1 /** 2 * Copyright (C) 2017 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.broadcastradio; 18 19 import android.Manifest; 20 import android.content.Context; 21 import android.content.pm.PackageManager; 22 import android.hardware.radio.IAnnouncementListener; 23 import android.hardware.radio.ICloseHandle; 24 import android.hardware.radio.IRadioService; 25 import android.hardware.radio.ITuner; 26 import android.hardware.radio.ITunerCallback; 27 import android.hardware.radio.RadioManager; 28 import android.os.RemoteException; 29 import android.util.IndentingPrintWriter; 30 import android.util.Slog; 31 32 import com.android.server.SystemService; 33 import com.android.server.broadcastradio.hal2.AnnouncementAggregator; 34 35 import java.io.FileDescriptor; 36 import java.io.PrintWriter; 37 import java.util.ArrayList; 38 import java.util.Arrays; 39 import java.util.List; 40 import java.util.Objects; 41 import java.util.OptionalInt; 42 43 public class BroadcastRadioService extends SystemService { 44 private static final String TAG = "BcRadioSrv"; 45 46 private final ServiceImpl mServiceImpl = new ServiceImpl(); 47 48 private final com.android.server.broadcastradio.hal1.BroadcastRadioService mHal1; 49 private final com.android.server.broadcastradio.hal2.BroadcastRadioService mHal2; 50 51 private final Object mLock = new Object(); 52 private final List<RadioManager.ModuleProperties> mV1Modules; 53 BroadcastRadioService(Context context)54 public BroadcastRadioService(Context context) { 55 super(context); 56 57 mHal1 = new com.android.server.broadcastradio.hal1.BroadcastRadioService(mLock); 58 mV1Modules = mHal1.loadModules(); 59 OptionalInt max = mV1Modules.stream().mapToInt(RadioManager.ModuleProperties::getId).max(); 60 mHal2 = new com.android.server.broadcastradio.hal2.BroadcastRadioService( 61 max.isPresent() ? max.getAsInt() + 1 : 0, mLock); 62 } 63 64 @Override onStart()65 public void onStart() { 66 publishBinderService(Context.RADIO_SERVICE, mServiceImpl); 67 } 68 69 private class ServiceImpl extends IRadioService.Stub { enforcePolicyAccess()70 private void enforcePolicyAccess() { 71 if (PackageManager.PERMISSION_GRANTED != getContext().checkCallingPermission( 72 Manifest.permission.ACCESS_BROADCAST_RADIO)) { 73 throw new SecurityException("ACCESS_BROADCAST_RADIO permission not granted"); 74 } 75 } 76 77 @Override listModules()78 public List<RadioManager.ModuleProperties> listModules() { 79 Slog.v(TAG, "Listing HIDL modules"); 80 enforcePolicyAccess(); 81 List<RadioManager.ModuleProperties> modules = new ArrayList<>(); 82 modules.addAll(mV1Modules); 83 modules.addAll(mHal2.listModules()); 84 return modules; 85 } 86 87 @Override openTuner(int moduleId, RadioManager.BandConfig bandConfig, boolean withAudio, ITunerCallback callback)88 public ITuner openTuner(int moduleId, RadioManager.BandConfig bandConfig, 89 boolean withAudio, ITunerCallback callback) throws RemoteException { 90 Slog.v(TAG, "Opening module " + moduleId); 91 enforcePolicyAccess(); 92 if (callback == null) { 93 throw new IllegalArgumentException("Callback must not be empty"); 94 } 95 synchronized (mLock) { 96 if (mHal2.hasModule(moduleId)) { 97 return mHal2.openSession(moduleId, bandConfig, withAudio, callback); 98 } else { 99 return mHal1.openTuner(moduleId, bandConfig, withAudio, callback); 100 } 101 } 102 } 103 104 @Override addAnnouncementListener(int[] enabledTypes, IAnnouncementListener listener)105 public ICloseHandle addAnnouncementListener(int[] enabledTypes, 106 IAnnouncementListener listener) { 107 Slog.v(TAG, "Adding announcement listener for " + Arrays.toString(enabledTypes)); 108 Objects.requireNonNull(enabledTypes); 109 Objects.requireNonNull(listener); 110 enforcePolicyAccess(); 111 112 synchronized (mLock) { 113 if (!mHal2.hasAnyModules()) { 114 Slog.i(TAG, "There are no HAL 2.0 modules registered"); 115 return new AnnouncementAggregator(listener, mLock); 116 } 117 118 return mHal2.addAnnouncementListener(enabledTypes, listener); 119 } 120 } 121 122 @Override dump(FileDescriptor fd, PrintWriter pw, String[] args)123 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 124 IndentingPrintWriter radioPw = new IndentingPrintWriter(pw); 125 radioPw.printf("BroadcastRadioService\n"); 126 radioPw.increaseIndent(); 127 radioPw.printf("HAL1: %s\n", mHal1); 128 radioPw.increaseIndent(); 129 radioPw.printf("Modules of HAL1: %s\n", mV1Modules); 130 radioPw.decreaseIndent(); 131 radioPw.printf("HAL2:\n"); 132 radioPw.increaseIndent(); 133 mHal2.dumpInfo(radioPw); 134 radioPw.decreaseIndent(); 135 radioPw.decreaseIndent(); 136 } 137 } 138 } 139