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 namespace GTKArdour {
  34         class FFT;
  35 }
  36
  37 class PluginEqGui : public Gtk::Table
  38 {
  39 public:
  40         PluginEqGui (boost::shared_ptr<ARDOUR::PluginInsert>);
  41         ~PluginEqGui ();
  42
  43         void start_listening ();
  44         void stop_listening ();
  45
  46 private:
  47         // Setup
  48         void set_buffer_size (uint32_t, uint32_t);
  49         void change_dB_scale ();
  50
  51         // Analysis
  52         void run_impulse_analysis ();
  53         void signal_collect_callback (ARDOUR::BufferSet *, ARDOUR::BufferSet *);
  54         float _signal_analysis_running;
  55
  56         // Drawing
  57         virtual void on_hide ();
  58         virtual void on_show ();
  59
  60         void stop_updating ();
  61         void start_updating ();
  62
  63         void resize_analysis_area (Gtk::Allocation&);
  64         void redraw_analysis_area ();
  65
  66         void draw_analysis_scales (cairo_t *);
  67         bool expose_analysis_area (GdkEventExpose *);
  68
  69         void draw_scales_power (Gtk::Widget *, cairo_t *);
  70         void plot_impulse_amplitude (Gtk::Widget *,cairo_t *);
  71
  72         void draw_scales_phase (Gtk::Widget *,cairo_t *);
  73         void plot_impulse_phase (Gtk::Widget *,cairo_t *);
  74
  75         void plot_signal_amplitude_difference (Gtk::Widget *,cairo_t *);
  76
  77         // Helpers
  78         bool timeout_callback ();
  79         void redraw_scales ();
  80
  81         // Fields:
  82
  83         // analysis parameters
  84         float _samplerate;
  85
  86         float _min_dB;
  87         float _max_dB;
  88         float _step_dB;
  89
  90         float _log_coeff;
  91         float _log_max;
  92
  93         ARDOUR::framecnt_t _buffer_size;
  94         ARDOUR::framecnt_t _signal_buffer_size;
  95
  96         // buffers
  97         ARDOUR::BufferSet _bufferset;
  98         ARDOUR::BufferSet _collect_bufferset;
  99
 100
 101         // dimensions
 102         float _analysis_width;
 103         float _analysis_height;
 104
 105         // My objects
 106         GTKArdour::FFT *_impulse_fft;
 107         GTKArdour::FFT *_signal_input_fft;
 108         GTKArdour::FFT *_signal_output_fft;
 109         boost::shared_ptr<ARDOUR::Plugin> _plugin;
 110         boost::shared_ptr<ARDOUR::PluginInsert> _plugin_insert;
 111
 112         // gui objects
 113         Gtk::DrawingArea *_analysis_area;
 114         cairo_surface_t *_analysis_scale_surface;
 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<std::string> 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