simulator/mapping.h (b320fb0) - libetherpix · BlinkenArea

mapping.h

/*
 * EtherPix simulator
 *
 * Copyright 2017 Stefan Schuermans <stefan schuermans info>
 *
 * 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, version 3 of the License.
 *
 *
 * 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 Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAPPING_H
#define MAPPING_H

#include <stdint.h>

/// mapping of input values to LED output values for a color channel
class Mapping
{
public:
  /// color channel number
  enum Channel {
    Red,
    Green,
    Blue,
    ChannelCount
  };

public:
  /// default constructor
  Mapping();

/// constructor based on parameters
  Mapping(double base, double factor, double gamma);

/// map display value to video value
  uint8_t display2video(uint8_t display) const
  {
    return m_display2video[display];
  }

protected:
  /// update internal mapping table based on parameters
  void update();

protected:
   /// parameters of mapping: display := base + factor * video ** (1.0 / gamma)
   //@{
   double m_base;
   double m_factor;
   double m_gamma;
   //@}
   /** mapping table from display values (from IPv4/UDP)
                     to video values (to show on screen) */
   uint8_t m_display2video[256];
};

#endif // #ifndef MAPPING_H

libetherpix

implement mapping table