Android Open Source - MusicPlayer-OLD Playlist Song

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2012-2013 Andrea De Cesare//from ww  w. j  a va  2 s  .c  o  m
 *
 * 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.andreadec.musicplayer;

import java.util.*;

import android.annotation.SuppressLint;
import android.graphics.Bitmap;
import android.media.MediaMetadataRetriever;
import android.os.Build;

/* Class representing a song in a playlist */
public class PlaylistSong implements PlayableItem {
  private String uri;
  private long id;
  private Playlist playlist;
  private String artist;
  private String title;
  private boolean hasImage;
  
  public PlaylistSong(String uri, String artist, String title, long id, boolean hasImage, Playlist playlist) {
    this.uri = uri;
    this.id = id;
    this.playlist = playlist;
    this.title = title;
    this.artist = artist;
    this.hasImage = hasImage;
  }
  
  public long getId() {
    return id;
  }
  
  public Playlist getPlaylist() {
    return playlist;
  }
  
  @Override
  public boolean equals(Object o) {
    if(!(o instanceof PlaylistSong)) return false;
    PlaylistSong s2 = (PlaylistSong)o;
    return id==s2.id;
  }

  @Override
  public String getTitle() {
    return title;
  }

  @Override
  public String getArtist() {
    return artist;
  }

  @Override
  public String getPlayableUri() {
    return uri;
  }
  
  @Override
  public boolean hasImage() {
    return hasImage;
  }
  
  @Override
  public Bitmap getImage() {
    return Utils.getMusicFileImage(uri);
  }

  @Override
  public PlayableItem getNext(boolean repeatAll) {
    ArrayList<PlaylistSong> songs = playlist.getSongs();
    int index = songs.indexOf(this);
    if(index<songs.size()-1) {
      return songs.get(index+1);
    } else {
      if(repeatAll) return songs.get(0);
    }
    return null;
  }

  @Override
  public PlayableItem getPrevious() {
    ArrayList<PlaylistSong> songs = playlist.getSongs();
    int index = songs.indexOf(this);
    if(index>0) {
      return songs.get(index-1);
    } else {
      return null;
    }
  }

  @Override
  public PlayableItem getRandom(Random random) {
    ArrayList<PlaylistSong> songs = playlist.getSongs();
    return songs.get(random.nextInt(songs.size()));
  }

  @Override
  public boolean isLengthAvailable() {
    return true;
  }
  
  @SuppressLint("InlinedApi")
  @Override
  public ArrayList<Information> getInformation() {
    String bitrate=null, album=null, year=null;
    
    // Get additional information from file
    MediaMetadataRetriever mmr = new MediaMetadataRetriever();
    try {
      mmr.setDataSource(uri);
      if(Build.VERSION.SDK_INT>=14) bitrate = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_BITRATE);
      album = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_ALBUM);
      year = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_YEAR);
    } catch(Exception e) {
    } finally {
      mmr.release();
    }
    
    ArrayList<Information> info = new ArrayList<Information>();
    info.add(new Information(R.string.artist, artist));
    info.add(new Information(R.string.title, title));
    if(year!=null) info.add(new Information(R.string.year, year));
    if(album!=null) info.add(new Information(R.string.album, album));
    info.add(new Information(R.string.playlist, playlist.getName()));
    info.add(new Information(R.string.fileName, uri));
    info.add(new Information(R.string.fileSize, Utils.getFileSize(uri)));
    if(bitrate!=null) {
      try {
        int kbps = Integer.parseInt(bitrate)/1000;
        info.add(new Information(R.string.bitrate, kbps+" kbps"));
      } catch(Exception e) {}
    }
    
    return info;
  }
}

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