| /* |
| * Copyright (c) 2016, 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" |
| |
| /** This function computes the horizontal integral of the image. |
| * |
| * @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: U32 |
| * @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 integral_horizontal( |
| IMAGE_DECLARATION(src), |
| IMAGE_DECLARATION(dst)) |
| { |
| Image src = CONVERT_TO_IMAGE_STRUCT(src); |
| Image dst = CONVERT_TO_IMAGE_STRUCT(dst); |
| |
| uint prev = 0; |
| |
| for(uint j = 0; j < src_step_x; j += 16) |
| { |
| barrier(CLK_GLOBAL_MEM_FENCE); |
| uint16 res = convert_uint16(vload16(0, offset(&src, j, 0))); |
| res.s0 += prev; |
| res.s1 += res.s0; |
| res.s2 += res.s1; |
| res.s3 += res.s2; |
| res.s4 += res.s3; |
| res.s5 += res.s4; |
| res.s6 += res.s5; |
| res.s7 += res.s6; |
| res.s8 += res.s7; |
| res.s9 += res.s8; |
| res.sA += res.s9; |
| res.sB += res.sA; |
| res.sC += res.sB; |
| res.sD += res.sC; |
| res.sE += res.sD; |
| res.sF += res.sE; |
| prev = res.sF; |
| vstore16(res, 0, (__global uint *)offset(&dst, j, 0)); |
| } |
| } |
| |
| /** This function computes the vertical integral of the image. |
| * |
| * @param[in,out] src_ptr Pointer to the source image. Supported data types: U32 |
| * @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[in] height Image height. |
| */ |
| __kernel void integral_vertical( |
| IMAGE_DECLARATION(src), |
| uint height) |
| { |
| Image src = CONVERT_TO_IMAGE_STRUCT(src); |
| |
| uint8 prev = vload8(0, (__global uint *)offset(&src, 0, 0)); |
| for(uint j = 1; j < height; ++j) |
| { |
| barrier(CLK_GLOBAL_MEM_FENCE); |
| uint8 res = vload8(0, (__global uint *)offset(&src, 0, j)); |
| res += prev; |
| vstore8(res, 0, (__global uint *)offset(&src, 0, j)); |
| prev = res; |
| } |
| } |