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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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**
**
****************************************************************************/
#ifndef QOPENSLESENGINE_H
#define QOPENSLESENGINE_H
#include <qglobal.h>
#include <qaudio.h>
#include <qlist.h>
#include <qaudioformat.h>
#include <SLES/OpenSLES.h>
QT_BEGIN_NAMESPACE
class QOpenSLESEngine
{
public:
enum OutputValue { FramesPerBuffer, SampleRate };
QOpenSLESEngine();
~QOpenSLESEngine();
static QOpenSLESEngine *instance();
SLEngineItf slEngine() const { return m_engine; }
static SLDataFormat_PCM audioFormatToSLFormatPCM(const QAudioFormat &format);
QByteArray defaultDevice(QAudio::Mode mode) const;
QList<QByteArray> availableDevices(QAudio::Mode mode) const;
QList<int> supportedChannelCounts(QAudio::Mode mode) const;
QList<int> supportedSampleRates(QAudio::Mode mode) const;
static int getOutputValue(OutputValue type, int defaultValue = 0);
static int getDefaultBufferSize(const QAudioFormat &format);
static int getLowLatencyBufferSize(const QAudioFormat &format);
static bool supportsLowLatency();
static bool printDebugInfo();
private:
void checkSupportedInputFormats();
bool inputFormatIsSupported(SLDataFormat_PCM format);
SLObjectItf m_engineObject;
SLEngineItf m_engine;
QList<int> m_supportedInputChannelCounts;
QList<int> m_supportedInputSampleRates;
bool m_checkedInputFormats;
};
QT_END_NAMESPACE
#endif // QOPENSLESENGINE_H
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