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106 lines
3.5 KiB
106 lines
3.5 KiB
/***************************************************************************
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copyright : (C) 2002, 2003, 2006 by Jochen Issing
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email : jochen.issing@isign-softart.de
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***************************************************************************/
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/***************************************************************************
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* This library is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU Lesser General Public License version *
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* 2.1 as published by the Free Software Foundation. *
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* *
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* This library is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this library; if not, write to the Free Software *
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, *
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* MA 02110-1301 USA *
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***************************************************************************/
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#include "tlist.h"
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#include <iostream>
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#include "mp4stblbox.h"
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#include "mp4stsdbox.h"
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#include "boxfactory.h"
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#include "mp4file.h"
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using namespace TagLib;
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class MP4::Mp4StblBox::Mp4StblBoxPrivate
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{
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public:
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//! container for all boxes in stbl box
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TagLib::List<Mp4IsoBox*> stblBoxes;
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//! a box factory for creating the appropriate boxes
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MP4::BoxFactory boxfactory;
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//! the handler type for the current trak
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MP4::Fourcc handler_type;
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}; // class Mp4StblBoxPrivate
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MP4::Mp4StblBox::Mp4StblBox( TagLib::File* file, MP4::Fourcc fourcc, TagLib::uint size, long offset )
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: Mp4IsoBox( file, fourcc, size, offset )
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{
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d = new MP4::Mp4StblBox::Mp4StblBoxPrivate();
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}
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MP4::Mp4StblBox::~Mp4StblBox()
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{
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TagLib::List<Mp4IsoBox*>::Iterator delIter;
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for( delIter = d->stblBoxes.begin();
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delIter != d->stblBoxes.end();
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delIter++ )
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{
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delete *delIter;
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}
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delete d;
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}
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void MP4::Mp4StblBox::setHandlerType( MP4::Fourcc fourcc )
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{
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d->handler_type = fourcc;
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}
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void MP4::Mp4StblBox::parse()
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{
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TagLib::MP4::File* mp4file = static_cast<MP4::File*>( file() );
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TagLib::uint totalsize = 8;
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// parse all contained boxes
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TagLib::uint size;
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MP4::Fourcc fourcc;
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while( (mp4file->readSizeAndType( size, fourcc ) == true) )
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{
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totalsize += size;
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// check for errors
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if( totalsize > MP4::Mp4IsoBox::size() )
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{
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std::cerr << "Error in mp4 file " << mp4file->name() << " stbl box contains bad box with name: " << fourcc.toString() << std::endl;
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return;
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}
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// create the appropriate subclass and parse it
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MP4::Mp4IsoBox* curbox = d->boxfactory.createInstance( mp4file, fourcc, size, mp4file->tell() );
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// check for stsd
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if( static_cast<TagLib::uint>(fourcc) == 0x73747364 /*'stsd'*/ )
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{
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// cast to stsd box
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MP4::Mp4StsdBox* stsdbox = dynamic_cast<MP4::Mp4StsdBox*>(curbox);
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if(!stsdbox)
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return;
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// set the handler type
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stsdbox->setHandlerType( d->handler_type );
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}
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curbox->parsebox();
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d->stblBoxes.append( curbox );
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// check for end of stbl box
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if( totalsize == MP4::Mp4IsoBox::size() )
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break;
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}
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}
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