Dirac - A Video Codec

Created by the British Broadcasting Corporation.


quant_chooser.h
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37 
38 
39 #ifndef _QUANT_CHOOSER_H_
40 #define _QUANT_CHOOSER_H_
41 
42 #include <libdirac_common/arrays.h>
44 #include <libdirac_common/common.h>
45 
46 namespace dirac
47 {
49 
53  {
54  public:
55 
57  QuantChooser( const CoeffArray& pic_data , const float lambda );
58 
60  int GetBestQuant( Subband& node );
61 
63  void SetEntropyCorrection( const float ecfac ){ m_entropy_correctionfactor = ecfac; }
64  private:
66  QuantChooser(const QuantChooser& cpy);
67 
69  QuantChooser& operator=(const QuantChooser& rhs);
70 
72  void IntegralErrorCalc( Subband& node , const int xratio , const int yratio );
73 
75  void NonIntegralErrorCalc( Subband& node, const int xratio, const int yratio );
76 
78  void LagrangianCalc();
79 
81  void SelectBestQuant();
82 
83  CoeffType BlockAbsMax( const Subband& node );
84 
86  void SetSkip( CodeBlock& cblock , const int qidx);
87 
88  private:
90  float m_subband_wt;
91 
95  int m_top_idx;
98 
101 
104 
106  const float m_lambda;
107 
110 
114  int m_count1;
123 
124  };
125 
126 } // namespace dirac
127 
128 
129 
130 #endif

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