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ffmpeg / libavutil / mem.h @ 5b21bdab

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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 FFMPEG_MEM_H
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#define FFMPEG_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 bytes 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 explicitly 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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 * Duplicate 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 be allocated.
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 */
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char *av_strdup(const char *s);
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/**
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 * Free memory and set 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 /* FFMPEG_MEM_H */