linux-kernel - Re: looping S/PDIF data

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Message-ID: <s5h4p8cb70u.wl%tiwai@suse.de>
Date:	Mon, 02 Jun 2008 10:00:49 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Pierre Ossman <drzeus-list@...eus.cx>
Cc:	mulix@...ix.org, linux-kernel@...r.kernel.org
Subject: Re: looping S/PDIF data

At Sat, 31 May 2008 11:26:06 +0200,
Pierre Ossman wrote:
> 
> I have a minor annoyance with the snd_trident driver that I was hoping
> you might have a fix for:
> 
> Pausing the output does not seem to take on the S/PDIF output. Analog
> outputs properly stop in their tracks, but the S/PDIF port keeps
> looping the current data buffer, which gives a rather unpleasant end
> result. :)
> 
> Also, I was wondering if the hardware is capable of automatically
> shuffling data from the line in ADC to the S/PDIF port? The driver
> doesn't expose anything, but I don't know if that's because of missing
> code or missing hardware.

AFAIK, there is no analog loopback for SPDIF on trident.  At least,
the driver doesn't support it.

The easiest way would be a software solution, e.g. use JACK, I
suppose.


Takashi
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