shithub: libvpx

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Skip ACL recode loop for intermediate ARF layers

Speed up the encoding time by ~20% for multi-layer ARF system.

Change-Id: I16de1cfed7cd1815cf0269eb4f90ad74fdf087ee

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

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

@@ -4013,9 +4013,9 @@

   set_size_independent_vars(cpi);

-  enable_acl = cpi->sf.allow_acl

-                   ? (cm->frame_type == KEY_FRAME) || (cm->show_frame == 0)

-                   : 0;

+  enable_acl = cpi->sf.allow_acl ? (cm->frame_type == KEY_FRAME) ||

+                                       (cpi->twopass.gf_group.index == 1)

+                                 : 0;

   do {

     vpx_clear_system_state();