commit 3748bc2aee8955bcb41b7c115c02825ba6494edc
author Hui Su <huisu@google.com> Wed Aug 23 11:30:41 2017 -0700
committer Hui Su <huisu@google.com> Fri Sep 08 05:16:42 2017 +0000
tree 5ebb9b0c0eb11d25d040ad38151078f49d491bd3
parent 1ddf2314c9dfb37072b0a233309b5b0b0d94402f

palette-delta-encoding: remove dependency on above SB row

Do not refer to above MB when on SB boundary. This helps to
reduce line buffer.

Keyframe coding gain on the screen_content testset drops from
1.28% to 1.20%.

Change-Id: I4b06fd137d6c9ea68d618035381f09d0746ba9e8

av1/encoder/rdopt.c

diff --git a/av1/encoder/rdopt.c b/av1/encoder/rdopt.c
index 38c3e8e..ad9ef73 100644
--- a/av1/encoder/rdopt.c
+++ b/av1/encoder/rdopt.c
@@ -3051,11 +3051,8 @@
     if (rows * cols > PALETTE_MAX_BLOCK_SIZE) return 0;
 
 #if CONFIG_PALETTE_DELTA_ENCODING
-    const MODE_INFO *above_mi = xd->above_mi;
-    const MODE_INFO *left_mi = xd->left_mi;
     uint16_t color_cache[2 * PALETTE_MAX_SIZE];
-    const int n_cache =
-        av1_get_palette_cache(above_mi, left_mi, 0, color_cache);
+    const int n_cache = av1_get_palette_cache(xd, 0, color_cache);
 #endif  // CONFIG_PALETTE_DELTA_ENCODING
 
     for (n = colors > PALETTE_MAX_SIZE ? PALETTE_MAX_SIZE : colors; n >= 2;
@@ -5526,10 +5523,8 @@
 #endif  // CONFIG_HIGHBITDEPTH
 
 #if CONFIG_PALETTE_DELTA_ENCODING
-  const MODE_INFO *above_mi = xd->above_mi;
-  const MODE_INFO *left_mi = xd->left_mi;
   uint16_t color_cache[2 * PALETTE_MAX_SIZE];
-  const int n_cache = av1_get_palette_cache(above_mi, left_mi, 1, color_cache);
+  const int n_cache = av1_get_palette_cache(xd, 1, color_cache);
 #endif  // CONFIG_PALETTE_DELTA_ENCODING
 
   colors = colors_u > colors_v ? colors_u : colors_v;