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/*
normalmap GIMP plugin
Copyright (C) 2002-2008 Shawn Kirst <skirst@insightbb.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This program 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#ifndef __SCALE_H
#define __SCALE_H
void scale_pixels(unsigned char *dst, int dw, int dh,
unsigned char *src, int sw, int sh,
int bpp);
static inline int icerp(int a, int b, int c, int d, int x)
{
int p = (d - c) - (a - b);
int q = (a - b) - p;
int r = c - a;
return((x * (x * (x * p + (q << 7)) + (r << 14)) + (b << 21)) >> 21);
}
#endif
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