--- /dev/null
+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+// By downloading, copying, installing or using the software you agree to this license.
+// If you do not agree to this license, do not download, install,
+// copy or use the software.
+//
+//
+// License Agreement
+// For Open Source Computer Vision Library
+//
+// Copyright (C) 2010-2012, Multicoreware, Inc., all rights reserved.
+// Copyright (C) 2010-2012, Advanced Micro Devices, Inc., all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// @Authors
+// Dachuan Zhao, dachuan@multicorewareinc.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.
+//
+//M*/
+
+#if cn == 4
+#define FT float4
+#else
+#define FT float
+#endif
+
+#define noconvert
+
+inline int idx_row_low(int y, int last_row)
+{
+ return abs(y) % (last_row + 1);
+}
+
+inline int idx_row_high(int y, int last_row)
+{
+ return abs(last_row - (int)abs(last_row - y)) % (last_row + 1);
+}
+
+inline int idx_row(int y, int last_row)
+{
+ return idx_row_low(idx_row_high(y, last_row), last_row);
+}
+
+inline int idx_col_low(int x, int last_col)
+{
+ return abs(x) % (last_col + 1);
+}
+
+inline int idx_col_high(int x, int last_col)
+{
+ return abs(last_col - (int)abs(last_col - x)) % (last_col + 1);
+}
+
+inline int idx_col(int x, int last_col)
+{
+ return idx_col_low(idx_col_high(x, last_col), last_col);
+}
+
+__kernel void pyrDown(__global const uchar * srcData, int src_step, int src_offset, int src_rows, int src_cols,
+ __global uchar * dst, int dst_step, int dst_offset, int dst_rows, int dst_cols)
+{
+ const int x = get_global_id(0);
+ const int y = get_group_id(1);
+
+ __local FT smem[256 + 4];
+
+ FT sum;
+
+ FT co1 = 0.375f;
+ FT co2 = 0.25f;
+ FT co3 = 0.0625f;
+
+ const int src_y = 2*y;
+ const int last_row = srcRows - 1;
+ const int last_col = srcCols - 1;
+
+ if (src_y >= 2 && src_y < srcRows - 2 && x >= 2 && x < srcCols - 2)
+ {
+ sum = co3 * convertToFT(((__global T*)(srcData + (src_y - 2) * srcStep / cn))[x]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + (src_y - 1) * srcStep / cn))[x]);
+ sum = sum + co1 * convertToFT(((__global T*)(srcData + (src_y ) * srcStep / cn))[x]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + (src_y + 1) * srcStep / cn))[x]);
+ sum = sum + co3 * convertToFT(((__global T*)(srcData + (src_y + 2) * srcStep / cn))[x]);
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ sum = co3 * convertToFT(((__global T*)(srcData + (src_y - 2) * srcStep / cn))[left_x]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + (src_y - 1) * srcStep / cn))[left_x]);
+ sum = sum + co1 * convertToFT(((__global T*)(srcData + (src_y ) * srcStep / cn))[left_x]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + (src_y + 1) * srcStep / cn))[left_x]);
+ sum = sum + co3 * convertToFT(((__global T*)(srcData + (src_y + 2) * srcStep / cn))[left_x]);
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ sum = co3 * convertToFT(((__global T*)(srcData + (src_y - 2) * srcStep / cn))[right_x]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + (src_y - 1) * srcStep / cn))[right_x]);
+ sum = sum + co1 * convertToFT(((__global T*)(srcData + (src_y ) * srcStep / cn))[right_x]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + (src_y + 1) * srcStep / cn))[right_x]);
+ sum = sum + co3 * convertToFT(((__global T*)(srcData + (src_y + 2) * srcStep / cn))[right_x]);
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+ else
+ {
+ int col = idx_col(x, last_col);
+
+ sum = co3 * convertToFT(((__global T*)(srcData + idx_row(src_y - 2, last_row) * srcStep / cn))[col]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + idx_row(src_y - 1, last_row) * srcStep / cn))[col]);
+ sum = sum + co1 * convertToFT(((__global T*)(srcData + idx_row(src_y , last_row) * srcStep / cn))[col]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + idx_row(src_y + 1, last_row) * srcStep / cn))[col]);
+ sum = sum + co3 * convertToFT(((__global T*)(srcData + idx_row(src_y + 2, last_row) * srcStep / cn))[col]);
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ col = idx_col(left_x, last_col);
+
+ sum = co3 * convertToFT(((__global T*)(srcData + idx_row(src_y - 2, last_row) * srcStep / cn))[col]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + idx_row(src_y - 1, last_row) * srcStep / cn))[col]);
+ sum = sum + co1 * convertToFT(((__global T*)(srcData + idx_row(src_y , last_row) * srcStep / cn))[col]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + idx_row(src_y + 1, last_row) * srcStep / cn))[col]);
+ sum = sum + co3 * convertToFT(((__global T*)(srcData + idx_row(src_y + 2, last_row) * srcStep / cn))[col]);
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ col = idx_col(right_x, last_col);
+
+ sum = co3 * convertToFT(((__global T*)(srcData + idx_row(src_y - 2, last_row) * srcStep / cn))[col]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + idx_row(src_y - 1, last_row) * srcStep / cn))[col]);
