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libavutil/mem.h

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00001 /*
00002  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00026 #ifndef AVUTIL_MEM_H
00027 #define AVUTIL_MEM_H
00028 
00029 #include "attributes.h"
00030 
00031 #if defined(__ICC) || defined(__SUNPRO_C)
00032     #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
00033     #define DECLARE_ASM_CONST(n,t,v)    const t __attribute__ ((aligned (n))) v
00034 #elif defined(__TI_COMPILER_VERSION__)
00035     #define DECLARE_ALIGNED(n,t,v)                      \
00036         AV_PRAGMA(DATA_ALIGN(v,n))                      \
00037         t __attribute__((aligned(n))) v
00038     #define DECLARE_ASM_CONST(n,t,v)                    \
00039         AV_PRAGMA(DATA_ALIGN(v,n))                      \
00040         static const t __attribute__((aligned(n))) v
00041 #elif defined(__GNUC__)
00042     #define DECLARE_ALIGNED(n,t,v)      t __attribute__ ((aligned (n))) v
00043     #define DECLARE_ASM_CONST(n,t,v)    static const t attribute_used __attribute__ ((aligned (n))) v
00044 #elif defined(_MSC_VER)
00045     #define DECLARE_ALIGNED(n,t,v)      __declspec(align(n)) t v
00046     #define DECLARE_ASM_CONST(n,t,v)    __declspec(align(n)) static const t v
00047 #else
00048     #define DECLARE_ALIGNED(n,t,v)      t v
00049     #define DECLARE_ASM_CONST(n,t,v)    static const t v
00050 #endif
00051 
00052 #if AV_GCC_VERSION_AT_LEAST(3,1)
00053     #define av_malloc_attrib __attribute__((__malloc__))
00054 #else
00055     #define av_malloc_attrib
00056 #endif
00057 
00058 #if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,3)
00059     #define av_alloc_size(n) __attribute__((alloc_size(n)))
00060 #else
00061     #define av_alloc_size(n)
00062 #endif
00063 
00072 void *av_malloc(unsigned int size) av_malloc_attrib av_alloc_size(1);
00073 
00086 void *av_realloc(void *ptr, unsigned int size) av_alloc_size(2);
00087 
00096 void av_free(void *ptr);
00097 
00106 void *av_mallocz(unsigned int size) av_malloc_attrib av_alloc_size(1);
00107 
00114 char *av_strdup(const char *s) av_malloc_attrib;
00115 
00123 void av_freep(void *ptr);
00124 
00125 #endif /* AVUTIL_MEM_H */

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