[LAD] Jack latency handling (Re: Software for recording digital audio?)

[Paul Davis]

On Fri, Jun 25, 2010 at 1:03 PM, Florian Faber <faber at faberman.de> wrote:
> On 06/25/10 17:08, Robin Gareus wrote:
>
>> The "system_playback" port has a latency of 1024 frames and so is the
>> jack_buffersize (frames per period). "app1" is a simple jack application
>> that prints the _total_-port-latency of it's in & out ports every time
>> they change and announces a latency of 512 frames on its input port (The
>> individual port-latencies themselves can be displayed with `lack_lsp -l`).
>
> Is there a mechanism that also allows to add the internal latency of the
> sound interface, like in CoreAudio?

the -I and -O flags for the backend(s) add these values. JACK cannot
determine them by itself, so you need to run jdelay or get the data
from some other source, and then add it.