diff --git a/libavcodec/av1.h b/libavcodec/av1.h
index 0f99ae4829..951a18ecb2 100644
--- a/libavcodec/av1.h
+++ b/libavcodec/av1.h
@@ -114,6 +114,13 @@ enum {
     AV1_WARP_MODEL_TRANSLATION = 1,
     AV1_WARP_MODEL_ROTZOOM     = 2,
     AV1_WARP_MODEL_AFFINE      = 3,
+    AV1_WARP_PARAM_REDUCE_BITS = 6,
+
+    AV1_DIV_LUT_BITS      = 8,
+    AV1_DIV_LUT_PREC_BITS = 14,
+    AV1_DIV_LUT_NUM       = 257,
+
+    AV1_MAX_LOOP_FILTER = 63,
 };