1 /*
2 * By downloading, copying, installing or using the software you agree to this license.
3 * If you do not agree to this license, do not download, install,
4 * copy or use the software.
5 *
6 *
7 * License Agreement
8 * For Open Source Computer Vision Library
9 * (3-clause BSD License)
10 *
11 * Copyright (C) 2014-2015, NVIDIA Corporation, all rights reserved.
12 * Third party copyrights are property of their respective owners.
13 *
14 * Redistribution and use in source and binary forms, with or without modification,
15 * are permitted provided that the following conditions are met:
16 *
17 * * Redistributions of source code must retain the above copyright notice,
18 * this list of conditions and the following disclaimer.
19 *
20 * * Redistributions in binary form must reproduce the above copyright notice,
21 * this list of conditions and the following disclaimer in the documentation
22 * and/or other materials provided with the distribution.
23 *
24 * * Neither the names of the copyright holders nor the names of the contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
27 *
28 * This software is provided by the copyright holders and contributors "as is" and
29 * any express or implied warranties, including, but not limited to, the implied
30 * warranties of merchantability and fitness for a particular purpose are disclaimed.
31 * In no event shall copyright holders or contributors be liable for any direct,
32 * indirect, incidental, special, exemplary, or consequential damages
33 * (including, but not limited to, procurement of substitute goods or services;
34 * loss of use, data, or profits; or business interruption) however caused
35 * and on any theory of liability, whether in contract, strict liability,
36 * or tort (including negligence or otherwise) arising in any way out of
37 * the use of this software, even if advised of the possibility of such damage.
38 */
39
40 #ifndef CAROTENE_SRC_COMMON_HPP
41 #define CAROTENE_SRC_COMMON_HPP
42
43 #include <cstddef>
44 #include <cstdlib>
45 #include <algorithm>
46
47 #if defined WITH_NEON && (defined __ARM_NEON__ || defined __ARM_NEON)
48 #define CAROTENE_NEON
49 #endif
50
51 #ifdef CAROTENE_NEON
52 #include <arm_neon.h>
53 #include "intrinsics.hpp"
54 #endif
55
56 #include <carotene/functions.hpp>
57 #include "saturate_cast.hpp"
58
59 namespace CAROTENE_NS { namespace internal {
60
prefetch(const void * ptr,size_t offset=32* 10)61 inline void prefetch(const void *ptr, size_t offset = 32*10)
62 {
63 #if defined __GNUC__
64 __builtin_prefetch(reinterpret_cast<const char*>(ptr) + offset);
65 #elif defined _MSC_VER && defined CAROTENE_NEON
66 __prefetch(reinterpret_cast<const char*>(ptr) + offset);
67 #else
68 (void)ptr;
69 (void)offset;
70 #endif
71 }
72
73 template <typename T>
getRowPtr(T * base,ptrdiff_t stride,size_t row)74 inline T *getRowPtr(T *base, ptrdiff_t stride, size_t row)
75 {
76 char *baseRaw = const_cast<char *>(reinterpret_cast<const char *>(base));
77 return reinterpret_cast<T *>(baseRaw + ptrdiff_t(row) * stride);
78 }
79
80 void assertSupportedConfiguration(bool parametersSupported = true);
81
82 ptrdiff_t borderInterpolate(ptrdiff_t _p, size_t _len, BORDER_MODE borderType, size_t startMargin = 0, size_t endMargin = 0);
83
84 /*!
85 * Aligns pointer by the certain number of bytes
86 *
87 * This small inline function aligns the pointer by the certain number of bytes by shifting
88 * it forward by 0 or a positive offset.
89 */
alignPtr(T * ptr,size_t n=sizeof (T))90 template<typename T> inline T* alignPtr(T* ptr, size_t n=sizeof(T))
91 {
92 return (T*)(((size_t)ptr + n-1) & -n);
93 }
94
95 }}
96
97 #endif
98