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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 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);
~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;
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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