667 lines
16 KiB
C++
667 lines
16 KiB
C++
/*
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* Copyright (C) 2006-2009 David Robillard <d@drobilla.net>
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* Copyright (C) 2006-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2006 Sampo Savolainen <v2@iki.fi>
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* Copyright (C) 2016-2017 Robin Gareus <robin@gareus.org>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <iostream>
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#include <glibmm.h>
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#include <glibmm/refptr.h>
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#include <gdkmm/gc.h>
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#include <gtkmm/widget.h>
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#include <gtkmm/style.h>
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#include <gtkmm/treemodel.h>
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#include <gtkmm/treepath.h>
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#include "pbd/stl_delete.h"
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#include <math.h>
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#include "fft_graph.h"
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#include "analysis_window.h"
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#include "public_editor.h"
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#include "pbd/i18n.h"
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using namespace std;
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using namespace Gtk;
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using namespace Gdk;
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FFTGraph::FFTGraph (int windowSize)
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{
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_logScale = 0;
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_in = 0;
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_out = 0;
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_hanning = 0;
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_logScale = 0;
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_surface = 0;
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_a_window = 0;
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_show_minmax = false;
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_show_normalized = false;
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_show_proportional = false;
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_ann_x = _ann_y = -1;
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_yoff = v_margin;
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_ann_area.width = 0;
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_ann_area.height = 0;
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setWindowSize (windowSize);
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set_events (Gdk::POINTER_MOTION_MASK | Gdk::LEAVE_NOTIFY_MASK | Gdk::BUTTON_PRESS_MASK);
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}
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void
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FFTGraph::setWindowSize (int windowSize)
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{
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if (_a_window) {
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Glib::Threads::Mutex::Lock lm (_a_window->track_list_lock);
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setWindowSize_internal (windowSize);
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} else {
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setWindowSize_internal (windowSize);
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}
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}
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void
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FFTGraph::setWindowSize_internal (int windowSize)
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{
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// remove old tracklist & graphs
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if (_a_window) {
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_a_window->clear_tracklist ();
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}
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_windowSize = windowSize;
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_dataSize = windowSize / 2;
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if (_in != 0) {
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fftwf_destroy_plan (_plan);
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free (_in);
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_in = 0;
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}
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if (_out != 0) {
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free (_out);
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_out = 0;
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}
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if (_hanning != 0) {
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free (_hanning);
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_hanning = 0;
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}
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if (_logScale != 0) {
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free (_logScale);
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_logScale = 0;
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}
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// When destroying, window size is set to zero to free up memory
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if (windowSize == 0) {
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return;
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}
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// FFT input & output buffers
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_in = (float *) fftwf_malloc (sizeof (float) * _windowSize);
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_out = (float *) fftwf_malloc (sizeof (float) * _windowSize);
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// Hanning window
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_hanning = (float *) malloc (sizeof (float) * _windowSize);
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// normalize the window
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double sum = 0.0;
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for (unsigned int i = 0; i < _windowSize; ++i) {
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_hanning[i] = 0.5f - (0.5f * (float) cos (2.0f * M_PI * (float)i / (float)(_windowSize)));
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sum += _hanning[i];
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}
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double isum = 2.0 / sum;
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for (unsigned int i = 0; i < _windowSize; i++) {
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_hanning[i] *= isum;
