1 /***
2 This file is part of PulseAudio.
3
4 Copyright 2009 Lennart Poettering
5
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 published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
10
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 General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18 ***/
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include <string.h>
25
26 #include <pulse/xmalloc.h>
27
28 #include "bitset.h"
29
pa_bitset_set(pa_bitset_t * b,unsigned k,bool v)30 void pa_bitset_set(pa_bitset_t *b, unsigned k, bool v) {
31 pa_assert(b);
32
33 if (v)
34 b[k >> 5] |= 1 << (k & 31);
35 else
36 b[k >> 5] &= ~((uint32_t) (1 << (k & 31)));
37 }
38
pa_bitset_get(const pa_bitset_t * b,unsigned k)39 bool pa_bitset_get(const pa_bitset_t *b, unsigned k) {
40 return !!(b[k >> 5] & (1 << (k & 31)));
41 }
42
pa_bitset_equals(const pa_bitset_t * b,unsigned n,...)43 bool pa_bitset_equals(const pa_bitset_t *b, unsigned n, ...) {
44 va_list ap;
45 pa_bitset_t *a;
46 bool equal;
47
48 a = pa_xnew0(pa_bitset_t, PA_BITSET_ELEMENTS(n));
49
50 va_start(ap, n);
51 for (;;) {
52 int j = va_arg(ap, int);
53
54 if (j < 0)
55 break;
56
57 pa_bitset_set(a, j, true);
58 }
59 va_end(ap);
60
61 equal = memcmp(a, b, PA_BITSET_SIZE(n)) == 0;
62 pa_xfree(a);
63
64 return equal;
65 }
66