FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
version.h
Go to the documentation of this file.
1 /*
2  * copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg 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 GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * @ingroup lavu
24  * Libavutil version macros
25  */
26 
27 #ifndef AVUTIL_VERSION_H
28 #define AVUTIL_VERSION_H
29 
30 #include "macros.h"
31 
32 /**
33  * @addtogroup version_utils
34  *
35  * Useful to check and match library version in order to maintain
36  * backward compatibility.
37  *
38  * The FFmpeg libraries follow a versioning sheme very similar to
39  * Semantic Versioning (http://semver.org/)
40  * The difference is that the component called PATCH is called MICRO in FFmpeg
41  * and its value is reset to 100 instead of 0 to keep it above or equal to 100.
42  * Also we do not increase MICRO for every bugfix or change in git master.
43  *
44  * Prior to FFmpeg 3.2 point releases did not change any lib version number to
45  * avoid aliassing different git master checkouts.
46  * Starting with FFmpeg 3.2, the released library versions will occupy
47  * a separate MAJOR.MINOR that is not used on the master development branch.
48  * That is if we branch a release of master 55.10.123 we will bump to 55.11.100
49  * for the release and master will continue at 55.12.100 after it. Each new
50  * point release will then bump the MICRO improving the usefulness of the lib
51  * versions.
52  *
53  * @{
54  */
55 
56 #define AV_VERSION_INT(a, b, c) ((a)<<16 | (b)<<8 | (c))
57 #define AV_VERSION_DOT(a, b, c) a ##.## b ##.## c
58 #define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
59 
60 /**
61  * Extract version components from the full ::AV_VERSION_INT int as returned
62  * by functions like ::avformat_version() and ::avcodec_version()
63  */
64 #define AV_VERSION_MAJOR(a) ((a) >> 16)
65 #define AV_VERSION_MINOR(a) (((a) & 0x00FF00) >> 8)
66 #define AV_VERSION_MICRO(a) ((a) & 0xFF)
67 
68 /**
69  * @}
70  */
71 
72 /**
73  * @defgroup lavu_ver Version and Build diagnostics
74  *
75  * Macros and function useful to check at compiletime and at runtime
76  * which version of libavutil is in use.
77  *
78  * @{
79  */
80 
81 
82 #define LIBAVUTIL_VERSION_MAJOR 55
83 #define LIBAVUTIL_VERSION_MINOR 74
84 #define LIBAVUTIL_VERSION_MICRO 100
85 
86 #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
87  LIBAVUTIL_VERSION_MINOR, \
88  LIBAVUTIL_VERSION_MICRO)
89 #define LIBAVUTIL_VERSION AV_VERSION(LIBAVUTIL_VERSION_MAJOR, \
90  LIBAVUTIL_VERSION_MINOR, \
91  LIBAVUTIL_VERSION_MICRO)
92 #define LIBAVUTIL_BUILD LIBAVUTIL_VERSION_INT
93 
94 #define LIBAVUTIL_IDENT "Lavu" AV_STRINGIFY(LIBAVUTIL_VERSION)
95 
96 /**
97  * @defgroup lavu_depr_guards Deprecation Guards
98  * FF_API_* defines may be placed below to indicate public API that will be
99  * dropped at a future version bump. The defines themselves are not part of
100  * the public API and may change, break or disappear at any time.
101  *
102  * @note, when bumping the major version it is recommended to manually
103  * disable each FF_API_* in its own commit instead of disabling them all
104  * at once through the bump. This improves the git bisect-ability of the change.
105  *
106  * @{
107  */
108 
109 #ifndef FF_API_VDPAU
110 #define FF_API_VDPAU (LIBAVUTIL_VERSION_MAJOR < 56)
111 #endif
112 #ifndef FF_API_XVMC
113 #define FF_API_XVMC (LIBAVUTIL_VERSION_MAJOR < 56)
114 #endif
115 #ifndef FF_API_OPT_TYPE_METADATA
116 #define FF_API_OPT_TYPE_METADATA (LIBAVUTIL_VERSION_MAJOR < 56)
117 #endif
118 #ifndef FF_API_DLOG
119 #define FF_API_DLOG (LIBAVUTIL_VERSION_MAJOR < 56)
120 #endif
121 #ifndef FF_API_VAAPI
122 #define FF_API_VAAPI (LIBAVUTIL_VERSION_MAJOR < 56)
123 #endif
124 #ifndef FF_API_FRAME_QP
125 #define FF_API_FRAME_QP (LIBAVUTIL_VERSION_MAJOR < 56)
126 #endif
127 #ifndef FF_API_PLUS1_MINUS1
128 #define FF_API_PLUS1_MINUS1 (LIBAVUTIL_VERSION_MAJOR < 56)
129 #endif
130 #ifndef FF_API_ERROR_FRAME
131 #define FF_API_ERROR_FRAME (LIBAVUTIL_VERSION_MAJOR < 56)
132 #endif
133 #ifndef FF_API_CRC_BIG_TABLE
134 #define FF_API_CRC_BIG_TABLE (LIBAVUTIL_VERSION_MAJOR < 56)
135 #endif
136 #ifndef FF_API_PKT_PTS
137 #define FF_API_PKT_PTS (LIBAVUTIL_VERSION_MAJOR < 56)
138 #endif
139 #ifndef FF_API_CRYPTO_SIZE_T
140 #define FF_API_CRYPTO_SIZE_T (LIBAVUTIL_VERSION_MAJOR < 56)
141 #endif
142 
143 
144 /**
145  * @}
146  * @}
147  */
148 
149 #endif /* AVUTIL_VERSION_H */
Utility Preprocessor macros.