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Use mixer's mute switch if possible

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ashthespy 2020-03-06 20:56:01 +01:00 committed by Sasha Hilton
parent 46328810cb
commit 9e7180feb4
1 changed files with 22 additions and 1 deletions
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23
playback/src/mixer/alsamixer.rs
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@ -14,6 +14,7 @@ struct AlsaMixerVolumeParams {
range: f64,
min_db: alsa::mixer::MilliBel,
max_db: alsa::mixer::MilliBel,
has_switch: bool,
}
#[derive(Clone)]
@ -47,7 +48,10 @@ impl AlsaMixer {
let hw_mix = selem
.get_playback_vol_db(alsa::mixer::SelemChannelId::mono())
.is_ok();
let has_switch = selem.has_playback_switch();
if min_db != alsa::mixer::MilliBel(SND_CTL_TLV_DB_GAIN_MUTE) {
warn!("Alsa min-db is not SND_CTL_TLV_DB_GAIN_MUTE!!");
}
info!(
"Alsa Mixer info min: {} ({:?}[dB]) -- max: {} ({:?}[dB]) HW: {:?}",
min, min_db, max, max_db, hw_mix
@ -75,6 +79,7 @@ impl AlsaMixer {
range: (max - min) as f64,
min_db: min_db,
max_db: max_db,
has_switch: has_switch,
},
})
}
@ -96,6 +101,22 @@ impl AlsaMixer {
match set_volume {
Some(vol) => {
if self.params.has_switch {
let is_muted = selem
.get_playback_switch(alsa::mixer::SelemChannelId::mono())
.map(|b| b == 0)
.unwrap_or(false);
if vol == 0 {
debug!("Toggling mute::True");
selem.set_playback_switch_all(0).expect("Can't switch mute");
return Ok(vol);
} else if is_muted {
debug!("Toggling mute::False");
selem.set_playback_switch_all(1).expect("Can't reset mute");
}
}
if self.config.mapped_volume {
// Cubic mapping ala alsamixer
// https://linux.die.net/man/1/alsamixer