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/*
* Copyright (c) 2016-2019 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_CLMEANSTDDEV_H__
#define __ARM_COMPUTE_CLMEANSTDDEV_H__
#include "arm_compute/core/CL/OpenCL.h"
#include "arm_compute/core/CL/kernels/CLFillBorderKernel.h"
#include "arm_compute/core/CL/kernels/CLMeanStdDevKernel.h"
#include "arm_compute/runtime/CL/functions/CLReductionOperation.h"
#include "arm_compute/runtime/IFunction.h"
#include "arm_compute/runtime/IMemoryManager.h"
#include "arm_compute/runtime/MemoryGroup.h"
namespace arm_compute
{
/** Basic function to execute mean and standard deviation by calling @ref CLMeanStdDevKernel */
class CLMeanStdDev : public IFunction
{
public:
/** Default Constructor. */
CLMeanStdDev(std::shared_ptr<IMemoryManager> memory_manager = nullptr);
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLMeanStdDev(const CLMeanStdDev &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLMeanStdDev &operator=(const CLMeanStdDev &) = delete;
/** Allow instances of this class to be moved */
CLMeanStdDev(CLMeanStdDev &&) = default;
/** Allow instances of this class to be moved */
CLMeanStdDev &operator=(CLMeanStdDev &&) = default;
/** Default destructor */
~CLMeanStdDev() = default;
/** Initialise the kernel's inputs and outputs.
*
* @param[in, out] input Input image. Data types supported: U8/F16/F32. (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(ICLImage *input, float *mean, float *stddev = nullptr);
/** Static function to check if given info will lead to a valid configuration of @ref CLMeanStdDev
*
* @param[in] input Input image. Data types supported: U8/F16/F32.
* @param[in] mean Output average pixel value.
* @param[in] stddev (Optional) Output standard deviation of pixel values.
*
* @return a status
*/
static Status validate(ITensorInfo *input, float *mean, float *stddev = nullptr);
// Inherited methods overridden:
void run() override;
private:
template <typename T>
void run_float();
void run_int();
MemoryGroup _memory_group; /**< Function's memory group */
DataType _data_type; /**< Input data type. */
unsigned int _num_pixels; /**< Number of image's pixels. */
bool _run_stddev; /**< Flag for knowing if we should run stddev reduction function. */
CLReductionOperation _reduction_operation_mean; /**< Reduction operation function for computing mean value. */
CLReductionOperation _reduction_operation_stddev; /**< Reduction operation function for computing standard deviation. */
CLTensor _reduction_output_mean; /**< Reduction operation output tensor for mean value. */
CLTensor _reduction_output_stddev; /**< Reduction operation output tensor for standard deviation value. */
float *_mean; /**< Pointer that holds the mean value. */
float *_stddev; /**< Pointer that holds the standard deviation value. */
CLMeanStdDevKernel _mean_stddev_kernel; /**< Kernel that standard deviation calculation. */
CLFillBorderKernel _fill_border_kernel; /**< Kernel that fills the border with zeroes. */
cl::Buffer _global_sum; /**< Variable that holds the global sum among calls in order to ease reduction */
cl::Buffer _global_sum_squared; /**< Variable that holds the global sum of squared values among calls in order to ease reduction */
};
}
#endif /*__ARM_COMPUTE_CLMEANSTDDEV_H__ */
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