95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
/*
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Strawberry Music Player
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This file was part of Clementine.
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Copyright 2004, Melchior FRANZ <mfranz@kde.org>
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Copyright 2009-2010, David Sansome <davidsansome@gmail.com>
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Copyright 2010, 2014, John Maguire <john.maguire@gmail.com>
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Copyright 2014-2015, Mark Furneaux <mark@furneaux.ca>
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Copyright 2014, Krzysztof Sobiecki <sobkas@gmail.com>
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Strawberry 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 3 of the License, or
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(at your option) any later version.
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Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <QPainter>
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#include <QResizeEvent>
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#include "engine/enginebase.h"
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#include "sonogram.h"
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const char *Sonogram::kName = QT_TRANSLATE_NOOP("AnalyzerContainer", "Sonogram");
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Sonogram::Sonogram(QWidget *parent)
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: AnalyzerBase(parent, 9) {}
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void Sonogram::resizeEvent(QResizeEvent *e) {
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Q_UNUSED(e)
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canvas_ = QPixmap(size());
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canvas_.fill(palette().color(QPalette::Window));
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}
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void Sonogram::analyze(QPainter &p, const Scope &s, bool new_frame) {
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if (!new_frame || engine_->state() == EngineBase::State::Paused) {
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p.drawPixmap(0, 0, canvas_);
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return;
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}
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QPainter canvas_painter(&canvas_);
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canvas_painter.drawPixmap(0, 0, canvas_, 1, 0, width() - 1, -1);
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Scope::const_iterator it = s.begin(), end = s.end();
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for (int y = height() - 1; y;) {
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QColor c;
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if (it >= end || *it < .005) {
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c = palette().color(QPalette::Window);
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}
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else if (*it < .05) {
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c.setHsv(95, 255, 255 - static_cast<int>(*it * 4000.0));
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}
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else if (*it < 1.0) {
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c.setHsv(95 - static_cast<int>(*it * 90.0), 255, 255);
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}
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else {
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c = Qt::red;
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}
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canvas_painter.setPen(c);
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canvas_painter.drawPoint(width() - 1, y--);
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if (it < end) ++it;
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}
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canvas_painter.end();
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p.drawPixmap(0, 0, canvas_);
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}
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void Sonogram::transform(Scope &scope) {
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fht_->power2(scope.data());
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fht_->scale(scope.data(), 1.0 / 256);
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scope.resize(fht_->size() / 2);
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}
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void Sonogram::demo(QPainter &p) {
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analyze(p, Scope(fht_->size(), 0), new_frame_);
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}
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