 | PerlIO_write (fp, a85_buf, a85_ptr - a85_buf); |
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71 | } |
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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 | } |
| 70 | } |
98 | } |
| 71 | |
99 | |
| 72 | ///////////////////////////////////////////////////////////////////////////// |
100 | ///////////////////////////////////////////////////////////////////////////// |
| 73 | |
101 | |
| 74 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
102 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV::ImageWindow |
| … | |
… | |
| 252 | for (x = 0; x < w; x++) |
280 | for (x = 0; x < w; x++) |
| 253 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
281 | for (i = 0; i < (bpp < 3 ? 1 : 3); i++) |
| 254 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
282 | PerlIO_putc (fp, src [x * bpp + y * sstr + i]); |
| 255 | } |
283 | } |
| 256 | |
284 | |
|
|
285 | ############################################################################# |
| 257 | |
286 | |
|
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287 | MODULE = Gtk2::CV PACKAGE = Gtk2::CV |
| 258 | |
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); |
| 259 | |
300 | |
|
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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 | |
|
|
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 | |
|
|
329 | if (bpp == 3) |
|
|
330 | r = *p++, g = *p++, b = *p++; |
|
|
331 | else if (bpp == 1) |
|
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332 | r = g = b = *p++; |
|
|
333 | else |
|
|
334 | abort (); |
|
|
335 | |
|
|
336 | rgb_to_hsv (r, g, b, &h, &s, &v); |
|
|
337 | |
|
|
338 | H |= h * 15 / 255; |
|
|
339 | V2 = v; |
|
|
340 | |
|
|
341 | *dst++ = H; |
|
|
342 | *dst++ = V1; |
|
|
343 | *dst++ = V2; |
|
|
344 | } |
|
|
345 | } |
|
|
346 | } |
|
|
347 | OUTPUT: |
|
|
348 | RETVAL |
|
|
349 | |
|
|
350 | |
|
|
351 | |
|
|
352 | |
