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
|
/*
* Copyright 1994-2012 Olivier Girondel
*
* This file is part of lebiniou.
*
* lebiniou is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* lebiniou 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with lebiniou. If not, see <http://www.gnu.org/licenses/>.
*/
#include "context.h"
u_long id = 945287542;
u_long options = BEQ_THREAD;
#define INSIZE 256
#define FACT 0.40
#define DEVICE "/dev/urandom"
static short *urndbuff;
static int urndfd;
static struct timespec req;
void
create(Context_t *ctx)
{
req.tv_sec = 0;
req.tv_nsec = 100000000;
urndfd = open(DEVICE, O_RDONLY);
if (urndfd == -1) {
fprintf(stderr, "Unable to open `%s'\n", DEVICE);
exit (1);
}
urndbuff = xcalloc(INSIZE * 2, sizeof(short));
ctx->input = Input_new(INSIZE);
}
void
destroy(Context_t *ctx)
{
Input_delete(ctx->input);
close(urndfd);
xfree(urndbuff);
}
void *
jthread(void *args)
{
Context_t *ctx = (Context_t *)args;
while (ctx->running) {
int n;
n = read(urndfd, (void *)urndbuff, INSIZE * 2 * sizeof(short));
if (!ctx->input->mute && (n != -1)) {
int m, idx;
for (m = 0, idx = 0; (m < n) && (idx < INSIZE); idx++) {
ctx->input->data[A_LEFT][idx] = FACT * (float)((float)urndbuff[m++] / (float)-SHRT_MIN);
ctx->input->data[A_RIGHT][idx] = FACT * (float)((float)urndbuff[m++] / (float)-SHRT_MIN);
}
Input_set(ctx->input, A_STEREO);
}
nanosleep(&req, NULL);
}
return NULL;
}
|
