private void Decompress(BitFile sourceFile, BitFile targetFile)
{
long originalSize = DecodeHeader(sourceFile);
var predictor = new Predictor();
var decoder = new ArithmeticDecoder(sourceFile);
while (targetFile.Length < originalSize)
{
double p0 = predictor.Predict();
var bit = decoder.Decode(p0);
targetFile.Write(bit);
predictor.Update((int)bit);
}
}
private void Compress(BitFile sourceFile, BitFile targetFile)
{
EncodeHeader(targetFile, sourceFile.Length);
var predictor = new Predictor();
var encoder = new ArithmeticEncoder(targetFile);
while (!sourceFile.IsEof)
{
var bit = sourceFile.Read();
double p0 = predictor.Predict();
// todo: remove casting
encoder.Encode((int)bit, p0);
predictor.Update((int)bit);
}
encoder.EncodeRemainingBits();
}