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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
//
// 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 QWINDOWSAUDIOOUTPUT_H
#define QWINDOWSAUDIOOUTPUT_H
#include "qwindowsaudioutils_p.h"
#include <QtCore/qdebug.h>
#include <QtCore/qelapsedtimer.h>
#include <QtCore/qiodevice.h>
#include <QtCore/qstring.h>
#include <QtCore/qstringlist.h>
#include <QtCore/qdatetime.h>
#include <QtCore/qmutex.h>
#include <QtCore/qtimer.h>
#include <QtMultimedia/qaudio.h>
#include <QtMultimedia/qaudiodevice.h>
#include <private/qaudiosystem_p.h>
#include <qwindowsiupointer_p.h>
#include <qwindowsresampler_p.h>
#include <queue>
#include <utility>
#include <audioclient.h>
#include <mmdeviceapi.h>
// For compat with 4.6
#if !defined(QT_WIN_CALLBACK)
# if defined(Q_CC_MINGW)
# define QT_WIN_CALLBACK CALLBACK __attribute__ ((force_align_arg_pointer))
# else
# define QT_WIN_CALLBACK CALLBACK
# endif
#endif
QT_BEGIN_NAMESPACE
class QWindowsResampler;
class QWindowsAudioSink : public QPlatformAudioSink
{
Q_OBJECT
public:
QWindowsAudioSink(QWindowsIUPointer<IMMDevice> device, QObject *parent);
~QWindowsAudioSink();
void setFormat(const QAudioFormat& fmt) override;
QAudioFormat format() const override;
QIODevice* start() override;
void start(QIODevice* device) override;
void stop() override { close(); }
void reset() override;
void suspend() override;
void resume() override;
qsizetype bytesFree() const override;
void setBufferSize(qsizetype value) override;
qsizetype bufferSize() const override { return m_bufferSize; }
qint64 processedUSecs() const override;
QAudio::Error error() const override { return errorState; }
QAudio::State state() const override { return deviceState; }
void setVolume(qreal) override;
qreal volume() const override { return m_volume; }
private:
friend class OutputPrivate;
qint64 write(const char *data, qint64 len);
qint64 push(const char *data, qint64 len);
bool open();
void close();
void deviceStateChange(QAudio::State, QAudio::Error);
void pullSource();
qint64 remainingPlayTimeUs();
QAudioFormat m_format;
QAudio::Error errorState = QAudio::NoError;
QAudio::State deviceState = QAudio::StoppedState;
qsizetype m_bufferSize = 0;
qreal m_volume = 1.0;
QTimer *m_timer = nullptr;
QScopedPointer<QIODevice> m_pushSource;
QIODevice *m_pullSource = nullptr;
QWindowsIUPointer<IMMDevice> m_device;
QWindowsIUPointer<IAudioClient> m_audioClient;
QWindowsIUPointer<IAudioRenderClient> m_renderClient;
QWindowsResampler m_resampler;
};
QT_END_NAMESPACE
#endif // QWINDOWSAUDIOOUTPUT_H
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