mem.h
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1 /*
2  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of Libav.
5  *
6  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
26 #ifndef AVUTIL_MEM_H
27 #define AVUTIL_MEM_H
28 
29 #include "attributes.h"
30 #include "avutil.h"
31 
38 #if defined(__ICC) && _ICC < 1200 || defined(__SUNPRO_C)
39  #define DECLARE_ALIGNED(n,t,v) t __attribute__ ((aligned (n))) v
40  #define DECLARE_ASM_CONST(n,t,v) const t __attribute__ ((aligned (n))) v
41 #elif defined(__TI_COMPILER_VERSION__)
42  #define DECLARE_ALIGNED(n,t,v) \
43  AV_PRAGMA(DATA_ALIGN(v,n)) \
44  t __attribute__((aligned(n))) v
45  #define DECLARE_ASM_CONST(n,t,v) \
46  AV_PRAGMA(DATA_ALIGN(v,n)) \
47  static const t __attribute__((aligned(n))) v
48 #elif defined(__GNUC__)
49  #define DECLARE_ALIGNED(n,t,v) t __attribute__ ((aligned (n))) v
50  #define DECLARE_ASM_CONST(n,t,v) static const t av_used __attribute__ ((aligned (n))) v
51 #elif defined(_MSC_VER)
52  #define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v
53  #define DECLARE_ASM_CONST(n,t,v) __declspec(align(n)) static const t v
54 #else
55  #define DECLARE_ALIGNED(n,t,v) t v
56  #define DECLARE_ASM_CONST(n,t,v) static const t v
57 #endif
58 
59 #if AV_GCC_VERSION_AT_LEAST(3,1)
60  #define av_malloc_attrib __attribute__((__malloc__))
61 #else
62  #define av_malloc_attrib
63 #endif
64 
65 #if AV_GCC_VERSION_AT_LEAST(4,3)
66  #define av_alloc_size(n) __attribute__((alloc_size(n)))
67 #else
68  #define av_alloc_size(n)
69 #endif
70 
80 
93 void *av_realloc(void *ptr, size_t size) av_alloc_size(2);
94 
103 void av_free(void *ptr);
104 
114 
121 char *av_strdup(const char *s) av_malloc_attrib;
122 
130 void av_freep(void *ptr);
131 
136 #endif /* AVUTIL_MEM_H */