shithub: libvpx

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Enable tpl model to support multi-layer ARF

Enable temporal dependency model for the base layer ARF. It
improves the multi-layer ARF compression performance (results
are tested in speed 0 vbr mode):

         avg PSNR    overall PSNR     SSIM
lowres   -0.40%       -0.46%         -0.32%
midres   -0.59%       -0.68%         -0.45%
720p     -0.55%       -0.59%         -1.07%

Change-Id: I7790b89ccfb6e61f9b7965f34d348c7440220dd0

--- a/vp9/encoder/vp9_encodeframe.c

+++ b/vp9/encoder/vp9_encodeframe.c

@@ -3561,7 +3561,8 @@

 int get_rdmult_delta(VP9_COMP *cpi, BLOCK_SIZE bsize, int mi_row, int mi_col,

                      int orig_rdmult) {

-  TplDepFrame *tpl_frame = &cpi->tpl_stats[cpi->twopass.gf_group.index];

+  const int gf_group_index = cpi->twopass.gf_group.index;

+  TplDepFrame *tpl_frame = &cpi->tpl_stats[gf_group_index];

   TplDepStats *tpl_stats = tpl_frame->tpl_stats_ptr;

   int tpl_stride = tpl_frame->stride;

   int64_t intra_cost = 0;

@@ -3576,9 +3577,9 @@

   if (tpl_frame->is_valid == 0) return orig_rdmult;

-  if (cpi->common.show_frame) return orig_rdmult;

+  if (cpi->twopass.gf_group.layer_depth[gf_group_index] > 1) return orig_rdmult;

-  if (cpi->twopass.gf_group.index >= MAX_ARF_GOP_SIZE) return orig_rdmult;

+  if (gf_group_index >= MAX_ARF_GOP_SIZE) return orig_rdmult;

   for (row = mi_row; row < mi_row + mi_high; ++row) {

     for (col = mi_col; col < mi_col + mi_wide; ++col) {