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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 "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 Mp4StsdBoxPrivate
MP4::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 );
}
}
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