/// <summary>
/// Reads the audio properties from the file represented by
/// the current instance.
/// </summary>
/// <param name="start">
/// A <see cref="long" /> value containing the seek position
/// at which the tags end and the media data begins.
/// </param>
/// <param name="end">
/// A <see cref="long" /> value containing the seek position
/// at which the media data ends and the tags begin.
/// </param>
/// <param name="propertiesStyle">
/// A <see cref="ReadStyle" /> value specifying at what level
/// of accuracy to read the media properties, or <see
/// cref="ReadStyle.None" /> to ignore the properties.
/// </param>
/// <returns>
/// A <see cref="TagLib.Properties" /> object describing the
/// media properties of the file represented by the current
/// instance.
/// </returns>
protected override Properties ReadProperties(long start,
long end,
ReadStyle propertiesStyle)
{
first_header.SetStreamLength(end - start);
return(new Properties(TimeSpan.Zero, first_header));
}
