commit 2f12340ff0a01b72f0951c54d01e49cd80769bb1
author Debargha Mukherjee <debargha@google.com> Tue Aug 30 17:43:38 2016 -0700
committer Debargha Mukherjee <debargha@google.com> Mon Sep 05 15:06:19 2016 -0700
tree 089bc2f20066ee37cdc7e2b17735e08b5e4aa145
parent 01bade1064e8a77c5f7f03c9aa3aaabe903a41cf

Enable rectangular transforms for UV

Uses an array to map block sizes, y tx sizes, and subsampling
factors to various transform sizes for UV.

Results improve by 0.1-0.2%

Change-Id: Icb58fd96bc7c01a72cbf1332fe2be4d55a0feedc

av1/encoder/encodemb.c

diff --git a/av1/encoder/encodemb.c b/av1/encoder/encodemb.c
index 93ffdaa..5a21ebd 100644
--- a/av1/encoder/encodemb.c
+++ b/av1/encoder/encodemb.c
@@ -871,9 +871,9 @@
 
   if (blk_row >= max_blocks_high || blk_col >= max_blocks_wide) return;
 
-  plane_tx_size = plane ? get_uv_tx_size_impl(
-                              mbmi->inter_tx_size[tx_row][tx_col], bsize, 0, 0)
-                        : mbmi->inter_tx_size[tx_row][tx_col];
+  plane_tx_size =
+      plane ? uv_txsize_lookup[bsize][mbmi->inter_tx_size[tx_row][tx_col]][0][0]
+            : mbmi->inter_tx_size[tx_row][tx_col];
 
   if (tx_size == plane_tx_size) {
     encode_block(plane, block, blk_row, blk_col, plane_bsize, tx_size, arg);