%% Copyright (c) 2014, Loïc Hoguin <essen@ninenines.eu>
%%
%% Permission to use, copy, modify, and/or distribute this software for any
%% purpose with or without fee is hereby granted, provided that the above
%% copyright notice and this permission notice appear in all copies.
%%
%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

-module(sdl).

-export([start/0]).
-export([start/1]).
-export([stop/0]).
-export([stop_on_exit/0]).
-export([start_subsystems/1]).
-export([stop_subsystems/1]).
-export([is_started/1]).

start() ->
	start([]).

start(Subsystems) ->
	esdl2:init(Subsystems),
	receive {'_nif_thread_ret_', Ret} -> Ret end.

stop() ->
	esdl2:quit().

stop_on_exit() ->
	Self = self(),
	spawn_link(fun() ->
		process_flag(trap_exit, true),
		receive {'EXIT', Self, _} ->
			stop()
		end
	end),
	ok.

start_subsystems(Subsystems) ->
	esdl2:init_subsystem(Subsystems),
	receive {'_nif_thread_ret_', Ret} -> Ret end.

stop_subsystems(Subsystems) ->
	esdl2:quit_subsystem(Subsystems).

is_started(Subsystem) ->
	esdl2:was_init([Subsystem]),
	receive {'_nif_thread_ret_', Ret} -> Ret end.