deva-ctrl-audiopci.so

Sound driver for the AudioPCI chip family

Syntax:

Direct invocation (also causes a new io-audio process to start):

io-audio -c config_file

io-audio -d audiopci [opt[,opt...]]

Mounting (requires that io-audio already be running):

mount -Tio-audio [-oopt[,opt...]] /lib/dll/deva-ctrl-audiopci.so

Runs on:

QNX Neutrino

Targets:

x86, x86_64

Options:

did=device_id: The device ID.
flag=attach_flag: The PCI attach flag (documented in public/pci/pci.h).
irq=irq_number: The interrupt request (IRQ) number.
pci=pci_index: The PCI index of the card you want to attach to. If you don't specify this option, the driver attempts to find the first unused card in the system.
vid=vendor_id: The vendor ID (VID).

For io-audio options, including card options that apply to all sound drivers, see the entry for io-audio.

Description:

The deva-ctrl-audiopci.so shared object is a device driver DLL used by the io-audio manager. It uses the API described in the Audio Developer's Guide.

While deva-ctrl-audiopci.so is running, you can use applications with sound, and those that control the sound system.

Note: Typically, graphics drivers run at a higher priority than applications, but if their priority is higher than the audio driver, it can cause breaks in audio playback and capture. To avoid this problem, use data_thread_prio and intr_thread_prio in the audio configuration file to increase the priority of the audio drivers.

Examples:

Invoke deva-ctrl-audiopci.so directly from io-audio, using a configuration file:

io-audio -c /etc/system/config/audio/io_audio.conf

The following sample audio configuration file sections start this driver:

[global]
verbosity=3

########################################
# On-board audio
########################################
# This card's PCM software mixer and input splitter
# will be the preferred devices
[ctrl]
name=audiopci
input_splitter_enable=1
sw_mixer_ms=16

Invoke deva-ctrl-audiopci.so directly from io-audio:

io-audio -d audiopci

Mount deva-ctrl-audiopci.so (io-audio must be running):

mount -Tio-audio /lib/dll/deva-ctrl-audiopci.so

Files:

deva-mixer-ac97.so or deva-mixer-ak4531.so: Supports the mixer.

Errors:

When an error occurs, deva-ctrl-audiopci.so sends a description of the error to the system logger (see slogger2).

Contributing author:

This utility is based on software contributed to The NetBSD Foundation by Lennart Augustsson <augustss@netbsd.org> and Charles M. Hannum.

License:

This utility is based on software from The NetBSD foundation; for licensing information, see “Licensing information” in Typographical Conventions, Support, and Licensing.