Renesas / opencv-lib

openCV library for Renesas RZ/A

Dependents:   RZ_A2M_Mbed_samples

include/opencv2/core/neon_utils.hpp@0:0e0631af0305, 2021-01-29 (annotated)

Committer:
RyoheiHagimoto
Date:
Fri Jan 29 04:53:38 2021 +0000
Revision:
0:0e0631af0305
copied from https://github.com/d-kato/opencv-lib.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RyoheiHagimoto 0:0e0631af0305 1 /*M///////////////////////////////////////////////////////////////////////////////////////
RyoheiHagimoto 0:0e0631af0305 2 //
RyoheiHagimoto 0:0e0631af0305 3 // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
RyoheiHagimoto 0:0e0631af0305 4 //
RyoheiHagimoto 0:0e0631af0305 5 // By downloading, copying, installing or using the software you agree to this license.
RyoheiHagimoto 0:0e0631af0305 6 // If you do not agree to this license, do not download, install,
RyoheiHagimoto 0:0e0631af0305 7 // copy or use the software.
RyoheiHagimoto 0:0e0631af0305 8 //
RyoheiHagimoto 0:0e0631af0305 9 //
RyoheiHagimoto 0:0e0631af0305 10 // License Agreement
RyoheiHagimoto 0:0e0631af0305 11 // For Open Source Computer Vision Library
RyoheiHagimoto 0:0e0631af0305 12 //
RyoheiHagimoto 0:0e0631af0305 13 // Copyright (C) 2015, Itseez Inc., all rights reserved.
RyoheiHagimoto 0:0e0631af0305 14 // Third party copyrights are property of their respective owners.
RyoheiHagimoto 0:0e0631af0305 15 //
RyoheiHagimoto 0:0e0631af0305 16 // Redistribution and use in source and binary forms, with or without modification,
RyoheiHagimoto 0:0e0631af0305 17 // are permitted provided that the following conditions are met:
RyoheiHagimoto 0:0e0631af0305 18 //
RyoheiHagimoto 0:0e0631af0305 19 // * Redistribution's of source code must retain the above copyright notice,
RyoheiHagimoto 0:0e0631af0305 20 // this list of conditions and the following disclaimer.
RyoheiHagimoto 0:0e0631af0305 21 //
RyoheiHagimoto 0:0e0631af0305 22 // * Redistribution's in binary form must reproduce the above copyright notice,
RyoheiHagimoto 0:0e0631af0305 23 // this list of conditions and the following disclaimer in the documentation
RyoheiHagimoto 0:0e0631af0305 24 // and/or other materials provided with the distribution.
RyoheiHagimoto 0:0e0631af0305 25 //
RyoheiHagimoto 0:0e0631af0305 26 // * The name of the copyright holders may not be used to endorse or promote products
RyoheiHagimoto 0:0e0631af0305 27 // derived from this software without specific prior written permission.
RyoheiHagimoto 0:0e0631af0305 28 //
RyoheiHagimoto 0:0e0631af0305 29 // This software is provided by the copyright holders and contributors "as is" and
RyoheiHagimoto 0:0e0631af0305 30 // any express or implied warranties, including, but not limited to, the implied
RyoheiHagimoto 0:0e0631af0305 31 // warranties of merchantability and fitness for a particular purpose are disclaimed.
RyoheiHagimoto 0:0e0631af0305 32 // In no event shall the Intel Corporation or contributors be liable for any direct,
RyoheiHagimoto 0:0e0631af0305 33 // indirect, incidental, special, exemplary, or consequential damages
RyoheiHagimoto 0:0e0631af0305 34 // (including, but not limited to, procurement of substitute goods or services;
RyoheiHagimoto 0:0e0631af0305 35 // loss of use, data, or profits; or business interruption) however caused
RyoheiHagimoto 0:0e0631af0305 36 // and on any theory of liability, whether in contract, strict liability,
RyoheiHagimoto 0:0e0631af0305 37 // or tort (including negligence or otherwise) arising in any way out of
RyoheiHagimoto 0:0e0631af0305 38 // the use of this software, even if advised of the possibility of such damage.
