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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#ifndef QAUDIOOUTPUTALSA_H
#define QAUDIOOUTPUTALSA_H
#include <alsa/asoundlib.h>
#include <QtCore/qfile.h>
#include <QtCore/qdebug.h>
#include <QtCore/qtimer.h>
#include <QtCore/qstring.h>
#include <QtCore/qstringlist.h>
#include <QtCore/qdatetime.h>
#include <QtCore/qiodevice.h>
#include <QtMultimedia/qaudio.h>
#include <QtMultimedia/qaudiodeviceinfo.h>
#include <QtMultimedia/qaudiosystem.h>
QT_BEGIN_NAMESPACE
class QAlsaAudioOutput : public QAbstractAudioOutput
{
friend class AlsaOutputPrivate;
Q_OBJECT
public:
QAlsaAudioOutput(const QByteArray &device);
~QAlsaAudioOutput();
qint64 write( const char *data, qint64 len );
void start(QIODevice* device);
QIODevice* start();
void stop();
void reset();
void suspend();
void resume();
int bytesFree() const;
int periodSize() const;
void setBufferSize(int value);
int bufferSize() const;
void setNotifyInterval(int milliSeconds);
int notifyInterval() const;
qint64 processedUSecs() const;
qint64 elapsedUSecs() const;
QAudio::Error error() const;
QAudio::State state() const;
void setFormat(const QAudioFormat& fmt);
QAudioFormat format() const;
void setVolume(qreal);
qreal volume() const;
QIODevice* audioSource;
QAudioFormat settings;
QAudio::Error errorState;
QAudio::State deviceState;
private slots:
void userFeed();
bool deviceReady();
signals:
void processMore();
private:
bool opened;
bool pullMode;
bool resuming;
int buffer_size;
int period_size;
int intervalTime;
qint64 totalTimeValue;
unsigned int buffer_time;
unsigned int period_time;
snd_pcm_uframes_t buffer_frames;
snd_pcm_uframes_t period_frames;
int xrun_recovery(int err);
int setFormat();
bool open();
void close();
QTimer* timer;
QByteArray m_device;
int bytesAvailable;
QTime timeStamp;
QTime clockStamp;
qint64 elapsedTimeOffset;
char* audioBuffer;
snd_pcm_t* handle;
snd_pcm_access_t access;
snd_pcm_format_t pcmformat;
snd_pcm_hw_params_t *hwparams;
qreal m_volume;
};
class AlsaOutputPrivate : public QIODevice
{
friend class QAlsaAudioOutput;
Q_OBJECT
public:
AlsaOutputPrivate(QAlsaAudioOutput* audio);
~AlsaOutputPrivate();
qint64 readData( char* data, qint64 len);
qint64 writeData(const char* data, qint64 len);
private:
QAlsaAudioOutput *audioDevice;
};
QT_END_NAMESPACE
#endif
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