d9106e99a4
git-svn-id: svn://localhost/ardour2/branches/3.0@3958 d708f5d6-7413-0410-9779-e7cbd77b26cf
563 lines
13 KiB
C++
563 lines
13 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 "eq_gui.h"
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#include "fft.h"
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#include "ardour_ui.h"
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#include <ardour/audio_buffer.h>
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#include <ardour/data_type.h>
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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 <iostream>
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PluginEqGui::PluginEqGui(boost::shared_ptr<ARDOUR::PluginInsert> pluginInsert)
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: _mindB(-12.0),
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_maxdB(+12.0),
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_dBStep(3.0),
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_impulseFft(0)
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{
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_samplerate = ARDOUR_UI::instance()->the_session()->frame_rate();
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_plugin = pluginInsert->get_impulse_analysis_plugin();
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_plugin->activate();
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setBufferSize(4096);
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_logCoeff = (1.0 - 2.0 * (1000.0/(_samplerate/2.0))) / powf(1000.0/(_samplerate/2.0), 2.0);
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_logMax = log10f(1 + _logCoeff);
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// Setup analysis drawing area
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_analysisScaleSurface = 0;
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_analysisArea = new Gtk::DrawingArea();
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_analysisWidth = 500.0;
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_analysisHeight = 500.0;
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_analysisArea->set_size_request(_analysisWidth, _analysisHeight);
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_analysisArea->signal_expose_event().connect( sigc::mem_fun (*this, &PluginEqGui::exposeAnalysisArea));
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_analysisArea->signal_size_allocate().connect( sigc::mem_fun (*this, &PluginEqGui::resizeAnalysisArea));
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// dB selection
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dBScaleModel = Gtk::ListStore::create(dBColumns);
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dBScaleCombo = new Gtk::ComboBox(dBScaleModel);
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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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#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::dBScaleChanged) );
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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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phaseSelect = new Gtk::CheckButton("Show phase");
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phaseSelect->set_active(true);
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phaseSelect->signal_toggled().connect( sigc::mem_fun(*this, &PluginEqGui::redrawScales));
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// Update button
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Gtk::Button *btn = new Gtk::Button("Update");
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btn->signal_clicked().connect( sigc::mem_fun(*this, &PluginEqGui::runAnalysis));
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// populate table
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attach( *manage(_analysisArea), 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(phaseSelect), 2, 3, 2, 3, Gtk::SHRINK, Gtk::SHRINK);
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attach( *manage(btn), 3, 4, 2, 3, Gtk::SHRINK, Gtk::SHRINK);
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// Timeout
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//_updateConn = Glib::signal_timeout().connect( sigc::mem_fun(this, &PluginEqGui::timeoutCallback), 250);
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}
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PluginEqGui::~PluginEqGui()
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{
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std::cerr << "Destroying PluginEqGui for " << _plugin->name() << std::endl;
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if (_analysisScaleSurface) {
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cairo_surface_destroy (_analysisScaleSurface);
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}
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delete _impulseFft;
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_plugin->deactivate();
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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::on_hide()
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{
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Gtk::Table::on_hide();
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_updateConn.disconnect();
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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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_updateConn = Glib::signal_timeout().connect( sigc::mem_fun(this, &PluginEqGui::timeoutCallback), 250);
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}
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void
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PluginEqGui::dBScaleChanged()
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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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_mindB = row[dBColumns.dBMin];
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_maxdB = row[dBColumns.dBMax];
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_dBStep = row[dBColumns.dBStep];
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redrawScales();
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}
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}
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void
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PluginEqGui::redrawScales()
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{
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if (_analysisScaleSurface) {
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cairo_surface_destroy (_analysisScaleSurface);
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_analysisScaleSurface = 0;
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}
