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avcodec/hevc: clear tab_slice_address in hevc_frame_start()

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Fixes inconsistencies
Fixes use of uninitilaized memory
Fixes part of  cb307d24befbd109c6f054008d6777b5/asan_static-oob_124a175_1445_cov_2355279992_DBLK_D_VIXS_1.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-02-07 02:37:18 +01:00
parent 951793717a
commit 56985d26d7
1 changed files with 3 additions and 0 deletions
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3
libavcodec/hevc.c
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@ -2199,12 +2199,15 @@ static int set_side_data(HEVCContext *s)
static int hevc_frame_start(HEVCContext *s)
{
HEVCLocalContext *lc = s->HEVClc;
int pic_size_in_ctb = ((s->sps->width >> s->sps->log2_min_cb_size) + 1) *
((s->sps->height >> s->sps->log2_min_cb_size) + 1);
int ret;
memset(s->horizontal_bs, 0, 2 * s->bs_width * (s->bs_height + 1));
memset(s->vertical_bs, 0, 2 * s->bs_width * (s->bs_height + 1));
memset(s->cbf_luma, 0, s->sps->min_tb_width * s->sps->min_tb_height);
memset(s->is_pcm, 0, s->sps->min_pu_width * s->sps->min_pu_height);
memset(s->tab_slice_address, -1, pic_size_in_ctb * sizeof(*s->tab_slice_address));
lc->start_of_tiles_x = 0;
s->is_decoded = 0;