852 lines
22 KiB
C++
852 lines
22 KiB
C++
/*
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Copyright (C) 2008 Paul Davis
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Author: Sampo Savolainen
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <algorithm>
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#include <math.h>
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#include <iomanip>
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#include <iostream>
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#include <sstream>
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#ifdef COMPILER_MSVC
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#include <float.h>
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/* isinf() & isnan() are C99 standards, which older MSVC doesn't provide */
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#define ISINF(val) !((bool)_finite((double)val))
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#define ISNAN(val) (bool)_isnan((double)val)
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#else
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#define ISINF(val) std::isinf((val))
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#define ISNAN(val) std::isnan((val))
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#endif
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#include <gtkmm/box.h>
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#include <gtkmm/button.h>
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#include <gtkmm/checkbutton.h>
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#include "ardour/audio_buffer.h"
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#include "ardour/data_type.h"
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#include "ardour/chan_mapping.h"
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#include "ardour/plugin_insert.h"
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#include "ardour/session.h"
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#include "plugin_eq_gui.h"
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#include "fft.h"
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#include "ardour_ui.h"
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#include "gui_thread.h"
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#include "pbd/i18n.h"
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using namespace ARDOUR;
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PluginEqGui::PluginEqGui(boost::shared_ptr<ARDOUR::PluginInsert> pluginInsert)
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: _min_dB(-12.0)
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, _max_dB(+12.0)
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, _step_dB(3.0)
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, _buffer_size(0)
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, _signal_buffer_size(0)
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, _impulse_fft(0)
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, _signal_input_fft(0)
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, _signal_output_fft(0)
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, _plugin_insert(pluginInsert)
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{
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_signal_analysis_running = false;
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_samplerate = ARDOUR_UI::instance()->the_session()->frame_rate();
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_log_coeff = (1.0 - 2.0 * (1000.0/(_samplerate/2.0))) / powf(1000.0/(_samplerate/2.0), 2.0);
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_log_max = log10f(1 + _log_coeff);
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// Setup analysis drawing area
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_analysis_scale_surface = 0;
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_analysis_area = new Gtk::DrawingArea();
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_analysis_width = 256.0;
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_analysis_height = 256.0;
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_analysis_area->set_size_request(_analysis_width, _analysis_height);
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_analysis_area->add_events(Gdk::POINTER_MOTION_MASK | Gdk::LEAVE_NOTIFY_MASK | Gdk::BUTTON_PRESS_MASK);
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_analysis_area->signal_expose_event().connect( sigc::mem_fun (*this, &PluginEqGui::expose_analysis_area));
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_analysis_area->signal_size_allocate().connect( sigc::mem_fun (*this, &PluginEqGui::resize_analysis_area));
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_analysis_area->signal_motion_notify_event().connect( sigc::mem_fun (*this, &PluginEqGui::analysis_area_mouseover));
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_analysis_area->signal_leave_notify_event().connect( sigc::mem_fun (*this, &PluginEqGui::analysis_area_mouseexit));
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_analysis_area->signal_button_press_event().connect( sigc::mem_fun (*this, &PluginEqGui::analysis_area_mousedown));
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// dB selection
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dBScaleModel = Gtk::ListStore::create(dBColumns);
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dBScaleCombo = new Gtk::ComboBox (dBScaleModel, false);
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dBScaleCombo->set_title (_("dB scale"));
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#define ADD_DB_ROW(MIN,MAX,STEP,NAME) \
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{ \
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Gtk::TreeModel::Row row = *(dBScaleModel->append()); \
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row[dBColumns.dBMin] = (MIN); \
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row[dBColumns.dBMax] = (MAX); \
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row[dBColumns.dBStep] = (STEP); \
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row[dBColumns.name] = NAME; \
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}
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ADD_DB_ROW( -6, +6, 1, "-6dB .. +6dB");
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ADD_DB_ROW(-12, +12, 3, "-12dB .. +12dB");
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ADD_DB_ROW(-24, +24, 5, "-24dB .. +24dB");
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ADD_DB_ROW(-36, +36, 6, "-36dB .. +36dB");
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ADD_DB_ROW(-64, +64,12, "-64dB .. +64dB");
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#undef ADD_DB_ROW
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dBScaleCombo -> pack_start(dBColumns.name);
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dBScaleCombo -> set_active(1);
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dBScaleCombo -> signal_changed().connect( sigc::mem_fun(*this, &PluginEqGui::change_dB_scale) );
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Gtk::Label *dBComboLabel = new Gtk::Label (_("dB scale"));
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Gtk::HBox *dBSelectBin = new Gtk::HBox(false, 5);
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dBSelectBin->add( *manage(dBComboLabel));
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dBSelectBin->add( *manage(dBScaleCombo));
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// Phase checkbutton
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_phase_button = new Gtk::CheckButton (_("Show phase"));
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_phase_button->set_active(true);
