| /* |
| * Copyright (c) 2017-2021 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_CL_IM2COL_KERNEL_H |
| #define ARM_COMPUTE_CL_IM2COL_KERNEL_H |
| |
| #include "arm_compute/core/KernelDescriptors.h" |
| #include "arm_compute/core/Size2D.h" |
| #include "src/core/common/Macros.h" |
| #include "src/gpu/cl/ClCompileContext.h" |
| #include "src/gpu/cl/IClKernel.h" |
| |
| namespace arm_compute |
| { |
| namespace opencl |
| { |
| namespace kernels |
| { |
| /** Interface for the im2col reshape kernel. |
| * |
| * Rearranges image blocks into columns. It is used to strip out each convolution block to a single column. |
| * It is used to transform a convolution to a plain matrix multiplication. |
| * |
| * For example taking into account the image below and assuming 3x3 image blocks with stride of 1 we have: |
| * @f[ |
| * \left( \begin{array}{cccc} |
| * a00 & a01 & a02 & a03 \\ |
| * a10 & a11 & a12 & a13 \\ |
| * a20 & a21 & a22 & a23 \\ |
| * a30 & a31 & a32 & a33 \\ |
| * \end{array} \right) |
| * = |
| * \left( \begin{array}{ccccccccc} |
| * a00 & a01 & a02 & a10 & a11 & a12 & a20 & a21 & a22 \\ |
| * a01 & a02 & a03 & a11 & a12 & a13 & a21 & a22 & a23 \\ |
| * a10 & a11 & a12 & a20 & a21 & a22 & a30 & a31 & a32 \\ |
| * a11 & a12 & a13 & a21 & a22 & a23 & a31 & a32 & a33 \\ |
| * \end{array} \right) |
| * @f] |
| */ |
| class ClIm2ColKernel : public IClKernel |
| { |
| public: |
| /** Default constructor */ |
| ClIm2ColKernel(); |
| ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(ClIm2ColKernel); |
| /** Set the input and output of the kernel. |
| * |
| * @param[in] compile_context The compile context to be used. |
| * @param[in] src The input tensor info to convert. 3 lower dimensions represent a single input [width, height, IFM], |
| * while every optional dimension from 4 and above represent a batch of inputs. Data types supported: QASYMM8/QASYMM8_SIGNED/F16/F32 |
| * @param[out] dst The output tensor info. First 2 lower dimensions represent a transform of each 3D input, |
| * while every dimension above represents a batch. Data types supported: Same as @p input |
| * @param[in] kernel_dims The kernel dimensions (width and height). |
| * @param[in] conv_info Contains padding and stride information described in @ref PadStrideInfo. |
| * @param[in] has_bias In case biases are provided expands the matrix with 1. |
| * @param[in] dilation (Optional) Dilation, in elements, across x and y. Defaults to (1, 1). |
| * @param[in] num_groups (Optional) Number of groups when performing a grouped convolution. num_groups != 1 is only supported for NCHW data layout |
| */ |
| void configure(const ClCompileContext &compile_context, ITensorInfo *src, ITensorInfo *dst, const Size2D &kernel_dims, const PadStrideInfo &conv_info, bool has_bias, |
| const Size2D &dilation = Size2D(1U, 1U), |
| unsigned int num_groups = 1); |
| /** Static function to check if given info will lead to a valid configuration |
| * |
| * Similar to ClIm2ColKernel::configure() |
| * |
| * @return a status |
| */ |
| static Status validate(const ITensorInfo *input, const ITensorInfo *output, const Size2D &kernel_dims, const PadStrideInfo &conv_info, bool has_bias, const Size2D &dilation = Size2D(1U, 1U), |
| unsigned int num_groups = 1); |
| |
| // Inherited methods overridden: |
| void run_op(ITensorPack &tensors, const Window &window, cl::CommandQueue &queue) override; |
| |
| public: |
| DataLayout _data_layout; |
| std::pair<unsigned int, unsigned int> _convolved_dims; |
| unsigned int _num_elems_processed_per_iteration; |
| Size2D _kernel_dims; |
| PadStrideInfo _conv_info; |
| unsigned int _num_groups; |
| }; |
| } // namespace kernels |
| } // namespace opencl |
| } // namespace arm_compute |
| #endif /* ARM_COMPUTE_CL_IM2COL_KERNEL_H */ |