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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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QAUDIOFORMAT_H
#define QAUDIOFORMAT_H
#include <QtCore/qobject.h>
#include <QtCore/qshareddata.h>
#include <QtMultimedia/qtmultimediaglobal.h>
QT_BEGIN_NAMESPACE
class QAudioFormatPrivate;
class QAudioFormat
{
public:
enum SampleFormat {
Unknown,
UInt8,
Int16,
Int32,
Float,
NSampleFormats
};
constexpr bool isValid() const noexcept
{
return m_sampleRate > 0 && m_channelCount > 0 && m_sampleFormat != Unknown;
}
constexpr void setSampleRate(int sampleRate) noexcept { m_sampleRate = sampleRate; }
constexpr int sampleRate() const noexcept { return m_sampleRate; }
constexpr void setChannelCount(int channelCount) noexcept { m_channelCount = channelCount; }
constexpr int channelCount() const noexcept { return m_channelCount; }
constexpr void setSampleFormat(SampleFormat f) noexcept { m_sampleFormat = f; }
constexpr SampleFormat sampleFormat() const noexcept { return m_sampleFormat; }
// Helper functions
Q_MULTIMEDIA_EXPORT qint32 bytesForDuration(qint64 duration) const;
Q_MULTIMEDIA_EXPORT qint64 durationForBytes(qint32 byteCount) const;
Q_MULTIMEDIA_EXPORT qint32 bytesForFrames(qint32 frameCount) const;
Q_MULTIMEDIA_EXPORT qint32 framesForBytes(qint32 byteCount) const;
Q_MULTIMEDIA_EXPORT qint32 framesForDuration(qint64 duration) const;
Q_MULTIMEDIA_EXPORT qint64 durationForFrames(qint32 frameCount) const;
constexpr int bytesPerFrame() const { return bytesPerSample()*channelCount(); }
constexpr int bytesPerSample() const noexcept
{
switch (m_sampleFormat) {
case Unknown:
case NSampleFormats: return 0;
case UInt8: return 1;
case Int16: return 2;
case Int32:
case Float: return 4;
}
return 0;
}
Q_MULTIMEDIA_EXPORT float normalizedSampleValue(const void *sample) const;
friend bool operator==(const QAudioFormat &a, const QAudioFormat &b)
{
return a.m_sampleRate == b.m_sampleRate &&
a.m_channelCount == b.m_channelCount &&
a.m_sampleFormat == b.m_sampleFormat;
}
friend bool operator!=(const QAudioFormat &a, const QAudioFormat &b)
{
return !(a == b);
}
private:
SampleFormat m_sampleFormat = SampleFormat::Unknown;
int m_sampleRate = 0;
short m_channelCount = 0;
short bitfields = 0;
quint64 reserved = 0;
};
#ifndef QT_NO_DEBUG_STREAM
Q_MULTIMEDIA_EXPORT QDebug operator<<(QDebug, const QAudioFormat &);
Q_MULTIMEDIA_EXPORT QDebug operator<<(QDebug, QAudioFormat::SampleFormat);
#endif
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QAudioFormat)
#endif // QAUDIOFORMAT_H
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