November 2008 - Pro-apps-dev

Sequence Limit on XML Import
by Andreas Kiel 30 Nov '08

30 Nov '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Hi all, Does anyone know what the max sequence length is when you import a XML? Thanks Andreas _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.a… This email sent to site_archiver(a)lists.apple.com

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Adding media to FCP project using Apple Events
by frank 24 Nov '08

24 Nov '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Hi All, so my questions are: Thanks in advance, Frank _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.a… I have an FXPlug plugin for FCP that generated media which I would like to insert into an FCP project: 1 - Is there a way to add media (audio or video) to an FCP project using apple events? 2 - If so, does anyone know of an example that I might learn from? This email sent to site_archiver(a)lists.apple.com

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Getting time offset of layer image param in FCP?
by Stonewall Ballard 19 Nov '08

19 Nov '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:from:to :content-type:content-transfer-encoding:mime-version:subject:date :x-mailer:sender; bh=WhLDQlDajc3lzayT5Y6KSBd3VNb2eS9yZ6K8J4Jc/dI=; b=CMjIllm/Isj9j0A03ykQTTa0xuJCStVgOeFYQgron7LUz16QsxresJoKX+0Ls2Diq0 sfbHWWmW71gN/jF62YCpRw9W0hYd51pGu7UJcEIKu/7XCpDkIKn357tXGGNcTshGILOe K3+wGW2DyclBvFd1jKJ0ESVdgCUQ00bCom9Ro= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:from:to:content-type:content-transfer-encoding :mime-version:subject:date:x-mailer:sender; b=X/xEfS8kN1sYOeCW5BTuShWWBWmJ9aw1szcB0GDAndIqZ4YXOxO1kQFHQxj89S0VqF r3y5fIaGxHlsObkEvkjCP2F/zutzu8ENr49w4ciO0ky8Xb0cdLetfA6vjIIT7NJL+Iqf tGADmHIQaLq5UfUM0iNzD7zGbDG033W3mQK2s= Thanks. - Stoney -- Stonewall Ballard stoney(a)sb.org http://stoney.sb.org/ _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.a… In Motion, a layer used as an image param is naturally synchronized with the filter's layer, even if they start at different times. In FCP, I haven't been able to find a way to accomplish this. I would have thought that timingApi's startTimeOfImageParm:forEffect:, possibly in conjunction with startTimeForEffect: or startTimeOfInputToFilter: would let me calculate any time offset between a layer with a filter and another layer with which it's composited, and which also is used as an image param. However, startTimeOfImageParm:forEffect: always returns 0 in my tests. I've also found that both timelineTimeFromImageTime:forParmId:forEffect: and timelineTimeFromInputTime:forFilter: return 0.0 when given a time of 0.0, even though the filtered clip and the image param clip are offset (differently) from the beginning of the sequence. What's odder (to me) is that the two examples of built-in FCP filters that I checked, Difference Matte and Compound Arithmetic, use only the first frame of an image param. I don't understand the point of that. I don't have an existence proof that FCP filters can access other layers at the current time. This, of course, is common in AE and Motion. Is there a way for a filter in FCP to determine the current frame of another layer in the same sequence as the filter's layer, when it's used as an image param? This email sent to site_archiver(a)lists.apple.com

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Re: Plugin not receiving -dealloc call at the expected time
by David Yamnitsky 19 Nov '08

19 Nov '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Thanks for all the help! David On Nov 17, 2008, at 11:31 AM, Paul Schneider wrote: Hi David, I'll assume that you see this problem in FCP and not Motion? - Paul On Nov 16, 2008, at 10:50 AM, David Yamnitsky wrote: Thanks in advance, David _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/pschneider%40apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.a… It seems that the most stable option is to go modal... I tested the example code, and the same thing occurred as in my code. When the effect was deleted, the window wasn't released and clicking the "Re-render" button caused a crash. I believe that when an effect is "deleted" in FCP, it is actually transferred to the undo stack, where it hangs out until either a) the user hits undo to bring it back, or b) the "delete effect" action falls off the stack. The second one can happen if the stack gets full (I think by default, we cap it at 20 actions, but you can adjust this in the preferences), or if the user does something to take undo down a different branch (like adding a different effect). This would explain why you don't get a -dealloc message when you delete the effect, and why you receive -dealloc at a seemingly random time later. I don't know why your plugin behaves differently from the example in this respect; I'd actually expect the example to have the same problem. I can investigate that. Without a crash report, I can't speculate on why you are crashing, but it sounds like you're manipulating the parameters of an effect which only lives on the undo stack (isn't applied to any clip or sequence), and I wouldn't be surprised if that confused Final Cut. We won't send you a separate "the effect has been deleted, as far as the user's concerned" message, so there's not much you can do to trap this case. We should probably dealloc FxPlugs when they're removed from the clip, and re-alloc them if that removal is undone. Please file an enhancement request at bugreport.apple.com if you'd like that behavior. In the meantime, I think you will have some problems trying to manage a floating window from an FxPlug in Final Cut. I know that there's a problem where FCP won't refresh the canvas if you change a parameter which isn't loaded in the viewer's control tab, and it sounds like you've found a second issue. I'd recommend sticking to a modal UI for now. Hi everyone, I'm building a plugin which opens a separate window. It all works fine, except I'm having the problem that when the effect is deleted, the window remains open. Any attempt to manipulate something in the window which makes an FxPlug API call crashes the app. I consulted the FloatingWindow example code, which just releases the window when -dealloc is sent to the plugin object, which is the same thing I'm doing. I did some digging, and found that the FloatingWindow example receives the -dealloc call right when the effect is deleted, but my plugin receives that call rather spontaneously, either when the app is quit or when another effect is applied. Why is this? Could it be because my plugin is dynamically registered? (that seems to be the only obvious difference between the FloatingWindow example and my code). This email sent to pschneider(a)apple.com This email sent to site_archiver(a)lists.apple.com

