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hardware_samsung/lineagehw/hidl/livedisplay/ReadingEnhancement.cpp

64 lines
1.8 KiB

/*
* 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 "ReadingEnhancement.h"
using android::base::ReadFileToString;
using android::base::Trim;
using android::base::WriteStringToFile;
namespace vendor {
namespace lineage {
namespace livedisplay {
namespace V2_0 {
namespace samsung {
static constexpr const char *kREPath = "/sys/class/mdnie/mdnie/accessibility";
// Methods from ::vendor::lineage::livedisplay::V2_0::ISunlightEnhancement follow.
bool ReadingEnhancement::isSupported() {
std::fstream re(kREPath, re.in | re.out);
return re.good();
}
// Methods from ::vendor::lineage::livedisplay::V2_0::IReadingEnhancement follow.
Return<bool> ReadingEnhancement::isEnabled() {
std::string contents;
if (ReadFileToString(kREPath, &contents)) {
contents = Trim(contents);
}
return !contents.compare("Current accessibility : DSI0 : GRAYSCALE ") || !contents.compare("4");
}
Return<bool> ReadingEnhancement::setEnabled(bool enabled) {
return WriteStringToFile(enabled ? "4" : "0", kREPath, true);
}
// Methods from ::android::hidl::base::V1_0::IBase follow.
} // namespace samsung
} // namespace V2_0
} // namespace livedisplay
} // namespace lineage
} // namespace vendor