opencv on mbed

Dependencies:   mbed

Committer:
joeverbout
Date:
Thu Mar 31 21:16:38 2016 +0000
Revision:
0:ea44dc9ed014
OpenCV on mbed attempt

Who changed what in which revision?

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joeverbout 0:ea44dc9ed014 1 /*M///////////////////////////////////////////////////////////////////////////////////////
joeverbout 0:ea44dc9ed014 2 //
joeverbout 0:ea44dc9ed014 3 // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
joeverbout 0:ea44dc9ed014 4 //
joeverbout 0:ea44dc9ed014 5 // By downloading, copying, installing or using the software you agree to this license.
joeverbout 0:ea44dc9ed014 6 // If you do not agree to this license, do not download, install,
joeverbout 0:ea44dc9ed014 7 // copy or use the software.
joeverbout 0:ea44dc9ed014 8 //
joeverbout 0:ea44dc9ed014 9 //
joeverbout 0:ea44dc9ed014 10 // License Agreement
joeverbout 0:ea44dc9ed014 11 // For Open Source Computer Vision Library
joeverbout 0:ea44dc9ed014 12 //
joeverbout 0:ea44dc9ed014 13 // Copyright (C) 2015, Itseez Inc., all rights reserved.
joeverbout 0:ea44dc9ed014 14 // Third party copyrights are property of their respective owners.
joeverbout 0:ea44dc9ed014 15 //
joeverbout 0:ea44dc9ed014 16 // Redistribution and use in source and binary forms, with or without modification,
joeverbout 0:ea44dc9ed014 17 // are permitted provided that the following conditions are met:
joeverbout 0:ea44dc9ed014 18 //
joeverbout 0:ea44dc9ed014 19 // * Redistribution's of source code must retain the above copyright notice,
joeverbout 0:ea44dc9ed014 20 // this list of conditions and the following disclaimer.
joeverbout 0:ea44dc9ed014 21 //
joeverbout 0:ea44dc9ed014 22 // * Redistribution's in binary form must reproduce the above copyright notice,
joeverbout 0:ea44dc9ed014 23 // this list of conditions and the following disclaimer in the documentation
joeverbout 0:ea44dc9ed014 24 // and/or other materials provided with the distribution.
joeverbout 0:ea44dc9ed014 25 //
joeverbout 0:ea44dc9ed014 26 // * The name of the copyright holders may not be used to endorse or promote products
joeverbout 0:ea44dc9ed014 27 // derived from this software without specific prior written permission.
joeverbout 0:ea44dc9ed014 28 //
joeverbout 0:ea44dc9ed014 29 // This software is provided by the copyright holders and contributors "as is" and
joeverbout 0:ea44dc9ed014 30 // any express or implied warranties, including, but not limited to, the implied
joeverbout 0:ea44dc9ed014 31 // warranties of merchantability and fitness for a particular purpose are disclaimed.
joeverbout 0:ea44dc9ed014 32 // In no event shall the Intel Corporation or contributors be liable for any direct,
joeverbout 0:ea44dc9ed014 33 // indirect, incidental, special, exemplary, or consequential damages
joeverbout 0:ea44dc9ed014 34 // (including, but not limited to, procurement of substitute goods or services;
joeverbout 0:ea44dc9ed014 35 // loss of use, data, or profits; or business interruption) however caused
joeverbout 0:ea44dc9ed014 36 // and on any theory of liability, whether in contract, strict liability,
joeverbout 0:ea44dc9ed014 37 // or tort (including negligence or otherwise) arising in any way out of
joeverbout 0:ea44dc9ed014 38 // the use of this software, even if advised of the possibility of such damage.
