FFmpeg
macros.h
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg 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 GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 /**
20  * @file
21  * @ingroup lavu
22  * Utility Preprocessor macros
23  */
24 
25 #ifndef AVUTIL_MACROS_H
26 #define AVUTIL_MACROS_H
27 
28 /**
29  * @addtogroup preproc_misc Preprocessor String Macros
30  *
31  * String manipulation macros
32  *
33  * @{
34  */
35 
36 #define AV_STRINGIFY(s) AV_TOSTRING(s)
37 #define AV_TOSTRING(s) #s
38 
39 #define AV_GLUE(a, b) a ## b
40 #define AV_JOIN(a, b) AV_GLUE(a, b)
41 
42 /**
43  * @}
44  */
45 
46 #define AV_PRAGMA(s) _Pragma(#s)
47 
48 #define FFALIGN(x, a) (((x)+(a)-1)&~((a)-1))
49 
50 #endif /* AVUTIL_MACROS_H */