png_swapchain.hpp

/* Copyright (c) 2016-2017, ARM Limited and Contributors
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge,
 * to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef DMABUF_SWAPCHAIN_HPP
#define DMABUF_SWAPCHAIN_HPP

#include "libvulkan-stub.h"
#include <condition_variable>
#include <mutex>
#include <queue>
#include <string>
#include <thread>

#include "framework/common.hpp"

namespace MaliSDK
{

class PNGSwapchain
{
public:
        Result init(const char *pBasePath, unsigned swapchainImagesCount);

        ~PNGSwapchain();

        inline unsigned getNumImages() const
        {
                return swapchainImagesCount;
        }

        void present(unsigned index, VkDevice device, VkDeviceMemory memory, unsigned width, unsigned height,
                     unsigned numFences, VkFence *fences, bool coherent);

        unsigned acquire();

private:
        std::thread worker;
        unsigned swapchainImagesCount;
        std::string basePath;

        struct Command
        {
                VkDevice device;
                VkDeviceMemory memory;
                VkFence *fences;
                unsigned numFences;
                unsigned index;
                unsigned width;
                unsigned height;
                bool coherent;
        };

        std::queue<unsigned> vacant;
        std::queue<Command> ready;

        std::condition_variable cond;
        std::mutex lock;
        bool dead = false;

        void join();

        unsigned displayed = 0;

        void threadEntry();

        void dump(const Command &cmd, unsigned sequenceCount);
};
}

#endif