nasd.conf Is a file that can be used to configure the behaiviour of the NAS
server, including what devices it will attempt to use, the minimum & maximum
frequencies used, if the device should be used in 8bit or 16bit mode, what
fragment size and number of fragments should be used (useful for tuning the
server's latency) and if the server should be verbose when starting or
output debugging information. Not all options are supported for all
servers, see the /etc/nas/nasd.conf.eg file for information on what
options are supported for which servers.
THE CONFIG FILE SYNTAX
There are up to three section in the config file. The first section
deals with global options, some of which just turn on verbose messages
when parsing the config file, and setting debug messages on. The
remaining two sections will, if present, adjust various parameters of
the input and output devices, for those server that undersand them.
verbose Sets a flag telling the server to report what it's trying to do with each
setting in the config file.
debug <number> Sets the debug flag, which will provide a trace of the server's activities
on stderr. Set <num> to 0 to disable debug messages, 99 for *alot* of
debug messages.
mixerinit YES|NO Set to "YES" to "NO". Defines whether the server will init the mixer
device on startup. (voxware)
OutDevType EXT|INT For HPUX servers, define to "EXT" to use the external output device
(headphone/speakers) or "INT" for the internal output device (internal
speaker). Defaults to external.
inputsection Marks the beginning of the input section, which allows various parameters
of the input device to be set up.
end Marks the end of the input section or output section.
device devname Specifies what device is used. An example is device "/dev/dsp".
mixer mixername Specifies what mixer device is used. An example is mixer "/dev/mixer".
gain number Specifies the default volume (0-100). The default is 50.
maxrate number the maximum number of samples per second that we'll drive the
card at.
minrate number the minimum number of samples per second that the card will be driven
at.
maxfrags number The maximum number of of kernel buffers that will be used for the device.
the number is dynamically adjusted as the sampling frequency varies.
minfrags number The minimum number of kernel buffers that will be used.
fragsize number The size of each buffer - note that the size must be a power of 2.
wordsize number The number of bits per sample. Allowable values are 8 and 16.
numchans number Used to decide if the card is run in stereo or mono mode. Allowable
values are 1 or 2.
forcerate no|yes Forces the output rate to the current rate. The default is "no".
autoOpen no|yes Whether to open the device at init time (if ReleaseDevice = no). The default is "yes".
readwrite no|yes Whether or not to open the device read/write. The default is "yes".
If set to "no", then for input devices, the device will be opened
readonly, and for output devices, the the device will be opened writeonly.
