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/*
* Copyright (C) 2015 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.tv.tuner.tvinput;
import android.app.job.JobInfo;
import android.app.job.JobScheduler;
import android.content.ComponentName;
import android.content.Context;
import android.media.tv.TvContract;
import android.media.tv.TvInputService;
import android.util.Log;
import com.google.android.exoplayer.audio.AudioCapabilities;
import com.google.android.exoplayer.audio.AudioCapabilitiesReceiver;
import com.android.tv.TvApplication;
import com.android.tv.common.feature.CommonFeatures;
import com.android.tv.tuner.exoplayer.buffer.BufferManager;
import com.android.tv.tuner.exoplayer.buffer.TrickplayStorageManager;
import com.android.tv.tuner.util.SystemPropertiesProxy;
import java.util.Collections;
import java.util.Set;
import java.util.WeakHashMap;
import java.util.concurrent.TimeUnit;
/**
* {@link TunerTvInputService} serves TV channels coming from a tuner device.
*/
public class TunerTvInputService extends TvInputService
implements AudioCapabilitiesReceiver.Listener{
private static final String TAG = "TunerTvInputService";
private static final boolean DEBUG = false;
private static final String MAX_BUFFER_SIZE_KEY = "tv.tuner.buffersize_mbytes";
private static final int MAX_BUFFER_SIZE_DEF = 2 * 1024; // 2GB
private static final int MIN_BUFFER_SIZE_DEF = 256; // 256MB
private static final int DVR_STORAGE_CLEANUP_JOB_ID = 100;
// WeakContainer for {@link TvInputSessionImpl}
private final Set<TunerSession> mTunerSessions = Collections.newSetFromMap(new WeakHashMap<>());
private ChannelDataManager mChannelDataManager;
private AudioCapabilitiesReceiver mAudioCapabilitiesReceiver;
private AudioCapabilities mAudioCapabilities;
private BufferManager mBufferManager;
@Override
public void onCreate() {
TvApplication.setCurrentRunningProcess(this, false);
super.onCreate();
if (DEBUG) Log.d(TAG, "onCreate");
mChannelDataManager = new ChannelDataManager(getApplicationContext());
mAudioCapabilitiesReceiver = new AudioCapabilitiesReceiver(getApplicationContext(), this);
mAudioCapabilitiesReceiver.register();
mBufferManager = createBufferManager();
if (CommonFeatures.DVR.isEnabled(this)) {
JobScheduler jobScheduler =
(JobScheduler) getSystemService(Context.JOB_SCHEDULER_SERVICE);
JobInfo pendingJob = jobScheduler.getPendingJob(DVR_STORAGE_CLEANUP_JOB_ID);
if (pendingJob != null) {
// storage cleaning job is already scheduled.
} else {
JobInfo job = new JobInfo.Builder(DVR_STORAGE_CLEANUP_JOB_ID,
new ComponentName(this, TunerStorageCleanUpService.class))
.setPersisted(true).setPeriodic(TimeUnit.DAYS.toMillis(1)).build();
jobScheduler.schedule(job);
}
}
if (mBufferManager == null) {
Log.i(TAG, "Trickplay is disabled");
} else {
Log.i(TAG, "Trickplay is enabled");
}
}
@Override
public void onDestroy() {
if (DEBUG) Log.d(TAG, "onDestroy");
super.onDestroy();
mChannelDataManager.release();
mAudioCapabilitiesReceiver.unregister();
if (mBufferManager != null) {
mBufferManager.close();
}
}
@Override
public RecordingSession onCreateRecordingSession(String inputId) {
return new TunerRecordingSession(this, inputId, mChannelDataManager);
}
@Override
public Session onCreateSession(String inputId) {
if (DEBUG) Log.d(TAG, "onCreateSession");
try {
final TunerSession session = new TunerSession(
this, mChannelDataManager, mBufferManager);
mTunerSessions.add(session);
session.setAudioCapabilities(mAudioCapabilities);
session.setOverlayViewEnabled(true);
return session;
} catch (RuntimeException e) {
// There are no available DVB devices.
Log.e(TAG, "Creating a session for " + inputId + " failed.", e);
return null;
}
}
@Override
public void onAudioCapabilitiesChanged(AudioCapabilities audioCapabilities) {
mAudioCapabilities = audioCapabilities;
for (TunerSession session : mTunerSessions) {
if (!session.isReleased()) {
session.setAudioCapabilities(audioCapabilities);
}
}
}
private BufferManager createBufferManager() {
int maxBufferSizeMb =
SystemPropertiesProxy.getInt(MAX_BUFFER_SIZE_KEY, MAX_BUFFER_SIZE_DEF);
if (maxBufferSizeMb >= MIN_BUFFER_SIZE_DEF) {
return new BufferManager(
new TrickplayStorageManager(getApplicationContext(), getCacheDir(),
1024L * 1024 * maxBufferSizeMb));
}
return null;
}
public static String getInputId(Context context) {
return TvContract.buildInputId(new ComponentName(context, TunerTvInputService.class));
}
}
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