Townshend Computer Tools DAT-Link User Manual page 183

NA INFO(3)
sampleRate
Sampling rate of data stream between host and DAT-Link. A setting of 0 indicates that no
sample rate conversion should be performed and the rate will be the same as the DAT sam
p ling rate.
externalRate
Sampling rate of data between the DAT-Link and the digital audio device. For recording
this is a read-only value. For playback, the only allowed settings are 32000, 44100, an
4 8000.
precision Number of bits per sample. Valid choices are 4, 8, 12, 16, 20, 24, 28, or 32. Currently,
only 16 bits/sample are supported under all conditions.
e ncoding Data encoding.
NA_ENCODING_IEEE,
N A_ENCODING_CONTROL. Only NA_ENCODING_LINEAR is supported under all
conditions.
c hannels This field specifies the channels to be used for transfers.
NA_CHANNELS_MONO,
N A_CHANNELS_STEREO.
NA_CHANNELS_CONTROL to transfer a control word with each sample word.
w aiting The number of additional processes waiting to transfer data to/from the server. (Read-
Only).
g ain Gain to be applied to transfers. A value of 1.0 causes no scaling to be performed.
VUdecayRate
Decay rate of VU metering in dB/second.
state State of data transfers.
NA_INACTIVE,
NA_DRAINPAUSED. The NA_FILLING, NA_DRAINING, and NA_DRAINPAUSED
s tates are applicable only to playback.
error If a transfer error occurs, this read-only variable will be set to indicate the cause. Possible
values
N A_XFRERR_OVERRUN, NA_XFRERR_DROPPEDLOCK, NA_XFRERR_DSPERROR,
and NA_XFRERR_RATECHANGED.
b ufferSize Total number of bytes of buffering available. (Read-only).
leftCS AES/EBU left channel status bytes.(Read-only for record)
r ightCS AES/EBU right channel status bytes.(Read-only for record)
user AES/EBU user bytes.(Read-only for record)
c lock Clock source for playback. This should be set to one of: NA_CLOCK_INTERNAL,
NA_CLOCK_EXTERNAL,
p layback.externalRate to determine the output sample rate. Note that if the external or
input settings are used, playback.externalRate and playback.sampleRate will still be exam
i ned to build a sample-rate converter.
master A non-zero value instructs the DAT-Link to output its bit-clock on the external connector.
skipSilence
A non-zero value indicates that leading silence should be deleted during recording.
locked This read-only variable is non-zero if the DAT-Link is receiving a valid digital audio inpu
signal.
protoMajorVersio n
Major version of server's NetAudio protocol. Different major versions are incompatible.
Legal values for this
NA_ENCODING_ALAW,
NA_CHANNELS_LEFT,
In addition any of these can be bit-wise OR-ed with
This read-only variable will take one of the values
NA_FILLING, NA_PAUSED,
are: NA_XFRERR_NOERROR,
or NA_CLOCK_INPUT.
field are NA_ENCODING_LINEAR,
NA_ENCODING_ULAW,
Legal settings are
NA_CHANNELS_RIGHT,
NA_ACTIVE, NA_DRAINING,
NA_XFRERR_UNDERRUN
The internal setting
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