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