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speaker-test: Use smaller periods in the default settings

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We would like to break the speaker test using Ctrl-C (SIGINT) more early.
In the default settings, the periods are too big and the responsivity
of the speaker-test utility may be several seconds.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2024-01-24 18:59:31 +01:00
parent e523020eb8
commit b082be1fbf
1 changed files with 9 additions and 4 deletions
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13
speaker-test/speaker-test.c
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@ -51,6 +51,7 @@
#include <getopt.h>
#include <inttypes.h>
#include <ctype.h>
#include <limits.h>
#include "bswap.h"
#include <signal.h>
@ -105,7 +106,7 @@ static unsigned int rate = 48000; /* stream rate */
static unsigned int channels = 1; /* count of channels */
static unsigned int speaker = 0; /* count of channels */
static unsigned int buffer_time = 0; /* ring buffer length in us */
static unsigned int period_time = 0; /* period time in us */
static unsigned int period_time = UINT_MAX; /* period time in us */
static unsigned int nperiods = 4; /* number of periods */
static double freq = 440.0; /* sinusoidal wave frequency in Hz */
static int test_type = TEST_PINK_NOISE; /* Test type. 1 = noise, 2 = sine wave */
@ -508,11 +509,15 @@ static int set_hwparams(snd_pcm_t *handle, snd_pcm_hw_params_t *params, snd_pcm_
printf(_("Buffer size range from %lu to %lu\n"),buffer_size_min, buffer_size_max);
printf(_("Period size range from %lu to %lu\n"),period_size_min, period_size_max);
if (period_time > 0) {
printf(_("Requested period time %u us\n"), period_time);
err = snd_pcm_hw_params_set_period_time_near(handle, params, &period_time, NULL);
unsigned int tmp = period_time;
if (period_time > 0 && period_time < UINT_MAX)
printf(_("Requested period time %u us\n"), period_time);
else
tmp = 250000; /* 0.25 second */
err = snd_pcm_hw_params_set_period_time_near(handle, params, &tmp, NULL);
if (err < 0) {
fprintf(stderr, _("Unable to set period time %u us for playback: %s\n"),
period_time, snd_strerror(err));
tmp, snd_strerror(err));
return err;
}
}