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