RyoheiHagimoto 0:0e0631af0305 39 //
RyoheiHagimoto 0:0e0631af0305 40 //M*/
RyoheiHagimoto 0:0e0631af0305 41
RyoheiHagimoto 0:0e0631af0305 42 #ifndef OPENCV_HAL_NEON_UTILS_HPP
RyoheiHagimoto 0:0e0631af0305 43 #define OPENCV_HAL_NEON_UTILS_HPP
RyoheiHagimoto 0:0e0631af0305 44
RyoheiHagimoto 0:0e0631af0305 45 #include "opencv2/core/cvdef.h"
RyoheiHagimoto 0:0e0631af0305 46
RyoheiHagimoto 0:0e0631af0305 47 //! @addtogroup core_utils_neon
RyoheiHagimoto 0:0e0631af0305 48 //! @{
RyoheiHagimoto 0:0e0631af0305 49
RyoheiHagimoto 0:0e0631af0305 50 #if CV_NEON
RyoheiHagimoto 0:0e0631af0305 51
RyoheiHagimoto 0:0e0631af0305 52 inline int32x2_t cv_vrnd_s32_f32(float32x2_t v)
RyoheiHagimoto 0:0e0631af0305 53 {
RyoheiHagimoto 0:0e0631af0305 54 static int32x2_t v_sign = vdup_n_s32(1 << 31),
RyoheiHagimoto 0:0e0631af0305 55 v_05 = vreinterpret_s32_f32(vdup_n_f32(0.5f));
RyoheiHagimoto 0:0e0631af0305 56
RyoheiHagimoto 0:0e0631af0305 57 int32x2_t v_addition = vorr_s32(v_05, vand_s32(v_sign, vreinterpret_s32_f32(v)));
RyoheiHagimoto 0:0e0631af0305 58 return vcvt_s32_f32(vadd_f32(v, vreinterpret_f32_s32(v_addition)));
RyoheiHagimoto 0:0e0631af0305 59 }
RyoheiHagimoto 0:0e0631af0305 60
RyoheiHagimoto 0:0e0631af0305 61 inline int32x4_t cv_vrndq_s32_f32(float32x4_t v)
RyoheiHagimoto 0:0e0631af0305 62 {
RyoheiHagimoto 0:0e0631af0305 63 static int32x4_t v_sign = vdupq_n_s32(1 << 31),
RyoheiHagimoto 0:0e0631af0305 64 v_05 = vreinterpretq_s32_f32(vdupq_n_f32(0.5f));
RyoheiHagimoto 0:0e0631af0305 65
RyoheiHagimoto 0:0e0631af0305 66 int32x4_t v_addition = vorrq_s32(v_05, vandq_s32(v_sign, vreinterpretq_s32_f32(v)));
RyoheiHagimoto 0:0e0631af0305 67 return vcvtq_s32_f32(vaddq_f32(v, vreinterpretq_f32_s32(v_addition)));
RyoheiHagimoto 0:0e0631af0305 68 }
RyoheiHagimoto 0:0e0631af0305 69
RyoheiHagimoto 0:0e0631af0305 70 inline uint32x2_t cv_vrnd_u32_f32(float32x2_t v)
RyoheiHagimoto 0:0e0631af0305 71 {
RyoheiHagimoto 0:0e0631af0305 72 static float32x2_t v_05 = vdup_n_f32(0.5f);
RyoheiHagimoto 0:0e0631af0305 73 return vcvt_u32_f32(vadd_f32(v, v_05));
RyoheiHagimoto 0:0e0631af0305 74 }
RyoheiHagimoto 0:0e0631af0305 75
RyoheiHagimoto 0:0e0631af0305 76 inline uint32x4_t cv_vrndq_u32_f32(float32x4_t v)
RyoheiHagimoto 0:0e0631af0305 77 {
RyoheiHagimoto 0:0e0631af0305 78 static float32x4_t v_05 = vdupq_n_f32(0.5f);
RyoheiHagimoto 0:0e0631af0305 79 return vcvtq_u32_f32(vaddq_f32(v, v_05));
RyoheiHagimoto 0:0e0631af0305 80 }
RyoheiHagimoto 0:0e0631af0305 81
RyoheiHagimoto 0:0e0631af0305 82 inline float32x4_t cv_vrecpq_f32(float32x4_t val)
RyoheiHagimoto 0:0e0631af0305 83 {
