palette.h

Go to the documentation of this file.

/*
** Jo Sega Saturn Engine
** Copyright (c) 2012-2026, Johannes Fetz (johannesfetz@gmail.com)
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
**     * Redistributions of source code must retain the above copyright
**       notice, this list of conditions and the following disclaimer.
**     * Redistributions in binary form must reproduce the above copyright
**       notice, this list of conditions and the following disclaimer in the
**       documentation and/or other materials provided with the distribution.
**     * Neither the name of the Johannes Fetz nor the
**       names of its contributors may be used to endorse or promote products
**       derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
** DISCLAIMED. IN NO EVENT SHALL Johannes Fetz BE LIABLE FOR ANY
** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
 
#ifndef __JO_PALETTE_H__
# define __JO_PALETTE_H__

# define JO_PALETTE_MAX_COLORS              (255)

# define JO_PALETTE_MAX                     (8)

void                jo_create_palette(jo_palette * const output);

static  __jo_force_inline void    jo_palette_to_cram(unsigned short * restrict data, unsigned short * restrict cram_addr, unsigned int size)
{
    while (size-- > 0) *(cram_addr++) = *(data++);
}

static  __jo_force_inline void        jo_create_palette_from(jo_palette * const output, unsigned short *data, unsigned int size)
{
    jo_create_palette(output);
    jo_palette_to_cram(data, output->data, size);
}

void                jo_set_palette_register(const unsigned short palette_index, const jo_color color);

jo_color            jo_get_palette_register(const unsigned short palette_index);
 
#ifdef JO_COMPILE_WITH_PRINTF_SUPPORT

static  __jo_force_inline void        jo_set_printf_palette_color(const unsigned short index, const unsigned short color)
{
    // Color 1 of the 16 colors palette "index"
    jo_set_palette_register(1 + JO_MULT_BY_16(index), color);
}
 
#endif
 
#endif /* !__JO_PALETTE_H__ */
 
/*
** END OF FILE
*/