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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_ITENSOR_H__
#define __ARM_COMPUTE_ITENSOR_H__
#include "arm_compute/core/ITensorInfo.h"
#include <cstdint>
namespace arm_compute
{
class Coordinates;
/** Interface for NEON tensor */
class ITensor
{
public:
/** Interface to be implemented by the child class to return the tensor's metadata
*
* @return A pointer to the tensor's metadata.
*/
virtual ITensorInfo *info() const = 0;
/** Interface to be implemented by the child class to return the tensor's metadata
*
* @return A pointer to the tensor's metadata.
*/
virtual ITensorInfo *info() = 0;
/** Default virtual destructor */
virtual ~ITensor() = default;
/** Interface to be implemented by the child class to return a pointer to CPU memory
*
* @return A CPU pointer to the beginning of the image's allocation.
*/
virtual uint8_t *buffer() const = 0;
/** Return a pointer to the element at the passed coordinates
*
* @param[in] id Coordinates of the element
*
* @return Pointer to the requested element
*/
inline uint8_t *ptr_to_element(const Coordinates &id) const
{
return buffer() + info()->offset_element_in_bytes(id);
}
/** Copy the content of another tensor.
*
* @note The number of dimensions of the source tensor must be less or equal to those of the destination tensor.
*
* @note All dimensions of the destination tensor must be greater or equal to the source tensor ones.
*
* @note num_channels() and element_size() of both tensors must match.
*
* @param[in] src Source tensor to copy from.
*/
void copy_from(const ITensor &src);
/** Print a tensor to a given stream using user defined formatting information
*
* @param s Output stream
* @param io_fmt Format information
*/
void print(std::ostream &s, IOFormatInfo io_fmt = IOFormatInfo()) const;
/** Flags if the tensor is used or not
*
* @return True if it is used else false
*/
bool is_used() const;
/** Marks a tensor as unused */
void mark_as_unused() const;
private:
mutable bool _is_used = { true }; /**< Flag that marks if the tensor is used or not */
};
using IImage = ITensor;
}
#endif /*__ARM_COMPUTE_ITENSOR_H__ */
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