2 Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
19 In addition, as a special exception, the copyright holders give
20 permission to link the code of portions of this program with the
21 OpenSSL library under certain conditions as described in each
22 individual source file, and distribute linked combinations
25 You must obey the GNU General Public License in all respects
26 for all of the code used other than OpenSSL. If you modify
27 file(s) with this exception, you may extend this exception to your
28 version of the file(s), but you are not obligated to do so. If you
29 do not wish to do so, delete this exception statement from your
30 version. If you delete this exception statement from all source
31 files in the program, then also delete it here.
34 #include "raw_convert.h"
36 #include "exceptions.h"
37 #include "compose.hpp"
38 #include <boost/algorithm/string.hpp>
45 using namespace boost;
47 /** Construct a Fraction from a string of the form <numerator> <denominator>
50 Fraction::Fraction (string s)
53 split (b, s, is_any_of (" "));
55 boost::throw_exception (XMLError ("malformed fraction " + s + " in XML node"));
57 numerator = raw_convert<int> (b[0]);
58 denominator = raw_convert<int> (b[1]);
62 Fraction::as_string () const
64 return String::compose ("%1 %2", numerator, denominator);
68 dcp::operator== (Fraction const & a, Fraction const & b)
70 return (a.numerator == b.numerator && a.denominator == b.denominator);
74 dcp::operator!= (Fraction const & a, Fraction const & b)
76 return (a.numerator != b.numerator || a.denominator != b.denominator);
80 dcp::operator<< (ostream& s, Fraction const & f)
82 s << f.numerator << "/" << f.denominator;
86 /** Construct a Colour, initialising it to black. */
95 /** Construct a Colour from R, G and B. The values run between
98 Colour::Colour (int r_, int g_, int b_)
106 /** Construct a Colour from an ARGB hex string; the alpha value is ignored.
107 * @param argb_hex A string of the form AARRGGBB, where e.g. RR is a two-character
110 Colour::Colour (string argb_hex)
113 if (sscanf (argb_hex.c_str(), "%2x%2x%2x%2x", &alpha, &r, &g, &b) != 4) {
114 boost::throw_exception (XMLError ("could not parse colour string"));
118 /** @return An ARGB string of the form AARRGGBB, where e.g. RR is a two-character
119 * hex value. The alpha value will always be FF (ie 255; maximum alpha).
122 Colour::to_argb_string () const
125 snprintf (buffer, sizeof(buffer), "FF%02X%02X%02X", r, g, b);
129 /** @return An RGB string of the form RRGGBB, where e.g. RR is a two-character
133 Colour::to_rgb_string () const
136 snprintf (buffer, sizeof(buffer), "%02X%02X%02X", r, g, b);
140 /** operator== for Colours.
141 * @param a First colour to compare.
142 * @param b Second colour to compare.
145 dcp::operator== (Colour const & a, Colour const & b)
147 return (a.r == b.r && a.g == b.g && a.b == b.b);
150 /** operator!= for Colours.
151 * @param a First colour to compare.
152 * @param b Second colour to compare.
155 dcp::operator!= (Colour const & a, Colour const & b)
161 dcp::operator<< (ostream& s, Colour const & c)
163 s << "(" << c.r << ", " << c.g << ", " << c.b << ")";
168 dcp::effect_to_string (Effect e)
179 boost::throw_exception (MiscError ("unknown effect type"));
183 dcp::string_to_effect (string s)
187 } else if (s == "border") {
189 } else if (s == "shadow") {
193 boost::throw_exception (DCPReadError ("unknown subtitle effect type"));
197 dcp::halign_to_string (HAlign h)
208 boost::throw_exception (MiscError ("unknown subtitle halign type"));
212 dcp::string_to_halign (string s)
216 } else if (s == "center") {
217 return HALIGN_CENTER;
218 } else if (s == "right") {
222 boost::throw_exception (DCPReadError ("unknown subtitle halign type"));
226 dcp::valign_to_string (VAlign v)
237 boost::throw_exception (MiscError ("unknown subtitle valign type"));
241 dcp::string_to_valign (string s)
245 } else if (s == "center") {
246 return VALIGN_CENTER;
247 } else if (s == "bottom") {
248 return VALIGN_BOTTOM;
251 boost::throw_exception (DCPReadError ("unknown subtitle valign type"));
255 dcp::direction_to_string (Direction v)
268 boost::throw_exception (MiscError ("unknown subtitle direction type"));
272 dcp::string_to_direction (string s)
274 if (s == "ltr" || s == "horizontal") {
275 return DIRECTION_LTR;
276 } else if (s == "rtl") {
277 return DIRECTION_RTL;
278 } else if (s == "ttb" || s == "vertical") {
279 return DIRECTION_TTB;
280 } else if (s == "btt") {
281 return DIRECTION_BTT;
284 boost::throw_exception (DCPReadError ("unknown subtitle direction type"));