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82 lines
3.4 KiB
Common Lisp
82 lines
3.4 KiB
Common Lisp
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/*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) 2010-2012, Multicoreware, Inc., all rights reserved.
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// Copyright (C) 2010-2012, Advanced Micro Devices, 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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// @Authors
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// Peng Xiao, pengxiao@multicorewareinc.com
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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 oclMaterials 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 uintel 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 uinterruption) 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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inline float2 cmulf(float2 a, float2 b)
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{
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return (float2)(a.x * b.x - a.y * b.y, a.x * b.y + a.y * b.x);
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}
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inline float2 conjf(float2 a)
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{
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return (float2)(a.x, - a.y);
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}
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__kernel void mulAndScaleSpectrums(__global const uchar * src1ptr, int src1_step, int src1_offset,
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__global const uchar * src2ptr, int src2_step, int src2_offset,
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__global uchar * dstptr, int dst_step, int dst_offset,
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int dst_rows, int dst_cols)
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{
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int x = get_global_id(0);
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int y = get_global_id(1);
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if (x < dst_cols && y < dst_rows)
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{
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int src1_index = mad24(y, src1_step, x * (int)sizeof(float2) + src1_offset);
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int src2_index = mad24(y, src2_step, x * (int)sizeof(float2) + src2_offset);
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int dst_index = mad24(y, dst_step, x * (int)sizeof(float2) + dst_offset);
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float2 src0 = *(__global const float2 *)(src1ptr + src1_index);
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float2 src1 = *(__global const float2 *)(src2ptr + src2_index);
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__global float2 * dst = (__global float2 *)(dstptr + dst_index);
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#ifdef CONJ
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float2 v = cmulf(src0, conjf(src1));
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#else
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float2 v = cmulf(src0, src1);
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#endif
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dst[0] = v;
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}
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}
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