qaudiobuffer.cpp

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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
 
#include "qaudiobuffer.h"
 
#include <QObject>
#include <QDebug>
 
QT_BEGIN_NAMESPACE
 
class QAudioBufferPrivate : public QSharedData
{
public:
    QAudioBufferPrivate(const QAudioFormat &f, const QByteArray &d, qint64 start)
        : format(f), data(d), startTime(start)
    {
    }
 
    QAudioFormat format;
    QByteArray data;
    qint64 startTime;
};
 
QT_DEFINE_QESDP_SPECIALIZATION_DTOR(QAudioBufferPrivate);
 
QAudioBuffer::QAudioBuffer() noexcept = default;
 
QAudioBuffer::QAudioBuffer(const QAudioBuffer &other) noexcept = default;
 
QAudioBuffer::QAudioBuffer(const QByteArray &data, const QAudioFormat &format, qint64 startTime)
{
    if (!format.isValid() || !data.size())
        return;
    d = new QAudioBufferPrivate(format, data, startTime);
}
 
QAudioBuffer::QAudioBuffer(int numFrames, const QAudioFormat &format, qint64 startTime)
{
    if (!format.isValid() || !numFrames)
        return;
 
    QByteArray data(format.bytesForFrames(numFrames), '\0');
    d = new QAudioBufferPrivate(format, data, startTime);
}
 
QAudioBuffer &QAudioBuffer::operator=(const QAudioBuffer &other) = default;
 
QAudioBuffer::~QAudioBuffer() = default;
 
void QAudioBuffer::detach()
{
    if (!d)
        return;
    d = new QAudioBufferPrivate(*d);
}
 
QAudioFormat QAudioBuffer::format() const noexcept
{
    if (!d)
        return QAudioFormat();
    return d->format;
}
 
qsizetype QAudioBuffer::frameCount() const noexcept
{
    if (!d)
        return 0;
    return d->format.framesForBytes(d->data.size());
}
 
qsizetype QAudioBuffer::sampleCount() const noexcept
{
    return frameCount() * format().channelCount();
}
 
qsizetype QAudioBuffer::byteCount() const noexcept
{
    return d ? d->data.size() : 0;
}
 
qint64 QAudioBuffer::duration() const noexcept
{
    return format().durationForFrames(frameCount());
}
 
qint64 QAudioBuffer::startTime() const noexcept
{
    if (!d)
        return -1;
    return d->startTime;
}
 
const void *QAudioBuffer::constData() const noexcept
{
    if (!d)
        return nullptr;
    return d->data.constData();
}
 
const void *QAudioBuffer::data() const noexcept
{
    if (!d)
        return nullptr;
    return d->data.constData();
}
 
void *QAudioBuffer::data()
{
    if (!d)
        return nullptr;
    return d->data.data();
}
 
QT_END_NAMESPACE