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}
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_logScale = (int *) malloc (sizeof (int) * _dataSize);
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for (unsigned int i = 0; i < _dataSize; i++) {
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_logScale[i] = 0;
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}
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_plan = fftwf_plan_r2r_1d (_windowSize, _in, _out, FFTW_R2HC, FFTW_MEASURE);
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}
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FFTGraph::~FFTGraph ()
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{
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// This will free everything
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setWindowSize (0);
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if (_surface) {
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cairo_surface_destroy (_surface);
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}
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}
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bool
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FFTGraph::on_expose_event (GdkEventExpose* event)
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{
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cairo_t* cr = gdk_cairo_create (GDK_DRAWABLE (get_window ()->gobj ()));
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cairo_rectangle (cr, event->area.x, event->area.y, event->area.width, event->area.height);
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cairo_clip (cr);
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cairo_set_source_surface(cr, _surface, 0, 0);
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cairo_paint (cr);
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if (_ann_x > 0 && _ann_y > 0) {
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const float x = _ann_x - hl_margin;
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const float freq = expf(_fft_log_base * x / currentScaleWidth) * _fft_start;
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std::stringstream ss;
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if (freq >= 10000) {
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ss << std::setprecision (1) << std::fixed << freq / 1000 << " kHz";
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} else if (freq >= 1000) {
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ss << std::setprecision (2) << std::fixed << freq / 1000 << " kHz";
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} else {
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ss << std::setprecision (0) << std::fixed << freq << " Hz";
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}
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layout->set_text (ss.str ());
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int lw, lh;
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layout->get_pixel_size (lw, lh);
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lw|=1; lh|=1;
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const float y0 = _ann_y - lh - 7;
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_ann_area.x = _ann_x - 1 - lw * .5;
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_ann_area.y = y0 - 1;
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_ann_area.width = lw + 3;
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_ann_area.height = lh + 8;
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cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.7);
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cairo_rectangle (cr, _ann_x - 1 - lw * .5, y0 - 1, lw + 2, lh + 2);
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cairo_fill (cr);
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cairo_move_to (cr, _ann_x , _ann_y - 0.5);
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cairo_rel_line_to (cr, -3.0, -5.5);
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cairo_rel_line_to (cr, 6, 0);
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cairo_close_path (cr);
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cairo_fill (cr);
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cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
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cairo_move_to (cr, _ann_x - lw / 2, y0);
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pango_cairo_update_layout (cr, layout->gobj ());
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pango_cairo_show_layout (cr, layout->gobj ());
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}
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#ifdef HARLEQUIN_DEBUGGING
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cairo_rectangle (cr, 0, 0, width, height);
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cairo_set_source_rgba (cr, (random() % 255) / 255.f, (random() % 255) / 255.f, 0.0, 0.5);
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cairo_fill (cr);
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#endif
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cairo_destroy (cr);
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return true;
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}
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bool
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FFTGraph::on_motion_notify_event (GdkEventMotion* ev)
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{
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gint x, y;
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x = (int) floor (ev->x);
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y = (int) floor (ev->y);
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if (x <= hl_margin + 1 || x >= width - hr_margin) {
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x = -1;
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}
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if (y <= _yoff || y >= height - v_margin - 1) {
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y = -1;
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}
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if (x == _ann_x && y == _ann_y) {
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return true;
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}
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_ann_x = x;
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_ann_y = y;
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if (_ann_area.width == 0 || _ann_area.height == 0) {
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queue_draw ();
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} else {
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queue_draw_area (_ann_area.x, _ann_area.y, _ann_area.width, _ann_area.height + 1);
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}
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if (_ann_x > 0 &&_ann_y > 0) {
