shithub: libvpx

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Sync prev_frame/last_show_frame update with decoder

Make the encoder side handling of prev_frame and last_show_frame
update synchronized with the decoder behavior.

Change-Id: I0f265391cba182d7cc266a1c327fe6b92e24ab17

--- a/vp9/encoder/vp9_encoder.c

+++ b/vp9/encoder/vp9_encoder.c

@@ -4972,7 +4972,10 @@

   cm->last_height = cm->height;

   // reset to normal state now that we are done.

-  if (!cm->show_existing_frame) cm->last_show_frame = cm->show_frame;

+  if (!cm->show_existing_frame) {

+    cm->last_show_frame = cm->show_frame;

+    cm->prev_frame = cm->cur_frame;

+  }

   if (cm->show_frame) {

     vp9_swap_mi_and_prev_mi(cm);

@@ -4981,7 +4984,6 @@

     ++cm->current_video_frame;

     if (cpi->use_svc) vp9_inc_frame_in_layer(cpi);

   }

-  cm->prev_frame = cm->cur_frame;

   if (cpi->use_svc) {

     cpi->svc