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diff --git a/third_party/aom/av1/encoder/encodemv.h b/third_party/aom/av1/encoder/encodemv.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_ENCODER_ENCODEMV_H_
+#define AOM_AV1_ENCODER_ENCODEMV_H_
+
+#include "av1/encoder/encoder.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void av1_encode_mv(AV1_COMP *cpi, aom_writer *w, const MV *mv, const MV *ref,
+ nmv_context *mvctx, int usehp);
+
+void av1_build_nmv_cost_table(int *mvjoint, int *mvcost[2],
+ const nmv_context *mvctx,
+ MvSubpelPrecision precision);
+
+void av1_update_mv_count(ThreadData *td);
+
+void av1_encode_dv(aom_writer *w, const MV *mv, const MV *ref,
+ nmv_context *mvctx);
+int_mv av1_get_ref_mv(const MACROBLOCK *x, int ref_idx);
+int_mv av1_get_ref_mv_from_stack(int ref_idx,
+ const MV_REFERENCE_FRAME *ref_frame,
+ int ref_mv_idx,
+ const MB_MODE_INFO_EXT *mbmi_ext);
+void av1_find_best_ref_mvs_from_stack(int allow_hp,
+ const MB_MODE_INFO_EXT *mbmi_ext,
+ MV_REFERENCE_FRAME ref_frame,
+ int_mv *nearest_mv, int_mv *near_mv,
+ int is_integer);
+
+static INLINE MV_JOINT_TYPE av1_get_mv_joint(const MV *mv) {
+ if (mv->row == 0) {
+ return mv->col == 0 ? MV_JOINT_ZERO : MV_JOINT_HNZVZ;
+ } else {
+ return mv->col == 0 ? MV_JOINT_HZVNZ : MV_JOINT_HNZVNZ;
+ }
+}
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // AOM_AV1_ENCODER_ENCODEMV_H_