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92 lines
1.7 KiB
92 lines
1.7 KiB
//
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//
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// C++ Implementation: Sonogram
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//
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// Description:
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//
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//
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// Author: Melchior FRANZ <mfranz@kde.org>, (C) 2004
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//
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// Copyright: See COPYING file that comes with this distribution
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//
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//
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#include <tqpainter.h>
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#include "sonogram.h"
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Sonogram::Sonogram(TQWidget *parent) :
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Analyzer::Base2D(parent, 16, 9)
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{
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}
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Sonogram::~Sonogram()
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{
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}
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void Sonogram::init()
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{
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eraseCanvas();
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}
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void Sonogram::resizeEvent(TQResizeEvent *e)
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{
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TQWidget::resizeEvent(e);
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canvas()->resize(size());
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background()->resize(size());
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//only for gcc < 4.0
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#if !( __GNUC__ > 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ >= 0 ) )
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resizeForBands(height() < 128 ? 128 : height());
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#endif
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background()->fill(backgroundColor());
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bitBlt(canvas(), 0, 0, background());
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bitBlt(this, 0, 0, background());
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}
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void Sonogram::analyze(const Scope &s)
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{
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int x = width() - 1;
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TQColor c;
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TQPainter p(canvas());
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bitBlt(canvas(), 0, 0, canvas(), 1, 0, x, height());
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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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if (it >= end || *it < .005)
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c = backgroundColor();
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else if (*it < .05)
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c.setHsv(95, 255, 255 - int(*it * 4000.0));
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else if (*it < 1.0)
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c.setHsv(95 - int(*it * 90.0), 255, 255);
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else
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c = TQt::red;
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p.setPen(c);
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p.drawPoint(x, y--);
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if (it < end)
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++it;
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}
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}
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void Sonogram::transform(Scope &scope)
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{
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float *front = static_cast<float*>(&scope.front());
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m_fht->power2(front);
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m_fht->scale(front, 1.0 / 256);
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scope.resize( m_fht->size() / 2 );
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}
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void Sonogram::demo()
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{
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analyze(Scope(m_fht->size(), 0));
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}
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