[FFmpeg-cvslog] mpegvideo: Don't use ff_mspel_motion() for vc1

[Michael Niedermayer]

ffmpeg | branch: release/0.7 | Michael Niedermayer <michaelni at gmx.at> | Sun Nov 20 17:19:25 2011 +0100| [899d95efe12f1e250b361837c1c8c06df9ac9b86] | committer: Anton Khirnov

mpegvideo: Don't use ff_mspel_motion() for vc1

Using ff_mspel_motion assumes that s (a MpegEncContext
poiinter) really is a Wmv2Context.

This fixes crashes in error resilience on vc1/wmv3 videos.

CC: libav-stable at libav.org
Signed-off-by: Martin Storsjö <martin at martin.st>
(cherry picked from commit 18f2d5cb9c48d06895960f37467576725c9dc2d1)

Signed-off-by: Anton Khirnov <anton at khirnov.net>
(cherry picked from commit da0c457663479bc1828918e1bb3e4a5e4de0d557)

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

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=899d95efe12f1e250b361837c1c8c06df9ac9b86
---

 libavcodec/mpegvideo_common.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavcodec/mpegvideo_common.h b/libavcodec/mpegvideo_common.h
index d0093ce..dfedc6b 100644
--- a/libavcodec/mpegvideo_common.h
+++ b/libavcodec/mpegvideo_common.h
@@ -725,7 +725,8 @@ static av_always_inline void MPV_motion_internal(MpegEncContext *s,
                         0, 0, 0,
                         ref_picture, pix_op, qpix_op,
                         s->mv[dir][0][0], s->mv[dir][0][1], 16);
-        }else if(!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) && s->mspel){
+        } else if (!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) &&
+                   s->mspel && s->codec_id == CODEC_ID_WMV2) {
             ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
                         ref_picture, pix_op,
                         s->mv[dir][0][0], s->mv[dir][0][1], 16);