October 2008 - Pro-apps-dev

Custom UI parameter in FxGenerator
by Quincey Morris 21 Oct '08

21 Oct '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=SnsDxCVeSLLZ11u2U1DQBrLEpm4MHcFMH3xiIElIfHZrXHdz4vRxfPnMDRr5DyVS; h=Received:Message-Id:From:To:Content-Type:Content-Transfer-Encoding:Mime-Version:Subject:Date:X-Mailer:X-ELNK-Trace:X-Originating-IP; _______________________________________________ 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've tried to add a custom UI parameter to a generator plug-in. The associated custom view simply contains a button. In FCP, the view shows up in the Controls tab of the Viewer. In Motion, the view shows up in the Inspector, but in the HUD for the plug-in the parameter shows as a (malfunctioning) slider instead. If I replace my custom UI parameter setup with the code from the Options Dialog FxPlug example, I get the same results, with the slider in the HUD. The Options Dialog example itself works, but it's a filter, not a generator. I tried writing a filter with the custom UI parameter setup from my generator, and it works correctly in the HUD display. I can't think of any other differences, so I'm wondering if this is a bug in generators only. Does anyone know anything about this, or can anyone suggest some further testing to find out why the view is not displaying in the HUD? BTW, in Motion 'createViewForParm:' isn't being called for the HUD. It's called for the first time when it's needed for the inspector. In FCP, it's called once during startup, and then again when it's needed for the Controls tab. This email sent to site_archiver(a)lists.apple.com

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Re: setting keyframes?
by Paul Schneider 20 Oct '08

20 Oct '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: FxPlug / OpenGL Smooth Line Artifact
by Darrin Cardani 20 Oct '08

20 Oct '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com On Oct 17, 2008, at 5:56 PM, George King wrote: On Oct 17, 2008, at 5:12 PM, Darrin Cardani wrote: On Oct 17, 2008, at 5:10 PM, George King wrote: glClearColor(1,1,1,1); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); How are you creating the NSOpenGLContext? Yes, that's correct. 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… I think the above is your problem. Since colors in OpenGL are already premultiplied, I think you want to use: glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA); That fixes my test case, but unfortunately it introduces a similar problem elsewhere. Now my lines are getting white 'feathers' instead of black. Below is a screenshot from my project; I'll have to work at a better test case. Without knowing how you drew what's in the screenshot, it's hard to say what the problem could be. Remember that using (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) works fine in a fresh NSOpenGLContext. I'm not sure what you mean about premultiplication. My limited understanding of that term is that when a function requires premultiplied color data, the color must multiply each color component by the alpha component ahead of time. So the quadruple for 100% red at 50% transparency is (.5, 0, 0, .5). When I want that color in OpenGL I call glColor4f(1, 0, 0, .5). Please let me know if I am misunderstanding the concept. I think you're understanding it correctly. I was under the impression (though I may be wrong) that you specify colors using straight alpha, but internally, OpenGL premultiplies them. Maybe I'm wrong about that. Needless to say, though, Motion and FCP do expect your plugin to produce premultiplied output, and they give you premultiplied input. This email sent to site_archiver(a)lists.apple.com

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Re: Timecode from audio track?
by Brian Gardner 19 Oct '08

19 Oct '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=VJrnVy9yOffuMybYkTmJxfVhL3uHFWzqd8tqE97IDB2K4su9u9Jv5WL8cFcN5BNa; h=Received:From:To:In-Reply-To:Subject:References:Message-Id:Content-Type:Content-Transfer-Encoding:Mime-Version:Date:Cc:X-Mailer:X-ELNK-Trace:X-Originating-IP; Hi, Martijn. I do a lot of stereoscopic video & film work. 3-D movies are intensely multi-camera by their very nature. So, I'm glad you asked this question. I wanted to know, too. I was looking into the same issue for a low budget 3-D production, which will be shot with a variety of low cost HD cameras. So, audio timecode is my best option, also. http://www.videotoolshed.com/?page=products&pID=26 Thanks. -- Brian On Oct 19, 2008, at 7:52 AM, Andreas Kiel wrote: Hi Martijn, Regards Andreas On 19.10.2008, at 16:03, Martijn Scholte wrote: hi andreas cheers Martijn also sent from my mac because typing on my iphone is not so fast :) On Oct 19, 2008, at 3:55 PM, Andreas Kiel wrote: Could you be be a more specific? Send from my Mac On 19.10.2008, at 15:31, Martijn Scholte wrote: Hello is this possible in fcp? Sent from my iPhone _______________________________________________ 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/kiel%40spherico.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/brianrg%40earthlink.net _______________________________________________ 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… So far, most of my 3-D movie work has been CGI or big-budget, so it hasn't been as important. But in the low budget arena, this is a big deal. (I've gone the clapper route, already, and it is a time-vampire during editing.) I haven't tried it, yet, so I can't attest to it, but have you looked at this: It looks to be more FCP friendly than most of the other solutions. But, again, I haven't tried it yet. If you try it, please let me know how it works out. You have to go along with "your dutch guy named Bouke from Videotoolshed" - no way in FCP now. yes i can :) i have a ambient lockit a 744t and a ex1 (not the ex3 with genlock and timecode in) i woud like to connect my lockit to the ex1 audio in and let fcp read that time code i now there a few dutch guys who made an app for this but i was hoping it could be don in fcp now This email sent to kiel(a)spherico.com This email sent to brianrg(a)earthlink.net This email sent to site_archiver(a)lists.apple.com

