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/*
* Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
* Copyright (c) 2016-2018 ARM Limited.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file CLHashtableLookupKernel.h
* @ingroup COM_AI_RUNTIME
* @brief This file defines CLHashtableLookupKernel class
*/
#ifndef __ARM_COMPUTE_CLHASHTABLELOOKUPKERNEL_H__
#define __ARM_COMPUTE_CLHASHTABLELOOKUPKERNEL_H__
#include "arm_compute/core/CL/ICLKernel.h"
#include "arm_compute/runtime/CL/CLTensor.h"
namespace arm_compute
{
class ICLTensor;
/**
* @brief Class to perform HashtableLookup operation with opencl kernel
*/
class CLHashtableLookupKernel : public ICLKernel
{
public:
/**
* @brief Construct a CLHashtableLookupKernel object
* */
CLHashtableLookupKernel();
/**
* @brief Prevent instances of this class from being copied (As this class contains pointers)
* */
CLHashtableLookupKernel(const CLHashtableLookupKernel &) = delete;
/**
* @brief Prevent instances of this class from being copied (As this class contains pointers)
* */
CLHashtableLookupKernel &operator=(const CLHashtableLookupKernel &) = delete;
/**
* @brief Construct a CLHashtableLookupKernel object by using default move constructor
* @param[in] CLHashtableLookupKernel object to move
* */
CLHashtableLookupKernel(CLHashtableLookupKernel &&) = default;
/**
* @brief Move assignment operator
* @param[in] CLHashtableLookupKernel object to move
* */
CLHashtableLookupKernel &operator=(CLHashtableLookupKernel &&) = default;
/**
* @brief Destruct this object
* */
~CLHashtableLookupKernel() = default;
/**
* @brief Set the input and output of the kernel
* @param[in] lookups Lookups 1D tensor that values are indices into the first dimension of
* input.
* @param[in] keys Keys 1D tensor. keys and input pair represent a map.
* Data types supported: S32
* @param[in] input Source tensor.
* Data types supported: U8/S8/QASYMM8/U16/S16/U32/S32/F16/F32
* @param[out] output Destination tensor. Data types and data layouts supported: Same as @p
* input.
* @param[out] hits Hits 1D tensor. A boolean tensor that indicates whether the lookup hits
* (True) or not (False). Data types supported: U8/QASYMM8
* @return N/A
*/
void configure(const ICLTensor *lookups, const ICLTensor *keys, const ICLTensor *input,
ICLTensor *output, ICLTensor *hits);
/**
* @brief Static function to check if given info will lead to a valid configuration of @ref
* CLHashtableLookupKernel
* @param[in] lookups The lookups tensor info. Data types supported: S32.
* @param[in] keys The keys tensor info. keys and input pair represent a map.
* Data types supported: S32
* @param[in] input The input tensor info.
* Data types supported: U8/S8/QASYMM8/U16/S16/U32/S32/F16/F32
* @param[out] output The output tensor. Data types and data layouts supported: Same as @p
* input.
* @param[out] hits The hits tensor info. A boolean tensor that indicates whether the lookup
* hits
* (True) or not (False). Data types supported: U8/QASYMM8
* @return a status
*/
static Status validate(const ITensorInfo *lookups, const ITensorInfo *keys,
const ITensorInfo *input, const ITensorInfo *output,
const ITensorInfo *hits);
/**
* @brief Enqueue the OpenCL kernel to process the given window on the passed OpenCL command
* queue.
* @note The queue is *not* flushed by this method, and therefore the kernel will not have
* been executed by the time this method returns.
* @param[in] window Region on which to execute the kernel. (Must be a valid region of
* the window returned by window()).
* @param[in,out] queue Command queue on which to enqueue the kernel.@return N/A
* @return N/A
*/
void run(const Window &window, cl::CommandQueue &queue) override;
private:
const ICLTensor *_lookups; /** Lookups tensor */
const ICLTensor *_keys; /** Keys tensor */
const ICLTensor *_input; /** Source tensor */
ICLTensor *_output; /** Destination tensor */
ICLTensor *_hits; /** Hits tensor */
std::unique_ptr<CLTensor> _lookup_indices{nullptr}; /** Lookup indices tensor */
};
} // namespace arm_compute
#endif /*__ARM_COMPUTE_CLHASHTABLELOOKUPKERNEL_H__ */
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