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/*
* 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 VPX_VP9_COMMON_VP9_MV_H_
#define VPX_VP9_COMMON_VP9_MV_H_
#include "vpx/vpx_integer.h"
#include "vp9/common/vp9_common.h"
#ifdef __cplusplus
extern "C" {
#endif
#define INVALID_MV 0x80008000
typedef struct mv {
int16_t row;
int16_t col;
} MV;
typedef union int_mv {
uint32_t as_int;
MV as_mv;
} int_mv; /* facilitates faster equality tests and copies */
typedef struct mv32 {
int32_t row;
int32_t col;
} MV32;
static INLINE int is_zero_mv(const MV *mv) {
return *((const uint32_t *)mv) == 0;
}
static INLINE int is_equal_mv(const MV *a, const MV *b) {
return *((const uint32_t *)a) == *((const uint32_t *)b);
}
static INLINE void clamp_mv(MV *mv, int min_col, int max_col, int min_row,
int max_row) {
mv->col = clamp(mv->col, min_col, max_col);
mv->row = clamp(mv->row, min_row, max_row);
}
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_VP9_COMMON_VP9_MV_H_
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