lavu: add av_get_media_type_string() convenience function
authorStefano Sabatini <stefano.sabatini-lala@poste.it>
Thu, 18 Aug 2011 10:27:44 +0000 (12:27 +0200)
committerStefano Sabatini <stefano.sabatini-lala@poste.it>
Sat, 20 Aug 2011 12:20:25 +0000 (14:20 +0200)
Avoid code duplication.


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