1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/* $Id$ */
/***
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 <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <pulse/gccmacro.h>
#include <pulsecore/core-util.h>
#include <pulsecore/mcalign.h>
/* A simple program for testing pa_mcalign */
int main(PA_GCC_UNUSED int argc, PA_GCC_UNUSED char *argv[]) {
pa_mempool *p;
pa_mcalign *a;
pa_memchunk c;
p = pa_mempool_new(0);
a = pa_mcalign_new(11);
pa_memchunk_reset(&c);
srand(time(NULL));
for (;;) {
ssize_t r;
size_t l;
if (!c.memblock) {
c.memblock = pa_memblock_new(p, 2048);
c.index = c.length = 0;
}
assert(c.index < pa_memblock_get_length(c.memblock));
l = pa_memblock_get_length(c.memblock) - c.index;
l = l <= 1 ? l : rand() % (l-1) +1 ;
p = pa_memblock_acquire(c.memblock);
if ((r = read(STDIN_FILENO, (uint8_t*) p + c.index, l)) <= 0) {
pa_memblock_release(c.memblock);
fprintf(stderr, "read() failed: %s\n", r < 0 ? strerror(errno) : "EOF");
break;
}
pa_memblock_release(c.memblock);
c.length = r;
pa_mcalign_push(a, &c);
fprintf(stderr, "Read %ld bytes\n", (long)r);
c.index += r;
if (c.index >= pa_memblock_get_length(c.memblock)) {
pa_memblock_unref(c.memblock);
pa_memchunk_reset(&c);
}
for (;;) {
pa_memchunk t;
if (pa_mcalign_pop(a, &t) < 0)
break;
p = pa_memblock_acquire(t.memblock);
pa_loop_write(STDOUT_FILENO, (uint8_t*) p + t.index, t.length, NULL);
pa_memblock_release(t.memblock);
fprintf(stderr, "Wrote %lu bytes.\n", (unsigned long) t.length);
pa_memblock_unref(t.memblock);
}
}
pa_mcalign_free(a);
if (c.memblock)
pa_memblock_unref(c.memblock);
pa_mempool_free(p);
return 0;
}
|
