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/*
* Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
*
* 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.
*/
#ifndef __INTERNAL_NNAPI_MATRIX_READER_H__
#define __INTERNAL_NNAPI_MATRIX_READER_H__
#include "util/matrix/Shape.h"
#include "util/matrix/Reader.h"
namespace internal
{
namespace nnapi
{
namespace matrix
{
template <typename T> class Reader final : public nnfw::util::matrix::Reader<T>
{
public:
// NOTE The parameter len denotes the number of bytes.
Reader(const ::nnfw::util::matrix::Shape &shape, const T *ptr, size_t len)
: _shape{shape}, _ptr{ptr}
{
assert(shape.H * shape.W * sizeof(T) == len);
}
public:
const nnfw::util::matrix::Shape &shape(void) const { return _shape; }
public:
T at(uint32_t row, uint32_t col) const override
{
// NNAPI uses NHWC ordering
uint32_t index = 0;
index += row * _shape.W;
index += col;
return _ptr[index];
}
private:
nnfw::util::matrix::Shape _shape;
private:
const T *_ptr;
};
} // namespace matrix
} // namespace nnapi
} // namespace internal
#endif // __INTERNAL_NNAPI_MATRIX_READER_H__
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