src/com/owncloud/android/media/MediaServiceBinder.java

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author David A. Velasco
   5  *   Copyright (C) 2015 ownCloud Inc.
   6  *
   7  *   This program is free software: you can redistribute it and/or modify
   8  *   it under the terms of the GNU General Public License version 2,
   9  *   as published by the Free Software Foundation.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 package com.owncloud.android.media;
  22
  23
  24 import com.owncloud.android.datamodel.OCFile;
  25 import com.owncloud.android.lib.common.utils.Log_OC;
  26 import com.owncloud.android.media.MediaService.State;
  27
  28 import android.accounts.Account;
  29 import android.content.Intent;
  30 import android.media.MediaPlayer;
  31 import android.os.Binder;
  32 import android.widget.MediaController;
  33
  34
  35 /**
  36  *  Binder allowing client components to perform operations on on the MediaPlayer managed by a MediaService instance.
  37  *
  38  *  Provides the operations of {@link MediaController.MediaPlayerControl}, and an extra method to check if
  39  *  an {@link OCFile} instance is handled by the MediaService.
  40  */
  41 public class MediaServiceBinder extends Binder implements MediaController.MediaPlayerControl {
  42
  43     private static final String TAG = MediaServiceBinder.class.getSimpleName();
  44     /**
  45      * {@link MediaService} instance to access with the binder
  46      */
  47     private MediaService mService = null;
  48
  49     /**
  50      * Public constructor
  51      *
  52      * @param service       A {@link MediaService} instance to access with the binder
  53      */
  54     public MediaServiceBinder(MediaService service) {
  55         if (service == null) {
  56             throw new IllegalArgumentException("Argument 'service' can not be null");
  57         }
  58         mService = service;
  59     }
  60
  61
  62     public boolean isPlaying(OCFile mFile) {
  63         return (mFile != null && mFile.equals(mService.getCurrentFile()));
  64     }
  65
  66
  67     @Override
  68     public boolean canPause() {
  69         return true;
  70     }
  71
  72     @Override
  73     public boolean canSeekBackward() {
  74         return true;
  75     }
  76
  77     @Override
  78     public boolean canSeekForward() {
  79         return true;
  80     }
  81
  82     @Override
  83     public int getBufferPercentage() {
  84         MediaPlayer currentPlayer = mService.getPlayer();
  85         if (currentPlayer != null) {
  86             return 100;
  87             // TODO update for streamed playback; add OnBufferUpdateListener in MediaService
  88         } else {
  89             return 0;
  90         }
  91     }
  92
  93     @Override
  94     public int getCurrentPosition() {
  95         MediaPlayer currentPlayer = mService.getPlayer();
  96         if (currentPlayer != null) {
  97             int pos = currentPlayer.getCurrentPosition();
  98             return pos;
  99         } else {
 100             return 0;
 101         }
 102     }
 103
 104     @Override
 105     public int getDuration() {
 106         MediaPlayer currentPlayer = mService.getPlayer();
 107         if (currentPlayer != null) {
 108             int dur = currentPlayer.getDuration();
 109             return dur;
 110         } else {
 111             return 0;
 112         }
 113     }
 114
 115
 116     /**
 117      * Reports if the MediaService is playing a file or not.
 118      *
 119      * Considers that the file is being played when it is in preparation because the expected
 120      * client of this method is a {@link MediaController} , and we do not want that the 'play'
 121      * button is shown when the file is being prepared by the MediaService.
 122      */
 123     @Override
 124     public boolean isPlaying() {
 125         MediaService.State currentState = mService.getState();
 126         return (currentState == State.PLAYING || (currentState == State.PREPARING && mService.mPlayOnPrepared));
 127     }
 128
 129
 130     @Override
 131     public void pause() {
 132         Log_OC.d(TAG, "Pausing through binder...");
 133         mService.processPauseRequest();
 134     }
 135
 136     @Override
 137     public void seekTo(int pos) {
 138         Log_OC.d(TAG, "Seeking " + pos + " through binder...");
 139         MediaPlayer currentPlayer = mService.getPlayer();
 140         MediaService.State currentState = mService.getState();
 141         if (currentPlayer != null && currentState != State.PREPARING && currentState != State.STOPPED) {
 142             currentPlayer.seekTo(pos);
 143         }
 144     }
 145
 146     @Override
 147     public void start() {
 148         Log_OC.d(TAG, "Starting through binder...");
 149         mService.processPlayRequest();  // this will finish the service if there is no file preloaded to play
 150     }
 151
 152     public void start(Account account, OCFile file, boolean playImmediately, int position) {
 153         Log_OC.d(TAG, "Loading and starting through binder...");
 154         Intent i = new Intent(mService, MediaService.class);
 155         i.putExtra(MediaService.EXTRA_ACCOUNT, account);
 156         i.putExtra(MediaService.EXTRA_FILE, file);
 157         i.putExtra(MediaService.EXTRA_PLAY_ON_LOAD, playImmediately);
 158         i.putExtra(MediaService.EXTRA_START_POSITION, position);
 159         i.setAction(MediaService.ACTION_PLAY_FILE);
 160         mService.startService(i);
 161     }
 162
 163
 164     public void registerMediaController(MediaControlView mediaController) {
 165         mService.setMediaContoller(mediaController);
 166     }
 167
 168     public void unregisterMediaController(MediaControlView mediaController) {
 169         if (mediaController != null && mediaController == mService.getMediaController()) {
 170             mService.setMediaContoller(null);
 171         }
 172
 173     }
 174
 175     public boolean isInPlaybackState() {
 176         MediaService.State currentState = mService.getState();
 177         return (currentState == MediaService.State.PLAYING || currentState == MediaService.State.PAUSED);
 178     }
 179
 180
 181     @Override
 182     public int getAudioSessionId() {
 183         return 1; // not really used
 184     }
 185
 186 }
 187
 188