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Diffstat (limited to 'runtimes/libs/ARMComputeEx/arm_compute/core/utils/misc/ShapeCalculatorEx.h')
-rw-r--r-- | runtimes/libs/ARMComputeEx/arm_compute/core/utils/misc/ShapeCalculatorEx.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/runtimes/libs/ARMComputeEx/arm_compute/core/utils/misc/ShapeCalculatorEx.h b/runtimes/libs/ARMComputeEx/arm_compute/core/utils/misc/ShapeCalculatorEx.h new file mode 100644 index 000000000..bacb1140c --- /dev/null +++ b/runtimes/libs/ARMComputeEx/arm_compute/core/utils/misc/ShapeCalculatorEx.h @@ -0,0 +1,129 @@ +/* + * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved + * Copyright (c) 2016-2018 ARM Limited. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __ARM_COMPUTE_MISC_SHAPE_CALCULATOR_EX_H__ +#define __ARM_COMPUTE_MISC_SHAPE_CALCULATOR_EX_H__ + +#include "arm_compute/core/Helpers.h" +#include "arm_compute/core/ITensorInfo.h" +#include "arm_compute/core/Utils.h" + +#include "arm_compute/core/utils/helpers/tensor_transform.h" + +#include <cmath> + +namespace arm_compute +{ +namespace misc +{ +namespace shape_calculator +{ + +/** Calculate the upsampled output shape used for transpose convolution + * + * @param[in] input Input tensor info + * @param[in] weights Weights tensor shape + * @param[in] info Padding and stride info + * @param[in] out_dims Output shape dimensions + * @param[in] invalid_right The number of zeros added to right edge of the output. + * @param[in] invalid_bottom The number of zeros added to bottom edge of the output. + * @param[out] pad_left Padding on left + * @param[out] pad_right Padding on right + * @param[out] pad_top Padding on top + * @param[out] pad_bottom Padding on bottom + * + * @return the calculated shape + */ +inline TensorShape compute_transposeconv_upsampled_shape( + const ITensorInfo &input, const ITensorInfo &weights, const PadStrideInfo &info, + std::pair<unsigned int, unsigned int> &out_dims, unsigned int invalid_right, + unsigned int invalid_bottom, unsigned int &pad_left, unsigned int &pad_right, + unsigned int &pad_top, unsigned int &pad_bottom) +{ + unsigned int sx = info.stride().first; + unsigned int sy = info.stride().second; + const DataLayout data_layout = input.data_layout(); + const size_t idx_w = get_data_layout_dimension_index(data_layout, DataLayoutDimension::WIDTH); + const size_t idx_h = get_data_layout_dimension_index(data_layout, DataLayoutDimension::HEIGHT); + + // Find the upsampled dimensions + // transpose conv out: + // tconv_out + pad = 1 + (in - 1) * stride + invalid + // tconv_out = 1 + (in - 1) * stride + invalid - pad + // upsample out: + // upsample_out = 1 + (in - 1) * stride + unsigned int out_x = (input.dimension(idx_w) - 1) * sx + 1; + unsigned int out_y = (input.dimension(idx_h) - 1) * sy + 1; + + // Find the padding needed for the convolution with stride 1 in order to match output shape + // upsample+pad out: + // upsample_out + pad = tconv_out + kernel - 1 + // pad = tconv_out + kernel - 1 - upsample_out + unsigned int padx = out_dims.first - (out_x - weights.dimension(idx_w) + 1); + unsigned int pady = out_dims.second - (out_y - weights.dimension(idx_h) + 1); + out_x += padx; + out_y += pady; + + unsigned int padx_all_except_invallid = padx + info.pad_left() + info.pad_right() - invalid_right; + unsigned int pady_all_except_invallid = + pady + info.pad_top() + info.pad_bottom() - invalid_bottom; + pad_left = (padx_all_except_invallid + 1) / 2 - info.pad_left(); + pad_right = pady_all_except_invallid / 2 - info.pad_right() + invalid_right; + pad_top = (padx_all_except_invallid + 1) / 2 - info.pad_top(); + pad_bottom = pady_all_except_invallid / 2 - info.pad_bottom() + invalid_bottom; + + TensorShape scale_out_shape(input.tensor_shape()); + scale_out_shape.set(idx_w, out_x); + scale_out_shape.set(idx_h, out_y); + + return scale_out_shape; +} + +/** Calculate the output shape of the transpose convolution layer + * + * @param[in] out_dims Output x and y shape dimensions + * @param[in] input Input tensor info + * @param[in] weights Weights tensor shape + * + * @return the calculated shape + */ +inline TensorShape +compute_transposeconv_output_shape(const std::pair<unsigned int, unsigned int> &out_dims, + const ITensorInfo &input, const ITensorInfo &weights) +{ + const TensorShape input_shape{input.tensor_shape()}; + const TensorShape weights_shape{weights.tensor_shape()}; + + const DataLayout data_layout = input.data_layout(); + const int width_idx = get_data_layout_dimension_index(data_layout, DataLayoutDimension::WIDTH); + const int height_idx = get_data_layout_dimension_index(data_layout, DataLayoutDimension::HEIGHT); + const int channel_idx = + get_data_layout_dimension_index(data_layout, DataLayoutDimension::CHANNEL); + const int batch_idx = get_data_layout_dimension_index(data_layout, DataLayoutDimension::BATCHES); + + TensorShape out_shape{input_shape}; + out_shape.set(width_idx, out_dims.first); + out_shape.set(height_idx, out_dims.second); + out_shape.set(channel_idx, weights_shape[batch_idx]); + return out_shape; +} + +} // namespace shape_calculator +} // namespace misc +} // namespace arm_compute + +#endif // __ARM_COMPUTE_MISC_SHAPE_CALCULATOR_EX_H__ |