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_phase_button->signal_toggled().connect( sigc::mem_fun(*this, &PluginEqGui::redraw_scales));
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// Freq/dB info for mouse over
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_pointer_info = new Gtk::Label ("", 1, 0.5);
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_pointer_info->set_size_request(_analysis_width / 4, -1);
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_pointer_info->set_name("PluginAnalysisInfoLabel");
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// populate table
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attach( *manage(_analysis_area), 1, 4, 1, 2);
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attach( *manage(dBSelectBin), 1, 2, 2, 3, Gtk::SHRINK, Gtk::SHRINK);
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attach( *manage(_phase_button), 2, 3, 2, 3, Gtk::SHRINK, Gtk::SHRINK);
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attach( *manage(_pointer_info), 3, 4, 2, 3, Gtk::FILL, Gtk::SHRINK);
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}
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PluginEqGui::~PluginEqGui()
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{
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stop_listening ();
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if (_analysis_scale_surface) {
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cairo_surface_destroy (_analysis_scale_surface);
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}
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delete _impulse_fft;
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_impulse_fft = 0;
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delete _signal_input_fft;
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_signal_input_fft = 0;
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delete _signal_output_fft;
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_signal_output_fft = 0;
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// all gui objects are *manage'd by the inherited Table object
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}
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void
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PluginEqGui::start_listening ()
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{
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if (!_plugin) {
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_plugin = _plugin_insert->get_impulse_analysis_plugin();
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}
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_plugin->activate();
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set_buffer_size(4096, 16384);
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// Connect the realtime signal collection callback
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_plugin_insert->AnalysisDataGathered.connect (analysis_connection, invalidator (*this), boost::bind (&PluginEqGui::signal_collect_callback, this, _1, _2), gui_context());
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}
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void
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PluginEqGui::stop_listening ()
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{
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analysis_connection.disconnect ();
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_plugin->deactivate ();
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}
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void
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PluginEqGui::on_hide()
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{
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stop_updating();
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Gtk::Table::on_hide();
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}
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void
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PluginEqGui::stop_updating()
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{
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if (_update_connection.connected()) {
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_update_connection.disconnect();
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}
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}
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void
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PluginEqGui::start_updating()
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{
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if (!_update_connection.connected() && is_visible()) {
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_update_connection = Glib::signal_timeout().connect( sigc::mem_fun(this, &PluginEqGui::timeout_callback), 250);
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}
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}
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void
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PluginEqGui::on_show()
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{
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Gtk::Table::on_show();
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start_updating();
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Gtk::Widget *toplevel = get_toplevel();
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if (toplevel) {
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if (!_window_unmap_connection.connected()) {
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_window_unmap_connection = toplevel->signal_unmap().connect( sigc::mem_fun(this, &PluginEqGui::stop_updating));
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}
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if (!_window_map_connection.connected()) {
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_window_map_connection = toplevel->signal_map().connect( sigc::mem_fun(this, &PluginEqGui::start_updating));
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}
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}
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}
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void
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PluginEqGui::change_dB_scale()
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{
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Gtk::TreeModel::iterator iter = dBScaleCombo -> get_active();
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Gtk::TreeModel::Row row;
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if(iter && (row = *iter)) {
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_min_dB = row[dBColumns.dBMin];
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_max_dB = row[dBColumns.dBMax];
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_step_dB = row[dBColumns.dBStep];
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redraw_scales();
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}
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}
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void
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PluginEqGui::redraw_scales()
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{
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if (_analysis_scale_surface) {
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cairo_surface_destroy (_analysis_scale_surface);
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_analysis_scale_surface = 0;
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}
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_analysis_area->queue_draw();
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// TODO: Add graph legend!
