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/*
* Copyright (c) 2016-2018 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_NEABSOLUTEDIFFERENCEKERNEL_H__
#define __ARM_COMPUTE_NEABSOLUTEDIFFERENCEKERNEL_H__
#include "arm_compute/core/NEON/INEKernel.h"
namespace arm_compute
{
class ITensor;
/** Interface for the absolute difference kernel
*
* Absolute difference is computed by:
* @f[ output(x,y) = | input1(x,y) - input2(x,y) | @f]
*/
class NEAbsoluteDifferenceKernel : public INEKernel
{
public:
const char *name() const override
{
return "NEAbsoluteDifferenceKernel";
}
/** Default constructor */
NEAbsoluteDifferenceKernel();
/** Prevent instances of this class from being copied (As this class contains pointers) */
NEAbsoluteDifferenceKernel(const NEAbsoluteDifferenceKernel &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
NEAbsoluteDifferenceKernel &operator=(const NEAbsoluteDifferenceKernel &) = delete;
/** Allow instances of this class to be moved */
NEAbsoluteDifferenceKernel(NEAbsoluteDifferenceKernel &&) = default;
/** Allow instances of this class to be moved */
NEAbsoluteDifferenceKernel &operator=(NEAbsoluteDifferenceKernel &&) = default;
/** Default destructor */
~NEAbsoluteDifferenceKernel() = default;
/** Set the inputs and output tensors
*
* @param[in] input1 Source tensor. Data types supported: U8/S16
* @param[in] input2 Source tensor. Data types supported: U8/S16
* @param[out] output Destination tensor, Data types supported: U8/S16
*/
void configure(const ITensor *input1, const ITensor *input2, ITensor *output);
// Inherited methods overridden:
void run(const Window &window, const ThreadInfo &info) override;
private:
/** Common signature for all the specialised absolute difference functions
*
* @param[in] input1 An input tensor. Data types supported: U8/S16.
* @param[in] input2 An input tensor. Data types supported: U8/S16.
* @param[out] output The output tensor, Data types supported: U8 (Only if both inputs are U8), S16.
* @param[in] window Region on which to execute the kernel.
*/
using AbsDiffFunction = void(const ITensor *input1, const ITensor *input2, ITensor *output, const Window &window);
/** Absolute difference function to use for the particular tensor formats passed to configure() */
AbsDiffFunction *_func;
const ITensor *_input1;
const ITensor *_input2;
ITensor *_output;
};
} // namespace arm_compute
#endif /* __ARM_COMPUTE_NEABSOLUTEDIFFERENCEKERNEL_H__ */
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