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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QOPENSLESENGINE_H
#define QOPENSLESENGINE_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qglobal.h>
#include <qaudio.h>
#include <qlist.h>
#include <qaudioformat.h>
#include <qaudiodevice.h>
#include <SLES/OpenSLES_Android.h>
QT_BEGIN_NAMESPACE
class QOpenSLESEngine
{
public:
enum OutputValue { FramesPerBuffer, SampleRate };
QOpenSLESEngine();
~QOpenSLESEngine();
static QOpenSLESEngine *instance();
SLEngineItf slEngine() const { return m_engine; }
static SLAndroidDataFormat_PCM_EX audioFormatToSLFormatPCM(const QAudioFormat &format);
static QList<QAudioDevice> availableDevices(QAudioDevice::Mode mode);
static bool setAudioOutput(const QByteArray &deviceId);
QList<int> supportedChannelCounts(QAudioDevice::Mode mode) const;
QList<int> supportedSampleRates(QAudioDevice::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(SLAndroidDataFormat_PCM_EX 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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