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Diffstat (limited to 'src/metadata/m4a/mp4minfbox.cpp')
-rw-r--r-- | src/metadata/m4a/mp4minfbox.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/metadata/m4a/mp4minfbox.cpp b/src/metadata/m4a/mp4minfbox.cpp new file mode 100644 index 0000000..0081dda --- /dev/null +++ b/src/metadata/m4a/mp4minfbox.cpp @@ -0,0 +1,104 @@ +/*************************************************************************** + 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 "mp4minfbox.h" +#include "mp4stblbox.h" +#include "boxfactory.h" +#include "mp4file.h" + +using namespace TagLib; + +class MP4::Mp4MinfBox::Mp4MinfBoxPrivate +{ +public: + //! container for all boxes in minf box + TagLib::List<Mp4IsoBox*> minfBoxes; + //! a box factory for creating the appropriate boxes + MP4::BoxFactory boxfactory; + //! stores the handler type of the current trak + MP4::Fourcc handler_type; +}; // class Mp4MinfBoxPrivate + +MP4::Mp4MinfBox::Mp4MinfBox( TagLib::File* file, MP4::Fourcc fourcc, TagLib::uint size, long offset ) + : Mp4IsoBox( file, fourcc, size, offset ) +{ + d = new MP4::Mp4MinfBox::Mp4MinfBoxPrivate(); +} + +MP4::Mp4MinfBox::~Mp4MinfBox() +{ + TagLib::List<Mp4IsoBox*>::Iterator delIter; + for( delIter = d->minfBoxes.begin(); + delIter != d->minfBoxes.end(); + delIter++ ) + { + delete *delIter; + } + delete d; +} + +void MP4::Mp4MinfBox::setHandlerType( MP4::Fourcc fourcc ) +{ + d->handler_type = fourcc; +} + +void MP4::Mp4MinfBox::parse() +{ + TagLib::MP4::File* mp4file = static_cast<MP4::File*>( file() ); + + TagLib::uint totalsize = 8; + // parse all contained boxes + TagLib::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() << " minf 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 ) == 0x7374626c /*stbl*/ ) + { + // cast to hdlr box + Mp4StblBox* stblbox = dynamic_cast<Mp4StblBox*>( curbox ); + if(!stblbox) + return; + // set handler type + stblbox->setHandlerType( d->handler_type ); + } + + curbox->parsebox(); + d->minfBoxes.append( curbox ); + + // check for end of minf box + if( totalsize == MP4::Mp4IsoBox::size() ) + break; + } +} |