itunesdatabox.cpp

来自「Amarok是一款在LINUX或其他类UNIX操作系统中运行的音频播放器软件。 」· C++ 代码 · 共 64 行

/***************************************************************************
    copyright            : (C) 2002, 2003, 2006 by Jochen Issing
    email                : [e-mail]
 ***************************************************************************/

/***************************************************************************
 *   This library is free software; you can redistribute it and/or modify  *
 *   it  under the terms of the GNU Lesser General Public License version  *
 *   2.1 as published by the Free Software Foundation.                     *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful, but   *
 *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the Free Software   *
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,            *
 *   MA  02110-1301  USA                                                   *
 ***************************************************************************/

#include <iostream>
#include "itunesdatabox.h"
#include "tbytevector.h"
#include "mp4isobox.h"
#include "tfile.h"

using namespace TagLib;

class MP4::ITunesDataBox::ITunesDataBoxPrivate
{
public:
  ByteVector data;
};

MP4::ITunesDataBox::ITunesDataBox( TagLib::File* file, MP4::Fourcc fourcc, uint size, long offset )
	:Mp4IsoFullBox(file, fourcc, size, offset)
{
  d = new MP4::ITunesDataBox::ITunesDataBoxPrivate();
}

MP4::ITunesDataBox::~ITunesDataBox()
{
  delete d;
}

ByteVector MP4::ITunesDataBox::data() const
{
  return d->data;
}

//! parse the content of the box
void MP4::ITunesDataBox::parse()
{
  // skip first 4 byte - don't know what they are supposed to be for - simply 4 zeros
  file()->seek( 4, TagLib::File::Current );
  // read contents - remaining size is box_size-12-4 (12:fullbox header, 4:starting zeros of data box)
#if 0
  std::cout << "           reading data box with data length: " << size()-16 << std::endl;
#endif
  d->data = file()->readBlock( size()-12-4 );
}