+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file gamma.h
-** \brief Template Header
-**
-** $Id: gamma.h,v 1.1.1.1 2005/01/04 01:23:14 darco Exp $
-**
-** \legal
-** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-**
-** 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.
-**
-** 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
-*/
-/* ========================================================================= */
-
-/* === S T A R T =========================================================== */
-
-#ifndef __SYNFIG_GAMMA_H
-#define __SYNFIG_GAMMA_H
-
-/* === H E A D E R S ======================================================= */
-
-#include <cmath>
-
-/* === M A C R O S ========================================================= */
-
-/* === T Y P E D E F S ===================================================== */
-
-/* === C L A S S E S & S T R U C T S ======================================= */
-
-namespace synfig {
-
-/*! \class Gamma
-** \brief This class performs color correction on Color classes.
-** \stub
-*/
-class Gamma
-{
- float gamma_r;
- float gamma_g;
- 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); }
-
- void set_gamma(float x);
- void set_gamma_r(float x);
- void set_gamma_g(float x);
- void set_gamma_b(float x);
- void set_black_level(float x);
-
- void set_red_blue_level(float x);
- void set_all(float r, float g, float b, float black, float red_blue=1.0f);
-
- float get_gamma()const { return (gamma_r+gamma_g+gamma_b)*0.33333333; }
- float get_gamma_r()const { return gamma_r; }
- float get_gamma_g()const { return gamma_g; }
- 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]; }
-
- const unsigned char &r_F32_to_U8(float x)const { return table_r_U16_to_U8[(int)(x*65535.0f)]; }
- const unsigned char &g_F32_to_U8(float x)const { return table_g_U16_to_U8[(int)(x*65535.0f)]; }
- const unsigned char &b_F32_to_U8(float x)const { return table_b_U16_to_U8[(int)(x*65535.0f)]; }
-
- unsigned short r_F32_to_U16(float x)const { return (unsigned short)table_r_U16_to_U8[(int)(x*65535.0f)]<<8; }
- unsigned short g_F32_to_U16(float x)const { return (unsigned short)table_g_U16_to_U8[(int)(x*65535.0f)]<<8; }
- unsigned short b_F32_to_U16(float x)const { return (unsigned short)table_b_U16_to_U8[(int)(x*65535.0f)]<<8; }
-
- const float& r_U8_to_F32(int i)const { return table_r_U8_to_F32[i]; }
- const float& g_U8_to_F32(int i)const { return table_g_U8_to_F32[i]; }
- const float& b_U8_to_F32(int i)const { return table_b_U8_to_F32[i]; }
-
- float r_F32_to_F32(float x)const { return static_cast<float>(pow(x,gamma_r)*(1.0f-black_level)+black_level); }
- 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 =============================================================== */
-
-#endif