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Determining codecs
by Bruce Sharpe 18 Nov '08

18 Nov '08

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Re: Quartz vs Motion float pixels
by Darrin Cardani 18 Nov '08

18 Nov '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com On Nov 18, 2008, at 11:22 AM, Stonewall Ballard wrote: On Nov 18, 2008, at 1:02 PM, Darrin Cardani wrote: Darrin -- Darrin Cardani dcardani(a)apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.a… Bummer. So you're getting a bitmap and then asking Quartz to draw into it, right? One option would be to tell the host you want a texture, and then download the texture yourself. You can either tell OpenGL to give it to you in the correct order, or you can write a short fragment program to swizzle the color channels before downloading it. That's an interesting idea, but won't I lose resolution in the floats that way? You shouldn't if you ask for 32-bit floats (as opposed to 16-bit half- floats). In your call to glReadPixels (or similar methods), I think you want to give a format of GL_FLOAT. Are you concerned that some older cards use 24-bit floats? On those machines, even if you have a software filter, I believe that we're getting the input image data from the card anyway, so it would still be at that resolution regardless of whether you tell the app to give you a texture or a bitmap. This email sent to site_archiver(a)lists.apple.com

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Re: Quartz vs Motion float pixels
by Stonewall Ballard 18 Nov '08

18 Nov '08

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Re: Quartz vs Motion float pixels
by Darrin Cardani 18 Nov '08

18 Nov '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.a… This email sent to site_archiver(a)lists.apple.com

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Re: formatsFloatRGBABitmapsAsARGB?
by Darrin Cardani 18 Nov '08

18 Nov '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com On Nov 18, 2008, at 8:55 AM, Stonewall Ballard wrote: Thanks, Darrin -- Darrin Cardani dcardani(a)apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.a… What does it mean for Motion 3 to return YES for [_hostCapabilities formatsFloatRGBABitmapsAsARGB]? That makes no sense to me. I thought this was supposed to return NO for hosts that labeled their float bitmaps correctly, which Motion 3 apparently does. This section from the SDK overview is ambiguous, since it doesn't say how Motion corrected this problem: Float Images pixelFormat Correction Motion 2.1 ordered pixel components RGBA in floating-point images, but the -pixelFormat method returned ARGB. Motion 3 corrects this problem. You can determine whether floating-point images are mislabeled by querying [FxHostCapabilities formatsFloatRGBABitmapsAsARGB]. It's further complicated by the fact that we didn't specify whether the constant means input images or output images, and we were also mislabeling output images, but forgot to fix them (if I recall correctly). So you may get an input image labeled ARGB, and an output image labeled RGBA, but really everything is ARGB (as of Motion 3). I believe I've fixed the labeling of output images for a future version. I assume that Motion 3 corrected this problem by changing the component order to ARGB, since that's what I'm seeing in the FxBitmaps, but I don't see any mislabeling. As in my previous message, it seems very odd to me that Motion would switch from RGBA to ARGB float pixels, especially since Quartz doesn't support float ARGB. Any explanations would be greatly appreciated. I have to admit that some of this happened before I started working here. But let me see if I can figure this out. Looking through source control, it looks like in July '06, I added code to convert 32-bit per channel images from RGBA to ARGB so they would be consistent with 8-bit images. And, as I said above, the change for output images labeling isn't yet shipping. And as a reminder, if we aren't fixing some bug that's bugging you, it may be because we don't know about it! Please file bugs when you find them, and be as clear as possible in your bug descriptions. As for the FxHostCapabilities, it sounds like it's just wrong. It's possible that we added that method to FxHostCapabilities, then later fixed whatever it was supposed to be telling you about, but forgot to update the value returned by the FxHostCapabilities. I've filed a bug to look into it. This email sent to site_archiver(a)lists.apple.com

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Re: Quartz vs Motion float pixels
by Stonewall Ballard 18 Nov '08

18 Nov '08

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