1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <gst/gst.h>
#include "flx_color.h"
FlxColorSpaceConverter *
flx_colorspace_converter_new (gint width, gint height)
{
FlxColorSpaceConverter *new = g_malloc (sizeof (FlxColorSpaceConverter));
new->width = width;
new->height = height;
memset (new->palvec, 0, sizeof (new->palvec));
return new;
}
void
flx_colorspace_converter_destroy (FlxColorSpaceConverter * flxpal)
{
g_return_if_fail (flxpal != NULL);
g_free (flxpal);
}
void
flx_colorspace_convert (FlxColorSpaceConverter * flxpal, guchar * src,
guchar * dest)
{
guint size, col;
g_return_if_fail (flxpal != NULL);
g_return_if_fail (src != dest);
size = flxpal->width * flxpal->height;
while (size--) {
col = (*src++ * 3);
#if G_BYTE_ORDER == G_BIG_ENDIAN
*dest++ = 0;
*dest++ = flxpal->palvec[col];
*dest++ = flxpal->palvec[col + 1];
*dest++ = flxpal->palvec[col + 2];
#else
*dest++ = flxpal->palvec[col + 2];
*dest++ = flxpal->palvec[col + 1];
*dest++ = flxpal->palvec[col];
*dest++ = 0;
#endif
}
}
void
flx_set_palette_vector (FlxColorSpaceConverter * flxpal, guint start, guint num,
guchar * newpal, gint scale)
{
guint grab;
g_return_if_fail (flxpal != NULL);
g_return_if_fail (start < 0x100);
grab = ((start + num) > 0x100 ? 0x100 - start : num);
if (scale) {
gint i = 0;
start *= 3;
while (grab) {
flxpal->palvec[start++] = newpal[i++] << scale;
flxpal->palvec[start++] = newpal[i++] << scale;
flxpal->palvec[start++] = newpal[i++] << scale;
grab--;
}
} else {
memcpy (&flxpal->palvec[start * 3], newpal, grab * 3);
}
}
void
flx_set_color (FlxColorSpaceConverter * flxpal, guint colr, guint red,
guint green, guint blue, gint scale)
{
g_return_if_fail (flxpal != NULL);
g_return_if_fail (colr < 0x100);
flxpal->palvec[(colr * 3)] = red << scale;
flxpal->palvec[(colr * 3) + 1] = green << scale;
flxpal->palvec[(colr * 3) + 2] = blue << scale;
}
|
