Re: [Jack-Devel] [FFADO-devel] [PATCH] v1.2 of setbufsize support for firewire driver

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DateSat, 17 Mar 2012 21:45:45 +0100
From Adrian Knoth <[hidden] at drcomp dot erfurt dot thur dot de>
To[hidden] at lists dot jackaudio dot org
In-Reply-ToJonathan Woithe [Jack-Devel] [PATCH] v1.2 of setbufsize support for firewire driver
On 03/13/2012 06:13 AM, Jonathan Woithe wrote:

Hi, especially las!

I've merged Jonathan's update to support buffersize changes with FFADO.
You should have received a merge request, otherwise, pull from

     git://github.com/adiknoth/jack1.git ffado-update


Jonathan's patch contains the following comment:

> +	// Other drivers (eg: ALSA) don't seem to adjust latencies via
> +	// jack_port_set_latency_range() from the bufsize() callback, so we
> +	// won't either.  Is this right?
> +
> +        return 0;

He has spotted a problem, the ALSA backend doesn't report the changed
latency (see jack_lsp -L before and after jack_buffersize)

I believe we have to change this, either on higher layers (probably not
possible) or in each driver individually.


Cheers
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