mirror of https://git.ffmpeg.org/ffmpeg.git
61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
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/*
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* default memory allocator for libavcodec
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* Copyright (c) 2002 Fabrice Bellard.
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*
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* This library 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 of the License, or (at your option) any later version.
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*
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* This library 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 this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "avcodec.h"
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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/* you can redefine av_malloc and av_free in your project to use your
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memory allocator. You do not need to suppress this file because the
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linker will do it automatically */
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/* memory alloc */
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void *av_malloc(int size)
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{
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void *ptr;
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#if defined ( ARCH_X86 ) && defined ( HAVE_MEMALIGN ) && 0
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ptr = memalign(64,size);
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/* Why 64?
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Indeed, we should align it:
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on 4 for 386
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on 16 for 486
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on 32 for 586, PPro - k6-III
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on 64 for K7 (maybe for P3 too).
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Because L1 and L2 caches are aligned on those values.
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But I don't want to code such logic here!
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*/
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#else
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ptr = malloc(size);
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#endif
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if (!ptr)
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return NULL;
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/* NOTE: this memset should not be present */
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memset(ptr, 0, size);
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return ptr;
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}
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/* NOTE: ptr = NULL is explicetly allowed */
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void av_free(void *ptr)
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{
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/* XXX: this test should not be needed on most libcs */
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if (ptr)
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free(ptr);
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}
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