Qmmp
/usr/src/RPM/BUILD/qmmp-0.7-svn/src/qmmp/volumecontrol_p.h
00001 /***************************************************************************
00002  *   Copyright (C) 2008-2012 by Ilya Kotov                                 *
00003  *   forkotov02@hotmail.ru                                                 *
00004  *                                                                         *
00005  *   This program is free software; you can redistribute it and/or modify  *
00006  *   it under the terms of the GNU General Public License as published by  *
00007  *   the Free Software Foundation; either version 2 of the License, or     *
00008  *   (at your option) any later version.                                   *
00009  *                                                                         *
00010  *   This program is distributed in the hope that it will be useful,       *
00011  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00012  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
00013  *   GNU General Public License for more details.                          *
00014  *                                                                         *
00015  *   You should have received a copy of the GNU General Public License     *
00016  *   along with this program; if not, write to the                         *
00017  *   Free Software Foundation, Inc.,                                       *
00018  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
00019  ***************************************************************************/
00020 #ifndef VOLUMECONTROL_P_H
00021 #define VOLUMECONTROL_P_H
00022 
00023 #include <QObject>
00024 #include "qmmp.h"
00025 #include "volume.h"
00026 #include "buffer.h"
00027 
00028 class QTimer;
00029 class SoftwareVolume;
00030 
00035 class VolumeControl : public QObject
00036 {
00037     Q_OBJECT
00038 public:
00043     VolumeControl(QObject *parent = 0);
00047     ~VolumeControl();
00054     void setVolume(int left, int right);
00058     int left();
00062     int right();
00063 
00064 signals:
00070     void volumeChanged(int left, int right);
00071 
00072 public slots:
00076     void checkVolume();
00080     void reload();
00081 
00082 private:
00083     int m_left, m_right;
00084     bool m_prev_block;
00085     Volume *m_volume;
00086     QTimer *m_timer;
00087 
00088 };
00093 class SoftwareVolume : public Volume
00094 {
00095 public:
00096     SoftwareVolume();
00097     ~SoftwareVolume();
00098 
00099     void setVolume(int channel, int value);
00100     int volume(int channel);
00101     void changeVolume(Buffer *b, int chan, Qmmp::AudioFormat format);
00102 
00103     static SoftwareVolume *instance();
00104 
00105 private:
00106     int m_left, m_right;
00107     double m_scaleLeft, m_scaleRight;
00108     static SoftwareVolume *m_instance;
00109 };
00110 
00111 #endif
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