shithub: libvpx

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vp9-svc: Fix to early golden exit nonrd-pickmode

For SVC: apply the sse_zeromv early exit also to
the case where golden is second temporal reference.
Set the thresh_svc_golden threshold for this case.

This is reduce the encode time for case where golden
is second temporal reference for SVC.
Change-Id: I8c0c87dd746579d3c4f5e983c7f9dd0a1e1476e0

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

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

@@ -1541,8 +1541,10 @@

   if (!cpi->use_svc ||

       (svc->use_gf_temporal_ref_current_layer &&

-       !svc->layer_context[svc->temporal_layer_id].is_key_frame))

+       !svc->layer_context[svc->temporal_layer_id].is_key_frame)) {

     gf_temporal_ref = 1;

+    thresh_svc_skip_golden = 500;

+  }

   init_ref_frame_cost(cm, xd, ref_frame_cost);

   memset(&mode_checked[0][0], 0, MB_MODE_COUNT * MAX_REF_FRAMES);

@@ -1796,7 +1798,7 @@

     // For SVC, skip the golden (spatial) reference search if sse of zeromv_last

     // is below threshold.

-    if (cpi->use_svc && ref_frame == GOLDEN_FRAME && !gf_temporal_ref &&

+    if (cpi->use_svc && ref_frame == GOLDEN_FRAME &&

         sse_zeromv_normalized < thresh_svc_skip_golden)

       continue;