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authorFulup Ar Foll <fulup@iot.bzh>2017-11-30 14:36:55 +0100
committerFulup Ar Foll <fulup@iot.bzh>2017-11-30 14:36:55 +0100
commit37bd97c96ac79206518e95abc34933bd8b0f6369 (patch)
treea4302928adfa5d42a1cb892648c4dcac23027b7a /alsa-binding
parent720e487cab65588faf43907b10dd36266b0779a9 (diff)
Change initial volume to be in % in place of absolute values
Signed-off-by: Fulup Ar Foll <fulup@iot.bzh>
Diffstat (limited to 'alsa-binding')
-rw-r--r--alsa-binding/Alsa-AddCtl.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/alsa-binding/Alsa-AddCtl.c b/alsa-binding/Alsa-AddCtl.c
index 82a6dac..a1da706 100644
--- a/alsa-binding/Alsa-AddCtl.c
+++ b/alsa-binding/Alsa-AddCtl.c
@@ -25,6 +25,7 @@
#include <alsa/sound/tlv.h>
#include <systemd/sd-event.h>
#include <sys/ioctl.h>
+#include <math.h>
#include "Alsa-ApiHat.h"
@@ -299,7 +300,17 @@ UpdateDefaultVal:
// Set Value to default
snd_ctl_elem_value_alloca(&elemValue);
for (int idx = 0; idx < snd_ctl_elem_info_get_count(elemInfo); idx++) {
- snd_ctl_elem_value_set_integer(elemValue, idx, ctlValue);
+
+ // initial default value should be a percentage for integer
+ if (snd_ctl_elem_info_get_type(elemInfo) == SND_CTL_ELEM_TYPE_INTEGER) {
+ double min = (double)snd_ctl_elem_info_get_min(elemInfo);
+ double max = (double)snd_ctl_elem_info_get_max(elemInfo);
+ double normValue = ceil((ctlValue) * (max - min) * 0.01 + min);
+ snd_ctl_elem_value_set_integer(elemValue, idx, (int)normValue);
+
+ } else {
+ snd_ctl_elem_value_set_integer(elemValue, idx, ctlValue);
+ }
}
// write default values in newly created control