Re: Reference Image parameters in a FxGenerator
Re: Reference Image parameters in a FxGenerator
- Subject: Re: Reference Image parameters in a FxGenerator
- From: Brian Gardner <email@hidden>
- Date: Mon, 23 Mar 2009 19:28:22 -0700
Ha.... I guess I failed the sanity check. :-)
Thanks, Darrin. I thought the -getBitmap signaled
the existence of the parameter assignment for a reference image.
My bad. Thanks for correcting me. That was my problem.
-- Brian
On Mar 23, 2009, at 2:16 PM, Darrin Cardani wrote:
Brian,
As Paul said, it would help to have more information. But I wanted
to point out one small problem with your code snippet below. The
value returned by -getBitmap::::: is not whether or not the control
has an image assigned to it. It's whether or not the call was
successful. There may be no image assigned to the image well, and
the call will still return YES if no errors occur (which should be
always). If you're using that variable to determine whether to use
the returned FxBitmap, you will likely crash before there's anything
in the image well.
Darrin
On Mar 23, 2009, at 11:00 AM, Brian Gardner wrote:
Just as a sanity check....
I'm writing an FxGenerator plugin for FCP/Motion.
It has a reference image parameter, and the parameter shows up okay.
I can assign a source video to the parameter okay in FCP & Motion.
But, when I try to access the image in renderOutput,
the request fails.
Can I access a reference image in an FxGenerator?
(Or is that forbidden)
If I can, do I use the same parmsApi request as I
would in a Filter or Transition type plugin...
or is there something different required in a Generator plugin?
-- Brian
PS: Small code clippette looks like:
FxBitmap * controlImageMap;
double offsetX = 0, offsetY = 0;
BOOL isControlImageAssigned =
[parmsApi getBitmap:&controlImageMap
layerOffsetX:&offsetX
layerOffsetY:&offsetY
requestInfo:renderInfo
fromParm:kControlImageParamID
atTime:renderInfo.frame];
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Darrin Cardani
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