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Diffstat (limited to 'arm_compute/core/NEON/kernels/NEHistogramKernel.h')
| -rw-r--r-- | arm_compute/core/NEON/kernels/NEHistogramKernel.h | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/arm_compute/core/NEON/kernels/NEHistogramKernel.h b/arm_compute/core/NEON/kernels/NEHistogramKernel.h deleted file mode 100644 index b1dd105676..0000000000 --- a/arm_compute/core/NEON/kernels/NEHistogramKernel.h +++ /dev/null @@ -1,135 +0,0 @@ -/* - * 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_NEHISTOGRAMKERNEL_H -#define ARM_COMPUTE_NEHISTOGRAMKERNEL_H - -#include "arm_compute/core/NEON/INEKernel.h" -#include "support/Mutex.h" - -#include <cstddef> -#include <cstdint> - -namespace arm_compute -{ -class IDistribution1D; -class ITensor; -using IImage = ITensor; - -/** Interface for the histogram kernel */ -class NEHistogramKernel : public INEKernel -{ -public: - const char *name() const override - { - return "NEHistogramKernel"; - } - /** Default constructor */ - NEHistogramKernel(); - /** Default destructor */ - ~NEHistogramKernel() = default; - /** Prevent instances of this class from being copied (As this class contains pointers) */ - NEHistogramKernel(const NEHistogramKernel &) = delete; - /** Prevent instances of this class from being copied (As this class contains pointers) */ - NEHistogramKernel &operator=(const NEHistogramKernel &) = delete; - /** Prevent instances of this class from being moved (As this class contains non movable objects) */ - NEHistogramKernel(NEHistogramKernel &&) = delete; - /** Prevent instances of this class from being moved (As this class contains non movable objects) */ - NEHistogramKernel &operator=(NEHistogramKernel &&) = delete; - - /** Set the input image and the distribution output. - * - * @param[in] input Source image. Data type supported: U8. - * @param[out] output Destination distribution. - * @param[in,out] local_hist Array that the threads use to save their local histograms. - * It's size should be equal to (number_of_threads * num_bins), - * and the Window::thread_id() is used to determine the part of the array - * used by each thread. - * @param[out] window_lut LUT with pre-calculated possible window values. - * The size of the LUT should be equal to max_range_size and it will be filled - * during the configure stage, while it re-used in every run, therefore can be - * safely shared among threads. - */ - void configure(const IImage *input, IDistribution1D *output, uint32_t *local_hist, uint32_t *window_lut); - /** Set the input image and the distribution output. - * - * @note Used for histogram of fixed size equal to 256 - * - * @param[in] input Source image. Data type supported: U8. - * @param[out] output Destination distribution which must be of 256 bins.. - */ - void configure(const IImage *input, IDistribution1D *output); - - // Inherited methods overridden: - void run(const Window &window, const ThreadInfo &info) override; - -private: - /** Function to merge multiple partial histograms. - * - * @param[out] global_hist Pointer to the final histogram. - * @param[in] local_hist Pointer to the partial histograms. - * @param[in] bins Number of bins. - */ - void merge_histogram(uint32_t *global_hist, const uint32_t *local_hist, size_t bins); - /** Function to merge multiple minimum values of partial histograms. - * - * @param[out] global_min Pointer to the global min value. - * @param[in] local_min Local min value. - */ - void merge_min(uint8_t *global_min, const uint8_t &local_min); - /** Function to perform histogram on the given window - * - * @param[in] win Region on which to execute the kernel - * @param[in] info Info about the executing thread - */ - void histogram_U8(Window win, const ThreadInfo &info); - /** Function to perform histogram on the given window where histogram is - * of fixed size 256 without ranges and offsets. - * - * @param[in] win Region on which to execute the kernel - * @param[in] info Info about the executing thread - */ - void histogram_fixed_U8(Window win, const ThreadInfo &info); - /** Pre-calculate the pixel windowing for every possible pixel - * - * Calculate (V - offset) * numBins / range where V is every possible pixel value. - * - * @note We currently support U8 image thus possible pixel values are between 0 and 255 - */ - void calculate_window_lut() const; - /** Common signature for all the specialised Histogram functions - * - * @param[in] window Region on which to execute the kernel. - */ - using HistogramFunctionPtr = void (NEHistogramKernel::*)(Window window, const ThreadInfo &info); - - HistogramFunctionPtr _func; ///< Histogram function to use for the particular image types passed to configure() - const IImage *_input; - IDistribution1D *_output; - uint32_t *_local_hist; - uint32_t *_window_lut; - arm_compute::Mutex _hist_mtx; - static constexpr unsigned int _max_range_size{ 256 }; ///< 256 possible pixel values as we handle only U8 images -}; -} // namespace arm_compute -#endif /*ARM_COMPUTE_NEHISTOGRAMKERNEL_H */ |