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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
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**
**
****************************************************************************/
//
// 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/qelapsedtimer.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) override;
QIODevice* start() override;
void stop() override;
void reset() override;
void suspend() override;
void resume() override;
int bytesFree() const override;
int periodSize() const override;
void setBufferSize(int value) override;
int bufferSize() const override;
void setNotifyInterval(int milliSeconds) override;
int notifyInterval() const override;
qint64 processedUSecs() const override;
qint64 elapsedUSecs() const override;
QAudio::Error error() const override;
QAudio::State state() const override;
void setFormat(const QAudioFormat& fmt) override;
QAudioFormat format() const override;
void setVolume(qreal) override;
qreal volume() const override;
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;
QElapsedTimer timeStamp;
QElapsedTimer 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) override;
qint64 writeData(const char* data, qint64 len) override;
private:
QAlsaAudioOutput *audioDevice;
};
QT_END_NAMESPACE
#endif
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