Clementine-audio-player-Mac.../src/analyzers/sonogram.cpp

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/* This file is part of Clementine.
Copyright 2004, Melchior FRANZ <mfranz@kde.org>
Copyright 2009-2010, David Sansome <davidsansome@gmail.com>
Copyright 2010, 2014, John Maguire <john.maguire@gmail.com>
Copyright 2014-2015, Mark Furneaux <mark@furneaux.ca>
Copyright 2014, Krzysztof Sobiecki <sobkas@gmail.com>
Clementine is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Clementine is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
/* Original Author: Melchior FRANZ <mfranz@kde.org> 2004
*/
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#include "sonogram.h"
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#include <QPainter>
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using Analyzer::Scope;
const char* Sonogram::kName =
QT_TRANSLATE_NOOP("AnalyzerContainer", "Sonogram");
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Sonogram::Sonogram(QWidget* parent)
: Analyzer::Base(parent, 9), scope_size_(128) {}
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Sonogram::~Sonogram() {}
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void Sonogram::resizeEvent(QResizeEvent* e) {
QWidget::resizeEvent(e);
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// only for gcc < 4.0
#if !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 0))
resizeForBands(height() < 128 ? 128 : height());
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#endif
canvas_ = QPixmap(size());
canvas_.fill(palette().color(QPalette::Background));
updateBandSize(scope_size_);
}
void Sonogram::psychedelicModeChanged(bool enabled) {
psychedelic_enabled_ = enabled;
updateBandSize(scope_size_);
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}
void Sonogram::analyze(QPainter& p, const Scope& s, bool new_frame) {
if (!new_frame || engine_->state() == Engine::Paused) {
p.drawPixmap(0, 0, canvas_);
return;
}
int x = width() - 1;
QColor c;
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QPainter canvas_painter(&canvas_);
canvas_painter.drawPixmap(0, 0, canvas_, 1, 0, x, -1);
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Scope::const_iterator it = s.begin(), end = s.end();
if (scope_size_ != s.size()) {
scope_size_ = s.size();
updateBandSize(scope_size_);
}
if (psychedelic_enabled_) {
c = getPsychedelicColor(s, 20, 100);
for (int y = height() - 1; y;) {
if (it >= end || *it < .005) {
c = palette().color(QPalette::Background);
} else if (*it < .05) {
c.setHsv(c.hue(), c.saturation(), 255 - static_cast<int>(*it * 4000.0));
} else if (*it < 1.0) {
c.setHsv((c.hue() + static_cast<int>(*it * 90.0)) % 255, 255, 255);
} else {
c = getPsychedelicColor(s, 10, 50);
}
canvas_painter.setPen(c);
canvas_painter.drawPoint(x, y--);
if (it < end) ++it;
}
} else {
for (int y = height() - 1; y;) {
if (it >= end || *it < .005)
c = palette().color(QPalette::Background);
else if (*it < .05)
c.setHsv(95, 255, 255 - static_cast<int>(*it * 4000.0));
else if (*it < 1.0)
c.setHsv(95 - static_cast<int>(*it * 90.0), 255, 255);
else
c = Qt::red;
canvas_painter.setPen(c);
canvas_painter.drawPoint(x, y--);
if (it < end) ++it;
}
}
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canvas_painter.end();
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p.drawPixmap(0, 0, canvas_);
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}
void Sonogram::transform(Scope& scope) {
float* front = static_cast<float*>(&scope.front());
fht_->power2(front);
fht_->scale(front, 1.0 / 256);
scope.resize(fht_->size() / 2);
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}
void Sonogram::demo(QPainter& p) {
analyze(p, Scope(fht_->size(), 0), new_frame_);
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}