circuitpython/shared-module/displayio/ColorConverter.h

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Scott Shawcroft for Adafruit Industries
*
* 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 MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_COLORCONVERTER_H
#define MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_COLORCONVERTER_H
#include <stdbool.h>
#include <stdint.h>
#include "py/obj.h"
#include "shared-module/displayio/Palette.h"
typedef struct displayio_colorconverter {
mp_obj_base_t base;
bool dither;
uint8_t input_colorspace;
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_displayio_colorspace_t output_colorspace;
uint32_t transparent_color;
// Cache the last computed color in case the are the same.
const _displayio_colorspace_t *cached_colorspace;
uint32_t cached_input_pixel;
uint32_t cached_output_color;
} displayio_colorconverter_t;
bool displayio_colorconverter_needs_refresh(displayio_colorconverter_t *self);
void displayio_colorconverter_finish_refresh(displayio_colorconverter_t *self);
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void displayio_colorconverter_convert(displayio_colorconverter_t *self, const _displayio_colorspace_t *colorspace, const displayio_input_pixel_t *input_pixel, displayio_output_pixel_t *output_color);
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uint32_t displayio_colorconverter_dither_noise_1(uint32_t n);
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uint32_t displayio_colorconverter_dither_noise_2(uint32_t x, uint32_t y);
// Convert version that doesn't require a colorconverter object.
void displayio_convert_color(const _displayio_colorspace_t *colorspace, bool dither, const displayio_input_pixel_t *input_pixel, displayio_output_pixel_t *output_color);
uint16_t displayio_colorconverter_compute_rgb565(uint32_t color_rgb888);
uint8_t displayio_colorconverter_compute_rgb332(uint32_t color_rgb888);
uint8_t displayio_colorconverter_compute_rgbd(uint32_t color_rgb888);
uint8_t displayio_colorconverter_compute_luma(uint32_t color_rgb888);
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uint8_t displayio_colorconverter_compute_chroma(uint32_t color_rgb888);
uint8_t displayio_colorconverter_compute_hue(uint32_t color_rgb888);
uint8_t displayio_colorconverter_compute_sevencolor(uint32_t color_rgb888);
void displayio_colorconverter_compute_tricolor(const _displayio_colorspace_t *colorspace, uint8_t pixel_hue, uint32_t *color);
#endif // MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_COLORCONVERTER_H