+ sum = sum + co1 * convertToFT(((__global T*)(srcData + idx_row(src_y , last_row) * srcStep / cn))[col]);
+ sum = sum + co2 * convertToFT(((__global T*)(srcData + idx_row(src_y + 1, last_row) * srcStep / cn))[col]);
+ sum = sum + co3 * convertToFT(((__global T*)(srcData + idx_row(src_y + 2, last_row) * srcStep / cn))[col]);
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ if (get_local_id(0) < 128)
+ {
+ const int tid2 = get_local_id(0) * 2;
+
+ sum = co3 * smem[2 + tid2 - 2];
+ sum = sum + co2 * smem[2 + tid2 - 1];
+ sum = sum + co1 * smem[2 + tid2 ];
+ sum = sum + co2 * smem[2 + tid2 + 1];
+ sum = sum + co3 * smem[2 + tid2 + 2];
+
+ const int dst_x = (get_group_id(0) * get_local_size(0) + tid2) / 2;
+
+ if (dst_x < dstCols)
+ dst[y * dstStep + dst_x] = convertToT(sum);
+ }
+
+}
+
+///////////////////////////////////////////////////////////////////////
+////////////////////////// CV_8UC1 ///////////////////////////////////
+///////////////////////////////////////////////////////////////////////
+
+__kernel void pyrDown_C1_D0(__global uchar * srcData, int srcStep, int srcRows, int srcCols, __global uchar *dst, int dstStep, int dstCols)
+{
+ const int x = get_global_id(0);
+ const int y = get_group_id(1);
+
+ __local float smem[256 + 4];
+
+ float sum;
+
+ const int src_y = 2*y;
+ const int last_row = srcRows - 1;
+ const int last_col = srcCols - 1;
+
+ if (src_y >= 2 && src_y < srcRows - 2 && x >= 2 && x < srcCols - 2)
+ {
+ sum = 0.0625f * (((srcData + (src_y - 2) * srcStep))[x]);
+ sum = sum + 0.25f * (((srcData + (src_y - 1) * srcStep))[x]);
+ sum = sum + 0.375f * (((srcData + (src_y ) * srcStep))[x]);
+ sum = sum + 0.25f * (((srcData + (src_y + 1) * srcStep))[x]);
+ sum = sum + 0.0625f * (((srcData + (src_y + 2) * srcStep))[x]);
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ sum = 0.0625f * (((srcData + (src_y - 2) * srcStep))[left_x]);
+ sum = sum + 0.25f * (((srcData + (src_y - 1) * srcStep))[left_x]);
+ sum = sum + 0.375f * (((srcData + (src_y ) * srcStep))[left_x]);
+ sum = sum + 0.25f * (((srcData + (src_y + 1) * srcStep))[left_x]);
+ sum = sum + 0.0625f * (((srcData + (src_y + 2) * srcStep))[left_x]);
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ sum = 0.0625f * (((srcData + (src_y - 2) * srcStep))[right_x]);
+ sum = sum + 0.25f * (((srcData + (src_y - 1) * srcStep))[right_x]);
+ sum = sum + 0.375f * (((srcData + (src_y ) * srcStep))[right_x]);
+ sum = sum + 0.25f * (((srcData + (src_y + 1) * srcStep))[right_x]);
+ sum = sum + 0.0625f * (((srcData + (src_y + 2) * srcStep))[right_x]);
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+ else
+ {
+ int col = idx_col(x, last_col);
+
+ sum = 0.0625f * (((srcData + idx_row(src_y - 2, last_row) * srcStep))[col]);
+ sum = sum + 0.25f * (((srcData + idx_row(src_y - 1, last_row) * srcStep))[col]);
+ sum = sum + 0.375f * (((srcData + idx_row(src_y , last_row) * srcStep))[col]);
+ sum = sum + 0.25f * (((srcData + idx_row(src_y + 1, last_row) * srcStep))[col]);
+ sum = sum + 0.0625f * (((srcData + idx_row(src_y + 2, last_row) * srcStep))[col]);
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ col = idx_col(left_x, last_col);
+
+ sum = 0.0625f * (((srcData + idx_row(src_y - 2, last_row) * srcStep))[col]);
+ sum = sum + 0.25f * (((srcData + idx_row(src_y - 1, last_row) * srcStep))[col]);
+ sum = sum + 0.375f * (((srcData + idx_row(src_y , last_row) * srcStep))[col]);
+ sum = sum + 0.25f * (((srcData + idx_row(src_y + 1, last_row) * srcStep))[col]);
+ sum = sum + 0.0625f * (((srcData + idx_row(src_y + 2, last_row) * srcStep))[col]);
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ col = idx_col(right_x, last_col);
+
+ sum = 0.0625f * (((srcData + idx_row(src_y - 2, last_row) * srcStep))[col]);
+ sum = sum + 0.25f * (((srcData + idx_row(src_y - 1, last_row) * srcStep))[col]);
+ sum = sum + 0.375f * (((srcData + idx_row(src_y , last_row) * srcStep))[col]);
+ sum = sum + 0.25f * (((srcData + idx_row(src_y + 1, last_row) * srcStep))[col]);
+ sum = sum + 0.0625f * (((srcData + idx_row(src_y + 2, last_row) * srcStep))[col]);
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ if (get_local_id(0) < 128)
+ {
+ const int tid2 = get_local_id(0) * 2;
+
+ sum = 0.0625f * smem[2 + tid2 - 2];
+ sum = sum + 0.25f * smem[2 + tid2 - 1];
+ sum = sum + 0.375f * smem[2 + tid2 ];
+ sum = sum + 0.25f * smem[2 + tid2 + 1];
+ sum = sum + 0.0625f * smem[2 + tid2 + 2];
+
+ const int dst_x = (get_group_id(0) * get_local_size(0) + tid2) / 2;
+
+ if (dst_x < dstCols)
+ dst[y * dstStep + dst_x] = convert_uchar_sat_rte(sum);
+ }
+}
+
+///////////////////////////////////////////////////////////////////////
+////////////////////////// CV_8UC4 ///////////////////////////////////
+///////////////////////////////////////////////////////////////////////
+
+__kernel void pyrDown_C4_D0(__global uchar4 * srcData, int srcStep, int srcRows, int srcCols, __global uchar4 *dst, int dstStep, int dstCols)
