HEVC Test Model (HM)  HM-16.3
ContextModel.h
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33 
34 
39 #ifndef __CONTEXTMODEL__
40 #define __CONTEXTMODEL__
41 
42 #if _MSC_VER > 1000
43 #pragma once
44 #endif // _MSC_VER > 1000
45 
46 #include "CommonDef.h"
47 #include "TComRom.h"
48 
51 
52 // ====================================================================================================================
53 // Class definition
54 // ====================================================================================================================
55 
58 {
59 public:
62 
63  UChar getState () { return ( m_ucState >> 1 ); }
64  UChar getMps () { return ( m_ucState & 1 ); }
65  Void setStateAndMps( UChar ucState, UChar ucMPS) { m_ucState = (ucState << 1) + ucMPS; }
66 
67  Void init ( Int qp, Int initValue );
68 
70  {
72  }
73 
75  {
77  }
78 
80 
81 #if FAST_BIT_EST
82  Void update( Int binVal )
83  {
84  m_ucState = m_nextState[m_ucState][binVal];
85  }
86  static Void buildNextStateTable();
87  static Int getEntropyBitsTrm( Int val ) { return m_entropyBits[126 ^ val]; }
88 #endif
91 
92 private:
94 
95  static const UInt m_totalStates = (1 << CONTEXT_STATE_BITS) * 2; //*2 for MPS = [0|1]
99 #if FAST_BIT_EST
100  static UChar m_nextState[m_totalStates][2 /*MPS = [0|1]*/];
101 #endif
103 };
104 
106 
107 #endif
108 
Int getEntropyBits(Short val)
Definition: ContextModel.h:79
static Int getEntropyBitsTrm(Int val)
Definition: ContextModel.h:87
Defines constants, macros and tool parameters.
void Void
Definition: TypeDef.h:285
UChar m_ucState
internal state variable
Definition: ContextModel.h:93
global variables & functions (header)
unsigned int UInt
Definition: TypeDef.h:297
UChar getState()
get current state
Definition: ContextModel.h:63
short Short
Definition: TypeDef.h:294
static const UInt m_totalStates
Definition: ContextModel.h:95
context model class
Definition: ContextModel.h:57
Void updateLPS()
Definition: ContextModel.h:69
static UChar m_nextState[m_totalStates][2]
Definition: ContextModel.h:100
Void setStateAndMps(UChar ucState, UChar ucMPS)
set state and MPS
Definition: ContextModel.h:65
unsigned char UChar
Definition: TypeDef.h:293
Void setBinsCoded(UInt val)
Definition: ContextModel.h:89
static Void buildNextStateTable()
UInt getBinsCoded()
Definition: ContextModel.h:90
static const Int m_entropyBits[m_totalStates]
Definition: ContextModel.h:98
UChar getMps()
get curret MPS
Definition: ContextModel.h:64
static const UChar m_aucNextStateMPS[m_totalStates]
Definition: ContextModel.h:96
int Int
Definition: TypeDef.h:296
static const UChar m_aucNextStateLPS[m_totalStates]
Definition: ContextModel.h:97
#define CONTEXT_STATE_BITS
Definition: TComRom.h:136
Void updateMPS()
Definition: ContextModel.h:74
Void init(Int qp, Int initValue)
initialize state with initial probability
Void update(Int binVal)
Definition: ContextModel.h:82