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}
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void
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PluginEqGui::set_buffer_size(uint32_t size, uint32_t signal_size)
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{
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if (_buffer_size == size && _signal_buffer_size == signal_size) {
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return;
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}
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GTKArdour::FFT *tmp1 = _impulse_fft;
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GTKArdour::FFT *tmp2 = _signal_input_fft;
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GTKArdour::FFT *tmp3 = _signal_output_fft;
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try {
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_impulse_fft = new GTKArdour::FFT(size);
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_signal_input_fft = new GTKArdour::FFT(signal_size);
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_signal_output_fft = new GTKArdour::FFT(signal_size);
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} catch( ... ) {
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// Don't care about lost memory, we're screwed anyhow
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_impulse_fft = tmp1;
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_signal_input_fft = tmp2;
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_signal_output_fft = tmp3;
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throw;
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}
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delete tmp1;
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delete tmp2;
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delete tmp3;
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_buffer_size = size;
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_signal_buffer_size = signal_size;
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// allocate separate in+out buffers, VST cannot process in-place
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ARDOUR::ChanCount acount (_plugin->get_info()->n_inputs + _plugin->get_info()->n_outputs);
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ARDOUR::ChanCount ccount = ARDOUR::ChanCount::max (_plugin->get_info()->n_inputs, _plugin->get_info()->n_outputs);
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for (ARDOUR::DataType::iterator i = ARDOUR::DataType::begin(); i != ARDOUR::DataType::end(); ++i) {
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_bufferset.ensure_buffers (*i, acount.get (*i), _buffer_size);
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_collect_bufferset.ensure_buffers (*i, ccount.get (*i), _buffer_size);
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}
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_bufferset.set_count (acount);
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_collect_bufferset.set_count (ccount);
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}
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void
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PluginEqGui::resize_analysis_area (Gtk::Allocation& size)
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{
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_analysis_width = (float)size.get_width();
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_analysis_height = (float)size.get_height();
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if (_analysis_scale_surface) {
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cairo_surface_destroy (_analysis_scale_surface);
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_analysis_scale_surface = 0;
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}
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_pointer_info->set_size_request(_analysis_width / 4, -1);
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}
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bool
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PluginEqGui::timeout_callback()
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{
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if (!_signal_analysis_running) {
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_signal_analysis_running = true;
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_plugin_insert -> collect_signal_for_analysis(_signal_buffer_size);
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}
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run_impulse_analysis();
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return true;
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}
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void
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PluginEqGui::signal_collect_callback(ARDOUR::BufferSet *in, ARDOUR::BufferSet *out)
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{
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ENSURE_GUI_THREAD (*this, &PluginEqGui::signal_collect_callback, in, out);
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_signal_input_fft ->reset();
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_signal_output_fft->reset();
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for (uint32_t i = 0; i < _plugin_insert->input_streams().n_audio(); ++i) {
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_signal_input_fft ->analyze(in ->get_audio(i).data(), GTKArdour::FFT::HANN);
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}
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for (uint32_t i = 0; i < _plugin_insert->output_streams().n_audio(); ++i) {
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_signal_output_fft->analyze(out->get_audio(i).data(), GTKArdour::FFT::HANN);
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}
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_signal_input_fft ->calculate();
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_signal_output_fft->calculate();
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_signal_analysis_running = false;
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// This signals calls expose_analysis_area()
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_analysis_area->queue_draw();
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}
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void
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PluginEqGui::run_impulse_analysis()
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{
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/* Allocate some thread-local buffers so that Plugin::connect_and_run can use them */
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ARDOUR_UI::instance()->get_process_buffers ();
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uint32_t inputs = _plugin->get_info()->n_inputs.n_audio();
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uint32_t outputs = _plugin->get_info()->n_outputs.n_audio();
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// Create the impulse, can't use silence() because consecutive calls won't work
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for (uint32_t i = 0; i < inputs; ++i) {
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ARDOUR::AudioBuffer& buf = _bufferset.get_audio(i);
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ARDOUR::Sample* d = buf.data();
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memset(d, 0, sizeof(ARDOUR::Sample)*_buffer_size);
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*d = 1.0;
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}
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ARDOUR::ChanMapping in_map(_plugin->get_info()->n_inputs);
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ARDOUR::ChanMapping out_map(_plugin->get_info()->n_outputs);
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// map output buffers after input buffers (no inplace for VST)
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out_map.offset_to (DataType::AUDIO, inputs);
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_plugin->set_block_size (_buffer_size);
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_plugin->connect_and_run(_bufferset, 0, _buffer_size, 1.0, in_map, out_map, _buffer_size, 0);
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framecnt_t f = _plugin->signal_latency ();
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// Adding user_latency() could be interesting
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// Gather all output, taking latency into account.
