| /* |
| * 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 "arm_compute/core/Error.h" |
| |
| #include <cstdint> |
| #include <cstring> |
| |
| namespace arm_compute |
| { |
| namespace cpu |
| { |
| |
| void depth_to_space_nhwc_any( // |
| const uint8_t *src, |
| uint8_t *dst, |
| const uintptr_t src_shape[4], |
| const uintptr_t src_strides[4], |
| const uintptr_t dst_strides[4], |
| uintptr_t element_size, |
| uintptr_t block_size) |
| { |
| ARM_COMPUTE_ERROR_ON(src_strides[0] != element_size); |
| ARM_COMPUTE_ERROR_ON(dst_strides[0] != element_size); |
| |
| const auto src_block_row_stride = (src_shape[0] / block_size) * element_size; |
| const auto dst_width_block_stride = block_size * dst_strides[1]; |
| |
| auto *src_batch_ptr = src; |
| auto *dst_batch_ptr = dst; |
| |
| for (uintptr_t batch = 0; batch < src_shape[3]; ++batch) |
| { |
| auto *src_height_block_ptr = src_batch_ptr; |
| auto *dst_row_ptr = dst_batch_ptr; |
| |
| for (uintptr_t height_block = 0; height_block < src_shape[2]; ++height_block) |
| { |
| auto *src_block_row_ptr = src_height_block_ptr; |
| |
| for (uintptr_t block_row = 0; block_row < block_size; ++block_row) |
| { |
| auto *src_width_block_ptr = src_block_row_ptr; |
| auto *dst_width_block_ptr = dst_row_ptr; |
| |
| for (uintptr_t width_block = 0; width_block < src_shape[1]; ++width_block) |
| { |
| // The source pointer is accumulated as: |
| // |
| // src_width_block_ptr = |
| // src + |
| // batch * src_strides[3] + |
| // height_block * src_strides[2] + |
| // width_block * src_strides[1] + |
| // block_row * (src_shape[0] / block_size) * element_size; |
| // |
| // The destination pointer is accumulated as: |
| // |
| // dst_width_block_ptr = |
| // dst + |
| // batch * dst_strides[3] + |
| // (height_block * block_size + block_row) * dst_strides[2] + |
| // width_block * block_size * dst_strides[1]; |
| |
| std::memcpy(dst_width_block_ptr, src_width_block_ptr, src_block_row_stride); |
| |
| src_width_block_ptr += src_strides[1]; |
| dst_width_block_ptr += dst_width_block_stride; |
| } |
| |
| src_block_row_ptr += src_block_row_stride; |
| dst_row_ptr += dst_strides[2]; |
| } |
| |
| src_height_block_ptr += src_strides[2]; |
| } |
| |
| src_batch_ptr += src_strides[3]; |
| dst_batch_ptr += dst_strides[3]; |
| } |
| } |
| |
| } // namespace cpu |
| } // namespace arm_compute |