Oops - should have said sdtaudio, not sdtaudiocontrol.
Bob Doolittle wrote:
Chrystophe Vergnaud wrote:
Le Mardi 07 Mars 2006 19:45, Bob Doolittle a écrit :
Chrystophe Vergnaud wrote:
Hi,
I'm working on an audio conferencing software and I don't understand
how audio recording works on sunray.
I works on solaris 10 with SRSS 3.1.
I have tried the oss* commands (oss package from 4front
technologies) and
the esd* commands without success :
With the oss* command I can record my voice on the server with a
microphone and play it without problem.
When I try to record myself on the sunray, it create the sample but
when I
play it there's no sound. (when i play a 'good' sample I can hear it.)
I think that I don t record the good dev. I understand that
$AUDIODEV is
used to play sound, but is it used to record too ?
It's up to the application to honor $AUDIODEV, so I think this is
really a question about OSS/ESD, not Sun Ray.
SRSS creates dev for each SunRay.
For my test I have one sunray on the network so it s easy to list the
dev :
# ls /tmp/SUNWut/dev/utaudio/
1 1ctl 1stat
The output stream is the 1 (cat mysample.wav
>/tmp/SUNWut/dev/utaudio/1 works), but there's no input input stream
declared that's why I have no recording.
This is both an input and output device. You can prove this to
yourself by playing with /usr/dt/bin/sdtaudiocontrol. Once the
device is opened for reading the Sun Ray will initiate the
upstream audio protocol.
If you can't get to it from OSS/ESD, then most likely the problem
lies there.
One thing to try is to set LD_PRELOAD=libc_ut.so in your
environment and see if this solves your problem. This
library interposes open calls to "/dev/audio" and converts them
to opens of $AUDIODEV for naive applications/frameworks
that don't honor the variable properly. I'm not sure how early
you'd need to set this in order to get OSS/ESD to pick it up.
-Bob
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