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// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2010-2012, Institute Of Software Chinese Academy Of Science, all rights reserved.
// Copyright (C) 2010-2012, Advanced Micro Devices, Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// @Authors
// Niko Li, newlife20080214@gmail.com
// Zero Lin zero.lin@amd.com
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistribution's of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistribution's in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * The name of the copyright holders may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors as is and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//
#if defined (DOUBLE_SUPPORT)
#ifdef cl_amd_fp64
#pragma OPENCL EXTENSION cl_amd_fp64:enable
#elif defined (cl_khr_fp64)
#pragma OPENCL EXTENSION cl_khr_fp64:enable
#endif
#endif
#ifdef BORDER_CONSTANT
#define EXTRAPOLATE(x, y, v) v = scalar;
#elif defined BORDER_REPLICATE
#define EXTRAPOLATE(x, y, v) \
{ \
x = max(min(x, src_cols - 1), 0); \
y = max(min(y, src_rows - 1), 0); \
v = src[mad24(y, src_step, x + src_offset)]; \
}
#elif defined BORDER_WRAP
#define EXTRAPOLATE(x, y, v) \
{ \
if (x < 0) \
x -= ((x - src_cols + 1) / src_cols) * src_cols; \
if (x >= src_cols) \
x %= src_cols; \
\
if (y < 0) \
y -= ((y - src_rows + 1) / src_rows) * src_rows; \
if( y >= src_rows ) \
y %= src_rows; \
v = src[mad24(y, src_step, x + src_offset)]; \
}
#elif defined(BORDER_REFLECT) || defined(BORDER_REFLECT_101)
#ifdef BORDER_REFLECT
#define DELTA int delta = 0
#else
#define DELTA int delta = 1
#endif
#define EXTRAPOLATE(x, y, v) \
{ \
DELTA; \
if (src_cols == 1) \
x = 0; \
else \
do \
{ \
if( x < 0 ) \
x = -x - 1 + delta; \
else \
x = src_cols - 1 - (x - src_cols) - delta; \
} \
while (x >= src_cols || x < 0); \
\
if (src_rows == 1) \
y = 0; \
else \
do \
{ \
if( y < 0 ) \
y = -y - 1 + delta; \
else \
y = src_rows - 1 - (y - src_rows) - delta; \
} \
while (y >= src_rows || y < 0); \
v = src[mad24(y, src_step, x + src_offset)]; \
}
#else
#error No extrapolation method
#endif
#define NEED_EXTRAPOLATION(gx, gy) (gx >= src_cols || gy >= src_rows || gx < 0 || gy < 0)
__kernel void copymakeborder
(__global const GENTYPE *src,
__global GENTYPE *dst,
int dst_cols, int dst_rows,
int src_cols, int src_rows,
int src_step, int src_offset,
int dst_step, int dst_offset,
int top, int left, GENTYPE scalar)
{
int x = get_global_id(0);
int y = get_global_id(1);
if (x < dst_cols && y < dst_rows)
{
int src_x = x - left;
int src_y = y - top;
int dst_index = mad24(y, dst_step, x + dst_offset);
if (NEED_EXTRAPOLATION(src_x, src_y))
EXTRAPOLATE(src_x, src_y, dst[dst_index])
else
{
int src_index = mad24(src_y, src_step, src_x + src_offset);
dst[dst_index] = src[src_index];
}
}
}