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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.
*/
#include "gencore/HDF5Importer.h"
#include "gencore/HDF5Common.h"
#include <angkor/TensorShape.h>
#include <nncc/core/ADT/tensor/IndexEnumerator.h>
#include <nncc/core/ADT/tensor/LexicalLayout.h>
#include <nncc/core/ADT/tensor/Overlay.h>
#include <nncc/core/ADT/tensor/Accessor.h>
#include <H5Cpp.h>
#include <cassert>
namespace
{
template <typename DT> H5::PredType get_h5_datatype();
template <> H5::PredType get_h5_datatype<float>() { return H5::PredType::NATIVE_FLOAT; }
template <typename DT> H5::PredType get_h5_store_format();
template <> H5::PredType get_h5_store_format<float>() { return H5::PredType::IEEE_F32BE; }
} // namespace
namespace gencore
{
template <typename DT>
void HDF5Importer::read(uint32_t nth, const std::string &name, const angkor::TensorShape &shape,
nncc::core::ADT::tensor::Accessor<DT> *buf_accessor)
{
assert(buf_accessor != nullptr);
try
{
auto dataset = _value_grp.openDataSet(value_filename(nth));
assert(dataset.getDataType() == get_h5_store_format<DT>());
std::vector<DT> file_buf;
{
file_buf.resize(nncc::core::ADT::tensor::num_elements(shape));
dataset.read(file_buf.data(), get_h5_datatype<DT>());
}
using nncc::core::ADT::tensor::IndexEnumerator;
using nncc::core::ADT::tensor::LexicalLayout;
LexicalLayout layout{};
for (IndexEnumerator e{shape}; e.valid(); e.advance())
{
auto i = e.current();
buf_accessor->at(i) = file_buf[layout.offset(shape, i)];
}
}
catch (const H5::FileIException &)
{
// Skip if data is not present in HDF5 file
}
}
// template instantiation
template void HDF5Importer::read<float>(uint32_t, const std::string &, const angkor::TensorShape &,
nncc::core::ADT::tensor::Accessor<float> *);
} // namespace gencore
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