Dirac - A Video Codec

Created by the British Broadcasting Corporation.


me_mode_decn.h
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37
38#ifndef _ME_MODE_DECN_H_
39#define _ME_MODE_DECN_H_
40
43
44namespace dirac
45{
46 class EncQueue;
47
49
70 {
71
72 public:
74
80
82
86
88
93 void DoModeDecn( EncQueue& my_buffer , int pic_num );
94
95 private:
96 ModeDecider( const ModeDecider& cpy );//private, body-less copy constructor: this class should not be copied
97 ModeDecider& operator=( const ModeDecider& rhs );//private, body-less assignment=: this class should not be assigned
98
99 //functions
100 void DoSBDecn(); //called by do_mode_decn for each SB
101
103 void DoLevelDecn( int level );
104
106 float DoUnitDecn( const int xpos , const int ypos , const int level );
107
109 void DoME( const int xpos , const int ypos , const int level );
110
112 float ModeCost( const int xindex , const int yindex );
113
115 ValueType GetDCPred( int xblock , int yblock );
116
118 float GetDCVar( const ValueType dc_val , const ValueType dc_pred);
119
121 void SetDC( EncQueue& my_buffer, int pic_num);
122
124 void SetDC(const PicArray& pic_data, MEData& me_data,CompSort cs);
125
127 ValueType GetBlockDC(const PicArray& pic_data, int xloc,int yloc,int split, CompSort cs);
128
129
130 // Member data
132
135
138
140 float m_lambda;
141
144
145
148
151
156
159
160 //position variables, used in all the mode decisions
161 int m_xsb_loc,m_ysb_loc; //coords of the current SB
162
163 };
164
165} // namespace dirac
166
167#endif
Definition of class SequenceHeaderByteIO.
Definition accessunit_byteio.h:52
CompSort
Types of picture component.
Definition common.h:87
short ValueType
Type of picture data (including motion compensated residuals)
Definition common.h:70
A template class for one-dimensional arrays.
Definition arrays.h:90
Picture type Class.
Definition common.h:229
A class for picture component data.
Definition common.h:719
Structure to hold motion parameters when motion comp is used.
Definition common.h:968
Parameters for the encoding process.
Definition common.h:1280
Class for all the motion estimation data.
Definition motion.h:314
Holds pictures both for reference and to overcome reordering delay.
Definition enc_queue.h:59
OneDArray< float > m_level_factor
Correction factor for comparing SAD costs for different SB splittings.
Definition me_mode_decn.h:143
int num_refs
Definition me_mode_decn.h:155
float GetDCVar(const ValueType dc_val, const ValueType dc_pred)
Get a measure of DC value variance.
float m_lambda
The Lagrangian parameter for motion estimation.
Definition me_mode_decn.h:140
const PicturePredParams * m_predparams
A local pointer to the picture prediction params.
Definition me_mode_decn.h:137
IntraBlockDiff * m_intradiff
Definition me_mode_decn.h:157
ModeDecider & operator=(const ModeDecider &rhs)
float ModeCost(const int xindex, const int yindex)
Return a measure of the cost of coding a given mode.
OneDArray< MEData * > m_me_data_set
Motion vector data for each level of splitting.
Definition me_mode_decn.h:150
ModeDecider(const EncoderParams &encp)
Constructor.
int m_xsb_loc
Definition me_mode_decn.h:161
PictureSort m_psort
Definition me_mode_decn.h:131
OneDArray< float > m_mode_factor
Correction factor for comparing mode costs for different SB splittings.
Definition me_mode_decn.h:147
void DoME(const int xpos, const int ypos, const int level)
Do motion estimation for a prediction unit at a given level.
void SetDC(EncQueue &my_buffer, int pic_num)
Go through all the intra blocks and extract the chroma dc values to be coded.
const EncoderParams & m_encparams
A local reference to the encoder parameters.
Definition me_mode_decn.h:134
BiBlockDiff * m_bicheckdiff
Definition me_mode_decn.h:158
ValueType GetDCPred(int xblock, int yblock)
Get a prediction for the dc value of a block.
const PicArray * m_ref1_updata
Definition me_mode_decn.h:153
float DoUnitDecn(const int xpos, const int ypos, const int level)
Decide on a mode for a given prediction unit (block, sub-SB or SB)
void SetDC(const PicArray &pic_data, MEData &me_data, CompSort cs)
Called by previous fn for each component.
~ModeDecider()
Destructor.
void DoLevelDecn(int level)
Make a mode decision given a particular level of decomposition.
ValueType GetBlockDC(const PicArray &pic_data, int xloc, int yloc, int split, CompSort cs)
Called by previous fn for each block.
const PicArray * m_ref2_updata
Definition me_mode_decn.h:154
ModeDecider(const ModeDecider &cpy)
int m_ysb_loc
Definition me_mode_decn.h:161
const PicArray * m_pic_data
Definition me_mode_decn.h:152
void DoModeDecn(EncQueue &my_buffer, int pic_num)
Does the actual mode decision.
A class for calculating the difference between a block and its DC value (average)
Definition me_utils.h:199
A virtual class for bi-directional differences.
Definition me_utils.h:231

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