public static SonyTag?DecodeSonyTag(byte[] tag)
{
if (tag == null || tag.Length != 12)
{
return(null);
}
SonyTag snTag = new SonyTag();
BigEndianBitConverter.IsLittleEndian = BitConverter.IsLittleEndian;
snTag.Version = BigEndianBitConverter.ToUInt16(tag, 0);
snTag.Kind = (byte)((tag[2] & 0xC0) >> 6);
snTag.Reserved = (byte)(tag[2] & 0x3F);
snTag.Volume = tag[3];
snTag.FileId = BigEndianBitConverter.ToInt16(tag, 4);
snTag.RelPage = BigEndianBitConverter.ToUInt16(tag, 6);
snTag.NextBlock = (ushort)(BigEndianBitConverter.ToUInt16(tag, 8) & 0x7FF);
snTag.PrevBlock = (ushort)(BigEndianBitConverter.ToUInt16(tag, 10) & 0x7FF);
snTag.IsLast = snTag.NextBlock == 0x7FF;
snTag.IsFirst = snTag.PrevBlock == 0x7FF;
return(snTag);
}
/// <summary>Decodes tag from a 3.5" Sony micro-floppy</summary>
/// <param name="tag">Byte array containing raw tag data</param>
/// <returns>Decoded tag in Sony's format</returns>
public static SonyTag?DecodeSonyTag(byte[] tag)
{
if (tag == null ||
tag.Length != 12)
{
return(null);
}
var snTag = new SonyTag
{
Version = BigEndianBitConverter.ToUInt16(tag, 0),
Kind = (byte)((tag[2] & 0xC0) >> 6),
Reserved = (byte)(tag[2] & 0x3F),
Volume = tag[3],
FileId = BigEndianBitConverter.ToInt16(tag, 4),
RelPage = BigEndianBitConverter.ToUInt16(tag, 6),
NextBlock = (ushort)(BigEndianBitConverter.ToUInt16(tag, 8) & 0x7FF),
PrevBlock = (ushort)(BigEndianBitConverter.ToUInt16(tag, 10) & 0x7FF)
};
snTag.IsLast = snTag.NextBlock == 0x7FF;
snTag.IsFirst = snTag.PrevBlock == 0x7FF;
return(snTag);
}
