vc1: properly zero coded_block[] edges on new slice entry.

Previously, we would leave the left edge uninitialized, which led to
CBP prediction errors on slice edges, e.g. in SA10098.vc1.
(cherry picked from commit d4b9974465)

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Ronald S. Bultje
2011-08-24 14:36:16 -07:00
committed by Reinhard Tartler
parent ce8f40a7b9
commit 97ce2a29b6

View File

@@ -3020,7 +3020,7 @@ static void vc1_decode_i_blocks_adv(VC1Context *v)
s->mb_x = 0;
ff_init_block_index(s);
memset(&s->coded_block[s->block_index[0]-s->b8_stride], 0,
s->b8_stride * sizeof(*s->coded_block));
(1 + s->b8_stride) * sizeof(*s->coded_block));
}
for(; s->mb_y < s->end_mb_y; s->mb_y++) {
s->mb_x = 0;