/* PROJECT:         ReactOS sndrec32
 * LICENSE:         GPL - See COPYING in the top level directory
 * FILE:            base/applications/sndrec32/audio_producer.hpp
 * PURPOSE:         Audio producer
 * PROGRAMMERS:     Marco Pagliaricci (irc: rendar)
 */

#ifndef _AUDIOAUDBUF__H_
#define _AUDIOAUDBUF__H_



#include "audio_def.hpp"
#include "audio_producer.hpp"






_AUDIO_NAMESPACE_START_





class audio_producer
{


    protected:
        
        
        unsigned int bytes_played_;





    public:


        //
        // Ctors
        //

        audio_producer ( ) : bytes_played_( 0 ), play_finished ( 0 )
        {  }


        





        
        //
        // Dtor
        //

        virtual ~audio_producer( void )
        {  }




        //
        // Public Functions
        //


        //reads N bytes from the buffer
        virtual unsigned int read( BYTE *, unsigned int ) = 0;

        virtual bool finished ( void ) = 0;




        unsigned int bytes_played( void ) const
        {
            return bytes_played_;
        }


        void set_position( unsigned int pos )
        {
            bytes_played_ = pos;
        }

        void set_position_start( void )
        {
            bytes_played_ = 0 ;
        }



        void forward( unsigned int bytes )
        {
            bytes_played_ += bytes ;
        }


        void backward( unsigned int bytes )
        {
            bytes_played_ += bytes ;
        }

        void ( * play_finished )( void );




};




_AUDIO_NAMESPACE_END_






#endif //ifdef _AUDIOAUDBUF__H_