/*! \file gamma.h
** \brief Template Header
**
-** $Id: gamma.h,v 1.1.1.1 2005/01/04 01:23:14 darco Exp $
+** $Id$
**
** \legal
-** Copyright (c) 2002 Robert B. Quattlebaum Jr.
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
-** This software and associated documentation
-** are CONFIDENTIAL and PROPRIETARY property of
-** the above-mentioned copyright holder.
+** This package 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.
**
-** You may not copy, print, publish, or in any
-** other way distribute this software without
-** a prior written agreement with
-** the copyright holder.
+** This package 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.
** \endlegal
*/
/* ========================================================================= */
float gamma_b;
float black_level;
float red_blue_level;
-
+
unsigned char table_r_U16_to_U8[65536];
unsigned char table_g_U16_to_U8[65536];
unsigned char table_b_U16_to_U8[65536];
float table_r_U8_to_F32[256];
float table_g_U8_to_F32[256];
float table_b_U8_to_F32[256];
-
+
public:
Gamma(float x=1):black_level(0) { set_gamma(x); }
float get_gamma_b()const { return gamma_b; }
float get_black_level()const { return black_level; }
float get_red_blue_level()const { return red_blue_level; }
-
+
void refresh_gamma_r();
void refresh_gamma_g();
void refresh_gamma_b();
-
+
const unsigned char &r_U16_to_U8(int i)const { return table_r_U16_to_U8[i]; }
const unsigned char &g_U16_to_U8(int i)const { return table_g_U16_to_U8[i]; }
const unsigned char &b_U16_to_U8(int i)const { return table_b_U16_to_U8[i]; }
float g_F32_to_F32(float x)const { return static_cast<float>(pow(x,gamma_g)*(1.0f-black_level)+black_level); }
float b_F32_to_F32(float x)const { return static_cast<float>(pow(x,gamma_b)*(1.0f-black_level)+black_level); }
}; // END of class Gamma
-
+
}; // END of namespace synfig
/* === E N D =============================================================== */