Re: Preset converter???
Re: Preset converter???
- Subject: Re: Preset converter???
- From: Howard Moon <email@hidden>
- Date: Mon, 15 Nov 2004 14:51:13 -0800
Ok, thanks! That should be enough info to get me going.
-Howard
On Nov 15, 2004, at 2:41 PM, Urs Heckmann wrote:
Hi,
the <data> section isn't generated by Logic or any host, it's written
out by AUElement::SaveState() (in AUScopeElement.cpp) in the plugin
itself. And I must correct myself, it's not just an array of floats,
but an array of pairs of ParameterID and Value which is obviously
preceeded by a twin UInt32 for Scope/Element (both should be 0).
The way to go would be something like
- load the .fxp and get pointer to float values and its filename
- create a CFMutableDictionaryRef (see AUBase::SaveState() in
AUBase.cpp for reference)
- fill in the required fields for your plugin (type, subtype,
manufacturerid, apiversion )
- add presetname key for .fxp filename
- create a CFMutableDataRef add the 2 zeros for GlobalScope / Element
0 (please verify this step from AUBase.cpp, I'm not entirely sure,
cause it's 11:30 pm after a hard day and I'm not too good friend with
C++ stdlib)
- for each parameter in the .fxp, add an UInt32 for ParameterID and a
float for its value to the CFMutableDataRef
- add the CFMutableDataRef to the CFMutableDictionaryRef
- create a Plist / XML file from the CFMutableDictionaryRef and save
as .aupreset
For further reference, everything needed is in AUBase::SaveState().
You could rip this off and use it as your factory.
For finally saving .aupresets to harddrive, there has been some
excellent example code by Marc Poirier at destroyfx.org CVS Repository
("AudioUnitUtilities" or something).
If you want to be sure, you can "patch" AUBase::SaveState() and write
out everything added to the dictionary into the Console, for instance
to see if the Elements of other Scopes than Global do also generate
parameter data, which I doubt.
Bill?
Cheers,
;) Urs
Am 15.11.2004 um 22:28 schrieb Howard Moon:
Thanks, Urs. I was hoping to avoid the development time to write a
translator, but if I have to, I have to. Do you know where I can
find the AUPreset format sepcification? I've been looking around in
my Developer doc's for a while now, as well as the ADC site, but I
just can't seem to find how the contents of the <data/> section of
that xml file is spec'd (as written out by Logic 7, at least).
Thanks,
Howard
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