c9d66562af
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10479 a1c6a512-1295-4272-9138-f99709370657
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
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* alloc.c
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* Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
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* Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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* See http://libmpeg2.sourceforge.net/ for updates.
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*
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* mpeg2dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpeg2dec 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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 "plugin.h"
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#include "mpeg2.h"
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extern struct plugin_api* rb;
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long mem_ptr;
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long bufsize;
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unsigned char* mallocbuf;
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void mpeg2_alloc_init(unsigned char* buf, int mallocsize)
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{
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mem_ptr = 0;
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bufsize = mallocsize;
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mallocbuf = buf;
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return;
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}
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void * mpeg2_malloc (unsigned size, mpeg2_alloc_t reason)
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{
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void* x;
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(void)reason;
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if (mem_ptr + (long)size > bufsize) {
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DEBUGF("OUT OF MEMORY\n");
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return NULL;
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}
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x=&mallocbuf[mem_ptr];
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mem_ptr+=(size+3)&~3; /* Keep memory 32-bit aligned */
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return(x);
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}
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void mpeg2_free(void* ptr) {
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(void)ptr;
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}
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/* gcc may want to use memcpy before rb is initialised, so here's a trivial
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implementation */
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void *memcpy(void *dest, const void *src, size_t n) {
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size_t i;
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char* d=(char*)dest;
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char* s=(char*)src;
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for (i=0;i<n;i++)
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d[i]=s[i];
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return dest;
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}
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