[CFL] Add support for intra in inter

Change-Id: I4d8485d2bbe5348338eb909d969a0ca4b598a6b8

av1/decoder/decodemv.c

diff --git a/av1/decoder/decodemv.c b/av1/decoder/decodemv.c
index d155435..003a76c 100644
--- a/av1/decoder/decodemv.c
+++ b/av1/decoder/decodemv.c
@@ -1543,7 +1543,7 @@
 
 #if CONFIG_CB4X4
   if (is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x,
-                          xd->plane[1].subsampling_y))
+                          xd->plane[1].subsampling_y)) {
     mbmi->uv_mode = read_intra_mode_uv(cm, xd, r, mbmi->mode);
 #else
   mbmi->uv_mode = read_intra_mode_uv(cm, xd, r, mbmi->mode);
@@ -1551,6 +1551,23 @@
   (void)mi_col;
 #endif
 
+#if CONFIG_CFL
+    // TODO(ltrudeau) support PALETTE
+    if (mbmi->uv_mode == DC_PRED) {
+      mbmi->cfl_alpha_idx = read_cfl_alphas(
+#if CONFIG_EC_ADAPT
+          xd->tile_ctx,
+#else
+          cm->fc,
+#endif  // CONFIG_EC_ADAPT
+          r, mbmi->skip, mbmi->cfl_alpha_signs);
+    }
+#endif  // CONFIG_CFL
+
+#if CONFIG_CB4X4
+  }
+#endif
+
 #if CONFIG_EXT_INTRA
   read_intra_angle_info(cm, xd, r);
 #endif  // CONFIG_EXT_INTRA

av1/encoder/bitstream.c

diff --git a/av1/encoder/bitstream.c b/av1/encoder/bitstream.c
index 913ac2e..eb444d7 100644
--- a/av1/encoder/bitstream.c
+++ b/av1/encoder/bitstream.c
@@ -1907,12 +1907,23 @@
     }
 #if CONFIG_CB4X4
     if (is_chroma_reference(mi_row, mi_col, bsize, xd->plane[1].subsampling_x,
-                            xd->plane[1].subsampling_y))
+                            xd->plane[1].subsampling_y)) {
       write_intra_uv_mode(ec_ctx, mbmi->uv_mode, mode, w);
 #else  // !CONFIG_CB4X4
     write_intra_uv_mode(ec_ctx, mbmi->uv_mode, mode, w);
 #endif  // CONFIG_CB4X4
 
+#if CONFIG_CFL
+      if (mbmi->uv_mode == DC_PRED) {
+        write_cfl_alphas(ec_ctx, mbmi->skip, mbmi->cfl_alpha_idx,
+                         mbmi->cfl_alpha_signs, w);
+      }
+#endif
+
+#if CONFIG_CB4X4
+    }
+#endif
+
 #if CONFIG_EXT_INTRA
     write_intra_angle_info(xd, ec_ctx, w);
 #endif  // CONFIG_EXT_INTRA