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/*
* Copyright (C) 2014 The CyanogenMod 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.cyanogenmod.hardware;
import org.cyanogenmod.internal.util.FileUtils;
import android.util.Log;
/**
* Facemelt mode!
*/
public class SunlightEnhancement {
private static final String TAG = "SunlightEnhancement";
private static final String FILE_SRE = "/sys/class/graphics/fb0/sre";
private static final boolean sHasNativeSupport =
LiveDisplayVendorImpl.hasNativeFeature(LiveDisplayVendorImpl.OUTDOOR_MODE);
/**
* Whether device supports SRE
*
* @return boolean Supported devices must return always true
*/
public static boolean isSupported() {
if (sHasNativeSupport) {
return true;
}
return FileUtils.isFileWritable(FILE_SRE);
}
/**
* This method return the current activation status of SRE
*
* @return boolean Must be false when SRE is not supported or not activated, or
* the operation failed while reading the status; true in any other case.
*/
public static boolean isEnabled() {
try {
if (sHasNativeSupport) {
return LiveDisplayVendorImpl.native_isOutdoorModeEnabled();
}
return Integer.parseInt(FileUtils.readOneLine(FILE_SRE)) > 0;
} catch (Exception e) {
Log.e(TAG, e.getMessage(), e);
}
return false;
}
/**
* This method allows to setup SRE
*
* @param status The new SRE status
* @return boolean Must be false if SRE is not supported or the operation
* failed; true in any other case.
*/
public static boolean setEnabled(boolean status) {
if (sHasNativeSupport) {
return LiveDisplayVendorImpl.native_setOutdoorModeEnabled(status);
}
return FileUtils.writeLine(FILE_SRE, status ? "2" : "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;
}
}
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