| /* |
| * Copyright (c) 2017-2020 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_NEDECONVOLUTIONLAYER_H |
| #define ARM_COMPUTE_NEDECONVOLUTIONLAYER_H |
| |
| #include "arm_compute/runtime/CPP/functions/CPPUpsample.h" |
| #include "arm_compute/runtime/NEON/functions/NEConvolutionLayer.h" |
| #include "arm_compute/runtime/NEON/functions/NEDirectConvolutionLayer.h" |
| #include "arm_compute/runtime/NEON/functions/NEReverse.h" |
| |
| #include "arm_compute/core/Types.h" |
| #include "arm_compute/runtime/IFunction.h" |
| #include "arm_compute/runtime/IMemoryManager.h" |
| #include "arm_compute/runtime/MemoryGroup.h" |
| #include "arm_compute/runtime/Tensor.h" |
| |
| #include <memory> |
| |
| namespace arm_compute |
| { |
| /** Function to run the deconvolution layer. |
| * |
| * Deconvolution Layer is the backward pass of Convolution Layer. First we transform the input depending on the stride and pad info and then perfrom a 1x1 |
| * convolution pass. Input stride defines how many zeroes we should put between each element of the input, pad is the amount of padding and finaly a is a user |
| * specified value where a < stride - 1 that increases the padding top and right of the input image. |
| * |
| * The relation between input to output is as follows: |
| * \f[ |
| * width\_output = (width\_input - 1) \cdot stride\_x - 2 \cdot padding\_x + kernel\_x |
| * \f] |
| * \f[ |
| * height\_output = (height\_input - 1) \cdot stride\_y - 2 \cdot padding\_y + kernel\_y |
| * \f] |
| * |
| * where |
| * width is the size of the first input dimension. |
| * height is the size of the second input dimension. |
| * width_output is the size of the first output dimension. |
| * height_output is the size of the second output dimension. |
| * kernel_x and kernel_y are the convolution sizes in x and y. |
| * stride_x and stride_y is the input stride of the first and second dimension. |
| * |
| * The weights used by Deconvolution are supposed to be the same as the ones used for Convolution. Therefore, it will be necessary to use the weights in the |
| * reverse order to perform an actual convolution. This is achieved by using @ref NEReverse. |
| * |
| * This function calls the following NEON kernels/functions: |
| * |
| * -# @ref CPPUpsample |
| * -# @ref NEConvolutionLayer |
| * -# @ref NEPermute |
| * -# @ref NEReverse |
| * |
| */ |
| class NEDeconvolutionLayer : public IFunction |
| { |
| public: |
| /** Constructor */ |
| NEDeconvolutionLayer(std::shared_ptr<IMemoryManager> memory_manager = nullptr); |
| |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NEDeconvolutionLayer(const NEDeconvolutionLayer &) = delete; |
| /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| NEDeconvolutionLayer &operator=(const NEDeconvolutionLayer &) = delete; |
| /** Allow instances of this class to be moved */ |
| NEDeconvolutionLayer(NEDeconvolutionLayer &&) = default; |
| /** Allow instances of this class to be moved */ |
| NEDeconvolutionLayer &operator=(NEDeconvolutionLayer &&) = default; |
| /** Default destructor */ |
| virtual ~NEDeconvolutionLayer() = default; |
| |
| /** Set the input, weights, biases and output tensors. |
| * |
| * @param[in,out] input Input tensor. 3 lower dimensions represent a single input, and an optional 4th dimension for batch of inputs. Data types supported: F32/F16/QASYMM8/QASYMM8_SIGNED. |
| * @param[in] weights The 4d weights with dimensions [width, height, IFM, OFM]. Data type supported: Same as @p input. |
| * @param[in] bias Optional, ignored if NULL. The biases have one dimension. Data type supported: Data types supported: S32 for QASYMM8 and QASYMM8_SIGNED input, F32 for F32 input, F16 for F16 input. |
| * @param[out] output Output tensor. The output has the same number of dimensions as the @p input. |
| * @param[in] info Contains padding and policies to be used in the deconvolution, this is decribed in @ref PadStrideInfo. |
| * |
| */ |
| void configure(ITensor *input, const ITensor *weights, const ITensor *bias, ITensor *output, const PadStrideInfo &info); |
| /** Static function to check if given info will lead to a valid configuration of @ref NEDeconvolutionLayer |
| * |
| * @param[in] input Input tensor info. 3 lower dimensions represent a single input, and an optional 4th dimension for batch of inputs. Data types supported: F32/F16/QASYMM8/QASYMM8_SIGNED. |
| * @param[in] weights The 4d weights info with dimensions [width, height, IFM, OFM]. Data type supported: Same as @p input. |
| * @param[in] bias (Optional) The biases have one dimension. Data type supported: Data types supported: S32 for QASYMM8 and QASYMM8_SIGNED input, F32 for F32 input, F16 for F16 input. |
| * @param[in] output Output tensor info. The output has the same number of dimensions as the @p input. |
| * @param[in] info Contains padding and policies to be used in the deconvolution, this is decribed in @ref PadStrideInfo. |
| * |
| * @return a status |
| */ |
| static Status validate(const ITensorInfo *input, const ITensorInfo *weights, const ITensorInfo *bias, const ITensorInfo *output, const PadStrideInfo &info); |
| |
| // Inherited methods overridden: |
| void run() override; |
| void prepare() override; |
| |
| private: |
| MemoryGroup _memory_group; |
| NEConvolutionLayer _conv_f; |
| CPPUpsample _upsample_f; |
| NEReverse _flip_weights; |
| NEPermute _permute_input; |
| NEPermute _permute_weights; |
| NEPermute _permute_output; |
| Tensor _scaled_output; |
| Tensor _weights_flipped; |
| Tensor _permuted_input; |
| Tensor _permuted_weights; |
| Tensor _permuted_output; |
| Tensor _flip_axis; |
| bool _is_nchw; |
| const ITensor *_original_weights; |
| ITensor *_input; |
| PadStrideInfo _info; |
| bool _is_prepared; |
| }; |
| } // arm_compute |
| #endif /* ARM_COMPUTE_NEDECONVOLUTIONLAYER_H */ |