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
19 extern "C" {
20 #endif
21
22 typedef struct mv {
23 int16_t row;
24 int16_t col;
25 } MV;
26
27 typedef union int_mv {
28 uint32_t as_int;
29 MV as_mv;
30 } int_mv; /* facilitates faster equality tests and copies */
31
32 typedef struct mv32 {
33 int32_t row;
34 int32_t col;
35 } MV32;
36
is_zero_mv(const MV * mv)37 static INLINE int is_zero_mv(const MV *mv) {
38 return *((const uint32_t *)mv) == 0;
39 }
40
is_equal_mv(const MV * a,const MV * b)41 static INLINE int is_equal_mv(const MV *a, const MV *b) {
42 return *((const uint32_t *)a) == *((const uint32_t *)b);
43 }
44
clamp_mv(MV * mv,int min_col,int max_col,int min_row,int max_row)45 static INLINE void clamp_mv(MV *mv, int min_col, int max_col, int min_row,
46 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