RyoheiHagimoto 0:0e0631af0305 84 float32x4_t reciprocal = vrecpeq_f32(val);
RyoheiHagimoto 0:0e0631af0305 85 reciprocal = vmulq_f32(vrecpsq_f32(val, reciprocal), reciprocal);
RyoheiHagimoto 0:0e0631af0305 86 reciprocal = vmulq_f32(vrecpsq_f32(val, reciprocal), reciprocal);
RyoheiHagimoto 0:0e0631af0305 87 return reciprocal;
RyoheiHagimoto 0:0e0631af0305 88 }
RyoheiHagimoto 0:0e0631af0305 89
RyoheiHagimoto 0:0e0631af0305 90 inline float32x2_t cv_vrecp_f32(float32x2_t val)
RyoheiHagimoto 0:0e0631af0305 91 {
RyoheiHagimoto 0:0e0631af0305 92 float32x2_t reciprocal = vrecpe_f32(val);
RyoheiHagimoto 0:0e0631af0305 93 reciprocal = vmul_f32(vrecps_f32(val, reciprocal), reciprocal);
RyoheiHagimoto 0:0e0631af0305 94 reciprocal = vmul_f32(vrecps_f32(val, reciprocal), reciprocal);
RyoheiHagimoto 0:0e0631af0305 95 return reciprocal;
RyoheiHagimoto 0:0e0631af0305 96 }
RyoheiHagimoto 0:0e0631af0305 97
RyoheiHagimoto 0:0e0631af0305 98 inline float32x4_t cv_vrsqrtq_f32(float32x4_t val)
RyoheiHagimoto 0:0e0631af0305 99 {
RyoheiHagimoto 0:0e0631af0305 100 float32x4_t e = vrsqrteq_f32(val);
RyoheiHagimoto 0:0e0631af0305 101 e = vmulq_f32(vrsqrtsq_f32(vmulq_f32(e, e), val), e);
RyoheiHagimoto 0:0e0631af0305 102 e = vmulq_f32(vrsqrtsq_f32(vmulq_f32(e, e), val), e);
RyoheiHagimoto 0:0e0631af0305 103 return e;
RyoheiHagimoto 0:0e0631af0305 104 }
RyoheiHagimoto 0:0e0631af0305 105
RyoheiHagimoto 0:0e0631af0305 106 inline float32x2_t cv_vrsqrt_f32(float32x2_t val)
RyoheiHagimoto 0:0e0631af0305 107 {
RyoheiHagimoto 0:0e0631af0305 108 float32x2_t e = vrsqrte_f32(val);
RyoheiHagimoto 0:0e0631af0305 109 e = vmul_f32(vrsqrts_f32(vmul_f32(e, e), val), e);
RyoheiHagimoto 0:0e0631af0305 110 e = vmul_f32(vrsqrts_f32(vmul_f32(e, e), val), e);
RyoheiHagimoto 0:0e0631af0305 111 return e;
RyoheiHagimoto 0:0e0631af0305 112 }
RyoheiHagimoto 0:0e0631af0305 113
RyoheiHagimoto 0:0e0631af0305 114 inline float32x4_t cv_vsqrtq_f32(float32x4_t val)
RyoheiHagimoto 0:0e0631af0305 115 {
RyoheiHagimoto 0:0e0631af0305 116 return cv_vrecpq_f32(cv_vrsqrtq_f32(val));
RyoheiHagimoto 0:0e0631af0305 117 }
RyoheiHagimoto 0:0e0631af0305 118
RyoheiHagimoto 0:0e0631af0305 119 inline float32x2_t cv_vsqrt_f32(float32x2_t val)
RyoheiHagimoto 0:0e0631af0305 120 {
RyoheiHagimoto 0:0e0631af0305 121 return cv_vrecp_f32(cv_vrsqrt_f32(val));
RyoheiHagimoto 0:0e0631af0305 122 }
RyoheiHagimoto 0:0e0631af0305 123
RyoheiHagimoto 0:0e0631af0305 124 #endif
RyoheiHagimoto 0:0e0631af0305 125
RyoheiHagimoto 0:0e0631af0305 126 //! @}
RyoheiHagimoto 0:0e0631af0305 127
RyoheiHagimoto 0:0e0631af0305 128 #endif // OPENCV_HAL_NEON_UTILS_HPP