[SCM] libav/experimental: vp5: don't try decoding a P frame before any I frame was parsed fix issue802

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit 73c87551e57d66da1ea6bfa2dfff45ca6cdda540
Author: Aurelien Jacobs <aurel at gnuage.org>
Date:   Tue Jan 27 00:23:27 2009 +0000

    vp5: don't try decoding a P frame before any I frame was parsed
    fix issue802
    
    Originally committed as revision 16813 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/vp5.c b/libavcodec/vp5.c
index e47db0d..3eecb56 100644
--- a/libavcodec/vp5.c
+++ b/libavcodec/vp5.c
@@ -64,7 +64,8 @@ static int vp5_parse_header(VP56Context *s, const uint8_t *buf, int buf_size,
             avcodec_set_dimensions(s->avctx, 16*cols, 16*rows);
             return 2;
         }
-    }
+    } else if (!s->macroblocks)
+        return 0;
     return 1;
 }
 

-- 
Libav/FFmpeg packaging