EC_ADAPT: use tile context for coefficients.

Change-Id: I61433d0c0bbab9b7cf74a405cbedd60965318888

av1/decoder/detokenize.c

@@ -80,7 +80,11 @@ static int decode_coefs(MACROBLOCKD *xd, PLANE_TYPE type, tran_low_t *dqcoeff,
   aom_prob(*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
       fc->coef_probs[tx_size_ctx][type][ref];
   const aom_prob *prob;
-#if CONFIG_EC_MULTISYMBOL
+#if CONFIG_EC_ADAPT
+  aom_cdf_prob(*coef_cdfs)[COEFF_CONTEXTS][ENTROPY_TOKENS] =
+      xd->tile_ctx->coef_cdfs[tx_size][type][ref];
+  aom_cdf_prob(*cdf)[ENTROPY_TOKENS];
+#elif CONFIG_EC_MULTISYMBOL
   aom_cdf_prob(*coef_cdfs)[COEFF_CONTEXTS][ENTROPY_TOKENS] =
       fc->coef_cdfs[tx_size_ctx][type][ref];
   aom_cdf_prob(*cdf)[ENTROPY_TOKENS];

av1/encoder/tokenize.c

@@ -463,7 +463,11 @@ static void tokenize_b(int plane, int block, int blk_row, int blk_col,
   aom_prob(*const coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
       cpi->common.fc->coef_probs[txsize_sqr_map[tx_size]][type][ref];
 #endif  // CONFIG_ENTROPY
-#if CONFIG_EC_MULTISYMBOL
+
+#if CONFIG_EC_ADAPT  // use per-tile context
+  aom_cdf_prob(*const coef_cdfs)[COEFF_CONTEXTS][ENTROPY_TOKENS] =
+      xd->tile_ctx->coef_cdfs[tx_size][type][ref];
+#elif CONFIG_EC_MULTISYMBOL
   aom_cdf_prob(*const coef_cdfs)[COEFF_CONTEXTS][ENTROPY_TOKENS] =
       cpi->common.fc->coef_cdfs[tx_size][type][ref];
 #endif