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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QAUDIOBUFFER_P_H
#define QAUDIOBUFFER_P_H
#include <qtmultimediadefs.h>
#include <qtmedianamespace.h>
#include "qaudioformat.h"
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Multimedia)
// Required for QDoc workaround
class QString;
class Q_MULTIMEDIA_EXPORT QAbstractAudioBuffer {
public:
virtual ~QAbstractAudioBuffer() {}
// Lifetime management
virtual void release() = 0;
// Format related
virtual QAudioFormat format() const = 0;
virtual qint64 startTime() const = 0;
virtual int frameCount() const = 0;
// R/O Data
virtual void *constData() const = 0;
// For writable data we do this:
// If we only have one reference to the provider,
// call writableData(). If that does not return 0,
// then we're finished. If it does return 0, then we call
// writableClone() to get a new buffer and then release
// the old clone if that succeeds. If it fails, we create
// a memory clone from the constData and release the old buffer.
// If writableClone() succeeds, we then call writableData() on it
// and that should be good.
virtual void *writableData() = 0;
virtual QAbstractAudioBuffer *clone() const = 0;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QAUDIOBUFFER_P_H
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