gimp/app/gimplut.h

67 lines
2.4 KiB
C

/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimplut.h: Copyright (C) 1999 Jay Cox <jaycox@earthlink.net>
*
* 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __GIMP_LUT_H__
#define __GIMP_LUT_H__
#include "gimplutF.h"
#include "pixel_region.h"
/* TODO: the GimpLutFunc should really be passed the ColorModel of the region,
not just the number of channels */
/* GimpLutFuncs should assume that the input and output gamma are 1.0
and do no correction as this will be handled by gimp_lut_setup */
typedef float (*GimpLutFunc)(void *user_data, int nchannels,
int channel, float value);
GimpLut * gimp_lut_new ();
void gimp_lut_free (GimpLut *lut);
void gimp_lut_setup (GimpLut *, GimpLutFunc,
void *user_data,
int nchannels);
/* gimp_lut_setup_exact is currently identical to gimp_lut_setup. It
however is guaranteed to never perform any interpolation or gamma
correction on the lut */
void gimp_lut_setup_exact (GimpLut *, GimpLutFunc,
void *user_data,
int nchannels);
void gimp_lut_process (GimpLut *lut,
PixelRegion *srcPR,
PixelRegion *destPR);
/* gimp_lut_process_inline is like gimp_lut_process except it uses a
single PixelRegion as both the source and destination */
void gimp_lut_process_inline(GimpLut *lut,
PixelRegion *src_destPR);
/* gimp_lut_process_2 is the same as gimp_lut_process but the lut
perameter is last instead of first. this is necesary because
pixel_region_process_paralell sends the user_data as the 1st
parameter, and the image_map functions send user_data as the last
parameter */
void gimp_lut_process_2 (PixelRegion *srcPR,
PixelRegion *destPR,
GimpLut *lut);
#endif /* __GIMP_LUT_H__ */