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/* 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);
*dest++ = flxpal->palvec[col+2];
*dest++ = flxpal->palvec[col+1];
*dest++ = flxpal->palvec[col];
*dest++ = 0;
}
}
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;
}
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