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_analysisArea->queue_draw();
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}
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void
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PluginEqGui::setBufferSize(uint32_t size)
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{
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if (_bufferSize == size)
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return;
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_bufferSize = size;
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if (_impulseFft) {
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delete _impulseFft;
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_impulseFft = 0;
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}
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_impulseFft = new FFT(_bufferSize);
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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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uint32_t n_chans = std::max(inputs, outputs);
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_bufferset.ensure_buffers(ARDOUR::DataType::AUDIO, n_chans, _bufferSize);
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ARDOUR::ChanCount chanCount(ARDOUR::DataType::AUDIO, n_chans);
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_bufferset.set_count(chanCount);
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/*
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const uint32_t nbufs = _bufferset.count().n_audio();
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std::cerr << "ensure_buffers(ARDOUR::DataType::Audio, " << n_chans << ", " << _bufferSize << "), _bufferset.count().n_audio() = " << nbufs << std::endl;
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*/
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}
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void
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PluginEqGui::resizeAnalysisArea(Gtk::Allocation& size)
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{
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_analysisWidth = (float)size.get_width();
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_analysisHeight = (float)size.get_height();
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if (_analysisScaleSurface) {
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cairo_surface_destroy (_analysisScaleSurface);
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_analysisScaleSurface = 0;
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}
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}
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bool
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PluginEqGui::timeoutCallback()
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{
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/*
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struct timeval tv;
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struct timezone tz;
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gettimeofday(&tv, &tz);
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std::cerr << " time = " << tv.tv_sec << ":" << tv.tv_usec << std::endl;
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*/
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runAnalysis();
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return true;
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}
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void
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PluginEqGui::runAnalysis()
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{
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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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const uint32_t nbufs = _bufferset.count().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(_bufferSize, 0);
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memset(d, 0, sizeof(ARDOUR::Sample)*_bufferSize);
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*d = 1.0;
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}
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uint32_t x,y;
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x=y=0;
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_plugin->connect_and_run(_bufferset, x, y, _bufferSize, (nframes_t)0);
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// Analyze all output buffers
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_impulseFft->reset();
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for (uint32_t i = 0; i < outputs; ++i) {
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_impulseFft->analyze(_bufferset.get_audio(i).data(_bufferSize, 0));
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}
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// normalize the output
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_impulseFft->calculate();
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// This signals calls exposeAnalysisArea()
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_analysisArea->queue_draw();
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}
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bool
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PluginEqGui::exposeAnalysisArea(GdkEventExpose *evt)
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{
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redrawAnalysisArea();
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return false;
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}
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void
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PluginEqGui::generateAnalysisScale(cairo_t *ref_cr)
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{
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// TODO: check whether we need rounding
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_analysisScaleSurface = cairo_surface_create_similar(cairo_get_target(ref_cr),
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CAIRO_CONTENT_COLOR,
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_analysisWidth,
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_analysisHeight);
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cairo_t *cr = cairo_create (_analysisScaleSurface);
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cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
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cairo_rectangle(cr, 0.0, 0.0, _analysisWidth, _analysisHeight);
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cairo_fill(cr);
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drawPowerScale(_analysisArea, cr);
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if (phaseSelect->get_active()) {