+{
+ const int x = get_global_id(0);
+ const int y = get_group_id(1);
+
+ __local float4 smem[256 + 4];
+
+ float4 sum;
+
+ const int src_y = 2*y;
+ const int last_row = srcRows - 1;
+ const int last_col = srcCols - 1;
+
+ float4 co1 = 0.375f;
+ float4 co2 = 0.25f;
+ float4 co3 = 0.0625f;
+
+ if (src_y >= 2 && src_y < srcRows - 2 && x >= 2 && x < srcCols - 2)
+ {
+ sum = co3 * convert_float4((((srcData + (src_y - 2) * srcStep / 4))[x]));
+ sum = sum + co2 * convert_float4((((srcData + (src_y - 1) * srcStep / 4))[x]));
+ sum = sum + co1 * convert_float4((((srcData + (src_y ) * srcStep / 4))[x]));
+ sum = sum + co2 * convert_float4((((srcData + (src_y + 1) * srcStep / 4))[x]));
+ sum = sum + co3 * convert_float4((((srcData + (src_y + 2) * srcStep / 4))[x]));
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ sum = co3 * convert_float4((((srcData + (src_y - 2) * srcStep / 4))[left_x]));
+ sum = sum + co2 * convert_float4((((srcData + (src_y - 1) * srcStep / 4))[left_x]));
+ sum = sum + co1 * convert_float4((((srcData + (src_y ) * srcStep / 4))[left_x]));
+ sum = sum + co2 * convert_float4((((srcData + (src_y + 1) * srcStep / 4))[left_x]));
+ sum = sum + co3 * convert_float4((((srcData + (src_y + 2) * srcStep / 4))[left_x]));
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ sum = co3 * convert_float4((((srcData + (src_y - 2) * srcStep / 4))[right_x]));
+ sum = sum + co2 * convert_float4((((srcData + (src_y - 1) * srcStep / 4))[right_x]));
+ sum = sum + co1 * convert_float4((((srcData + (src_y ) * srcStep / 4))[right_x]));
+ sum = sum + co2 * convert_float4((((srcData + (src_y + 1) * srcStep / 4))[right_x]));
+ sum = sum + co3 * convert_float4((((srcData + (src_y + 2) * srcStep / 4))[right_x]));
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+ else
+ {
+ int col = idx_col(x, last_col);
+
+ sum = co3 * convert_float4((((srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col]));
+ sum = sum + co2 * convert_float4((((srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col]));
+ sum = sum + co1 * convert_float4((((srcData + idx_row(src_y , last_row) * srcStep / 4))[col]));
+ sum = sum + co2 * convert_float4((((srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col]));
+ sum = sum + co3 * convert_float4((((srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col]));
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ col = idx_col(left_x, last_col);
+
+ sum = co3 * convert_float4((((srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col]));
+ sum = sum + co2 * convert_float4((((srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col]));
+ sum = sum + co1 * convert_float4((((srcData + idx_row(src_y , last_row) * srcStep / 4))[col]));
+ sum = sum + co2 * convert_float4((((srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col]));
+ sum = sum + co3 * convert_float4((((srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col]));
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ col = idx_col(right_x, last_col);
+
+ sum = co3 * convert_float4((((srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col]));
+ sum = sum + co2 * convert_float4((((srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col]));
+ sum = sum + co1 * convert_float4((((srcData + idx_row(src_y , last_row) * srcStep / 4))[col]));
+ sum = sum + co2 * convert_float4((((srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col]));
+ sum = sum + co3 * convert_float4((((srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col]));
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ if (get_local_id(0) < 128)
+ {
+ const int tid2 = get_local_id(0) * 2;
+
+ sum = co3 * smem[2 + tid2 - 2];
+ sum = sum + co2 * smem[2 + tid2 - 1];
+ sum = sum + co1 * smem[2 + tid2 ];
+ sum = sum + co2 * smem[2 + tid2 + 1];
+ sum = sum + co3 * smem[2 + tid2 + 2];
+
+ const int dst_x = (get_group_id(0) * get_local_size(0) + tid2) / 2;
+
+ if (dst_x < dstCols)
+ dst[y * dstStep / 4 + dst_x] = convert_uchar4_sat_rte(sum);
+ }
+}
+
+///////////////////////////////////////////////////////////////////////
+////////////////////////// CV_16UC1 //////////////////////////////////
+///////////////////////////////////////////////////////////////////////
+
+__kernel void pyrDown_C1_D2(__global ushort * srcData, int srcStep, int srcRows, int srcCols, __global ushort *dst, int dstStep, int dstCols)
+{
+ const int x = get_global_id(0);
+ const int y = get_group_id(1);
+
+ __local float smem[256 + 4];
+
+ float sum;
+
+ const int src_y = 2*y;
+ const int last_row = srcRows - 1;
+ const int last_col = srcCols - 1;
+
+ if (src_y >= 2 && src_y < srcRows - 2 && x >= 2 && x < srcCols - 2)
+ {
+ sum = 0.0625f * ((__global ushort*)((__global char*)srcData + (src_y - 2) * srcStep))[x];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + (src_y - 1) * srcStep))[x];
