[FFmpeg-cvslog] indeo: check for reference when inheriting mvs

[Luca Barbato]

ffmpeg | branch: release/1.1 | Luca Barbato <lu_zero at gentoo.org> | Sun Jun 30 10:40:37 2013 +0200| [5f7944a308df69619315a18e0a6c2661c7346990] | committer: Reinhard Tartler

indeo: check for reference when inheriting mvs

The same is done already for qdelta.

Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable at libav.org
(cherry picked from commit b36e1893ef3430f039c1eaddeedcbb378f9c4444)

Signed-off-by: Reinhard Tartler <siretart at tauware.de>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5f7944a308df69619315a18e0a6c2661c7346990
---

 libavcodec/ivi_common.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/ivi_common.c b/libavcodec/ivi_common.c
index 9628728..956bbb1 100644
--- a/libavcodec/ivi_common.c
+++ b/libavcodec/ivi_common.c
@@ -599,7 +599,7 @@ static int ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
             if (band->inherit_qdelta && ref_mb)
                 mb->q_delta = ref_mb->q_delta;
 
-            if (band->inherit_mv) {
+            if (band->inherit_mv && ref_mb) {
                 /* motion vector inheritance */
                 if (mv_scale) {
                     mb->mv_x = ivi_scale_mv(ref_mb->mv_x, mv_scale);