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dde_bsd: support microphone selection

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Make preferred microphone configurable when a headset is plugged in by
introducing the 'mic_priority' attribute for the <config> node. Values
can be "internal" and "external".
This commit is contained in:
Sebastian Sumpf 2024-12-11 19:20:21 +01:00 committed by Christian Helmuth
parent a9df9fccfd
commit ac5cfb59ea
2 changed files with 21 additions and 1 deletions
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10
repos/dde_bsd/README
View File

@ -74,6 +74,16 @@ Information about the available mixers and settings in general
may be obtained by setting the 'verbose' to 'yes' in the config
node.
When multiple microphones are present (e.g., internal microphone in a notebook
and a headset with a microphone), the preferred microphone can be configured
using the 'mic_priority' attribute in the '<config>' node. Valid values are
"internal" and "external" (default).
! <config mic_priority="internal"/>
The example above tells the driver to prioritize the internal microphone over a
headset.
Examples
========

12
repos/dde_bsd/src/lib/audio/driver.cc
View File

@ -41,6 +41,8 @@ static dev_t const mdev = 0xc0; /* /dev/audioctl */
static bool adev_usuable = false;
/* prioritize mic of headset if plugged in over internal mic */
static bool mic_priority_external = true;
static bool drv_loaded()
{
@ -389,6 +391,11 @@ static void configure_mixer(Genode::Env &env, Mixer &mixer, Genode::Xml_node con
{
using namespace Genode;
typedef String<9> Mic_mode;
Mic_mode mode = config.attribute_value("mic_priority", Mic_mode("external"));
mic_priority_external = (mode == "internal") ? false : true;
config.for_each_sub_node("mixer", [&] (Xml_node node) {
typedef String<32> Field;
@ -615,7 +622,8 @@ extern "C" void notify_record()
extern "C" void notify_hp_sense(int const sense)
{
set_mixer_value(mixer, "record.adc-0:1_source", sense ? "mic2" : "mic");
set_mixer_value(mixer, "record.adc-0:1_source",
sense && mic_priority_external ? "mic2" : "mic");
report_mixer_state(mixer, nullptr);
}
@ -630,6 +638,8 @@ void Audio::update_config(Genode::Env &env, Genode::Xml_node config)
if (mixer.info == nullptr) { return; }
configure_mixer(env, mixer, config);
notify_hp_sense(headphone_plugged() ? 1 : 0);
}