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_impulse_fft->reset();
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// Silence collect buffers to copy data to, can't use silence() because consecutive calls won't work
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for (uint32_t i = 0; i < outputs; ++i) {
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ARDOUR::AudioBuffer &buf = _collect_bufferset.get_audio(i);
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ARDOUR::Sample *d = buf.data();
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memset(d, 0, sizeof(ARDOUR::Sample)*_buffer_size);
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}
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if (f == 0) {
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//std::cerr << "0: no latency, copying full buffer, trivial.." << std::endl;
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for (uint32_t i = 0; i < outputs; ++i) {
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memcpy(_collect_bufferset.get_audio(i).data(),
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_bufferset.get_audio(inputs + i).data(), _buffer_size * sizeof(float));
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}
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} else {
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//int C = 0;
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//std::cerr << (++C) << ": latency is " << f << " frames, doing split processing.." << std::endl;
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framecnt_t target_offset = 0;
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framecnt_t frames_left = _buffer_size; // refaktoroi
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do {
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if (f >= _buffer_size) {
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//std::cerr << (++C) << ": f (=" << f << ") is larger than buffer_size, still trying to reach the actual output" << std::endl;
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// there is no data in this buffer regarding to the input!
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f -= _buffer_size;
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} else {
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// this buffer contains either the first, last or a whole bu the output of the impulse
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// first part: offset is 0, so we copy to the start of _collect_bufferset
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// we start at output offset "f"
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// .. and copy "buffer size" - "f" - "offset" frames
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framecnt_t length = _buffer_size - f - target_offset;
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//std::cerr << (++C) << ": copying " << length << " frames to _collect_bufferset.get_audio(i)+" << target_offset << " from bufferset at offset " << f << std::endl;
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for (uint32_t i = 0; i < outputs; ++i) {
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memcpy(_collect_bufferset.get_audio(i).data(target_offset),
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_bufferset.get_audio(inputs + i).data() + f,
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length * sizeof(float));
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}
