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// Copyright 2018 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#include <unistd.h>

#include "DolphinNoGUI/Platform.h"

#include "Common/MsgHandler.h"
#include "Core/ConfigManager.h"
#include "Core/Core.h"
#include "Core/State.h"

#include <climits>
#include <cstdio>

#include <fcntl.h>
#include <linux/fb.h>
#include <linux/kd.h>
#include <linux/vt.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <termios.h>
#include <unistd.h>
#include "VideoCommon/RenderBase.h"

namespace
{
class PlatformFBDev : public Platform
{
public:
~PlatformFBDev() override;

bool Init() override;
void SetTitle(const std::string& string) override;
void MainLoop() override;

WindowSystemInfo GetWindowSystemInfo() const;

private:
bool OpenFramebuffer();

int m_fb_fd = -1;
};

PlatformFBDev::~PlatformFBDev()
{
if (m_fb_fd >= 0)
close(m_fb_fd);
}

bool PlatformFBDev::Init()
{
if (!OpenFramebuffer())
return false;

return true;
}

bool PlatformFBDev::OpenFramebuffer()
{
m_fb_fd = open("/dev/fb0", O_RDWR);
if (m_fb_fd < 0)
{
std::fprintf(stderr, "open(/dev/fb0) failed\n");
return false;
}

return true;
}

void PlatformFBDev::SetTitle(const std::string& string)
{
std::fprintf(stdout, "%s\n", string.c_str());
}

void PlatformFBDev::MainLoop()
{
while (IsRunning())
{
UpdateRunningFlag();
Core::HostDispatchJobs();

// TODO: Is this sleep appropriate?
std::this_thread::sleep_for(std::chrono::milliseconds(1));
}
}

WindowSystemInfo PlatformFBDev::GetWindowSystemInfo() const
{
WindowSystemInfo wsi;
wsi.type = WindowSystemType::FBDev;
wsi.display_connection = nullptr; // EGL_DEFAULT_DISPLAY
wsi.render_surface = nullptr;
return wsi;
}
} // namespace

std::unique_ptr<Platform> Platform::CreateFBDevPlatform()
{
return std::make_unique<PlatformFBDev>();
}