diff options
Diffstat (limited to 'src/core')
-rw-r--r-- | src/core/NEON/kernels/NEStridedSliceKernel.cpp | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/NEStridedSliceKernel.cpp b/src/core/NEON/kernels/NEStridedSliceKernel.cpp new file mode 100644 index 0000000000..bb5756de93 --- /dev/null +++ b/src/core/NEON/kernels/NEStridedSliceKernel.cpp @@ -0,0 +1,187 @@ +/* + * Copyright (c) 2018-2019 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/NEStridedSliceKernel.h" + +#include "arm_compute/core/CPP/Validate.h" +#include "arm_compute/core/IAccessWindow.h" +#include "arm_compute/core/ITensor.h" +#include "arm_compute/core/TensorInfo.h" +#include "arm_compute/core/Window.h" + +#include "arm_compute/core/Types.h" +#include "arm_compute/core/utils/helpers/bit_ops.h" +#include "arm_compute/core/utils/helpers/tensor_transform.h" +#include "arm_compute/core/utils/misc/ShapeCalculator.h" + +namespace arm_compute +{ +namespace +{ +Status validate_arguments(const ITensorInfo *input, const ITensorInfo *output, + const Coordinates &starts, const Coordinates &ends, const BiStrides &strides, + int32_t begin_mask, int32_t end_mask, int32_t shrink_axis_mask) +{ + ARM_COMPUTE_RETURN_ERROR_ON_NULLPTR(input, output); + ARM_COMPUTE_RETURN_ERROR_ON_CPU_F16_UNSUPPORTED(input); + ARM_COMPUTE_RETURN_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, + DataType::U8, DataType::S8, DataType::QASYMM8, + DataType::U16, DataType::S16, + DataType::U32, DataType::S32, + DataType::F16, DataType::F32); + + ARM_COMPUTE_RETURN_ERROR_ON(input->tensor_shape().num_dimensions() > 4); + ARM_COMPUTE_RETURN_ERROR_ON(starts.num_dimensions() > input->num_dimensions()); + ARM_COMPUTE_RETURN_ERROR_ON(ends.num_dimensions() > input->num_dimensions()); + ARM_COMPUTE_RETURN_ERROR_ON(strides.num_dimensions() > input->num_dimensions()); + ARM_COMPUTE_RETURN_ERROR_ON(std::any_of(strides.cbegin(), strides.cbegin() + strides.num_dimensions(), [](int i) + { + return i == 0; + })); + + // Get expected output shape + const TensorShape exp_output_shape = arm_compute::misc::shape_calculator::compute_strided_slice_shape(*input, + starts, ends, strides, + begin_mask, end_mask, shrink_axis_mask); + ARM_COMPUTE_RETURN_ERROR_ON(exp_output_shape.total_size() == 0); + + // Checks output if configured + if(output->total_size() != 0) + { + const TensorInfo exp_output_info = output->clone()->set_tensor_shape(exp_output_shape); + ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_SHAPES(output, &exp_output_info); + ARM_COMPUTE_RETURN_ERROR_ON_MISMATCHING_DATA_TYPES(input, output); + } + + return Status{}; +} + +std::pair<Status, Window> validate_and_configure_window(ITensorInfo *input, ITensorInfo *output, + const Coordinates &starts, const Coordinates &ends, const BiStrides &strides, + int32_t begin_mask, int32_t end_mask, int32_t shrink_axis_mask) +{ + // Output tensor auto initialization if not yet initialized + const TensorShape output_shape = arm_compute::misc::shape_calculator::compute_strided_slice_shape(*input, + starts, ends, strides, + begin_mask, end_mask, shrink_axis_mask); + auto_init_if_empty(*output, input->clone()->set_tensor_shape(output_shape)); + + // Create window + const unsigned int num_elems_processed_per_iteration = 1; + + Window win = calculate_max_window(*output, Steps(num_elems_processed_per_iteration)); + output->set_valid_region(ValidRegion(Coordinates(), output->tensor_shape())); + + return std::make_pair(Status{}, win); +} + +void strided_slice_generic(const ITensor *input, ITensor *output, + const Coordinates &starts, const BiStrides &strides, int32_t shrink_axis_mask, + const Window &window) +{ + Iterator output_it(output, window); + const size_t width_size = input->info()->element_size(); + + const bool is_shrink_w = arm_compute::helpers::bit_ops::is_bit_set(shrink_axis_mask, 0); + const bool is_shrink_h = arm_compute::helpers::bit_ops::is_bit_set(shrink_axis_mask, 1); + const bool is_shrink_c = arm_compute::helpers::bit_ops::is_bit_set(shrink_axis_mask, 2); + const bool is_shrink_n = arm_compute::helpers::bit_ops::is_bit_set(shrink_axis_mask, 3); + + unsigned int index = 0; + const int idx_w = is_shrink_w ? 