shithub: libvpx

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vp9-rtc: Fix to resetting drop_spatial_layer

The reset happens on the base spatial layer, before
encoding. But it should be reset on the
first_spatial_layer_to_encode, which may not be 0.

Change-Id: I38ef686b4459ca7433062adbfe32ef2134e1ad60
(cherry picked from commit 769129fb29fc66720be2b01276a472c334757d2d)

--- a/vp9/encoder/vp9_svc_layercontext.c

+++ b/vp9/encoder/vp9_svc_layercontext.c

@@ -864,8 +864,9 @@

     }

   }

-  // Reset the drop flags for all spatial layers, on the base layer.

-  if (svc->spatial_layer_id == 0) {

+  // Reset the drop flags for all spatial layers, on the

+  // first_spatial_layer_to_encode.

+  if (svc->spatial_layer_id == svc->first_spatial_layer_to_encode) {

     vp9_zero(svc->drop_spatial_layer);

     // TODO(jianj/marpan): Investigate why setting svc->lst/gld/alt_fb_idx

     // causes an issue with frame dropping and temporal layers, when the frame