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/*
* Copyright (C) 2013 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.hardware.util.FileUtils;
import java.io.File;
public class DisplayColorCalibration {
private static final String[] COLOR_FILE = new String[] {
"/sys/class/misc/samoled_color/red_multiplier",
"/sys/class/misc/samoled_color/green_multiplier",
"/sys/class/misc/samoled_color/blue_multiplier"
};
private static final String COLOR_FILE_V2 = "/sys/class/misc/colorcontrol/multiplier";
public static boolean isSupported() {
if (new File(COLOR_FILE_V2).exists()) {
return true;
}
for (String filePath : COLOR_FILE) {
if (!new File(filePath).exists()) {
return false;
}
}
return true;
}
public static int getMaxValue() {
return 2000000000; // Real value: 4000000000
}
public static int getMinValue() {
return 0;
}
public static int getDefValue() {
return 1000000000; // Real value: 2000000000
}
public static String getCurColors() {
StringBuilder values = new StringBuilder();
if (new File(COLOR_FILE_V2).exists()) {
String[] valuesSplit = FileUtils.readOneLine(COLOR_FILE_V2).split(" ");
for (int i = 0; i < valuesSplit.length; i++) {
values.append(Long.toString(Long.valueOf(valuesSplit[i]) / 2)).append(" ");
}
} else {
for (String filePath : COLOR_FILE) {
values.append(Long.toString(Long.valueOf(
FileUtils.readOneLine(filePath)) / 2)).append(" ");
}
}
return values.toString();
}
public static boolean setColors(String colors) {
String[] valuesSplit = colors.split(" ");
if (new File(COLOR_FILE_V2).exists()) {
StringBuilder realColors = new StringBuilder();
for (int i = 0; i < valuesSplit.length; i++) {
realColors.append(Long.toString(Long.valueOf(valuesSplit[i]) * 2)).append(" ");
}
return FileUtils.writeLine(COLOR_FILE_V2, realColors.toString());
} else {
boolean result = true;
for (int i = 0; i < valuesSplit.length; i++) {
String targetFile = COLOR_FILE[i];
result &= FileUtils.writeLine(targetFile, Long.toString(
Long.valueOf(valuesSplit[i]) * 2));
}
return result;
}
}
}
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