| 1 | /*
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| 2 | * copyright (c) 2006 Michael Niedermayer <[email protected]>
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| 3 | *
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| 4 | * This file is part of FFmpeg.
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| 5 | *
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| 6 | * FFmpeg is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU Lesser General Public
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| 8 | * License as published by the Free Software Foundation; either
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| 9 | * version 2.1 of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * FFmpeg is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 14 | * Lesser General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU Lesser General Public
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| 17 | * License along with FFmpeg; if not, write to the Free Software
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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| 19 | */
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| 20 |
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| 21 | /**
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| 22 | * @file mem.h
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| 23 | * Memory handling functions.
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| 24 | */
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| 25 |
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| 26 | #ifndef AV_MEM_H
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| 27 | #define AV_MEM_H
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| 28 |
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| 29 | #ifdef __GNUC__
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| 30 | #define DECLARE_ALIGNED(n,t,v) t v __attribute__ ((aligned (n)))
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| 31 | #else
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| 32 | #define DECLARE_ALIGNED(n,t,v) __declspec(align(n)) t v
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| 33 | #endif
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| 34 |
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| 35 | /**
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| 36 | * Memory allocation of size byte with alignment suitable for all
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| 37 | * memory accesses (including vectors if available on the
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| 38 | * CPU). av_malloc(0) must return a non NULL pointer.
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| 39 | */
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| 40 | void *av_malloc(unsigned int size);
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| 41 |
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| 42 | /**
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| 43 | * av_realloc semantics (same as glibc): if ptr is NULL and size > 0,
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| 44 | * identical to malloc(size). If size is zero, it is identical to
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| 45 | * free(ptr) and NULL is returned.
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| 46 | */
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| 47 | void *av_realloc(void *ptr, unsigned int size);
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| 48 |
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| 49 | /**
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| 50 | * Free memory which has been allocated with av_malloc(z)() or av_realloc().
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| 51 | * NOTE: ptr = NULL is explicetly allowed
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| 52 | * Note2: it is recommended that you use av_freep() instead
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| 53 | */
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| 54 | void av_free(void *ptr);
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| 55 |
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| 56 | void *av_mallocz(unsigned int size);
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| 57 | char *av_strdup(const char *s);
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| 58 |
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| 59 | /**
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| 60 | * Frees memory and sets the pointer to NULL.
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| 61 | * @param ptr pointer to the pointer which should be freed
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| 62 | */
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| 63 | void av_freep(void *ptr);
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| 64 |
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| 65 | #endif /* AV_MEM_H */
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