| /* |
| * Copyright (c) 2016-2021 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_CPU_SCALEKERNEL_H |
| #define ARM_COMPUTE_CPU_SCALEKERNEL_H |
| |
| #include "arm_compute/core/KernelDescriptors.h" |
| #include "src/core/common/Macros.h" |
| #include "src/core/cpu/ICpuKernel.h" |
| |
| namespace arm_compute |
| { |
| namespace cpu |
| { |
| namespace kernels |
| { |
| /** Arm(R) Neon(TM) kernel to perform scaling on a tensor */ |
| class CpuScaleKernel : public ICpuKernel |
| { |
| public: |
| CpuScaleKernel() = default; |
| ARM_COMPUTE_DISALLOW_COPY_ALLOW_MOVE(CpuScaleKernel); |
| /** Initialise the kernel's inputs, output and interpolation policy |
| * |
| * @note dx, dy and offsets have the same dimensions (width and height) of the output tensor |
| * @note Using @p policy Area only supports data layout NCHW and input data type U8. |
| * |
| * @param[in] src Source tensor info. Data types supported: QASYMM8/QASYMM8_SIGNED/U8/S16/F16/F32. |
| * @param[in] dx Distance x tensor info. Pixel's distance between the X real coordinate and the smallest X following integer. Data type supported: F32 |
| * @param[in] dy Distance y tensor info. Pixel's distance between the Y real coordinate and the smallest Y following integer. Data type supported: F32 |
| * @param[in] offsets Offset tensor info. Offset to access the pixel with NEAREST interpolation or the top-left pixel with BILINEAR interpolation in the input tensor. Data type supported: S32. |
| * @param[out] dst Destination tensor info. Data types supported: Same as @p input. All but the lowest two dimensions must be the same size as in the input tensor, i.e. scaling is only performed within the XY-plane. |
| * @param[in] info @ref ScaleKernelInfo to use for configuration |
| */ |
| void configure(const ITensorInfo *src, const ITensorInfo *dx, const ITensorInfo *dy, const ITensorInfo *offsets, ITensorInfo *dst, |
| const ScaleKernelInfo &info); |
| /** Static function to check if given info will lead to a valid configuration |
| * |
| * Similar to CpuScaleKernel::configure() |
| * |
| * @return a status |
| */ |
| static Status validate(const ITensorInfo *src, const ITensorInfo *dx, const ITensorInfo *dy, const ITensorInfo *offsets, ITensorInfo *dst, |
| const ScaleKernelInfo &info); |
| |
| // Inherited methods overridden: |
| void run_op(ITensorPack &tensors, const Window &window, const ThreadInfo &info) override; |
| const char *name() const override; |
| |
| private: |
| #ifdef ENABLE_NCHW_KERNELS |
| /** function to perform scale using area interpolation on the given window |
| * |
| * @note Used only in case down-sampling. |
| */ |
| void scale_area_nchw_u8(const ITensor *src, ITensor *dst, const ITensor *dx, const ITensor *dy, const ITensor *offsets, const Window &window); |
| |
| /** function to perform scale using bilinear interpolation on the given window */ |
| template <typename T> |
| void scale_bilinear_nchw(const ITensor *src, ITensor *dst, const ITensor *dx, const ITensor *dy, const ITensor *offsets, const Window &window); |
| /** function to perform scale using bilinear interpolation on the given window */ |
| template <typename T> |
| void scale_bilinear_qasymm(const ITensor *src, ITensor *dst, const ITensor *dx, const ITensor *dy, const ITensor *offsets, const Window &window); |
| |
| /** function to perform scale using nearest neighbour on the given window */ |
| template <typename T> |
| void scale_nearest_nchw(const ITensor *src, ITensor *dst, const ITensor *dx, const ITensor *dy, const ITensor *offsets, const Window &window); |
| #endif // ENABLE_NCHW_KERNELS |
| |
| /** Scale function to use for the particular function to use */ |
| using ScaleFunctionPtr = void (CpuScaleKernel::*)(const ITensor *, ITensor *, const ITensor *, const ITensor *, const ITensor *, const Window &window); |
| using ScaleKernelPtr = std::add_pointer<void(const ITensor *, ITensor *, const ITensor *, const ITensor *, const ITensor *, |
| InterpolationPolicy, BorderMode, PixelValue, float, bool, const Window &)>::type; |
| |
| ScaleFunctionPtr _func{ nullptr }; |
| InterpolationPolicy _policy{}; |
| BorderMode _border_mode{}; |
| PixelValue _constant_border_value{}; |
| float _sampling_offset{ 0 }; |
| bool _align_corners{ false }; |
| DataLayout _data_layout{ DataLayout::UNKNOWN }; |
| ScaleKernelPtr _run_method{ nullptr }; |
| std::string _name{}; |
| }; |
| } // namespace kernels |
| } // namespace cpu |
| } // namespace arm_compute |
| #endif /* ARM_COMPUTE_CPU_SCALEKERNEL_H */ |