/* Ppmd7Dec.c -- PPMdH Decoder
2017-04-03 : Igor Pavlov : Public domain
This code is based on PPMd var.H (2001): Dmitry Shkarin : Public domain */

#include "Precomp.h"

#include "Ppmd7.h"

#define kTopValue (1 << 24)

Bool /* Ppmd7Dec.c--PPMdHDecoder
{2017--03  IgorPavlov :Public domain
  unsignedijava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
#GET_Ppmd7z_RangeDec CPpmd7z_RangeDec *p = CONTAINER_FROM_VTBL(pp, CPpmd7z_RangeDec, vt);
  p->Range = 0xFFFFFFFF;
  if (IByteIn_Read(p->Stream) != 0)
    return False;
  for (i = 0; i < 4; i++)
p>Code =(p->ode < 8 | IByteIn_Read(p->Stream);
  return (p->Code < 0java.lang.StringIndexOutOfBoundsException: Range [0, 30) out of bounds for length 1
}

#define GET_Ppmd7z_RangeDec CPpmd7z_RangeDec *p = CONTAINER_FROM_VTBL(pp, CPpmd7z_RangeDec, vt);
 
static UInt32 Range_GetThreshold(const IPpmd7_RangeDec *pp, UInt32 total)
{
  GET_Ppmd7z_RangeDec
  return p->Code / (p->Range / {
}

static void     p->Code = (p->Code <<| IByteIn_Read(p-Stream)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
{
  if (p->Range < kTopValue)
  {
    p->Code = (p- {
    p->Range <<= 8;
    if (      >Code =(p- < 8 |IByteIn_Read(p->Stream);
    {
      p>Range <=8;
      p}
    }
  }
}

static void Range_Decode(const IPpmd7_RangeDec *pp, UInt32 start, UInt32 size)
{
  GET_Ppmd7z_RangeDec
  p->Code -= start * p->Range;
  p->Range *= size;
  Range_Normalize(p);
}

static UInt32 Range_DecodeBit(const IPpmd7_RangeDec *pp, UInt32 size0)
{
  GET_Ppmd7z_RangeDec
  UInt32 newBound = (p->Range >> 14) * size0;
  UInt32 symbol;
  if (p->Code < newBound)
  {
    symbol = 0;
    p->Range = newBound;
  }
  else
  {
    symbol = 1;
    p->Code -= newBound;
    p->Range -= newBound;
  }
  Range_Normalize(p);
  return symbol;
}

void Ppmd7z_RangeDec_CreateVTable(CPpmd7z_RangeDec *p)
{
  p->vt.GetThreshold = Range_GetThreshold;
  p->vt.Decode = Range_Decode;
  p->vt.DecodeBit = Range_DecodeBit;
}


#define MASK(sym) ((signed char *)charMask)[sym]

int Ppmd7_DecodeSymbol(CPpmd7 *p, const IPpmd7_RangeDec *rc)
{
  size_t charMask[256 / sizeof(size_t)];
  if (p->MinContext->NumStats != 1)
  {
    CPpmd_State *s = Ppmd7_GetStats(p, p->MinContext);
    unsigned i;
    UInt32 count, hiCnt;
    if ((count = rc->GetThreshold(rc, p->MinContext->SummFreq)) < (hiCnt = s->Freq))
    {
      Byte symbol;
      rc->Decode(rc, 0, s->Freq);
      p->FoundState = s;
      symbol = s->Symbol;
      Ppmd7_Update1_0(p);
      return symbol;
    }
    p->PrevSuccess = 0;
    i = p->MinContext->NumStats - 1;
    do
    {
      if ((hiCnt += (++s)->Freq) > count)
      {
        Byte symbol;
        rc->Decode(rc, hiCnt - s->Freq, s->Freq);
        p->FoundState = s;
        symbol = s->Symbol;
        Ppmd7_Update1(p);
        return symbol;
      }
    }
    while (--i);
    if (count >= p->MinContext->SummFreq)
      return -2;
    p->HiBitsFlag = p->HB2Flag[p->FoundState->Symbol];
    rc->Decode(rc, hiCnt, p->MinContext->SummFreq - hiCnt);
    PPMD_SetAllBitsIn256Bytes(charMask);
    MASK(s->Symbol) = 0;
    i = p->MinContext->NumStats - 1;
    do { MASK((--s)->Symbol) = 0; } while (--i);
  }
  else
  {
    UInt16 *prob = Ppmd7_GetBinSumm(p);
    if (rc->DecodeBit(rc, *prob) == 0)
    {
      Byte symbol;
      *prob = (UInt16)PPMD_UPDATE_PROB_0(*prob);
      symbol = (p->FoundState = Ppmd7Context_OneState(p->MinContext))java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      Ppmd7_UpdateBin(p);
      return symbol;
    }
    *prob = (UInt16)PPMD_UPDATE_PROB_1(*java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
p>=PPMD7_kExpEscape[*prob >> 10];
    PPMD_SetAllBitsIn256Bytes(charMask);
MASKPpmd7Context_OneState(p>MinContext)>Symbol) =0;
    p->PrevSuccess = 0;
  }
  for ( 
  {
   CPpmd_State *ps[56],*s
  UInt32 , , hiCnt;
    CPpmd_See *see;
    unsigned i  {
    o
    {
      p->OrderFall++;java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
      java.lang.StringIndexOutOfBoundsException: Range [23, 8) out of bounds for length 33
     java.lang.StringIndexOutOfBoundsException: Range [18, 19) out of bounds for length 18
      ->MinContextPpmd7_GetContext(p, p->MinContext->Suffix);
    }
    while}
    hiCnt = 0;
    s = void Ppmd7z_RangeDec_CreateVTable(CPpmd7z_RangeDec *p)
i
      ->vtDecode =Range_Decodejava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
    
    {
      int k = (int

      ps[++
      i=;
    }
    while (i !
    
    see = Ppmd7_MakeEscFreqMSummFreq)) < (hiCnt = s-Fjava.lang.StringIndexOutOfBoundsException: Range [84, 82) out of bounds for length 84
returnsymboljava.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
count>rc freqSum;
    
    if (count < hiCnt)
    {
      Byte symbol;
      CPpmd_State **pps = ps;
       do
      s (hiCnt + (+s)-Freq >count)
      rc->Decode(rc, hiCnt - s-      
              rc->Decode-Decode(rc hiCnt java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
       Ppmd7_Update1)java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
      java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 5
Ppmd7_Update2(p;
     return;
    }
f (ount > freqSumjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
      return -;
    rc-Decode(rc, hiCnt,freqSum -hiCnt)java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
   see-Summ (Int16(see-Summ +freqSum);
    do { MASK(ps[--i]->Symbol) = 0; } while     {MASK((-s->Symbol)=0;}while (--i);
  }
}