+ sum = sum + 0.375f * ((__global ushort*)((__global char*)srcData + (src_y ) * srcStep))[x];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + (src_y + 1) * srcStep))[x];
+ sum = sum + 0.0625f * ((__global ushort*)((__global char*)srcData + (src_y + 2) * srcStep))[x];
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ sum = 0.0625f * ((__global ushort*)((__global char*)srcData + (src_y - 2) * srcStep))[left_x];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + (src_y - 1) * srcStep))[left_x];
+ sum = sum + 0.375f * ((__global ushort*)((__global char*)srcData + (src_y ) * srcStep))[left_x];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + (src_y + 1) * srcStep))[left_x];
+ sum = sum + 0.0625f * ((__global ushort*)((__global char*)srcData + (src_y + 2) * srcStep))[left_x];
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ sum = 0.0625f * ((__global ushort*)((__global char*)srcData + (src_y - 2) * srcStep))[right_x];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + (src_y - 1) * srcStep))[right_x];
+ sum = sum + 0.375f * ((__global ushort*)((__global char*)srcData + (src_y ) * srcStep))[right_x];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + (src_y + 1) * srcStep))[right_x];
+ sum = sum + 0.0625f * ((__global ushort*)((__global char*)srcData + (src_y + 2) * srcStep))[right_x];
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+ else
+ {
+ int col = idx_col(x, last_col);
+
+ sum = 0.0625f * ((__global ushort*)((__global char*)srcData + idx_row(src_y - 2, last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + idx_row(src_y - 1, last_row) * srcStep))[col];
+ sum = sum + 0.375f * ((__global ushort*)((__global char*)srcData + idx_row(src_y , last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + idx_row(src_y + 1, last_row) * srcStep))[col];
+ sum = sum + 0.0625f * ((__global ushort*)((__global char*)srcData + idx_row(src_y + 2, last_row) * srcStep))[col];
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ col = idx_col(left_x, last_col);
+
+ sum = 0.0625f * ((__global ushort*)((__global char*)srcData + idx_row(src_y - 2, last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + idx_row(src_y - 1, last_row) * srcStep))[col];
+ sum = sum + 0.375f * ((__global ushort*)((__global char*)srcData + idx_row(src_y , last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + idx_row(src_y + 1, last_row) * srcStep))[col];
+ sum = sum + 0.0625f * ((__global ushort*)((__global char*)srcData + idx_row(src_y + 2, last_row) * srcStep))[col];
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ col = idx_col(right_x, last_col);
+
+ sum = 0.0625f * ((__global ushort*)((__global char*)srcData + idx_row(src_y - 2, last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + idx_row(src_y - 1, last_row) * srcStep))[col];
+ sum = sum + 0.375f * ((__global ushort*)((__global char*)srcData + idx_row(src_y , last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global ushort*)((__global char*)srcData + idx_row(src_y + 1, last_row) * srcStep))[col];
+ sum = sum + 0.0625f * ((__global ushort*)((__global char*)srcData + idx_row(src_y + 2, last_row) * srcStep))[col];
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ if (get_local_id(0) < 128)
+ {
+ const int tid2 = get_local_id(0) * 2;
+
+ sum = 0.0625f * smem[2 + tid2 - 2];
+ sum = sum + 0.25f * smem[2 + tid2 - 1];
+ sum = sum + 0.375f * smem[2 + tid2 ];
+ sum = sum + 0.25f * smem[2 + tid2 + 1];
+ sum = sum + 0.0625f * smem[2 + tid2 + 2];
+
+ const int dst_x = (get_group_id(0) * get_local_size(0) + tid2) / 2;
+
+ if (dst_x < dstCols)
+ dst[y * dstStep / 2 + dst_x] = convert_ushort_sat_rte(sum);
+ }
+}
+
+///////////////////////////////////////////////////////////////////////
+////////////////////////// CV_16UC4 //////////////////////////////////
+///////////////////////////////////////////////////////////////////////
+
+__kernel void pyrDown_C4_D2(__global ushort4 * srcData, int srcStep, int srcRows, int srcCols, __global ushort4 *dst, int dstStep, int dstCols)
+{
+ const int x = get_global_id(0);
+ const int y = get_group_id(1);
+
+ __local float4 smem[256 + 4];
+
+ float4 sum;
+
+ const int src_y = 2*y;
+ const int last_row = srcRows - 1;
+ const int last_col = srcCols - 1;
+
+ float4 co1 = 0.375f;
+ float4 co2 = 0.25f;
+ float4 co3 = 0.0625f;
+
+ if (src_y >= 2 && src_y < srcRows - 2 && x >= 2 && x < srcCols - 2)
+ {
+ sum = co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y - 2) * srcStep / 4))[x]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y - 1) * srcStep / 4))[x]);
+ sum = sum + co1 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y ) * srcStep / 4))[x]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y + 1) * srcStep / 4))[x]);
+ sum = sum + co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y + 2) * srcStep / 4))[x]);
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ sum = co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y - 2) * srcStep / 4))[left_x]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y - 1) * srcStep / 4))[left_x]);
