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dde_bsd: update audio driver to OpenBSD 5.9

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In addition to updating the contrib sources the driver now uses the
new Component API and will report the internal mixer state.

Reporting of the mixer state is enabled by adding the 'report_mixer'
attribute to the drivers configuration and setting its value to 'yes'.

The following snippets illustrates the format of the report:

!<mixer_state>
!  <mixer field="inputs.beep" value="108"/>
!  <mixer field="outputs.hp_sense" value="plugged"/>
!  <mixer field="outputs.master" value="128,128"/>
!  <mixer field="outputs.mic_sense" value="unplugged"/>
!  <mixer field="outputs.spkr_muters" value="hp,mic"/>
!</mixer_state>

The mixer state may expose other mixer fields as well, depending on the
used sound card. The naming scheme of the attributes intentionally
matches the naming scheme of OpenBSD's mixerctl(1) program.

Each 'mixer' node can be used to configure the audio driver by using it
in its configuration, e.g.:

!<config report_mixer="yes">
!  <mixer field="outputs.master" value="255,255"/>
!</config>

This configuration will set the output volume to the highest possible
value. Although it is now also possible to update the configuration
at run-time it should not be done while the driver is currently playing
or recording because it may provoke the generation of artefacts.

Fixes #1973.
This commit is contained in:
Josef Söntgen
2016-04-24 10:56:31 +02:00
committed by Christian Helmuth
parent 44648bb5c7
commit 47990f37d7
25 changed files with 395 additions and 386 deletions
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12
repos/dde_bsd/src/lib/audio/bsd.h
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@ -5,7 +5,7 @@
*/
/*
* Copyright (C) 2014-2015 Genode Labs GmbH
* Copyright (C) 2014-2016 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
@ -16,19 +16,19 @@
/* Genode includes */
#include <base/cache.h>
#include <base/env.h>
#include <irq_session/capability.h>
#include <os/server.h>
/* local includes */
#include <scheduler.h>
namespace Bsd {
int probe_drivers();
int probe_drivers(Genode::Env&, Genode::Allocator&);
void irq_init(Server::Entrypoint &ep);
void timer_init(Server::Entrypoint &ep);
void mem_init(Genode::Env&, Genode::Allocator &);
void irq_init(Genode::Entrypoint&, Genode::Allocator&);
void timer_init(Genode::Entrypoint&);
void update_time();