// Read a media-file's metadata2 (tags) into a simple SongInfo2 struct that
// uses little memory... use a static method to initialize it.
//---------------------------------------------------------------------------
public SongInfo2 Read2(string file)
{
string ext = Path.GetExtension(file).ToLower();
SongInfo2 si = new SongInfo2();
si.FilePath = file;
if (ext == ".wma" || ext == ".asf" || ext == ".wmv" || ext == ".wm")
{
try
{
si.FileType = SongInfo2.FT_WMA; // wma tag info
MediaDataManager mdm = new MediaDataManager();
if (mdm == null)
{
si.bException = true; // Error
return si;
}
TrackInfo ti;
try { ti = mdm.RetrieveTrackInfo(file); }
catch
{
si.bException = true;
return si;
}
si.Duration = ti.Duration; if (si.Duration.TotalSeconds > 0) si.bDurationTag = true;
if (ti.Title != null) { si.Title = ti.Title.Trim(); if (!string.IsNullOrEmpty(si.Title)) si.bTitleTag = true; }
if (ti.AlbumArtist != null) { si.Artist = ti.AlbumArtist.Trim(); if (!string.IsNullOrEmpty(si.Artist)) si.bArtistTag = true; }
// ti.Author: The Author attribute is the name of a media artist or actor associated with the content.
// This attribute may have multiple values. To retrieve all of the values for a multi-valued attribute, you must use
// the Media.getItemInfoByType method, not the Media.getItemInfo (WinMediaLib project) method.
// Same as FirstPerformer in a mp3 file
if (ti.Author != null) { si.Performer = ti.Author.Trim(); if (!string.IsNullOrEmpty(si.Performer)) si.bPerformerTag = true; }
if (ti.AlbumTitle != null) { si.Album = ti.AlbumTitle.Trim(); if (!string.IsNullOrEmpty(si.Album)) si.bAlbumTag = true; }
}
catch { si.bException = true; } // Threw an exception
}
else using (TagLib.File tagFile = TagLib.File.Create(file)) // Use taglib-sharp...
{
try
{
si.FileType = SongInfo2.FT_MP3; // mp3 tag info
if (tagFile == null)
{
si.bException = true; // Error
return si;
}
si.Duration = tagFile.Properties.Duration; if (si.Duration.TotalSeconds > 0) si.bDurationTag = true;
// Try to read the v2 tag-frame...
TagLib.Id3v2.Tag tagv2 = (TagLib.Id3v2.Tag)tagFile.GetTag(TagLib.TagTypes.Id3v2);
if (tagv2 != null)
{
if (tagv2.Title != null) { si.Title = tagv2.Title.Trim(); if (!string.IsNullOrEmpty(si.Title)) si.bTitleTag = true; }
if (tagv2.FirstAlbumArtist != null) { si.Artist = tagv2.FirstAlbumArtist.Trim(); if (!string.IsNullOrEmpty(si.Artist)) si.bArtistTag = true; }
if (tagv2.FirstPerformer != null) { si.Performer = tagv2.FirstPerformer.Trim(); if (!string.IsNullOrEmpty(si.Performer)) si.bPerformerTag = true; } // Same as Author in a wma file
if (tagv2.Album != null) { si.Album = tagv2.Album.Trim(); if (!string.IsNullOrEmpty(si.Album)) si.bAlbumTag = true; }
}
else // Try to read the old v1 tag
{
// Try to read the v1 tag-frame...
TagLib.Id3v1.Tag tagv1 = (TagLib.Id3v1.Tag)tagFile.GetTag(TagLib.TagTypes.Id3v1);
if (tagv1.Title != null) { si.Title = tagv1.Title.Trim(); if (!string.IsNullOrEmpty(si.Title)) si.bTitleTag = true; }
if (tagv1.FirstAlbumArtist != null) { si.Artist = tagv1.FirstAlbumArtist.Trim(); if (!string.IsNullOrEmpty(si.Artist)) si.bArtistTag = true; }
if (tagv1.FirstPerformer != null) { si.Performer = tagv1.FirstPerformer.Trim(); if (!string.IsNullOrEmpty(si.Performer)) si.bPerformerTag = true; } // Same as Author in a wma file
if (tagv1.Album != null) { si.Album = tagv1.Album.Trim(); if (!string.IsNullOrEmpty(si.Album)) si.bAlbumTag = true; }
}
}
catch { si.bException = true; } // Threw an exception
}
return si;
}
// Write a media-file's metadata (tags) from a SongInfo2 struct...
