DLine.h

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//
// DLine.h -- an Interpolating Delay Line
//  See the copyright notice and acknowledgment of authors in the file COPYRIGHT
//
// This is a typical circular buffer with one writer and multiple readers (tap instances)

#ifndef INCLUDE_DLine_H
#define INCLUDE_DLine_H

#include "CSL_Core.h"

namespace csl {

typedef enum {
    kTruncate,
    kLinear,
    kAllPass
} InterpType;

class DLine : public FrameStream, public Processor {

private:    
    Buffer ring_buffer;

    float max_delay_time;
    float delay_time;
    float target_delay_time;
    unsigned max_delay_in_frames;
    InterpType interp_type;
    unsigned start_frame;
//  unsigned end_frame;
    unsigned write_frame;

public:
    DLine( FrameStream &input, float max_delay );
    ~DLine();

    bool set_target_delay_time( float tdt );
    bool init_delay_time( float dt );
    bool set_interp_type( InterpType );
//  update_write_frame( unsigned how_many_frames);

    status mono_next_buffer(Buffer & inputBuffer, Buffer & outputBuffer, unsigned inBufNum, unsigned outBufNum);
    status next_buffer(Buffer & inputBuffer, Buffer & outputBuffer);
    
};

}

#endif

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