| /* |
| * 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.dvr; |
| |
| import android.content.Context; |
| import android.content.SharedPreferences; |
| import android.media.tv.TvInputManager; |
| import android.support.annotation.IntDef; |
| import com.android.tv.common.util.SharedPreferencesUtils; |
| import com.android.tv.dvr.data.RecordedProgram; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.CopyOnWriteArraySet; |
| |
| /** |
| * A class to manage DVR watched state. It will remember and provides previous watched position of |
| * DVR playback. |
| */ |
| public class DvrWatchedPositionManager { |
| private SharedPreferences mWatchedPositions; |
| private final Map<Long, Set> mListeners = new HashMap<>(); |
| |
| /** |
| * The minimum percentage of recorded program being watched that will be considered as being |
| * completely watched. |
| */ |
| public static final float DVR_WATCHED_THRESHOLD_RATE = 0.98f; |
| |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef({DVR_WATCHED_STATUS_NEW, DVR_WATCHED_STATUS_WATCHING, DVR_WATCHED_STATUS_WATCHED}) |
| public @interface DvrWatchedStatus {} |
| /** The status indicates the recorded program has not been watched at all. */ |
| public static final int DVR_WATCHED_STATUS_NEW = 0; |
| /** The status indicates the recorded program is being watched. */ |
| public static final int DVR_WATCHED_STATUS_WATCHING = 1; |
| /** The status indicates the recorded program was completely watched. */ |
| public static final int DVR_WATCHED_STATUS_WATCHED = 2; |
| |
| public DvrWatchedPositionManager(Context context) { |
| mWatchedPositions = |
| context.getSharedPreferences( |
| SharedPreferencesUtils.SHARED_PREF_DVR_WATCHED_POSITION, |
| Context.MODE_PRIVATE); |
| } |
| |
| /** Sets the watched position of the give program. */ |
| public void setWatchedPosition(long recordedProgramId, long positionMs) { |
| mWatchedPositions.edit().putLong(Long.toString(recordedProgramId), positionMs).apply(); |
| notifyWatchedPositionChanged(recordedProgramId, positionMs); |
| } |
| |
| /** Gets the watched position of the give program. */ |
| public long getWatchedPosition(long recordedProgramId) { |
| return mWatchedPositions.getLong( |
| Long.toString(recordedProgramId), TvInputManager.TIME_SHIFT_INVALID_TIME); |
| } |
| |
| @DvrWatchedStatus |
| public int getWatchedStatus(RecordedProgram recordedProgram) { |
| long watchedPosition = getWatchedPosition(recordedProgram.getId()); |
| if (watchedPosition == TvInputManager.TIME_SHIFT_INVALID_TIME) { |
| return DVR_WATCHED_STATUS_NEW; |
| } else if (watchedPosition |
| > recordedProgram.getDurationMillis() * DVR_WATCHED_THRESHOLD_RATE) { |
| return DVR_WATCHED_STATUS_WATCHED; |
| } else { |
| return DVR_WATCHED_STATUS_WATCHING; |
| } |
| } |
| |
| /** Adds {@link WatchedPositionChangedListener}. */ |
| public void addListener(WatchedPositionChangedListener listener, long recordedProgramId) { |
| if (recordedProgramId == RecordedProgram.ID_NOT_SET) { |
| return; |
| } |
| Set<WatchedPositionChangedListener> listenerSet = mListeners.get(recordedProgramId); |
| if (listenerSet == null) { |
| listenerSet = new CopyOnWriteArraySet<>(); |
| mListeners.put(recordedProgramId, listenerSet); |
| } |
| listenerSet.add(listener); |
| } |
| |
| /** Removes {@link WatchedPositionChangedListener}. */ |
| public void removeListener(WatchedPositionChangedListener listener) { |
| for (long recordedProgramId : new ArrayList<>(mListeners.keySet())) { |
| removeListener(listener, recordedProgramId); |
| } |
| } |
| |
| /** Removes {@link WatchedPositionChangedListener}. */ |
| public void removeListener(WatchedPositionChangedListener listener, long recordedProgramId) { |
| Set<WatchedPositionChangedListener> listenerSet = mListeners.get(recordedProgramId); |
| if (listenerSet == null) { |
| return; |
| } |
| listenerSet.remove(listener); |
| if (listenerSet.isEmpty()) { |
| mListeners.remove(recordedProgramId); |
| } |
| } |
| |
| private void notifyWatchedPositionChanged(long recordedProgramId, long positionMs) { |
| Set<WatchedPositionChangedListener> listenerSet = mListeners.get(recordedProgramId); |
| if (listenerSet == null) { |
| return; |
| } |
| for (WatchedPositionChangedListener listener : listenerSet) { |
| listener.onWatchedPositionChanged(recordedProgramId, positionMs); |
| } |
| } |
| |
| public interface WatchedPositionChangedListener { |
| /** Called when the watched position of some program is changed. */ |
| void onWatchedPositionChanged(long recordedProgramId, long positionMs); |
| } |
| } |