/**
* Writes the changed fields to the ID3v2 tag using TagLib
* Only works on local audio files.
* */
public void commitToTag()
{
if (this.uri.Scheme != Uri.UriSchemeFile) return;
Media akt_media = Playlist.Instance[Playlist.Instance.Cursor];
float last_position = 0;
bool wasPlayling = Player.Instance.isPlaying;
if (akt_media != null && akt_media.uri == this.uri && Player.Instance.isPlaying)
{
last_position = Player.Instance.Position;
Player.Instance.stop();
}
try
{
LibraryTagLib tl = new LibraryTagLib(this.uri);
tl.Tracknr = this.TrackNr;
tl.Title = this.Title;
tl.Album = this.Album;
tl.Artist = this.Artist;
tl.Year = this.Year;
tl.Genre = this.Genre;
tl.Comment = this.Comment;
tl.Composer = this.Composer;
tl.Copyright = this.Copyright;
tl.Rating = this.Rating;
tl.save();
}
catch (IOException ex)
{
throw ex;
}
if (akt_media != null && akt_media.uri == this.uri && wasPlayling)
{
Player.Instance.open(ref akt_media);
Player.Instance.play();
Player.Instance.Position = last_position;
}
}
/**
* Main function which gets passed a media object and tries to complete the missing information about this object. It calls TagLib to read ID3v2 tags, fiHash
* to calculate the SHA1-hashvalue, etc.
*
* \param media The media object which should get completed.
* \return The media object with hopefully more information that before.
* */
public Media getInfo(Media media)
{
if (media.uri.Scheme == Uri.UriSchemeFile)
{
System.IO.FileInfo fi = new System.IO.FileInfo(media.uri.LocalPath);
if (media.MTime != fi.LastWriteTime)
{
System.Diagnostics.Debug.Print("MTime modified, re-reading FileInfo: " + media.uri);
/* Filehash */
try
{
if (media.Type != Media.MediaType.Video)
{
fiHash hash = new fiHash(media.uri);
media.SHA1Sum = hash.SHA256;
}
if (media.uri.LocalPath.ToLower().EndsWith(".cda"))
{
media.Album = "Unknown Audio CD";
media.Artist = "Unknown";
media.Title = media.uri.LocalPath.ToString();
/* fixme, get length of audio track here */
//media.Length = ;
string trackname = Path.GetFileNameWithoutExtension(media.uri.LocalPath);
string alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.";
string tracknr = trackname.Trim(alphabet.ToCharArray());
try
{
media.TrackNr = Convert.ToUInt32(tracknr);
}
catch (InvalidCastException)
{
media.TrackNr = 1;
}
}
else if (media.Type == Media.MediaType.Audio)
{
/* Taglib */
LibraryTagLib tl = new LibraryTagLib(media.uri);
media.TrackNr = tl.Tracknr;
media.Title = tl.Title;
media.Album = tl.Album;
media.Artist = tl.Artist;
media.Year = tl.Year;
media.Genre = tl.Genre;
media.Comment = tl.Comment;
media.Composer = tl.Composer;
media.Copyright = tl.Copyright;
media.Length = tl.Length;
media.Rating = tl.Rating;
if (media.Album == "" && media.Title == "" && media.Artist == "")
{
string media_file = media.uri.LocalPath;
media.Title = media_file.Substring(media_file.LastIndexOf("\\") + 1);
}
}
else if (media.Type == Media.MediaType.Picture)
{
string media_file = media.uri.LocalPath;
media.Title = media_file.Substring(media_file.LastIndexOf("\\") + 1);
media.Artist = "(Image)";
media.Length = 10000;
}
else if (media.Type == Media.MediaType.Video)
{
string media_file = media.uri.LocalPath;
media.Title = media_file.Substring(media_file.LastIndexOf("\\") + 1);
media.Artist = "(Video)";
}
else
{
media.Title = "(Unknown)";
media.Artist = "(Unknown)";
media.Album = "(Unknown)";
}
/* LastWriteTime */
media.MTime = fi.LastWriteTime;
}
catch (IOException ex)
{
throw ex;
}
}
else
{
System.Diagnostics.Debug.Print("MTime not modified, skipping FileInfo: " + media.uri);
}
}
return media;
}
