/***************************************************************************
* Copyright (C) 2012-2015 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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <QTimer>
#include <QSettings>
#include <QPainter>
#include <QMenu>
#include <QActionGroup>
#include <QLabel>
#include <qmmp/qmmp.h>
#include <qmmp/buffer.h>
#include <math.h>
#include <stdlib.h>
#include "fft.h"
#include "inlines.h"
#include "qsuianalyzer.h"
#define VISUAL_NODE_SIZE 512 //samples
#define VISUAL_BUFFER_SIZE (5*VISUAL_NODE_SIZE)
QSUiAnalyzer::QSUiAnalyzer (QWidget *parent) : Visual (parent)
{
m_intern_vis_data = 0;
m_peaks = 0;
m_x_scale = 0;
m_buffer_at = 0;
m_rows = 0;
m_cols = 0;
m_offset = 0;
m_update = false;
m_show_cover = false;
m_running = false;
m_pixLabel = new QLabel(this);
createMenu();
m_timer = new QTimer (this);
connect(m_timer, SIGNAL (timeout()), this, SLOT (timeout()));
m_left_buffer = new float[VISUAL_BUFFER_SIZE];
m_right_buffer = new float[VISUAL_BUFFER_SIZE];
readSettings();
clear();
}
QSUiAnalyzer::~QSUiAnalyzer()
{
delete [] m_left_buffer;
delete [] m_right_buffer;
if(m_peaks)
delete [] m_peaks;
if(m_intern_vis_data)
delete [] m_intern_vis_data;
if(m_x_scale)
delete [] m_x_scale;
}
void QSUiAnalyzer::clear()
{
m_buffer_at = 0;
m_rows = 0;
m_cols = 0;
update();
}
void QSUiAnalyzer::clearCover()
{
m_cover = QPixmap();
updateCover();
update();
}
QSize QSUiAnalyzer::sizeHint() const
{
return QSize(200, 100);
}
void QSUiAnalyzer::add (float *data, size_t samples, int chan)
{
if (!m_timer->isActive ())
return;
if(VISUAL_BUFFER_SIZE == m_buffer_at)
{
m_buffer_at -= VISUAL_NODE_SIZE;
memmove(m_left_buffer, m_left_buffer + VISUAL_NODE_SIZE, m_buffer_at * sizeof(float));
memmove(m_right_buffer, m_right_buffer + VISUAL_NODE_SIZE, m_buffer_at * sizeof(float));
return;
}
int frames = qMin(int(samples/chan), VISUAL_BUFFER_SIZE - m_buffer_at);
stereo_from_multichannel(m_left_buffer + m_buffer_at,
m_right_buffer + m_buffer_at, data, frames, chan);
m_buffer_at += frames;
}
void QSUiAnalyzer::setCover(const QPixmap &pixmap)
{
m_cover = pixmap;
updateCover();
}
void QSUiAnalyzer::timeout()
{
mutex()->lock();
if(m_buffer_at < VISUAL_NODE_SIZE)
{
mutex()->unlock ();
return;
}
process (m_left_buffer, m_right_buffer);
m_buffer_at -= VISUAL_NODE_SIZE;
memmove(m_left_buffer, m_left_buffer + VISUAL_NODE_SIZE, m_buffer_at * sizeof(float));
memmove(m_right_buffer, m_right_buffer + VISUAL_NODE_SIZE, m_buffer_at * sizeof(float));
mutex()->unlock ();
update();
}
void QSUiAnalyzer::paintEvent (QPaintEvent * e)
{
QPainter painter (this);
painter.fillRect(e->rect(),m_bgColor);
draw(&painter);
}
void QSUiAnalyzer::hideEvent (QHideEvent *)
{
m_timer->stop();
}
void QSUiAnalyzer::showEvent (QShowEvent *)
{
if(m_running)
m_timer->start();
}
void QSUiAnalyzer::resizeEvent(QResizeEvent *)
{
updateCover();
}
void QSUiAnalyzer::process (float *left, float *right)
{
int rows = qMax((height() - 2) / m_cell_size.height(),2);
int cols = qMax((width() - m_offset - 2) / m_cell_size.width(),1);
if(m_rows != rows || m_cols != cols)
{
m_rows = rows;
m_cols = cols;
if(m_peaks)
delete [] m_peaks;
if(m_intern_vis_data)
delete [] m_intern_vis_data;
