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/*
* Copyright (C) 2019 The LineageOS Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <android-base/file.h>
#include <android-base/strings.h>
#include <fstream>
#include "DisplayColorCalibration.h"
using android::base::ReadFileToString;
using android::base::Split;
using android::base::Trim;
using android::base::WriteStringToFile;
namespace vendor {
namespace lineage {
namespace livedisplay {
namespace V2_0 {
namespace sysfs {
bool DisplayColorCalibration::isSupported() {
std::fstream rgb(FILE_RGB, rgb.in | rgb.out);
return rgb.good();
}
// Methods from ::vendor::lineage::livedisplay::V2_0::IDisplayColorCalibration follow.
Return<int32_t> DisplayColorCalibration::getMaxValue() {
return 32768;
}
Return<int32_t> DisplayColorCalibration::getMinValue() {
return 255;
}
Return<void> DisplayColorCalibration::getCalibration(getCalibration_cb _hidl_cb) {
std::vector<int32_t> rgb;
std::string tmp;
if (ReadFileToString(FILE_RGB, &tmp)) {
std::vector<std::string> colors = Split(Trim(tmp), " ");
for (const std::string& color : colors) {
rgb.push_back(std::stoi(color));
}
}
_hidl_cb(rgb);
return Void();
}
Return<bool> DisplayColorCalibration::setCalibration(const hidl_vec<int32_t>& rgb) {
std::string contents;
for (const int32_t& color : rgb) {
contents += std::to_string(color) + " ";
}
return WriteStringToFile(Trim(contents), FILE_RGB, true);
}
} // namespace sysfs
} // namespace V2_0
} // namespace livedisplay
} // namespace lineage
} // namespace vendor
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