Besides updating to a newer version the update adds the AC97 ICH driver
and addresses shortcomings with the OpenBSD emulation environment:
* Fix 'delay(9)' implementation - it now properly uses 'us' as unit,
which results on faster initialization of the drivers.
* Fix LOG output that got lost during commit f23579532 and bring over
the printf implementation from dde_linux for more structured
printing.
* As said the driver now recognizes the AUICH devices. So far it was
only tested with the device model in VirtualBox where it produces
stuttering audio, investigating the cause is still ongoing.
Fixes#3641.
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 patch integrates three region maps into each PD session to
reduce the session overhead and to simplify the PD creation procedure.
Please refer to the issue cited below for an elaborative discussion.
Note the API change:
With this patch, the semantics of core's RM service have changed. Now,
the service is merely a tool for creating and destroying managed
dataspaces, which are rarely needed. Regular components no longer need a
RM session. For this reason, the corresponding argument for the
'Process' and 'Child' constructors has been removed.
The former interface of the 'Rm_session' is not named 'Region_map'. As a
minor refinement, the 'Fault_type' enum values are now part of the
'Region_map::State' struct.
Issue #1938
The driver is now able to record audio samples. In contrast
to playback it has to be enabled explicitly by setting the
configuration attribute 'recording' to 'yes'. Playback is by
default enabled but may be disabled by setting 'playback' to
'no'. Furthermore it is now possible to configure the mixer
from the configuration. For now, the interface used by vanilla
OpenBSD is just exported.
The following snippet shows how to enable and configure recording
on an Thinkpad X220 where the headset rather than the internal
mic is used as recording source:
! <start name="audio_out_drv">
! <resource name="RAM" quantum="8M"/>
! <provides>
! <service name="Audio_out"/>
! <service name="Audio_in"/>
! </provides>
! <config recording="yes">
! <mixer field="outputs.master" value="255"/>
! <mixer field="record.adc-0:1_source" value="sel2"/>
! <mixer field="record.adc-0:1" value="255"/>
! </config>
! </start>
In addition to selecting the recording source the playback as
well as the recording volume are set to 255 (maximum).
Information about the available mixers and settings in general
may be obtained by setting the 'verbose' to 'yes' in the config
node.
Issue #1644.
These audio drivers enable support for Intel HD Audio (Azalia) and
Ensoniq AudioPCI (ES1370) compatible soundcards. They are ported
from OpenBSD 5.7.
Fixes#1498.
