blinky-esp/main/leds.cpp

static const char *TAG = "leds";
#include <esp_log.h>

#include <cstring>

#include "gamma.hpp"
#include "leds.hpp"
#include "utils.hpp"


LEDStrip::LEDStrip(int _length) :
            length(_length), brightness(255), pattern(NULL),
            pixels(new Color[_length]),
            colors(new Color[_length]),
            state(NULL)
        {}

void LEDStrip::update_state() {
    if (state) delete state;
    if (pattern) state = pattern->start(length);
    else state = NULL;
}

void LEDStrip::setLength(int _length) {
    clear();
    length_changing(_length);
    delete[] pixels;
    delete[] colors;
    length = _length;
    pixels = new Color[_length];
    colors = new Color[_length];
    update_state();
}

void LEDStrip::step() {
    if (pattern) pattern->step(colors, length, state);
    Gamma::correct(pixels, colors, length, brightness);
}

void LEDStrip::clear() {
    memset(pixels, 0, length * sizeof(*pixels));
    show();
}

static std::string termcolor(Color c) {
    return "\x1b[48;2;" +
            std::to_string((int)c.r) + ";" +
            std::to_string((int)c.g) + ";" +
            std::to_string((int)c.b) + "m";
}

void TerminalLEDs::show() {
    std::string line;
    for (int i = 0; i < length; i++) {
        line += termcolor(pixels[i]) + " ";
    }
    line += "\x1b[0m";
    ESP_LOGI(TAG, "%s", line.c_str());
}