+ sum = sum + co1 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y ) * srcStep / 4))[left_x]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y + 1) * srcStep / 4))[left_x]);
+ sum = sum + co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y + 2) * srcStep / 4))[left_x]);
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ sum = co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y - 2) * srcStep / 4))[right_x]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y - 1) * srcStep / 4))[right_x]);
+ sum = sum + co1 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y ) * srcStep / 4))[right_x]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y + 1) * srcStep / 4))[right_x]);
+ sum = sum + co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + (src_y + 2) * srcStep / 4))[right_x]);
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+ else
+ {
+ int col = idx_col(x, last_col);
+
+ sum = co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co1 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y , last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col]);
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ col = idx_col(left_x, last_col);
+
+ sum = co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co1 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y , last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col]);
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ col = idx_col(right_x, last_col);
+
+ sum = co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co1 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y , last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co3 * convert_float4(((__global ushort4*)((__global char4*)srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col]);
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ if (get_local_id(0) < 128)
+ {
+ const int tid2 = get_local_id(0) * 2;
+
+ sum = co3 * smem[2 + tid2 - 2];
+ sum = sum + co2 * smem[2 + tid2 - 1];
+ sum = sum + co1 * smem[2 + tid2 ];
+ sum = sum + co2 * smem[2 + tid2 + 1];
+ sum = sum + co3 * smem[2 + tid2 + 2];
+
+ const int dst_x = (get_group_id(0) * get_local_size(0) + tid2) / 2;
+
+ if (dst_x < dstCols)
+ dst[y * dstStep / 8 + dst_x] = convert_ushort4_sat_rte(sum);
+ }
+}
+
+///////////////////////////////////////////////////////////////////////
+////////////////////////// CV_16SC1 //////////////////////////////////
+///////////////////////////////////////////////////////////////////////
+
+__kernel void pyrDown_C1_D3(__global short * srcData, int srcStep, int srcRows, int srcCols, __global short *dst, int dstStep, int dstCols)
+{
+ const int x = get_global_id(0);
+ const int y = get_group_id(1);
+
+ __local float smem[256 + 4];
+
+ float sum;
+
+ const int src_y = 2*y;
+ const int last_row = srcRows - 1;
+ const int last_col = srcCols - 1;
+
+ if (src_y >= 2 && src_y < srcRows - 2 && x >= 2 && x < srcCols - 2)
+ {
+ sum = 0.0625f * ((__global short*)((__global char*)srcData + (src_y - 2) * srcStep))[x];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + (src_y - 1) * srcStep))[x];
+ sum = sum + 0.375f * ((__global short*)((__global char*)srcData + (src_y ) * srcStep))[x];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + (src_y + 1) * srcStep))[x];
+ sum = sum + 0.0625f * ((__global short*)((__global char*)srcData + (src_y + 2) * srcStep))[x];
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ sum = 0.0625f * ((__global short*)((__global char*)srcData + (src_y - 2) * srcStep))[left_x];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + (src_y - 1) * srcStep))[left_x];
+ sum = sum + 0.375f * ((__global short*)((__global char*)srcData + (src_y ) * srcStep))[left_x];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + (src_y + 1) * srcStep))[left_x];
+ sum = sum + 0.0625f * ((__global short*)((__global char*)srcData + (src_y + 2) * srcStep))[left_x];
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ sum = 0.0625f * ((__global short*)((__global char*)srcData + (src_y - 2) * srcStep))[right_x];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + (src_y - 1) * srcStep))[right_x];
+ sum = sum + 0.375f * ((__global short*)((__global char*)srcData + (src_y ) * srcStep))[right_x];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + (src_y + 1) * srcStep))[right_x];
+ sum = sum + 0.0625f * ((__global short*)((__global char*)srcData + (src_y + 2) * srcStep))[right_x];
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+ else
+ {
+ int col = idx_col(x, last_col);
+
+ sum = 0.0625f * ((__global short*)((__global char*)srcData + idx_row(src_y - 2, last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + idx_row(src_y - 1, last_row) * srcStep))[col];
+ sum = sum + 0.375f * ((__global short*)((__global char*)srcData + idx_row(src_y , last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + idx_row(src_y + 1, last_row) * srcStep))[col];
