/// <summary>
/// Read MP4 audio meta data.
/// </summary>
/// <param name="strm">MP4 input data stream</param>
/// <param name="createImageObject">Read embedded Cover Art(=true) or not(=false)</param>
/// <returns>List of meta data or null</returns>
public static List <KeyValuePair <string, object> > Read(Stream strm, bool createImageObject = true)
{
var parser = new MP4(strm, createImageObject);
try
{
parser.ReadRecurse(strm.Length);
}
catch (ArgumentException) { }
catch (IOException) { }
catch (FormatException) { }
return(parser.tags);
}
public static List <KeyValuePair <string, object> > readTagByFilename(string filename, bool createImageObject)
{
List <KeyValuePair <string, object> > tag = null;
try
{
using (System.IO.FileStream fs = System.IO.File.Open(filename, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read))
{
switch (System.IO.Path.GetExtension(filename).ToLower())
{
case ".flac":
tag = FlacTag.Read(fs, createImageObject);
break;
case ".ogg":
tag = Ogg.Read(fs);
break;
case ".m4a":
case ".m4v":
case ".mp4":
case ".aac":
tag = MP4.Read(fs, createImageObject);
break;
case ".wma":
case ".asf":
case ".wmv":
tag = ASF.Read(fs, createImageObject);
break;
case ".ape":
case ".tak":
case ".wv":
tag = ApeTag.Read(fs, createImageObject);
break;
case ".tta":
case ".mp3":
case ".mp2":
try
{
tag = ApeTag.Read(fs, createImageObject);
if (tag == null)
{
tag = new List <KeyValuePair <string, object> >();
}
}
catch (IOException) { }
try
{
fs.Seek(0, System.IO.SeekOrigin.Begin);
var tag_id3v2 = ID3ToTag(ID3V2Tag.readID3tag(fs, createImageObject));
if (tag_id3v2 != null)
{
tag.AddRange(tag_id3v2);
}
}
catch (IOException ex) { Logger.Error(ex); }
try
{
fs.Seek(0, System.IO.SeekOrigin.Begin);
var tag_id3v1 = ID3.Read(fs);
if (tag_id3v1 != null)
{
foreach (var v1tag in tag_id3v1)
{
if (tag.Find((e) => e.Key == v1tag.Key).Key == null)
{
tag.Add(v1tag);
}
}
}
}
catch (IOException) { }
break;
default:
return(null);
}
}
}
catch (IOException) { }
if (tag == null)
{
return(null);
}
// BANDをALBUM ARTISTとして扱う
var band = tag.Find((e) => { return(e.Key == "BAND"); });
if (band.Value != null)
{
tag.Add(new KeyValuePair <string, object>("ALBUM ARTIST", band.Value));
}
// TRACKNUMBERをTRACKとして扱う
var tracknumber = tag.Find((e) => { return(e.Key == "TRACKNUMBER"); });
if (tracknumber.Value != null)
{
tag.Add(new KeyValuePair <string, object>("TRACK", tracknumber.Value));
}
// ARTISTがないとき、ALBUM ARTISTをARTISTとして扱う
if (tag.Find((e) => { return(e.Key == "ARTIST"); }).Value == null)
{
var albumartist = tag.Find((e) => { return(e.Key == "ALBUM ARTIST"); });
if (albumartist.Value != null)
{
tag.Add(new KeyValuePair <string, object>("ARTIST", albumartist.Value));
}
}
return(tag);
}
