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Date:	Tue, 9 Mar 2004 09:30:49 +0100
Message-ID:	<4034E3090003002F@mail-4.tiscali.it>
From:	fabrizio DOT ge AT tiscali DOT it
Subject:	SNDCTL_DSP_CHANNELS ioctl not implemented
To:	cygwin AT cygwin DOT com
MIME-Version:	1.0
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id i298egd7020924

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?

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