From e2de64d6f1beb9e492daf5b886e19933c1fa41dd Mon Sep 17 00:00:00 2001
From: toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>
Date: Wed, 25 Nov 2009 17:56:58 +0000
Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
 BUG:215923

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
---
 noatun/modules/voiceprint/voiceprint.cpp | 126 +++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 noatun/modules/voiceprint/voiceprint.cpp

(limited to 'noatun/modules/voiceprint/voiceprint.cpp')

diff --git a/noatun/modules/voiceprint/voiceprint.cpp b/noatun/modules/voiceprint/voiceprint.cpp
new file mode 100644
index 00000000..4f6c7aea
--- /dev/null
+++ b/noatun/modules/voiceprint/voiceprint.cpp
@@ -0,0 +1,126 @@
+#include "voiceprint.h"
+#include <noatun/player.h>
+#include <noatun/app.h>
+#include <math.h>
+#include <qpainter.h>
+#include "prefs.h"
+#include <klocale.h>
+#include <stdio.h>
+
+extern "C"
+{
+	KDE_EXPORT Plugin *create_plugin()
+	{
+		return new VoicePrint();
+	}
+}
+
+VoicePrint *VoicePrint::voicePrint=0;
+
+VoicePrint::VoicePrint() : QWidget(0,0,WRepaintNoErase), MonoFFTScope(50), Plugin()
+{
+	voicePrint=this;
+	mOffset=0;
+	mSegmentWidth=2;
+	setCaption(i18n("Voiceprint"));
+	resize(320, 240);
+	MonoFFTScope::start();
+	show();
+	setMaximumHeight(1024);
+}
+
+VoicePrint::~VoicePrint()
+{
+}
+
+void VoicePrint::init()
+{
+	Prefs *p=new Prefs(this); 
+	p->reopen();
+	p->save();
+	resizeEvent(0);
+}
+
+void VoicePrint::setColors(const QColor &bg, const QColor &fg, const QColor &l)
+{
+	mProgress=l;
+	mLowColor=bg.rgb();
+	mHighColor=fg.rgb();
+	setBackgroundColor(mLowColor);
+}
+
+void VoicePrint::closeEvent(QCloseEvent *)
+{
+	unload();
+}
+
+void VoicePrint::resizeEvent(QResizeEvent *)
+{
+	mOffset=0;
+	mBuffer.resize(size());
+	QPainter paint(&mBuffer);
+	paint.fillRect(QRect(0,0, QWidget::width(), height()), QColor(mLowColor));
+	setBands(magic(height()/mSegmentWidth));
+}
+
+#define COLOR(color, bgcolor, fgcolor, foctet) \
+        (int)( color(bgcolor) + (foctet) * (color(fgcolor) - color(bgcolor)) )
+
+inline static QRgb averageByIntensity(QRgb bgcolor, QRgb fgcolor, int octet)
+{
+	float foctet = octet / 255.0;
+
+	return qRgb(COLOR(qRed, bgcolor, fgcolor, foctet),
+	            COLOR(qGreen, bgcolor, fgcolor, foctet),
+	            COLOR(qBlue, bgcolor, fgcolor, foctet)
+	           );
+}
+
+#undef COLOR
+
+void VoicePrint::paintEvent(QPaintEvent *e)
+{
+	bitBlt(this, e->rect().topLeft(), &mBuffer, e->rect(), Qt::CopyROP);
+}
+
+void VoicePrint::scopeEvent(float *data, int bands)
+{
+	// save cpu
+	if(isHidden()) return;
+
+	QPainter paint(&mBuffer);
+	// each square has a width of mSegmentWidth
+	float brightness = float(bands * mSegmentWidth);
+	for (int i=0; i<bands ; i++)
+	{
+		float b=data[bands-i-1]+1.0;
+		// the more bands there are, the dimmer each becomes
+		b=log10(b)/log(2) * 16 * brightness;
+		int band=int(b);
+		if (band>255) band=255;
+		else if (band<0) band=0;
+		
+		QColor area(averageByIntensity(mLowColor, mHighColor, band));
+
+		int bandTop=i*height()/bands, bandBottom=(i+1)*height()/bands;
+		paint.fillRect(mOffset, bandTop, mSegmentWidth,bandBottom-bandTop,area);
+	}
+	
+	int newOffset = mOffset+mSegmentWidth;
+	if (newOffset>QWidget::width()) newOffset=0;
+	paint.fillRect(newOffset, 0, mSegmentWidth, height(), mProgress);
+
+	// redraw changes with the minimum amount of work
+	if(newOffset != 0)
+	{
+		repaint(mOffset,0,mSegmentWidth*2,height(),false);
+	}
+	else
+	{
+		repaint(mOffset,0,mSegmentWidth,height(),false);
+		repaint(newOffset,0,mSegmentWidth,height(),false);
+	}
+	mOffset = newOffset;
+}
+
+#include "voiceprint.moc"
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