| /* |
| * Copyright (c) 2019 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/runtime/NEON/NEFunctions.h" |
| |
| #include "arm_compute/core/Types.h" |
| #include "utils/Utils.h" |
| |
| using namespace arm_compute; |
| using namespace utils; |
| |
| class NeonPermuteExample : public Example |
| { |
| public: |
| NeonPermuteExample() = default; |
| |
| bool do_setup(int, char **) override |
| { |
| // Initialise shapes |
| init_tensor(TensorShape(8U, 4U, 2U), tensor_nchw, DataType::U8, DataLayout::NCHW); |
| init_tensor(TensorShape(2U, 8U, 4U), tensor_nhwc, DataType::U8, DataLayout::NHWC); |
| init_tensor(TensorShape(8U, 4U, 2U), tensor_nchw_result, DataType::U8, DataLayout::NCHW); |
| |
| // Create the permutation vector to turn a NCHW tensor to NHWC. |
| // The input tensor is NCHW, which means that the fastest changing coordinate is W=8U. |
| // For permutation vectors the fastest changing coordinate is the one on the left too. |
| // Each element in the permutation vector specifies a mapping from the source tensor to the destination one, thus if we |
| // use 2U in the permutation vector's first element we are telling the function to move the channels to the fastest |
| // changing coordinate in the destination tensor. |
| |
| const PermutationVector vector_nchw_to_nhwc(2U, 0U, 1U); |
| permute_nhwc.configure(&tensor_nchw, &tensor_nhwc, vector_nchw_to_nhwc); |
| |
| // Allocate and fill tensors |
| tensor_nhwc.allocator()->allocate(); |
| tensor_nchw.allocator()->allocate(); |
| fill_tensor(tensor_nchw); |
| |
| // Demostrate autoconfigure for the output tensor |
| const PermutationVector vector_nhwc_to_nchw(1U, 2U, 0U); |
| permute_nchw.configure(&tensor_nhwc, &tensor_nchw_result, vector_nhwc_to_nchw); |
| tensor_nchw_result.allocator()->allocate(); |
| |
| return true; |
| } |
| void do_run() override |
| { |
| permute_nhwc.run(); |
| permute_nchw.run(); |
| } |
| void do_teardown() override |
| { |
| #if ARM_COMPUTE_DEBUG_ENABLED |
| std::cout << "Tensor NCHW" << std::endl; |
| tensor_nchw.print(std::cout); |
| std::cout << "Tensor NHWC" << std::endl; |
| tensor_nhwc.print(std::cout); |
| #endif // ARM_COMPUTE_DEBUG_ENABLED |
| } |
| |
| private: |
| void validate_result(const Tensor &reference, const Tensor &result) |
| { |
| Window window; |
| window.use_tensor_dimensions(reference.info()->tensor_shape()); |
| Iterator ref_it(&reference, window); |
| Iterator res_it(&result, window); |
| execute_window_loop(window, [&](const Coordinates &) |
| { |
| assert(*reinterpret_cast<unsigned char *>(ref_it.ptr()) == *reinterpret_cast<unsigned char *>(res_it.ptr())); |
| }, |
| ref_it, res_it); |
| } |
| |
| void fill_tensor(Tensor &tensor) |
| { |
| Window window; |
| window.use_tensor_dimensions(tensor.info()->tensor_shape()); |
| Iterator tensor_it(&tensor, window); |
| unsigned char val(0); |
| execute_window_loop(window, [&](const Coordinates &) |
| { |
| *reinterpret_cast<unsigned char *>(tensor_it.ptr()) = val++; |
| }, |
| tensor_it); |
| } |
| void init_tensor(const TensorShape shape, Tensor &tensor, DataType type, DataLayout layout) |
| { |
| tensor.allocator()->init(TensorInfo(shape, 1, type).set_data_layout(layout)); |
| } |
| |
| Tensor tensor_nchw{}; |
| Tensor tensor_nhwc{}; |
| Tensor tensor_nchw_result{}; |
| NEPermute permute_nhwc{}; |
| NEPermute permute_nchw{}; |
| }; |
| |
| /** Main program that instantiates a permute function example. |
| * |
| * @param[in] argc Number of arguments |
| * @param[in] argv Arguments |
| */ |
| int main(int argc, char **argv) |
| { |
| return utils::run_example<NeonPermuteExample>(argc, argv); |
| } |