if(m_x_scale)
delete [] m_x_scale;
m_peaks = new double[m_cols];
m_intern_vis_data = new double[m_cols];
m_x_scale = new int[m_cols + 1];
for(int i = 0; i < m_cols; ++i)
{
m_peaks[i] = 0;
m_intern_vis_data[i] = 0;
}
for(int i = 0; i < m_cols + 1; ++i)
m_x_scale[i] = pow(pow(255.0, 1.0 / m_cols), i);
}
short dest[256];
short y;
int k, magnitude;
float data[512];
for(int i = 0; i < VISUAL_NODE_SIZE; ++i)
{
data[i] = left[i] / 2 + right[i] / 2;
data[i] = qBound(-1.0f, data[i], 1.0f);
}
calc_freq (dest, data);
double y_scale = (double) 1.25 * m_rows / log(256);
for (int i = 0; i < m_cols; i++)
{
y = 0;
magnitude = 0;
if(m_x_scale[i] == m_x_scale[i + 1])
{
y = dest[i];
}
for (k = m_x_scale[i]; k < m_x_scale[i + 1]; k++)
{
y = qMax(dest[k], y);
}
y >>= 7; //256
if (y)
{
magnitude = int(log (y) * y_scale);
magnitude = qBound(0, magnitude, m_rows);
}
m_intern_vis_data[i] -= m_analyzer_falloff * m_rows / 15;
m_intern_vis_data[i] = magnitude > m_intern_vis_data[i] ? magnitude : m_intern_vis_data[i];
if (m_show_peaks)
{
m_peaks[i] -= m_peaks_falloff * m_rows / 15;
m_peaks[i] = magnitude > m_peaks[i] ? magnitude : m_peaks[i];
}
}
}
void QSUiAnalyzer::draw (QPainter *p)
{
QBrush brush(Qt::SolidPattern);
int x = 0;
for (int j = 0; j < m_cols; ++j)
{
x = m_offset + j * m_cell_size.width() + 1;
for (int i = 0; i <= m_intern_vis_data[j]; ++i)
{
if (i <= m_rows/3)
brush.setColor(m_color1);
else if (i > m_rows/3 && i <= 2 * m_rows / 3)
brush.setColor(m_color2);
else
brush.setColor(m_color3);
p->fillRect (x, height() - i * m_cell_size.height(),
m_cell_size.width() - 1, m_cell_size.height() - 4, brush);
}
if (m_show_peaks)
{
p->fillRect (x, height() - int(m_peaks[j]) * m_cell_size.height(),
m_cell_size.width() - 1, m_cell_size.height() - 4, m_peakColor);
}
}
}
void QSUiAnalyzer::createMenu()
{
m_menu = new QMenu (this);
connect(m_menu, SIGNAL(triggered (QAction *)),SLOT(writeSettings()));
connect(m_menu, SIGNAL(triggered (QAction *)),SLOT(readSettings()));
m_coverAction = m_menu->addAction(tr("Cover"));
m_coverAction->setCheckable(true);
m_peaksAction = m_menu->addAction(tr("Peaks"));
m_peaksAction->setCheckable(true);
QMenu *refreshRate = m_menu->addMenu(tr("Refresh Rate"));
m_fpsGroup = new QActionGroup(this);
m_fpsGroup->setExclusive(true);
m_fpsGroup->addAction(tr("50 fps"))->setData(50);
m_fpsGroup->addAction(tr("25 fps"))->setData(25);
m_fpsGroup->addAction(tr("10 fps"))->setData(10);
m_fpsGroup->addAction(tr("5 fps"))->setData(5);
foreach(QAction *act, m_fpsGroup->actions ())
{
act->setCheckable(true);
refreshRate->addAction(act);
}
QMenu *analyzerFalloff = m_menu->addMenu(tr("Analyzer Falloff"));
m_analyzerFalloffGroup = new QActionGroup(this);
m_analyzerFalloffGroup->setExclusive(true);
m_analyzerFalloffGroup->addAction(tr("Slowest"))->setData(1.2);
m_analyzerFalloffGroup->addAction(tr("Slow"))->setData(1.8);
m_analyzerFalloffGroup->addAction(tr("Medium"))->setData(2.2);
m_analyzerFalloffGroup->addAction(tr("Fast"))->setData(2.4);
m_analyzerFalloffGroup->addAction(tr("Fastest"))->setData(2.8);
foreach(QAction *act, m_analyzerFalloffGroup->actions ())
{
act->setCheckable(true);
analyzerFalloff->addAction(act);
}
QMenu *peaksFalloff = m_menu->addMenu(tr("Peaks Falloff"));
