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      1 /*
      2  * Copyright (C) 2015 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.tv.tuner.tvinput;
     18 
     19 import android.app.job.JobInfo;
     20 import android.app.job.JobScheduler;
     21 import android.content.ComponentName;
     22 import android.content.Context;
     23 import android.media.tv.TvInputService;
     24 import android.util.Log;
     25 import com.android.tv.common.feature.CommonFeatures;
     26 import com.google.android.exoplayer.audio.AudioCapabilities;
     27 import com.google.android.exoplayer.audio.AudioCapabilitiesReceiver;
     28 import java.util.Collections;
     29 import java.util.Set;
     30 import java.util.WeakHashMap;
     31 import java.util.concurrent.TimeUnit;
     32 
     33 /** {@link BaseTunerTvInputService} serves TV channels coming from a tuner device. */
     34 public class BaseTunerTvInputService extends TvInputService
     35         implements AudioCapabilitiesReceiver.Listener {
     36     private static final String TAG = "BaseTunerTvInputService";
     37     private static final boolean DEBUG = false;
     38 
     39     private static final int DVR_STORAGE_CLEANUP_JOB_ID = 100;
     40 
     41     // WeakContainer for {@link TvInputSessionImpl}
     42     private final Set<TunerSession> mTunerSessions = Collections.newSetFromMap(new WeakHashMap<>());
     43     private ChannelDataManager mChannelDataManager;
     44     private AudioCapabilitiesReceiver mAudioCapabilitiesReceiver;
     45     private AudioCapabilities mAudioCapabilities;
     46 
     47     @Override
     48     public void onCreate() {
     49         if (getApplicationContext().getSystemService(Context.TV_INPUT_SERVICE) == null) {
     50             Log.wtf(TAG, "Stopping because device does not have a TvInputManager");
     51             this.stopSelf();
     52             return;
     53         }
     54         super.onCreate();
     55         if (DEBUG) Log.d(TAG, "onCreate");
     56         mChannelDataManager = new ChannelDataManager(getApplicationContext());
     57         mAudioCapabilitiesReceiver = new AudioCapabilitiesReceiver(getApplicationContext(), this);
     58         mAudioCapabilitiesReceiver.register();
     59         if (CommonFeatures.DVR.isEnabled(this)) {
     60             JobScheduler jobScheduler =
     61                     (JobScheduler) getSystemService(Context.JOB_SCHEDULER_SERVICE);
     62             JobInfo pendingJob = jobScheduler.getPendingJob(DVR_STORAGE_CLEANUP_JOB_ID);
     63             if (pendingJob != null) {
     64                 // storage cleaning job is already scheduled.
     65             } else {
     66                 JobInfo job =
     67                         new JobInfo.Builder(
     68                                         DVR_STORAGE_CLEANUP_JOB_ID,
     69                                         new ComponentName(this, TunerStorageCleanUpService.class))
     70                                 .setPersisted(true)
     71                                 .setPeriodic(TimeUnit.DAYS.toMillis(1))
     72                                 .build();
     73                 jobScheduler.schedule(job);
     74             }
     75         }
     76     }
     77 
     78     @Override
     79     public void onDestroy() {
     80         if (DEBUG) Log.d(TAG, "onDestroy");
     81         super.onDestroy();
     82         mChannelDataManager.release();
     83         mAudioCapabilitiesReceiver.unregister();
     84     }
     85 
     86     @Override
     87     public RecordingSession onCreateRecordingSession(String inputId) {
     88         return new TunerRecordingSession(this, inputId, mChannelDataManager);
     89     }
     90 
     91     @Override
     92     public Session onCreateSession(String inputId) {
     93         if (DEBUG) Log.d(TAG, "onCreateSession");
     94         try {
     95             // TODO(b/65445352): Support multiple TunerSessions for multiple tuners
     96             if (!allSessionsReleased()) {
     97                 Log.d(TAG, "abort creating an session");
     98                 return null;
     99             }
    100             final TunerSession session = new TunerSession(this, mChannelDataManager);
    101             mTunerSessions.add(session);
    102             session.setAudioCapabilities(mAudioCapabilities);
    103             session.setOverlayViewEnabled(true);
    104             return session;
    105         } catch (RuntimeException e) {
    106             // There are no available DVB devices.
    107             Log.e(TAG, "Creating a session for " + inputId + " failed.", e);
    108             return null;
    109         }
    110     }
    111 
    112     @Override
    113     public void onAudioCapabilitiesChanged(AudioCapabilities audioCapabilities) {
    114         mAudioCapabilities = audioCapabilities;
    115         for (TunerSession session : mTunerSessions) {
    116             if (!session.isReleased()) {
    117                 session.setAudioCapabilities(audioCapabilities);
    118             }
    119         }
    120     }
    121 
    122     private boolean allSessionsReleased() {
    123         for (TunerSession session : mTunerSessions) {
    124             if (!session.isReleased()) {
    125                 return false;
    126             }
    127         }
    128         return true;
    129     }
    130 }
    131