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Clean up alsa settings information output -- make more precise too.

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This commit is contained in:
Mike Brady
2016-04-01 16:27:06 +01:00
parent 890cdd68dd
commit 0d06016cb8
1 changed files with 79 additions and 41 deletions
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audio_alsa.c
+79 -41
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@@ -467,7 +467,12 @@ int open_alsa_device(void) {
alsa_characteristics_already_listed=1;
int rc;
snd_pcm_access_t access_type;
snd_pcm_format_t format_type;
snd_pcm_subformat_t subformat_type;
unsigned int val, val2;
unsigned int uval, uval2;
int sval;
int dir;
snd_pcm_uframes_t frames;
@@ -481,57 +486,90 @@ int open_alsa_device(void) {
// alsa_out_dev);
// }
debug(1,"alsa device parameters:");
snd_pcm_hw_params_get_access(alsa_params,
(snd_pcm_access_t *) &val);
debug(1,"access type = %s",
snd_pcm_access_name((snd_pcm_access_t)val));
snd_pcm_hw_params_get_access(alsa_params,&access_type);
debug(1," access type = %s", snd_pcm_access_name(access_type));
snd_pcm_hw_params_get_format(alsa_params,(snd_pcm_format_t*)&val);
debug(1,"format = '%s' (%s)",
snd_pcm_format_name((snd_pcm_format_t)val),
snd_pcm_format_description(
(snd_pcm_format_t)val));
snd_pcm_hw_params_get_format(alsa_params,&format_type);
debug(1," format = '%s' (%s)",snd_pcm_format_name(format_type),snd_pcm_format_description(format_type));
snd_pcm_hw_params_get_subformat(alsa_params,
(snd_pcm_subformat_t *)&val);
debug(1,"subformat = '%s' (%s)",
snd_pcm_subformat_name((snd_pcm_subformat_t)val),
snd_pcm_subformat_description(
(snd_pcm_subformat_t)val));
snd_pcm_hw_params_get_subformat(alsa_params,&subformat_type);
debug(1," subformat = '%s' (%s)",snd_pcm_subformat_name(subformat_type),snd_pcm_subformat_description(subformat_type));
snd_pcm_hw_params_get_channels(alsa_params, &val);
debug(1,"channels = %d", val);
snd_pcm_hw_params_get_channels(alsa_params, &uval);
debug(1," number of channels = %u", uval);
snd_pcm_hw_params_get_rate(alsa_params, &val, &dir);
debug(1,"rate = %d bps", val);
sval = snd_pcm_hw_params_get_sbits(alsa_params);
debug(1," number of significant bits = %d", sval);
snd_pcm_hw_params_get_period_time(alsa_params,
&val, &dir);
debug(1,"period time = %d us", val);
snd_pcm_hw_params_get_rate_numden(alsa_params,&uval, &uval2);
debug(1," rate = %.3f bps (i.e. %u/%u).", uval, uval2, ((double)uval)/uval2);
snd_pcm_hw_params_get_period_size(alsa_params,
&frames, &dir);
debug(1,"period size = %d frames", (int)frames);
snd_pcm_hw_params_get_period_time(alsa_params,&uval, &dir);
switch (dir) {
case -1:
debug(1," period_time = %u us (nominal) -- the exact time is a fraction shorter.", uval);
break;
case 0:
debug(1," period_time = %u us.", uval);
break;
case 1:
debug(1," period_time = %u us (nominal) -- the exact time is a fraction longer.", uval);
break;
}
snd_pcm_hw_params_get_buffer_time(alsa_params,
&val, &dir);
debug(1,"buffer time = %d us", val);
snd_pcm_hw_params_get_period_size(alsa_params,&frames, &dir);
switch (dir) {
case -1:
debug(1," period_size = %lu frames (nominal) -- the exact size is a fraction smaller.", frames);
break;
case 0:
debug(1," period_size = %lu frames.", frames);
break;
case 1:
debug(1," period_size = %lu frames (nominal) -- exact size is a fraction greater.", frames);
break;
}
snd_pcm_hw_params_get_buffer_size(alsa_params,
(snd_pcm_uframes_t *) &val);
debug(1,"buffer size = %d frames", val);
snd_pcm_hw_params_get_periods(alsa_params, &val, &dir);
debug(1,"periods per buffer = %d frames", val);
snd_pcm_hw_params_get_rate_numden(alsa_params,
&val, &val2);
debug(1,"exact rate = %d/%d bps", val, val2);
val = snd_pcm_hw_params_get_sbits(alsa_params);
debug(1,"significant bits = %d", val);
snd_pcm_hw_params_get_buffer_time(alsa_params,&uval, &dir);
switch (dir) {
case -1:
debug(1," buffer_time = %u us (nominal) -- the exact time is a fraction shorter.", uval);
break;
case 0:
debug(1," buffer_time = %u us.", uval);
break;
case 1:
debug(1," buffer_time = %u us (nominal) -- the exact time is a fraction longer.", uval);
break;
}
snd_pcm_hw_params_get_buffer_size(alsa_params,&frames);
switch (dir) {
case -1:
debug(1," buffer_size = %lu frames (nominal) -- the exact size is a fraction smaller.", frames);
break;
case 0:
debug(1," buffer_size = %lu frames.", frames);
break;
case 1:
debug(1," buffer_size = %lu frames (nominal) -- the exact size is fraction greater.", frames);
break;
}
snd_pcm_hw_params_get_periods(alsa_params, &uval, &dir);
switch (dir) {
case -1:
debug(1," periods_per_buffer = %u (nominal) -- the exact number is a fraction less.", uval);
break;
case 0:
debug(1," periods_per_buffer = %u.", uval);
break;
case 1:
debug(1," periods_per_buffer = %u (nominal) -- the exact number is a fraction more.", uval);
break;
}
}
return (0);