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Diffstat (limited to 'src/core/NEON/kernels/NENonMaximaSuppression3x3Kernel.h')
| -rw-r--r-- | src/core/NEON/kernels/NENonMaximaSuppression3x3Kernel.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/core/NEON/kernels/NENonMaximaSuppression3x3Kernel.h b/src/core/NEON/kernels/NENonMaximaSuppression3x3Kernel.h new file mode 100644 index 0000000000..d32dfecfeb --- /dev/null +++ b/src/core/NEON/kernels/NENonMaximaSuppression3x3Kernel.h @@ -0,0 +1,108 @@ +/* + * 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_NENONMAXIMASUPPRESSION3x3KERNEL_H +#define ARM_COMPUTE_NENONMAXIMASUPPRESSION3x3KERNEL_H + +#include "src/core/NEON/INEKernel.h" + +#include <cstdint> + +namespace arm_compute +{ +class ITensor; + +/** Interface to perform Non-Maxima suppression over a 3x3 window using NEON + * + * @note Used by @ref NEFastCorners and @ref NEHarrisCorners + */ +class NENonMaximaSuppression3x3Kernel : public INEKernel +{ +public: + const char *name() const override + { + return "NENonMaximaSuppression3x3Kernel"; + } + /** Default constructor */ + NENonMaximaSuppression3x3Kernel(); + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NENonMaximaSuppression3x3Kernel(const NENonMaximaSuppression3x3Kernel &) = delete; + /** Prevent instances of this class from being copied (As this class contains pointers) */ + NENonMaximaSuppression3x3Kernel &operator=(const NENonMaximaSuppression3x3Kernel &) = delete; + /** Allow instances of this class to be moved */ + NENonMaximaSuppression3x3Kernel(NENonMaximaSuppression3x3Kernel &&) = default; + /** Allow instances of this class to be moved */ + NENonMaximaSuppression3x3Kernel &operator=(NENonMaximaSuppression3x3Kernel &&) = default; + /** Default destructor */ + ~NENonMaximaSuppression3x3Kernel() = default; + + /** Initialise the kernel's sources, destinations and border mode. + * + * @param[in] input Source tensor. Data types supported: U8/F32 + * @param[out] output Destination tensor. Data types supported: same as @p input + * @param[in] border_undefined True if the border mode is undefined. False if it's replicate or constant. + */ + void configure(const ITensor *input, ITensor *output, bool border_undefined); + + // Inherited methods overridden: + void run(const Window &window, const ThreadInfo &info) override; + BorderSize border_size() const override; + +protected: + /** Common signature for all the specialised non-maxima suppression 3x3 functions + * + * @param[in] input_ptr Pointer to the input tensor. + * @param[out] output_ptr Pointer to the output tensor + * @param[in] input_stride Stride of the input tensor + */ + using NonMaxSuppr3x3Function = void(const void *__restrict input_ptr, void *__restrict output_ptr, const uint32_t input_stride); + + NonMaxSuppr3x3Function *_func; /**< Non-Maxima suppression function to use for the particular tensor types passed to configure() */ + const ITensor *_input; /**< Source tensor */ + ITensor *_output; /**< Destination tensor */ +}; + +#ifdef __ARM_FEATURE_FP16_VECTOR_ARITHMETIC +/** NEON kernel to perform Non-Maxima suppression 3x3 with intermediate results in FP16 if the input data type is FP32 + */ +class NENonMaximaSuppression3x3FP16Kernel : public NENonMaximaSuppression3x3Kernel +{ +public: + const char *name() const override + { + return "NENonMaximaSuppression3x3FP16Kernel"; + } + /** Initialise the kernel's sources, destinations and border mode. + * + * @param[in] input Source tensor. Data types supported: U8/F32. + * @param[out] output Destination tensor. Data types supported: same as @p input + * @param[in] border_undefined True if the border mode is undefined. False if it's replicate or constant. + */ + void configure(const ITensor *input, ITensor *output, bool border_undefined); +}; +#else /* __ARM_FEATURE_FP16_VECTOR_ARITHMETIC */ +/** NEON kernel to perform Non-Maxima suppression 3x3 with intermediate results in FP16 if the input data type is FP32 */ +using NENonMaximaSuppression3x3FP16Kernel = NENonMaximaSuppression3x3Kernel; +#endif /* __ARM_FEATURE_FP16_VECTOR_ARITHMETIC */ +} // namespace arm_compute +#endif /* _ARM_COMPUTE_NENONMAXIMASUPPRESSION3x3KERNEL_H */ |