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drawPhaseScale(_analysisArea, cr);
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}
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cairo_destroy(cr);
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}
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void
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PluginEqGui::redrawAnalysisArea()
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{
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cairo_t *cr;
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cr = gdk_cairo_create(GDK_DRAWABLE(_analysisArea->get_window()->gobj()));
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if (_analysisScaleSurface == 0) {
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generateAnalysisScale(cr);
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}
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cairo_copy_page(cr);
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cairo_set_source_surface(cr, _analysisScaleSurface, 0.0, 0.0);
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cairo_paint(cr);
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if (phaseSelect->get_active()) {
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drawPhase(_analysisArea, cr);
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}
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drawPower(_analysisArea, cr);
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cairo_destroy(cr);
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}
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#define PHASE_PROPORTION 0.6
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void
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PluginEqGui::drawPhaseScale(Gtk::Widget *w, cairo_t *cr)
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{
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float y;
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cairo_font_extents_t extents;
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cairo_font_extents(cr, &extents);
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char buf[256];
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cairo_text_extents_t t_ext;
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for (uint32_t i = 0; i < 3; i++) {
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y = _analysisHeight/2.0 - (float)i*(_analysisHeight/8.0)*PHASE_PROPORTION;
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cairo_set_source_rgb(cr, .8, .9, 0.2);
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if (i == 0) {
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snprintf(buf,256, "0\u00b0");
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} else {
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snprintf(buf,256, "%d\u00b0", (i * 45));
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}
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cairo_text_extents(cr, buf, &t_ext);
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cairo_move_to(cr, _analysisWidth - t_ext.width - t_ext.x_bearing - 2.0, y - extents.descent);
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cairo_show_text(cr, buf);
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if (i == 0)
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continue;
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cairo_set_source_rgba(cr, .8, .9, 0.2, 0.6/(float)i);
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cairo_move_to(cr, 0.0, y);
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cairo_line_to(cr, _analysisWidth, y);
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y = _analysisHeight/2.0 + (float)i*(_analysisHeight/8.0)*PHASE_PROPORTION;
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// label
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snprintf(buf,256, "-%d\u00b0", (i * 45));
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cairo_set_source_rgb(cr, .8, .9, 0.2);
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cairo_text_extents(cr, buf, &t_ext);
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cairo_move_to(cr, _analysisWidth - t_ext.width - t_ext.x_bearing - 2.0, y - extents.descent);
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cairo_show_text(cr, buf);
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// line
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cairo_set_source_rgba(cr, .8, .9, 0.2, 0.6/(float)i);
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cairo_move_to(cr, 0.0, y);
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cairo_line_to(cr, _analysisWidth, y);
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cairo_set_line_width (cr, 0.25 + 1.0/(float)(i+1));
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cairo_stroke(cr);
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}
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}
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void
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PluginEqGui::drawPhase(Gtk::Widget *w, cairo_t *cr)
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{
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float x,y;
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int prevX = 0;
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float avgY = 0.0;
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int avgNum = 0;
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cairo_set_source_rgba(cr, 0.95, 0.3, 0.2, 1.0);
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for (uint32_t i = 0; i < _impulseFft->bins()-1; i++) {
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// x coordinate of bin i
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x = log10f(1.0 + (float)i / (float)_impulseFft->bins() * _logCoeff) / _logMax;
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x *= _analysisWidth;
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y = _analysisHeight/2.0 - (_impulseFft->phaseAtBin(i)/M_PI)*(_analysisHeight/2.0)*PHASE_PROPORTION;
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if ( i == 0 ) {
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cairo_move_to(cr, x, y);
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avgY = 0;
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avgNum = 0;
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} else if (rint(x) > prevX || i == _impulseFft->bins()-1 ) {
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cairo_line_to(cr, prevX, avgY/(float)avgNum);
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avgY = 0;
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avgNum = 0;
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}
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prevX = rint(x);
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avgY += y;
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avgNum++;
