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diff --git a/media/libaom/src/av1/common/cdef.h b/media/libaom/src/av1/common/cdef.h
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+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+#ifndef AOM_AV1_COMMON_CDEF_H_
+#define AOM_AV1_COMMON_CDEF_H_
+
+#define CDEF_STRENGTH_BITS 6
+
+#define CDEF_PRI_STRENGTHS 16
+#define CDEF_SEC_STRENGTHS 4
+
+#include "config/aom_config.h"
+
+#include "aom/aom_integer.h"
+#include "aom_ports/mem.h"
+#include "av1/common/cdef_block.h"
+#include "av1/common/onyxc_int.h"
+
+static INLINE int sign(int i) { return i < 0 ? -1 : 1; }
+
+static INLINE int constrain(int diff, int threshold, int damping) {
+ if (!threshold) return 0;
+
+ const int shift = AOMMAX(0, damping - get_msb(threshold));
+ return sign(diff) *
+ AOMMIN(abs(diff), AOMMAX(0, threshold - (abs(diff) >> shift)));
+}
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int sb_all_skip(const AV1_COMMON *const cm, int mi_row, int mi_col);
+int sb_compute_cdef_list(const AV1_COMMON *const cm, int mi_row, int mi_col,
+ cdef_list *dlist, BLOCK_SIZE bsize);
+void av1_cdef_frame(YV12_BUFFER_CONFIG *frame, AV1_COMMON *cm, MACROBLOCKD *xd);
+
+void av1_cdef_search(YV12_BUFFER_CONFIG *frame, const YV12_BUFFER_CONFIG *ref,
+ AV1_COMMON *cm, MACROBLOCKD *xd, int fast);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+#endif // AOM_AV1_COMMON_CDEF_H_