/// <summary>
/// Internal method used to fire the TrackAdded event.
/// </summary>
/// <param name="row">Row that's just been added</param>
private void NotifyEventSubscribers(MediaData.TrackRow row)
{
// notify any event subscribers
if (TrackAdded != null)
{
TrackAdded(this, new TrackInfoEventArgs(
(row.IsTitleNull() ? "" : row.Title),
(row.IsAuthorNull() ? "" : row.Author)));
}
}
/// <summary>
/// Retrieves media information for a single directory as a DataSet.
/// </summary>
/// <param name="directory">Directory to be used for data retrieval</param>
/// <returns>MediaData object (a strongly-typed DataSet)</returns>
public MediaData RetrieveSingleDirectoryInfo(string directory)
{
MediaData md = new MediaData();
DirectoryInfo dirInfo = new DirectoryInfo(directory);
FileInfo[] fileInfos = dirInfo.GetFiles("*.wma");
for (int i = 0; i < fileInfos.Length; i++)
{
MediaData.TrackRow row = md.Track.NewTrackRow();
RetrieveTrackRow(dirInfo + "\\" + fileInfos[i].Name, ref row);
md.Track.AddTrackRow(row);
NotifyEventSubscribers(row);
}
return(md);
}
/// <summary>
/// Recursive function used by RetrieveRecursiveDirectoryInfo to drill down
/// the directory tree.
/// </summary>
/// <param name="directory">Current directory level</param>
/// <param name="md">MediaData structure in current form</param>
private void RecurseDirectories(string directory, MediaData md)
{
DirectoryInfo parent = new DirectoryInfo(directory);
DirectoryInfo[] children = parent.GetDirectories();
foreach (DirectoryInfo folder in children)
{
FileInfo[] fileInfos = folder.GetFiles("*.wma");
for (int i = 0; i < fileInfos.Length; i++)
{
MediaData.TrackRow row = md.Track.NewTrackRow();
RetrieveTrackRow(folder.FullName + "\\" + fileInfos[i].Name, ref row);
md.Track.AddTrackRow(row);
NotifyEventSubscribers(row);
}
RecurseDirectories(folder.FullName, md);
}
}
/// <summary>
/// Used internally to fill a row of a DataSet with metadata for the given media file.
/// </summary>
/// <param name="filename">Windows Media File (.wma file)</param></param>
/// <param name="row">The TrackRow to be filled with data</param>
private void RetrieveTrackRow(string filename, ref MediaData.TrackRow row)
{
MediaData.TrackDataTable tab = new MediaData.TrackDataTable();
using (MetadataEditor md = new MetadataEditor(filename))
{
row.Title = md[MediaMetadata.Title] as string;
row.Author = md[MediaMetadata.Author] as string;
row.AlbumTitle = md[MediaMetadata.AlbumTitle] as string;
row.AlbumArtist = md[MediaMetadata.AlbumArtist] as string;
row.Publisher = md[MediaMetadata.Publisher] as string;
row.Genre = md[MediaMetadata.Genre] as string;
object o = md[MediaMetadata.TrackNumber];
if (o == null)
{
row.SetTrackNumberNull();
}
else
{
row.TrackNumber = (uint)o;
}
o = md[MediaMetadata.Duration];
if (o == null)
{
row.SetDurationNull();
}
else
{
row.Duration = new TimeSpan((long)(ulong)o);
}
o = md[MediaMetadata.BitRate];
if (o == null)
{
row.SetBitRateNull();
}
else
{
row.BitRate = (uint)o;
}
o = md[MediaMetadata.IsProtected];
if (o == null)
{
row.SetIsProtectedNull();
}
else
{
row.IsProtected = (bool)o;
}
o = md[MediaMetadata.FileSize];
if (o == null)
{
row.SetFileSizeNull();
}
else
{
row.FileSize = (ulong)o;
}
row.FileName = filename;
}
}
