public override IntField Decode(Stream input)
{
// Read size
int w = (int)input.ReadUInt32Optim();
int h = (int)input.ReadUInt32Optim();
// Read probabilities
ulong[] probs = CodecUtil.LoadFreqsCrappy(input, FieldcodeSymbols + 1);
// Read fields
ArithmeticSectionsCodec ac = new ArithmeticSectionsCodec(probs, 6);
ac.Decode(input);
var fields = new List <int[]>();
for (int i = 1; i <= 3; i++)
{
fields.Add(ac.ReadSection());
}
// Undo fieldcode
IntField transformed = CodecUtil.FieldcodeRunlengthsDe(fields, w, h, new RunLength01MaxSmartCodec(FieldcodeSymbols), this);
// Undo predictive transform
transformed.PredictionDeTransformXor(Seer);
transformed.ArgbFromField(0, 3);
return(transformed);
}
public override IntField Decode(Stream input)
{
// Read size
int w = (int)input.ReadUInt32Optim();
int h = (int)input.ReadUInt32Optim();
// Read probabilities
ulong[] probs = CodecUtil.LoadFreqs(input, TimwiCecCompressor.runLProbsProbs, RLE.MaxSymbol + 1);
// Read fields
int len = (int)input.ReadUInt32Optim();
ArithmeticCodingReader acr = new ArithmeticCodingReader(input, probs);
int[] fields = new int[len];
for (int p = 0; p < len; p++)
{
fields[p] = acr.ReadSymbol();
}
// Undo fieldcode
IntField transformed = CodecUtil.FieldcodeRunlengthsDe2(fields, w, h, RLE, this);
// Undo predictive transform
transformed.PredictionDeTransformXor(Seer);
transformed.ArgbFromField(0, 3);
return(transformed);
}