Disable audio outputs when off?

[sckramer]

Unfortunately there is no easy way to do this. The standard ALSA functions for turning a device off have nothing in them. The function header is there but no code inside. I ran across a comment in a patch file that says that the only way to turn off the S/PDIF is to change the clock select register to point to a clock input that doesn't exist. I haven't found this implemented yet.

The best way would be to implement this function and export it in the "/sys" area, but this is definitely a change in the firmware that can't be done in the field.

John S.

John, did you run accross anything, or new ideas on this during your other work?

Thanks!

[AnotherTribe]

John, did you run accross anything, or new ideas on this during your other work?

Thanks!

I do not think this 'feature' is going to be included anytime soon. As John mentioned in an earlier post the change looks like it needs to me made in the firmware, so it will be up to the developers to implement. There has been no change in the bug ticket status since being assigned to Vahid Fereydouny and with the minimal number of votes (if that even makes a difference these days) I am sure it is of very low priority.

[JohnerH]

I completely forgot about this when I bought my SB... I have 2 distict sources for my DAC. My PC and the SB.

Now everytime I want to switch between them I either have to remove the coaxial from the SB or switch the Toslink off on the PC.

Not cricket!

J

[JohnSwenson]

I completely forgot about this when I bought my SB... I have 2 distict sources for my DAC. My PC and the SB.

Now everytime I want to switch between them I either have to remove the coaxial from the SB or switch the Toslink off on the PC.

Not cricket!

J

The DAC is just auto-sensing? Most will let you manually switch between inputs.

John S.

[th00ht]

The DAC is just auto-sensing? Most will let you manually switch between inputs.

John S.

Actually, and pardon a silly question why would you want to switch of the digital outputs anyway?. Is this really related to DACs sensing if a signal is there? Otherwise I don't really see a reason.
jk

[erikkramer]

Any news on this? I'm desperately looking for it.

I have 2 devices (TV and Squeezebox) with digital outputs, and one input port on my receiver. Got a nice optical splitter, but now I need to unplug the SB every time I watch tv.

Thanks, Erik

[sbirsen]

bump.

same problem here, anyone has a solution to this ?

i've been looking for optical switchers etc for ages to resolve this problem. my receiver has only 1 optical and 1 coaxial input. sb touch coaxial connector takes over the audio, and unless i unplug it, i can't use another audio source...painful.

Any news on this? I'm desperately looking for it.

I have 2 devices (TV and Squeezebox) with digital outputs, and one input port on my receiver. Got a nice optical splitter, but now I need to unplug the SB every time I watch tv.

Thanks, Erik

[Triode]

The hardware generation of the digital out on the Touch is completely different than on the SB3, thus any implementation will have to be written from scratch.

Any implementation depends on whether the S/PDIF device driver has been written to support turning the stream on and off. The hardware itself has the capability but I'm not sure if the device driver will do it.

IF the device driver can do it then adding the capability might not be too difficult and could probably be done with an applet or patch, but if the driver does not support that functionality its much more complicated and would have to be in a future firmware release.

John S.

SqueezePlay (Touch) doesn't allow this unfortunately... So not trivial to add via a patch.

[Following is only for hackers.....:
If you are interested in hacking then I have added the ability to close the alsa port to squeezelite (see linux forum) when the player is turned on and off. For a very convoluted configuration (hackers only configuration) you could load squeezelite onto Touch and try that out. Would need to change the main squeezeplay code to not use the output port first though...]