77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
/*
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* Copyright (C) 2021-2022 The LineageOS Project
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "Utils.h"
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#define LOG_TAG "android.hardware.light-service.xiaomi"
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#include <android-base/file.h>
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#include <android-base/logging.h>
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#include <unistd.h>
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using ::android::base::ReadFileToString;
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using ::android::base::WriteStringToFile;
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace light {
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bool fileWriteable(const std::string& file) {
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return !access(file.c_str(), W_OK);
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}
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bool readFromFile(const std::string& file, std::string *content) {
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return ReadFileToString(file, content, true);
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}
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bool readFromFile(const std::string& file, uint32_t *content) {
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std::string content_str;
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if (readFromFile(file, &content_str))
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*content = std::stoi(content_str);
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else
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return false;
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return true;
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}
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bool writeToFile(const std::string& file, std::string content) {
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return WriteStringToFile(content, file);
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}
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bool writeToFile(const std::string& file, uint32_t content) {
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return writeToFile(file, std::to_string(content));
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}
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rgb::rgb(uint32_t color) {
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// Extract brightness from AARRGGBB.
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uint8_t alpha = (color >> 24) & 0xFF;
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// Retrieve each of the RGB colors
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red = (color >> 16) & 0xFF;
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green = (color >> 8) & 0xFF;
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blue = color & 0xFF;
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// Scale RGB colors if a brightness has been applied by the user
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if (alpha > 0 && alpha < 255) {
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red = red * alpha / 0xFF;
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green = green * alpha / 0xFF;
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blue = blue * alpha / 0xFF;
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}
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}
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bool rgb::isLit() {
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return !!red || !!green || !!blue;
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}
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uint8_t rgb::toBrightness() {
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return (77 * red + 150 * green + 29 * blue) >> 8;
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}
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} // namespace light
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} // namespace hardware
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} // namespace android
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} // namespace aidl
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