Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Andy Ross wrote: Hardware mixing is, of course, the best solution, but note also that OpenAL can be built with any of a zillion back ends, among them the various sounds servers (esd, arts) which do their own mixing. In fact they *all* get included and an option in ~/.openalrc can define which one to use: ; Contains user settings for OpenAL ; Goes in ~/.openalrc ; Which backend? Tried in order of appearance (define devices '(native alsa sdl esd arts null)) ; Four speaker surround with ALSA (define speaker-num 4) (define alsa-out-device surround40:0,0) ; Some drivers do not support select (define native-use-select ;t) Erik ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Vassilii Khachaturov wrote: I wonder if the openal library, when being paused by simgear as a consequence of the sound mute request, can somehow be made to close the sound device? (I.e., is it possible to have simgear init openal in a different way for this to happen, or does it need a change in openal?) In theory this might be possible, but what would we gain by this? Erik ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
I wonder if the openal library, when being paused by simgear as a consequence of the sound mute request, can somehow be made to close the sound device? (I.e., is it possible to have simgear init openal in a different way for this to happen, or does it need a change in openal?) In theory this might be possible, but what would we gain by this? People like me with a lousy single-dsp on-board sound chips would be able to pause the simulation sound while debugging some flight things, and releasing the sound for other uses. ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Vassilii Khachaturov wrote: People like me with a lousy single-dsp on-board sound chips would be able to pause the simulation sound while debugging some flight things, and releasing the sound for other uses. So, you're really more interested in getting real sound disabling code rather than sound muting as it is now. Erik ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Am Thursday 13 October 2005 15:29 schrieb Erik Hofman: Vassilii Khachaturov wrote: People like me with a lousy single-dsp on-board sound chips would be able to pause the simulation sound while debugging some flight things, and releasing the sound for other uses. So, you're really more interested in getting real sound disabling code rather than sound muting as it is now. Which reminds me of another thing. Is it possible to use /dev/dsp in a non-blocking mode? I want to start a second application which uses /dev/dsp while flightgear is running. I was investigating several applications which can serve as a radio for multiplayermode and noticed that it is not possible. regards, Oliver ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Oliver Schroeder wrote: Am Thursday 13 October 2005 15:29 schrieb Erik Hofman: Vassilii Khachaturov wrote: People like me with a lousy single-dsp on-board sound chips would be able to pause the simulation sound while debugging some flight things, and releasing the sound for other uses. So, you're really more interested in getting real sound disabling code rather than sound muting as it is now. Which reminds me of another thing. Is it possible to use /dev/dsp in a non-blocking mode? I want to start a second application which uses /dev/dsp while flightgear is running. I was investigating several applications which can serve as a radio for multiplayermode and noticed that it is not possible. My general opinion is I'm not sure I would like to see us overly complicate the flightgear code to work around older hardware limitations. I know it's a minor inconvenience if you are on a long flightgear flight and would like to fire up your mp3 player in the background (and find that you can't) but this is going to be a problem for any application that uses sound and I don't really like the idea of overly complicating the flightgear audio code just for this. This isn't a problem on most newer audio hardware which happily knows how to share/mix between multiple audio applications. Personally I think that this problem is outside of the scope of FlightGear and we shouldn't worry about it. Curt. -- Curtis Olsonhttp://www.flightgear.org/~curt HumanFIRST Program http://www.humanfirst.umn.edu/ FlightGear Project http://www.flightgear.org Unique text:2f585eeea02e2c79d7b1d8c4963bae2d ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
