AsyncAudioFifo.h

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#ifndef ASYNC_AUDIO_FIFO_INCLUDED
#define ASYNC_AUDIO_FIFO_INCLUDED
 
 
/****************************************************************************
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 * System Includes
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/****************************************************************************
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 * Project Includes
 *
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#include <AsyncAudioSink.h>
#include <AsyncAudioSource.h>
 
 
/****************************************************************************
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 * Local Includes
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/****************************************************************************
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 * Forward declarations
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/****************************************************************************
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 * Namespace
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namespace Async
{
 
 
/****************************************************************************
 *
 * Forward declarations of classes inside of the declared namespace
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/****************************************************************************
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 * Defines & typedefs
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/****************************************************************************
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 * Exported Global Variables
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/****************************************************************************
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 * Class definitions
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class AudioFifo : public AudioSink, public AudioSource
{
  public:
    explicit AudioFifo(unsigned fifo_size);
  
    virtual ~AudioFifo(void);
  
    void setSize(unsigned new_size);
    
    bool empty(void) const { return !is_full && (tail == head); }
    
    bool full(void) const { return is_full; }
    
    unsigned samplesInFifo(bool ignore_prebuf=false) const;
    
    void setOverwrite(bool overwrite) { do_overwrite = overwrite; }
    
    bool overwrite(void) const { return do_overwrite; }
    
    void clear(void);
 
    void setPrebufSamples(unsigned prebuf_samples);
    
    void enableBuffering(bool enable);
    
    bool bufferingEnabled(void) const { return buffering_enabled; }
    
    virtual int writeSamples(const float *samples, int count);
    
    virtual void flushSamples(void);
    
    virtual void resumeOutput(void);
    
    
  protected:
    virtual void allSamplesFlushed(void);
    
    
  private:    
    float       *fifo;
    unsigned    fifo_size;
    unsigned    head, tail;
    bool        do_overwrite;
    bool        output_stopped;
    unsigned    prebuf_samples;
    bool        prebuf;
    bool        is_flushing;
    bool        is_full;
    bool        buffering_enabled;
    bool        disable_buffering_when_flushed;
    bool        is_idle;
    bool        input_stopped;
    
    void writeSamplesFromFifo(void);
 
};  /* class AudioFifo */
 
 
} /* namespace */
 
#endif /* ASYNC_AUDIO_FIFO_INCLUDED */
 
 
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