joeverbout 0:ea44dc9ed014 39 //
joeverbout 0:ea44dc9ed014 40 //M*/
joeverbout 0:ea44dc9ed014 41
joeverbout 0:ea44dc9ed014 42 #ifndef __OPENCV_HAL_NEON_UTILS_HPP__
joeverbout 0:ea44dc9ed014 43 #define __OPENCV_HAL_NEON_UTILS_HPP__
joeverbout 0:ea44dc9ed014 44
joeverbout 0:ea44dc9ed014 45 #include "opencv2/core/cvdef.h"
joeverbout 0:ea44dc9ed014 46
joeverbout 0:ea44dc9ed014 47 //! @addtogroup core_utils_neon
joeverbout 0:ea44dc9ed014 48 //! @{
joeverbout 0:ea44dc9ed014 49
joeverbout 0:ea44dc9ed014 50 #if CV_NEON
joeverbout 0:ea44dc9ed014 51
joeverbout 0:ea44dc9ed014 52 inline int32x2_t cv_vrnd_s32_f32(float32x2_t v)
joeverbout 0:ea44dc9ed014 53 {
joeverbout 0:ea44dc9ed014 54 static int32x2_t v_sign = vdup_n_s32(1 << 31),
joeverbout 0:ea44dc9ed014 55 v_05 = vreinterpret_s32_f32(vdup_n_f32(0.5f));
joeverbout 0:ea44dc9ed014 56
joeverbout 0:ea44dc9ed014 57 int32x2_t v_addition = vorr_s32(v_05, vand_s32(v_sign, vreinterpret_s32_f32(v)));
joeverbout 0:ea44dc9ed014 58 return vcvt_s32_f32(vadd_f32(v, vreinterpret_f32_s32(v_addition)));
joeverbout 0:ea44dc9ed014 59 }
joeverbout 0:ea44dc9ed014 60
joeverbout 0:ea44dc9ed014 61 inline int32x4_t cv_vrndq_s32_f32(float32x4_t v)
joeverbout 0:ea44dc9ed014 62 {
joeverbout 0:ea44dc9ed014 63 static int32x4_t v_sign = vdupq_n_s32(1 << 31),
joeverbout 0:ea44dc9ed014 64 v_05 = vreinterpretq_s32_f32(vdupq_n_f32(0.5f));
joeverbout 0:ea44dc9ed014 65
joeverbout 0:ea44dc9ed014 66 int32x4_t v_addition = vorrq_s32(v_05, vandq_s32(v_sign, vreinterpretq_s32_f32(v)));
joeverbout 0:ea44dc9ed014 67 return vcvtq_s32_f32(vaddq_f32(v, vreinterpretq_f32_s32(v_addition)));
joeverbout 0:ea44dc9ed014 68 }
joeverbout 0:ea44dc9ed014 69
joeverbout 0:ea44dc9ed014 70 inline uint32x2_t cv_vrnd_u32_f32(float32x2_t v)
joeverbout 0:ea44dc9ed014 71 {
joeverbout 0:ea44dc9ed014 72 static float32x2_t v_05 = vdup_n_f32(0.5f);
joeverbout 0:ea44dc9ed014 73 return vcvt_u32_f32(vadd_f32(v, v_05));
joeverbout 0:ea44dc9ed014 74 }
joeverbout 0:ea44dc9ed014 75
joeverbout 0:ea44dc9ed014 76 inline uint32x4_t cv_vrndq_u32_f32(float32x4_t v)
joeverbout 0:ea44dc9ed014 77 {
joeverbout 0:ea44dc9ed014 78 static float32x4_t v_05 = vdupq_n_f32(0.5f);
joeverbout 0:ea44dc9ed014 79 return vcvtq_u32_f32(vaddq_f32(v, v_05));
joeverbout 0:ea44dc9ed014 80 }
joeverbout 0:ea44dc9ed014 81
joeverbout 0:ea44dc9ed014 82 inline float32x4_t cv_vrecpq_f32(float32x4_t val)
joeverbout 0:ea44dc9ed014 83 {
