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 #include "audio_def.hpp"
  12
  13 _AUDIO_NAMESPACE_START_
  14
  15 class audio_producer
  16 {
  17     protected:
  18         unsigned int bytes_played_;
  19
  20     public:
  21         /* Ctors */
  22         audio_producer() : bytes_played_(0), play_finished(0)
  23         {
  24         }
  25
  26         /* Dtor */
  27         virtual ~audio_producer(void)
  28         {
  29         }
  30
  31         /* Public Functions */
  32
  33         /* reads N bytes from the buffer */
  34         virtual unsigned int read(BYTE *, unsigned int) = 0;
  35
  36         virtual bool finished(void) = 0;
  37
  38         unsigned int bytes_played(void) const
  39         {
  40             return bytes_played_;
  41         }
  42
  43         void set_position(unsigned int pos)
  44         {
  45             bytes_played_ = pos;
  46         }
  47
  48         void set_position_start(void)
  49         {
  50             bytes_played_ = 0;
  51         }
  52
  53         void forward(unsigned int bytes)
  54         {
  55             bytes_played_ += bytes;
  56         }
  57
  58         void backward(unsigned int bytes)
  59         {
  60             bytes_played_ += bytes;
  61         }
  62
  63         void (* play_finished)(void);
  64 };
  65
  66 _AUDIO_NAMESPACE_END_
  67
  68 #endif /* _AUDIOAUDBUF__H_ */