/// <summary> <p>Decodes a QR Code represented as a {@link BitMatrix}. A 1 or "true" is taken to mean a black module.</p>
///
/// </summary>
/// <param name="bits">booleans representing white/black QR Code modules
/// </param>
/// <returns> text and bytes encoded within the QR Code
/// </returns>
/// <throws> ReaderException if the QR Code cannot be decoded </throws>
public DecoderResult Decode(BitMatrix bits)
{
// Construct a parser and read version, error-correction level
BitMatrixParser parser = new BitMatrixParser(bits);
Version version = parser.ReadVersion();
ErrorCorrectionLevel ecLevel = parser.ReadFormatInformation().ErrorCorrectionLevel;
// Read codewords
sbyte[] codewords = parser.ReadCodewords();
// Separate into data blocks
DataBlock[] dataBlocks = DataBlock.GetDataBlocks(codewords, version, ecLevel);
// Count total number of data bytes
int totalBytes = 0;
foreach (DataBlock t in dataBlocks)
{
totalBytes += t.NumDataCodewords;
}
sbyte[] resultBytes = new sbyte[totalBytes];
int resultOffset = 0;
// Error-correct and copy data blocks together into a stream of bytes
foreach (DataBlock dataBlock in dataBlocks)
{
sbyte[] codewordBytes = dataBlock.Codewords;
int numDataCodewords = dataBlock.NumDataCodewords;
CorrectErrors(codewordBytes, numDataCodewords);
for (int i = 0; i < numDataCodewords; i++)
{
resultBytes[resultOffset++] = codewordBytes[i];
}
}
// Decode the contents of that stream of bytes
return(DecodedBitStreamParser.Decode(resultBytes, version, ecLevel));
}
