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motion_est_template: Fix undefined left shift of negative number

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This fixes a -Wshift-negative-value warning reported with clang 3.7+.

Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
This commit is contained in:
Ganesh Ajjanagadde 2015-09-26 16:24:01 +02:00 committed by Vittorio Giovara
parent 977f41e274
commit 4885bde318
1 changed files with 2 additions and 1 deletions
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libavcodec/motion_est_template.c
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@ -704,7 +704,8 @@ static int sab_diamond_search(MpegEncContext * s, int *best, int dmin,
key += (1<<(ME_MAP_MV_BITS-1)) + (1<<(2*ME_MAP_MV_BITS-1));
if((key&((-1)<<(2*ME_MAP_MV_BITS))) != map_generation) continue;
if ((key & (-(1 << (2 * ME_MAP_MV_BITS)))) != map_generation)
continue;
minima[j].height= score_map[i];
minima[j].x= key & ((1<<ME_MAP_MV_BITS)-1); key>>=ME_MAP_MV_BITS;