hevc: always clip luma_log2_weight_denom

Its value shall be between 0 and 7 according to the specifications. CC: libav-stable@libav.org Bug-Id: CID 1257502
10 years ago · b2bece5e9a
parent bab8d73765
commit b2bece5e9a
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/hevc.c
+++ b/libavcodec/hevc.c
@ -251,7 +251,7 @@ static void pred_weight_table(HEVCContext *s, GetBitContext *gb)
    uint8_t luma_weight_l1_flag[16];
    uint8_t chroma_weight_l1_flag[16];

-    s->sh.luma_log2_weight_denom = get_ue_golomb_long(gb);
+    s->sh.luma_log2_weight_denom = av_clip_c(get_ue_golomb_long(gb), 0, 7);
    if (s->sps->chroma_format_idc != 0) {
        int delta = get_se_golomb(gb);
        s->sh.chroma_log2_weight_denom = av_clip_c(s->sh.luma_log2_weight_denom + delta, 0, 7);