65 lines
4.3 KiB
C++
65 lines
4.3 KiB
C++
// fbc_cv is free software and uses the same licence as OpenCV
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// Email: fengbingchun@163.com
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#ifndef FBC_CV_CORE_SATURATE_HPP_
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#define FBC_CV_CORE_SATURATE_HPP_
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// reference: include/opencv2/core/saturate.hpp
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#include <algorithm>
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#include <limits.h>
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#include "fbcdef.hpp"
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#include "interface.hpp"
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#include "fast_math.hpp"
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namespace yt_tinycv
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{
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template<typename _Tp> static inline _Tp saturate_cast(uchar v) { return _Tp(v); }
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template<typename _Tp> static inline _Tp saturate_cast(schar v) { return _Tp(v); }
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template<typename _Tp> static inline _Tp saturate_cast(ushort v) { return _Tp(v); }
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template<typename _Tp> static inline _Tp saturate_cast(short v) { return _Tp(v); }
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template<typename _Tp> static inline _Tp saturate_cast(unsigned int v) { return _Tp(v); }
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template<typename _Tp> static inline _Tp saturate_cast(int v) { return _Tp(v); }
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template<typename _Tp> static inline _Tp saturate_cast(float v) { return _Tp(v); }
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template<typename _Tp> static inline _Tp saturate_cast(double v) { return _Tp(v); }
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template<> inline uchar saturate_cast<uchar>(schar v) { return (uchar)std::max((int)v, 0); }
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template<> inline uchar saturate_cast<uchar>(ushort v) { return (uchar)std::min((unsigned)v, (unsigned)UCHAR_MAX); }
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template<> inline uchar saturate_cast<uchar>(int v) { return (uchar)((unsigned)v <= UCHAR_MAX ? v : v > 0 ? UCHAR_MAX : 0); }
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template<> inline uchar saturate_cast<uchar>(short v) { return saturate_cast<uchar>((int)v); }
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template<> inline uchar saturate_cast<uchar>(unsigned int v) { return (uchar)std::min(v, (unsigned)UCHAR_MAX); }
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template<> inline uchar saturate_cast<uchar>(float v) { int iv = fbcRound(v); return saturate_cast<uchar>(iv); }
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template<> inline uchar saturate_cast<uchar>(double v) { int iv = fbcRound(v); return saturate_cast<uchar>(iv); }
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template<> inline schar saturate_cast<schar>(uchar v) { return (schar)std::min((int)v, SCHAR_MAX); }
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template<> inline schar saturate_cast<schar>(ushort v) { return (schar)std::min((unsigned)v, (unsigned)SCHAR_MAX); }
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template<> inline schar saturate_cast<schar>(int v) { return (schar)((unsigned)(v-SCHAR_MIN) <= (unsigned)UCHAR_MAX ? v : v > 0 ? SCHAR_MAX : SCHAR_MIN); }
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template<> inline schar saturate_cast<schar>(short v) { return saturate_cast<schar>((int)v); }
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template<> inline schar saturate_cast<schar>(unsigned v) { return (schar)std::min(v, (unsigned)SCHAR_MAX); }
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template<> inline schar saturate_cast<schar>(float v) { int iv = fbcRound(v); return saturate_cast<schar>(iv); }
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template<> inline schar saturate_cast<schar>(double v) { int iv = fbcRound(v); return saturate_cast<schar>(iv); }
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template<> inline ushort saturate_cast<ushort>(schar v) { return (ushort)std::max((int)v, 0); }
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template<> inline ushort saturate_cast<ushort>(short v) { return (ushort)std::max((int)v, 0); }
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template<> inline ushort saturate_cast<ushort>(int v) { return (ushort)((unsigned)v <= (unsigned)USHRT_MAX ? v : v > 0 ? USHRT_MAX : 0); }
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template<> inline ushort saturate_cast<ushort>(unsigned v) { return (ushort)std::min(v, (unsigned)USHRT_MAX); }
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template<> inline ushort saturate_cast<ushort>(float v) { int iv = fbcRound(v); return saturate_cast<ushort>(iv); }
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template<> inline ushort saturate_cast<ushort>(double v) { int iv = fbcRound(v); return saturate_cast<ushort>(iv); }
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template<> inline short saturate_cast<short>(ushort v) { return (short)std::min((int)v, SHRT_MAX); }
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template<> inline short saturate_cast<short>(int v) { return (short)((unsigned)(v - SHRT_MIN) <= (unsigned)USHRT_MAX ? v : v > 0 ? SHRT_MAX : SHRT_MIN); }
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template<> inline short saturate_cast<short>(unsigned v) { return (short)std::min(v, (unsigned)SHRT_MAX); }
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template<> inline short saturate_cast<short>(float v) { int iv = fbcRound(v); return saturate_cast<short>(iv); }
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template<> inline short saturate_cast<short>(double v) { int iv = fbcRound(v); return saturate_cast<short>(iv); }
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template<> inline int saturate_cast<int>(float v) { return fbcRound(v); }
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template<> inline int saturate_cast<int>(double v) { return fbcRound(v); }
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template<> inline unsigned saturate_cast<unsigned>(float v) { return fbcRound(v); }
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template<> inline unsigned saturate_cast<unsigned>(double v) { return fbcRound(v); }
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} // yt_tinycv
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#endif // FBC_CV_CORE_SATURATE_HPP_
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