Thanks, I kinda understand.
Let me put it like this then. I am helping the Plex developers with
creating a visualizer. If a make a good one enough, they will use it
as their "Now Playing" screen in Plex (if you do not know what it is,
it's a mediacenter solution for the mac. http://www.plexapp.com).
I told the guys that it will not be possible to add info about the
next track, but they are open for ideas on how to solve things like
this. Is there something they can develop in Plex, so QC can get that
data? The "Now Playing" screen they are using has that info today.
Plex is not a Cocoa-app though, it's a weird mix of different
libraries and frameworks.
Regards,
Daniel
On Jul 10, 2009, at 2:37 PM, Christopher Wright wrote:
1. Ok, that was what I was afraid of. But let me rephrase the
question then. Is there a list somewhere with which protocols are
in place today for iTunes? The Visualizer template, do that contain
all of them already?
A protocol is just a defined way to get data into and out of a
composition. All the protocols are listed in the Protocol
Conformance dialog (option-cmd-P):
<QCProtocols.png>
(The QuartzBuilder Application isn't there by default -- that's from
a kineme.net product)
iTunes only obeys the Music Visualizer protocol -- a composition can
obey more than 1 protocol, but an app will only ever make use of the
ones it was designed for.
When you add a protocol (through this dialog, or when creating a new
composition from a template), it'll add _all_ the required inputs/
outputs, and _all_ the optional inputs/outputs. So what you see is
what there is.
2. And for future reference, is there a list with other
applications protocols that Apple provides? Maybe I will hit the
same snag when doing something for iphoto, iMovie etc.
The list above is all of them. Applications will pick compositions
that support the protocols they require (iTunes selecting Music
Visualizers, for example), but I don't know if each app will let you
know what protocol it's looking for. (In many cases it's implied,
but sometimes it's not so clear)
--
[ christopher wright ]
[email protected]
http://kineme.net/
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