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Added arguments

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This commit is contained in:
Jaroslav Kysela 2001-08-10 16:44:08 +00:00
parent 7f498ce393
commit 36a2810081
1 changed files with 93 additions and 3 deletions
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96
test/latency.c
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@ -3,6 +3,7 @@
#include <string.h>
#include <sched.h>
#include <errno.h>
#include <getopt.h>
#include "../include/asoundlib.h"
#include <sys/time.h>
@ -298,16 +299,100 @@ long writebuf(snd_pcm_t *handle, char *buf, long len, size_t *frames)
return 0;
}
int main(void)
void help(void)
{
int k;
printf("\
Usage: latency [OPTION]... [FILE]...
-h,--help help
-P,--pdevice playback device
-C,--cdevice capture device
-m,--min minimum latency in frames
-M,--max maximum latency in frames
-F,--frames frames to transfer
-f,--format sample format
-c,--channels channels
-r,--rate rate
");
printf("Recognized sample formats are:");
for (k = 0; k < SND_PCM_FORMAT_LAST; ++(unsigned long) k) {
const char *s = snd_pcm_format_name(k);
if (s)
printf(" %s", s);
}
printf("\n");
}
int main(int argc, char *argv[])
{
struct option long_option[] =
{
{"help", 0, NULL, 'h'},
{"pdevice", 1, NULL, 'P'},
{"cdevice", 1, NULL, 'C'},
{"min", 1, NULL, 'm'},
{"max", 1, NULL, 'M'},
{"frames", 1, NULL, 'F'},
{"format", 1, NULL, 'f'},
{"channels", 1, NULL, 'c'},
{"rate", 1, NULL, 'r'},
{NULL, 0, NULL, 0},
};
snd_pcm_t *phandle, *chandle;
char *buffer;
int err, latency;
int err, latency, morehelp;
int size, ok;
snd_timestamp_t p_tstamp, c_tstamp;
ssize_t r;
size_t frames_in, frames_out;
morehelp = 0;
while (1) {
int c;
if ((c = getopt_long(argc, argv, "hP:C:m:M:F:f:c:r:", long_option, NULL)) < 0)
break;
switch (c) {
case 'h':
morehelp++;
break;
case 'P':
pdevice = strdup(optarg);
break;
case 'C':
cdevice = strdup(optarg);
break;
case 'm':
err = atoi(optarg);
latency_min = err >= 4 ? err : 4;
if (latency_max < latency_min)
latency_max = latency_min;
break;
case 'M':
err = atoi(optarg);
latency_max = latency_min > err ? latency_min : err;
break;
case 'F':
format = snd_pcm_format_value(optarg);
if (format == SND_PCM_FORMAT_UNKNOWN) {
printf("Unknown format, setting to default S16_LE\n");
format = SND_PCM_FORMAT_S16_LE;
}
break;
case 'c':
err = atoi(optarg);
channels = err >= 1 && err < 1024 ? err : 1;
break;
case 'r':
err = atoi(optarg);
rate = err >= 4000 && err < 200000 ? err : 44100;
break;
}
}
if (morehelp) {
help();
return 0;
}
err = snd_output_stdio_attach(&output, stdout, 0);
if (err < 0) {
printf("Output failed: %s\n", snd_strerror(err));
@ -319,6 +404,12 @@ int main(void)
buffer = malloc((latency_max * snd_pcm_format_width(format) / 8) * 2);
setscheduler();
printf("Playback device is %s\n", pdevice);
printf("Capture device is %s\n", cdevice);
printf("Parameters are %iHz, %s, %i channels\n", rate, snd_pcm_format_name(format), channels);
printf("Loop limit is %li frames, minimum latency = %i, maximum latency = %i\n", loop_limit, latency_min, latency_max);
if ((err = snd_pcm_open(&phandle, pdevice, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK)) < 0) {
printf("Playback open error: %s\n", snd_strerror(err));
return 0;
@ -328,7 +419,6 @@ int main(void)
return 0;
}
printf("Loop limit is %li frames\n", loop_limit);
while (1) {
frames_in = frames_out = 0;
if (setparams(phandle, chandle, &latency) < 0)