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 private:
  42         // Setup
  43         void set_buffer_size (uint32_t, uint32_t);
  44         void change_dB_scale ();
  45
  46         // Analysis
  47         void run_impulse_analysis ();
  48         void signal_collect_callback (ARDOUR::BufferSet *, ARDOUR::BufferSet *);
  49         float _signal_analysis_running;
  50
  51         // Drawing
  52         virtual void on_hide ();
  53         virtual void on_show ();
  54
  55         void stop_updating ();
  56         void start_updating ();
  57
  58         void resize_analysis_area (Gtk::Allocation&);
  59         void redraw_analysis_area ();
  60
  61         void draw_analysis_scales (cairo_t *);
  62         bool expose_analysis_area (GdkEventExpose *);
  63
  64         void draw_scales_power (Gtk::Widget *, cairo_t *);
  65         void plot_impulse_amplitude (Gtk::Widget *,cairo_t *);
  66
  67         void draw_scales_phase (Gtk::Widget *,cairo_t *);
  68         void plot_impulse_phase (Gtk::Widget *,cairo_t *);
  69
  70         void plot_signal_amplitude_difference (Gtk::Widget *,cairo_t *);
  71
  72         // Helpers
  73         bool timeout_callback ();
  74         void redraw_scales ();
  75
  76         // Fields:
  77
  78         // analysis parameters
  79         float _samplerate;
  80
  81         float _min_dB;
  82         float _max_dB;
  83         float _step_dB;
  84
  85         float _log_coeff;
  86         float _log_max;
  87
  88         ARDOUR::framecnt_t _buffer_size;
  89         ARDOUR::framecnt_t _signal_buffer_size;
  90
  91         // buffers
  92         ARDOUR::BufferSet _bufferset;
  93         ARDOUR::BufferSet _collect_bufferset;
  94
  95
  96         // dimensions
  97         float _analysis_width;
  98         float _analysis_height;
  99
 100         // My objects
 101         FFT *_impulse_fft;
 102         FFT *_signal_input_fft;
 103         FFT *_signal_output_fft;
 104         boost::shared_ptr<ARDOUR::Plugin> _plugin;
 105         boost::shared_ptr<ARDOUR::PluginInsert> _plugin_insert;
 106
 107         // gui objects
 108         Gtk::DrawingArea *_analysis_area;
 109         cairo_surface_t *_analysis_scale_surface;
 110
 111         // dB scale selection:
 112         class dBSelectionColumns : public Gtk::TreeModel::ColumnRecord
 113         {
 114         public:
 115                 dBSelectionColumns()
 116                 { add(dBMin); add(dBMax); add(dBStep); add(name); }
 117
 118                 Gtk::TreeModelColumn<float> dBMin;
 119                 Gtk::TreeModelColumn<float> dBMax;
 120                 Gtk::TreeModelColumn<float> dBStep;
 121                 Gtk::TreeModelColumn<std::string> name;
 122         };
 123
 124         dBSelectionColumns dBColumns;
 125
 126         Gtk::ComboBox *dBScaleCombo;
 127         Glib::RefPtr<Gtk::ListStore> dBScaleModel;
 128
 129         Gtk::CheckButton *_phase_button;
 130
 131         // signals and connections
 132         sigc::connection _update_connection;
 133         sigc::connection _window_unmap_connection;
 134         sigc::connection _window_map_connection;
 135
 136         PBD::ScopedConnection analysis_connection;
 137 };
 138
 139 #endif
 140