internal int createChild(ModelPPM model, State pStats, StateRef firstState)
{
PPMContext pc = getTempPPMContext(model.SubAlloc.Heap);
pc.Address = model.SubAlloc.allocContext();
if (pc != null)
{
pc.NumStats = 1;
pc.setOneState(firstState);
pc.setSuffix(this);
pStats.SetSuccessor(pc);
}
return(pc.Address);
}
private void restartModelRare()
{
Utility.Fill(charMask, 0);
subAlloc.initSubAllocator();
initRL = -(maxOrder < 12 ? maxOrder : 12) - 1;
int addr = subAlloc.allocContext();
minContext.Address = addr;
maxContext.Address = addr;
minContext.setSuffix(0);
orderFall = maxOrder;
minContext.NumStats = 256;
minContext.FreqData.SummFreq = minContext.NumStats + 1;
addr = subAlloc.allocUnits(256 / 2);
foundState.Address = addr;
minContext.FreqData.SetStats(addr);
State state = new State(subAlloc.Heap);
addr = minContext.FreqData.GetStats();
runLength = initRL;
prevSuccess = 0;
for (int i = 0; i < 256; i++)
{
state.Address = addr + i * State.Size;
state.Symbol = i;
state.Freq = 1;
state.SetSuccessor(0);
}
for (int i = 0; i < 128; i++)
{
for (int k = 0; k < 8; k++)
{
for (int m = 0; m < 64; m += 8)
{
binSumm[i][k + m] = BIN_SCALE - InitBinEsc[k] / (i + 2);
}
}
}
for (int i = 0; i < 25; i++)
{
for (int k = 0; k < 16; k++)
{
SEE2Cont[i][k].Initialize(5 * i + 10);
}
}
}
private void updateModel()
{
//System.out.println("ModelPPM.updateModel()");
// STATE fs = *FoundState, *p = NULL;
StateRef fs = tempStateRef1;
fs.Values = foundState;
State p = tempState3.Initialize(Heap);
State tempState = tempState4.Initialize(Heap);
PPMContext pc = tempPPMContext3.Initialize(Heap);
PPMContext successor = tempPPMContext4.Initialize(Heap);
int ns1, ns, cf, sf, s0;
pc.Address = minContext.getSuffix();
if (fs.Freq < MAX_FREQ / 4 && pc.Address != 0)
{
if (pc.NumStats != 1)
{
p.Address = pc.FreqData.GetStats();
if (p.Symbol != fs.Symbol)
{
do
{
p.IncrementAddress();
} while (p.Symbol != fs.Symbol);
tempState.Address = p.Address - State.Size;
if (p.Freq >= tempState.Freq)
{
State.PPMDSwap(p, tempState);
p.DecrementAddress();
}
}
if (p.Freq < MAX_FREQ - 9)
{
p.IncrementFreq(2);
pc.FreqData.IncrementSummFreq(2);
}
}
else
{
p.Address = pc.getOneState().Address;
if (p.Freq < 32)
{
p.IncrementFreq(1);
}
}
}
if (orderFall == 0)
{
foundState.SetSuccessor(createSuccessors(true, p));
minContext.Address = foundState.GetSuccessor();
maxContext.Address = foundState.GetSuccessor();
if (minContext.Address == 0)
{
updateModelRestart();
return;
}
return;
}
subAlloc.Heap[subAlloc.PText] = (byte)fs.Symbol;
subAlloc.incPText();
successor.Address = subAlloc.PText;
if (subAlloc.PText >= subAlloc.FakeUnitsStart)
{
updateModelRestart();
return;
}
// // Debug
// subAlloc.dumpHeap();
if (fs.GetSuccessor() != 0)
{
if (fs.GetSuccessor() <= subAlloc.PText)
{
fs.SetSuccessor(createSuccessors(false, p));
if (fs.GetSuccessor() == 0)
{
updateModelRestart();
return;
}
}
if (--orderFall == 0)
{
successor.Address = fs.GetSuccessor();
if (maxContext.Address != minContext.Address)
{
subAlloc.decPText(1);
}
}
}
else
{
foundState.SetSuccessor(successor.Address);
fs.SetSuccessor(minContext);
}
