1 /*M/////////////////////////////////////////////////////////////////////////////////////// 2 // 3 // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. 4 // 5 // By downloading, copying, installing or using the software you agree to this license. 6 // If you do not agree to this license, do not download, install, 7 // copy or use the software. 8 // 9 // 10 // License Agreement 11 // For Open Source Computer Vision Library 12 // 13 // Copyright (C) 2000-2008, Intel Corporation, all rights reserved. 14 // Copyright (C) 2009, Willow Garage Inc., all rights reserved. 15 // Third party copyrights are property of their respective owners. 16 // 17 // Redistribution and use in source and binary forms, with or without modification, 18 // are permitted provided that the following conditions are met: 19 // 20 // * Redistribution's of source code must retain the above copyright notice, 21 // this list of conditions and the following disclaimer. 22 // 23 // * Redistribution's in binary form must reproduce the above copyright notice, 24 // this list of conditions and the following disclaimer in the documentation 25 // and/or other materials provided with the distribution. 26 // 27 // * The name of the copyright holders may not be used to endorse or promote products 28 // derived from this software without specific prior written permission. 29 // 30 // This software is provided by the copyright holders and contributors "as is" and 31 // any express or implied warranties, including, but not limited to, the implied 32 // warranties of merchantability and fitness for a particular purpose are disclaimed. 33 // In no event shall the Intel Corporation or contributors be liable for any direct, 34 // indirect, incidental, special, exemplary, or consequential damages 35 // (including, but not limited to, procurement of substitute goods or services; 36 // loss of use, data, or profits; or business interruption) however caused 37 // and on any theory of liability, whether in contract, strict liability, 38 // or tort (including negligence or otherwise) arising in any way out of 39 // the use of this software, even if advised of the possibility of such damage. 40 // 41 //M*/ 42 43 #ifndef __RING_BUFFER_HPP__ 44 #define __RING_BUFFER_HPP__ 45 46 #include "precomp.hpp" 47 48 namespace cv 49 { 50 namespace superres 51 { 52 namespace detail 53 { 54 template <typename T, class A> at(int index,const std::vector<T,A> & items)55 inline const T& at(int index, const std::vector<T, A>& items) 56 { 57 const int len = static_cast<int>(items.size()); 58 if (index < 0) 59 index -= ((index - len + 1) / len) * len; 60 if (index >= len) 61 index %= len; 62 return items[index]; 63 } 64 65 template <typename T, class A> at(int index,std::vector<T,A> & items)66 inline T& at(int index, std::vector<T, A>& items) 67 { 68 const int len = static_cast<int>(items.size()); 69 if (index < 0) 70 index -= ((index - len + 1) / len) * len; 71 if (index >= len) 72 index %= len; 73 return items[index]; 74 } 75 } 76 } 77 } 78 79 #endif // __RING_BUFFER_HPP__ 80