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 37 static INLINE int is_zero_mv(const MV *mv) { 38 return *((const uint32_t *)mv) == 0; 39 } 40 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 45 static 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
