src/com/owncloud/android/ui/preview/PreviewVideoActivity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012-2013 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation, either version 2 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.ui.preview;
  20
  21 import android.accounts.Account;
  22 import android.app.Activity;
  23 import android.app.AlertDialog;
  24 import android.content.DialogInterface;
  25 import android.content.Intent;
  26 import android.media.MediaPlayer;
  27 import android.media.MediaPlayer.OnCompletionListener;
  28 import android.media.MediaPlayer.OnErrorListener;
  29 import android.media.MediaPlayer.OnPreparedListener;
  30 import android.net.Uri;
  31 import android.os.Bundle;
  32 import android.util.Log;
  33 import android.view.MotionEvent;
  34 import android.widget.MediaController;
  35 import android.widget.VideoView;
  36
  37 import com.owncloud.android.AccountUtils;
  38 import com.owncloud.android.R;
  39 import com.owncloud.android.datamodel.OCFile;
  40 import com.owncloud.android.media.MediaService;
  41
  42 /**
  43  *  Activity implementing a basic video player.
  44  *
  45  *  Used as an utility to preview video files contained in an ownCloud account.
  46  *
  47  *  Currently, it always plays in landscape mode, full screen. When the playback ends,
  48  *  the activity is finished.
  49  *
  50  *  @author David A. Velasco
  51  */
  52 public class PreviewVideoActivity extends Activity implements OnCompletionListener, OnPreparedListener, OnErrorListener {
  53
  54     /** Key to receive an {@link OCFile} to play as an extra value in an {@link Intent} */
  55     public static final String EXTRA_FILE = "FILE";
  56
  57     /** Key to receive the ownCloud {@link Account} where the file to play is saved as an extra value in an {@link Intent} */
  58     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  59
  60     /** Key to receive a flag signaling if the video should be started immediately */
  61     public static final String EXTRA_AUTOPLAY = "AUTOPLAY";
  62
  63     /** Key to receive the position of the playback where the video should be put at start */
  64     public static final String EXTRA_START_POSITION = "START_POSITION";
  65
  66     private static final String TAG = PreviewVideoActivity.class.getSimpleName();
  67
  68     private OCFile mFile;                       // video file to play
  69     private Account mAccount;                   // ownCloud account holding mFile
  70     private int mSavedPlaybackPosition;         // in the unit time handled by MediaPlayer.getCurrentPosition()
  71     private boolean mAutoplay;                  // when 'true', the playback starts immediately with the activity
  72     private VideoView mVideoPlayer;             // view to play the file; both performs and show the playback
  73     private MediaController mMediaController;   // panel control used by the user to control the playback
  74
  75     /**
  76      *  Called when the activity is first created.
  77      *
  78      *  Searches for an {@link OCFile} and ownCloud {@link Account} holding it in the starting {@link Intent}.
  79      *
  80      *  The {@link Account} is unnecessary if the file is downloaded; else, the {@link Account} is used to
  81      *  try to stream the remote file - TODO get the streaming works
  82      *
  83      *  {@inheritDoc}
  84      */
  85     @Override
  86     public void onCreate(Bundle savedInstanceState) {
  87         super.onCreate(savedInstanceState);
  88
  89         setContentView(R.layout.video_layout);
  90
  91         Bundle extras = getIntent().getExtras();
  92         mFile = extras.getParcelable(EXTRA_FILE);
  93         mAccount = extras.getParcelable(EXTRA_ACCOUNT);
  94         mSavedPlaybackPosition = extras.getInt(EXTRA_START_POSITION);
  95         mAutoplay = extras.getBoolean(EXTRA_AUTOPLAY);
  96
  97         mVideoPlayer = (VideoView) findViewById(R.id.videoPlayer);
  98
  99         // set listeners to get more contol on the playback
 100         mVideoPlayer.setOnPreparedListener(this);
 101         mVideoPlayer.setOnCompletionListener(this);
 102         mVideoPlayer.setOnErrorListener(this);
 103
