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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