[FFmpeg-cvslog] avcodec/mpeg12dec: Document Ticket3809 fix

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sat Aug  2 22:57:34 2014 +0200| [17c656518623e54ba5818e7bee965646421aeae0] | committer: Michael Niedermayer

avcodec/mpeg12dec: Document Ticket3809 fix

Suggested-by: Reimar
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=17c656518623e54ba5818e7bee965646421aeae0
---

 libavcodec/mpeg12dec.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c
index 27bb6e0..6c6b34a 100644
--- a/libavcodec/mpeg12dec.c
+++ b/libavcodec/mpeg12dec.c
@@ -1884,6 +1884,10 @@ static int mpeg_decode_slice(MpegEncContext *s, int mb_y,
                 } else
                     goto eos;
             }
+            // There are some files out there which are missing the last slice
+            // in cases where the slice is completely outside the vissible
+            // area, we detect this here instead of running into the end expecting
+            // more data
             if (s->mb_y >= ((s->height + 15) >> 4) &&
                 s->progressive_frame &&
                 !s->progressive_sequence &&