mirror of https://github.com/GNOME/gimp.git
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimplut.h: Copyright (C) 1999 Jay Cox <jaycox@earthlink.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __GIMP_LUT_H__
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#define __GIMP_LUT_H__
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struct _GimpLut
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{
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guchar **luts;
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gint nchannels;
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};
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/* TODO: the GimpLutFunc should really be passed the ColorModel of the
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* region, not just the number of channels
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*/
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/* GimpLutFuncs should assume that the input and output gamma are 1.0
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* and do no correction as this will be handled by gimp_lut_setup
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*/
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typedef gfloat (*GimpLutFunc) (gpointer user_data,
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gint nchannels,
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gint channel,
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gfloat value);
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GimpLut * gimp_lut_new (void);
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void gimp_lut_free (GimpLut *lut);
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void gimp_lut_setup (GimpLut *lut,
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GimpLutFunc func,
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gpointer user_data,
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gint nchannels);
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/* gimp_lut_setup_exact is currently identical to gimp_lut_setup. It
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* however is guaranteed to never perform any interpolation or gamma
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* correction on the lut
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*/
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void gimp_lut_setup_exact (GimpLut *lut,
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GimpLutFunc func,
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gpointer user_data,
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gint nchannels);
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void gimp_lut_process (GimpLut *lut,
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PixelRegion *srcPR,
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PixelRegion *destPR);
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/* gimp_lut_process_inline is like gimp_lut_process except it uses a
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* single PixelRegion as both the source and destination
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*/
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void gimp_lut_process_inline (GimpLut *lut,
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PixelRegion *src_destPR);
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/* gimp_lut_process_2 is the same as gimp_lut_process but the lut
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* parameter is last instead of first. this is necesary because
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* pixel_region_process_paralell sends the user_data as the 1st
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* parameter, and the image_map functions send user_data as the last
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* parameter
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*/
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void gimp_lut_process_2 (PixelRegion *srcPR,
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PixelRegion *destPR,
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GimpLut *lut);
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#endif /* __GIMP_LUT_H__ */
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