1/*
2 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#ifndef VP9_COMMON_VP9_MV_H_
12#define VP9_COMMON_VP9_MV_H_
13
14#include "vpx/vpx_integer.h"
15
16#include "vp9/common/vp9_common.h"
17
18#ifdef __cplusplus
19extern "C" {
20#endif
21
22typedef struct mv {
23  int16_t row;
24  int16_t col;
25} MV;
26
27typedef union int_mv {
28  uint32_t as_int;
29  MV as_mv;
30} int_mv; /* facilitates faster equality tests and copies */
31
32typedef struct mv32 {
33  int32_t row;
34  int32_t col;
35} MV32;
36
37static INLINE int is_zero_mv(const MV *mv) {
38  return *((const uint32_t *)mv) == 0;
39}
40
41static INLINE int is_equal_mv(const MV *a, const MV *b) {
42  return  *((const uint32_t *)a) == *((const uint32_t *)b);
43}
44
45static INLINE void clamp_mv(MV *mv, int min_col, int max_col,
46                            int min_row, int max_row) {
47  mv->col = clamp(mv->col, min_col, max_col);
48  mv->row = clamp(mv->row, min_row, max_row);
49}
50
51#ifdef __cplusplus
52}  // extern "C"
53#endif
54
55#endif  // VP9_COMMON_VP9_MV_H_
56