SNDCTL_DSP_CHANNELS ioctl not implemented
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? __ Tiscali ADSL SENZA CANONE: Attivazione GRATIS, contributo adesione GRATIS, modem GRATIS, 50 ore di navigazione GRATIS. ABBONARTI TI COSTA SOLO UN CLICK! http://point.tiscali.it/adsl/index.shtml -- 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/
Re: SNDCTL_DSP_CHANNELS ioctl not implemented
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/
