+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+
+#define DIG(a) a,
+__constant float kx[] = { KERNEL_MATRIX_X };
+__constant float ky[] = { KERNEL_MATRIX_Y };
+
+#define OP(y, x) (convert_float4(arr[y * 5 + x]) * ky[y] * kx[x])
+
+#define FILL_ARR(s1, s2, n, e1, e2) \
+ arr[5 * n + 0] = row_s ? (uchar4)(s1, s2, line[n].s23) : (uchar4)(line[n].s0123); \
+ arr[5 * n + 1] = row_s ? (uchar4)(s2, line[n].s234) : (uchar4)(line[n].s1234); \
+ arr[5 * n + 2] = (uchar4)(line[n].s2345); \
+ arr[5 * n + 3] = row_e ? (uchar4)(line[n].s345, e1) : (uchar4)(line[n].s3456); \
+ arr[5 * n + 4] = row_e ? (uchar4)(line[n].s45, e1, e2) : (uchar4)(line[n].s4567);
+
+__kernel void gaussianBlur5x5_8UC1_cols4(__global const uchar* src, int src_step,
+ __global uint* dst, int dst_step, int rows, int cols)
+{
+ int x = get_global_id(0) * 4;
+ int y = get_global_id(1);
+
+ if (x >= cols || y >= rows) return;
+
+ uchar8 line[5];
+ int offset, src_index;
+
+ src_index = x + (y - 2) * src_step - 2;
+ offset = max(0, src_index + 2 * src_step);
+ line[2] = vload8(0, src + offset);
+ if (offset == 0) line[2] = (uchar8)(0, 0, line[2].s0123, line[2].s45);
+
+#if defined BORDER_CONSTANT || defined BORDER_REPLICATE
+ uchar8 tmp;
+#ifdef BORDER_CONSTANT
+ tmp = (uchar8)0;
+#elif defined BORDER_REPLICATE
+ tmp = line[2];
+#endif
+ line[0] = line[1] = tmp;
+ if (y > 1)
+ {
+ offset = max(0, src_index);
+ line[0] = vload8(0, src + offset);
+ if (offset == 0) line[0] = (uchar8)(0, 0, line[0].s0123, line[0].s45);
+ }
+
+ if (y > 0)
+ {
+ offset = max(0, src_index + src_step);
+ line[1] = vload8(0, src + offset);
+ if (offset == 0) line[1] = (uchar8)(0, 0, line[1].s0123, line[1].s45);
+ }
+
+ line[3] = (y == (rows - 1)) ? tmp : vload8(0, src + src_index + 3 * src_step);
+ line[4] = (y >= (rows - 2)) ? tmp : vload8(0, src + src_index + 4 * src_step);
+#elif BORDER_REFLECT
+ int t;
+ t = (y <= 1) ? (abs(y - 1) - y + 2) : 0;
+ offset = max(0, src_index + t * src_step);
+ line[0] = vload8(0, src + offset);
+ if (offset == 0) line[0] = (uchar8)(0, 0, line[0].s0123, line[0].s45);
+
+ if (y == 0)
+ line[1] = line[2];
+ else
+ {
+ offset = max(0, src_index + 1 * src_step);
+ line[1] = vload8(0, src + offset);
+ if (offset == 0) line[1] = (uchar8)(0, 0, line[1].s0123, line[0].s45);
+ }
+
+ line[3] = (y == (rows - 1)) ? line[2] : vload8(0, src + src_index + 3 * src_step);
+
+ t = (y >= (rows - 2)) ? (abs(y - (rows - 1)) - (y - (rows - 2)) + 2) : 4;
+ line[4] = vload8(0, src + src_index + t * src_step);
+#elif BORDER_REFLECT_101
+ if (y == 1)
+ line[0] = line[2];
+ else
+ {
