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/* $Id$ */
/***
This file is part of PulseAudio.
PulseAudio 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.
PulseAudio 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 PulseAudio; 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 <pulse/xmalloc.h>
#include "memchunk.h"
void pa_memchunk_make_writable(pa_memchunk *c, size_t min) {
pa_memblock *n;
size_t l;
void *tdata, *sdata;
assert(c);
assert(c->memblock);
if (pa_memblock_is_read_only(c->memblock) &&
pa_memblock_get_length(c->memblock) >= c->index+min)
return;
l = c->length;
if (l < min)
l = min;
n = pa_memblock_new(pa_memblock_get_pool(c->memblock), l);
tdata = pa_memblock_acquire(n);
sdata = pa_memblock_acquire(c->memblock);
memcpy(tdata, (uint8_t*) sdata + c->index, c->length);
pa_memblock_release(n);
pa_memblock_release(c->memblock);
pa_memblock_unref(c->memblock);
c->memblock = n;
c->index = 0;
}
void pa_memchunk_reset(pa_memchunk *c) {
assert(c);
c->memblock = NULL;
c->length = c->index = 0;
}
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