android_device_oneplus_dre/lineagehw/src/org/lineageos/hardware/SunlightEnhancement.java
Bruno Martins a92b254623 sdm845-common: Adapt for local LineageHW java overlays
Change-Id: Icb2b9810217f4b4d442ab83a16f455bd2ed82071
2018-10-14 14:34:09 +02:00

86 lines
2.8 KiB
Java

/*
* Copyright (C) 2014 The CyanogenMod Project
* Copyright (C) 2018 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.
*/
package org.lineageos.hardware;
import android.util.Log;
import org.lineageos.internal.util.FileUtils;
public class SunlightEnhancement {
private static final String TAG = "SunlightEnhancement";
private static final String HBM_PATH =
"/sys/devices/platform/soc/ae00000.qcom,mdss_mdp/main_display/hbm";
/**
* Whether device supports sunlight enhancement
*
* @return boolean Supported devices must return always true
*/
public static boolean isSupported() {
return FileUtils.isFileWritable(HBM_PATH);
}
/**
* This method return the current activation status of sunlight enhancement
*
* @return boolean Must be false when sunlight enhancement is not supported or not activated,
* or the operation failed while reading the status; true in any other case.
*/
public static boolean isEnabled() {
try {
return Integer.parseInt(FileUtils.readOneLine(HBM_PATH)) > 0;
} catch (Exception e) {
Log.e(TAG, e.getMessage(), e);
}
return false;
}
/**
* This method allows to setup sunlight enhancement
*
* @param status The new sunlight enhancement status
* @return boolean Must be false if sunlight enhancement is not supported or the operation
* failed; true in any other case.
*/
public static boolean setEnabled(boolean status) {
return FileUtils.writeLine(HBM_PATH, status ? "3" : "0");
}
/**
* Whether adaptive backlight (CABL / CABC) is required to be enabled
*
* @return boolean False if adaptive backlight is not a dependency
*/
public static boolean isAdaptiveBacklightRequired() {
return false;
}
/**
* Set this to true if the implementation is self-managed and does
* it's own ambient sensing. In this case, setEnabled is assumed
* to toggle the feature on or off, but not activate it. If set
* to false, LiveDisplay will call setEnabled when the ambient lux
* threshold is crossed.
*
* @return true if this enhancement is self-managed
*/
public static boolean isSelfManaged() {
return false;
}
}