/usr/include/qt5/QtMultimedia/qaudiobuffer.h is in qtmultimedia5-dev 5.2.1-0ubuntu5.
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**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** $QT_BEGIN_LICENSE:LGPL$
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** packaging of this file. Please review the following information to
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#ifndef QAUDIOBUFFER_H
#define QAUDIOBUFFER_H
#include <QtCore/qshareddata.h>
#include <QtMultimedia/qtmultimediadefs.h>
#include <QtMultimedia/qmultimedia.h>
#include <QtMultimedia/qaudio.h>
#include <QtMultimedia/qaudioformat.h>
QT_BEGIN_NAMESPACE
class QAbstractAudioBuffer;
class QAudioBufferPrivate;
class Q_MULTIMEDIA_EXPORT QAudioBuffer
{
public:
QAudioBuffer();
QAudioBuffer(QAbstractAudioBuffer *provider);
QAudioBuffer(const QAudioBuffer &other);
QAudioBuffer(const QByteArray &data, const QAudioFormat &format, qint64 startTime = -1);
QAudioBuffer(int numFrames, const QAudioFormat &format, qint64 startTime = -1); // Initialized to empty
QAudioBuffer& operator=(const QAudioBuffer &other);
~QAudioBuffer();
bool isValid() const;
QAudioFormat format() const;
int frameCount() const;
int sampleCount() const;
int byteCount() const;
qint64 duration() const;
qint64 startTime() const;
// Data modification
// void clear();
// Other ideas
// operator *=
// operator += (need to be careful about different formats)
// Data access
const void* constData() const; // Does not detach, preferred
const void* data() const; // Does not detach
void *data(); // detaches
// Structures for easier access to stereo data
template <typename T> struct StereoFrameDefault { enum { Default = 0 }; };
template <typename T> struct StereoFrame {
StereoFrame()
: left(T(StereoFrameDefault<T>::Default))
, right(T(StereoFrameDefault<T>::Default))
{
}
StereoFrame(T leftSample, T rightSample)
: left(leftSample)
, right(rightSample)
{
}
StereoFrame& operator=(const StereoFrame &other)
{
// Two straight assigns is probably
// cheaper than a conditional check on
// self assignment
left = other.left;
right = other.right;
return *this;
}
T left;
T right;
T average() const {return (left + right) / 2;}
void clear() {left = right = T(StereoFrameDefault<T>::Default);}
};
typedef StereoFrame<unsigned char> S8U;
typedef StereoFrame<signed char> S8S;
typedef StereoFrame<unsigned short> S16U;
typedef StereoFrame<signed short> S16S;
typedef StereoFrame<float> S32F;
template <typename T> const T* constData() const {
return static_cast<const T*>(constData());
}
template <typename T> const T* data() const {
return static_cast<const T*>(data());
}
template <typename T> T* data() {
return static_cast<T*>(data());
}
private:
QAudioBufferPrivate *d;
};
template <> struct QAudioBuffer::StereoFrameDefault<unsigned char> { enum { Default = 128 }; };
template <> struct QAudioBuffer::StereoFrameDefault<unsigned short> { enum { Default = 32768 }; };
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QAudioBuffer)
#endif // QAUDIOBUFFER_H
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