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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QAUDIOBUFFER_P_H
#define QAUDIOBUFFER_P_H
#include <qtmultimediadefs.h>
#include <qmultimedia.h>
#include "qaudioformat.h"
QT_BEGIN_NAMESPACE
// 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
#endif // QAUDIOBUFFER_P_H
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