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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.lights;
import com.android.server.SystemService;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Handler;
import android.os.IHardwareService;
import android.os.Message;
import android.util.Slog;
import java.io.FileInputStream;
import java.io.FileOutputStream;
public class LightsService extends SystemService {
static final String TAG = "LightsService";
static final boolean DEBUG = false;
final LightImpl mLights[] = new LightImpl[LightsManager.LIGHT_ID_COUNT];
private final class LightImpl extends Light {
private LightImpl(int id) {
mId = id;
}
@Override
public void setBrightness(int brightness) {
setBrightness(brightness, BRIGHTNESS_MODE_USER);
}
@Override
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);
}
}
@Override
public void setColor(int color) {
synchronized (this) {
setLightLocked(color, LIGHT_FLASH_NONE, 0, 0, 0);
}
}
@Override
public void setFlashing(int color, int mode, int onMS, int offMS) {
synchronized (this) {
setLightLocked(color, mode, onMS, offMS, BRIGHTNESS_MODE_USER);
}
}
@Override
public void pulse() {
pulse(0x00ffffff, 7);
}
@Override
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);
}
}
}
@Override
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) {
if (DEBUG) Slog.v(TAG, "setLight #" + mId + ": color=#"
+ Integer.toHexString(color));
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() {
private static final String FLASHLIGHT_FILE = "/sys/class/leds/spotlight/brightness";
public boolean getFlashlightEnabled() {
try {
FileInputStream fis = new FileInputStream(FLASHLIGHT_FILE);
int result = fis.read();
fis.close();
return (result != '0');
} catch (Exception e) {
return false;
}
}
public void setFlashlightEnabled(boolean on) {
final Context context = getContext();
if (context.checkCallingOrSelfPermission(android.Manifest.permission.FLASHLIGHT)
!= PackageManager.PERMISSION_GRANTED &&
context.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) {
// fail silently
}
}
};
@Override
public void onCreate(Context context) {
mNativePointer = init_native();
for (int i = 0; i < LightsManager.LIGHT_ID_COUNT; i++) {
mLights[i] = new LightImpl(i);
}
}
@Override
public void onStart() {
publishBinderService("hardware", mLegacyFlashlightHack);
publishLocalService(LightsManager.class, mService);
}
private final LightsManager mService = new LightsManager() {
@Override
public com.android.server.lights.Light getLight(int id) {
if (id < LIGHT_ID_COUNT) {
return mLights[id];
} else {
return null;
}
}
};
protected void finalize() throws Throwable {
finalize_native(mNativePointer);
super.finalize();
}
private Handler mH = new Handler() {
@Override
public void handleMessage(Message msg) {
LightImpl light = (LightImpl)msg.obj;
light.stopFlashing();
}
};
private static native int init_native();
private static native void finalize_native(int ptr);
static native void setLight_native(int ptr, int light, int color, int mode,
int onMS, int offMS, int brightnessMode);
int mNativePointer;
}
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