private void SaveByArithmeticMethod()
{
const uint numSymbols = ((maxValuePixel * 2) + 1), eof = numSymbols - 1;
ArithmeticCodingLogic arithmCoder = new ArithmeticCodingLogic(bitWriterContext: _bitwriter, total_symbols: numSymbols, eof: eof);
for (int i = 0; i < _imgLength; i++)
{
for (int j = 0; j < _imgLength; j++)
{
uint symbol = (uint)(_imgPred._errorPredQ[i, j] + (maxValuePixel));
arithmCoder.EncodeImageErrorValue(symbol);
}
}
arithmCoder.SendLastDetailsOfImageError();
_bitwriter.Dispose();
}
private List <int> readArithmeticCompressedFile()
{
const uint numSymbols = (_imgLength * 2), eof = numSymbols - 1;
List <int> values = new List <int>();
ArithmeticCodingLogic arithmCoder = new ArithmeticCodingLogic(bitReaderContext: _bitReader, total_symbols: numSymbols, eof: eof);
arithmCoder._decodingValue = _bitReader.ReadNBits(32);
for (; ;)
{
uint symbol = arithmCoder.DecodeSymbol();
if (symbol == eof) // eof
{
arithmCoder._bitReader.Dispose();
break;
}
int symbolToErrorRange = (int)symbol - (_imgLength - 1);
values.Add(symbolToErrorRange);
arithmCoder.UpdateModel(symbol);
}
return(values);
}