// // Debug
// subAlloc.dumpHeap();
ns = minContext.NumStats;
s0 = minContext.FreqData.SummFreq - (ns) - (fs.Freq - 1);
for (pc.Address = maxContext.Address; pc.Address != minContext.Address; pc.Address = pc.getSuffix())
{
if ((ns1 = pc.NumStats) != 1)
{
if ((ns1 & 1) == 0)
{
//System.out.println(ns1);
pc.FreqData.SetStats(subAlloc.expandUnits(pc.FreqData.GetStats(), Utility.URShift(ns1, 1)));
if (pc.FreqData.GetStats() == 0)
{
updateModelRestart();
return;
}
}
// bug fixed
// int sum = ((2 * ns1 < ns) ? 1 : 0) +
// 2 * ((4 * ((ns1 <= ns) ? 1 : 0)) & ((pc.getFreqData()
// .getSummFreq() <= 8 * ns1) ? 1 : 0));
int sum = ((2 * ns1 < ns) ? 1 : 0) +
2 * (((4 * ns1 <= ns) ? 1 : 0) & ((pc.FreqData.SummFreq <= 8 * ns1) ? 1 : 0));
pc.FreqData.IncrementSummFreq(sum);
}
else
{
p.Address = subAlloc.allocUnits(1);
if (p.Address == 0)
{
updateModelRestart();
return;
}
p.SetValues(pc.getOneState());
pc.FreqData.SetStats(p);
if (p.Freq < MAX_FREQ / 4 - 1)
{
p.IncrementFreq(p.Freq);
}
else
{
p.Freq = MAX_FREQ - 4;
}
pc.FreqData.SummFreq = (p.Freq + initEsc + (ns > 3 ? 1 : 0));
}
cf = 2 * fs.Freq * (pc.FreqData.SummFreq + 6);
sf = s0 + pc.FreqData.SummFreq;
if (cf < 6 * sf)
{
cf = 1 + (cf > sf ? 1 : 0) + (cf >= 4 * sf ? 1 : 0);
pc.FreqData.IncrementSummFreq(3);
}
else
{
cf = 4 + (cf >= 9 * sf ? 1 : 0) + (cf >= 12 * sf ? 1 : 0) + (cf >= 15 * sf ? 1 : 0);
pc.FreqData.IncrementSummFreq(cf);
}
p.Address = pc.FreqData.GetStats() + ns1 * State.Size;
p.SetSuccessor(successor);
p.Symbol = fs.Symbol;
p.Freq = cf;
pc.NumStats = ++ns1;
}
int address = fs.GetSuccessor();
maxContext.Address = address;
minContext.Address = address;
//TODO-----debug
// int pos = minContext.getFreqData().getStats();
// State a = new State(getHeap());
// a.Address=pos);
// pos+=State.size;
// a.Address=pos);
//--dbg end
return;
}
private void restartModelRare()
{
Utility.Fill(charMask, 0);
subAlloc.initSubAllocator();
initRL = -(maxOrder < 12 ? maxOrder : 12) - 1;
int addr = subAlloc.allocContext();
minContext.Address = addr;
maxContext.Address = addr;
minContext.setSuffix(0);
orderFall = maxOrder;
minContext.NumStats = 256;
minContext.FreqData.SummFreq = minContext.NumStats + 1;
addr = subAlloc.allocUnits(256/2);
foundState.Address = addr;
minContext.FreqData.SetStats(addr);
State state = new State(subAlloc.Heap);
addr = minContext.FreqData.GetStats();
runLength = initRL;
prevSuccess = 0;
for (int i = 0; i < 256; i++)
{
state.Address = addr + i*State.Size;
state.Symbol = i;
state.Freq = 1;
state.SetSuccessor(0);
}
for (int i = 0; i < 128; i++)
{
for (int k = 0; k < 8; k++)
{
for (int m = 0; m < 64; m += 8)
{
binSumm[i][k + m] = BIN_SCALE - InitBinEsc[k]/(i + 2);
}
}
}
for (int i = 0; i < 25; i++)
{
for (int k = 0; k < 16; k++)
{
SEE2Cont[i][k].Initialize(5*i + 10);
}
}
}
internal int createChild(ModelPPM model, State pStats, StateRef firstState)
{
PPMContext pc = getTempPPMContext(model.SubAlloc.Heap);
pc.Address = model.SubAlloc.allocContext();
if (pc != null)
{
pc.NumStats = 1;
pc.setOneState(firstState);
pc.setSuffix(this);
pStats.SetSuccessor(pc);
}
return pc.Address;
}