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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 __NEURUN_EXEC_SOURCE_H__
#define __NEURUN_EXEC_SOURCE_H__
#include <cassert>
#include "cpp14/memory.h"
#include "util/feature/nchw/View.h"
#include "util/feature/nhwc/Reader.h"
#include "util/feature/Coordinate4D.h"
#include <misc/feature/IndexIterator.h>
namespace neurun
{
namespace exec
{
struct ISource
{
virtual ~ISource() = default;
virtual void push(::neurun::backend::operand::ITensor &tensor) const = 0;
};
template <typename T> class Source final : public ISource
{
public:
Source(const T *base, const size_t size) : _base{base}, _size{size} {}
public:
void push(::neurun::backend::operand::ITensor &tensor) const override
{
memcpy(tensor.buffer(), _base, _size);
}
private:
const T *const _base;
const size_t _size;
};
class PermutateSource final : public ISource
{
public:
PermutateSource(const void *input_buffer, const size_t &input_size,
const model::operand::Shape &shape)
: _input_buffer{(uint8_t *)input_buffer}, _input_size{input_size}, _shape{shape}
{
}
public:
void push(neurun::backend::operand::ITensor &tensor) const override
{
// do NHWC_TO_NCHW permutation
auto output_buffer = tensor.buffer();
auto rank = _shape.rank();
switch (rank)
{
case 0:
case 1:
{
memcpy(output_buffer, _input_buffer, _input_size);
break;
}
case 2:
{
auto matrix_shape = _shape.asMatrix();
for (auto h = 0; h < matrix_shape.H; ++h)
{
neurun::util::feature::Coordinate4D coord{0, h, 0, 0};
memcpy(output_buffer + tensor.calcOffset(coord), _input_buffer + h * matrix_shape.W,
matrix_shape.W * sizeof(float));
}
break;
}
case 3:
{
const int32_t depth = _shape.dim(0);
const int32_t height = _shape.dim(1);
const int32_t width = _shape.dim(2);
for (auto c = 0; c < depth; ++c)
{
for (auto h = 0; h < height; ++h)
{
neurun::util::feature::Coordinate4D coord{0, h, 0, c};
memcpy(output_buffer + tensor.calcOffset(coord),
_input_buffer + c * height * width + h * width, width * sizeof(float));
}
}
break;
}
case 4:
{
auto feature = _shape.asFeature();
const util::feature::nhwc::Reader<float> from{
feature, reinterpret_cast<const float *>(_input_buffer), _input_size};
util::feature::nchw::View<float> into{&tensor};
::nnfw::misc::feature::iterate(feature)
<< [&](uint32_t batch, uint32_t ch, uint32_t row, uint32_t col) {
const auto value = from.at(batch, ch, row, col);
into.at(batch, ch, row, col) = value;
};
break;
}
default:
throw "NYI";
break;
}
}
private:
const uint8_t *_input_buffer;
const size_t _input_size;
const model::operand::Shape _shape;
};
} // namespace exec
} // namespace neurun
#endif // __NEURUN_EXEC_SOURCE_H__
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