shithub: libvpx

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Fix a setting in cyclic refresh.

Use the correct period (in terms of cr->percent_refresh) for the condition
of larger delta-qp following key frame.
And account for larger interval for temporal layers.

Change-Id: Ibb43f5200f9b1eeb8bbb8211327b08ecda3c3b8a

--- a/vp9/encoder/vp9_aq_cyclicrefresh.c

+++ b/vp9/encoder/vp9_aq_cyclicrefresh.c

@@ -459,7 +459,10 @@

   cr->time_for_refresh = 0;

   // Use larger delta-qp (increase rate_ratio_qdelta) for first few (~4)

   // periods of the refresh cycle, after a key frame.

-  if (rc->frames_since_key <  4 * cr->percent_refresh)

+  // Account for larger interval on base layer for temporal layers.

+  if (cr->percent_refresh > 0 &&

+      rc->frames_since_key <  (4 * cpi->svc.number_temporal_layers) *

+      (100 / cr->percent_refresh))

     cr->rate_ratio_qdelta = 3.0;

   else

     cr->rate_ratio_qdelta = 2.0;