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/**
* @file lv_color.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_color_op_private.h"
#include "lv_log.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_color_t LV_ATTRIBUTE_FAST_MEM lv_color_mix(lv_color_t c1, lv_color_t c2, uint8_t mix)
{
lv_color_t ret;
ret.red = LV_UDIV255((uint16_t)c1.red * mix + c2.red * (255 - mix) + LV_COLOR_MIX_ROUND_OFS);
ret.green = LV_UDIV255((uint16_t)c1.green * mix + c2.green * (255 - mix) + LV_COLOR_MIX_ROUND_OFS);
ret.blue = LV_UDIV255((uint16_t)c1.blue * mix + c2.blue * (255 - mix) + LV_COLOR_MIX_ROUND_OFS);
return ret;
}
lv_color32_t lv_color_mix32(lv_color32_t fg, lv_color32_t bg)
{
if(fg.alpha >= LV_OPA_MAX) {
fg.alpha = bg.alpha;
return fg;
}
if(fg.alpha <= LV_OPA_MIN) {
return bg;
}
bg.red = (uint32_t)((uint32_t)fg.red * fg.alpha + (uint32_t)bg.red * (255 - fg.alpha)) >> 8;
bg.green = (uint32_t)((uint32_t)fg.green * fg.alpha + (uint32_t)bg.green * (255 - fg.alpha)) >> 8;
bg.blue = (uint32_t)((uint32_t)fg.blue * fg.alpha + (uint32_t)bg.blue * (255 - fg.alpha)) >> 8;
return bg;
}
uint8_t lv_color_brightness(lv_color_t c)
{
uint16_t bright = (uint16_t)(3u * c.red + c.green + 4u * c.blue);
return (uint8_t)(bright >> 3);
}
void lv_color_filter_dsc_init(lv_color_filter_dsc_t * dsc, lv_color_filter_cb_t cb)
{
dsc->filter_cb = cb;
}
/**********************
* STATIC FUNCTIONS
**********************/
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