1/* 2 * Copyright (c) 2018-2021 Arm Limited. 3 * 4 * SPDX-License-Identifier: MIT 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24#include "helpers.h" 25 26#if defined(DATA_TYPE) && defined(SRC_DEPTH) && defined(STRIDE) 27 28#define CALCULATE_SRC_COORDINATES(xo, yo, zo, xi, yi, zi) \ 29 ({ \ 30 int offset = zo / (int)SRC_DEPTH; \ 31 xi = xo * (int)STRIDE + offset % (int)STRIDE; \ 32 yi = yo * (int)STRIDE + offset / (int)STRIDE; \ 33 zi = zo % SRC_DEPTH; \ 34 }) 35 36/** Performs a reorganization layer of input tensor to the output tensor when the data layout is NHWC 37 * 38 * @note The data type must be passed at compile time using -DDATA_TYPE: e.g. -DDATA_TYPE=float 39 * @note The depth of the input tensor must be passed at compile time using -DSRC_DEPTH: e.g. -DSRC_DEPTH=64 40 * @note The distance between 2 consecutive pixels along the x and y direction must be passed at compile time using -DSTRIDE: e.g. -DSTRIDE=2 41 * 42 * @param[in] src_ptr Pointer to the source tensor. Supported data types: All 43 * @param[in] src_stride_x Stride of the source tensor in X dimension (in bytes) 44 * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) 45 * @param[in] src_stride_y Stride of the source tensor in Y dimension (in bytes) 46 * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) 47 * @param[in] src_stride_z Stride of the source tensor in Z dimension (in bytes) 48 * @param[in] src_step_z src_stride_z * number of elements along Z processed per workitem(in bytes) 49 * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source tensor 50 * @param[out] dst_ptr Pointer to the destination tensor. Supported data types: same as @p src_ptr 51 * @param[in] dst_stride_x Stride of the destination tensor in X dimension (in bytes) 52 * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) 53 * @param[in] dst_stride_y Stride of the destination tensor in Y dimension (in bytes) 54 * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) 55 * @param[in] dst_stride_z Stride of the source tensor in Z dimension (in bytes) 56 * @param[in] dst_step_z dst_stride_z * number of elements along Z processed per workitem(in bytes) 57 * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination tensor 58 */ 59__kernel void reorg_layer_nhwc( 60 TENSOR3D_DECLARATION(src), 61 TENSOR3D_DECLARATION(dst)) 62{ 63 Tensor3D out = CONVERT_TO_TENSOR3D_STRUCT(dst); 64 65 int xo = get_global_id(1); 66 int yo = get_global_id(2); 67 int zo = get_global_id(0); 68 int xi, yi, zi; 69 70 CALCULATE_SRC_COORDINATES(xo, yo, zo, xi, yi, zi); 71 72 int src_offset = zi * sizeof(DATA_TYPE) + xi * src_stride_y + yi * src_stride_z; 73 74 *((__global DATA_TYPE *)out.ptr) = *((__global DATA_TYPE *)(src_ptr + src_offset_first_element_in_bytes + src_offset)); 75} 76#endif // // defined(DATA_TYPE) && defined(SRC_DEPTH) && defined(STRIDE)