| /* |
| * 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. |
| */ |
| #ifndef ARM_COMPUTE_TEST_FFT_H |
| #define ARM_COMPUTE_TEST_FFT_H |
| |
| #include "tests/SimpleTensor.h" |
| #include "tests/validation/Helpers.h" |
| |
| namespace arm_compute |
| { |
| namespace test |
| { |
| namespace validation |
| { |
| namespace reference |
| { |
| enum class FFTDirection |
| { |
| Forward, |
| Inverse |
| }; |
| |
| /** Performs an one dimensional DFT on a real input. |
| * |
| * @param[in] src Source tensor. |
| * |
| * @return Complex output of length n/2 + 1 due to symmetry. |
| */ |
| template <typename T> |
| SimpleTensor<T> rdft_1d(const SimpleTensor<T> &src); |
| |
| /** Performs an one dimensional inverse DFT on a real input. |
| * |
| * @param[in] src Source tensor. |
| * @param[in] is_odd (Optional) Specifies if the output has odd dimensions. |
| * Is used by the inverse variant to reconstruct odd sequences. |
| * |
| * @return Complex output of length n/2 + 1 due to symmetry. |
| */ |
| template <typename T> |
| SimpleTensor<T> ridft_1d(const SimpleTensor<T> &src, bool is_odd = false); |
| |
| /** Performs an one dimensional DFT on a complex input. |
| * |
| * @param[in] src Source tensor. |
| * @param[in] direction Direction of the DFT. |
| * |
| * @return Complex output of same length as input. |
| */ |
| template <typename T> |
| SimpleTensor<T> dft_1d(const SimpleTensor<T> &src, FFTDirection direction); |
| |
| /** Performs a two dimensional DFT on a real input. |
| * |
| * @param[in] src Source tensor. |
| * |
| * @return Complex output of length n/2 + 1 across width due to symmetry and height of same size as the input. |
| */ |
| template <typename T> |
| SimpleTensor<T> rdft_2d(const SimpleTensor<T> &src); |
| |
| /** Performs a two dimensional inverse DFT on a real input. |
| * |
| * @param[in] src Source tensor. |
| * @param[in] is_odd (Optional) Specifies if the output has odd dimensions across width. |
| * Is used by the inverse variant to reconstruct odd sequences. |
| * |
| * @return Complex output of length n/2 + 1 across width due to symmetry and height of same size as the input. |
| */ |
| template <typename T> |
| SimpleTensor<T> ridft_2d(const SimpleTensor<T> &src, bool is_odd = false); |
| |
| /** Performs a two dimensional DFT on a complex input. |
| * |
| * @param[in] src Source tensor. |
| * @param[in] direction Direction of the DFT. |
| * |
| * @return Complex output of same length as input. |
| */ |
| template <typename T> |
| SimpleTensor<T> dft_2d(const SimpleTensor<T> &src, FFTDirection direction); |
| |
| /** Performs and DFT based convolution on a real input. |
| * |
| * @param[in] src Source tensor. |
| * @param[in] w Weights tensor. |
| * @param[in] conv_info Convolution related metadata. |
| * |
| * @return The output tensor. |
| */ |
| template <typename T> |
| SimpleTensor<T> conv2d_dft(const SimpleTensor<T> &src, const SimpleTensor<T> &w, const PadStrideInfo &conv_info); |
| } // namespace reference |
| } // namespace validation |
| } // namespace test |
| } // namespace arm_compute |
| #endif /* ARM_COMPUTE_TEST_FFT_H */ |