// Returns true if success.
//---------------------------------------------------------------------------
public bool Write2(SongInfo2 si, string file)
{
bool bRet = false; // Presume error
// ext == ".wma" || ext == ".asf" || ext == ".wmv" || ext == ".wm"
if (FilterInList(Path.GetExtension(file).ToLower()))
{
try
{
using (MediaDataManager Editor = new MediaDataManager()) // WMA Editor...
{
// See the end of this file for a list of windows media attributes...
if (si.bAlbumTag) Editor.SetAttrib(file, 0, "WM/AlbumTitle", WmTypes.WM_TYPE_STRING, si.Album);
if (si.bTitleTag) Editor.SetAttrib(file, 0, "Title", WmTypes.WM_TYPE_STRING, si.Title);
if (si.bArtistTag) Editor.SetAttrib(file, 0, "WM/AlbumArtist", WmTypes.WM_TYPE_STRING, si.Artist);
if (si.bPerformerTag) Editor.SetAttrib(file, 0, "Author", WmTypes.WM_TYPE_STRING, si.Performer);
bRet = true;
} // end using
}
catch { }
}
else try
{
using (TagLib.File f = TagLib.File.Create(file)) // Use taglib-sharp...
{
// Get the tag-frame and create it if necessary...
TagLib.Id3v2.Tag tag = (TagLib.Id3v2.Tag)f.GetTag(TagLib.TagTypes.Id3v2, true);
if (tag == null) return false;
if (si.bAlbumTag)
tag.Album = si.Album;
if (si.bTitleTag)
tag.Title = si.Title;
if (si.bArtistTag)
{
// Get list of artists, if any, and re-write
string[] Artists = tag.AlbumArtists;
if (Artists.Length == 0)
tag.AlbumArtists = new string[] { si.Artist };
else
{
Artists[0] = si.Artist;
tag.AlbumArtists = Artists;
}
}
if (si.bPerformerTag)
{
// Get list of performers, if any, and re-write
string[] Performers = tag.Performers;
if (Performers.Length == 0)
tag.Performers = new string[] { si.Performer };
else
{
Performers[0] = si.Performer;
tag.Performers = Performers;
}
}
tag.CopyTo(f.Tag, true); // Overwrite the song file's tag...
f.Save(); // Save tag
bRet = true;
} // end using
}
catch { }
return bRet;
}
//---------------------------------------------------------------------------
public SongInfo2 ParsePath(string path)
{
SongInfo2 si = new SongInfo2();
try
{
si.Title = Path.GetFileNameWithoutExtension(path); // Title
int comparelen = 3; // expected tokins: artist, album, song
// If MediaTags g_root property was set, parse it out of the song-path
if (!string.IsNullOrEmpty(g_root) && path.StartsWith(g_root)) path = path.Substring(g_root.Length, path.Length - g_root.Length);
if (Path.IsPathRooted(path)) comparelen++; // Adjust # expected tokins up if drive-letter present...
// Split into 0=drive, 1=artist, 2=album, 3=song
// Split into 0=artist, 1=album, 2=song (if not rooted)
string[] paths = path.Split(Path.DirectorySeparatorChar);
int len = paths.Length;
if (len >= comparelen)
{
si.Artist = paths[len - 3]; // Artist
si.Album = paths[len - 2]; // Album
}
else if (len >= comparelen - 1) si.Album = paths[len - 2]; // Album
}
catch { si.bException = true; } // Threw an exception
return si;
}
