Increase maximum layer depth allowed in a GOP

Allow maximum 5 ARF layers to support GOP of size 32.

STATS_CHANGED

Change-Id: I2b53c7eeda0442967eb93d32c5f5522ea84001fb
diff --git a/av1/encoder/encode_strategy.c b/av1/encoder/encode_strategy.c
index 31463fb..3b87b41 100644
--- a/av1/encoder/encode_strategy.c
+++ b/av1/encoder/encode_strategy.c
@@ -814,6 +814,10 @@
           refresh_mask =
               1 << ref_buffer_stack
                        ->lst_stack[ref_buffer_stack->lst_stack_size - 1];
+        else if (ref_buffer_stack->gld_stack_size >= 2)
+          refresh_mask =
+              1 << ref_buffer_stack
+                       ->gld_stack[ref_buffer_stack->gld_stack_size - 1];
         else
           assert(0 && "No ref map index found");
       }
diff --git a/av1/encoder/encoder.h b/av1/encoder/encoder.h
index 1233977..13e6348 100644
--- a/av1/encoder/encoder.h
+++ b/av1/encoder/encoder.h
@@ -163,7 +163,7 @@
 } UENUM1BYTE(SS_CFG_OFFSET);
 
 // TODO(jingning): This needs to be cleaned up next.
-#define MAX_LENGTH_TPL_FRAME_STATS (50 + 9)
+#define MAX_LENGTH_TPL_FRAME_STATS (70 + 9)
 
 typedef struct TplDepStats {
   int64_t intra_cost;
diff --git a/av1/encoder/firstpass.h b/av1/encoder/firstpass.h
index 1cada53..cf48007 100644
--- a/av1/encoder/firstpass.h
+++ b/av1/encoder/firstpass.h
@@ -30,7 +30,7 @@
 
 #define VLOW_MOTION_THRESHOLD 950
 
-#define MAX_ARF_LAYERS 5
+#define MAX_ARF_LAYERS 6
 
 typedef struct {
   // Frame number in display order, if stats are for a single frame.
diff --git a/av1/encoder/pass2_strategy.c b/av1/encoder/pass2_strategy.c
index ef3564e..19d1602 100644
--- a/av1/encoder/pass2_strategy.c
+++ b/av1/encoder/pass2_strategy.c
@@ -1574,7 +1574,7 @@
     rc->gfu_boost = av1_calc_arf_boost(twopass, rc, frame_info, alt_offset,
                                        forward_frames, (i - 1));
     rc->source_alt_ref_pending = 1;
-    gf_group->max_layer_depth_allowed = cpi->oxcf.gf_max_pyr_height;
+    gf_group->max_layer_depth_allowed = MAX_ARF_LAYERS - 1;
   } else {
     reset_fpf_position(twopass, start_pos);
     rc->gfu_boost = AOMMIN(