commit 7266bedc041b4bbc3e823226f14d70e97892d959
author Marco <marpan@chromium.org> Thu Oct 01 15:46:06 2015 -0700
committer Marco <marpan@chromium.org> Tue Oct 06 08:56:15 2015 -0700
tree 4f920c345dae309f173717f8f9c9f0e6730d279b
parent b2120948391f8beb7ff74bd46b83da1ff2020f49

Add first_spatial_layer_to_encode to SVC.

Use the existing VP9_SET_SVC control to set the
first spatial layer to encode.

Since we loop over all spatial layers inside the encoder, the
setting of spatial_layer_id via VP9_SET_SVC has no relevance.
Use it instead to set the first_spatial_layer_to_encode,
which allows an application to skip encoding lower layer(s).

Change only affects the 1 pass CBR SVC.

Change-Id: I5d63ab713c3e250fdf42c637f38d5ec8f60cd1fb