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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
polypaudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include "memchunk.h"
#include "xmalloc.h"
void pa_memchunk_make_writable(struct pa_memchunk *c, struct pa_memblock_stat *s, size_t min) {
struct pa_memblock *n;
size_t l;
assert(c && c->memblock && c->memblock->ref >= 1);
if (c->memblock->ref == 1 && !c->memblock->read_only && c->memblock->length >= c->index+min)
return;
l = c->length;
if (l < min)
l = min;
n = pa_memblock_new(l, s);
memcpy(n->data, (uint8_t*) c->memblock->data + c->index, c->length);
pa_memblock_unref(c->memblock);
c->memblock = n;
c->index = 0;
}
void pa_memchunk_reset(struct pa_memchunk *c) {
assert(c);
c->memblock = NULL;
c->length = c->index = 0;
}
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