/// <summary>
/// Looks for a tag ending at a specified position and moves
/// the cursor to its start position.
/// </summary>
/// <param name="position">
/// A <see cref="long" /> value reference specifying at what
/// position the potential tag starts. If a tag is found,
/// this value will be updated to the position at which the
/// found tag ends.
/// </param>
/// <returns>
/// A <see cref="TagLib.TagTypes" /> value specifying the
/// type of tag found at the specified position, or <see
/// cref="TagTypes.None" /> if no tag was found.
/// </returns>
private TagTypes ReadTagInfo(ref long position)
{
file.Seek(position);
ByteVector data = file.ReadBlock(read_size);
try {
if (data.StartsWith(TagLib.Ape.Footer.FileIdentifier))
{
TagLib.Ape.Footer footer =
new TagLib.Ape.Footer(data);
position += footer.CompleteTagSize;
return(TagTypes.Ape);
}
if (data.StartsWith(TagLib.Id3v2.Header.FileIdentifier))
{
TagLib.Id3v2.Header header =
new TagLib.Id3v2.Header(data);
position += header.CompleteTagSize;
return(TagTypes.Id3v2);
}
} catch (CorruptFileException) {
}
return(TagTypes.None);
}
/// <summary>
/// Looks for a tag starting at a specified position and moves
/// the cursor to its start position.
/// </summary>
/// <param name="position">
/// A <see cref="long" /> value reference specifying at what
/// position the potential tag starts. If a tag is found,
/// this value will be updated to the position at which the
/// found tag ends.
/// </param>
/// <returns>
/// A <see cref="TagLib.TagTypes" /> value specifying the
/// type of tag found at the specified position, or <see
/// cref="TagTypes.None" /> if no tag was found.
/// </returns>
private TagTypes ReadTagInfo(ref long position)
{
file.Seek (position);
ByteVector data = file.ReadBlock (read_size);
try {
if (data.StartsWith (TagLib.Ape.Footer.FileIdentifier)) {
TagLib.Ape.Footer footer =
new TagLib.Ape.Footer (data);
position += footer.CompleteTagSize;
return TagTypes.Ape;
}
if (data.StartsWith (TagLib.Id3v2.Header.FileIdentifier)) {
TagLib.Id3v2.Header header =
new TagLib.Id3v2.Header (data);
position += header.CompleteTagSize;
return TagTypes.Id3v2;
}
} catch (CorruptFileException) {
}
return TagTypes.None;
}