/***************************************************************************    copyright            : (C) 2002, 2003, 2006 by Jochen Issing    email                : jochen.issing@isign-softart.de ***************************************************************************//*************************************************************************** *   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 "tlist.h"#include <iostream>#include "mp4stsdbox.h"#include "mp4audiosampleentry.h"#include "mp4file.h"using namespace TagLib;class MP4::Mp4StsdBox::Mp4StsdBoxPrivate{public:  //! the handler type for the current trak  MP4::Fourcc   handler_type;  //! the audio sample entry  MP4::Mp4AudioSampleEntry* audioSampleEntry;}; // class Mp4StsdBoxPrivateMP4::Mp4StsdBox::Mp4StsdBox( TagLib::File* file, MP4::Fourcc fourcc, TagLib::uint size, long offset )	: Mp4IsoFullBox( file, fourcc, size, offset ){  d = new MP4::Mp4StsdBox::Mp4StsdBoxPrivate();}MP4::Mp4StsdBox::~Mp4StsdBox(){  delete d;}void MP4::Mp4StsdBox::setHandlerType( MP4::Fourcc fourcc ){  d->handler_type = fourcc;}void MP4::Mp4StsdBox::parse(){  MP4::File* mp4file = dynamic_cast<MP4::File*>( file() );  if(!mp4file)    return;  TagLib::uint totalsize = 12; // initial size of box  // check for handler type - only parse if 'soun':  if( static_cast<TagLib::uint>(d->handler_type) == 0x736f756e )  {    // read entry count    TagLib::uint entry_count;    if(!mp4file->readInt( entry_count ))      return;    // simply read first entry and skip all following    // read size and type    TagLib::uint cursize;    MP4::Fourcc  fourcc;    if( !mp4file->readSizeAndType( cursize, fourcc ))      return;    totalsize += 12;    // alocate an AudioSampleEntry    d->audioSampleEntry = new MP4::Mp4AudioSampleEntry( mp4file, fourcc, cursize, mp4file->tell() );    // parse the AudioSampleEntry    d->audioSampleEntry->parse();    totalsize += cursize-8;    // skip the remaining box contents    mp4file->seek( size()-totalsize, TagLib::File::Current );  }  else  {    mp4file->seek( size()-totalsize, TagLib::File::Current );  }}