71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
/*
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* Copyright (C) 2019 The LineageOS Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <fstream>
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#include "DisplayColorCalibration.h"
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namespace vendor {
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namespace lineage {
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namespace livedisplay {
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namespace V2_0 {
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namespace samsung {
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static constexpr const char *kColorPath = "/sys/class/graphics/fb0/rgb";
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bool DisplayColorCalibration::isSupported() {
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std::ofstream file(kColorPath);
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return file.good();
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}
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Return<int32_t> DisplayColorCalibration::getMaxValue() {
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return 32768;
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}
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Return<int32_t> DisplayColorCalibration::getMinValue() {
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return 255;
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}
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Return<void> DisplayColorCalibration::getCalibration(getCalibration_cb resultCb) {
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std::ifstream file(kColorPath);
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int r, g, b;
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file >> r >> g >> b;
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if (file.fail()) {
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resultCb(std::vector<int32_t>());
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} else {
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resultCb(std::vector<int32_t>({ r, g, b }));
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}
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return Void();
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}
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Return<bool> DisplayColorCalibration::setCalibration(const hidl_vec<int32_t>& rgb) {
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std::ofstream file(kColorPath);
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if (rgb.size() != 3) {
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return false;
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}
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file << rgb[0] << " " << rgb[1] << " " << rgb[2];
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return !file.fail();
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}
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} // namespace samsung
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} // namespace V2_0
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} // namespace livedisplay
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} // namespace lineage
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} // namespace vendor
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