commit cabd989218f5d15ff96a3ad2372ce3cf77dbfab7
author Jingning Han <jingning@google.com> Thu Dec 01 12:28:42 2016 -0800
committer Jingning Han <jingning@google.com> Fri Dec 02 01:46:59 2016 +0000
tree 1f661b9faf41a8931a32e2a49518f3ca3d1c0d83
parent 997ed8147cd573310447c8291c6d48e6f077372a

Modify the uv block tx_size mapping table

If the coding block size is 4x4, map the uv transform block size
to 2x2 in non-444 format.

Change-Id: I5767df7c6c1f73938f97745d604207caad6f7d68

av1/common/blockd.h

diff --git a/av1/common/blockd.h b/av1/common/blockd.h
index 3ca8190..2f3e846 100644
--- a/av1/common/blockd.h
+++ b/av1/common/blockd.h
@@ -825,6 +825,11 @@
     return uvsupertx_size_lookup[txsize_sqr_map[mbmi->tx_size]]
                                 [pd->subsampling_x][pd->subsampling_y];
 #endif  // CONFIG_SUPERTX
+
+#if CONFIG_CB4X4
+  assert(mbmi->tx_size > TX_2X2);
+#endif
+
   uv_txsize = uv_txsize_lookup[mbmi->sb_type][mbmi->tx_size][pd->subsampling_x]
                               [pd->subsampling_y];
   assert(uv_txsize != TX_INVALID);