/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
**]  All rights reserved.
*
* vi:ts=4 sw=4 tw=75
*
* Distributable under the terms and conditions of the 2-clause BSD license;
* see the file COPYING for a complete text of the license.
*
**************************************************************************/

#include <stdexcept>

#include <SDL/SDL.h>
#include "fastevents.h"

#include "backend.hh"
#include "log.hh"


namespace moof {


struct impl
{
	static bool		is_initialized;
	static int		retain_count;
};

bool	impl::is_initialized = false;
int		impl::retain_count = 0;


backend::backend()
{
	if (impl::retain_count++ == 0)
	{
#if defined(_WIN32)
		if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0)
#else
		if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTTHREAD) != 0)
#endif
		{
			throw std::runtime_error(SDL_GetError());
		}
		else
		{
			char name[128];
			SDL_VideoDriverName(name, sizeof(name));
			log_info << "initialized SDL; using video driver `"
					<< name << "'" << std::endl;
		}

		if (FE_Init() != 0)
		{
			throw std::runtime_error(FE_GetError());
		}
	}

	impl::is_initialized = true;
}

backend::backend(const backend& backend)
{
	++impl::retain_count;
}

backend& backend::operator=(const backend& backend)
{
	++impl::retain_count;
	return *this;
}

backend::~backend()
{
	if (--impl::retain_count == 0)
	{
		FE_Quit();
		SDL_Quit();

		impl::is_initialized = false;
	}
}

bool backend::is_initialized()
{
	return impl::is_initialized;
}


} // namespace moof