shithub: libvpx

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Track maximum layer depth in a GOP

Track the effective maximum layer depth in a given group of
pictures. Keep it in the GF_GROUP data structure.

Change-Id: If777c4e0f4a871c7226a91e3871f445e92f18b24

--- a/vp9/encoder/vp9_firstpass.c

+++ b/vp9/encoder/vp9_firstpass.c

@@ -2127,6 +2127,7 @@

       gf_group->gfu_boost[*index_counter] = NORMAL_BOOST;

       ++(*index_counter);

     }

+    gf_group->max_layer_depth = VPXMAX(gf_group->max_layer_depth, depth);

     return;

   }

@@ -2189,6 +2190,7 @@

   gf_group->frame_start = cpi->common.current_video_frame;

   gf_group->frame_end = gf_group->frame_start + rc->baseline_gf_interval;

+  gf_group->max_layer_depth = 0;

   // For key frames the frame target rate is already set and it

   // is also the golden frame.

@@ -2206,6 +2208,7 @@

     gf_group->arf_src_offset[frame_index] =

         (unsigned char)(rc->baseline_gf_interval - 1);

     gf_group->frame_gop_index[frame_index] = rc->baseline_gf_interval;

+    gf_group->max_layer_depth = 1;

     ++frame_index;

   }