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, 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 #include <cstdlib>
41 #include <iostream>
42
43 #include "common.hpp"
44
45 namespace CAROTENE_NS {
46
isSupportedConfiguration()47 bool isSupportedConfiguration()
48 {
49 #ifdef CAROTENE_NEON
50 return true;
51 #else
52 return false;
53 #endif
54 }
55
56 namespace internal {
57
assertSupportedConfiguration(bool parametersSupported)58 void assertSupportedConfiguration(bool parametersSupported)
59 {
60 if (!isSupportedConfiguration()) {
61 std::cerr << "internal error: attempted to use an unavailable function" << std::endl;
62 std::abort();
63 }
64
65 if (!parametersSupported) {
66 std::cerr << "internal error: attempted to use a function with unsupported parameters" << std::endl;
67 std::abort();
68 }
69 }
70
borderInterpolate(ptrdiff_t _p,size_t _len,BORDER_MODE borderType,size_t startMargin,size_t endMargin)71 ptrdiff_t borderInterpolate(ptrdiff_t _p, size_t _len, BORDER_MODE borderType, size_t startMargin, size_t endMargin)
72 {
73 ptrdiff_t p = _p + (ptrdiff_t)startMargin;
74 size_t len = _len + startMargin + endMargin;
75 if( (size_t)p < len )
76 return _p;
77 else if( borderType == BORDER_MODE_REPLICATE )
78 p = p < 0 ? 0 : (ptrdiff_t)len - 1;
79 else if( borderType == BORDER_MODE_REFLECT || borderType == BORDER_MODE_REFLECT101 )
80 {
81 s32 delta = borderType == BORDER_MODE_REFLECT101;
82 if( len == 1 )
83 return 0;
84 do
85 {
86 if( p < 0 )
87 p = -p - 1 + delta;
88 else
89 p = (ptrdiff_t)len - 1 - (p - (ptrdiff_t)len) - delta;
90 }
91 while( (size_t)p >= len );
92 }
93 else if( borderType == BORDER_MODE_WRAP )
94 {
95 if( p < 0 )
96 p -= ((p-(ptrdiff_t)len+1)/(ptrdiff_t)len)*(ptrdiff_t)len;
97 if( p >= (ptrdiff_t)len )
98 p %= (ptrdiff_t)len;
99 }
100 else if( borderType == BORDER_MODE_CONSTANT )
101 p = -1;
102 else
103 internal::assertSupportedConfiguration(false);
104 return p - (ptrdiff_t)startMargin;
105 }
106
107 } // namespace internal
108 } // namespace CAROTENE_NS
109