reactos/base/applications/sndrec32/audio_producer.hpp

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