ffmpeg source update for sep 09

source/patched-ffmpeg-mt/libavformat/riff.c

 /*
  * RIFF codec tags
  * Copyright (c) 2000 Fabrice Bellard
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
@@ skipping 41 matching lines @@
     { CODEC_ID_MPEG4,        MKTAG('M', '4', 'S', '2') },
     { CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  0 ) }, /* some broken avi use this */
     { CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', '1') },
     { CODEC_ID_MPEG4,        MKTAG('B', 'L', 'Z', '0') },
     { CODEC_ID_MPEG4,        MKTAG('m', 'p', '4', 'v') },
     { CODEC_ID_MPEG4,        MKTAG('U', 'M', 'P', '4') },
     { CODEC_ID_MPEG4,        MKTAG('W', 'V', '1', 'F') },
     { CODEC_ID_MPEG4,        MKTAG('S', 'E', 'D', 'G') },
     { CODEC_ID_MPEG4,        MKTAG('R', 'M', 'P', '4') },
     { CODEC_ID_MPEG4,        MKTAG('3', 'I', 'V', '2') },
+    { CODEC_ID_MPEG4,        MKTAG('W', 'A', 'W', 'V') }, /* WaWv MPEG-4 Video Codec */
     { CODEC_ID_MPEG4,        MKTAG('F', 'F', 'D', 'S') },
     { CODEC_ID_MPEG4,        MKTAG('F', 'V', 'F', 'W') },
     { CODEC_ID_MPEG4,        MKTAG('D', 'C', 'O', 'D') },
     { CODEC_ID_MPEG4,        MKTAG('M', 'V', 'X', 'M') },
     { CODEC_ID_MPEG4,        MKTAG('P', 'M', '4', 'V') },
     { CODEC_ID_MPEG4,        MKTAG('S', 'M', 'P', '4') },
     { CODEC_ID_MPEG4,        MKTAG('D', 'X', 'G', 'M') },
     { CODEC_ID_MPEG4,        MKTAG('V', 'I', 'D', 'M') },
     { CODEC_ID_MPEG4,        MKTAG('M', '4', 'T', '3') },
     { CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'X') },
@@ skipping 472 matching lines @@
         *au_scale= stream->time_base.num;
         *au_rate = stream->time_base.den;
     }else{
         *au_scale= stream->block_align ? stream->block_align*8 : 8;
         *au_rate = stream->bit_rate ? stream->bit_rate : 8*stream->sample_rate;
     }
     gcd= av_gcd(*au_scale, *au_rate);
     *au_scale /= gcd;
     *au_rate /= gcd;
 }