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/************************************************************************
*
* Copyright (C) 2023-2025 IRCAD France
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#include "nvjpeg2k.hpp"
#include "gdcmSequenceOfFragments.h"
#include <io/bitmap/writer.hpp>
namespace sight::io::dicom::codec
{
//------------------------------------------------------------------------------
static inline core::type gdcm_to_sight_pf(const gdcm::PixelFormat& _pf)
{
switch(_pf.GetScalarType())
{
case gdcm::PixelFormat::SINGLEBIT:
case gdcm::PixelFormat::UINT8:
return core::type::UINT8;
case gdcm::PixelFormat::INT8:
return core::type::INT8;
case gdcm::PixelFormat::UINT16:
return core::type::UINT16;
case gdcm::PixelFormat::INT16:
return core::type::INT16;
case gdcm::PixelFormat::UINT32:
return core::type::UINT32;
case gdcm::PixelFormat::INT32:
return core::type::INT32;
case gdcm::PixelFormat::UINT64:
return core::type::UINT64;
case gdcm::PixelFormat::INT64:
return core::type::INT64;
case gdcm::PixelFormat::FLOAT32:
return core::type::FLOAT;
case gdcm::PixelFormat::FLOAT64:
return core::type::DOUBLE;
default:
return core::type::NONE;
}
}
//------------------------------------------------------------------------------
static inline enum data::image::pixel_format_t gdcm_to_sight_pi(
const gdcm::PhotometricInterpretation& _pi,
const gdcm::PixelFormat& _pf
)
{
if(_pi == gdcm::PhotometricInterpretation::PALETTE_COLOR)
{
// PALETTE_COLOR is always expended as RGB
return data::image::pixel_format_t::rgb;
}
const auto gdcm_sample_per_pixel = _pf.GetSamplesPerPixel();
if(gdcm_sample_per_pixel == 1)
{
// No need to check, no color space conversion...
return data::image::pixel_format_t::gray_scale;
}
if(gdcm_sample_per_pixel == 3
&& (_pi == gdcm::PhotometricInterpretation::YBR_FULL
|| _pi == gdcm::PhotometricInterpretation::YBR_FULL_422
|| _pi == gdcm::PhotometricInterpretation::YBR_ICT
|| _pi == gdcm::PhotometricInterpretation::YBR_RCT
|| _pi == gdcm::PhotometricInterpretation::RGB))
{
return data::image::pixel_format_t::rgb;
}
// Unsupported...
return data::image::pixel_format_t::undefined;
}
//------------------------------------------------------------------------------
bool nvjpeg2k::Code(gdcm::DataElement const& _in, gdcm::DataElement& _out)
{
_out = _in;
gdcm::SmartPointer<gdcm::SequenceOfFragments> sq = new gdcm::SequenceOfFragments;
const auto* dims = this->GetDimensions();
const auto* in_byte_value = _in.GetByteValue();
const auto* in_pointer = in_byte_value->GetPointer();
const auto in_length = in_byte_value->GetLength();
const auto frame_size = in_length / dims[2];
// Create the image used as input buffer
auto image = std::make_shared<data::image>();
const auto dump_lock = image->dump_lock();
// Create the writer
auto writer = std::make_shared<bitmap::writer>();
writer->set_object(image);
// The output buffer is resized by the writer if not big enough
std::vector<std::uint8_t> output_buffer(frame_size);
const auto& sight_type = gdcm_to_sight_pf(this->GetPixelFormat());
const auto& sight_size = sight::data::image::size_t {dims[0], dims[1], 1};
const auto& sight_format = gdcm_to_sight_pi(this->GetPhotometricInterpretation(), this->GetPixelFormat());
for(std::size_t z = 0, end = dims[2] ; z < end ; ++z)
{
// Compute the address of the current frame
const char* in_frame = in_pointer + (z * std::size_t(frame_size));
// We change the buffer address of the image to avoid unneeded copy
image->set_buffer(
// NOLINTNEXTLINE(cppcoreguidelines-pro-type-const-cast)
const_cast<char*>(in_frame),
false,
sight_type,
sight_size,
sight_format,
std::make_shared<core::memory::buffer_no_alloc_policy>()
);
// Encode the frame
const auto output_size = writer->write(
output_buffer,
bitmap::backend::nvjpeg2k_j2k,
bitmap::writer::mode::fast
);
SIGHT_THROW_IF("Output size is greater than 4GB", output_size > 0xFFFFFFFF);
// Add the encoded frame to the sequence
gdcm::Fragment frag;
frag.SetByteValue(reinterpret_cast<char*>(output_buffer.data()), std::uint32_t(output_size));
sq->AddFragment(frag);
}
_out.SetValue(*sq);
return true;
}
//------------------------------------------------------------------------------
gdcm::ImageCodec* nvjpeg2k::Clone() const
{
auto* copy = new nvjpeg2k;
return copy;
}
} // namespace sight::io::dicom::codec
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