All Classes Functions Properties
volumepeakdetector.h
/*
* Copyright (C) 2012, 2013 Canonical, Ltd.
*
* 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; version 3.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef VOLUMEPEAKDETECTOR_H
#define VOLUMEPEAKDETECTOR_H
#include <QObject>
#include <QThread>
#include <pulse/pulseaudio.h>
class PulseAudioVolumePeakDetector : public QObject
{
Q_OBJECT
public:
PulseAudioVolumePeakDetector();
int nAccumulatedValuesLimit() const;
void setNAccumulatedValuesLimit(int limit);
void startStream();
void processData();
void quit();
public Q_SLOTS:
void start();
Q_SIGNALS:
void newPeak(float value);
private:
float m_accumulatedValue;
int m_nAccumulatedValues;
int m_accumulatedValuesLimit;
pa_context *m_context;
pa_mainloop_api *m_mainloop_api;
pa_stream *m_stream;
};
class VolumePeakDetector : public QObject
{
Q_OBJECT
Q_PROPERTY(bool enabled READ enabled WRITE setEnabled)
Q_PROPERTY(int desiredInterval READ desiredInterval WRITE setDesiredInterval)
public:
VolumePeakDetector();
bool enabled() const;
void setEnabled(int enabled);
int desiredInterval() const;
void setDesiredInterval(int interval);
Q_SIGNALS:
void newPeak(float volume);
private:
QThread m_thread;
PulseAudioVolumePeakDetector m_volumeDetector;
};
#endif