private void initWithStartingSong(Track t)
{
int trackIndex = unshuffledPlaylist.Songs.IndexOf(t);
unrepeatedPlaylistLength = unshuffledPlaylist.Count();
currentIndex = 0;
//create and initialize array with number of elements equal to items in the playlist
int[] shuffledPlaylistIndexes = new int[unrepeatedPlaylistLength];
shuffledPlaylistIndexes[0] = trackIndex;
for (int counter = 1; counter < unrepeatedPlaylistLength; counter++)
{
if (counter != trackIndex)
shuffledPlaylistIndexes[counter] = counter;
}
// To shuffle an array a of n elements (indices 0..n-1):
for (int i = unrepeatedPlaylistLength - 1; i >= 1; i--)
{
Random r = new Random();
int j = r.Next(1, i);
int num1 = shuffledPlaylistIndexes[j];
int num2 = shuffledPlaylistIndexes[i];
shuffledPlaylistIndexes[j] = num2;
shuffledPlaylistIndexes[i] = num1;
}
shuffledPlaylist = new Playlist();
for (int counter = 0; counter < shuffledPlaylistIndexes.Length; counter++)
shuffledPlaylist.AddSong(unshuffledPlaylist.ElementAt(shuffledPlaylistIndexes[counter]));
}
/// <summary>
/// Initialize a shuffler but with a specific starting track.
/// </summary>
/// <param name="playlist"></param>
/// <param name="startingTrack"></param>
public Shuffler(Playlist playlist, Track startingTrack)
{
unshuffledPlaylist = playlist;
initWithStartingSong(startingTrack);
}
public Track GetSongById(long id)
{
SQLiteConnection dbConnection = new SQLiteConnection(sqlConnectionString);
Track result = null;
string sql = "select * from track where id = " + id;
dbConnection.Open();
SQLiteCommand command = new SQLiteCommand(sql, dbConnection);
SQLiteDataReader reader = command.ExecuteReader();
while (reader.Read())
result = new Track((long)reader["id"], reader["title"].ToString(), reader["album_artist"].ToString(),
reader["composer"].ToString(), reader["album"].ToString(), reader["genre"].ToString(),
(short)((long)reader["track_number"]), (short)((long)reader["year"]),
(short)((long)reader["disc"]), reader["file_path"].ToString());
dbConnection.Close();
return result;
}
public void RemoveTrackFromShuffler(Track t)
{
shuffledPlaylist.RemoveSong(t);
}
private void setLabels(Track t)
{
lblTitleContent.Content = t.Title;
lblArtistContent.Content = t.Artist;
lblAlbumContent.Content = t.Album;
if (t.Year != 0)
lblYearContent.Content = + t.Year;
else
lblYearContent.Content = "";
lblGenreContent.Content = t.Genre;
//lblBitDepthContent.Content = musicEngine.BitDepth;
lblSampleRateContent.Content = musicEngine.SampleRate;
//album art
try
{
//string imageFile = selectedLibrary.GetAlbumArtPathByAlbumName(t.Album);
string imageFile = selectedLibrary.GetAlbumArtPathBySongID(t.Id);
if (imageFile != "")
{
albumImage.StretchDirection = StretchDirection.DownOnly;
albumImage.Source = new BitmapImage(new Uri(imageFile));
//ImageBrush background = new ImageBrush();
//background.ImageSource = new BitmapImage( new Uri(imageFile));
//playerMainGrid.Background = background;
}
else
{
albumImage.Source = null;
}
}
catch (Exception)
{
albumImage.Source = null;
Console.WriteLine("Trapped exception loading album art");
}
}
private void PlayTrack(Track t)
{
if (isPlaying)
musicEngine.Stop();
currentTrack = t;
//this.Dispatcher.BeginInvoke(new Action(() =>
// {
// musicEngine.Play(((Track)lstNowPlaying.SelectedItem).FilePath, selectedOutput);
// }));
try
{
musicEngine.Play(((Track)lstNowPlaying.SelectedItem).FilePath, selectedOutput);
}
catch (InvalidOutputDeviceException e)
{
string messageBoxText = "The selected output device: \n"
+ e.Output.DeviceName +
"\nis not working properly. Make\nsure the device is turned on.";
string caption = "Output Device Problem";
MessageBoxButton button = MessageBoxButton.OK;
MessageBoxImage icon = MessageBoxImage.Warning;
MessageBox.Show(messageBoxText, caption, button, icon);
return;
}
setLabels(t);
SetButtons(ButtonClicked.Play);
Properties.Settings.Default.CurrentTrack = currentTrack;
Properties.Settings.Default.Save();
}
public string RemoveTrackFromPlaylist(Track song)
{
currentPlaylist.RemoveSong(song);
lstNowPlaying.Items.Remove(song);
return GetCurrentPlaylistJSON();
}
public string AddTrackToPlaylist(Track song)
{
currentPlaylist.Add(song);
lstNowPlaying.Items.Add(song);
return GetCurrentPlaylistJSON();
}
public SongChangedEventArgs(Track song)
{
t = song;
}
