soda_wfall_data.hpp

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/*
Copyright (c) 2017 Matthew H. Reilly (kb1vc)
All rights reserved.

Redistribution and use in source and binary forms, with or without
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    Redistributions in binary form must reproduce the above copyright
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    the documentation and/or other materials provided with the
    distribution.

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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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*/

#ifndef SODA_WFALL_DATA_H
#define SODA_WFALL_DATA_H

#include <QWidget>
#include <qwt/qwt_plot.h>
#include <qwt/qwt_raster_data.h>

namespace GUISoDa {
  class WFallData : public QwtRasterData
  {
  public:
    WFallData();

    ~WFallData();
  
    virtual double value(double f, double t) const; 

    void setZRange();

    void setDynamicRange(double drange);

    void setRefLevel(double reflvl);
  
    virtual void updateData(double cfreq, float * spect);

    void setSpectrumDimensions(double cfreq, double span, long buckets);

    void setMarkers(double lo, double hi) { 
      f_lo_marker =  lo; 
      f_hi_marker = hi; 
    }
  
  private:
    void setReady() { is_ready = true; }
    void clearReady() { is_ready = false; }
    bool is_ready;

    double r_fbucket_size;  
    double span_in_freq; // the frequency limits/span for the input stream

    double f_lo_marker, f_hi_marker;
    mutable double last_freq;  // last frequency seen by the value function

    double min_time; 

    // The heatmap contains spectral power buckets for each "scan" at a frequency "f"
    // such that
    // heatmap[i * num_buckets] is the start of the scan for a sample between
    // start_freq[i] and start_freq[i] + span_in_freq
    double *heatmap;
    long heatmap_size; 
    double *start_freq;  
    long num_buckets, num_rows; 
    long cur_row_idx; 
    long cur_freq_idx; 

    mutable long last_cidx; 

    double ref_level; 
    double dynamic_range; 
  };
}

#endif