base/applications/sndrec32/audio_producer.hpp

   1 /* PROJECT:         ReactOS sndrec32
   2  * LICENSE:         GPL - See COPYING in the top level directory
   3  * FILE:            base/applications/sndrec32/audio_producer.hpp
   4  * PURPOSE:         Audio producer
   5  * PROGRAMMERS:     Marco Pagliaricci (irc: rendar)
   6  */
   7
   8 #ifndef _AUDIOAUDBUF__H_
   9 #define _AUDIOAUDBUF__H_
  10
  11
  12
  13 #include "audio_def.hpp"
  14 #include "audio_producer.hpp"
  15
  16
  17
  18
  19
  20
  21 _AUDIO_NAMESPACE_START_
  22
  23
  24
  25
  26
  27 class audio_producer
  28 {
  29
  30
  31     protected:
  32
  33
  34         unsigned int bytes_played_;
  35
  36
  37
  38
  39
  40     public:
  41
  42
  43         //
  44         // Ctors
  45         //
  46
  47         audio_producer ( ) : bytes_played_( 0 ), play_finished ( 0 )
  48         {  }
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58         //
  59         // Dtor
  60         //
  61
  62         virtual ~audio_producer( void )
  63         {  }
  64
  65
  66
  67
  68         //
  69         // Public Functions
  70         //
  71
  72
  73         //reads N bytes from the buffer
  74         virtual unsigned int read( BYTE *, unsigned int ) = 0;
  75
  76         virtual bool finished ( void ) = 0;
  77
  78
  79
  80
  81         unsigned int bytes_played( void ) const
  82         {
  83             return bytes_played_;
  84         }
  85
  86
  87         void set_position( unsigned int pos )
  88         {
  89             bytes_played_ = pos;
  90         }
  91
  92         void set_position_start( void )
  93         {
  94             bytes_played_ = 0 ;
  95         }
  96
  97
  98
  99         void forward( unsigned int bytes )
 100         {
 101             bytes_played_ += bytes ;
 102         }
 103
 104
 105         void backward( unsigned int bytes )
 106         {
 107             bytes_played_ += bytes ;
 108         }
 109
 110         void ( * play_finished )( void );
 111
 112
 113
 114
 115 };
 116
 117
 118
 119
 120 _AUDIO_NAMESPACE_END_
 121
 122
 123
 124
 125
 126
 127 #endif //ifdef _AUDIOAUDBUF__H_