gtk2_ardour/plugin_eq_gui.h

   1 /*
   2     Copyright (C) 2008 Paul Davis
   3     Author: Sampo Savolainen
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #ifndef __ardour_plugin_eq_gui_h
  22 #define __ardour_plugin_eq_gui_h
  23
  24 #include "ardour/buffer_set.h"
  25 #include "ardour/plugin_insert.h"
  26 #include "ardour/plugin.h"
  27
  28 #include <gtkmm/table.h>
  29 #include <gtkmm/drawingarea.h>
  30 #include <gtkmm/combobox.h>
  31 #include <gtkmm/liststore.h>
  32
  33 class FFT;
  34
  35 class PluginEqGui : public Gtk::Table
  36 {
  37         public:
  38                 PluginEqGui(boost::shared_ptr<ARDOUR::PluginInsert>);
  39                 ~PluginEqGui();
  40
  41
  42
  43         private:
  44                 // Setup
  45                 void set_buffer_size(uint32_t, uint32_t);
  46                 void change_dB_scale();
  47
  48                 // Analysis
  49                 void run_impulse_analysis();
  50                 void signal_collect_callback(ARDOUR::BufferSet *, ARDOUR::BufferSet *);
  51                 float _signal_analysis_running;
  52
  53                 // Drawing
  54                 virtual void on_hide();
  55                 virtual void on_show();
  56
  57                 void stop_updating();
  58                 void start_updating();
  59
  60                 void resize_analysis_area(Gtk::Allocation&);
  61                 void redraw_analysis_area();
  62
  63                 void draw_analysis_scales(cairo_t *);
  64                 bool expose_analysis_area(GdkEventExpose *);
  65
  66                 void draw_scales_power(Gtk::Widget *, cairo_t *);
  67                 void plot_impulse_amplitude(Gtk::Widget *,cairo_t *);
  68
  69                 void draw_scales_phase(Gtk::Widget *,cairo_t *);
  70                 void plot_impulse_phase(Gtk::Widget *,cairo_t *);
  71
  72                 void plot_signal_amplitude_difference(Gtk::Widget *,cairo_t *);
  73
  74                 // Helpers
  75                 bool timeout_callback();
  76                 void redraw_scales();
  77
  78
  79                 // Fields:
  80
  81                 // analysis parameters
  82                 float _samplerate;
  83
  84                 float _min_dB;
  85                 float _max_dB;
  86                 float _step_dB;
  87
  88
  89                 float _log_coeff;
  90                 float _log_max;
  91
  92                 nframes_t _buffer_size;
  93                 nframes_t _signal_buffer_size;
  94
  95                 // buffers
  96                 ARDOUR::BufferSet _bufferset;
  97                 ARDOUR::BufferSet _collect_bufferset;
  98
  99
 100                 // dimensions
 101                 float _analysis_width;
 102                 float _analysis_height;
 103
 104                 // My objects
 105                 FFT *_impulse_fft;
 106                 FFT *_signal_input_fft;
 107                 FFT *_signal_output_fft;
 108                 boost::shared_ptr<ARDOUR::Plugin> _plugin;
 109                 boost::shared_ptr<ARDOUR::PluginInsert> _plugin_insert;
 110
 111                 // gui objects
 112                 Gtk::DrawingArea *_analysis_area;
 113                 cairo_surface_t *_analysis_scale_surface;
 114
 115
 116                 // dB scale selection:
 117                 class dBSelectionColumns : public Gtk::TreeModel::ColumnRecord
 118                 {
 119                   public:
 120                         dBSelectionColumns()
 121                                 { add(dBMin); add(dBMax); add(dBStep); add(name); }
 122
 123                         Gtk::TreeModelColumn<float> dBMin;
 124                         Gtk::TreeModelColumn<float> dBMax;
 125                         Gtk::TreeModelColumn<float> dBStep;
 126                         Gtk::TreeModelColumn<Glib::ustring> name;
 127                 };
 128
 129                 dBSelectionColumns dBColumns;
 130
 131                 Gtk::ComboBox *dBScaleCombo;
 132                 Glib::RefPtr<Gtk::ListStore> dBScaleModel;
 133
 134                 Gtk::CheckButton *_phase_button;
 135
 136                 // signals and connections
 137                 sigc::connection _update_connection;
 138                 sigc::connection _window_unmap_connection;
 139                 sigc::connection _window_map_connection;
 140
 141                 PBD::ScopedConnection analysis_connection;
 142 };
 143
 144 #endif
 145