Audio Related

Audio Related

[wynfield]

I want to add audio output volume control to an application.   But, I don't know how to go about it yet.

If you know anything about controlling volume from within cygwin applications or have done so, I would appreciate your telling me about it.

Regards

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

Re: Audio Related

[Corinna Vinschen]

[-- Attachment #1: Type: text/plain, Size: 843 bytes --]

On Nov 16 11:09, wynfield@gmail.com wrote:
> 
> I want to add audio output volume control to an application.   But, I don't know how to go about it yet.
> 
> If you know anything about controlling volume from within cygwin applications or have done so, I would appreciate your telling me about it.

Cygwin supports a single OSS-like audio device called /dev/dsp.  It's
always connected to the default Windows audio device.

It's not much, but unfortunately we're lacking a developer who's
knowledgable in this audio stuff and interested in either extending the
/dev/dsp interface to support multiple audio devices, or to modernize
this to a more ALSA-like interface.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]

Re: Audio Related

[d.henman]

Thanks for the informative explanation.  It would be nice if someone see this and has the audio knowldge to update this area as you said. 

Thanks

Corinna Vinschen
> On Nov 16 11:09, wynfield wrote
> > 
> > I want to add audio output volume control to an application.   But, I don't know how to go about it yet.
> > 
> > If you know anything about controlling volume from within cygwin applications or have done so, I would appreciate your telling me about it.
> 
> Cygwin supports a single OSS-like audio device called /dev/dsp.  It's
> always connected to the default Windows audio device.
> 
> It's not much, but unfortunately we're lacking a developer who's
> knowledgable in this audio stuff and interested in either extending the
> /dev/dsp interface to support multiple audio devices, or to modernize
> this to a more ALSA-like interface.
> 
> 
> Corinna
> 
> -- 
> Corinna Vinschen                  Please, send mails regarding Cygwin to
> Cygwin Maintainer                 cygwin AT cygwin DOT com
> Red Hat

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

Re: Audio Related

[Christopher Faylor]

On Sat, Nov 16, 2013 at 10:03:21PM +0900, wynfield@gmail.com wrote:
>Yes, waveOutSetVolume is in mmsystem.h as well as you mentioned.  

This is, of course, not really a Cygwin issue.  If you're using a Windows
API to control your audio then you should be investigating Windows forums
for help.

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

Re: Audio Related

[wynfield]

Yes, waveOutSetVolume is in mmsystem.h as well as you mentioned.  

Thanks for the helpful information.
Regards

George M. Florendo <georgeflorendo@gmail.com> wrote:
> On 11/16/13, wynfield at gmail dot com wrote:
> > I want to add audio output volume control to an application.   But, I
> > don't know how to go about it yet.
> >
> > If you know anything about controlling volume from within cygwin
> > applications or have done so, I would appreciate your telling me about
> > it.
> 
> Check the win32api package and read on the waveOutGetVolume() and
> similar functions.   I suppose there is also a waveOutSetVolume() or
> something like that.
> 
> /usr/include/w32api
> $ grep -re waveOutGetVolume *
> mmsystem.h:  WINMMAPI MMRESULT WINAPI waveOutGetVolume(HWAVEOUT
> hwo,LPDWORD pdwVolume);
> 
> 
> 
> -- 
> George M. Florendo
> Programmer
> http://www.facebook.com/i.am.georgeflorendo
> 
> --
> Problem reports:       http://cygwin.com/problems.html
> FAQ:                   http://cygwin.com/faq/
> Documentation:         http://cygwin.com/docs.html
> Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
> 

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

Re: Audio Related

[George M. Florendo]

On 11/16/13, wynfield at gmail dot com wrote:
> I want to add audio output volume control to an application.   But, I
> don't know how to go about it yet.
>
> If you know anything about controlling volume from within cygwin
> applications or have done so, I would appreciate your telling me about
> it.

Check the win32api package and read on the waveOutGetVolume() and
similar functions.   I suppose there is also a waveOutSetVolume() or
something like that.

/usr/include/w32api
$ grep -re waveOutGetVolume *
mmsystem.h:  WINMMAPI MMRESULT WINAPI waveOutGetVolume(HWAVEOUT
hwo,LPDWORD pdwVolume);



-- 
George M. Florendo
Programmer
http://www.facebook.com/i.am.georgeflorendo

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple