FrameBuffer.cpp

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/*
 * Copyright (c) 2015-2024, EPFL/Blue Brain Project
 *
 * The Blue Brain BioExplorer is a tool for scientists to extract and analyse
 * scientific data from visualization
 *
 * This file is part of Blue Brain BioExplorer <https://github.com/BlueBrain/BioExplorer>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 3.0 as published
 * by the Free Software Foundation.
 *
 * This library 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 this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#include "FrameBuffer.h"
 
namespace core
{
FrameBuffer::FrameBuffer(const std::string& name, const Vector2ui& frameSize, const FrameBufferFormat frameBufferFormat)
    : _name(name)
    , _frameSize(frameSize)
    , _frameBufferFormat(frameBufferFormat)
{
}
 
size_t FrameBuffer::getColorDepth() const
{
    switch (_frameBufferFormat)
    {
    case FrameBufferFormat::rgba_i8:
    case FrameBufferFormat::bgra_i8:
    case FrameBufferFormat::rgb_f32:
        return 4;
    case FrameBufferFormat::rgb_i8:
        return 3;
    default:
        return 0;
    }
}
 
freeimage::ImagePtr FrameBuffer::getImage()
{
    map();
    const auto colorBuffer = getColorBuffer();
    const auto& size = getSize();
 
    freeimage::ImagePtr image(FreeImage_ConvertFromRawBits(const_cast<uint8_t*>(colorBuffer), size.x, size.y,
                                                           getColorDepth() * size.x, 8 * getColorDepth(), 0xFF0000,
                                                           0x00FF00, 0x0000FF, false));
 
    unmap();
 
#if FREEIMAGE_COLORORDER == FREEIMAGE_COLORORDER_BGR
    freeimage::SwapRedBlue32(image.get());
#endif
    return image;
}
} // namespace core