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}
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cairo_set_line_width (cr, 2.0);
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cairo_stroke(cr);
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}
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void
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PluginEqGui::drawPowerScale(Gtk::Widget *w, cairo_t *cr)
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{
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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 };
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float divisor = _samplerate / 2.0 / _impulseFft->bins();
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float x;
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cairo_set_line_width (cr, 1.5);
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cairo_set_font_size(cr, 9);
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cairo_font_extents_t extents;
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cairo_font_extents(cr, &extents);
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float fontXOffset = extents.descent + 1.0;
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char buf[256];
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for (uint32_t i = 0; scales[i] != -1.0; ++i) {
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float bin = scales[i] / divisor;
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x = log10f(1.0 + bin / (float)_impulseFft->bins() * _logCoeff) / _logMax;
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x *= _analysisWidth;
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if (scales[i] < 1000.0) {
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snprintf(buf, 256, "%0.0f", scales[i]);
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} else {
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snprintf(buf, 256, "%0.0fk", scales[i]/1000.0);
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}
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cairo_set_source_rgb(cr, 0.4, 0.4, 0.4);
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cairo_move_to(cr, x + fontXOffset, 3.0);
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cairo_rotate(cr, M_PI / 2.0);
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cairo_show_text(cr, buf);
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cairo_rotate(cr, -M_PI / 2.0);
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cairo_stroke(cr);
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cairo_set_source_rgb(cr, 0.3, 0.3, 0.3);
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cairo_move_to(cr, x, _analysisHeight);
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cairo_line_to(cr, x, 0.0);
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cairo_stroke(cr);
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}
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float y;
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//double dashes[] = { 1.0, 3.0, 4.5, 3.0 };
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double dashes[] = { 3.0, 5.0 };
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for (float dB = 0.0; dB < _maxdB; dB += _dBStep ) {
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snprintf(buf, 256, "+%0.0f", dB );
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y = ( _maxdB - dB) / ( _maxdB - _mindB );
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//std::cerr << " y = " << y << std::endl;
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y *= _analysisHeight;
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if (dB != 0.0) {
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cairo_set_source_rgb(cr, 0.4, 0.4, 0.4);
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cairo_move_to(cr, 1.0, y + extents.height + 1.0);
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cairo_show_text(cr, buf);
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cairo_stroke(cr);
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}
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cairo_set_source_rgb(cr, 0.2, 0.2, 0.2);
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cairo_move_to(cr, 0, y);
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cairo_line_to(cr, _analysisWidth, y);
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cairo_stroke(cr);
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if (dB == 0.0) {
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cairo_set_dash(cr, dashes, 2, 0.0);
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}
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}
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for (float dB = - _dBStep; dB > _mindB; dB -= _dBStep ) {
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snprintf(buf, 256, "%0.0f", dB );
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y = ( _maxdB - dB) / ( _maxdB - _mindB );
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y *= _analysisHeight;
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cairo_set_source_rgb(cr, 0.4, 0.4, 0.4);
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cairo_move_to(cr, 1.0, y - extents.descent - 1.0);
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cairo_show_text(cr, buf);
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cairo_stroke(cr);
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cairo_set_source_rgb(cr, 0.2, 0.2, 0.2);
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cairo_move_to(cr, 0, y);
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cairo_line_to(cr, _analysisWidth, y);
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cairo_stroke(cr);
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}
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|
|
|
cairo_set_dash(cr, 0, 0, 0.0);
|
|
|
|
}
|
|
|
|
inline float
|
|
power_to_dB(float a)
|
|
{
|
|
return 10.0 * log10f(a);
|
|
}
|
|
|
|
void
|
|
PluginEqGui::drawPower(Gtk::Widget *w, cairo_t *cr)
|
|
{
|
|
float x,y;
|
|
|
|
int prevX = 0;
|
|
float avgY = 0.0;
|
|
int avgNum = 0;
|
|
|
|
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
|
|
cairo_set_line_width (cr, 2.5);
|
|
|
|
for (uint32_t i = 0; i < _impulseFft->bins()-1; i++) {
|
|
// x coordinate of bin i
|
|
x = log10f(1.0 + (float)i / (float)_impulseFft->bins() * _logCoeff) / _logMax;
|
|
x *= _analysisWidth;
|
|
|
|
float yCoeff = ( power_to_dB(_impulseFft->powerAtBin(i)) - _mindB) / (_maxdB - _mindB);
|
|
|
|
y = _analysisHeight - _analysisHeight*yCoeff;
|
|
|
|
if ( i == 0 ) {
|
|
cairo_move_to(cr, x, y);
|
|
|
|
avgY = 0;
|
|
avgNum = 0;
|
|
} else if (rint(x) > prevX || i == _impulseFft->bins()-1 ) {
|
|
cairo_line_to(cr, prevX, avgY/(float)avgNum);
|
|
|
|
avgY = 0;
|
|
avgNum = 0;
|
|
|
|
}
|
|
|
|
prevX = rint(x);
|
|
avgY += y;
|
|
avgNum++;
|
|
}
|
|
|
|
cairo_stroke(cr);
|
|
}
|
|
|