diff --git a/av1/encoder/picklpf.h b/av1/encoder/picklpf.h
new file mode 100644
index 0000000..cd8afc6
--- /dev/null
+++ b/av1/encoder/picklpf.h
@@ -0,0 +1,31 @@
+/*
+ *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef VP10_ENCODER_PICKLPF_H_
+#define VP10_ENCODER_PICKLPF_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "av1/encoder/encoder.h"
+
+struct yv12_buffer_config;
+struct VP10_COMP;
+int vp10_get_max_filter_level(const VP10_COMP *cpi);
+int vp10_search_filter_level(const YV12_BUFFER_CONFIG *sd, VP10_COMP *cpi,
+                             int partial_frame, double *err);
+void vp10_pick_filter_level(const struct yv12_buffer_config *sd,
+                            struct VP10_COMP *cpi, LPF_PICK_METHOD method);
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VP10_ENCODER_PICKLPF_H_