Does it need full-duplex to use snd_pcm_link ?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I failed to record with the example code 'latency.c' written in the doxygen manual.
When it plays back and records at the same time, using snd_pcm_link,
should the hardware be implemented as full-duplex of i/o?
As previous comments pointed in this lists,
some buffer length data are written into a playback handler,
and then reading starts.
They said, it should be needed to have 4096 bytes written in the write buffer.
But in my case, 
'writei' continues to return EAGAIN if more than 64byte are to be written.

Any comment is welcom.
-- 
UMENO, Junji
ElmicWescom, Inc.

-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
Alsa-devel mailing list
Alsa-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/alsa-devel

[Index of Archives]     [ALSA User]     [Linux Audio Users]     [Kernel Archive]     [Asterisk PBX]     [Photo Sharing]     [Linux Sound]     [Video 4 Linux]     [Gimp]     [Yosemite News]

  Powered by Linux