| /** |
| * Copyright (C) 2017 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.broadcastradio.hal2; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.hardware.broadcastradio.V2_0.IBroadcastRadio; |
| import android.hardware.radio.IAnnouncementListener; |
| import android.hardware.radio.ICloseHandle; |
| import android.hardware.radio.ITuner; |
| import android.hardware.radio.ITunerCallback; |
| import android.hardware.radio.RadioManager; |
| import android.hidl.manager.V1_0.IServiceManager; |
| import android.hidl.manager.V1_0.IServiceNotification; |
| import android.os.IHwBinder.DeathRecipient; |
| import android.os.RemoteException; |
| import android.util.Slog; |
| |
| import com.android.internal.annotations.GuardedBy; |
| |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.stream.Collectors; |
| |
| public class BroadcastRadioService { |
| private static final String TAG = "BcRadio2Srv"; |
| |
| private final Object mLock = new Object(); |
| |
| @GuardedBy("mLock") |
| private int mNextModuleId = 0; |
| |
| @GuardedBy("mLock") |
| private final Map<String, Integer> mServiceNameToModuleIdMap = new HashMap<>(); |
| |
| @GuardedBy("mLock") |
| private final Map<Integer, RadioModule> mModules = new HashMap<>(); |
| |
| private IServiceNotification.Stub mServiceListener = new IServiceNotification.Stub() { |
| @Override |
| public void onRegistration(String fqName, String serviceName, boolean preexisting) { |
| Slog.v(TAG, "onRegistration(" + fqName + ", " + serviceName + ", " + preexisting + ")"); |
| Integer moduleId; |
| synchronized (mLock) { |
| // If the service has been registered before, reuse its previous module ID. |
| moduleId = mServiceNameToModuleIdMap.get(serviceName); |
| boolean newService = false; |
| if (moduleId == null) { |
| newService = true; |
| moduleId = mNextModuleId; |
| } |
| |
| RadioModule module = RadioModule.tryLoadingModule(moduleId, serviceName); |
| if (module == null) { |
| return; |
| } |
| Slog.v(TAG, "loaded broadcast radio module " + moduleId + ": " + serviceName |
| + " (HAL 2.0)"); |
| mModules.put(moduleId, module); |
| |
| if (newService) { |
| mServiceNameToModuleIdMap.put(serviceName, moduleId); |
| mNextModuleId++; |
| } |
| |
| try { |
| module.getService().linkToDeath(mDeathRecipient, moduleId); |
| } catch (RemoteException ex) { |
| // Service has already died, so remove its entry from mModules. |
| mModules.remove(moduleId); |
| } |
| } |
| } |
| }; |
| |
| private DeathRecipient mDeathRecipient = new DeathRecipient() { |
| @Override |
| public void serviceDied(long cookie) { |
| Slog.v(TAG, "serviceDied(" + cookie + ")"); |
| synchronized (mLock) { |
| int moduleId = (int) cookie; |
| mModules.remove(moduleId); |
| |
| for (Map.Entry<String, Integer> entry : mServiceNameToModuleIdMap.entrySet()) { |
| if (entry.getValue() == moduleId) { |
| Slog.i(TAG, "service " + entry.getKey() |
| + " died; removed RadioModule with ID " + moduleId); |
| return; |
| } |
| } |
| } |
| } |
| }; |
| |
| public BroadcastRadioService(int nextModuleId) { |
| mNextModuleId = nextModuleId; |
| try { |
| IServiceManager manager = IServiceManager.getService(); |
| if (manager == null) { |
| Slog.e(TAG, "failed to get HIDL Service Manager"); |
| return; |
| } |
| manager.registerForNotifications(IBroadcastRadio.kInterfaceName, "", mServiceListener); |
| } catch (RemoteException ex) { |
| Slog.e(TAG, "failed to register for service notifications: ", ex); |
| } |
| } |
| |
| public @NonNull Collection<RadioManager.ModuleProperties> listModules() { |
| synchronized (mLock) { |
| return mModules.values().stream().map(module -> module.mProperties) |
| .collect(Collectors.toList()); |
| } |
| } |
| |
| public boolean hasModule(int id) { |
| synchronized (mLock) { |
| return mModules.containsKey(id); |
| } |
| } |
| |
| public boolean hasAnyModules() { |
| synchronized (mLock) { |
| return !mModules.isEmpty(); |
| } |
| } |
| |
| public ITuner openSession(int moduleId, @Nullable RadioManager.BandConfig legacyConfig, |
| boolean withAudio, @NonNull ITunerCallback callback) throws RemoteException { |
| Objects.requireNonNull(callback); |
| |
| if (!withAudio) { |
| throw new IllegalArgumentException("Non-audio sessions not supported with HAL 2.x"); |
| } |
| |
| RadioModule module = null; |
| synchronized (mLock) { |
| module = mModules.get(moduleId); |
| } |
| if (module == null) { |
| throw new IllegalArgumentException("Invalid module ID"); |
| } |
| |
| TunerSession session = module.openSession(callback); |
| if (legacyConfig != null) { |
| session.setConfiguration(legacyConfig); |
| } |
| return session; |
| } |
| |
| public ICloseHandle addAnnouncementListener(@NonNull int[] enabledTypes, |
| @NonNull IAnnouncementListener listener) { |
| AnnouncementAggregator aggregator = new AnnouncementAggregator(listener); |
| boolean anySupported = false; |
| synchronized (mLock) { |
| for (RadioModule module : mModules.values()) { |
| try { |
| aggregator.watchModule(module, enabledTypes); |
| anySupported = true; |
| } catch (UnsupportedOperationException ex) { |
| Slog.v(TAG, "Announcements not supported for this module", ex); |
| } |
| } |
| } |
| if (!anySupported) { |
| Slog.i(TAG, "There are no HAL modules that support announcements"); |
| } |
| return aggregator; |
| } |
| } |