+ sum = sum + 0.0625f * ((__global short*)((__global char*)srcData + idx_row(src_y + 2, last_row) * srcStep))[col];
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ col = idx_col(left_x, last_col);
+
+ sum = 0.0625f * ((__global short*)((__global char*)srcData + idx_row(src_y - 2, last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + idx_row(src_y - 1, last_row) * srcStep))[col];
+ sum = sum + 0.375f * ((__global short*)((__global char*)srcData + idx_row(src_y , last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + idx_row(src_y + 1, last_row) * srcStep))[col];
+ sum = sum + 0.0625f * ((__global short*)((__global char*)srcData + idx_row(src_y + 2, last_row) * srcStep))[col];
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ col = idx_col(right_x, last_col);
+
+ sum = 0.0625f * ((__global short*)((__global char*)srcData + idx_row(src_y - 2, last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + idx_row(src_y - 1, last_row) * srcStep))[col];
+ sum = sum + 0.375f * ((__global short*)((__global char*)srcData + idx_row(src_y , last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global short*)((__global char*)srcData + idx_row(src_y + 1, last_row) * srcStep))[col];
+ sum = sum + 0.0625f * ((__global short*)((__global char*)srcData + idx_row(src_y + 2, last_row) * srcStep))[col];
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ if (get_local_id(0) < 128)
+ {
+ const int tid2 = get_local_id(0) * 2;
+
+ sum = 0.0625f * smem[2 + tid2 - 2];
+ sum = sum + 0.25f * smem[2 + tid2 - 1];
+ sum = sum + 0.375f * smem[2 + tid2 ];
+ sum = sum + 0.25f * smem[2 + tid2 + 1];
+ sum = sum + 0.0625f * smem[2 + tid2 + 2];
+
+ const int dst_x = (get_group_id(0) * get_local_size(0) + tid2) / 2;
+
+ if (dst_x < dstCols)
+ dst[y * dstStep / 2 + dst_x] = convert_short_sat_rte(sum);
+ }
+}
+
+///////////////////////////////////////////////////////////////////////
+////////////////////////// CV_16SC4 //////////////////////////////////
+///////////////////////////////////////////////////////////////////////
+
+__kernel void pyrDown_C4_D3(__global short4 * srcData, int srcStep, int srcRows, int srcCols, __global short4 *dst, int dstStep, int dstCols)
+{
+ const int x = get_global_id(0);
+ const int y = get_group_id(1);
+
+ __local float4 smem[256 + 4];
+
+ float4 sum;
+
+ const int src_y = 2*y;
+ const int last_row = srcRows - 1;
+ const int last_col = srcCols - 1;
+
+ float4 co1 = 0.375f;
+ float4 co2 = 0.25f;
+ float4 co3 = 0.0625f;
+
+ if (src_y >= 2 && src_y < srcRows - 2 && x >= 2 && x < srcCols - 2)
+ {
+ sum = co3 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y - 2) * srcStep / 4))[x]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y - 1) * srcStep / 4))[x]);
+ sum = sum + co1 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y ) * srcStep / 4))[x]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y + 1) * srcStep / 4))[x]);
+ sum = sum + co3 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y + 2) * srcStep / 4))[x]);
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ sum = co3 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y - 2) * srcStep / 4))[left_x]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y - 1) * srcStep / 4))[left_x]);
+ sum = sum + co1 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y ) * srcStep / 4))[left_x]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y + 1) * srcStep / 4))[left_x]);
+ sum = sum + co3 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y + 2) * srcStep / 4))[left_x]);
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ sum = co3 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y - 2) * srcStep / 4))[right_x]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y - 1) * srcStep / 4))[right_x]);
+ sum = sum + co1 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y ) * srcStep / 4))[right_x]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y + 1) * srcStep / 4))[right_x]);
+ sum = sum + co3 * convert_float4(((__global short4*)((__global char4*)srcData + (src_y + 2) * srcStep / 4))[right_x]);
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+ else
+ {
+ int col = idx_col(x, last_col);
+
+ sum = co3 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co1 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y , last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co3 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col]);
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ col = idx_col(left_x, last_col);
+
+ sum = co3 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co1 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y , last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co3 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col]);
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ col = idx_col(right_x, last_col);
