/*]  Copyright (c) 2009-2011, Charles McGarvey  [*****************************
**]  All rights reserved.
*
* Distributable under the terms and conditions of the 2-clause BSD license;
* see the file COPYING for a complete text of the license.
*
*****************************************************************************/

#if HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdexcept>

#include <SDL/SDL.h>

#include "backend.hh"
#include "fastevents.h"
#include "log.hh"


namespace moof {


static int retain_count = 0;

backend::backend()
{
	if (retain_count++ == 0)
	{
#if PLATFORM_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());
		}
	}
}

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

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

backend::~backend()
{
	if (--retain_count == 0)
	{
		log_info("shutting down SDL...");
		FE_Quit();
		SDL_Quit();
	}
}

bool backend::is_initialized()
{
	return 0 < retain_count;
}


} // namespace moof