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target_offset += length;
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frames_left -= length;
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f = 0;
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}
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if (frames_left > 0) {
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// Silence the buffers
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for (uint32_t i = 0; i < inputs; ++i) {
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ARDOUR::AudioBuffer &buf = _bufferset.get_audio(i);
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ARDOUR::Sample *d = buf.data();
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memset(d, 0, sizeof(ARDOUR::Sample)*_buffer_size);
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}
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_plugin->connect_and_run (_bufferset, target_offset, target_offset + _buffer_size, 1.0, in_map, out_map, _buffer_size, 0);
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}
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} while ( frames_left > 0);
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}
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for (uint32_t i = 0; i < outputs; ++i) {
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_impulse_fft->analyze(_collect_bufferset.get_audio(i).data());
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}
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// normalize the output
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_impulse_fft->calculate();
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// This signals calls expose_analysis_area()
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_analysis_area->queue_draw();
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ARDOUR_UI::instance()->drop_process_buffers ();
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}
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void
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PluginEqGui::update_pointer_info(float x, float y)
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{
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const int freq = std::max(1, (int) roundf((powf(10, x / _analysis_width * _log_max) - 1) * _samplerate / 2.0 / _log_coeff));
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const float dB = _max_dB - y / _analysis_height * ( _max_dB - _min_dB );
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std::stringstream ss;
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ss << std::fixed;
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if (freq >= 10000) {
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ss << std::setprecision (1) << freq / 1000.0 << "kHz";
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} else if (freq >= 1000) {
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ss << std::setprecision (2) << freq / 1000.0 << "kHz";
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} else {
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ss << std::setprecision (0) << freq << "Hz";
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}
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ss << " " << std::setw(5) << std::setprecision (1) << std::showpos << dB;
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ss << std::setw(0) << "dB";
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_pointer_info->set_text(ss.str());
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}
