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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_NETABLELOOKUPKERNEL_H
#define ARM_COMPUTE_NETABLELOOKUPKERNEL_H
#include "arm_compute/core/NEON/INESimpleKernel.h"
namespace arm_compute
{
class ITensor;
class ILut;
/** Interface for the kernel to perform table lookup calculations. */
class NETableLookupKernel : public INESimpleKernel
{
public:
const char *name() const override
{
return "NETableLookupKernel";
}
/** Default constructor */
NETableLookupKernel();
/** Prevent instances of this class from being copied (As this class contains pointers) */
NETableLookupKernel(const NETableLookupKernel &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
NETableLookupKernel &operator=(const NETableLookupKernel &) = delete;
/** Allow instances of this class to be moved */
NETableLookupKernel(NETableLookupKernel &&) = default;
/** Allow instances of this class to be moved */
NETableLookupKernel &operator=(NETableLookupKernel &&) = default;
/** Initialise the kernel's input, lut and output.
*
* @param[in] input An input tensor. Data types supported: U8/S16.
* @param[in] lut The input LUT.
* @param[out] output The output tensor. Data types supported: same as @p input
*/
void configure(const ITensor *input, const ILut *lut, ITensor *output);
// Inherited methods overridden:
void run(const Window &window, const ThreadInfo &info) override;
private:
/** Perform table lookup on a given window.
*
* @param window window Region on which to execute the kernel.
*/
template <class T>
void tableLookup(const Window &window);
/** Common signature for all the specialised lut functions
*
* @param[in] window Region on which to execute the kernel.
*/
using TableLookupFunction = void (NETableLookupKernel::*)(const Window &window);
/** Sub function to use for the particular tensor types passed to configure() */
TableLookupFunction _func;
const ILut *_lut;
};
} // namespace arm_compute
#endif /* ARM_COMPUTE_NETABLELOOKUPKERNEL_H */
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