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Open Source Computer Vision Library
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108 lines
3.7 KiB
108 lines
3.7 KiB
/* |
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* By downloading, copying, installing or using the software you agree to this license. |
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* If you do not agree to this license, do not download, install, |
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* copy or use the software. |
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* |
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* |
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* License Agreement |
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* For Open Source Computer Vision Library |
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* (3-clause BSD License) |
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* |
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* Copyright (C) 2014, NVIDIA Corporation, all rights reserved. |
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* Third party copyrights are property of their respective owners. |
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* |
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* Redistribution and use in source and binary forms, with or without modification, |
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* are permitted provided that the following conditions are met: |
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* |
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* * Redistributions of source code must retain the above copyright notice, |
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* this list of conditions and the following disclaimer. |
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* |
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* * Redistributions in binary form must reproduce the above copyright notice, |
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* this list of conditions and the following disclaimer in the documentation |
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* and/or other materials provided with the distribution. |
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* |
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* * Neither the names of the copyright holders nor the names of the contributors |
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* may be used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* This software is provided by the copyright holders and contributors "as is" and |
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* any express or implied warranties, including, but not limited to, the implied |
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* warranties of merchantability and fitness for a particular purpose are disclaimed. |
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* In no event shall copyright holders or contributors be liable for any direct, |
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* indirect, incidental, special, exemplary, or consequential damages |
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* (including, but not limited to, procurement of substitute goods or services; |
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* loss of use, data, or profits; or business interruption) however caused |
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* and on any theory of liability, whether in contract, strict liability, |
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* or tort (including negligence or otherwise) arising in any way out of |
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* the use of this software, even if advised of the possibility of such damage. |
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*/ |
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#include <cstdlib> |
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#include <iostream> |
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#include "common.hpp" |
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namespace CAROTENE_NS { |
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bool isSupportedConfiguration() |
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{ |
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#ifdef CAROTENE_NEON |
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return true; |
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#else |
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return false; |
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#endif |
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} |
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namespace internal { |
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void assertSupportedConfiguration(bool parametersSupported) |
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{ |
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if (!isSupportedConfiguration()) { |
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std::cerr << "internal error: attempted to use an unavailable function" << std::endl; |
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std::abort(); |
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} |
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if (!parametersSupported) { |
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std::cerr << "internal error: attempted to use a function with unsupported parameters" << std::endl; |
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std::abort(); |
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} |
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} |
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ptrdiff_t borderInterpolate(ptrdiff_t _p, size_t _len, BORDER_MODE borderType, size_t startMargin, size_t endMargin) |
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{ |
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ptrdiff_t p = _p + (ptrdiff_t)startMargin; |
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size_t len = _len + startMargin + endMargin; |
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if( (size_t)p < len ) |
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return _p; |
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else if( borderType == BORDER_MODE_REPLICATE ) |
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p = p < 0 ? 0 : (ptrdiff_t)len - 1; |
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else if( borderType == BORDER_MODE_REFLECT || borderType == BORDER_MODE_REFLECT101 ) |
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{ |
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s32 delta = borderType == BORDER_MODE_REFLECT101; |
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if( len == 1 ) |
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return 0; |
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do |
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{ |
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if( p < 0 ) |
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p = -p - 1 + delta; |
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else |
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p = (ptrdiff_t)len - 1 - (p - (ptrdiff_t)len) - delta; |
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} |
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while( (size_t)p >= len ); |
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} |
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else if( borderType == BORDER_MODE_WRAP ) |
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{ |
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if( p < 0 ) |
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p -= ((p-(ptrdiff_t)len+1)/(ptrdiff_t)len)*(ptrdiff_t)len; |
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if( p >= (ptrdiff_t)len ) |
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p %= (ptrdiff_t)len; |
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} |
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else if( borderType == BORDER_MODE_CONSTANT ) |
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p = -1; |
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else |
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internal::assertSupportedConfiguration(false); |
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return p - (ptrdiff_t)startMargin; |
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} |
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} // namespace internal |
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} // namespace CAROTENE_NS
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