Dirac - A Video Codec

Created by the British Broadcasting Corporation.


picture_byteio.h
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1 /* ***** BEGIN LICENSE BLOCK *****
2 *
3 * $Id: picture_byteio.h,v 1.1 2008/01/31 11:25:15 tjdwave Exp $ $Name: Dirac_1_0_2 $
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5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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16 * The Original Code is BBC Research and Development code.
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23 * Contributor(s): Andrew Kennedy (Original Author)
24 * Anuradha Suraparaju
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38 
42 #ifndef picture_byteio_h
43 #define picture_byteio_h
44 
45 
46 //LOCAL INCLUDES
47 #include <libdirac_byteio/parseunit_byteio.h> // Parent class
48 #include <libdirac_byteio/mvdata_byteio.h> // Contains mvdata streams
49 #include <libdirac_byteio/transform_byteio.h> // Transform header
50 
51 // DIRAC includes
52 #include <libdirac_common/common.h> // PictureType etc
53 
54 
55 namespace dirac
56 {
61  {
62  public:
63 
69  PictureByteIO(PictureParams& frame_params,
70  int frame_num);
71 
72 
78  PictureByteIO(PictureParams& frame_params,
79  const ParseUnitByteIO& parseunit_byteio);
80 
84  virtual ~PictureByteIO();
85 
90  void CollateByteStats(DiracByteStats& dirac_byte_stats);
91 
95  bool Input();
96 
100  void Output();
101 
102 
103 
104  const std::string GetBytes();
105 
106  int GetSize() const;
107 
111  ParseUnitType GetType() const { return PU_PICTURE;}
112 
116  int IsRef() const { return (GetParseCode()&0x0C)==0x0C;}
117 
121  int IsNonRef() const { return (GetParseCode()&0x0C)==0x08;}
122 
126  int NumRefs() const { return (GetParseCode()&0x03);}
127 
131  bool IsIntra() const { return IsPicture() && (NumRefs()==0) ; }
132 
136  bool IsInter() const { return IsPicture() && (NumRefs()>0) ; }
137 
138  /***
139  * Sets the MVDataIO
140  */
141  void SetMvData(MvDataByteIO *mv_data) {m_mv_data = mv_data; }
142 
143  /***
144  * Sets the TransformByteIo
145  */
146  void SetTransformData(TransformByteIO *transform_data) {m_transform_data = transform_data; }
147 
148  protected:
149 
150 
151  private:
152 
157  unsigned char CalcParseCode() const;
158 
162  void InputReferencePictures();
163 
167  void InputRetiredPicture();
168 
172  void SetPictureType();
173 
177  void SetReferenceType();
178 
182  void SetEntropyCodingFlag();
183 
188 
193 
198 
203 
204  };
205 
206 } // namespace dirac
207 
208 #endif

© 2004 British Broadcasting Corporation. Dirac code licensed under the Mozilla Public License (MPL) Version 1.1.
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