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Diffstat (limited to 'src/core/NEON/kernels/NEScaleKernel.h')
| -rw-r--r-- | src/core/NEON/kernels/NEScaleKernel.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/NEScaleKernel.h b/src/core/NEON/kernels/NEScaleKernel.h new file mode 100644 index 0000000000..a3786db5b7 --- /dev/null +++ b/src/core/NEON/kernels/NEScaleKernel.h @@ -0,0 +1,127 @@ +/* + * Copyright (c) 2016-2020 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_NESCALEKERNEL_H +#define ARM_COMPUTE_NESCALEKERNEL_H + +#include "arm_compute/core/KernelDescriptors.h" +#include "src/core/NEON/INEKernel.h" + +namespace arm_compute +{ +class ITensor; + +/** NEON kernel to perform scaling on a tensor */ +class NEScaleKernel : public INEKernel +{ +public: + const char *name() const override + { + return "NEScaleKernel"; + } + /** Default constructor */ + NEScaleKernel(); + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NEScaleKernel(const NEScaleKernel &) = delete; + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NEScaleKernel &operator=(const NEScaleKernel &) = delete; + /** Allow instances of this class to be moved */ + NEScaleKernel(NEScaleKernel &&) = default; + /** Allow instances of this class to be moved */ + NEScaleKernel &operator=(NEScaleKernel &&) = default; + /** Default destructor */ + ~NEScaleKernel() = default; + + /** 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] input Source tensor. Data types supported: QASYMM8/QASYMM8_SIGNED/U8/S16/F16/F32. + * @param[in] dx Pixel's distance between the X real coordinate and the smallest X following integer. Data type supported: F32 + * @param[in] dy Pixel's distance between the Y real coordinate and the smallest Y following integer. Data type supported: F32 + * @param[in] offsets 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] output Destination tensor. 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 ITensor *input, const ITensor *dx, const ITensor *dy, const ITensor *offsets, ITensor *output, + const ScaleKernelInfo &info); + /** Static function to check if given info will lead to a valid configuration of @ref NEScaleKernel + * + * @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] input Source tensor. Data types supported: QASYMM8/QASYMM8_SIGNED/U8/S16/F16/F32. + * @param[in] dx Pixel's distance between the X real coordinate and the smallest X following integer. Data type supported: F32 + * @param[in] dy Pixel's distance between the Y real coordinate and the smallest Y following integer. Data type supported: F32 + * @param[in] offsets 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[in] output Destination tensor. 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 validation + */ + static Status validate(const ITensorInfo *input, const ITensorInfo *dx, const ITensorInfo *dy, const ITensorInfo *offsets, ITensorInfo *output, + const ScaleKernelInfo &info); + + // Inherited methods overridden: + void run(const Window &window, const ThreadInfo &info) override; + +private: + /** function to perform scale using area interpolation on the given window + * + * @note Used only in case down-sampling. + */ + void scale_area_nchw_u8(const Window &window); + + /** function to perform scale using bilinear interpolation on the given window */ + template <typename T> + void scale_bilinear_nchw(const Window &window); + /** function to perform scale using bilinear interpolation on the given window */ + template <typename T> + void scale_bilinear_nhwc(const Window &window); + /** function to perform scale using bilinear interpolation on the given window */ + template <typename T> + void scale_bilinear_qasymm(const Window &window); + + /** function to perform scale using nearest neighbour on the given window */ + template <typename T> + void scale_nearest_nchw(const Window &window); + /** function to perform scale using nearest neighbour on the given window */ + template <typename T> + void scale_nearest_nhwc(const Window &window); + + /** Scale function to use for the particular function to use */ + using ScaleFunctionPtr = void (NEScaleKernel::*)(const Window &window); + + ScaleFunctionPtr _func; + const ITensor *_offsets; + const ITensor *_dx; + const ITensor *_dy; + const ITensor *_input; + ITensor *_output; + InterpolationPolicy _policy; + BorderMode _border_mode; + PixelValue _constant_border_value; + float _sampling_offset; + bool _align_corners; +}; +} // namespace arm_compute +#endif /*ARM_COMPUTE_NESCALEKERNEL_H */ |