vp8/common/vfwsetting.hpp

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