/***************************************************************************
* Copyright (C) 2007 by Ilya Kotov *
* forkotov02@hotmail.ru *
* *
* This program 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 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <QTimer>
#include <QSettings>
#include <QPainter>
#include <QMenu>
#include <QActionGroup>
#include <qmmp/buffer.h>
#include <qmmp/output.h>
#include <math.h>
#include <stdlib.h>
#include "fft.h"
#include "inlines.h"
#include "analyzer.h"
Analyzer::Analyzer (QWidget *parent)
: Visual (parent), m_fps (20)
{
QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
restoreGeometry(settings.value("Analyzer/geometry").toByteArray());
setFixedSize(2*300-30,105);
m_pixmap = QPixmap (75,20);
m_timer = new QTimer (this);
connect(m_timer, SIGNAL (timeout()), this, SLOT (timeout()));
m_nodes.clear();
clear();
setWindowTitle (tr("Qmmp Analyzer"));
double peaks_speed[] = { 0.05, 0.1, 0.2, 0.4, 0.8 };
double analyzer_speed[] = { 1.2, 1.8, 2.2, 2.8, 2.4 };
int intervals[] = { 20 , 40 , 100 , 200 };
m_peaks_falloff =
peaks_speed[settings.value("Analyzer/peaks_falloff", 3).toInt()-1];
m_analyzer_falloff =
analyzer_speed[settings.value("Analyzer/analyzer_falloff", 3).toInt()-1];
m_show_peaks = settings.value("Analyzer/show_peaks", true).toBool();
m_timer->setInterval(intervals[settings.value("Analyzer/refresh_rate", 2).toInt() - 1]);
m_color1.setNamedColor(settings.value("Analyzer/color1", "Green").toString());
m_color2.setNamedColor(settings.value("Analyzer/color2", "Yellow").toString());
m_color3.setNamedColor(settings.value("Analyzer/color3", "Red").toString());
m_bgColor.setNamedColor(settings.value("Analyzer/bg_color", "Black").toString());
m_peakColor.setNamedColor(settings.value("Analyzer/peak_color", "Cyan").toString());
}
Analyzer::~Analyzer()
{
while (!m_nodes.isEmpty())
m_nodes.removeFirst();
}
void Analyzer::clear()
{
while (!m_nodes.isEmpty())
m_nodes.removeFirst();
for (int i = 0; i< 75; ++i)
{
m_intern_vis_data[i] = 0;
m_peaks[i] = 0;
}
update();
}
void Analyzer::add (unsigned char *data, qint64 size, int chan)
{
if (!m_timer->isActive ())
return;
short *l = 0, *r = 0;
qint64 samples = size/chan >> 1;
int frames = samples/512;
for (int i = 0; i < frames; ++i)
{
l = new short[512];
r = 0;
if (chan == 2)
{
r = new short[512];
stereo16_from_stereopcm16 (l, r, (short *) (data + i*4*512), 512);
}
else if (chan == 1)
mono16_from_monopcm16 (l, (short *) (data + i*2*512), 512);
else
{
r = new short[512];
stereo16_from_multichannel(l, r, (short *) (data + i*2*chan*512), 512, chan);
}
m_nodes.append (new VisualNode (l, r, 512));
}
}
void Analyzer::timeout()
{
VisualNode *node = 0;
mutex()->lock ();
while(m_nodes.size() > 5)
{
delete m_nodes.takeFirst();
}
if(!m_nodes.isEmpty())
node = m_nodes.takeFirst();
mutex()->unlock();
if (node)
{
process (node);
delete node;
update();
}
update();
}
void Analyzer::paintEvent (QPaintEvent * e)
{
QPainter painter (this);
painter.fillRect(e->rect(),m_bgColor);
draw(&painter);
}
void Analyzer::hideEvent (QHideEvent *)
{
m_timer->stop();
}
void Analyzer::showEvent (QShowEvent *)
{
m_timer->start();
}
void Analyzer::closeEvent (QCloseEvent *event)
{
//save geometry
QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
settings.setValue("Analyzer/geometry", saveGeometry());
Visual::closeEvent(event); //removes visualization before class deleting
}
bool Analyzer::process (VisualNode *node)
{
static fft_state *state = 0;
if (!state)
state = fft_init();
short dest_l[256];
short dest_r[256];
const int xscale_short[] =
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 11, 15, 20, 27,
36, 47, 62, 82, 107, 141, 184, 255
};
if (node)
{
//i = node->length;
calc_freq (dest_l, node->left);
if (node->right)
calc_freq (dest_r, node->right);
}
else
return FALSE;
const double y_scale = 3.60673760222; /* 20.0 / log(256) */
int yl,yr, j;
for (int i = 0; i < 19; i++)
{
yl = yr = 0;
for (j = xscale_short[i]; j < xscale_short[i + 1]; j++)
{
if (dest_l[j] > yl)
yl = dest_l[j];
if (dest_r[j] > yr && node->right)
yr = dest_r[j];
}
yl >>= 7;
int magnitude_l = 0;
int magnitude_r = 0;
if (node->right)
{
yr >>= 7;
}
if (yl)
{
magnitude_l = int(log (yl) * y_scale);
if (magnitude_l > 15)
magnitude_l = 15;
if (magnitude_l < 0)
magnitude_l = 0;
}
if (yr && node->right)
{
magnitude_r = int(log (yr) * y_scale);
if (magnitude_r > 15)
magnitude_r = 15;
if (magnitude_r < 0)
magnitude_r = 0;
}
m_intern_vis_data[i] -= m_analyzer_falloff;
m_intern_vis_data[i] = magnitude_l > m_intern_vis_data[i]
? magnitude_l : m_intern_vis_data[i];
if (node->right)
{
m_intern_vis_data[37-i] -= m_analyzer_falloff;
m_intern_vis_data[37-i] = magnitude_r > m_intern_vis_data[37-i]
? magnitude_r : m_intern_vis_data[37-i];
}
if (m_show_peaks)
{
m_peaks[i] -= m_peaks_falloff;
m_peaks[i] = magnitude_l > m_peaks[i]
? magnitude_l : m_peaks[i];
if (node->right)
{
m_peaks[37-i] -= m_peaks_falloff;
m_peaks[37-i] = magnitude_r > m_peaks[37-i]
? magnitude_r : m_peaks[37-i];
}
}
}
return true;
}
void Analyzer::draw (QPainter *p)
{
QBrush brush(Qt::SolidPattern);
for (int j = 0; j < 19; ++j)
{
for (int i = 0; i <= m_intern_vis_data[j]; ++i)
{
if (i <= 5)
brush.setColor(m_color1);
else if (i > 5 && i <= 10)
brush.setColor(m_color2);
else
brush.setColor(m_color3);
p->fillRect (j*15+1, height() - i*7, 12, 4, brush);
}
for (int i = 0; i <= m_intern_vis_data[19+j]; ++i)
{
if (i <= 5)
brush.setColor(m_color1);
else if (i > 5 && i <= 10)
brush.setColor(m_color2);
else
brush.setColor(m_color3);
p->fillRect ((j+19)*15+1, height() - i*7, 12, 4, brush);
}
if (m_show_peaks)
{
p->fillRect (j*15+1, height() - int(m_peaks[j])*7, 12, 4, m_peakColor);
p->fillRect ((j+19)*15+1, height() - int(m_peaks[j+19])*7, 12, 4, m_peakColor);
}
}
}
