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/***************************************************************************
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 "mp4stblbox.h"
#include "mp4stsdbox.h"
#include "boxfactory.h"
#include "mp4file.h"
using namespace TagLib;
class MP4::Mp4StblBox::Mp4StblBoxPrivate
{
public:
//! container for all boxes in stbl box
TagLib::List<Mp4IsoBox*> stblBoxes;
//! a box factory for creating the appropriate boxes
MP4::BoxFactory boxfactory;
//! the handler type for the current trak
MP4::Fourcc handler_type;
}; // class Mp4StblBoxPrivate
MP4::Mp4StblBox::Mp4StblBox( TagLib::File* file, MP4::Fourcc fourcc, uint size, long offset )
: Mp4IsoBox( file, fourcc, size, offset )
{
d = new MP4::Mp4StblBox::Mp4StblBoxPrivate();
}
MP4::Mp4StblBox::~Mp4StblBox()
{
TagLib::List<Mp4IsoBox*>::Iterator delIter;
for( delIter = d->stblBoxes.begin();
delIter != d->stblBoxes.end();
delIter++ )
{
delete *delIter;
}
delete d;
}
void MP4::Mp4StblBox::setHandlerType( MP4::Fourcc fourcc )
{
d->handler_type = fourcc;
}
void MP4::Mp4StblBox::parse()
{
TagLib::MP4::File* mp4file = static_cast<MP4::File*>( file() );
uint totalsize = 8;
// parse all contained boxes
uint size;
MP4::Fourcc fourcc;
while( (mp4file->readSizeAndType( size, fourcc ) == true) )
{
totalsize += size;
// check for errors
if( totalsize > MP4::Mp4IsoBox::size() )
{
std::cerr << "Error in mp4 file " << mp4file->name() << " stbl 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() );
// check for stsd
if( static_cast<uint>(fourcc) == 0x73747364 /*'stsd'*/ )
{
// cast to stsd box
MP4::Mp4StsdBox* stsdbox = dynamic_cast<MP4::Mp4StsdBox*>(curbox);
if(!stsdbox)
return;
// set the handler type
stsdbox->setHandlerType( d->handler_type );
}
curbox->parsebox();
d->stblBoxes.append( curbox );
// check for end of stbl box
if( totalsize == MP4::Mp4IsoBox::size() )
break;
}
}
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