private IDataReader Sanitize(long startOffset, int length, ICollection <uint> sanitizedPositions)
{
var window = new byte[length];
_dataReader.Read(window, 0, length);
//find 00 00 03 then discard the third byte (03)
int dstPos = SanitizeWindow(window, sanitizedPositions);
// Remove trailing zeros bytes
// FIXME: this fragment contains a prevention for emtpy (zero byte) packets!!
while ((dstPos > 1) && (window[dstPos - 1] == 0))
{
dstPos--;
}
return(new ByteArrayDataReader(window, _dataReader.GetDataPacket(startOffset, dstPos)));
}
public void GetStuffingBytes(int numBytes)
{
// Read stuffing bytes
var b = new byte[numBytes];
int bytesRead = _dataReader.Read(b, 0, b.Length);
_dataReader.Position += bytesRead;
// In case fewer bytes were read, truncate the data
if (bytesRead != b.Length)
{
var subArray = new byte[bytesRead];
Array.Copy(b, subArray, bytesRead);
b = subArray;
}
// Add and verify stuffing bytes attribute
Result.AddAttribute(Mpeg2SystemHeaderParser.Attribute.StuffingBytes, b, _stuffingBytesResultFormatter);
}
