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/*
* Copyright (C) 2008 The Android Open Source 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 com.android.server;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Handler;
import android.os.IHardwareService;
import android.os.ServiceManager;
import android.os.Message;
import android.util.Slog;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
public class LightsService {
private static final String TAG = "LightsService";
static final int LIGHT_ID_BACKLIGHT = 0;
static final int LIGHT_ID_KEYBOARD = 1;
static final int LIGHT_ID_BUTTONS = 2;
static final int LIGHT_ID_BATTERY = 3;
static final int LIGHT_ID_NOTIFICATIONS = 4;
static final int LIGHT_ID_ATTENTION = 5;
static final int LIGHT_ID_BLUETOOTH = 6;
static final int LIGHT_ID_WIFI = 7;
static final int LIGHT_ID_CAPS = 8;
static final int LIGHT_ID_FUNC = 9;
static final int LIGHT_ID_WIMAX = 10;
static final int LIGHT_ID_FLASHLIGHT = 11;
static final int LIGHT_ID_COUNT = 12;
static final int LIGHT_FLASH_NONE = 0;
static final int LIGHT_FLASH_TIMED = 1;
static final int LIGHT_FLASH_HARDWARE = 2;
/**
* Light brightness is managed by a user setting.
*/
static final int BRIGHTNESS_MODE_USER = 0;
/**
* Light brightness is managed by a light sensor.
*/
static final int BRIGHTNESS_MODE_SENSOR = 1;
private final Light mLights[] = new Light[LIGHT_ID_COUNT];
private static final String FLASHLIGHT_FILE;
private static final String FLASHLIGHT_FILE_SPOTLIGHT = "/sys/class/leds/spotlight/brightness";
static {
File ff = new File(FLASHLIGHT_FILE_SPOTLIGHT);
if (ff.exists()) {
FLASHLIGHT_FILE = FLASHLIGHT_FILE_SPOTLIGHT;
} else {
FLASHLIGHT_FILE = "/sys/class/leds/flashlight/brightness";
}
}
public final class Light {
private Light(int id) {
mId = id;
}
public void setBrightness(int brightness) {
setBrightness(brightness, BRIGHTNESS_MODE_USER);
}
public void setBrightness(int brightness, int brightnessMode) {
synchronized (this) {
int color = brightness & 0x000000ff;
color = 0xff000000 | (color << 16) | (color << 8) | color;
setLightLocked(color, LIGHT_FLASH_NONE, 0, 0, brightnessMode);
}
}
public void setColor(int color) {
synchronized (this) {
setLightLocked(color, LIGHT_FLASH_NONE, 0, 0, 0);
}
}
public void setFlashing(int color, int mode, int onMS, int offMS) {
synchronized (this) {
setLightLocked(color, mode, onMS, offMS, BRIGHTNESS_MODE_USER);
}
}
public void pulse() {
pulse(0x00ffffff, 7);
}
public void pulse(int color, int onMS) {
synchronized (this) {
if (mColor == 0 && !mFlashing) {
setLightLocked(color, LIGHT_FLASH_HARDWARE, onMS, 1000, BRIGHTNESS_MODE_USER);
mH.sendMessageDelayed(Message.obtain(mH, 1, this), onMS);
}
}
}
public void notificationPulse(int color, int onMs, int offMs) {
synchronized (this) {
setLightLocked(color, LIGHT_FLASH_TIMED, onMs, offMs, BRIGHTNESS_MODE_USER);
mH.sendMessageDelayed(Message.obtain(mH, 1, this), onMs);
}
}
public void turnOff() {
synchronized (this) {
setLightLocked(0, LIGHT_FLASH_NONE, 0, 0, 0);
}
}
private void stopFlashing() {
synchronized (this) {
setLightLocked(mColor, LIGHT_FLASH_NONE, 0, 0, BRIGHTNESS_MODE_USER);
}
}
private void setLightLocked(int color, int mode, int onMS, int offMS, int brightnessMode) {
if (color != mColor || mode != mMode || onMS != mOnMS || offMS != mOffMS) {
mColor = color;
mMode = mode;
mOnMS = onMS;
mOffMS = offMS;
setLight_native(mNativePointer, mId, color, mode, onMS, offMS, brightnessMode);
}
}
private int mId;
private int mColor;
private int mMode;
private int mOnMS;
private int mOffMS;
private boolean mFlashing;
}
/* This class implements an obsolete API that was removed after eclair and re-added during the
* final moments of the froyo release to support flashlight apps that had been using the private
* IHardwareService API. This is expected to go away in the next release.
*/
private final IHardwareService.Stub mLegacyFlashlightHack = new IHardwareService.Stub() {
public boolean getFlashlightEnabled() {
try {
FileInputStream fis = new FileInputStream(FLASHLIGHT_FILE);
int result = fis.read();
fis.close();
return (result != '0');
} catch (Exception e) {
Slog.e(TAG, "getFlashlightEnabled failed", e);
return false;
}
}
public void setFlashlightEnabled(boolean on) {
if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.FLASHLIGHT)
!= PackageManager.PERMISSION_GRANTED &&
mContext.checkCallingOrSelfPermission(android.Manifest.permission.HARDWARE_TEST)
!= PackageManager.PERMISSION_GRANTED) {
throw new SecurityException("Requires FLASHLIGHT or HARDWARE_TEST permission");
}
try {
FileOutputStream fos = new FileOutputStream(FLASHLIGHT_FILE);
byte[] bytes = new byte[2];
bytes[0] = (byte)(on ? '1' : '0');
bytes[1] = '\n';
fos.write(bytes);
fos.close();
} catch (Exception e) {
Slog.e(TAG, "setFlashlightEnabled failed", e);
}
}
};
LightsService(Context context) {
mNativePointer = init_native();
mContext = context;
ServiceManager.addService("hardware", mLegacyFlashlightHack);
for (int i = 0; i < LIGHT_ID_COUNT; i++) {
mLights[i] = new Light(i);
}
}
protected void finalize() throws Throwable {
finalize_native(mNativePointer);
super.finalize();
}
public Light getLight(int id) {
return mLights[id];
}
private Handler mH = new Handler() {
@Override
public void handleMessage(Message msg) {
Light light = (Light)msg.obj;
light.turnOff();
}
};
private static native int init_native();
private static native void finalize_native(int ptr);
private static native void setLight_native(int ptr, int light, int color, int mode,
int onMS, int offMS, int brightnessMode);
private final Context mContext;
private int mNativePointer;
}
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