1 files changed, 75 insertions, 0 deletions
diff --git a/src/qmmp/softwarevolume.cpp b/src/qmmp/softwarevolume.cpp
new file mode 100644
index 000000000..ed4343fb4
--- /dev/null
+++ b/src/qmmp/softwarevolume.cpp
@@ -0,0 +1,75 @@
+/***************************************************************************
+ *   Copyright (C) 2008-2019 by Ilya Kotov                                 *
+ *   forkotov02@ya.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 <QSettings>
+#include "buffer.h"
+#include "qmmp.h"
+#include "softwarevolume_p.h"
+
+SoftwareVolume::SoftwareVolume()
+{
+    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
+    m_left = settings.value("Volume/left", 80).toInt();
+    m_right = settings.value("Volume/right", 80).toInt();
+    m_scaleLeft = (double)m_left/100.0;
+    m_scaleRight = (double)m_right/100.0;
+}
+
+SoftwareVolume::~SoftwareVolume()
+{
+    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
+    settings.setValue("Volume/left", m_left);
+    settings.setValue("Volume/right", m_right);
+}
+
+void SoftwareVolume::setVolume(const VolumeSettings &v)
+{
+    m_left = v.left;
+    m_right = v.right;
+    m_scaleLeft = (double)m_left/100.0;
+    m_scaleRight = (double)m_right/100.0;
+}
+
+VolumeSettings SoftwareVolume::volume() const
+{
+    VolumeSettings v;
+    v.left = m_left;
+    v.right = m_right;
+    return v;
+}
+
+void SoftwareVolume::changeVolume(Buffer *b, int chan)
+{
+    if(chan == 1)
+    {
+        for(size_t i = 0; i < b->samples; ++i)
+        {
+            b->data[i] *= qMax(m_scaleLeft, m_scaleRight);
+        }
+    }
+    else
+    {
+        for(size_t i = 0; i < b->samples; i+=2)
+        {
+            b->data[i] *= m_scaleLeft;
+            b->data[i+1] *= m_scaleRight;
+        }
+    }
+}