From dfe7fdae7d07c289ab2eb70cd6227874f94fbc63 Mon Sep 17 00:00:00 2001
From: Alex Converse <aconverse@google.com>
Date: Wed, 29 Jul 2015 16:53:33 -0700
Subject: [PATCH] Comment zcoeff_blk.

Change-Id: Iefc2eb78e71472ecf51802ec59ff32caef4bd0f4
---
 vp9/encoder/vp9_block.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/vp9/encoder/vp9_block.h b/vp9/encoder/vp9_block.h
index ff447b764..cb5b788ad 100644
--- a/vp9/encoder/vp9_block.h
+++ b/vp9/encoder/vp9_block.h
@@ -100,7 +100,10 @@ struct macroblock {
   int mv_row_min;
   int mv_row_max;
 
+  // Notes transform blocks where no coefficents are coded.
+  // Set during mode selection. Read during block encoding.
   uint8_t zcoeff_blk[TX_SIZES][256];
+
   int skip;
 
   int encode_breakout;