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/*
* 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_NEMEANSTDDEV_H
#define ARM_COMPUTE_NEMEANSTDDEV_H
#include "arm_compute/core/IMultiImage.h"
#include "arm_compute/core/Types.h"
#include "arm_compute/runtime/IFunction.h"
#include <memory>
#include <cstdint>
namespace arm_compute
{
class NEMeanStdDevKernel;
class NEFillBorderKernel;
/** Basic function to execute mean and std deviation. This function calls the following Neon kernels:
*
* @ref NEMeanStdDevKernel
*
*/
class NEMeanStdDev : public IFunction
{
public:
/** Default Constructor. */
NEMeanStdDev();
/** Prevent instances of this class from being copied (As this class contains pointers) */
NEMeanStdDev(const NEMeanStdDev &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
NEMeanStdDev &operator=(const NEMeanStdDev &) = delete;
/** Prevent instances of this class from being moved (As this class contains non movable objects) */
NEMeanStdDev(NEMeanStdDev &&) = delete;
/** Prevent instances of this class from being moved (As this class contains non movable objects) */
NEMeanStdDev &operator=(NEMeanStdDev &&) = delete;
/** Default destructor */
~NEMeanStdDev();
/** Initialise the kernel's inputs and outputs.
*
* @param[in, out] input Input image. Data types supported: U8. (Written to only for border filling)
* @param[out] mean Output average pixel value.
* @param[out] stddev (Optional) Output standard deviation of pixel values.
*/
void configure(IImage *input, float *mean, float *stddev = nullptr);
// Inherited methods overridden:
void run() override;
private:
std::unique_ptr<NEMeanStdDevKernel> _mean_stddev_kernel; /**< Kernel that standard deviation calculation. */
std::unique_ptr<NEFillBorderKernel> _fill_border_kernel; /**< Kernel that fills tensor's borders with zeroes. */
uint64_t _global_sum; /**< Variable that holds the global sum among calls in order to ease reduction */
uint64_t _global_sum_squared; /**< Variable that holds the global sum of squared values among calls in order to ease reduction */
};
}
#endif /*ARM_COMPUTE_NEMEANSTDDEV_H */
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