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79 lines
3.3 KiB
C++
79 lines
3.3 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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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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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009-2011, Willow Garage Inc., all rights reserved.
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// Copyright (C) 2014-2015, Itseez Inc., 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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// * Redistribution's 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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// * Redistribution's 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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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software 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 the Intel Corporation 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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//M*/
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#include "precomp.hpp"
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#include "convert.hpp"
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namespace cv
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{
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namespace opt_AVX2
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{
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void cvtScale_s16s32f32Line_AVX2(const short* src, int* dst, float scale, float shift, int width)
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{
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int x = 0;
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__m256 scale256 = _mm256_set1_ps(scale);
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__m256 shift256 = _mm256_set1_ps(shift);
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const int shuffle = 0xD8;
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for (; x <= width - 16; x += 16)
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{
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__m256i v_src = _mm256_loadu_si256((const __m256i *)(src + x));
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v_src = _mm256_permute4x64_epi64(v_src, shuffle);
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__m256i v_src_lo = _mm256_srai_epi32(_mm256_unpacklo_epi16(v_src, v_src), 16);
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__m256i v_src_hi = _mm256_srai_epi32(_mm256_unpackhi_epi16(v_src, v_src), 16);
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__m256 v_dst0 = _mm256_add_ps(_mm256_mul_ps(_mm256_cvtepi32_ps(v_src_lo), scale256), shift256);
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__m256 v_dst1 = _mm256_add_ps(_mm256_mul_ps(_mm256_cvtepi32_ps(v_src_hi), scale256), shift256);
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_mm256_storeu_si256((__m256i *)(dst + x), _mm256_cvtps_epi32(v_dst0));
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_mm256_storeu_si256((__m256i *)(dst + x + 8), _mm256_cvtps_epi32(v_dst1));
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}
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for (; x < width; x++)
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dst[x] = saturate_cast<int>(src[x] * scale + shift);
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}
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}
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}
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/* End of file. */
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