DeflectPixelOp.h

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/*
 * Copyright (c) 2017-2024, EPFL/Blue Brain Project
 * All rights reserved. Do not distribute without permission.
 * Responsible Author: Daniel Nachbaur <daniel.nachbaur@epfl.ch>
 *
 * This file is part of https://github.com/BlueBrain/Core
 *
 * 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.
 */
 
#pragma once
 
#include "DeflectParameters.h"
 
#include <deflect/Stream.h>
#include <map>
#include <ospray/SDK/fb/PixelOp.h>
 
namespace core
{
class DeflectPixelOp : public ::ospray::PixelOp
{
public:
    struct Instance : public ::ospray::PixelOp::Instance
    {
        Instance(::ospray::FrameBuffer* fb_, DeflectPixelOp& parent);
        ~Instance();
 
        void beginFrame() final;
        void endFrame() final;
        void postAccum(::ospray::Tile& tile) final;
        std::string toString() const final { return "DeflectPixelOp"; }
        struct PixelsDeleter
        {
            void operator()(unsigned char* pixels) { _mm_free(pixels); }
        };
        using Pixels = std::unique_ptr<unsigned char, PixelsDeleter>;
 
    private:
        DeflectPixelOp& _parent;
        std::vector<Pixels> _pixels;
 
        unsigned char* _copyPixels(::ospray::Tile& tile, const ::ospray::vec2i& tileSize);
    };
 
    void commit() final;
 
    ::ospray::PixelOp::Instance* createInstance(::ospray::FrameBuffer* fb, PixelOp::Instance* prev) final;
 
private:
    void _finish();
 
    std::unique_ptr<deflect::Stream> _deflectStream;
    std::map<pthread_t, std::shared_future<bool>> _finishFutures;
    std::mutex _mutex;
    DeflectParameters _params;
};
} // namespace core