Re: [LAD] [RELEASE] jack-audio-connection-kit 0.109.0

On Mon, Jan 14, 2008 at 08:24:40PM +0100, Pieter Palmers wrote:

> A new jack release (0.109.0) is available:

Many thanks for this (long awaited) release.
Finally we have a complete set of callbacks to monitor clients,
ports and connections without requiring polling for information
all the time.

Some questions about these.

The port_id seems to be an integer in the range 0..MAX_NUMBER_OF_PORTS - 1,
in other words an index into an array of preallocated port_t structs,
with jackd using the lowest available ones for new ports.

Any app wanting to keep a list of all existing ports, connections etc.
would need to do something similar for its own per-port data structs.
Can the port ids be safely re-used for this purpose ? In other words
are they specified to behave as they do now ? It would be useful.

Also what is the cost of looking up port_t pointers, port names and
aliases given the port_id ? If they are just read from memory mapped
at the client side it makes not sense for a client to store this
information itself, for e.g. a GUI refresh. If not, it would be
essential for a client to do so.

Ciao,

-- 
FA
Laboratorio di Acustica ed Elettroacustica
Parma, Italia
Lascia la spina, cogli la rosa.
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