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color.h
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color.h
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/**
* @file tlc5947-rgb-micropython/tlc5947/color.h
* @author Peter Züger
* @date 11.09.2018
* @brief tlc5947 RGB color handling
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Peter Züger
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef TLC5947_COLOR_H
#define TLC5947_COLOR_H
#include <stdint.h>
#include <stdbool.h>
typedef struct{
uint16_t r:12; /*< red [0 -> 4095] */
uint16_t g:12; /*< green [0 -> 4095] */
uint16_t b:12; /*< blue [0 -> 4095] */
}rgb12;
typedef struct{
uint8_t r; /*< red [0 -> 255] */
uint8_t g; /*< green [0 -> 255] */
uint8_t b; /*< blue [0 -> 255] */
}rgb8;
typedef float white_balance_matrix[3];
typedef float gamut_matrix[3][3];
#if defined(__cplusplus)
extern "C"{
#endif /* defined(__cplusplus) */
/**
* takes a string in the form of:
* "#RRGGBB"
* and converts it to the rgb struct
* does no sanity checking !
* the # is ignored and can be any character
* the hex string can be upper or lowercase
*/
rgb12 get_rgb12(const char* s);
rgb8 get_rgb8(const char* s);
/**
* writes a string in the format to s:
* "#RRGGBB\0"
* appends the terminating 0 character.
* returns s + 7
*/
const char* put_rgb8(char* s, rgb8 c);
rgb8 rgb12torgb8(rgb12 c)__attribute__ ((const));
rgb12 rgb8torgb12(rgb8 c)__attribute__ ((const));
rgb12 rgb12_brightness(rgb12 c, float brightness);
void default_white_balance(white_balance_matrix m);
rgb12 rgb12_white_balance(rgb12 c, white_balance_matrix m);
void default_gamut_matrix(gamut_matrix m);
bool gamut_matrix_valid(gamut_matrix m);
rgb12 rgb12_gamut(rgb12 c, gamut_matrix m);
#if defined(__cplusplus)
}
#endif /* defined(__cplusplus) */
#endif /* TLC5947_COLOR_H */