/*
 *  Abuse - dark 2D side-scrolling platform game
 *  Copyright (c) 1995 Crack dot Com
 *  Copyright (c) 2005-2011 Sam Hocevar <sam@hocevar.net>
 *
 *  This software was released into the Public Domain. As with most public
 *  domain software, no warranty is made or implied by Crack dot Com, by
 *  Jonathan Clark, or by Sam Hocevar.
 */

#ifndef _FILTER_HPP
#define _FILTER_HPP

#include "image.h"
#include "palette.h"
#include "specs.h"

class Filter
{
public :
    Filter(int colors = 256);
    Filter(palette *from, palette *to);
    ~Filter();

    void Set(int color_num, int change_to);
    int GetMapping(int color_num) { return m_table[color_num]; }
    void Apply(image *im);
    void PutImage(image *screen, image *im, vec2i pos);

private:
    int m_size;
    uint8_t *m_table;
};

class ColorFilter
{
public:
    ColorFilter(spec_entry *e, bFILE *fp);
    ColorFilter(palette *pal, int color_bits);
    ~ColorFilter();

    size_t DiskUsage();
    int Write(bFILE *fp);
    int Lookup(int r, int g, int b)
    {
        return m_table[(r * m_size + g) * m_size + b];
    }

private:
    int m_size;
    uint8_t *m_table;
};

#endif