[FFmpeg-cvslog] rv10: Reject slices that does not have the same type as the first one

[Laurent Aimar]

ffmpeg | branch: release/0.8 | Laurent Aimar <fenrir at videolan.org> | Sun Sep 18 00:03:08 2011 +0200| [bb6702f20675868fba91f6be5e5120b5d8ef031f] | committer: Anton Khirnov

rv10: Reject slices that does not have the same type as the first one

This prevents crashes with some corrupted bitstreams.

Signed-off-by: Martin Storsjö <martin at martin.st>
(cherry picked from commit 4a29b471869353c3077fb4b25b6518eb1047afb7)

Signed-off-by: Anton Khirnov <anton at khirnov.net>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=bb6702f20675868fba91f6be5e5120b5d8ef031f
---

 libavcodec/rv10.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
index 78f97b1..223500c 100644
--- a/libavcodec/rv10.c
+++ b/libavcodec/rv10.c
@@ -543,6 +543,11 @@ static int rv10_decode_packet(AVCodecContext *avctx,
         if(MPV_frame_start(s, avctx) < 0)
             return -1;
         ff_er_frame_start(s);
+    } else {
+        if (s->current_picture_ptr->pict_type != s->pict_type) {
+            av_log(s->avctx, AV_LOG_ERROR, "Slice type mismatch\n");
+            return -1;
+        }
     }
 
     av_dlog(avctx, "qscale=%d\n", s->qscale);