0 : index++; + const int idx_h = is_shrink_h ? 0 : index++; + const int idx_c = is_shrink_c ? 0 : index++; + const int idx_n = is_shrink_n ? 0 : index; + + BiStrides shrinked_strides; + shrinked_strides.set(0, is_shrink_w ? 0 : strides[0]); + shrinked_strides.set(1, is_shrink_h ? 0 : strides[1]); + shrinked_strides.set(2, is_shrink_c ? 0 : strides[2]); + shrinked_strides.set(3, is_shrink_n ? 0 : strides[3]); + + execute_window_loop(window, [&](const Coordinates & id) + { + const int w_coord = starts[0] + (id[idx_w] * shrinked_strides[0]); + const int h_coord = starts[1] + (id[idx_h] * shrinked_strides[1]); + const int c_coord = starts[2] + (id[idx_c] * shrinked_strides[2]); + const int n_coord = starts[3] + (id[idx_n] * shrinked_strides[3]); + + Coordinates in_coords(w_coord, h_coord, c_coord, n_coord); + std::copy_n(input->ptr_to_element(in_coords), width_size, output_it.ptr()); + }, + output_it); +} +} // namespace + +NEStridedSliceKernel::NEStridedSliceKernel() + : _input(nullptr), _output(nullptr), _starts_abs(), _final_strides(), _shrink_mask() +{ +} + +void NEStridedSliceKernel::configure(const ITensor *input, ITensor *output, + const Coordinates &starts, const Coordinates &ends, const BiStrides &strides, + int32_t begin_mask, int32_t end_mask, int32_t shrink_axis_mask) +{ + ARM_COMPUTE_ERROR_ON_NULLPTR(input, output); + ARM_COMPUTE_ERROR_THROW_ON(validate_arguments(input->info(), output->info(), starts, ends, strides, begin_mask, end_mask, shrink_axis_mask)); + + _input = input; + _output = output; + _shrink_mask = shrink_axis_mask; + + const TensorShape &input_shape = input->info()->tensor_shape(); + + Coordinates ends_abs; + std::tie(_starts_abs, ends_abs, _final_strides) = arm_compute::helpers::tensor_transform::calculate_strided_slice_coords( + input_shape, + starts, ends, strides, + begin_mask, end_mask, shrink_axis_mask); + + // Configure kernel window + auto win_config = validate_and_configure_window(input->info(), output->info(), starts, ends, strides, begin_mask, end_mask, shrink_axis_mask); + ARM_COMPUTE_ERROR_THROW_ON(win_config.first); + INEKernel::configure(win_config.second); +} + +Status NEStridedSliceKernel::validate(const ITensorInfo *input, const ITensorInfo *output, + const Coordinates &starts, const Coordinates &ends, const BiStrides &strides, + int32_t begin_mask, int32_t end_mask, int32_t shrink_axis_mask) +{ + ARM_COMPUTE_RETURN_ON_ERROR(validate_arguments(input, output, starts, ends, strides, begin_mask, end_mask, shrink_axis_mask)); + ARM_COMPUTE_RETURN_ON_ERROR(validate_and_configure_window(input->clone().get(), output->clone().get(), + starts, ends, strides, begin_mask, end_mask, shrink_axis_mask) + .first); + + return Status{}; +} + +void NEStridedSliceKernel::run(const Window &window, const ThreadInfo &info) +{ + ARM_COMPUTE_UNUSED(info); + ARM_COMPUTE_ERROR_ON_UNCONFIGURED_KERNEL(this); + ARM_COMPUTE_ERROR_ON_INVALID_SUBWINDOW(INEKernel::window(), window); + + // Dispatch kernel + strided_slice_generic(_input, _output, _starts_abs, _final_strides, _shrink_mask, window); +} +} // namespace arm_compute |