hevc: check slice address length

It is used as get_bits argument and reading 0 bits doesn't make sense. Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> Signed-off-by: Anton Khirnov <anton@khirnov.net>
10 years ago · 9f4c7397a2
parent a9a2f36130
commit 9f4c7397a2
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/hevc.c
+++ b/libavcodec/hevc.c
@ -532,7 +532,7 @@ static int hls_slice_header(HEVCContext *s)

        slice_address_length = av_ceil_log2(s->sps->ctb_width *
                                            s->sps->ctb_height);
-        sh->slice_segment_addr = get_bits(gb, slice_address_length);
+        sh->slice_segment_addr = slice_address_length ? get_bits(gb, slice_address_length) : 0;
        if (sh->slice_segment_addr >= s->sps->ctb_width * s->sps->ctb_height) {
            av_log(s->avctx, AV_LOG_ERROR,
                   "Invalid slice segment address: %u.\n",