Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Reply-To: Cygwin List Message-Id: <6.0.1.1.0.20040309121553.03d347b8@127.0.0.1> X-Sender: Date: Tue, 09 Mar 2004 12:17:46 -0500 To: fabrizio DOT ge AT tiscali DOT it, cygwin AT cygwin DOT com From: Larry Hall Subject: Re: SNDCTL_DSP_CHANNELS ioctl not implemented In-Reply-To: <4034E3090003002F@mail-4.tiscali.it> References: <4034E3090003002F AT mail-4 DOT tiscali DOT it> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" 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 -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/