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-rw-r--r--src/plugins/Visual/analyzer/analyzer.cpp308
1 files changed, 308 insertions, 0 deletions
diff --git a/src/plugins/Visual/analyzer/analyzer.cpp b/src/plugins/Visual/analyzer/analyzer.cpp
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+++ b/src/plugins/Visual/analyzer/analyzer.cpp
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+/***************************************************************************
+ * 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 <buffer.h>
+#include <constants.h>
+#include <output.h>
+#include <math.h>
+#include <stdlib.h>
+
+//#include "skin.h"
+#include "fft.h"
+#include "inlines.h"
+#include "analyzer.h"
+
+
+Analyzer::Analyzer (QWidget *parent)
+ : Visual (parent), m_fps ( 20 )
+{
+ QSettings settings(QDir::homePath()+"/.qmmp/qmmprc", 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 ( Buffer *b, unsigned long w, int c, int p )
+{
+ if (!m_timer->isActive ())
+ return;
+ long len = b->nbytes, cnt;
+ short *l = 0, *r = 0;
+
+ len /= c;
+ len /= ( p / 8 );
+ if ( len > 512 )
+ len = 512;
+ cnt = len;
+
+ if ( c == 2 )
+ {
+ l = new short[len];
+ r = new short[len];
+
+ if ( p == 8 )
+ stereo16_from_stereopcm8 ( l, r, b->data, cnt );
+ else if ( p == 16 )
+ stereo16_from_stereopcm16 ( l, r, ( short * ) b->data, cnt );
+ }
+ else if ( c == 1 )
+ {
+ l = new short[len];
+
+ if ( p == 8 )
+ mono16_from_monopcm8 ( l, b->data, cnt );
+ else if ( p == 16 )
+ mono16_from_monopcm16 ( l, ( short * ) b->data, cnt );
+ }
+ else
+ len = 0;
+
+ if (len)
+ m_nodes.append (new VisualNode (l, r, len, w));
+}
+
+void Analyzer::timeout()
+{
+ VisualNode *node = 0;
+
+ if ( /*playing &&*/ output())
+ {
+ //output()->mutex()->lock ();
+ //long olat = output()->latency();
+ //long owrt = output()->written();
+ //output()->mutex()->unlock();
+
+ //long synctime = owrt < olat ? 0 : owrt - olat;
+
+ mutex()->lock ();
+ VisualNode *prev = 0;
+ while ((!m_nodes.isEmpty()))
+ {
+ node = m_nodes.takeFirst();
+ /*if ( node->offset > synctime )
+ break;*/
+
+ if (prev)
+ delete prev;
+ prev = node;
+ }
+ mutex()->unlock();
+ node = prev;
+ }
+
+ if (!node)
+ return;
+ process (node);
+ delete node;
+ 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(QDir::homePath()+"/.qmmp/qmmprc", 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);
+ }
+ }
+}
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