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/*
* Copyright (C) 2016 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.data.epg;
import android.support.annotation.AnyThread;
import android.support.annotation.NonNull;
import android.support.annotation.WorkerThread;
import com.android.tv.data.Channel;
import com.android.tv.data.Lineup;
import com.android.tv.data.Program;
import com.android.tv.dvr.data.SeriesInfo;
import java.util.List;
import java.util.Map;
/**
* An interface used to retrieve the EPG data. This class should be used in worker thread.
*/
@WorkerThread
public interface EpgReader {
/**
* Checks if the reader is available.
*/
boolean isAvailable();
/**
* Returns the timestamp of the current EPG.
* The format should be YYYYMMDDHHmmSS as a long value. ex) 20160308141500
*/
long getEpgTimestamp();
/** Sets the region code. */
void setRegionCode(String regionCode);
/** Returns the lineups list. */
List<Lineup> getLineups(@NonNull String postalCode);
/**
* Returns the list of channel numbers (unsorted) for the given lineup. The result is used to
* choose the most appropriate lineup among others by comparing the channel numbers of the
* existing channels on the device.
*/
List<String> getChannelNumbers(@NonNull String lineupId);
/**
* Returns the list of channels for the given lineup. The returned channels should map into the
* existing channels on the device. This method is usually called after selecting the lineup.
*/
List<Channel> getChannels(@NonNull String lineupId);
/** Pre-loads and caches channels for a given lineup. */
void preloadChannels(@NonNull String lineupId);
/**
* Clears cached channels for a given lineup.
*/
@AnyThread
void clearCachedChannels(@NonNull String lineupId);
/**
* Returns the programs for the given channel. Must call {@link #getChannels(String)}
* beforehand. Note that the {@code Program} doesn't have valid program ID because it's not
* retrieved from TvProvider.
*/
List<Program> getPrograms(long channelId);
/**
* Returns the programs for the given channels. Note that the {@code Program} doesn't have valid
* program ID because it's not retrieved from TvProvider. This method is only used to get
* programs for a short duration typically.
*/
Map<Long, List<Program>> getPrograms(@NonNull List<Long> channelIds, long duration);
/** Returns the series information for the given series ID. */
SeriesInfo getSeriesInfo(@NonNull String seriesId);
}
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