m_peaksFalloffGroup = new QActionGroup(this);
m_peaksFalloffGroup->setExclusive(true);
m_peaksFalloffGroup->addAction(tr("Slowest"))->setData(0.05);
m_peaksFalloffGroup->addAction(tr("Slow"))->setData(0.1);
m_peaksFalloffGroup->addAction(tr("Medium"))->setData(0.2);
m_peaksFalloffGroup->addAction(tr("Fast"))->setData(0.4);
m_peaksFalloffGroup->addAction(tr("Fastest"))->setData(0.8);
foreach(QAction *act, m_peaksFalloffGroup->actions ())
{
act->setCheckable(true);
peaksFalloff->addAction(act);
}
update();
}
void QSUiAnalyzer::updateCover()
{
if(m_show_cover && !m_cover.isNull())
{
m_offset = height();
m_pixLabel->setGeometry(10,10, height() - 20, height() - 20);
m_pixLabel->setPixmap(m_cover.scaled(m_pixLabel->size(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
m_pixLabel->show();
}
else
{
m_offset = 0;
m_pixLabel->hide();
}
}
void QSUiAnalyzer::mousePressEvent (QMouseEvent *e)
{
if (e->button() == Qt::RightButton)
m_menu->exec(e->globalPos());
}
void QSUiAnalyzer::readSettings()
{
QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
settings.beginGroup("Simple");
m_peaks_falloff = settings.value("vis_peaks_falloff", 0.2).toDouble();
m_analyzer_falloff = settings.value("vis_analyzer_falloff", 2.2).toDouble();
m_show_peaks = settings.value("vis_show_peaks", true).toBool();
m_show_cover = settings.value("vis_show_cover", true).toBool();
m_timer->setInterval(1000 / settings.value("vis_refresh_rate", 25).toInt());
m_color1.setNamedColor(settings.value("vis_color1", "#BECBFF").toString());
m_color2.setNamedColor(settings.value("vis_color2", "#BECBFF").toString());
m_color3.setNamedColor(settings.value("vis_color3", "#BECBFF").toString());
m_bgColor.setNamedColor(settings.value("vis_bg_color", "Black").toString());
m_peakColor.setNamedColor(settings.value("vis_peak_color", "#DDDDDD").toString());
m_cell_size = QSize(14, 8);
if(!m_update)
{
m_update = true;
m_coverAction->setChecked(m_show_cover);
m_peaksAction->setChecked(m_show_peaks);
foreach(QAction *act, m_fpsGroup->actions ())
{
if (m_timer->interval() == 1000 / act->data().toInt())
act->setChecked(true);
}
foreach(QAction *act, m_peaksFalloffGroup->actions ())
{
if (m_peaks_falloff == act->data().toDouble())
act->setChecked(true);
}
foreach(QAction *act, m_analyzerFalloffGroup->actions ())
{
if (m_analyzer_falloff == act->data().toDouble())
act->setChecked(true);
}
}
updateCover();
settings.endGroup();
}
void QSUiAnalyzer::writeSettings()
{
QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
settings.beginGroup("Simple");
QAction *act = m_fpsGroup->checkedAction ();
settings.setValue("vis_refresh_rate", act ? act->data().toInt() : 25);
act = m_peaksFalloffGroup->checkedAction ();
settings.setValue("vis_peaks_falloff", act ? act->data().toDouble() : 0.2);
act = m_analyzerFalloffGroup->checkedAction ();
settings.setValue("vis_analyzer_falloff", act ? act->data().toDouble() : 2.2);
settings.setValue("vis_show_peaks", m_peaksAction->isChecked());
settings.setValue("vis_show_cover", m_coverAction->isChecked());
settings.endGroup();
}
void QSUiAnalyzer::start()
{
m_running = true;
if(isVisible())
m_timer->start();
}
void QSUiAnalyzer::stop()
{
m_running = false;
m_timer->stop();
}
