/*
    Copyright (C) 2014 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 "stl_util.h"
#include "exceptions.h"
#include "compose.hpp"
#include <string>
#include <cmath>

using std::string;
using namespace sub;

string
sub::stl_frame_rate_to_dfc (FrameRate r)
{
	/* This is the FAB Subtitler mapping, as used by Annotation Edit */
	switch (r) {
	case TWENTY_THREE_DROP:
		return "STL24.01";
	case TWENTY_FOUR:
		return "STL23.01";
	case TWENTY_FIVE:
		return "STL25.01";
	case THIRTY_DROP:
		/* XXX: not right, but I don't think there is a value for this */
		return "STL30.01";
	case THIRTY:
		return "STL30.01";
	}

	return "STL25.01";
}

FrameRate
sub::stl_dfc_to_frame_rate (string s)
{
	if (s == "STL24.01") {
		return TWENTY_THREE_DROP;
	} else if (s == "STL23.01") {
		return TWENTY_FOUR;
	} else if (s == "STL25.01") {
		return TWENTY_FIVE;
	} else if (s == "STL30.01") {
		return THIRTY;
	}

	throw STLError (String::compose ("Unknown disk format code %1 in binary STL file", s));
}