+ offset = (y == 0) ? (src_index + 4 * src_step) : max(0, src_index);
+ line[0] = vload8(0, src + offset);
+ if (offset == 0) line[0] = (uchar8)(0, 0, line[0].s0123, line[0].s45);
+ }
+
+ offset = (y == 0) ? (src_index + 3 * src_step) : max(0, src_index + 1 * src_step);
+ line[1] = vload8(0, src + offset);
+ if (offset == 0) line[1] = (uchar8)(0, 0, line[1].s0123, line[1].s45);
+
+ line[3] = vload8(0, src + src_index + ((y == (rows - 1)) ? 1 : 3) * src_step);
+ if (y == (rows - 2))
+ line[4] = line[2];
+ else
+ {
+ line[4] = vload8(0, src + src_index + ((y == (rows - 1)) ? 1 : 4) * src_step);
+ }
+#endif
+
+ bool row_s = (x == 0);
+ bool row_e = ((x + 4) == cols);
+ uchar4 arr[25];
+ uchar s, e;
+
+#ifdef BORDER_CONSTANT
+ s = e = 0;
+
+ FILL_ARR(s, s, 0, e, e);
+ FILL_ARR(s, s, 1, e, e);
+ FILL_ARR(s, s, 2, e, e);
+ FILL_ARR(s, s, 3, e, e);
+ FILL_ARR(s, s, 4, e, e);
+#elif defined BORDER_REPLICATE
+ s = line[0].s2;
+ e = line[0].s5;
+ FILL_ARR(s, s, 0, e, e);
+
+ s = line[1].s2;
+ e = line[1].s5;
+ FILL_ARR(s, s, 1, e, e);
+
+ s = line[2].s2;
+ e = line[2].s5;
+ FILL_ARR(s, s, 2, e, e);
+
+ s = line[3].s2;
+ e = line[3].s5;
+ FILL_ARR(s, s, 3, e, e);
+
+ s = line[4].s2;
+ e = line[4].s5;
+ FILL_ARR(s, s, 4, e, e);
+#elif BORDER_REFLECT
+ uchar s1, s2;
+ uchar e1, e2;
+
+ s1 = line[0].s3;
+ s2 = line[0].s2;
+ e1 = line[0].s5;
+ e2 = line[0].s4;
+ FILL_ARR(s1, s2, 0, e1, e2);
+
+ s1 = line[1].s3;
+ s2 = line[1].s2;
+ e1 = line[1].s5;
+ e2 = line[1].s4;
+ FILL_ARR(s1, s2, 1, e1, e2);
+
+ s1 = line[2].s3;
+ s2 = line[2].s2;
+ e1 = line[2].s5;
+ e2 = line[2].s4;
+ FILL_ARR(s1, s2, 2, e1, e2);
+
+ s1 = line[3].s3;
+ s2 = line[3].s2;
+ e1 = line[3].s5;
+ e2 = line[3].s4;
+ FILL_ARR(s1, s2, 3, e1, e2);
+
+ s1 = line[4].s3;
+ s2 = line[4].s2;
+ e1 = line[4].s5;
+ e2 = line[4].s4;
+ FILL_ARR(s1, s2, 4, e1, e2);
+#elif BORDER_REFLECT_101
+ s = line[0].s4;
+ e = line[0].s3;
+ FILL_ARR(s, e, 0, s, e);
+
+ s = line[1].s4;
+ e = line[1].s3;
+ FILL_ARR(s, e, 1, s, e);
+
+ s = line[2].s4;
+ e = line[2].s3;
+ FILL_ARR(s, e, 2, s, e);
+
+ s = line[3].s4;
+ e = line[3].s3;
+ FILL_ARR(s, e, 3, s, e);
+
+ s = line[4].s4;
+ e = line[4].s3;
+ FILL_ARR(s, e, 4, s, e);
+#endif
+
+ float4 sum;
+ sum = OP(0, 0) + OP(0, 1) + OP(0, 2) + OP(0, 3) + OP(0, 4) +
+ OP(1, 0) + OP(1, 1) + OP(1, 2) + OP(1, 3) + OP(1, 4) +
+ OP(2, 0) + OP(2, 1) + OP(2, 2) + OP(2, 3) + OP(2, 4) +
+ OP(3, 0) + OP(3, 1) + OP(3, 2) + OP(3, 3) + OP(3, 4) +
+ OP(4, 0) + OP(4, 1) + OP(4, 2) + OP(4, 3) + OP(4, 4);
+
+ int dst_index = (x / 4) + y * (dst_step / 4);
+ dst[dst_index] = as_uint(convert_uchar4_sat_rte(sum));
+}