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/***************************************************************************
copyright : (C) 2002, 2003, 2006 by Jochen Issing
email : [email protected]
***************************************************************************/
/***************************************************************************
* 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 "mp4mdiabox.h"
#include "mp4hdlrbox.h"
#include "mp4minfbox.h"
#include "boxfactory.h"
#include "mp4file.h"
using namespace TagLib;
class MP4::Mp4MdiaBox::Mp4MdiaBoxPrivate
{
public:
//! container for all boxes in mdia box
TagLib::List<Mp4IsoBox*> mdiaBoxes;
//! a box factory for creating the appropriate boxes
MP4::BoxFactory boxfactory;
}; // class Mp4MdiaBoxPrivate
MP4::Mp4MdiaBox::Mp4MdiaBox( TagLib::File* file, MP4::Fourcc fourcc, TagLib::uint size, long offset )
: Mp4IsoBox( file, fourcc, size, offset )
{
d = new MP4::Mp4MdiaBox::Mp4MdiaBoxPrivate();
}
MP4::Mp4MdiaBox::~Mp4MdiaBox()
{
TagLib::List<Mp4IsoBox*>::Iterator delIter;
for( delIter = d->mdiaBoxes.begin();
delIter != d->mdiaBoxes.end();
delIter++ )
{
delete *delIter;
}
delete d;
}
void MP4::Mp4MdiaBox::parse()
{
TagLib::MP4::File* mp4file = static_cast<MP4::File*>( file() );
TagLib::uint totalsize = 8;
// parse all contained boxes
TagLib::uint size;
MP4::Fourcc fourcc;
// stores the current handler type
TagLib::MP4::Fourcc hdlrtype;
while( (mp4file->readSizeAndType( size, fourcc ) == true) )
{
totalsize += size;
// check for errors
if( totalsize > MP4::Mp4IsoBox::size() )
{
std::cerr << "Error in mp4 file " << mp4file->name() << " mdia box contains bad box with name: " << fourcc.toString() << std::endl;
return;
}
// create the appropriate subclass and parse it
MP4::Mp4IsoBox* curbox = d->boxfactory.createInstance( mp4file, fourcc, size, mp4file->tell() );
if( static_cast<TagLib::uint>( fourcc ) == 0x6d696e66 /*"minf"*/ )
{
// cast to minf
Mp4MinfBox* minfbox = dynamic_cast<Mp4MinfBox*>( curbox );
if(!minfbox)
return;
// set handler type
minfbox->setHandlerType( hdlrtype );
}
curbox->parsebox();
d->mdiaBoxes.append( curbox );
if(static_cast<TagLib::uint>( fourcc ) == 0x68646c72 /*"hdlr"*/ )
{
// cast to hdlr box
Mp4HdlrBox* hdlrbox = dynamic_cast<Mp4HdlrBox*>( curbox );
if(!hdlrbox)
return;
// get handler type
hdlrtype = hdlrbox->hdlr_type();
}
// check for end of mdia box
if( totalsize == MP4::Mp4IsoBox::size() )
break;
}
}
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