2 * Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
27 #include "flx_color.h"
29 FlxColorSpaceConverter *
30 flx_colorspace_converter_new (gint width, gint height)
32 FlxColorSpaceConverter *new = g_malloc (sizeof (FlxColorSpaceConverter));
37 memset (new->palvec, 0, sizeof (new->palvec));
42 flx_colorspace_converter_destroy (FlxColorSpaceConverter * flxpal)
44 g_return_if_fail (flxpal != NULL);
50 flx_colorspace_convert (FlxColorSpaceConverter * flxpal, guchar * src,
55 g_return_if_fail (flxpal != NULL);
56 g_return_if_fail (src != dest);
59 size = flxpal->width * flxpal->height;
64 #if G_BYTE_ORDER == G_BIG_ENDIAN
66 *dest++ = flxpal->palvec[col];
67 *dest++ = flxpal->palvec[col + 1];
68 *dest++ = flxpal->palvec[col + 2];
70 *dest++ = flxpal->palvec[col + 2];
71 *dest++ = flxpal->palvec[col + 1];
72 *dest++ = flxpal->palvec[col];
81 flx_set_palette_vector (FlxColorSpaceConverter * flxpal, guint start, guint num,
82 guchar * newpal, gint scale)
86 g_return_if_fail (flxpal != NULL);
87 g_return_if_fail (start < 0x100);
89 grab = ((start + num) > 0x100 ? 0x100 - start : num);
96 flxpal->palvec[start++] = newpal[i++] << scale;
97 flxpal->palvec[start++] = newpal[i++] << scale;
98 flxpal->palvec[start++] = newpal[i++] << scale;
102 memcpy (&flxpal->palvec[start * 3], newpal, grab * 3);
107 flx_set_color (FlxColorSpaceConverter * flxpal, guint colr, guint red,
108 guint green, guint blue, gint scale)
111 g_return_if_fail (flxpal != NULL);
112 g_return_if_fail (colr < 0x100);
114 flxpal->palvec[(colr * 3)] = red << scale;
115 flxpal->palvec[(colr * 3) + 1] = green << scale;
116 flxpal->palvec[(colr * 3) + 2] = blue << scale;