+
+ sum = co3 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co1 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y , last_row) * srcStep / 4))[col]);
+ sum = sum + co2 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col]);
+ sum = sum + co3 * convert_float4(((__global short4*)((__global char4*)srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col]);
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ if (get_local_id(0) < 128)
+ {
+ const int tid2 = get_local_id(0) * 2;
+
+ sum = co3 * smem[2 + tid2 - 2];
+ sum = sum + co2 * smem[2 + tid2 - 1];
+ sum = sum + co1 * smem[2 + tid2 ];
+ sum = sum + co2 * smem[2 + tid2 + 1];
+ sum = sum + co3 * smem[2 + tid2 + 2];
+
+ const int dst_x = (get_group_id(0) * get_local_size(0) + tid2) / 2;
+
+ if (dst_x < dstCols)
+ dst[y * dstStep / 8 + dst_x] = convert_short4_sat_rte(sum);
+ }
+}
+
+///////////////////////////////////////////////////////////////////////
+////////////////////////// CV_32FC1 //////////////////////////////////
+///////////////////////////////////////////////////////////////////////
+
+__kernel void pyrDown_C1_D5(__global float * srcData, int srcStep, int srcRows, int srcCols, __global float *dst, int dstStep, int dstCols)
+{
+ const int x = get_global_id(0);
+ const int y = get_group_id(1);
+
+ __local float smem[256 + 4];
+
+ float sum;
+
+ const int src_y = 2*y;
+ const int last_row = srcRows - 1;
+ const int last_col = srcCols - 1;
+
+ if (src_y >= 2 && src_y < srcRows - 2 && x >= 2 && x < srcCols - 2)
+ {
+ sum = 0.0625f * ((__global float*)((__global char*)srcData + (src_y - 2) * srcStep))[x];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + (src_y - 1) * srcStep))[x];
+ sum = sum + 0.375f * ((__global float*)((__global char*)srcData + (src_y ) * srcStep))[x];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + (src_y + 1) * srcStep))[x];
+ sum = sum + 0.0625f * ((__global float*)((__global char*)srcData + (src_y + 2) * srcStep))[x];
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ sum = 0.0625f * ((__global float*)((__global char*)srcData + (src_y - 2) * srcStep))[left_x];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + (src_y - 1) * srcStep))[left_x];
+ sum = sum + 0.375f * ((__global float*)((__global char*)srcData + (src_y ) * srcStep))[left_x];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + (src_y + 1) * srcStep))[left_x];
+ sum = sum + 0.0625f * ((__global float*)((__global char*)srcData + (src_y + 2) * srcStep))[left_x];
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ sum = 0.0625f * ((__global float*)((__global char*)srcData + (src_y - 2) * srcStep))[right_x];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + (src_y - 1) * srcStep))[right_x];
+ sum = sum + 0.375f * ((__global float*)((__global char*)srcData + (src_y ) * srcStep))[right_x];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + (src_y + 1) * srcStep))[right_x];
+ sum = sum + 0.0625f * ((__global float*)((__global char*)srcData + (src_y + 2) * srcStep))[right_x];
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+ else
+ {
+ int col = idx_col(x, last_col);
+
+ sum = 0.0625f * ((__global float*)((__global char*)srcData + idx_row(src_y - 2, last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + idx_row(src_y - 1, last_row) * srcStep))[col];
+ sum = sum + 0.375f * ((__global float*)((__global char*)srcData + idx_row(src_y , last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + idx_row(src_y + 1, last_row) * srcStep))[col];
+ sum = sum + 0.0625f * ((__global float*)((__global char*)srcData + idx_row(src_y + 2, last_row) * srcStep))[col];
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ col = idx_col(left_x, last_col);
+
+ sum = 0.0625f * ((__global float*)((__global char*)srcData + idx_row(src_y - 2, last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + idx_row(src_y - 1, last_row) * srcStep))[col];
+ sum = sum + 0.375f * ((__global float*)((__global char*)srcData + idx_row(src_y , last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + idx_row(src_y + 1, last_row) * srcStep))[col];
+ sum = sum + 0.0625f * ((__global float*)((__global char*)srcData + idx_row(src_y + 2, last_row) * srcStep))[col];
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ col = idx_col(right_x, last_col);
+
+ sum = 0.0625f * ((__global float*)((__global char*)srcData + idx_row(src_y - 2, last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + idx_row(src_y - 1, last_row) * srcStep))[col];
+ sum = sum + 0.375f * ((__global float*)((__global char*)srcData + idx_row(src_y , last_row) * srcStep))[col];
+ sum = sum + 0.25f * ((__global float*)((__global char*)srcData + idx_row(src_y + 1, last_row) * srcStep))[col];
+ sum = sum + 0.0625f * ((__global float*)((__global char*)srcData + idx_row(src_y + 2, last_row) * srcStep))[col];
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ if (get_local_id(0) < 128)
+ {
