Ppmd.h File Reference

#include "CpuArch.h"

Go to the source code of this file.

Data Structures
struct	CPpmd_See
struct	CPpmd_State
struct	CPpmd_State2_
struct	CPpmd_State4_

Macros
#define	PPMD_INT_BITS   7
#define	PPMD_PERIOD_BITS   7
#define	PPMD_BIN_SCALE   (1 << (PPMD_INT_BITS + PPMD_PERIOD_BITS))
#define	PPMD_GET_MEAN_SPEC(summ, shift, round)
#define	PPMD_GET_MEAN(summ)
#define	PPMD_UPDATE_PROB_0(prob)
#define	PPMD_UPDATE_PROB_1(prob)
#define	PPMD_N1   4
#define	PPMD_N2   4
#define	PPMD_N3   4
#define	PPMD_N4   ((128 + 3 - 1 * PPMD_N1 - 2 * PPMD_N2 - 3 * PPMD_N3) / 4)
#define	PPMD_NUM_INDEXES   (PPMD_N1 + PPMD_N2 + PPMD_N3 + PPMD_N4)
#define	Ppmd_See_UPDATE(p)
#define	Ppmd_Ref_Type(type)
#define	Ppmd_GetRef(p, ptr)
#define	Ppmd_GetPtr(p, offs)
#define	Ppmd_GetPtr_Type(p, offs, type)
#define	Ppmd_GET_SUCCESSOR(p)
#define	Ppmd_SET_SUCCESSOR(p, v)
#define	PPMD_SetAllBitsIn256Bytes(p)

Typedefs
typedef struct CPpmd_State2_	CPpmd_State2
typedef struct CPpmd_State4_	CPpmd_State4

Functions
typedef	Ppmd_Ref_Type (CPpmd_State) CPpmd_State_Ref
typedef	Ppmd_Ref_Type (void) CPpmd_Void_Ref
typedef	Ppmd_Ref_Type (Byte) CPpmd_Byte_Ref

Macro Definition Documentation

PPMD_BIN_SCALE

#define PPMD_BIN_SCALE   (1 << (PPMD_INT_BITS + PPMD_PERIOD_BITS))

PPMD_GET_MEAN

#define PPMD_GET_MEAN

(

summ

)

Value:

PPMD_GET_MEAN_SPEC((summ), PPMD_PERIOD_BITS, 2)

PPMD_GET_MEAN_SPEC

#define PPMD_GET_MEAN_SPEC	(		summ,
			shift,
			round )

Value:

(((summ) + (1 << ((shift) - (round)))) >> (shift))

Ppmd_GET_SUCCESSOR

#define Ppmd_GET_SUCCESSOR

(

p

)

Value:

    ( (CPpmd_Void_Ref) ((p)->Successor_0 | ((UInt32)(p)->Successor_1 << 16)) )

Ppmd_GetPtr

#define Ppmd_GetPtr	(		p,
			offs )

Value:

((void *)((p)->Base + (offs)))

Ppmd_GetPtr_Type

#define Ppmd_GetPtr_Type	(		p,
			offs,
			type )

Value:

((type *)Ppmd_GetPtr(p, offs))

Ppmd_GetRef

#define Ppmd_GetRef	(		p,
			ptr )

Value:

((UInt32)((Byte *)(ptr) - (p)->Base))

PPMD_INT_BITS

#define PPMD_INT_BITS   7

PPMD_N1

#define PPMD_N1   4

PPMD_N2

#define PPMD_N2   4

PPMD_N3

#define PPMD_N3   4

PPMD_N4

#define PPMD_N4   ((128 + 3 - 1 * PPMD_N1 - 2 * PPMD_N2 - 3 * PPMD_N3) / 4)

PPMD_NUM_INDEXES

#define PPMD_NUM_INDEXES   (PPMD_N1 + PPMD_N2 + PPMD_N3 + PPMD_N4)

PPMD_PERIOD_BITS

#define PPMD_PERIOD_BITS   7

Ppmd_Ref_Type

#define Ppmd_Ref_Type

(

type

)

Value:

UInt32

Ppmd_See_UPDATE

#define Ppmd_See_UPDATE

(

p

)

Value:

  { if ((p)->Shift < PPMD_PERIOD_BITS && --(p)->Count == 0) \
    { (p)->Summ = (UInt16)((p)->Summ << 1); \
      (p)->Count = (Byte)(3 << (p)->Shift++); }}

Ppmd_SET_SUCCESSOR

#define Ppmd_SET_SUCCESSOR	(		p,
			v )

Value:

    { \
    (p)->Successor_0 = (UInt16)((UInt32)(v) /* & 0xFFFF */); \
    (p)->Successor_1 = (UInt16)(((UInt32)(v) >> 16) /* & 0xFFFF */); }

PPMD_SetAllBitsIn256Bytes

#define PPMD_SetAllBitsIn256Bytes

(

p

)

Value:

  { size_t z; for (z = 0; z < 256 / sizeof(p[0]); z += 8) { \
  p[z+7] = p[z+6] = p[z+5] = p[z+4] = p[z+3] = p[z+2] = p[z+1] = p[z+0] = ~(size_t)0; }}

PPMD_UPDATE_PROB_0

#define PPMD_UPDATE_PROB_0

(

prob

)

Value:

((prob) + (1 << PPMD_INT_BITS) - PPMD_GET_MEAN(prob))

PPMD_UPDATE_PROB_1

#define PPMD_UPDATE_PROB_1

(

prob

)

Value:

((prob) - PPMD_GET_MEAN(prob))

Typedef Documentation

CPpmd_State2

typedef struct CPpmd_State2_ CPpmd_State2

CPpmd_State4

typedef struct CPpmd_State4_ CPpmd_State4

Function Documentation

Ppmd_Ref_Type() [1/3]

typedef Ppmd_Ref_Type

(

Byte

)

Ppmd_Ref_Type() [2/3]

typedef Ppmd_Ref_Type

(

CPpmd_State

)

Ppmd_Ref_Type() [3/3]

typedef Ppmd_Ref_Type

(

void

)