COMPMID-344 Updated doxygen
Change-Id: I32f7b84daa560e460b77216add529c8fa8b327ae
diff --git a/src/core/CL/cl_kernels/non_linear_filter3x3.cl b/src/core/CL/cl_kernels/non_linear_filter3x3.cl
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+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "helpers.h"
+#include "non_linear_filter_helpers.h"
+
+/** This function applies a non linear filter on a 3x3 box basis on an input image.
+ *
+ * @note The needed filter operation is defined through the preprocessor by passing either -DMIN, -DMAX or -DMEDIAN.
+ *
+ * @param[in] src_ptr Pointer to the source image. Supported data types: U8
+ * @param[in] src_stride_x Stride of the source image in X dimension (in bytes)
+ * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes)
+ * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image
+ * @param[out] dst_ptr Pointer to the destination image. Supported data types: U8
+ * @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes)
+ * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes)
+ * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image
+ */
+__kernel void non_linear_filter_box3x3(
+ IMAGE_DECLARATION(src),
+ IMAGE_DECLARATION(dst))
+{
+ Image src = CONVERT_TO_IMAGE_STRUCT(src);
+ Image dst = CONVERT_TO_IMAGE_STRUCT(dst);
+
+ // Load values
+ uchar16 top = vload16(0, offset(&src, -1, -1));
+ uchar16 middle = vload16(0, offset(&src, -1, 0));
+ uchar16 bottom = vload16(0, offset(&src, -1, 1));
+
+ // Apply respective filter
+#if defined MIN
+ uchar16 tmp = min(top, min(middle, bottom));
+ uchar8 out = row_reduce_min_3(tmp);
+#elif defined MAX
+ uchar16 tmp = max(top, max(middle, bottom));
+ uchar8 out = row_reduce_max_3(tmp);
+#elif defined MEDIAN
+ uchar8 p0 = top.s01234567;
+ uchar8 p1 = top.s12345678;
+ uchar8 p2 = top.s23456789;
+ uchar8 p3 = middle.s01234567;
+ uchar8 p4 = middle.s12345678;
+ uchar8 p5 = middle.s23456789;
+ uchar8 p6 = bottom.s01234567;
+ uchar8 p7 = bottom.s12345678;
+ uchar8 p8 = bottom.s23456789;
+ uchar8 out = sort9(p0, p1, p2, p3, p4, p5, p6, p7, p8);
+#else
+#error "Unsupported filter function"
+#endif
+
+ // Store result
+ vstore8(out, 0, dst.ptr);
+}
+
+/** This function applies a non linear filter on a 3x3 cross basis on an input image.
+ *
+ * @note The needed filter operation is defined through the preprocessor by passing either -DMIN, -DMAX or -DMEDIAN.
+ *
+ * @param[in] src_ptr Pointer to the source image. Supported data types: U8
+ * @param[in] src_stride_x Stride of the source image in X dimension (in bytes)
+ * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes)
+ * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image
+ * @param[out] dst_ptr Pointer to the destination image. Supported data types: U8
+ * @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes)
+ * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes)
+ * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image
+ */
+__kernel void non_linear_filter_cross3x3(
+ IMAGE_DECLARATION(src),
+ IMAGE_DECLARATION(dst))
+{
+ Image src = CONVERT_TO_IMAGE_STRUCT(src);
+ Image dst = CONVERT_TO_IMAGE_STRUCT(dst);
+
+ // Load values
+ uchar8 top = vload8(0, offset(&src, 0, -1));
+ uchar16 middle = vload16(0, offset(&src, -1, 0));
+ uchar8 bottom = vload8(0, offset(&src, 0, 1));
+
+ // Apply respective filter
+#if defined MIN
+ uchar8 tmp_middle = row_reduce_min_3(middle);
+ uchar8 out = min(tmp_middle, min(top, bottom));
+#elif defined MAX
+ uchar8 tmp_middle = row_reduce_max_3(middle);
+ uchar8 out = max(tmp_middle, max(top, bottom));
+#elif defined MEDIAN
+ uchar8 p0 = top.s01234567;
+ uchar8 p1 = middle.s01234567;
+ uchar8 p2 = middle.s12345678;
+ uchar8 p3 = middle.s23456789;
+ uchar8 p4 = bottom.s01234567;
+ uchar8 out = sort5(p0, p1, p2, p3, p4);
+#else
+#error "Unsupported filter function"
+#endif
+
+ // Store result
+ vstore8(out, 0, dst.ptr);
+}
+
+/** This function applies a non linear filter on a 3x3 disk basis on an input image.
+ *
+ * @note The needed filter operation is defined through the preprocessor by passing either -DMIN, -DMAX or -DMEDIAN.
+ *
+ * @param[in] src_ptr Pointer to the source image. Supported data types: U8
+ * @param[in] src_stride_x Stride of the source image in X dimension (in bytes)
+ * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] src_stride_y Stride of the source image in Y dimension (in bytes)
+ * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source image
+ * @param[out] dst_ptr Pointer to the destination image. Supported data types: U8
+ * @param[in] dst_stride_x Stride of the destination image in X dimension (in bytes)
+ * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes)
+ * @param[in] dst_stride_y Stride of the destination image in Y dimension (in bytes)
+ * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes)
+ * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination image
+ */
+__kernel void non_linear_filter_disk3x3(
+ IMAGE_DECLARATION(src),
+ IMAGE_DECLARATION(dst))
+{
+ Image src = CONVERT_TO_IMAGE_STRUCT(src);
+ Image dst = CONVERT_TO_IMAGE_STRUCT(dst);
+
+ // Load values
+ uchar16 top = vload16(0, offset(&src, -1, -1));
+ uchar16 middle = vload16(0, offset(&src, -1, 0));
+ uchar16 bottom = vload16(0, offset(&src, -1, 1));
+
+ // Apply respective filter
+#if defined MIN
+ uchar16 tmp = min(top, min(middle, bottom));
+ uchar8 out = row_reduce_min_3(tmp);
+#elif defined MAX
+ uchar16 tmp = max(top, max(middle, bottom));
+ uchar8 out = row_reduce_max_3(tmp);
+#elif defined MEDIAN
+ uchar8 p0 = top.s01234567;
+ uchar8 p1 = top.s12345678;
+ uchar8 p2 = top.s23456789;
+ uchar8 p3 = middle.s01234567;
+ uchar8 p4 = middle.s12345678;
+ uchar8 p5 = middle.s23456789;
+ uchar8 p6 = bottom.s01234567;
+ uchar8 p7 = bottom.s12345678;
+ uchar8 p8 = bottom.s23456789;
+ uchar8 out = sort9(p0, p1, p2, p3, p4, p5, p6, p7, p8);
+#else
+#error "Unsupported filter function"
+#endif
+
+ // Store result
+ vstore8(out, 0, dst.ptr);
+}