/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/


#ifndef WAVHEADER_H
#define WAVHEADER_H

#include <QtCore/qobject.h>
#include <QtCore/qfile.h>
#include <qaudioformat.h>

/**
 * Helper class for parsing WAV file headers.
 *
 * See https://ccrma.stanford.edu/courses/422/projects/WaveFormat/
 */
class WavHeader
{
public:
    WavHeader(const QAudioFormat &format = QAudioFormat(),
              qint64 dataLength = 0);

    // Reads WAV header and seeks to start of data
    bool read(QIODevice &device);

    // Writes WAV header
    bool write(QIODevice &device);

    const QAudioFormat& format() const;
    qint64 dataLength() const;

    static qint64 headerLength();

    static bool writeDataLength(QIODevice &device, qint64 dataLength);

private:
    QAudioFormat m_format;
    qint64 m_dataLength;
};

#endif