joeverbout 0:ea44dc9ed014 84 float32x4_t reciprocal = vrecpeq_f32(val);
joeverbout 0:ea44dc9ed014 85 reciprocal = vmulq_f32(vrecpsq_f32(val, reciprocal), reciprocal);
joeverbout 0:ea44dc9ed014 86 reciprocal = vmulq_f32(vrecpsq_f32(val, reciprocal), reciprocal);
joeverbout 0:ea44dc9ed014 87 return reciprocal;
joeverbout 0:ea44dc9ed014 88 }
joeverbout 0:ea44dc9ed014 89
joeverbout 0:ea44dc9ed014 90 inline float32x2_t cv_vrecp_f32(float32x2_t val)
joeverbout 0:ea44dc9ed014 91 {
joeverbout 0:ea44dc9ed014 92 float32x2_t reciprocal = vrecpe_f32(val);
joeverbout 0:ea44dc9ed014 93 reciprocal = vmul_f32(vrecps_f32(val, reciprocal), reciprocal);
joeverbout 0:ea44dc9ed014 94 reciprocal = vmul_f32(vrecps_f32(val, reciprocal), reciprocal);
joeverbout 0:ea44dc9ed014 95 return reciprocal;
joeverbout 0:ea44dc9ed014 96 }
joeverbout 0:ea44dc9ed014 97
joeverbout 0:ea44dc9ed014 98 inline float32x4_t cv_vrsqrtq_f32(float32x4_t val)
joeverbout 0:ea44dc9ed014 99 {
joeverbout 0:ea44dc9ed014 100 float32x4_t e = vrsqrteq_f32(val);
joeverbout 0:ea44dc9ed014 101 e = vmulq_f32(vrsqrtsq_f32(vmulq_f32(e, e), val), e);
joeverbout 0:ea44dc9ed014 102 e = vmulq_f32(vrsqrtsq_f32(vmulq_f32(e, e), val), e);
joeverbout 0:ea44dc9ed014 103 return e;
joeverbout 0:ea44dc9ed014 104 }
joeverbout 0:ea44dc9ed014 105
joeverbout 0:ea44dc9ed014 106 inline float32x2_t cv_vrsqrt_f32(float32x2_t val)
joeverbout 0:ea44dc9ed014 107 {
joeverbout 0:ea44dc9ed014 108 float32x2_t e = vrsqrte_f32(val);
joeverbout 0:ea44dc9ed014 109 e = vmul_f32(vrsqrts_f32(vmul_f32(e, e), val), e);
joeverbout 0:ea44dc9ed014 110 e = vmul_f32(vrsqrts_f32(vmul_f32(e, e), val), e);
joeverbout 0:ea44dc9ed014 111 return e;
joeverbout 0:ea44dc9ed014 112 }
joeverbout 0:ea44dc9ed014 113
joeverbout 0:ea44dc9ed014 114 inline float32x4_t cv_vsqrtq_f32(float32x4_t val)
joeverbout 0:ea44dc9ed014 115 {
joeverbout 0:ea44dc9ed014 116 return cv_vrecpq_f32(cv_vrsqrtq_f32(val));
joeverbout 0:ea44dc9ed014 117 }
joeverbout 0:ea44dc9ed014 118
joeverbout 0:ea44dc9ed014 119 inline float32x2_t cv_vsqrt_f32(float32x2_t val)
joeverbout 0:ea44dc9ed014 120 {
joeverbout 0:ea44dc9ed014 121 return cv_vrecp_f32(cv_vrsqrt_f32(val));
joeverbout 0:ea44dc9ed014 122 }
joeverbout 0:ea44dc9ed014 123
joeverbout 0:ea44dc9ed014 124 #endif
joeverbout 0:ea44dc9ed014 125
joeverbout 0:ea44dc9ed014 126 //! @}
joeverbout 0:ea44dc9ed014 127
joeverbout 0:ea44dc9ed014 128 #endif // __OPENCV_HAL_NEON_UTILS_HPP__
joeverbout 0:ea44dc9ed014 129