shithub: libvpx

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vp9 pickmode: Fix the shift on negative value.

Error only affected svc 1 pass mode, introduced in:
https://chromium-review.googlesource.com/#/c/319609/

Change-Id: Ifc078c82d38b742966a81baaf5ad532f7dbc13a4

--- a/vp9/encoder/vp9_pickmode.c

+++ b/vp9/encoder/vp9_pickmode.c

@@ -117,8 +117,8 @@

     MV_REF *candidate =

         &cm->prev_frame->mvs[(mi_col>>1) + (mi_row>>1) * (cm->mi_cols>>1)];

     if (candidate->mv[0].as_int != INVALID_MV) {

-        base_mv->as_mv.row = (candidate->mv[0].as_mv.row << 1);

-        base_mv->as_mv.col = (candidate->mv[0].as_mv.col << 1);

+        base_mv->as_mv.row = (candidate->mv[0].as_mv.row * 2);

+        base_mv->as_mv.col = (candidate->mv[0].as_mv.col * 2);

       clamp_mv_ref(&base_mv->as_mv, xd);

     } else {

       base_mv->as_int = INVALID_MV;