Dne 07. 11. 19 v 2:58 Curtis Malainey napsal(a):
Some userspace audio servers might default to software volume, this
allows the ucm to force its behaviour
Signed-off-by: Curtis Malainey <cujomalainey@xxxxxxxxxxxx>
---
include/use-case.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/use-case.h b/include/use-case.h
index 05628303..1aeaf9d4 100644
--- a/include/use-case.h
+++ b/include/use-case.h
@@ -334,6 +334,8 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
* - This is used on platform where reported buffer level is not accurate.
* E.g. "512", which holds 512 samples in device buffer. Note: this will
* increase latency.
+ * - DisableSoftwareVolume
+ * - Set to "1" to force userspace to use hardware volume controls
*/
int snd_use_case_get(snd_use_case_mgr_t *uc_mgr,
const char *identifier,
My understanding is that if the hardware volume controls are defined in UCM,
then the UCM user (audio server) should use them. Otherwise, the software
volume control should be applied. I don't see the reason to have this info
doubled.
Jaroslav
--
Jaroslav Kysela <perex@xxxxxxxx>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
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