| /* |
| * Copyright (c) 2023 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 "src/core/NEON/kernels/arm_gemm/utils.hpp" |
| #include "depthwise_common.hpp" |
| |
| using arm_gemm::iceildiv; |
| |
| namespace arm_conv { |
| namespace depthwise { |
| |
| std::tuple<size_t, size_t, size_t, size_t, size_t> |
| get_reduced_view_for_dilation(size_t out_size, size_t in_size, const size_t d, |
| const size_t dilation_factor, |
| const size_t kernel_size, const size_t stride, |
| const size_t orig_pad_before) { |
| // Get the valid output range |
| out_size = iceildiv(out_size - d, dilation_factor); |
| |
| // Compute the start offset and the amount of padding which applies to this |
| // portion of the work. |
| size_t start_pos = d * stride, pad_before = 0; |
| if (start_pos < orig_pad_before) { |
| pad_before = iceildiv(orig_pad_before - start_pos, dilation_factor); |
| } |
| start_pos += pad_before * dilation_factor - orig_pad_before; |
| |
| // Hence compute the valid input range |
| in_size = start_pos < in_size |
| ? iceildiv(in_size - start_pos, dilation_factor) |
| : 0; |
| |
| // Finally, compute the "after" padding |
| const size_t reqd_input = (out_size - 1) * stride + kernel_size; |
| size_t pad_after = 0; |
| if (reqd_input > (pad_before + in_size)) { |
| pad_after = reqd_input - (pad_before + in_size); |
| } |
| |
| return std::make_tuple(out_size, in_size, start_pos, pad_before, pad_after); |
| } |
| |
| } // namespace depthwise |
| } // namespace arm_conv |