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#ifndef STK_WVIN_H
#define STK_WVIN_H
#include "Stk.h"
namespace stk {
/***************************************************/
/*! \class WvIn
\brief STK audio input abstract base class.
This class provides common functionality for a variety of audio
data input subclasses.
by Perry R. Cook and Gary P. Scavone, 1995--2021.
*/
/***************************************************/
class WvIn : public Stk
{
public:
//! Return the number of audio channels in the data or stream.
unsigned int channelsOut( void ) const { return data_.channels(); };
//! Return an StkFrames reference to the last computed sample frame.
/*!
If no file data is loaded, an empty container is returned.
*/
const StkFrames& lastFrame( void ) const { return lastFrame_; };
//! Compute one sample frame and return the specified \c channel value.
virtual StkFloat tick( unsigned int channel = 0 ) = 0;
//! Fill the StkFrames object with computed sample frames, starting at the specified channel and return the same reference.
virtual StkFrames& tick( StkFrames& frames, unsigned int channel = 0 ) = 0;
protected:
StkFrames data_;
StkFrames lastFrame_;
};
} // stk namespace
#endif
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