2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/format.h
21 * @brief Classes to describe a format (aspect ratio) that a Film should
34 Format (Size dcp, std::string id, std::string n)
40 /** @return the aspect ratio multiplied by 100
41 * (e.g. 239 for Cinemascope 2.39:1)
43 virtual int ratio_as_integer (Film const * f) const = 0;
45 /** @return the ratio as a floating point number */
46 virtual float ratio_as_float (Film const * f) const = 0;
48 int dcp_padding (Film const * f) const;
50 /** @return size in pixels of the images that we should
51 * put in a DCP for this ratio. This size will not correspond
52 * to the ratio when we are doing things like 16:9 in a Flat frame.
54 Size dcp_size () const {
58 std::string id () const {
62 /** @return Full name to present to the user */
63 virtual std::string name () const = 0;
65 /** @return Nickname (e.g. Flat, Scope) */
66 std::string nickname () const {
70 std::string as_metadata () const;
72 static Format const * from_nickname (std::string n);
73 static Format const * from_metadata (std::string m);
74 static Format const * from_index (int i);
75 static Format const * from_id (std::string i);
76 static int as_index (Format const * f);
77 static std::vector<Format const *> all ();
78 static void setup_formats ();
81 /** Size in pixels of the images that we should
82 * put in a DCP for this ratio. This size will not correspond
83 * to the ratio when we are doing things like 16:9 in a Flat frame.
86 /** id for use in metadata */
88 /** nickname (e.g. Flat, Scope) */
89 std::string _nickname;
92 /** all available formats */
93 static std::vector<Format const *> _formats;
96 /** @class FixedFormat
97 * @brief Class to describe a format whose ratio is fixed regardless
100 class FixedFormat : public Format
103 FixedFormat (int, Size, std::string, std::string);
105 int ratio_as_integer (Film const *) const {
109 float ratio_as_float (Film const *) const {
110 return _ratio / 100.0;
113 std::string name () const;
117 /** Ratio expressed as the actual ratio multiplied by 100 */
121 class VariableFormat : public Format
124 VariableFormat (Size, std::string, std::string);
126 int ratio_as_integer (Film const * f) const;
127 float ratio_as_float (Film const * f) const;
129 std::string name () const;