/* -*- c++ -*- */
/*
 * Copyright 2008,2009,2011,2012,2014,2018 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * GNU Radio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef INCLUDED_QTGUI_SINK_C_IMPL_H
#define INCLUDED_QTGUI_SINK_C_IMPL_H

#include <gnuradio/qtgui/sink_c.h>

#include <gnuradio/fft/fft.h>
#include <gnuradio/filter/firdes.h>
#include <gnuradio/high_res_timer.h>
#include <gnuradio/qtgui/SpectrumGUIClass.h>

namespace gr {
namespace qtgui {

class QTGUI_API sink_c_impl : public sink_c
{
private:
    void forecast(int noutput_items, gr_vector_int& ninput_items_required);

    void initialize();

    int d_fftsize;
    filter::firdes::win_type d_wintype;
    std::vector<float> d_window;
    double d_center_freq;
    double d_bandwidth;
    std::string d_name;
    gr::high_res_timer_type d_last_update;
    bool d_update_active;

    const pmt::pmt_t d_port;

    bool d_shift;
    fft::fft_complex* d_fft;

    int d_index;
    gr_complex* d_residbuf;
    float* d_magbuf;

    bool d_plotfreq, d_plotwaterfall, d_plottime, d_plotconst;

    gr::high_res_timer_type d_update_time;

    int d_argc;
    char* d_argv;
    QWidget* d_parent;
    SpectrumGUIClass* d_main_gui;

    void windowreset();
    void buildwindow();
    void fftresize();
    void check_clicked();
    void fft(float* data_out, const gr_complex* data_in, int size);

    // Handles message input port for setting new center frequency.
    // The message is a PMT pair (intern('freq'), double(frequency)).
    void handle_set_freq(pmt::pmt_t msg);

public:
    sink_c_impl(int fftsize,
                int wintype,
                double fc,
                double bw,
                const std::string& name,
                bool plotfreq,
                bool plotwaterfall,
                bool plottime,
                bool plotconst,
                QWidget* parent);
    ~sink_c_impl();

    bool check_topology(int ninputs, int noutputs);

    void exec_();
    QWidget* qwidget();

#ifdef ENABLE_PYTHON
    PyObject* pyqwidget();
#else
    void* pyqwidget();
#endif

    void set_fft_size(const int fftsize);
    int fft_size() const;

    void set_frequency_range(const double centerfreq, const double bandwidth);
    void set_fft_power_db(double min, double max);
    void enable_rf_freq(bool en);

    // void set_time_domain_axis(double min, double max);
    // void set_constellation_axis(double xmin, double xmax,
    //                            double ymin, double ymax);
    // void set_constellation_pen_size(int size);

    void set_update_time(double t);

    int general_work(int noutput_items,
                     gr_vector_int& ninput_items,
                     gr_vector_const_void_star& input_items,
                     gr_vector_void_star& output_items);
};

} /* namespace qtgui */
} /* namespace gr */

#endif /* INCLUDED_QTGUI_SINK_C_IMPL_H */
