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.recommendation; 18 19 import android.content.Context; 20 import android.support.annotation.GuardedBy; 21 import android.support.annotation.VisibleForTesting; 22 import com.android.tv.TvSingletons; 23 import com.android.tv.data.Program; 24 import com.android.tv.data.ProgramDataManager; 25 import com.android.tv.data.api.Channel; 26 import java.util.ArrayDeque; 27 import java.util.Deque; 28 29 public class ChannelRecord { 30 // TODO: decide the value for max history size. 31 @VisibleForTesting static final int MAX_HISTORY_SIZE = 100; 32 private final Context mContext; 33 34 @GuardedBy("this") 35 private final Deque<WatchedProgram> mWatchHistory; 36 37 private Program mCurrentProgram; 38 private Channel mChannel; 39 private long mTotalWatchDurationMs; 40 private boolean mInputRemoved; 41 ChannelRecord(Context context, Channel channel, boolean inputRemoved)42 public ChannelRecord(Context context, Channel channel, boolean inputRemoved) { 43 mContext = context; 44 mChannel = channel; 45 mWatchHistory = new ArrayDeque<>(); 46 mInputRemoved = inputRemoved; 47 } 48 getChannel()49 public Channel getChannel() { 50 return mChannel; 51 } 52 setChannel(Channel channel, boolean inputRemoved)53 public void setChannel(Channel channel, boolean inputRemoved) { 54 mChannel = channel; 55 mInputRemoved = inputRemoved; 56 } 57 isInputRemoved()58 public boolean isInputRemoved() { 59 return mInputRemoved; 60 } 61 setInputRemoved(boolean removed)62 public void setInputRemoved(boolean removed) { 63 mInputRemoved = removed; 64 } 65 getLastWatchEndTimeMs()66 public synchronized long getLastWatchEndTimeMs() { 67 WatchedProgram p = mWatchHistory.peekLast(); 68 return (p == null) ? 0 : p.getWatchEndTimeMs(); 69 } 70 getCurrentProgram()71 public Program getCurrentProgram() { 72 long time = System.currentTimeMillis(); 73 if (mCurrentProgram == null || mCurrentProgram.getEndTimeUtcMillis() < time) { 74 ProgramDataManager manager = 75 TvSingletons.getSingletons(mContext).getProgramDataManager(); 76 mCurrentProgram = manager.getCurrentProgram(mChannel.getId()); 77 } 78 return mCurrentProgram; 79 } 80 getTotalWatchDurationMs()81 public long getTotalWatchDurationMs() { 82 return mTotalWatchDurationMs; 83 } 84 getWatchHistory()85 public final synchronized WatchedProgram[] getWatchHistory() { 86 return mWatchHistory.toArray(new WatchedProgram[mWatchHistory.size()]); 87 } 88 logWatchHistory(WatchedProgram p)89 public synchronized void logWatchHistory(WatchedProgram p) { 90 mWatchHistory.offer(p); 91 mTotalWatchDurationMs += p.getWatchedDurationMs(); 92 if (mWatchHistory.size() > MAX_HISTORY_SIZE) { 93 WatchedProgram program = mWatchHistory.poll(); 94 mTotalWatchDurationMs -= program.getWatchedDurationMs(); 95 } 96 } 97 } 98