extl/platform_/windows/counter/multimedia_counter.h

   1 /* ///////////////////////////////////////////////////////////////////////
   2  * File:                multimedia_counter.h
   3  *
   4  * Created:             08.02.17
   5  * Updated:             08.11.13
   6  *
   7  * Brief:               The multimedia_counter class - precision: ms
   8  *
   9  * [<Home>]
  10  * Copyright (c) 2008-2020, Waruqi All rights reserved.
  11  * //////////////////////////////////////////////////////////////////// */
  12 #ifndef EXTL_PLATFORM_WINDOWS_MULTIMEDIA_COUNTER_H
  13 #define EXTL_PLATFORM_WINDOWS_MULTIMEDIA_COUNTER_H
  14
  15 /*!\file multimedia_counter.h
  16  * \brief multimedia_counter class - precision: ms
  17  */
  18 #ifndef __cplusplus
  19 #       error multimedia_counter.h need be supported by c++.
  20 #endif
  21
  22 /* ///////////////////////////////////////////////////////////////////////
  23  * Includes
  24  */
  25 #include "prefix.h"
  26 #include <mmsystem.h>
  27
  28 #if !defined(EXTL_COMPILER_IS_GCC) && \
  29                 !defined(EXTL_COMPILER_IS_BORLAND)
  30 #       pragma comment(lib, "WinMM.lib")
  31 #endif
  32
  33 /* ///////////////////////////////////////////////////////////////////////
  34  * ::extl::platform::windows namespace
  35  */
  36 EXTL_WINDOWS_BEGIN_WHOLE_NAMESPACE
  37
  38 /*!\brief multimedia_counter class
  39  *
  40  * \ingroup extl_group_counter
  41  */
  42 class multimedia_counter
  43 {
  44         /// \name Constructors
  45         /// @{
  46         public :
  47                 multimedia_counter();
  48         /// @}
  49
  50         /// \name Types
  51         /// @{
  52         private:
  53                 typedef multimedia_counter              class_type;
  54 #ifdef EXTL_64BIT_INT_SUPPORT
  55                 typedef e_uint64_t                              interval_type;
  56 #else
  57                 typedef e_uint32_t                              interval_type;
  58 #endif
  59                 typedef DWORD                                   size_type;
  60         /// @}
  61
  62         /// \name Operations
  63         /// @{
  64         public:
  65                 inline void                                             start();
  66                 inline void                                             stop();
  67         /// @}
  68
  69         /// \name Attributes
  70         /// @{
  71         public:
  72                 inline interval_type                    count() const;
  73                 inline interval_type                    s() const;
  74                 inline interval_type                    ms() const;
  75                 inline interval_type                    us() const;
  76         /// @}
  77
  78         /// \name Members
  79         /// @{
  80         private:
  81                 size_type                                               m_start;
  82                 size_type                                               m_stop;
  83         /// @}
  84 };
  85
  86 /* ///////////////////////////////////////////////////////////////////////
  87  * Class implementation
  88  */
  89 inline multimedia_counter::multimedia_counter()
  90         : m_start(0), m_stop(0)
  91 {
  92 }
  93 inline void multimedia_counter::start()
  94 {
  95         m_start = ::timeGetTime();
  96 }
  97
  98 inline void multimedia_counter::stop()
  99 {
 100         m_stop = ::timeGetTime();
 101 }
 102 inline multimedia_counter::interval_type multimedia_counter::count() const
 103 {
 104         return static_cast<interval_type>(m_stop - m_start);
 105 }
 106 inline multimedia_counter::interval_type multimedia_counter::s() const
 107 {
 108         return count() / interval_type(1000);
 109 }
 110 inline multimedia_counter::interval_type multimedia_counter::ms() const
 111 {
 112         return count();
 113 }
 114 inline multimedia_counter::interval_type multimedia_counter::us() const
 115 {
 116         return count() * interval_type(1000);
 117 }
 118
 119 /* ///////////////////////////////////////////////////////////////////////
 120  * ::extl::platform::windows namespace
 121  */
 122 EXTL_WINDOWS_END_WHOLE_NAMESPACE
 123
 124 /* //////////////////////////////////////////////////////////////////// */
 125 #endif /* EXTL_PLATFORM_WINDOWS_MULTIMEDIA_COUNTER_H */
 126 /* //////////////////////////////////////////////////////////////////// */