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hevc_mvs: make sure to always initialize the temporal MV fully
The spec requires this. Fixes uninitialized reads on some samples. Remove now unnecessary initialization of the whole merge candidate list.
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@ -481,14 +481,10 @@ static void derive_spatial_merge_candidates(HEVCContext *s, int x0, int y0,
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mergecandlist[nb_merge_cand].is_intra = 0;
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mergecandlist[nb_merge_cand].pred_flag[0] = available_l0;
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mergecandlist[nb_merge_cand].pred_flag[1] = available_l1;
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if (available_l0) {
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mergecandlist[nb_merge_cand].mv[0] = mv_l0_col;
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mergecandlist[nb_merge_cand].ref_idx[0] = 0;
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}
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if (available_l1) {
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mergecandlist[nb_merge_cand].mv[1] = mv_l1_col;
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mergecandlist[nb_merge_cand].ref_idx[1] = 0;
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}
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AV_ZERO16(mergecandlist[nb_merge_cand].ref_idx);
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mergecandlist[nb_merge_cand].mv[0] = mv_l0_col;
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mergecandlist[nb_merge_cand].mv[1] = mv_l1_col;
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if (merge_idx == nb_merge_cand)
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return;
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nb_merge_cand++;
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@ -558,8 +554,6 @@ void ff_hevc_luma_mv_merge_mode(HEVCContext *s, int x0, int y0, int nPbW,
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int nPbH2 = nPbH;
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HEVCLocalContext *lc = &s->HEVClc;
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memset(mergecand_list, 0, MRG_MAX_NUM_CANDS * sizeof(*mergecand_list));
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if (s->pps->log2_parallel_merge_level > 2 && nCS == 8) {
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singleMCLFlag = 1;
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x0 = lc->cu.x;
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