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      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.hal2;
     18 
     19 import android.annotation.NonNull;
     20 import android.annotation.Nullable;
     21 import android.graphics.Bitmap;
     22 import android.graphics.BitmapFactory;
     23 import android.hardware.radio.ITuner;
     24 import android.hardware.radio.RadioManager;
     25 import android.hardware.broadcastradio.V2_0.AmFmRegionConfig;
     26 import android.hardware.broadcastradio.V2_0.Announcement;
     27 import android.hardware.broadcastradio.V2_0.DabTableEntry;
     28 import android.hardware.broadcastradio.V2_0.IAnnouncementListener;
     29 import android.hardware.broadcastradio.V2_0.IBroadcastRadio;
     30 import android.hardware.broadcastradio.V2_0.ICloseHandle;
     31 import android.hardware.broadcastradio.V2_0.ITunerSession;
     32 import android.hardware.broadcastradio.V2_0.Result;
     33 import android.os.ParcelableException;
     34 import android.os.RemoteException;
     35 import android.util.MutableInt;
     36 import android.util.Slog;
     37 
     38 import java.util.ArrayList;
     39 import java.util.Arrays;
     40 import java.util.List;
     41 import java.util.Objects;
     42 import java.util.stream.Collectors;
     43 
     44 class RadioModule {
     45     private static final String TAG = "BcRadio2Srv.module";
     46 
     47     @NonNull private final IBroadcastRadio mService;
     48     @NonNull public final RadioManager.ModuleProperties mProperties;
     49 
     50     private RadioModule(@NonNull IBroadcastRadio service,
     51             @NonNull RadioManager.ModuleProperties properties) {
     52         mProperties = Objects.requireNonNull(properties);
     53         mService = Objects.requireNonNull(service);
     54     }
     55 
     56     public static @Nullable RadioModule tryLoadingModule(int idx, @NonNull String fqName) {
     57         try {
     58             IBroadcastRadio service = IBroadcastRadio.getService(fqName);
     59             if (service == null) return null;
     60 
     61             Mutable<AmFmRegionConfig> amfmConfig = new Mutable<>();
     62             service.getAmFmRegionConfig(false, (result, config) -> {
     63                 if (result == Result.OK) amfmConfig.value = config;
     64             });
     65 
     66             Mutable<List<DabTableEntry>> dabConfig = new Mutable<>();
     67             service.getDabRegionConfig((result, config) -> {
     68                 if (result == Result.OK) dabConfig.value = config;
     69             });
     70 
     71             RadioManager.ModuleProperties prop = Convert.propertiesFromHal(idx, fqName,
     72                     service.getProperties(), amfmConfig.value, dabConfig.value);
     73 
     74             return new RadioModule(service, prop);
     75         } catch (RemoteException ex) {
     76             Slog.e(TAG, "failed to load module " + fqName, ex);
     77             return null;
     78         }
     79     }
     80 
     81     public @NonNull TunerSession openSession(@NonNull android.hardware.radio.ITunerCallback userCb)
     82             throws RemoteException {
     83         TunerCallback cb = new TunerCallback(Objects.requireNonNull(userCb));
     84         Mutable<ITunerSession> hwSession = new Mutable<>();
     85         MutableInt halResult = new MutableInt(Result.UNKNOWN_ERROR);
     86 
     87         synchronized (mService) {
     88             mService.openSession(cb, (result, session) -> {
     89                 hwSession.value = session;
     90                 halResult.value = result;
     91             });
     92         }
     93 
     94         Convert.throwOnError("openSession", halResult.value);
     95         Objects.requireNonNull(hwSession.value);
     96 
     97         return new TunerSession(this, hwSession.value, cb);
     98     }
     99 
    100     public android.hardware.radio.ICloseHandle addAnnouncementListener(@NonNull int[] enabledTypes,
    101             @NonNull android.hardware.radio.IAnnouncementListener listener) throws RemoteException {
    102         ArrayList<Byte> enabledList = new ArrayList<>();
    103         for (int type : enabledTypes) {
    104             enabledList.add((byte)type);
    105         }
    106 
    107         MutableInt halResult = new MutableInt(Result.UNKNOWN_ERROR);
    108         Mutable<ICloseHandle> hwCloseHandle = new Mutable<>();
    109         IAnnouncementListener hwListener = new IAnnouncementListener.Stub() {
    110             public void onListUpdated(ArrayList<Announcement> hwAnnouncements)
    111                     throws RemoteException {
    112                 listener.onListUpdated(hwAnnouncements.stream().
    113                     map(a -> Convert.announcementFromHal(a)).collect(Collectors.toList()));
    114             }
    115         };
    116 
    117         synchronized (mService) {
    118             mService.registerAnnouncementListener(enabledList, hwListener, (result, closeHnd) -> {
    119                 halResult.value = result;
    120                 hwCloseHandle.value = closeHnd;
    121             });
    122         }
    123         Convert.throwOnError("addAnnouncementListener", halResult.value);
    124 
    125         return new android.hardware.radio.ICloseHandle.Stub() {
    126             public void close() {
    127                 try {
    128                     hwCloseHandle.value.close();
    129                 } catch (RemoteException ex) {
    130                     Slog.e(TAG, "Failed closing announcement listener", ex);
    131                 }
    132             }
    133         };
    134     }
    135 
    136     Bitmap getImage(int id) {
    137         if (id == 0) throw new IllegalArgumentException("Image ID is missing");
    138 
    139         byte[] rawImage;
    140         synchronized (mService) {
    141             List<Byte> rawList = Utils.maybeRethrow(() -> mService.getImage(id));
    142             rawImage = new byte[rawList.size()];
    143             for (int i = 0; i < rawList.size(); i++) {
    144                 rawImage[i] = rawList.get(i);
    145             }
    146         }
    147 
    148         if (rawImage == null || rawImage.length == 0) return null;
    149 
    150         return BitmapFactory.decodeByteArray(rawImage, 0, rawImage.length);
    151     }
    152 }
    153