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queue_draw_area (_ann_x - _ann_area.width, _ann_y - _ann_area.height - 1, _ann_area.width * 2, _ann_area.height + 2);
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}
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return true;
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}
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bool
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FFTGraph::on_leave_notify_event (GdkEventCrossing *)
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{
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if (_ann_x == -1 && _ann_y == -1) {
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return true;
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}
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_ann_x = _ann_y = -1;
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if (_ann_area.width == 0 || _ann_area.height == 0) {
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queue_draw ();
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} else {
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queue_draw_area (_ann_area.x, _ann_area.y, _ann_area.width, _ann_area.height + 1);
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}
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_ann_area.width = _ann_area.height = 0;
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return false;
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}
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FFTResult *
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FFTGraph::prepareResult (Gdk::Color color, string trackname)
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{
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FFTResult *res = new FFTResult (this, color, trackname);
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return res;
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}
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void
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FFTGraph::set_analysis_window (AnalysisWindow *a_window)
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{
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_a_window = a_window;
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}
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int
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FFTGraph::draw_scales (cairo_t* cr)
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{
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int label_height = v_margin;
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cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
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cairo_rectangle (cr, 0, 0, width, height);
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cairo_fill (cr);
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/*
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* 1 5
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* _ _
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* | |
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* 2 | | 4
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* |________|
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* 3
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*/
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cairo_set_line_width (cr, 1.0);
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cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 1.0);
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cairo_move_to (cr, 3 , .5 + v_margin);
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cairo_line_to (cr, .5 + hl_margin , .5 + v_margin); // 1
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cairo_line_to (cr, .5 + hl_margin , .5 + height - v_margin); // 2
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cairo_line_to (cr, 1.5 + width - hr_margin, .5 + height - v_margin); // 3
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cairo_line_to (cr, 1.5 + width - hr_margin, .5 + v_margin); // 4
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cairo_line_to (cr, width - 3 , .5 + v_margin); // 5
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cairo_stroke (cr);
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if (! layout) {
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layout = create_pango_layout ("");
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layout->set_font_description (get_style ()->get_font ());
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}
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// Draw x-axis scale 1/3 octaves centered around 1K
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int overlap = 0;
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// make sure 1K (x=0) is visible
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for (int x = 0; x < 27; ++x) {
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float freq = powf (2.f, x / 3.0) * 1000.f;
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if (freq <= _fft_start) { continue; }
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if (freq >= _fft_end) { break; }
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const float pos = currentScaleWidth * logf (freq / _fft_start) / _fft_log_base;
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const int coord = floor (hl_margin + pos);
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if (coord < overlap) {
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continue;
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}
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std::stringstream ss;
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if (freq >= 10000) {
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ss << std::setprecision (1) << std::fixed << freq / 1000 << "k";
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} else if (freq >= 1000) {
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ss << std::setprecision (2) << std::fixed << freq / 1000 << "k";
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} else {
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ss << std::setprecision (0) << std::fixed << freq << "Hz";
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}
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layout->set_text (ss.str ());
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int lw, lh;
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layout->get_pixel_size (lw, lh);
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overlap = coord + lw + 3;
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if (coord + lw / 2 > width - hr_margin - 2) {
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break;
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}
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if (v_margin / 2 + lh > label_height) {
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label_height = v_margin / 2 + lh;
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}
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cairo_set_source_rgba (cr, 0.2, 0.2, 0.2, 1.0);
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cairo_move_to (cr, coord, v_margin);
