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List:       kde-multimedia
Subject:    Re: Help: I need a proper method to detect 99% of all mp3 files
From:       Scott Wheeler <wheeler () kde ! org>
Date:       2004-07-06 12:52:42
Message-ID: 200407061452.42956.wheeler () kde ! org
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On Tuesday 06 July 2004 12:49, Matthias Welwarsky wrote:
> Well, the proper method is to parse the bitstream and see if it is compliant 
> to the standard. This is both quick and reliable, and works with and without 
> tags.

Well, except for the quick part.  ;-)

Operations like this are bound by disk speed, not code complexity or CPU time.

Unfortunately TagLib doesn't contain anything for doing authoritative 
verification of mp3 files -- it mostly leaves this up to the mimetype 
recognition being used by the software using TagLib.  TagLib does however 
contain an implementation of MPEG headers and a mechanism for finding these 
in a file that could be useful in such a tool.

See:

http://webcvs.kde.org/cgi-bin/cvsweb.cgi/kdesupport/taglib/mpeg/mpegheader.h?rev=1.4&content-type=text/x-cvsweb-markup
 http://webcvs.kde.org/cgi-bin/cvsweb.cgi/kdesupport/taglib/mpeg/mpegfile.h?rev=1.27&content-type=text/x-cvsweb-markup


-Scott
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