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/*
* Copyright (c) 2018-2019 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_CL_STRIDED_SLICE_KERNEL_H
#define ARM_COMPUTE_CL_STRIDED_SLICE_KERNEL_H
#include "arm_compute/core/CL/ICLKernel.h"
#include "arm_compute/core/Types.h"
#include <cstdint>
namespace arm_compute
{
// Forward declarations
class ICLTensor;
/** Interface for the kernel to perform tensor strided slicing */
class CLStridedSliceKernel : public ICLKernel
{
public:
/** Default constructor */
CLStridedSliceKernel();
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLStridedSliceKernel(const CLStridedSliceKernel &) = delete;
/** Prevent instances of this class from being copied (As this class contains pointers) */
CLStridedSliceKernel &operator=(const CLStridedSliceKernel &) = delete;
/** Allow instances of this class to be moved */
CLStridedSliceKernel(CLStridedSliceKernel &&) = default;
/** Allow instances of this class to be moved */
CLStridedSliceKernel &operator=(CLStridedSliceKernel &&) = default;
/** Default destructor */
~CLStridedSliceKernel() = default;
/** Configure kernel
*
* @note Supported tensor rank: up to 4
*
* @param[in] input Source tensor. Data type supported: U8/S8/QASYMM8/U16/S16/QASYMM16/QSYMM16/U32/S32/F16/F32
* @param[out] output Destination tensor. Data type supported: Same as @p input
* @param[in] starts The starts of the dimensions of the input tensor to be sliced. The length must be of rank(input).
* @param[in] ends The ends of the dimensions of the input tensor to be sliced. The length must be of rank(input).
* @param[in] strides The strides of the dimensions of the input tensor to be sliced. The length must be of rank(input).
* @param[in] begin_mask If the ith bit of begin_mask is set, starts[i] is ignored and the fullest possible range in that dimension is used instead.
* @param[in] end_mask If the ith bit of end_mask is set, ends[i] is ignored and the fullest possible range in that dimension is used instead.
* @param[in] shrink_axis_mask If the ith bit of shrink_axis_mask is set, it implies that the ith specification shrinks the dimensionality by 1.
* A slice of size 1 starting from starts[i] in the dimension must be preserved.
*/
void configure(const ICLTensor *input, ICLTensor *output,
const Coordinates &starts, const Coordinates &ends, const BiStrides &strides,
int32_t begin_mask, int32_t end_mask, int32_t shrink_axis_mask);
/** Static function to check if given info will lead to a valid configuration of @ref CLStridedSliceKernel
*
* @note Supported tensor rank: up to 4
*
* @param[in] input Source tensor. Data type supported: U8/S8/QASYMM8/U16/S16/QASYMM16/QSYMM16/U32/S32/F16/F32
* @param[in] output Destination tensor. Data type supported: Same as @p input
* @param[in] starts The starts of the dimensions of the input tensor to be sliced. The length must be of rank(input).
* @param[in] ends The ends of the dimensions of the input tensor to be sliced. The length must be of rank(input).
* @param[in] strides The strides of the dimensions of the input tensor to be sliced. The length must be of rank(input).
* @param[in] begin_mask If the ith bit of begin_mask is set, starts[i] is ignored and the fullest possible range in that dimension is used instead.
* @param[in] end_mask If the ith bit of end_mask is set, ends[i] is ignored and the fullest possible range in that dimension is used instead.
* @param[in] shrink_axis_mask If the ith bit of shrink_axis_mask is set, it implies that the ith specification shrinks the dimensionality by 1.
* A slice of size 1 starting from starts[i] in the dimension must be preserved.
*/
static Status validate(const ITensorInfo *input, const ITensorInfo *output,
const Coordinates &starts, const Coordinates &ends, const BiStrides &strides,
int32_t begin_mask, int32_t end_mask, int32_t shrink_axis_mask);
// Inherited methods overridden:
void run(const Window &window, cl::CommandQueue &queue) override;
private:
const ICLTensor *_input; /**< Source tensor */
ICLTensor *_output; /**< Destination tensor */
};
} // namespace arm_compute
#endif /*ARM_COMPUTE_CL_STRIDED_SLICE_KERNEL_H */
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