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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.dvr;
import android.content.Context;
import android.support.annotation.MainThread;
import android.support.annotation.NonNull;
import android.util.Log;
import android.util.Range;
import com.android.tv.ApplicationSingletons;
import com.android.tv.TvApplication;
import com.android.tv.common.feature.CommonFeatures;
import com.android.tv.common.recording.RecordingCapability;
import com.android.tv.data.Channel;
import com.android.tv.data.ChannelDataManager;
import com.android.tv.data.Program;
import com.android.tv.util.SoftPreconditions;
import com.android.tv.util.Utils;
import java.util.Collections;
import java.util.List;
/**
* DVR manager class to add and remove recordings. UI can modify recording list through this class,
* instead of modifying them directly through {@link DvrDataManager}.
*/
@MainThread
public class DvrManager {
private final static String TAG = "DvrManager";
private final WritableDvrDataManager mDataManager;
private final ChannelDataManager mChannelDataManager;
private final DvrSessionManager mDvrSessionManager;
public DvrManager(Context context) {
SoftPreconditions.checkFeatureEnabled(context, CommonFeatures.DVR, TAG);
ApplicationSingletons appSingletons = TvApplication.getSingletons(context);
mDataManager = (WritableDvrDataManager) appSingletons.getDvrDataManager();
mChannelDataManager = appSingletons.getChannelDataManager();
mDvrSessionManager = appSingletons.getDvrSessionManger();
}
/**
* Schedules a recording for {@code program} instead of the list of recording that conflict.
* @param program the program to record
* @param recordingsToOverride the possible empty list of recordings that will not be recorded
*/
public void addSchedule(Program program, List<Recording> recordingsToOverride) {
Log.i(TAG,
"Adding scheduled recording of " + program + " instead of " + recordingsToOverride);
Collections.sort(recordingsToOverride, Recording.PRIORITY_COMPARATOR);
Channel c = mChannelDataManager.getChannel(program.getChannelId());
long priority = recordingsToOverride.isEmpty() ? Long.MAX_VALUE
: recordingsToOverride.get(0).getPriority() - 1;
Recording r = Recording.builder(c, program)
.setPriority(priority)
.build();
mDataManager.addRecording(r);
}
/**
* Adds a recording schedule with a time range.
*/
public void addSchedule(Channel channel, long startTime, long endTime) {
Log.i(TAG, "Adding scheduled recording of channel" + channel + " starting at " +
Utils.toTimeString(startTime) + " and ending at " + Utils.toTimeString(endTime));
//TODO: handle error cases
Recording r = Recording.builder(channel, startTime, endTime).build();
mDataManager.addRecording(r);
}
/**
* Adds a season recording schedule based on {@code program}.
*/
public void addSeasonSchedule(Program program) {
Log.i(TAG, "Adding season recording of " + program);
// TODO: implement
}
/**
* Removes a scheduled recording or an existing recording.
*/
public void removeRecording(Recording recording) {
Log.i(TAG, "Removing " + recording);
// TODO(DVR): ask the TIS to delete the recording and respond to the result.
mDataManager.removeRecording(recording);
}
/**
* Returns priority ordered list of all scheduled recording that will not be recorded if
* this program is.
*
* <p>Any empty list means there is no conflicts. If there is conflict the program must be
* scheduled to record with a Priority lower than the first Recording in the list returned.
*/
public List<Recording> getScheduledRecordingsThatConflict(Program program) {
//TODO(DVR): move to scheduler.
//TODO(DVR): deal with more than one DvrInputService
List<Recording> overLap = mDataManager.getRecordingsThatOverlapWith(getPeriod(program));
if (!overLap.isEmpty()) {
// TODO(DVR): ignore shows that already won't record.
Channel channel = mChannelDataManager.getChannel(program.getChannelId());
if (channel != null) {
RecordingCapability recordingCapability = mDvrSessionManager
.getRecordingCapability(channel.getInputId());
int remove = Math.max(0, recordingCapability.maxConcurrentTunedSessions - 1);
if (remove >= overLap.size()) {
return Collections.EMPTY_LIST;
}
overLap = overLap.subList(remove, overLap.size() - 1);
}
}
return overLap;
}
@NonNull
private static Range getPeriod(Program program) {
return new Range(program.getStartTimeUtcMillis(), program.getEndTimeUtcMillis());
}
/**
* Checks whether {@code channel} can be tuned without any conflict with existing recordings
* in progress. If there is any conflict, {@code outConflictRecordings} will be filled.
*/
public boolean canTuneTo(Channel channel, List<Recording> outConflictRecordings) {
// TODO: implement
return true;
}
/**
* Returns true is the inputId supports recording.
*/
public boolean canRecord(String inputId) {
RecordingCapability recordingCapability = mDvrSessionManager
.getRecordingCapability(inputId);
return recordingCapability != null && recordingCapability.maxConcurrentTunedSessions > 0;
}
}
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