| /* |
| * 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.recommendation; |
| |
| import android.content.Context; |
| import android.support.annotation.GuardedBy; |
| import android.support.annotation.VisibleForTesting; |
| |
| import com.android.tv.TvSingletons; |
| import com.android.tv.data.ProgramDataManager; |
| import com.android.tv.data.api.Channel; |
| import com.android.tv.data.api.Program; |
| |
| import java.util.ArrayDeque; |
| import java.util.Deque; |
| |
| public class ChannelRecord { |
| // TODO: decide the value for max history size. |
| @VisibleForTesting static final int MAX_HISTORY_SIZE = 100; |
| private final Context mContext; |
| |
| @GuardedBy("this") |
| private final Deque<WatchedProgram> mWatchHistory; |
| |
| private Program mCurrentProgram; |
| private Channel mChannel; |
| private long mTotalWatchDurationMs; |
| private boolean mInputRemoved; |
| |
| public ChannelRecord(Context context, Channel channel, boolean inputRemoved) { |
| mContext = context; |
| mChannel = channel; |
| mWatchHistory = new ArrayDeque<>(); |
| mInputRemoved = inputRemoved; |
| } |
| |
| public Channel getChannel() { |
| return mChannel; |
| } |
| |
| public void setChannel(Channel channel, boolean inputRemoved) { |
| mChannel = channel; |
| mInputRemoved = inputRemoved; |
| } |
| |
| public boolean isInputRemoved() { |
| return mInputRemoved; |
| } |
| |
| public void setInputRemoved(boolean removed) { |
| mInputRemoved = removed; |
| } |
| |
| public synchronized long getLastWatchEndTimeMs() { |
| WatchedProgram p = mWatchHistory.peekLast(); |
| return (p == null) ? 0 : p.getWatchEndTimeMs(); |
| } |
| |
| public Program getCurrentProgram() { |
| long time = System.currentTimeMillis(); |
| if (mCurrentProgram == null || mCurrentProgram.getEndTimeUtcMillis() < time) { |
| ProgramDataManager manager = |
| TvSingletons.getSingletons(mContext).getProgramDataManager(); |
| mCurrentProgram = manager.getCurrentProgram(mChannel.getId()); |
| } |
| return mCurrentProgram; |
| } |
| |
| public long getTotalWatchDurationMs() { |
| return mTotalWatchDurationMs; |
| } |
| |
| public final synchronized WatchedProgram[] getWatchHistory() { |
| return mWatchHistory.toArray(new WatchedProgram[mWatchHistory.size()]); |
| } |
| |
| public synchronized void logWatchHistory(WatchedProgram p) { |
| mWatchHistory.offer(p); |
| mTotalWatchDurationMs += p.getWatchedDurationMs(); |
| if (mWatchHistory.size() > MAX_HISTORY_SIZE) { |
| WatchedProgram program = mWatchHistory.poll(); |
| mTotalWatchDurationMs -= program.getWatchedDurationMs(); |
| } |
| } |
| } |