shithub: libvpx

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Adding is_mv_valid() function.

Change-Id: I9d036244b558765b252d8c6681b22721cb2e51bb

--- a/vp9/decoder/vp9_decodemv.c

+++ b/vp9/decoder/vp9_decodemv.c

@@ -356,6 +356,11 @@

   mbmi->uv_mode = read_intra_mode_uv(cm, r, mbmi->mode);

 }

+static INLINE int is_mv_valid(const MV *mv) {

+  return mv->row > MV_LOW && mv->row < MV_UPP &&

+         mv->col > MV_LOW && mv->col < MV_UPP;

+}

+

 static INLINE int assign_mv(VP9_COMMON *cm, MB_PREDICTION_MODE mode,

                             int_mv mv[2], int_mv ref_mv[2],

                             int_mv nearest_mv[2], int_mv near_mv[2],

@@ -367,14 +372,10 @@

     case NEWMV: {

       nmv_context_counts *const mv_counts = cm->frame_parallel_decoding_mode ?

                                             NULL : &cm->counts.mv;

-      read_mv(r, &mv[0].as_mv, &ref_mv[0].as_mv,

-              &cm->fc.nmvc, mv_counts, allow_hp);

-      if (is_compound)

-        read_mv(r, &mv[1].as_mv, &ref_mv[1].as_mv,

-                &cm->fc.nmvc, mv_counts, allow_hp);

       for (i = 0; i < 1 + is_compound; ++i) {

-        ret = ret && mv[i].as_mv.row < MV_UPP && mv[i].as_mv.row > MV_LOW;

-        ret = ret && mv[i].as_mv.col < MV_UPP && mv[i].as_mv.col > MV_LOW;

+        read_mv(r, &mv[i].as_mv, &ref_mv[i].as_mv, &cm->fc.nmvc, mv_counts,

+                allow_hp);

+        ret = ret && is_mv_valid(&mv[i].as_mv);

       }

       break;

     }