/*public void Decode(bool[] values)
* {
* BinaryStats bs = new BinaryStats();
* coder.initDecoding();
* for (int i = 0; i < values.Length; i++)
* {
* values[i] = coder.decodeBit(bs.P0, bs.P1);
* bs.Update(values[i]);
* }
* }*/
public int[] Decode()
{
BinaryReader br = new BinaryReader(this.target);
int cnt = br.ReadInt32();
int encodedLength = br.ReadInt32();
long origPos = target.Position;
int[] result = new int[cnt];
Coder coder = new Coder(this.target);
coder.initDecoding();
IBinaryStats[] stats = new IBinaryStats[contextCount];
for (int i = 0; i < stats.Length; i++)
{
stats[i] = new ContextBinaryStats(contextDepth);
}
IBinaryStats rest = new ContextBinaryStats(contextDepth);
IBinaryStats sgn = new ContextBinaryStats(contextDepth);
for (int i = 0; i < cnt; i++)
{
List <bool> code = new List <bool>();
int bin = 0;
while (!isCode(code, binarizerCutoff, binarizerOrder))
{
IBinaryStats bs = bin < stats.Length ? stats[bin] : rest;
if (isSgn(code, binarizerCutoff, binarizerOrder))
{
bs = sgn;
}
bool bit = coder.decodeBit(bs.P0, bs.P1);
bs.Update(bit);
code.Add(bit);
bin++;
}
result[i] = deBinarize(code.ToArray(), binarizerCutoff, binarizerOrder);
}
target.Position = origPos + encodedLength;
return(result);
}
public void Encode(int[] values)
{
MemoryStream ms = new MemoryStream();
Coder coder = new Coder(ms);
bool[][] bins = binarize(values, binarizerCutoff, binarizerOrder);
IBinaryStats[] stats = new IBinaryStats[contextCount];
for (int i = 0; i < stats.Length; i++)
{
stats[i] = new ContextBinaryStats(contextDepth);
}
IBinaryStats rest = new ContextBinaryStats(contextDepth);
IBinaryStats sgn = new ContextBinaryStats(contextDepth);
for (int i = 0; i < bins.Length; i++)
{
for (int j = 0; j < bins[i].Length; j++)
{
IBinaryStats bs = j < stats.Length ? stats[j] : rest;
if ((j > 0) && (j == bins[i].Length - 1))
{
bs = sgn;
}
coder.encodeBit(bs.P0, bs.P1, bins[i][j]);
bs.Update(bins[i][j]);
}
}
coder.finishEncode();
int encodedLength = (int)ms.Length;
BinaryWriter bw = new BinaryWriter(target);
bw.Write(values.Length);
bw.Write(encodedLength);
ms.Position = 0;
byte[] buffer = new byte[encodedLength];
ms.Read(buffer, 0, encodedLength);
target.Write(buffer, 0, encodedLength);
}
