| /* |
| * Copyright (c) 2016, 2017 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/NEON/kernels/NETableLookupKernel.h" |
| |
| #include "arm_compute/core/Error.h" |
| #include "arm_compute/core/Helpers.h" |
| #include "arm_compute/core/ILut.h" |
| #include "arm_compute/core/ITensor.h" |
| #include "arm_compute/core/TensorInfo.h" |
| #include "arm_compute/core/Utils.h" |
| #include "arm_compute/core/Validate.h" |
| |
| #include <cstddef> |
| #include <cstdint> |
| |
| using namespace arm_compute; |
| |
| namespace arm_compute |
| { |
| class Coordinates; |
| |
| constexpr unsigned int num_num_elems_processed_per_iteration = 16; |
| } // namespace arm_compute |
| |
| NETableLookupKernel::NETableLookupKernel() |
| : _func(nullptr), _lut(nullptr) |
| { |
| } |
| |
| template <class T> |
| void NETableLookupKernel::tableLookup(const Window &window) |
| { |
| uint32_t offset = _lut->index_offset(); |
| size_t count = _lut->num_elements(); |
| const auto lut = reinterpret_cast<const T *>(_lut->buffer()); |
| unsigned int step = num_num_elems_processed_per_iteration; |
| |
| ARM_COMPUTE_ERROR_ON(lut == nullptr); |
| |
| Iterator input = Iterator(_input, window); |
| Iterator output = Iterator(_output, window); |
| |
| execute_window_loop(window, [&](const Coordinates & id) |
| { |
| auto input_ptr = reinterpret_cast<const T *>(input.ptr()); |
| auto output_ptr = reinterpret_cast<T *>(output.ptr()); |
| |
| for(unsigned int i = 0; i < step; ++i, ++input_ptr, ++output_ptr) |
| { |
| const int32_t index = offset + *input_ptr; |
| |
| if(0 <= index && index < static_cast<int32_t>(count)) |
| { |
| *output_ptr = lut[index]; |
| } |
| } |
| }, |
| input, output); |
| } |
| |
| namespace arm_compute |
| { |
| template <> |
| void NETableLookupKernel::tableLookup<uint8_t>(const Window &window) |
| { |
| const uint8_t *const lut = _lut->buffer(); |
| unsigned int step = num_num_elems_processed_per_iteration; |
| |
| ARM_COMPUTE_ERROR_ON(lut == nullptr); |
| |
| Iterator input = Iterator(_input, window); |
| Iterator output = Iterator(_output, window); |
| |
| execute_window_loop(window, [&](const Coordinates & id) |
| { |
| const uint8_t *input_ptr = input.ptr(); |
| uint8_t *output_ptr = output.ptr(); |
| |
| for(unsigned int i = 0; i < step; ++i) |
| { |
| *output_ptr++ = lut[*input_ptr++]; |
| } |
| }, |
| input, output); |
| } |
| } // namespace arm_compute |
| |
| void NETableLookupKernel::configure(const ITensor *input, const ILut *lut, ITensor *output) |
| { |
| ARM_COMPUTE_ERROR_ON(input == nullptr); |
| ARM_COMPUTE_ERROR_ON(lut == nullptr); |
| ARM_COMPUTE_ERROR_ON(output == nullptr); |
| ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8, DataType::S16); |
| ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(output, 1, DataType::U8, DataType::S16); |
| ARM_COMPUTE_ERROR_ON_MISMATCHING_DATA_TYPES(input, output); |
| |
| _lut = lut; |
| |
| if(input->info()->data_type() == DataType::U8 && output->info()->data_type() == DataType::U8) |
| { |
| _func = &NETableLookupKernel::tableLookup<uint8_t>; |
| } |
| else if(input->info()->data_type() == DataType::S16 && output->info()->data_type() == DataType::S16) |
| { |
| _func = &NETableLookupKernel::tableLookup<int16_t>; |
| } |
| else |
| { |
| ARM_COMPUTE_ERROR("Unsupported combination of input and output DataType."); |
| } |
| |
| INESimpleKernel::configure(input, output, num_num_elems_processed_per_iteration); |
| } |
| |
| void NETableLookupKernel::run(const Window &window, const ThreadInfo &info) |
| { |
| ARM_COMPUTE_UNUSED(info); |
| ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); |
| ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INESimpleKernel::window(), window); |
| ARM_COMPUTE_ERROR_ON(_func == nullptr); |
| (this->*_func)(window); |
| } |