speaker-test: Use smaller periods in the default settings

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>

diff --git a/speaker-test/speaker-test.c b/speaker-test/speaker-test.c
index 1121401c3fd601fc76582b0b794f7c52e4965521..d3fec2b3adc96214da81c8aa1ba47185b8533ff2 100644 (file)
--- a/speaker-test/speaker-test.c
+++ b/speaker-test/speaker-test.c
@@ -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;
     }
   }