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code.delx.au - pulseaudio/blob - src/pulsecore/memchunk.c
4 This file is part of PulseAudio.
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include <pulse/xmalloc.h>
35 void pa_memchunk_make_writable(pa_memchunk
*c
, size_t min
) {
43 if (pa_memblock_is_read_only(c
->memblock
) &&
44 pa_memblock_get_length(c
->memblock
) >= c
->index
+min
)
51 n
= pa_memblock_new(pa_memblock_get_pool(c
->memblock
), l
);
52 tdata
= pa_memblock_acquire(n
);
53 sdata
= pa_memblock_acquire(c
->memblock
);
54 memcpy(tdata
, (uint8_t*) sdata
+ c
->index
, c
->length
);
55 pa_memblock_release(n
);
56 pa_memblock_release(c
->memblock
);
57 pa_memblock_unref(c
->memblock
);
62 void pa_memchunk_reset(pa_memchunk
*c
) {
66 c
->length
= c
->index
= 0;