/// <summary>
/// decode the bits
/// </summary>
/// <param name="bits"></param>
/// <param name="hints"></param>
/// <returns></returns>
public DecoderResult decode(BitMatrix bits,
IDictionary <DecodeHintType, object> hints)
{
BitMatrixParser parser = new BitMatrixParser(bits);
byte[] codewords = parser.readCodewords();
if (!correctErrors(codewords, 0, 10, 10, ALL))
{
return(null);
}
int mode = codewords[0] & 0x0F;
byte[] datawords;
switch (mode)
{
case 2:
case 3:
case 4:
if (!correctErrors(codewords, 20, 84, 40, EVEN))
{
return(null);
}
if (!correctErrors(codewords, 20, 84, 40, ODD))
{
return(null);
}
datawords = new byte[94];
break;
case 5:
if (!correctErrors(codewords, 20, 68, 56, EVEN))
{
return(null);
}
if (!correctErrors(codewords, 20, 68, 56, ODD))
{
return(null);
}
datawords = new byte[78];
break;
default:
return(null);
}
Array.Copy(codewords, 0, datawords, 0, 10);
Array.Copy(codewords, 20, datawords, 10, datawords.Length - 10);
return(DecodedBitStreamParser.decode(datawords, mode));
}
/// <summary>
/// decode()
/// </summary>
/// <param name="bits"></param>
/// <param name="hints"></param>
/// <returns>DecoderResult</returns>
public DecoderResult decode(BitMatrix bits,
IDictionary<DecodeHintType, object> hints)
{
BitMatrixParser parser = new BitMatrixParser(bits);
byte[] codewords = parser.readCodewords();
if (!correctErrors(codewords, 0, 10, 10, ALL))
return null;
int mode = codewords[0] & 0x0F;
byte[] datawords;
switch (mode)
{
case 2:
case 3:
case 4:
if (!correctErrors(codewords, 20, 84, 40, EVEN))
return null;
if (!correctErrors(codewords, 20, 84, 40, ODD))
return null;
datawords = new byte[94];
break;
case 5:
if (!correctErrors(codewords, 20, 68, 56, EVEN))
return null;
if (!correctErrors(codewords, 20, 68, 56, ODD))
return null;
datawords = new byte[78];
break;
default:
return null;
}
Array.Copy(codewords, 0, datawords, 0, 10);
Array.Copy(codewords, 20, datawords, 10, datawords.Length - 10);
return DecodedBitStreamParser.decode(datawords, mode);
}