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
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sched.h>
#include <errno.h>
#include <getopt.h>
#include "../include/mixer_ordinary.h"
#include <sys/time.h>
#include <math.h>
static void help(void)
{
printf(
"Usage: omixer [OPTION]...\n\n"
"-h,--help help\n"
"-P,--pname playback PCM device\n"
"-C,--cname capture PCM device\n"
);
}
int main(int argc, char *argv[])
{
struct option long_option[] =
{
{"help", 0, NULL, 'h'},
{"pname", 1, NULL, 'P'},
{"cname", 1, NULL, 'C'},
{NULL, 0, NULL, 0},
};
int err, morehelp, result = EXIT_SUCCESS;
char *pname = "default", *cname = "default";
snd_pcm_t *phandle = NULL, *chandle = NULL;
sndo_mixer_t *handle;
morehelp = 0;
while (1) {
int c;
if ((c = getopt_long(argc, argv, "hP:C:", long_option, NULL)) < 0)
break;
switch (c) {
case 'h':
morehelp++;
break;
case 'P':
pname = strdup(optarg);
break;
case 'C':
cname = strdup(optarg);
break;
}
}
if (morehelp) {
help();
return 0;
}
if (strcmp(pname, "-")) {
err = snd_pcm_open(&phandle, pname, SND_PCM_STREAM_PLAYBACK, 0);
if (err < 0) {
fprintf(stderr, "Playback PCM open error: %s\n", snd_strerror(err));
result = EXIT_FAILURE;
goto __end;
}
}
if (strcmp(cname, "-")) {
err = snd_pcm_open(&chandle, cname, SND_PCM_STREAM_CAPTURE, 0);
if (err < 0) {
if (phandle)
snd_pcm_close(phandle);
fprintf(stderr, "Capture PCM open error: %s\n", snd_strerror(err));
result = EXIT_FAILURE;
goto __end;
}
}
err = sndo_mixer_open_pcm(&handle, phandle, chandle, NULL);
if (err < 0) {
fprintf(stderr, "mixer open error: %s\n", snd_strerror(err));
result = EXIT_FAILURE;
} else {
sndo_mixer_close(handle);
}
__end:
if (chandle)
snd_pcm_close(chandle);
if (phandle)
snd_pcm_close(phandle);
snd_config_update_free_global(); /* to keep valgrind happy */
return result;
}
|
