disabling full duplex in oss emulation

disabling full duplex in oss emulation

[James C Georgas]

Is there a way to disable full duplex mode at runtime for OSS emulation?
Perhaps a writable /proc entry or an environment variable? I have a
SBLive, which uses the emu10k1 driver.


-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

Re: disabling full duplex in oss emulation

[Lee Revell]

On Sun, 2006-08-13 at 17:27 -0400, James C Georgas wrote:
> Is there a way to disable full duplex mode at runtime for OSS emulation?
> Perhaps a writable /proc entry or an environment variable? I have a
> SBLive, which uses the emu10k1 driver.

I don't think so.  What problem are you trying to solve?

Lee


-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

Re: disabling full duplex in oss emulation

[James C Georgas]

On Sun, 2006-13-08 at 17:31 -0400, Lee Revell wrote:
> On Sun, 2006-08-13 at 17:27 -0400, James C Georgas wrote:
> > Is there a way to disable full duplex mode at runtime for OSS emulation?
> > Perhaps a writable /proc entry or an environment variable? I have a
> > SBLive, which uses the emu10k1 driver.
> 
> I don't think so.  What problem are you trying to solve?
> 
> Lee

The problem is a game called Terminus. It spawns separate threads to
handle each half of the duplex. However, one of the threads has a bug in
it I think, because it goes into an endless loop and hangs the whole
app. It works fine with native OSS drivers, because the OSS emu10k1
driver doesn't implement full duplex, and the program skips spawning the
thread.

So basically, I need a way to turn off full duplex before running this
program.


-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

Re: disabling full duplex in oss emulation

[Alan Horstmann]

On Monday 14 August 2006 03:23, James C Georgas wrote:
> The problem is a game called Terminus. It spawns separate threads to
> handle each half of the duplex. However, one of the threads has a bug in
> it I think, because it goes into an endless loop and hangs the whole
> app. It works fine with native OSS drivers, because the OSS emu10k1
> driver doesn't implement full duplex, and the program skips spawning the
> thread.
>
> So basically, I need a way to turn off full duplex before running this
> program.

I have posted to this list about 'Linux Duplex bug', which arises because the 
OSS control can only set one value for DSP_NUMBER_OF_CHANNELS.  Problems 
occur if the duplex stream has different record and playback numbers of 
channels.  Just in case this is relevant here, look up the posting.

Alan


-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

Re: disabling full duplex in oss emulation

[Takashi Iwai]

At Sun, 13 Aug 2006 17:27:39 -0400,
James C Georgas wrote:
> 
> Is there a way to disable full duplex mode at runtime for OSS emulation?
> Perhaps a writable /proc entry or an environment variable? I have a
> SBLive, which uses the emu10k1 driver.

Yes, see ALSA-Configuration.txt and Procfile.txt.


Takashi

-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

Re: disabling full duplex in oss emulation

[James C Georgas]

On Wed, 2006-16-08 at 12:36 +0200, Takashi Iwai wrote:
> At Sun, 13 Aug 2006 17:27:39 -0400,
> James C Georgas wrote:
> > 
> > Is there a way to disable full duplex mode at runtime for OSS emulation?
> > Perhaps a writable /proc entry or an environment variable? I have a
> > SBLive, which uses the emu10k1 driver.
> 
> Yes, see ALSA-Configuration.txt and Procfile.txt.
> 
Thanks for the tip.

Seems that I don't have the /proc/asound/card0/pcm#[cp]/oss entries. I'm
running 1.0.11 (gentoo packages). Any thoughts?

james@Rainsong /proc/asound/card0 $ ls
codec97#0/    fx8010_code       fx8010_tram_data  midi1      voices
emu10k1       fx8010_gpr        id                midi2      wavetableD1
fx8010_acode  fx8010_tram_addr  midi0             oss_mixer
james@Rainsong /proc/asound/card0 $

> 
> Takashi
> 
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/alsa-devel


-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

Re: disabling full duplex in oss emulation

[Takashi Iwai]

At Wed, 16 Aug 2006 16:18:19 -0400,
James C Georgas wrote:
> 
> On Wed, 2006-16-08 at 12:36 +0200, Takashi Iwai wrote:
> > At Sun, 13 Aug 2006 17:27:39 -0400,
> > James C Georgas wrote:
> > > 
> > > Is there a way to disable full duplex mode at runtime for OSS emulation?
> > > Perhaps a writable /proc entry or an environment variable? I have a
> > > SBLive, which uses the emu10k1 driver.
> > 
> > Yes, see ALSA-Configuration.txt and Procfile.txt.
> > 
> Thanks for the tip.
> 
> Seems that I don't have the /proc/asound/card0/pcm#[cp]/oss entries. I'm
> running 1.0.11 (gentoo packages). Any thoughts?
> 
> james@Rainsong /proc/asound/card0 $ ls
> codec97#0/    fx8010_code       fx8010_tram_data  midi1      voices
> emu10k1       fx8010_gpr        id                midi2      wavetableD1
> fx8010_acode  fx8010_tram_addr  midi0             oss_mixer
> james@Rainsong /proc/asound/card0 $

Did you enable CONFIG_SND_VERBOSE_PROCFS?


Takashi

-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642

Re: disabling full duplex in oss emulation

[James C Georgas]

On Thu, 2006-17-08 at 11:00 +0200, Takashi Iwai wrote:
> At Wed, 16 Aug 2006 16:18:19 -0400,
> James C Georgas wrote:
> > 
> > On Wed, 2006-16-08 at 12:36 +0200, Takashi Iwai wrote:
> > > At Sun, 13 Aug 2006 17:27:39 -0400,
> > > James C Georgas wrote:
> > > > 
> > > > Is there a way to disable full duplex mode at runtime for OSS emulation?
> > > > Perhaps a writable /proc entry or an environment variable? I have a
> > > > SBLive, which uses the emu10k1 driver.
> > > 
> > > Yes, see ALSA-Configuration.txt and Procfile.txt.
> > > 
> > Thanks for the tip.
> > 
> > Seems that I don't have the /proc/asound/card0/pcm#[cp]/oss entries. I'm
> > running 1.0.11 (gentoo packages). Any thoughts?
> > 
> > james@Rainsong /proc/asound/card0 $ ls
> > codec97#0/    fx8010_code       fx8010_tram_data  midi1      voices
> > emu10k1       fx8010_gpr        id                midi2      wavetableD1
> > fx8010_acode  fx8010_tram_addr  midi0             oss_mixer
> > james@Rainsong /proc/asound/card0 $
> 
> Did you enable CONFIG_SND_VERBOSE_PROCFS?
> 
That did the trick. Thanks.


-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642