Method: SDL.setup_timer_symbols

Defined in:
lib/sdl2_timer.rb

.setup_timer_symbols(output_error = false) ⇒ Object

Function



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# File 'lib/sdl2_timer.rb', line 27

def self.setup_timer_symbols(output_error = false)
  symbols = [
    :SDL_GetTicks,
    :SDL_GetTicks64,
    :SDL_GetPerformanceCounter,
    :SDL_GetPerformanceFrequency,
    :SDL_Delay,
    :SDL_AddTimer,
    :SDL_RemoveTimer,
  ]
  apis = {
    :SDL_GetTicks => :GetTicks,
    :SDL_GetTicks64 => :GetTicks64,
    :SDL_GetPerformanceCounter => :GetPerformanceCounter,
    :SDL_GetPerformanceFrequency => :GetPerformanceFrequency,
    :SDL_Delay => :Delay,
    :SDL_AddTimer => :AddTimer,
    :SDL_RemoveTimer => :RemoveTimer,
  }
  args = {
    :SDL_GetTicks => [],
    :SDL_GetTicks64 => [],
    :SDL_GetPerformanceCounter => [],
    :SDL_GetPerformanceFrequency => [],
    :SDL_Delay => [:uint],
    :SDL_AddTimer => [:uint, :SDL_TimerCallback, :pointer],
    :SDL_RemoveTimer => [:int],
  }
  retvals = {
    :SDL_GetTicks => :uint,
    :SDL_GetTicks64 => :ulong_long,
    :SDL_GetPerformanceCounter => :ulong_long,
    :SDL_GetPerformanceFrequency => :ulong_long,
    :SDL_Delay => :void,
    :SDL_AddTimer => :int,
    :SDL_RemoveTimer => :int,
  }
  symbols.each do |sym|
    begin
      attach_function apis[sym], sym, args[sym], retvals[sym]
    rescue FFI::NotFoundError => error
      $stderr.puts("[Warning] Failed to import #{sym} (#{error}).") if output_error
    end
  end
end