Re: [LAD] Routing signals in mixer (Ardour, Qtractor)

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From: <fons@...>
To: <linux-audio-dev@...>
Date: Monday, July 12, 2010 - 11:14 pm

On Mon, Jul 12, 2010 at 11:37:03PM +0100, Rui Nuno Capela wrote:

> i think that's the "zero-copy" optimization that jack pursues when ports

Yes, and it's OK except that Jack should not do this
when the input and output are on the same client.

When connecting A to B the way the signal A is seen by
B must not depend on other ports being connected to B.
At least not if a writeable Jack port is supposed to
be a linear summing point. But when using zero-copy
in some cases it does. Which is why I *do* call this
a bug. Apparently it has not been fixed.

Ciao,

--
Je veux que la mort me trouve plantant mes choux, mais
nonchalant d’elle, et encore plus de mon jardin imparfait.
(Michel de Montaigne)
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Messages in current thread:
[LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 7:49 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 9:32 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 9:50 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 12:55 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 5:26 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 6:27 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Thu Jul 15, 12:22 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Harry Van Haaren, (Thu Jul 15, 5:23 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), James Morris, (Thu Jul 15, 5:32 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Harry Van Haaren, (Thu Jul 15, 5:39 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Thu Jul 15, 5:49 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Fri Jul 23, 11:12 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Rui Nuno Capela, (Mon Jul 12, 8:30 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Rui Nuno Capela, (Mon Jul 12, 10:37 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), , (Mon Jul 12, 11:14 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 8:35 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Thu Jul 15, 12:07 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 3:08 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 12:05 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Thu Jul 15, 11:59 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Rui Nuno Capela, (Wed Jul 7, 1:15 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Rui Nuno Capela, (Wed Jul 7, 6:38 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 6:40 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 6:46 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 6:49 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 7:01 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 5:41 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 5:46 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 2:40 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 8:52 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Natanael Olaiz, (Wed Jul 7, 8:05 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 8:08 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 8:15 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 8:07 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Natanael Olaiz, (Wed Jul 7, 9:06 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 9:12 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Natanael Olaiz, (Wed Jul 7, 9:24 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 9:25 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Natanael Olaiz, (Wed Jul 7, 9:38 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 9:54 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 10:59 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 12:37 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 11:00 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 9:15 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 9:18 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 9:18 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 9:19 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 9:25 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 8:11 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 8:03 am)