Erik Gilling | 51e95df | 2013-06-26 11:06:51 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server; |
| 18 | |
| 19 | import android.content.BroadcastReceiver; |
| 20 | import android.content.Context; |
| 21 | import android.content.Intent; |
| 22 | import android.content.IntentFilter; |
| 23 | import android.content.pm.PackageManager; |
| 24 | import android.database.ContentObserver; |
| 25 | import android.hardware.input.InputManager; |
| 26 | import android.hardware.IConsumerIrService; |
| 27 | import android.os.Handler; |
| 28 | import android.os.PowerManager; |
| 29 | import android.os.Process; |
| 30 | import android.os.RemoteException; |
| 31 | import android.os.IBinder; |
| 32 | import android.os.Binder; |
| 33 | import android.os.ServiceManager; |
| 34 | import android.os.SystemClock; |
| 35 | import android.os.UserHandle; |
| 36 | import android.os.WorkSource; |
| 37 | import android.provider.Settings; |
| 38 | import android.provider.Settings.SettingNotFoundException; |
| 39 | import android.util.Slog; |
| 40 | import android.view.InputDevice; |
| 41 | |
| 42 | import java.util.ArrayList; |
| 43 | import java.util.LinkedList; |
| 44 | import java.util.ListIterator; |
| 45 | |
| 46 | public class ConsumerIrService extends IConsumerIrService.Stub { |
| 47 | private static final String TAG = "ConsumerIrService"; |
| 48 | |
| 49 | private static final int MAX_XMIT_TIME = 2000000; /* in microseconds */ |
| 50 | |
| 51 | private static native int halOpen(); |
| 52 | private static native int halTransmit(int halObject, int carrierFrequency, int[] pattern); |
| 53 | private static native int[] halGetCarrierFrequencies(int halObject); |
| 54 | |
| 55 | private final Context mContext; |
| 56 | private final PowerManager.WakeLock mWakeLock; |
| 57 | private final int mHal; |
| 58 | private final Object mHalLock = new Object(); |
| 59 | |
| 60 | ConsumerIrService(Context context) { |
| 61 | mContext = context; |
| 62 | PowerManager pm = (PowerManager)context.getSystemService( |
| 63 | Context.POWER_SERVICE); |
| 64 | mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); |
| 65 | mWakeLock.setReferenceCounted(true); |
| 66 | |
| 67 | mHal = halOpen(); |
| 68 | if (mHal == 0) { |
| 69 | Slog.w(TAG, "No IR HAL loaded"); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public boolean hasIrEmitter() { |
| 75 | return mHal != 0; |
| 76 | } |
| 77 | |
| 78 | private void throwIfNoIrEmitter() { |
| 79 | if (mHal == 0) { |
| 80 | throw new UnsupportedOperationException("IR emitter not available"); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | |
| 85 | @Override |
| 86 | public void transmit(String packageName, int carrierFrequency, int[] pattern) { |
| 87 | if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.TRANSMIT_IR) |
| 88 | != PackageManager.PERMISSION_GRANTED) { |
| 89 | throw new SecurityException("Requires TRANSMIT_IR permission"); |
| 90 | } |
| 91 | |
| 92 | long totalXmitTime = 0; |
| 93 | |
| 94 | for (int slice : pattern) { |
| 95 | if (slice <= 0) { |
| 96 | throw new IllegalArgumentException("Non-positive IR slice"); |
| 97 | } |
| 98 | totalXmitTime += slice; |
| 99 | } |
| 100 | |
| 101 | if (totalXmitTime > MAX_XMIT_TIME ) { |
| 102 | throw new IllegalArgumentException("IR pattern too long"); |
| 103 | } |
| 104 | |
| 105 | throwIfNoIrEmitter(); |
| 106 | |
| 107 | // Right now there is no mechanism to ensure fair queing of IR requests |
| 108 | synchronized (mHalLock) { |
| 109 | int err = halTransmit(mHal, carrierFrequency, pattern); |
| 110 | |
| 111 | if (err < 0) { |
| 112 | Slog.e(TAG, "Error transmitting: " + err); |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | @Override |
| 118 | public int[] getCarrierFrequencies() { |
| 119 | if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.TRANSMIT_IR) |
| 120 | != PackageManager.PERMISSION_GRANTED) { |
| 121 | throw new SecurityException("Requires TRANSMIT_IR permission"); |
| 122 | } |
| 123 | |
| 124 | throwIfNoIrEmitter(); |
| 125 | |
| 126 | synchronized(mHalLock) { |
| 127 | return halGetCarrierFrequencies(mHal); |
| 128 | } |
| 129 | } |
| 130 | } |