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cairo_line_to (cr, coord, height - v_margin - 1);
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cairo_stroke (cr);
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cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 1.0);
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cairo_move_to (cr, coord - lw / 2, v_margin / 2);
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pango_cairo_update_layout (cr, layout->gobj ());
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pango_cairo_show_layout (cr, layout->gobj ());
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}
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// now from 1K down to 4Hz
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for (int x = 0; x > -24; --x) {
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float freq = powf (2.f, x / 3.0) * 1000.f;
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if (freq >= _fft_end) { continue; }
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if (freq <= _fft_start) { break; }
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const float pos = currentScaleWidth * logf (freq / _fft_start) / _fft_log_base;
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const int coord = floor (hl_margin + pos);
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if (x != 0 && coord > overlap) {
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continue;
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}
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std::stringstream ss;
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if (freq >= 10000) {
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ss << std::setprecision (1) << std::fixed << freq / 1000 << "k";
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} else if (freq >= 1000) {
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ss << std::setprecision (2) << std::fixed << freq / 1000 << "k";
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} else {
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ss << std::setprecision (0) << std::fixed << freq << "Hz";
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}
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layout->set_text (ss.str ());
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int lw, lh;
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layout->get_pixel_size (lw, lh);
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overlap = coord - lw - 3;
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if (coord - lw / 2 < hl_margin + 2) {
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break;
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}
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if (x == 0) {
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// just get overlap position
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continue;
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}
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if (v_margin / 2 + lh > label_height) {
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label_height = v_margin / 2 + lh;
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}
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cairo_set_source_rgba (cr, 0.2, 0.2, 0.2, 1.0);
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cairo_move_to (cr, coord, v_margin);
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cairo_line_to (cr, coord, height - v_margin - 1);
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cairo_stroke (cr);
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cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 1.0);
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cairo_move_to (cr, coord - lw / 2, v_margin / 2);
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pango_cairo_update_layout (cr, layout->gobj ());
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pango_cairo_show_layout (cr, layout->gobj ());
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}
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return label_height;
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}
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void
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FFTGraph::redraw ()
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{
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assert (_surface);
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cairo_t* cr = cairo_create (_surface);
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_yoff = draw_scales (cr);
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if (_a_window == 0) {
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cairo_destroy (cr);
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queue_draw ();
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return;
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}
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Glib::Threads::Mutex::Lock lm (_a_window->track_list_lock);
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if (!_a_window->track_list_ready) {
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cairo_destroy (cr);
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queue_draw ();
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return;
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}
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float minf;
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float maxf;
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TreeNodeChildren track_rows = _a_window->track_list.get_model ()->children ();
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if (!_show_normalized) {
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maxf = 0.0f;
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minf = -108.0f;
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} else {
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minf = 999.0f;
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maxf = -999.0f;
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for (TreeIter i = track_rows.begin (); i != track_rows.end (); i++) {
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TreeModel::Row row = *i;
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FFTResult *res = row[_a_window->tlcols.graph];
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// disregard fft analysis from empty signals
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if (res->minimum (_show_proportional) == res->maximum (_show_proportional)) {
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continue;
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}
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// don't include invisible graphs
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if (!row[_a_window->tlcols.visible]) {
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continue;
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}
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minf = std::min (minf, res->minimum (_show_proportional));
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maxf = std::max (maxf, res->maximum (_show_proportional));
