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/*M///////////////////////////////////////////////////////////////////////////////////////
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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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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// For Open Source Computer Vision Library
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// Copyright (C) 2010-2012, Institute Of Software Chinese Academy Of Science, all rights reserved.
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// Copyright (C) 2010-2012, Advanced Micro Devices, Inc., all rights reserved.
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// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
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// Third party copyrights are property of their respective owners.
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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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// * 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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// * 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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// * 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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// 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 copyright holders 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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#define DECLARE_INPUT_MAT(i) \
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__global const uchar * src##i##ptr, int src##i##_step, int src##i##_offset,
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#define DECLARE_OUTPUT_MAT(i) \
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__global uchar * dst##i##ptr, int dst##i##_step, int dst##i##_offset,
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#define DECLARE_INDEX(i) \
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int src##i##_index = mad24(src##i##_step, y0, mad24(x, (int)sizeof(T) * scn##i, src##i##_offset)); \
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int dst##i##_index = mad24(dst##i##_step, y0, mad24(x, (int)sizeof(T) * dcn##i, dst##i##_offset));
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#define PROCESS_ELEM(i) \
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__global const T * src##i = (__global const T *)(src##i##ptr + src##i##_index); \
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__global T * dst##i = (__global T *)(dst##i##ptr + dst##i##_index); \
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dst##i[0] = src##i[0]; \
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src##i##_index += src##i##_step; \
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dst##i##_index += dst##i##_step;
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__kernel void mixChannels(DECLARE_INPUT_MAT_N DECLARE_OUTPUT_MAT_N int rows, int cols, int rowsPerWI)
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int x = get_global_id(0);
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int y0 = get_global_id(1) * rowsPerWI;
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for (int y = y0, y1 = min(y0 + rowsPerWI, rows); y < y1; ++y)