public void Extract(SequentialReader reader, HuffmanTablesDirectory directory)
{
try
{
while (reader.Available() > 0)
{
byte header = reader.GetByte();
HuffmanTableClass tableClass = HuffmanTable.TypeOf((header & 0xF0) >> 4);
int tableDestinationId = header & 0xF;
byte[] lBytes = GetBytes(reader, 16);
int vCount = 0;
foreach (byte b in lBytes)
{
vCount += (b & 0xFF);
}
byte[] vBytes = GetBytes(reader, vCount);
directory.AddTable(new HuffmanTable(tableClass, tableDestinationId, lBytes, vBytes));
}
}
catch (IOException me)
{
directory.AddError(me.ToString());
}
}
public HuffmanTable(HuffmanTableClass tableClass, int tableDestinationId, byte[] lengthBytes, byte[] valueBytes)
{
_lengthBytes = lengthBytes ?? throw new ArgumentNullException(nameof(lengthBytes));
_valueBytes = valueBytes ?? throw new ArgumentNullException(nameof(valueBytes));
TableClass = tableClass;
TableDestinationId = tableDestinationId;
TableLength = _valueBytes.Length + 17;
}