From fc905edb3a0f0330957094b2836ef8bf03573e04 Mon Sep 17 00:00:00 2001
From: Jingning Han <jingning@google.com>
Date: Sat, 25 Aug 2018 21:39:59 -0700
Subject: Build arf index stack

Stack the ARF frame indexes. Use the most recent one as the ARF
reference frame for frame coding.

Change-Id: I88a2202fa5deb2587d861b434d27ab8de0642cf7
---
 vp9/encoder/vp9_firstpass.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'vp9/encoder/vp9_firstpass.h')

diff --git a/vp9/encoder/vp9_firstpass.h b/vp9/encoder/vp9_firstpass.h
index 0a7e1adf7..e1c882df4 100644
--- a/vp9/encoder/vp9_firstpass.h
+++ b/vp9/encoder/vp9_firstpass.h
@@ -143,6 +143,11 @@ typedef struct {
   unsigned char brf_src_offset[MAX_STATIC_GF_GROUP_LENGTH + 2];
   unsigned char bidir_pred_enabled[MAX_STATIC_GF_GROUP_LENGTH + 2];
   int bit_allocation[MAX_STATIC_GF_GROUP_LENGTH + 2];
+
+  // TODO(jingning): The array size of arf_stack could be reduced.
+  int arf_index_stack[MAX_LAG_BUFFERS * 2];
+  int top_arf_idx;
+  int stack_size;
 } GF_GROUP;
 
 typedef struct {
-- 
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