shithub: libvpx

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Skip unnecessary motion search

If a ref frame is masked out, we do not need to do motion search for it.
It makes speed 0 a little faster.

Change-Id: I68f71255b2798b24fd1d5b28ed24a2ef87251413

--- a/vp9/encoder/vp9_rdopt.c

+++ b/vp9/encoder/vp9_rdopt.c

@@ -3144,7 +3144,8 @@

   for (ref_frame = LAST_FRAME; ref_frame <= ALTREF_FRAME; ++ref_frame) {

     x->pred_mv_sad[ref_frame] = INT_MAX;

-    if (cpi->ref_frame_flags & flag_list[ref_frame]) {

+    if ((cpi->ref_frame_flags & flag_list[ref_frame]) &&

+        !(is_rect_partition && (ctx->skip_ref_frame_mask & (1 << ref_frame)))) {

       assert(get_ref_frame_buffer(cpi, ref_frame) != NULL);

       setup_buffer_inter(cpi, x, ref_frame, bsize, mi_row, mi_col,

                          frame_mv[NEARESTMV], frame_mv[NEARMV], yv12_mb);