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}
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}
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// clamp range, > -200dBFS, at least 24dB (two y-axis labels) range
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minf = std::max (-200.f, minf);
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if (maxf <= minf) {
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cairo_destroy (cr);
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queue_draw ();
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return;
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}
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if (maxf - minf < 24) {
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maxf += 6.f;
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minf = maxf - 24.f;
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}
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cairo_set_line_width (cr, 1.5);
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cairo_translate (cr, hl_margin + 1, _yoff);
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float fft_pane_size_w = width - hl_margin - hr_margin;
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float fft_pane_size_h = height - v_margin - 1 - _yoff;
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double pixels_per_db = (double)fft_pane_size_h / (double)(maxf - minf);
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// draw y-axis dB
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cairo_set_source_rgba (cr, .8, .8, .8, 1.0);
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int btm_lbl = fft_pane_size_h;
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{
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// y-axis legend
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layout->set_text (_("dBFS"));
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int lw, lh;
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layout->get_pixel_size (lw, lh);
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cairo_move_to (cr, -2 - lw, fft_pane_size_h - lh / 2);
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pango_cairo_update_layout (cr, layout->gobj ());
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pango_cairo_show_layout (cr, layout->gobj ());
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btm_lbl = fft_pane_size_h - lh;
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}
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for (int x = -6; x >= -200; x -= 12) {
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float yp = 1.5 + fft_pane_size_h - rint ((x - minf) * pixels_per_db);
|
|
|
|
assert (layout);
|
|
std::stringstream ss;
|
|
ss << x;
|
|
layout->set_text (ss.str ());
|
|
int lw, lh;
|
|
layout->get_pixel_size (lw, lh);
|
|
|
|
if (yp + 2 + lh / 2 > btm_lbl) {
|
|
continue;
|
|
}
|
|
if (yp < 2 + lh / 2) {
|
|
continue;
|
|
}
|
|
|
|
cairo_set_source_rgba (cr, .8, .8, .8, 1.0);
|
|
cairo_move_to (cr, -2 - lw, yp - lh / 2);
|
|
pango_cairo_update_layout (cr, layout->gobj ());
|
|
pango_cairo_show_layout (cr, layout->gobj ());
|
|
|
|
cairo_set_source_rgba (cr, .2, .2, .2, 1.0);
|
|
cairo_move_to (cr, 0, yp);
|
|
cairo_line_to (cr, fft_pane_size_w, yp);
|
|
cairo_stroke (cr);
|
|
}
|
|
|
|
cairo_rectangle (cr, 1, 1, fft_pane_size_w, fft_pane_size_h);
|
|
cairo_clip (cr);
|
|
|
|
cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
|
|
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
|
|
|
|
for (TreeIter i = track_rows.begin (); i != track_rows.end (); i++) {
|
|
TreeModel::Row row = *i;
|
|
|
|
// don't show graphs for tracks which are deselected
|
|
if (!row[_a_window->tlcols.visible]) {
|
|
continue;
|
|
}
|
|
|
|
FFTResult *res = row[_a_window->tlcols.graph];
|
|
|
|
// don't show graphs for empty signals
|
|
if (res->minimum (_show_proportional) == res->maximum (_show_proportional)) {
|
|
continue;
|
|
}
|
|
|
|
float mpp;
|
|
float X,Y;
|
|
|
|
if (_show_minmax) {
|
|
|
|
X = 0.5f + _logScale[0];
|
|
Y = 1.5f + fft_pane_size_h - pixels_per_db * (res->maxAt (0, _show_proportional) - minf);
|
|
cairo_move_to (cr, X, Y);
|
|
|
|
// Draw the line of maximum values
|
|
mpp = minf;
|
|
for (unsigned int x = 1; x < res->length () - 1; ++x) {
|
|
mpp = std::max (mpp, res->maxAt (x, _show_proportional));
|
|
|
|
if (_logScale[x] == _logScale[x + 1]) {
|
|
continue;
|
|
}
|
|
|
|
mpp = fmin (mpp, maxf);
|
|
X = 0.5f + _logScale[x];
|
|
Y = 1.5f + fft_pane_size_h - pixels_per_db * (mpp - minf);
|
|
cairo_line_to (cr, X, Y);
|
|
mpp = minf;
|
|
}
|
|
|
|
mpp = maxf;
|
|
// Draw back to the start using the minimum value
|
|
for (int x = res->length () - 1; x >= 0; --x) {
|
|
mpp = std::min (mpp, res->minAt (x, _show_proportional));
|
|
|
|
if (_logScale[x] == _logScale[x + 1]) {
|
|
continue;
|
|
}
|
|
|
|
mpp = fmax (mpp, minf);
|
|
X = 0.5f + _logScale[x];
|
|
Y = 1.5f + fft_pane_size_h - pixels_per_db * (mpp - minf);
|
|
cairo_line_to (cr, X, Y);
|
|
mpp = maxf;
|
|
}
|
|
|
|
cairo_set_source_rgba (cr, res->get_color ().get_red_p (), res->get_color ().get_green_p (), res->get_color ().get_blue_p (), 0.30);
|
|
cairo_close_path (cr);
|
|
cairo_fill (cr);
|
|
}
|
|
|
|
// draw max of averages
|
|
X = 0.5f + _logScale[0];
|
|
Y = 1.5f + fft_pane_size_h - pixels_per_db * (res->avgAt (0, _show_proportional) - minf);
|
|
cairo_move_to (cr, X, Y);
|
|
|
|
mpp = minf;
|
|
for (unsigned int x = 0; x < res->length () - 1; x++) {
|
|
mpp = std::max (mpp, res->avgAt (x, _show_proportional));
|
|
|
|
if (_logScale[x] == _logScale[x + 1]) {
|
|
continue;
|
|
}
|
|
|
|
mpp = fmax (mpp, minf);
|
|
mpp = fmin (mpp, maxf);
|
|
|
|
X = 0.5f + _logScale[x];
|
|
Y = 1.5f + fft_pane_size_h - pixels_per_db * (mpp - minf);
|
|
cairo_line_to (cr, X, Y);
|
|
mpp = minf;
|
|
}
|
|
|
|
cairo_set_source_rgb (cr, res->get_color ().get_red_p (), res->get_color ().get_green_p (), res->get_color ().get_blue_p ());
|
|
cairo_stroke (cr);
|
|
}
|
|
cairo_destroy (cr);
|
|
queue_draw ();
|
|
}
|
|
|
|
void
|
|
FFTGraph::on_size_request (Gtk::Requisition* requisition)
|
|
{
|
|
width = max (requisition->width, minScaleWidth + hl_margin + hr_margin);
|
|
height = max (requisition->height, minScaleHeight + 2 + v_margin * 2);
|
|
|
|
requisition->width = width;;
|
|
requisition->height = height;
|
|
}
|
|
|
|
void
|
|
FFTGraph::on_size_allocate (Gtk::Allocation & alloc)
|
|
{
|
|
width = alloc.get_width ();
|
|
height = alloc.get_height ();
|
|
|
|
update_size ();
|
|
|
|
DrawingArea::on_size_allocate (alloc);
|
|
}
|
|
|
|
void
|
|
FFTGraph::update_size ()
|
|
{
|
|
samplecnt_t SR = PublicEditor::instance ().session ()->nominal_sample_rate ();
|
|
_fft_start = SR / (double)_dataSize;
|
|
_fft_end = .5 * SR;
|
|
_fft_log_base = logf (.5 * _dataSize);
|
|
currentScaleWidth = width - hl_margin - hr_margin;
|
|
_logScale[0] = 0;
|
|
for (unsigned int i = 1; i < _dataSize; ++i) {
|
|
_logScale[i] = floor (currentScaleWidth * logf (.5 * i) / _fft_log_base);
|
|
}
|
|
if (_surface) {
|
|
cairo_surface_destroy (_surface);
|
|
}
|
|
_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
|
|
redraw ();
|
|
}
|