Re: SNDCTL_DSP_CHANNELS ioctl not implemented

[Larry Hall <cygwin-lh at cygwin dot com>]

At 03:30 AM 3/9/2004, you wrote:
>Hello.
>
>I compiled a program intended for Unix on Cygwin. It has a slight problem:
>sound does not work because the program tries to call the SNDCTL_DSP_CHANNELS
>ioctl on /dev/dsp, and it fails.
>
>Looking at the source code, that ioctl is not implemented in fhandler_dsp.cc,
>although it is defined in the header file.
>
>fhandler_dsp.cc implements a similar ioctl, SNDCTL_DSP_STEREO, which takes
>the arguments, increments it by 1 and sets the variable audiochannels_ to
>the result. Maybe SNDCTL_DSP_CHANNELS would be identical, just without the
>increbent by 1, but I am no expert so I cannot be sure.
>
>Is it possible to implement SNDCTL_DSP_CHANNELS in future versions of Cygwin?


Sure, if the underlying capabilities of Windows supports it.  Care to submit
a patch to implement it?  


--
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
838 Washington Street                   (508) 893-9889 - FAX
Holliston, MA 01746                     


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