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bool
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PluginEqGui::analysis_area_mouseover(GdkEventMotion *event)
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{
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update_pointer_info(event->x, event->y);
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return true;
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}
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bool
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PluginEqGui::analysis_area_mouseexit(GdkEventCrossing *)
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{
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_pointer_info->set_text("");
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return true;
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}
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bool
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PluginEqGui::analysis_area_mousedown(GdkEventButton *event)
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{
|
|
update_pointer_info(event->x, event->y);
|
|
return true;
|
|
}
|
|
|
|
|
|
bool
|
|
PluginEqGui::expose_analysis_area(GdkEventExpose *)
|
|
{
|
|
redraw_analysis_area();
|
|
return true;
|
|
}
|
|
|
|
void
|
|
PluginEqGui::draw_analysis_scales(cairo_t *ref_cr)
|
|
{
|
|
// TODO: check whether we need rounding
|
|
_analysis_scale_surface = cairo_surface_create_similar (cairo_get_target(ref_cr),
|
|
CAIRO_CONTENT_COLOR,
|
|
_analysis_width,
|
|
_analysis_height);
|
|
|
|
cairo_t *cr = cairo_create (_analysis_scale_surface);
|
|
|
|
cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
|
|
cairo_rectangle(cr, 0.0, 0.0, _analysis_width, _analysis_height);
|
|
cairo_fill(cr);
|
|
|
|
|
|
draw_scales_power(_analysis_area, cr);
|
|
if (_phase_button->get_active()) {
|
|
draw_scales_phase(_analysis_area, cr);
|
|
}
|
|
|
|
cairo_destroy(cr);
|
|
}
|
|
|
|
void
|
|
PluginEqGui::redraw_analysis_area()
|
|
{
|
|
cairo_t *cr;
|
|
|
|
cr = gdk_cairo_create(GDK_DRAWABLE(_analysis_area->get_window()->gobj()));
|
|
|
|
if (_analysis_scale_surface == 0) {
|
|
draw_analysis_scales(cr);
|
|
}
|
|
|
|
cairo_copy_page(cr);
|
|
|
|
cairo_set_source_surface(cr, _analysis_scale_surface, 0.0, 0.0);
|
|
cairo_paint(cr);
|
|
|
|
if (_phase_button->get_active()) {
|
|
plot_impulse_phase(_analysis_area, cr);
|
|
}
|
|
plot_impulse_amplitude(_analysis_area, cr);
|
|
|
|
// TODO: make this optional
|
|
plot_signal_amplitude_difference(_analysis_area, cr);
|
|
|
|
cairo_destroy(cr);
|
|
}
|
|
|
|
#define PHASE_PROPORTION 0.5
|
|
|
|
void
|
|
PluginEqGui::draw_scales_phase(Gtk::Widget */*w*/, cairo_t *cr)
|
|
{
|
|
float y;
|
|
cairo_font_extents_t extents;
|
|
cairo_font_extents(cr, &extents);
|
|
|
|
char buf[256];
|
|
cairo_text_extents_t t_ext;
|
|
|
|
for (uint32_t i = 0; i < 3; i++) {
|
|
|
|
y = _analysis_height/2.0 - (float)i*(_analysis_height/8.0)*PHASE_PROPORTION;
|
|
|
|
cairo_set_source_rgb(cr, .8, .9, 0.2);
|
|
if (i == 0) {
|
|
snprintf(buf,256, "0\u00b0");
|
|
} else {
|
|
snprintf(buf,256, "%d\u00b0", (i * 45));
|
|
}
|
|
cairo_text_extents(cr, buf, &t_ext);
|
|
cairo_move_to(cr, _analysis_width - t_ext.width - t_ext.x_bearing - 2.0, y - extents.descent);
|
|
cairo_show_text(cr, buf);
|
|
|
|
if (i == 0)
|
|
continue;
|
|
|
|
|
|
cairo_set_source_rgba(cr, .8, .9, 0.2, 0.6/(float)i);
|
|
cairo_move_to(cr, 0.0, y);
|
|
cairo_line_to(cr, _analysis_width, y);
|
|
|
|
|
|
