/*
    Copyright (C) 2015 Carl Hetherington <cth@carlh.net>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#include "frame_rate.h"
#include "exceptions.h"
#include <cmath>

double
sub::enum_to_value (FrameRate r)
{
	switch (r) {
	case TWENTY_THREE_DROP:
		return 23.976;
	case TWENTY_FOUR:
		return 24;
	case TWENTY_FIVE:
		return 25;
	case THIRTY_DROP:
		return 29.97;
	case THIRTY:
		return 30;
	}

	return TWENTY_FOUR;
}

sub::FrameRate
sub::value_to_enum (double r)
{
	if (fabs (r - 23.976) < 0.001) {
		return TWENTY_THREE_DROP;
	} else if (fabs (r - 24) < 0.001) {
		return TWENTY_FOUR;
	} else if (fabs (r - 25) < 0.001) {
		return TWENTY_FIVE;
	} else if (fabs (r - 29.97) < 0.001) {
		return THIRTY_DROP;
	} else if (fabs (r - 30) < 0.001) {
		return THIRTY;
	}

	throw UnsupportedFrameRateException ();
}