+ const int tid2 = get_local_id(0) * 2;
+
+ sum = 0.0625f * smem[2 + tid2 - 2];
+ sum = sum + 0.25f * smem[2 + tid2 - 1];
+ sum = sum + 0.375f * smem[2 + tid2 ];
+ sum = sum + 0.25f * smem[2 + tid2 + 1];
+ sum = sum + 0.0625f * smem[2 + tid2 + 2];
+
+ const int dst_x = (get_group_id(0) * get_local_size(0) + tid2) / 2;
+
+ if (dst_x < dstCols)
+ dst[y * dstStep / 4 + dst_x] = sum;
+ }
+}
+
+///////////////////////////////////////////////////////////////////////
+////////////////////////// CV_32FC4 //////////////////////////////////
+///////////////////////////////////////////////////////////////////////
+
+__kernel void pyrDown_C4_D5(__global float4 * srcData, int srcStep, int srcRows, int srcCols, __global float4 *dst, int dstStep, int dstCols)
+{
+ const int x = get_global_id(0);
+ const int y = get_group_id(1);
+
+ __local float4 smem[256 + 4];
+
+ float4 sum;
+
+ const int src_y = 2*y;
+ const int last_row = srcRows - 1;
+ const int last_col = srcCols - 1;
+
+ float4 co1 = 0.375f;
+ float4 co2 = 0.25f;
+ float4 co3 = 0.0625f;
+
+ if (src_y >= 2 && src_y < srcRows - 2 && x >= 2 && x < srcCols - 2)
+ {
+ sum = co3 * ((__global float4*)((__global char4*)srcData + (src_y - 2) * srcStep / 4))[x];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + (src_y - 1) * srcStep / 4))[x];
+ sum = sum + co1 * ((__global float4*)((__global char4*)srcData + (src_y ) * srcStep / 4))[x];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + (src_y + 1) * srcStep / 4))[x];
+ sum = sum + co3 * ((__global float4*)((__global char4*)srcData + (src_y + 2) * srcStep / 4))[x];
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ sum = co3 * ((__global float4*)((__global char4*)srcData + (src_y - 2) * srcStep / 4))[left_x];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + (src_y - 1) * srcStep / 4))[left_x];
+ sum = sum + co1 * ((__global float4*)((__global char4*)srcData + (src_y ) * srcStep / 4))[left_x];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + (src_y + 1) * srcStep / 4))[left_x];
+ sum = sum + co3 * ((__global float4*)((__global char4*)srcData + (src_y + 2) * srcStep / 4))[left_x];
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ sum = co3 * ((__global float4*)((__global char4*)srcData + (src_y - 2) * srcStep / 4))[right_x];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + (src_y - 1) * srcStep / 4))[right_x];
+ sum = sum + co1 * ((__global float4*)((__global char4*)srcData + (src_y ) * srcStep / 4))[right_x];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + (src_y + 1) * srcStep / 4))[right_x];
+ sum = sum + co3 * ((__global float4*)((__global char4*)srcData + (src_y + 2) * srcStep / 4))[right_x];
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+ else
+ {
+ int col = idx_col(x, last_col);
+
+ sum = co3 * ((__global float4*)((__global char4*)srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col];
+ sum = sum + co1 * ((__global float4*)((__global char4*)srcData + idx_row(src_y , last_row) * srcStep / 4))[col];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col];
+ sum = sum + co3 * ((__global float4*)((__global char4*)srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col];
+
+ smem[2 + get_local_id(0)] = sum;
+
+ if (get_local_id(0) < 2)
+ {
+ const int left_x = x - 2;
+
+ col = idx_col(left_x, last_col);
+
+ sum = co3 * ((__global float4*)((__global char4*)srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col];
+ sum = sum + co1 * ((__global float4*)((__global char4*)srcData + idx_row(src_y , last_row) * srcStep / 4))[col];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col];
+ sum = sum + co3 * ((__global float4*)((__global char4*)srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col];
+
+ smem[get_local_id(0)] = sum;
+ }
+
+ if (get_local_id(0) > 253)
+ {
+ const int right_x = x + 2;
+
+ col = idx_col(right_x, last_col);
+
+ sum = co3 * ((__global float4*)((__global char4*)srcData + idx_row(src_y - 2, last_row) * srcStep / 4))[col];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + idx_row(src_y - 1, last_row) * srcStep / 4))[col];
+ sum = sum + co1 * ((__global float4*)((__global char4*)srcData + idx_row(src_y , last_row) * srcStep / 4))[col];
+ sum = sum + co2 * ((__global float4*)((__global char4*)srcData + idx_row(src_y + 1, last_row) * srcStep / 4))[col];
+ sum = sum + co3 * ((__global float4*)((__global char4*)srcData + idx_row(src_y + 2, last_row) * srcStep / 4))[col];
+
+ smem[4 + get_local_id(0)] = sum;
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ if (get_local_id(0) < 128)
+ {
+ const int tid2 = get_local_id(0) * 2;
+
+ sum = co3 * smem[2 + tid2 - 2];
+ sum = sum + co2 * smem[2 + tid2 - 1];
+ sum = sum + co1 * smem[2 + tid2 ];
+ sum = sum + co2 * smem[2 + tid2 + 1];
+ sum = sum + co3 * smem[2 + tid2 + 2];
+
+ const int dst_x = (get_group_id(0) * get_local_size(0) + tid2) / 2;
+
+ if (dst_x < dstCols)
+ dst[y * dstStep / 16 + dst_x] = sum;
+ }
+}