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/*
* 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/core/NEON/kernels/NEFFTDigitReverseKernel.h"
#include "arm_compute/core/ITensor.h"
#include "arm_compute/core/TensorInfo.h"
#include "arm_compute/core/Types.h"
#include "arm_compute/core/Validate.h"
#include "arm_compute/core/Window.h"
namespace arm_compute
{
namespace
{
Status validate_arguments(const ITensorInfo *input, const ITensorInfo *output, const ITensorInfo *idx, unsigned int axis)
{
ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 2, DataType::F32);
ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(idx, 1, DataType::U32);
ARM_COMPUTE_RETURN_ERROR_ON(axis > 1);
// Checks performed when output is configured
if((output != nullptr) && (output->total_size() != 0))
{
ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(input, output);
ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, output);
}
return Status{};
}
std::pair<Status, Window> validate_and_configure_window(ITensorInfo *input, ITensorInfo *output, ITensorInfo *idx, unsigned int axis)
{
ARM_COMPUTE_UNUSED(idx, axis);
auto_init_if_empty(*output, *input);
Window win = calculate_max_window(*output, Steps());
output->set_valid_region(ValidRegion(Coordinates(), output->tensor_shape()));
return std::make_pair(Status{}, win);
}
} // namespace
NEFFTDigitReverseKernel::NEFFTDigitReverseKernel()
: _input(nullptr), _output(nullptr), _idx(nullptr), _axis(0)
{
}
void NEFFTDigitReverseKernel::configure(const ITensor *input, ITensor *output, const ITensor *idx, unsigned int axis)
{
ARM_COMPUTE_ERROR_ON_NULLPTR(input, output, idx);
ARM_COMPUTE_ERROR_THROW_ON(validate_arguments(input->info(), output->info(), idx->info(), axis));
_input = input;
_output = output;
_idx = idx;
_axis = axis;
// Configure kernel window
auto win_config = validate_and_configure_window(input->info(), output->info(), idx->info(), axis);
ARM_COMPUTE_ERROR_THROW_ON(win_config.first);
INEKernel::configure(win_config.second);
}
Status NEFFTDigitReverseKernel::validate(const ITensorInfo *input, const ITensorInfo *output, const ITensorInfo *idx, unsigned int axis)
{
ARM_COMPUTE_RETURN_ON_ERROR(validate_arguments(input, output, idx, axis));
ARM_COMPUTE_RETURN_ON_ERROR(validate_and_configure_window(input->clone().get(), output->clone().get(), idx->clone().get(), axis).first);
return Status{};
}
void NEFFTDigitReverseKernel::run(const Window &window, const ThreadInfo &info)
{
ARM_COMPUTE_UNUSED(info);
Iterator out(_output, window);
const size_t element_size = _input->info()->element_size();
// Pointers to the buffers
const size_t offset = _input->info()->offset_first_element_in_bytes();
auto *idx_ptr = reinterpret_cast<unsigned int *>(_idx->buffer());
uint8_t *input_ptr = offset + _input->buffer();
// Strides
const size_t stride_x = _input->info()->strides_in_bytes()[0];
const size_t stride_y = _input->info()->strides_in_bytes()[1];
const size_t stride_z = _input->info()->strides_in_bytes()[2];
const size_t stride_w = _input->info()->strides_in_bytes()[3];
execute_window_loop(window, [&](const Coordinates & id)
{
unsigned int in_index_1d = idx_ptr[id[_axis]];
auto reverse_id = id;
reverse_id.set(_axis, in_index_1d);
memcpy(out.ptr(), input_ptr + reverse_id.x() * stride_x + reverse_id.y() * stride_y + reverse_id.z() * stride_z + reverse_id[3] * stride_w, element_size);
},
out);
ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this);
ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window);
}
} // namespace arm_compute
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