Accessing the sound card and microphone

Dave Korn dave.korn@artimi.com
Tue Jun 14 14:44:00 GMT 2005


----Original Message----
>From: eghan020@uottawa.ca
>Sent: 14 June 2005 13:29

> Hello,
> 
> I have installed the latest version of cygwin on XP and it works fine.
> I'm trying to write a small C application that reads data from a
> Microphone.  Another application is attempting to write data to the sound
> card to be played.
> Does anyone know how to open a connection (file descriptor) to the
> microphone?
> 

  It works the same as the dsp device under linux, so 

    fd = open ("/dev/dsp", O_RDWR); 

should work to a first approximation..... there's a testcase in the cygwin
source code that would serve as a good example, take a look here:

http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/testsuite/winsup.api/devdsp.
c?cvsroot=src

or to just download the latest version, you could run 

wget -O devdsp.c
'http://cygwin.com/cgi-bin/cvsweb.cgi/~checkout~/src/winsup/testsuite/winsup
.api/devdsp.c?rev=1.4&cvsroot=src'

at the cygwin shell prompt.

    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


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