 104         // keep the screen on while the playback is performed (prevents screen off by battery save)
 105         mVideoPlayer.setKeepScreenOn(true);
 106
 107         if (mFile != null) {
 108             if (mFile.isDown()) {
 109                 mVideoPlayer.setVideoPath(mFile.getStoragePath());
 110
 111             } else if (mAccount != null) {
 112                 // not working now
 113                 String url = AccountUtils.constructFullURLForAccount(this, mAccount) + mFile.getRemotePath();
 114                 mVideoPlayer.setVideoURI(Uri.parse(url));
 115
 116             } else {
 117                 onError(null, MediaService.OC_MEDIA_ERROR, R.string.media_err_no_account);
 118             }
 119
 120             // create and prepare control panel for the user
 121             mMediaController = new MediaController(this);
 122             mMediaController.setMediaPlayer(mVideoPlayer);
 123             mMediaController.setAnchorView(mVideoPlayer);
 124             mVideoPlayer.setMediaController(mMediaController);
 125
 126         } else {
 127             onError(null, MediaService.OC_MEDIA_ERROR, R.string.media_err_nothing_to_play);
 128         }
 129     }
 130
 131
 132     @Override
 133     public void onBackPressed() {
 134         Intent i = new Intent();
 135         i.putExtra(EXTRA_AUTOPLAY, mVideoPlayer.isPlaying());
 136         i.putExtra(EXTRA_START_POSITION, mVideoPlayer.getCurrentPosition());
 137         setResult(RESULT_OK, i);
 138         super.onBackPressed();
 139     }
 140
 141
 142     /**
 143      * Called when the file is ready to be played.
 144      *
 145      * Just starts the playback.
 146      *
 147      * @param   mp    {@link MediaPlayer} instance performing the playback.
 148      */
 149     @Override
 150     public void onPrepared(MediaPlayer vp) {
 151         mVideoPlayer.seekTo(mSavedPlaybackPosition);
 152         if (mAutoplay) {
 153             mVideoPlayer.start();
 154         }
 155         mMediaController.show(5000);
 156     }
 157
 158
 159     /**
 160      * Called when the file is finished playing.
 161      *
 162      * Rewinds the video
 163      *
 164      * @param   mp    {@link MediaPlayer} instance performing the playback.
 165      */
 166     @Override
 167     public void onCompletion(MediaPlayer  mp) {
 168         mVideoPlayer.seekTo(0);
 169     }
 170
 171
 172     /**
 173      * Called when an error in playback occurs.
 174      *
 175      * @param   mp      {@link MediaPlayer} instance performing the playback.
 176      * @param   what    Type of error
 177      * @param   extra   Extra code specific to the error
 178      */
 179     @Override
 180     public boolean onError(MediaPlayer mp, int what, int extra) {
 181         Log.e(TAG, "Error in video playback, what = " + what + ", extra = " + extra);
 182
 183         if (mMediaController != null) {
 184             mMediaController.hide();
 185         }
 186
 187         if (mVideoPlayer.getWindowToken() != null) {
 188             String message = MediaService.getMessageForMediaError(this, what, extra);
 189             new AlertDialog.Builder(this)
 190                     .setMessage(message)
 191                     .setPositiveButton(android.R.string.VideoView_error_button,
 192                             new DialogInterface.OnClickListener() {
 193                                 public void onClick(DialogInterface dialog, int whichButton) {
 194                                     PreviewVideoActivity.this.onCompletion(null);
 195                                 }
 196                             })
 197                     .setCancelable(false)
 198                     .show();
 199         }
 200         return true;
 201     }
 202
 203
 204     /**
 205      * Screen touches trigger the appearance of the control panel for a limited time.
 206      *
 207      * {@inheritDoc}
 208      */
 209     @Override
 210     public boolean onTouchEvent (MotionEvent ev){
 211         if (ev.getAction() == MotionEvent.ACTION_DOWN) {
 212             mMediaController.show(MediaService.MEDIA_CONTROL_SHORT_LIFE);
 213             return true;
 214         } else {
 215             return false;
 216         }
 217     }
 218
 219
 220 }