y = _analysis_height/2.0 + (float)i*(_analysis_height/8.0)*PHASE_PROPORTION;
|
|
|
|
// label
|
|
snprintf(buf,256, "-%d\u00b0", (i * 45));
|
|
cairo_set_source_rgb(cr, .8, .9, 0.2);
|
|
cairo_text_extents(cr, buf, &t_ext);
|
|
cairo_move_to(cr, _analysis_width - t_ext.width - t_ext.x_bearing - 2.0, y - extents.descent);
|
|
cairo_show_text(cr, buf);
|
|
|
|
// line
|
|
cairo_set_source_rgba(cr, .8, .9, 0.2, 0.6/(float)i);
|
|
cairo_move_to(cr, 0.0, y);
|
|
cairo_line_to(cr, _analysis_width, y);
|
|
|
|
cairo_set_line_width (cr, 0.25 + 1.0/(float)(i+1));
|
|
cairo_stroke(cr);
|
|
}
|
|
}
|
|
|
|
void
|
|
PluginEqGui::plot_impulse_phase(Gtk::Widget *w, cairo_t *cr)
|
|
{
|
|
float x,y;
|
|
|
|
int prevX = 0;
|
|
float avgY = 0.0;
|
|
int avgNum = 0;
|
|
|
|
// float width = w->get_width();
|
|
float height = w->get_height();
|
|
|
|
cairo_set_source_rgba(cr, 0.95, 0.3, 0.2, 1.0);
|
|
for (uint32_t i = 0; i < _impulse_fft->bins()-1; i++) {
|
|
// x coordinate of bin i
|
|
x = log10f(1.0 + (float)i / (float)_impulse_fft->bins() * _log_coeff) / _log_max;
|
|
x *= _analysis_width;
|
|
|
|
y = _analysis_height/2.0 - (_impulse_fft->phase_at_bin(i)/M_PI)*(_analysis_height/2.0)*PHASE_PROPORTION;
|
|
|
|
if ( i == 0 ) {
|
|
cairo_move_to(cr, x, y);
|
|
|
|
avgY = 0;
|
|
avgNum = 0;
|
|
} else if (rint(x) > prevX || i == _impulse_fft->bins()-1 ) {
|
|
avgY = avgY/(float)avgNum;
|
|
if (avgY > (height * 10.0) ) avgY = height * 10.0;
|
|
if (avgY < (-height * 10.0) ) avgY = -height * 10.0;
|
|
cairo_line_to(cr, prevX, avgY);
|
|
//cairo_line_to(cr, prevX, avgY/(float)avgNum);
|
|
|
|
avgY = 0;
|
|
avgNum = 0;
|
|
|
|
}
|
|
|
|
prevX = rint(x);
|
|
avgY += y;
|
|
avgNum++;
|
|
}
|
|
|
|
cairo_set_line_width (cr, 2.0);
|
|
cairo_stroke(cr);
|
|
}
|
|
|
|
void
|
|
PluginEqGui::draw_scales_power(Gtk::Widget */*w*/, cairo_t *cr)
|
|
{
|
|
if (_impulse_fft == 0) {
|
|
return;
|
|
}
|
|
|
|
static float scales[] = { 30.0, 70.0, 125.0, 250.0, 500.0, 1000.0, 2000.0, 5000.0, 10000.0, 15000.0, 20000.0, -1.0 };
|
|
float divisor = _samplerate / 2.0 / _impulse_fft->bins();
|
|
float x;
|
|
|
|
cairo_set_line_width (cr, 1.5);
|
|
cairo_set_font_size(cr, 9);
|
|
|
|
cairo_font_extents_t extents;
|
|
cairo_font_extents(cr, &extents);
|
|
// float fontXOffset = extents.descent + 1.0;
|
|
|
|
char buf[256];
|
|
|
|
for (uint32_t i = 0; scales[i] != -1.0; ++i) {
|
|
float bin = scales[i] / divisor;
|
|
|
|
x = log10f(1.0 + bin / (float)_impulse_fft->bins() * _log_coeff) / _log_max;
|
|
x *= _analysis_width;
|
|
|
|
if (scales[i] < 1000.0) {
|
|
snprintf(buf, 256, "%0.0f", scales[i]);
|
|
} else {
|
|
snprintf(buf, 256, "%0.0fk", scales[i]/1000.0);
|
|
}
|
|
|
|
cairo_set_source_rgb(cr, 0.4, 0.4, 0.4);
|
|
|
|
//cairo_move_to(cr, x + fontXOffset, 3.0);
|
|
cairo_move_to(cr, x - extents.height, 3.0);
|
|
|
|
cairo_rotate(cr, M_PI / 2.0);
|
|
cairo_show_text(cr, buf);
|
|
cairo_rotate(cr, -M_PI / 2.0);
|
|
cairo_stroke(cr);
|
|
|
|
cairo_set_source_rgb(cr, 0.3, 0.3, 0.3);
|
|
cairo_move_to(cr, x, _analysis_height);
|
|
cairo_line_to(cr, x, 0.0);
|
|
cairo_stroke(cr);
|
|
}
|
|
|
|
float y;
|
|
|
|
//double dashes[] = { 1.0, 3.0, 4.5, 3.0 };
|
|
double dashes[] = { 3.0, 5.0 };
|
|
|
|
for (float dB = 0.0; dB < _max_dB; dB += _step_dB ) {
|
|
snprintf(buf, 256, "+%0.0f", dB );
|
|
|
|
y = ( _max_dB - dB) / ( _max_dB - _min_dB );
|
|
//std::cerr << " y = " << y << std::endl;
|
|
y *= _analysis_height;
|
|
|
|
if (dB != 0.0) {
|
|
cairo_set_source_rgb(cr, 0.4, 0.4, 0.4);
|
|
cairo_move_to(cr, 1.0, y + extents.height + 1.0);
|
|
cairo_show_text(cr, buf);
