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vp9: don't retain NULL as segmentation_map

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This fixes segmentation faults, which were introduced in commit
4ba8f327.

Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun 2015-06-17 19:02:15 +02:00
parent f6c3f1ed60
commit d216b9debd
1 changed files with 2 additions and 1 deletions
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3
libavcodec/vp9.c
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@ -3988,7 +3988,8 @@ static int vp9_decode_frame(AVCodecContext *ctx, void *frame,
int size = pkt->size;
VP9Context *s = ctx->priv_data;
int res, tile_row, tile_col, i, ref, row, col;
int retain_segmap_ref = s->segmentation.enabled && !s->segmentation.update_map;
int retain_segmap_ref = s->segmentation.enabled && !s->segmentation.update_map
&& s->frames[REF_FRAME_SEGMAP].segmentation_map;
ptrdiff_t yoff, uvoff, ls_y, ls_uv;
AVFrame *f;
int bytesperpixel;