plugin_eq_gui.h

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/*
 * Copyright (C) 2008-2009 Sampo Savolainen <v2@iki.fi>
 * Copyright (C) 2009-2012 David Robillard <d@drobilla.net>
 * Copyright (C) 2009-2017 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2010 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2018-2019 Robin Gareus <robin@gareus.org>
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef __ardour_plugin_eq_gui_h
#define __ardour_plugin_eq_gui_h
 
#include "pbd/signals.h"
 
#include "ardour/buffer_set.h"
 
#include <gtkmm/table.h>
#include <gtkmm/drawingarea.h>
#include <gtkmm/combobox.h>
#include <gtkmm/comboboxtext.h>
#include <gtkmm/liststore.h>
 
namespace ARDOUR {
        class Plugin;
        class PluginInsert;
}
 
namespace GTKArdour {
        class FFT;
}
 
class PluginEqGui : public Gtk::Table
{
public:
        PluginEqGui (std::shared_ptr<ARDOUR::PluginInsert>);
        ~PluginEqGui ();
 
private:
        // Setup
        void set_buffer_size (uint32_t, uint32_t);
        void change_dB_scale ();
 
        // Analysis
        void run_impulse_analysis ();
        void signal_collect_callback (ARDOUR::BufferSet *, ARDOUR::BufferSet *);
        float _signal_analysis_running;
 
        // Drawing
        virtual void on_hide ();
        virtual void on_show ();
 
        void stop_updating ();
        void start_updating ();
 
        void start_listening ();
        void stop_listening ();
 
        void resize_analysis_area (Gtk::Allocation&);
        void redraw_analysis_area ();
 
        void draw_analysis_scales (cairo_t *);
        bool expose_analysis_area (GdkEventExpose *);
 
        void draw_scales_power (Gtk::Widget *, cairo_t *);
        void plot_impulse_amplitude (Gtk::Widget *,cairo_t *);
 
        void draw_scales_phase (Gtk::Widget *,cairo_t *);
        void plot_impulse_phase (Gtk::Widget *,cairo_t *);
 
        void plot_signal_amplitude_difference (Gtk::Widget *,cairo_t *);
 
        void update_pointer_info(float);
        bool analysis_area_mouseover(GdkEventMotion *);
        bool analysis_area_mouseexit(GdkEventCrossing *);
 
        // Helpers
        bool timeout_callback ();
        void redraw_scales ();
 
        // Fields:
 
        // analysis parameters
        float _samplerate;
 
        float _min_dB;
        float _max_dB;
        float _step_dB;
 
        float _log_coeff;
        float _log_max;
 
        ARDOUR::samplecnt_t _block_size;
        ARDOUR::samplecnt_t _buffer_size;
        ARDOUR::samplecnt_t _signal_buffer_size;
 
        // buffers
        ARDOUR::BufferSet _bufferset;
        ARDOUR::BufferSet _collect_bufferset;
 
        // dimensions
        float _analysis_width;
        float _analysis_height;
 
        // My objects
        GTKArdour::FFT *_impulse_fft;
        GTKArdour::FFT *_signal_input_fft;
        GTKArdour::FFT *_signal_output_fft;
        std::shared_ptr<ARDOUR::Plugin> _plugin;
        std::shared_ptr<ARDOUR::PluginInsert> _plugin_insert;
 
        // gui objects
        Gtk::DrawingArea *_analysis_area;
        cairo_surface_t *_analysis_scale_surface;
        Gtk::Label *_pointer_info;
        int _pointer_in_area_xpos;
        int _pointer_in_area_freq;
 
        // dB scale selection:
        class dBSelectionColumns : public Gtk::TreeModel::ColumnRecord
        {
        public:
                dBSelectionColumns()
                { add(dBMin); add(dBMax); add(dBStep); add(name); }
 
                Gtk::TreeModelColumn<float> dBMin;
                Gtk::TreeModelColumn<float> dBMax;
                Gtk::TreeModelColumn<float> dBStep;
                Gtk::TreeModelColumn<std::string> name;
        };
 
        dBSelectionColumns dBColumns;
 
        Gtk::ComboBox *dBScaleCombo;
        Glib::RefPtr<Gtk::ListStore> dBScaleModel;
 
        Gtk::ComboBoxText* _live_signal_combo;
 
        Gtk::CheckButton *_phase_button;
 
        // signals and connections
        sigc::connection _update_connection;
        sigc::connection _window_unmap_connection;
        sigc::connection _window_map_connection;
 
        PBD::ScopedConnection analysis_connection;
};
 
#endif