On Thursday 13 October 2005 14:42, Oliver Schroeder wrote: Which reminds me of another thing. Is it possible to use /dev/dsp in a non-blocking mode? I want to start a second application which uses /dev/dsp while flightgear is running. Not as far as I'm aware - with ALSA, one should use /dev/adsp which is nonblocking IIRC, but of course ALSA is only on Linux. No idea what the options are for a cross-platform solution.. I was investigating several applications which can serve as a radio for multiplayermode and noticed that it is not possible. I think something like this is badly needed - trying to fly with any degree of coordination with other people is practically impossible using any system which involves typing. Cheers, AJ ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Oliver Schroeder wrote: Am Thursday 13 October 2005 15:29 schrieb Erik Hofman: Vassilii Khachaturov wrote: People like me with a lousy single-dsp on-board sound chips would be able to pause the simulation sound while debugging some flight things, and releasing the sound for other uses. So, you're really more interested in getting real sound disabling code rather than sound muting as it is now. Which reminds me of another thing. Is it possible to use /dev/dsp in a non-blocking mode? I want to start a second application which uses /dev/dsp while flightgear is running. It looks like that isn't such a wise idea: http://opensource.creative.com/pipermail/openal-devel/2004-June/000346.html Erik ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Oliver Schroeder wrote: Which reminds me of another thing. Is it possible to use /dev/dsp in a non-blocking mode? I want to start a second application which uses /dev/dsp while flightgear is running. I was investigating several applications which can serve as a radio for multiplayermode and noticed that it is not possible. esd or artsd would allow you to share the device. I suspect you'd need to start the sound daemon, then your comms s/w (which would need to use the device read/write), then flightgear (write only). -- Jon Stockill [EMAIL PROTECTED] ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
This isn't a problem on most newer audio hardware which happily knows how to share/mix between multiple audio applications. Personally I think that this problem is outside of the scope of FlightGear and we shouldn't worry about it. Curt. Fair enough. I was just hoping for a simple openal-level solution known --- I agree it's not worth deep complications. V. ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Am Thursday 13 October 2005 16:03 schrieb Curtis L. Olson: Oliver Schroeder wrote: Which reminds me of another thing. Is it possible to use /dev/dsp in a non-blocking mode? I want to start a second application which uses /dev/dsp while flightgear is running. I was investigating several applications which can serve as a radio for multiplayermode and noticed that it is not possible. My general opinion is I'm not sure I would like to see us overly complicate the flightgear code to work around older hardware limitations. I hope we don't need to change anything code-wise I know it's a minor inconvenience if you are on a long flightgear flight and would like to fire up your mp3 player in the background (and find that you can't) but this is going to be a problem for any application that uses sound and I don't really like the idea of overly complicating the flightgear audio code just for this. Actually I was thinking about VoiP applications which can be used as real comms. I'm not familiar with multimeadia things and thought /dev/dsp is used directly without any wrapper which then blocks other applications. However, I will try to use some sound daemons. But does it work on all supported plattforms? regards, Oliver ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Hi, Jon Stockill schrieb: Oliver Schroeder wrote: Which reminds me of another thing. Is it possible to use /dev/dsp in a non-blocking mode? I want to start a second application which uses /dev/dsp while flightgear is running. I was investigating several applications which can serve as a radio for multiplayermode and noticed that it is not possible. esd or artsd would allow you to share the device. I suspect you'd need to start the sound daemon, then your comms s/w (which would need to use the device read/write), then flightgear (write only). I'm starting FlightGear on Linux as esddsp fgfs which essentially detours access from /dev/dsp to the sound daemon. There is a delay in audio of about 1/2s (try the flaps), but otherwise it's fine. Regards, Ralf ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
Re: [Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
Curtis L. Olson wrote: Oliver Schroeder wrote: Which reminds me of another thing. Is it possible to use /dev/dsp in a non-blocking mode? My general opinion is I'm not sure I would like to see us overly complicate the flightgear code to work around older hardware limitations. [...] This isn't a problem on most newer audio hardware which happily knows how to share/mix between multiple audio applications. Hardware mixing is, of course, the best solution, but note also that OpenAL can be built with any of a zillion back ends, among them the various sounds servers (esd, arts) which do their own mixing. Andy ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
[Flightgear-devel] a question on Sound/fg_fx.cxx /sim/sound/pause processing
I wonder if the openal library, when being paused by simgear as a consequence of the sound mute request, can somehow be made to close the sound device? (I.e., is it possible to have simgear init openal in a different way for this to happen, or does it need a change in openal?) Vassilii ___ Flightgear-devel mailing list Flightgear-devel@flightgear.org http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
