vp8/common/vfwsetting.hpp

   1 /*
   2  *  Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
   3  *
   4  *  Use of this source code is governed by a BSD-style license and patent
   5  *  grant that can be found in the LICENSE file in the root of the source
   6  *  tree. All contributing project authors may be found in the AUTHORS
   7  *  file in the root of the source tree.
   8  */
   9
  10
  11 #if !defined(VFWSETTING_HPP)
  12 #define VFWSETTING_HPP
  13 //______________________________________________________________________________
  14 //
  15 //  VFWSetting.hpp
  16 //
  17
  18 #include "four_cc.hpp"
  19 #include <iosfwd>
  20
  21 namespace vpxvp
  22 {
  23
  24     //--------------------------------------
  25     class VFWSetting
  26     {
  27         friend std::ostream& operator<<(std::ostream& os, const VFWSetting& vfws);
  28
  29     public:
  30
  31         enum Mode
  32         {
  33             m_setting,
  34             m_config
  35         };
  36
  37         enum
  38         {
  39             header_size = 8,
  40             Size = 16
  41         };
  42
  43         VFWSetting(four_cc fcc);
  44         ~VFWSetting();
  45
  46         four_cc fcc() const;
  47         Mode mode() const;
  48
  49         int setting() const;
  50         int value() const;
  51         void setting_value(int i_setting, int i_value);  //  Sets mode to m_setting
  52
  53         long size() const;
  54         const void* data() const;
  55         int data(const void* p_data, unsigned long ul_size);
  56
  57     private:
  58
  59         VFWSetting(const VFWSetting& vfws);  //  Not implemented
  60         VFWSetting& operator=(const VFWSetting& vfws);  //  Not implemented
  61
  62         int extract_(const void* p_data, unsigned long ul_size);
  63         void update_() const;
  64
  65         four_cc m_fcc;
  66         Mode m_mode;
  67         int m_i_setting;
  68         int m_i_value;
  69
  70         mutable unsigned char m_p_data[Size];
  71     };
  72
  73 }  //  namespace vpxvp
  74
  75 #endif  //  VFWSETTING_HPP