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/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file mem.h
* Memory handling functions.
*/
#ifndef AV_MEM_H
#define AV_MEM_H
#ifdef __GNUC__
#define DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
#else
#define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v
#endif
/**
* Memory allocation of size byte with alignment suitable for all
* memory accesses (including vectors if available on the
* CPU). av_malloc(0) must return a non NULL pointer.
*/
void *av_malloc(unsigned int size);
/**
* av_realloc semantics (same as glibc): if ptr is NULL and size > 0,
* identical to malloc(size). If size is zero, it is identical to
* free(ptr) and NULL is returned.
*/
void *av_realloc(void *ptr, unsigned int size);
/**
* Free memory which has been allocated with av_malloc(z)() or av_realloc().
* NOTE: ptr = NULL is explicetly allowed
* Note2: it is recommended that you use av_freep() instead
*/
void av_free(void *ptr);
void *av_mallocz(unsigned int size);
/**
* Duplicates the string \p s.
* @param s String to be duplicated.
* @return Pointer to a newly allocated string containing a
* copy of \p s or NULL if it cannot allocate it.
*/
char *av_strdup(const char *s);
/**
* Frees memory and sets the pointer to NULL.
* @param ptr pointer to the pointer which should be freed
*/
void av_freep(void *ptr);
#endif /* AV_MEM_H */
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