commit ce7272d2d00f224475849c1b1bca0a97b70ea0c4
author Thomas Davies <thdavies@cisco.com> Tue Jul 04 16:11:08 2017 +0100
committer Thomas Davies <thdavies@cisco.com> Tue Jul 11 05:59:58 2017 +0000
tree 19f89e964d9b96aca19246e17654fa6b725f42da
parent 04e5aa7f3a73078b57c9fc25eedea1e9155605b5

NEW_MULTISYMBOL: use CDFs for palette tree coding.

AWCY results, 1 frame, tune-content=1

objective-1-fast:
PSNR (Y, Cb, Cr) : -0.26%, -0.24%, -0.26%
PSNR-HVS         : -0.26%
MS-SSIM          : -0.25%

screenshots:
PSNR (Y, Cb, Cr) :  -2.28%, -2.29%, -2.29%
PSNR-HVS         :  -2.30%
MS-SSIM          :  -2.26%

twitch-1 :
PSNR (Y, Cb, Cr) : -0.73%, -0.73%, -0.73%
PSNR-HVS         : -0.75%
MS-SSIM          : -0.74%

Change-Id: I7aac475710ab3895778d7ff05d9113f5713133b1

av1/decoder/decodemv.c

diff --git a/av1/decoder/decodemv.c b/av1/decoder/decodemv.c
index 9f42d06..b2b93e6 100644
--- a/av1/decoder/decodemv.c
+++ b/av1/decoder/decodemv.c
@@ -825,10 +825,17 @@
                                                    [palette_y_mode_ctx],
                  ACCT_STR)) {
       pmi->palette_size[0] =
+#if CONFIG_NEW_MULTISYMBOL
+          aom_read_symbol(r,
+                          xd->tile_ctx->palette_y_size_cdf[bsize - BLOCK_8X8],
+                          PALETTE_SIZES, ACCT_STR) +
+          2;
+#else
           aom_read_tree(r, av1_palette_size_tree,
                         av1_default_palette_y_size_prob[bsize - BLOCK_8X8],
                         ACCT_STR) +
           2;
+#endif
       n = pmi->palette_size[0];
 #if CONFIG_PALETTE_DELTA_ENCODING
       read_palette_colors_y(xd, cm->bit_depth, pmi, r);
@@ -847,10 +854,17 @@
     if (aom_read(r, av1_default_palette_uv_mode_prob[palette_uv_mode_ctx],
                  ACCT_STR)) {
       pmi->palette_size[1] =
+#if CONFIG_NEW_MULTISYMBOL
+          aom_read_symbol(r,
+                          xd->tile_ctx->palette_uv_size_cdf[bsize - BLOCK_8X8],
+                          PALETTE_SIZES, ACCT_STR) +
+          2;
+#else
           aom_read_tree(r, av1_palette_size_tree,
                         av1_default_palette_uv_size_prob[bsize - BLOCK_8X8],
                         ACCT_STR) +
           2;
+#endif
       n = pmi->palette_size[1];
 #if CONFIG_PALETTE_DELTA_ENCODING
       read_palette_colors_uv(xd, cm->bit_depth, pmi, r);