|
|
cairo_stroke(cr);
|
|
}
|
|
|
|
cairo_set_source_rgb(cr, 0.2, 0.2, 0.2);
|
|
cairo_move_to(cr, 0, y);
|
|
cairo_line_to(cr, _analysis_width, y);
|
|
cairo_stroke(cr);
|
|
|
|
if (dB == 0.0) {
|
|
cairo_set_dash(cr, dashes, 2, 0.0);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
for (float dB = - _step_dB; dB > _min_dB; dB -= _step_dB ) {
|
|
snprintf(buf, 256, "%0.0f", dB );
|
|
|
|
y = ( _max_dB - dB) / ( _max_dB - _min_dB );
|
|
y *= _analysis_height;
|
|
|
|
cairo_set_source_rgb(cr, 0.4, 0.4, 0.4);
|
|
cairo_move_to(cr, 1.0, y - extents.descent - 1.0);
|
|
cairo_show_text(cr, buf);
|
|
cairo_stroke(cr);
|
|
|
|
cairo_set_source_rgb(cr, 0.2, 0.2, 0.2);
|
|
cairo_move_to(cr, 0, y);
|
|
cairo_line_to(cr, _analysis_width, y);
|
|
cairo_stroke(cr);
|
|
}
|
|
|
|
cairo_set_dash(cr, 0, 0, 0.0);
|
|
|
|
}
|
|
|
|
inline float
|
|
power_to_dB(float a)
|
|
{
|
|
return 10.0 * log10f(a);
|
|
}
|
|
|
|
void
|
|
PluginEqGui::plot_impulse_amplitude(Gtk::Widget *w, cairo_t *cr)
|
|
{
|
|
float x,y;
|
|
int prevX = 0;
|
|
float avgY = 0.0;
|
|
int avgNum = 0;
|
|
|
|
// float width = w->get_width();
|
|
float height = w->get_height();
|
|
|
|
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
|
|
cairo_set_line_width (cr, 2.5);
|
|
|
|
for (uint32_t i = 0; i < _impulse_fft->bins()-1; i++) {
|
|
// x coordinate of bin i
|
|
x = log10f(1.0 + (float)i / (float)_impulse_fft->bins() * _log_coeff) / _log_max;
|
|
x *= _analysis_width;
|
|
|
|
float yCoeff = ( power_to_dB(_impulse_fft->power_at_bin(i)) - _min_dB) / (_max_dB - _min_dB);
|
|
|
|
y = _analysis_height - _analysis_height*yCoeff;
|
|
|
|
if ( i == 0 ) {
|
|
cairo_move_to(cr, x, y);
|
|
|
|
avgY = 0;
|
|
avgNum = 0;
|
|
} else if (rint(x) > prevX || i == _impulse_fft->bins()-1 ) {
|
|
avgY = avgY/(float)avgNum;
|
|
if (avgY > (height * 10.0) ) avgY = height * 10.0;
|
|
if (avgY < (-height * 10.0) ) avgY = -height * 10.0;
|
|
cairo_line_to(cr, prevX, avgY);
|
|
//cairo_line_to(cr, prevX, avgY/(float)avgNum);
|
|
|
|
avgY = 0;
|
|
avgNum = 0;
|
|
|
|
}
|
|
|
|
prevX = rint(x);
|
|
avgY += y;
|
|
avgNum++;
|
|
}
|
|
|
|
cairo_stroke(cr);
|
|
}
|
|
|
|
void
|
|
PluginEqGui::plot_signal_amplitude_difference(Gtk::Widget *w, cairo_t *cr)
|
|
{
|
|
float x,y;
|
|
|
|
int prevX = 0;
|
|
float avgY = 0.0;
|
|
int avgNum = 0;
|
|
|
|
// float width = w->get_width();
|
|
float height = w->get_height();
|
|
|
|
cairo_set_source_rgb(cr, 0.0, 1.0, 0.0);
|
|
cairo_set_line_width (cr, 1.5);
|
|
|
|
for (uint32_t i = 0; i < _signal_input_fft->bins()-1; i++) {
|
|
// x coordinate of bin i
|
|
x = log10f(1.0 + (float)i / (float)_signal_input_fft->bins() * _log_coeff) / _log_max;
|
|
x *= _analysis_width;
|
|
|
|
float power_out = _signal_output_fft->power_at_bin (i) + 1e-30;
|
|
float power_in = _signal_input_fft ->power_at_bin (i) + 1e-30;
|
|
float power = power_to_dB (power_out / power_in);
|
|
|
|
assert (!ISINF(power));
|
|
assert (!ISNAN(power));
|
|
|
|
float yCoeff = ( power - _min_dB) / (_max_dB - _min_dB);
|
|
|
|
y = _analysis_height - _analysis_height*yCoeff;
|
|
|
|
if ( i == 0 ) {
|
|
cairo_move_to(cr, x, y);
|
|
|
|
avgY = 0;
|
|
avgNum = 0;
|
|
} else if (rint(x) > prevX || i == _impulse_fft->bins()-1 ) {
|
|
avgY = avgY/(float)avgNum;
|
|
if (avgY > (height * 10.0) ) avgY = height * 10.0;
|
|
if (avgY < (-height * 10.0) ) avgY = -height * 10.0;
|
|
cairo_line_to(cr, prevX, avgY);
|
|
|
|
avgY = 0;
|
|
avgNum = 0;
|
|
|
|
}
|
|
|
|
prevX = rint(x);
|
|
avgY += y;
|
|
avgNum++;
|
|
}
|
|
|
|
cairo_stroke(cr);
|
|
}
|