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alsa-util/sink/source: Add infrastructure for supported sample formats

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There has been a function to get supported sample rates from alsa and
an array for it in userdata of each module-alsa-sink/source. Similarly,
this patch adds a function to get supported sample formats(bit depth)
from alsa and an array for it to each userdata of the modules.

Signed-off-by: Sangchul Lee <sc11.lee@samsung.com>
This commit is contained in:
Sangchul Lee 2018-06-29 04:57:01 +09:00 • committed by Tanu Kaskinen
parent 7c066fd886
commit 9d7055004e
4 changed files with 99 additions and 0 deletions
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10
src/modules/alsa/alsa-source.c
View file

@ -99,6 +99,7 @@ struct userdata {
pa_cvolume hardware_volume;
pa_sample_format_t *supported_formats;
unsigned int *rates;
size_t
@ -2025,6 +2026,12 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
pa_log_info("Disabling latency range changes on overrun");
}
u->supported_formats = pa_alsa_get_supported_formats(u->pcm_handle, ss.format);
if (!u->supported_formats) {
pa_log_error("Failed to find any supported sample formats.");
goto fail;
}
u->rates = pa_alsa_get_supported_rates(u->pcm_handle, ss.rate);
if (!u->rates) {
pa_log_error("Failed to find any supported sample rates.");
@ -2259,6 +2266,9 @@ static void userdata_free(struct userdata *u) {
if (u->smoother)
pa_smoother_free(u->smoother);
if (u->supported_formats)
pa_xfree(u->supported_formats);
if (u->rates)
pa_xfree(u->rates);