1/* 2 * Copyright (c) 2018-2020 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_WIDTH) && defined(SRC_HEIGHT) && defined(SRC_DEPTH) 27 28/** This opencl kernel flattens the first 3 dimensions of the input tensor 29 * 30 * @note Datatype should be given as a preprocessor argument using -DDATA_TYPE=type. e.g. -DDATA_TYPE=float 31 * @note The width, height and depth of the input tensor must be passed at compile time using -DSRC_WIDTH, -DSRC_HEIGHT and -DSRC_DEPTH. e.g. -DSRC_WIDTH=24, -DSRC_HEIGHT=24, -DSRC_DEPTH=16 32 * @note If the output has 3 dimensions, the 2nd dimension of the output tensor must be passed at compile time using -DDST_DIM1. e.g -DDST_DIM1=3 33 * 34 * @param[in] src_ptr Pointer to the source tensor. Supported data types: All 35 * @param[in] src_stride_x Stride of the source tensor in X dimension (in bytes) 36 * @param[in] src_step_x src_stride_x * number of elements along X processed per workitem(in bytes) 37 * @param[in] src_stride_y Stride of the source tensor in Y dimension (in bytes) 38 * @param[in] src_step_y src_stride_y * number of elements along Y processed per workitem(in bytes) 39 * @param[in] src_stride_z Stride of the source tensor in Z dimension (in bytes) 40 * @param[in] src_step_z src_stride_z * number of elements along Y processed per workitem(in bytes) 41 * @param[in] src_stride_w Stride of the source tensor in W dimension (in bytes) 42 * @param[in] src_step_w src_stride_w * number of elements along Y processed per workitem(in bytes) 43 * @param[in] src_offset_first_element_in_bytes The offset of the first element in the source tensor 44 * @param[out] dst_ptr Pointer to the destination tensor. Same as @p src_ptr 45 * @param[in] dst_stride_x Stride of the destination tensor in X dimension (in bytes) 46 * @param[in] dst_step_x dst_stride_x * number of elements along X processed per workitem(in bytes) 47 * @param[in] dst_stride_y Stride of the destination tensor in Y dimension (in bytes) 48 * @param[in] dst_step_y dst_stride_y * number of elements along Y processed per workitem(in bytes) 49 * @param[in] dst_stride_z Stride of the destination tensor in Z dimension (in bytes) 50 * @param[in] dst_step_z dst_stride_z * number of elements along Z processed per workitem(in bytes) 51 * @param[in] dst_offset_first_element_in_bytes The offset of the first element in the destination tensor 52 */ 53__kernel void flatten( 54 TENSOR4D_DECLARATION(src), 55 TENSOR3D_DECLARATION(dst)) 56{ 57 Tensor4D src = CONVERT_TO_TENSOR4D_STRUCT(src, SRC_DEPTH); 58 59 uint c = get_global_id(2) % SRC_DEPTH; // input feature map 60 uint b0 = get_global_id(2) / SRC_DEPTH; // batch id 61 uint b1 = 0; 62 63#if defined(DST_DIM1) 64 uint b_tmp = b0; 65 b0 = b_tmp % DST_DIM1; // batch id0 66 b1 = b_tmp / DST_DIM1; // batch id1 67#endif // defined(DST_DIM1) 68 69 __global uchar *output_ptr = dst_ptr + dst_offset_first_element_in_bytes + (get_global_id(0) + get_global_id(1) * (uint)SRC_WIDTH + c * (uint)(SRC_WIDTH * SRC_HEIGHT)) * sizeof( 70 DATA_TYPE) + b0 * dst_stride_y + b1 * dst_stride_z; 71 72 *((__global DATA_TYPE *)output_ptr) = *((__global DATA_TYPE *)src.ptr); 73} 74#endif // defined(DATA_TYPE) && defined(SRC_WIDTH) && defined(SRC_HEIGHT)