1 /* 2 * Copyright (c) 2019 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 25 #pragma once 26 27 #include <cstddef> 28 29 // Utilities for copying tensor tiles and adding/removing padding. 30 namespace padding 31 { 32 33 /* Copy a tile and apply padding to the output copy. 34 */ 35 template <typename T> 36 void copy_and_pad_tile( 37 unsigned int tile_rows, 38 unsigned int tile_cols, 39 unsigned int n_channels, 40 const T *inptr, 41 unsigned int in_row_stride, 42 unsigned int in_col_stride, 43 T* outptr, 44 unsigned int out_row_stride, 45 unsigned int out_col_stride, 46 unsigned int pad_top, 47 unsigned int pad_left, 48 unsigned int pad_bottom, 49 unsigned int pad_right, 50 T pad_value=static_cast<T>(0) 51 ); 52 53 /** Copy a tile and remove padding elements in the output. 54 */ 55 template <unsigned int TileRows, unsigned int TileCols> 56 class CopyCropped 57 { 58 public: 59 static void execute( 60 size_t size, // Amount of data to copy 61 const void *inptr, 62 size_t in_row_stride, 63 size_t in_col_stride, 64 void *outptr, 65 size_t out_row_stride, 66 size_t out_col_stride, 67 unsigned int pad_top, 68 unsigned int pad_left, 69 unsigned int pad_bottom, 70 unsigned int pad_right 71 ); 72 }; 73 74 template <typename T> 75 void crop_and_copy_tile( 76 unsigned int tile_rows, 77 unsigned int tile_cols, 78 unsigned int n_channels, 79 const T *inptr, 80 unsigned int in_row_stride, 81 unsigned int in_col_stride, 82 T *outptr, 83 unsigned int out_row_stride, 84 unsigned int out_col_stride, 85 unsigned int crop_top, 86 unsigned int crop_left, 87 unsigned int crop_bottom, 88 unsigned int crop_right 89 ); 90 91 } 92