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Re: Timecode from audio track?
by Andreas Kiel 19 Oct '08

19 Oct '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Hi Martijn, Regards Andreas On 19.10.2008, at 16:03, Martijn Scholte wrote: hi andreas cheers Martijn also sent from my mac because typing on my iphone is not so fast :) On Oct 19, 2008, at 3:55 PM, Andreas Kiel wrote: Could you be be a more specific? Send from my Mac On 19.10.2008, at 15:31, Martijn Scholte wrote: Hello is this possible in fcp? _______________________________________________ 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… You have to go along with "your dutch guy named Bouke from Videotoolshed" - no way in FCP now. yes i can :) i have a ambient lockit a 744t and a ex1 (not the ex3 with genlock and timecode in) i woud like to connect my lockit to the ex1 audio in and let fcp read that time code i now there a few dutch guys who made an app for this but i was hoping it could be don in fcp now Sent from my iPhone _______________________________________________ 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/kiel% 40spherico.com This email sent to kiel(a)spherico.com This email sent to site_archiver(a)lists.apple.com

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Re: Timecode from audio track?
by Andreas Kiel 19 Oct '08

19 Oct '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Could you be be a more specific? Send from my Mac On 19.10.2008, at 15:31, Martijn Scholte wrote: Hello is this possible in fcp? _______________________________________________ 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… Sent from my iPhone _______________________________________________ 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/kiel% 40spherico.com This email sent to kiel(a)spherico.com This email sent to site_archiver(a)lists.apple.com

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Timecode from audio track?
by Martijn Scholte 19 Oct '08

19 Oct '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Hello is this possible in fcp? Sent from my iPhone _______________________________________________ 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: FxPlug / OpenGL Smooth Line Artifact
by George King 18 Oct '08

18 Oct '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=arboreality.net; h=Received:Cc:Message-Id:From:To:In-Reply-To:Content-Type:Mime-Version:Subject:Date:References:X-Mailer:X-Identified-User; b=ZRq5Ti5sR6D3MUb3H369F6rGqOYl9TQpgep8fe7X/dAerF+4Rzw2KvsSsRu92i1iESV0oY20D3vt4aI7++lHIqK4/L/u43Qb9dZ3xJfEiDnVVU+L6jgDmtYFhYXPYHsj; On Oct 17, 2008, at 5:12 PM, Darrin Cardani wrote: On Oct 17, 2008, at 5:10 PM, George King wrote: Thanks, George King glClearColor(1,1,1,1); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA); Darrin -- Darrin Cardani dcardani(a)apple.com Hi Darrin, Thanks, _______________________________________________ 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 I am seeing an odd artifact in my FxPlug OpenGL context when I draw a white line on a white background using GL_LINE_SMOOTH. In my test app that uses an NSOpenGL context (with no multisampling), i get pure white. However, when I run the same code in my FxPlug, I get dark artifacts where the line is blending. It looks as though the smooth line rasterizer is fading the color to black as the alpha fades to zero. As an example, take a white line with a small positive slope (almost horizontal). If I disable GL_BLEND, then I see two series of horizontal gradients in a staircase pattern, fading white to black and black to white. If I enable GL_BLEND, then the alpha for each gradient goes to zero as the color goes to black, leaving semi-transparent dark spots for every pixel of vertical rise. I hope that makes some sense! Attached are a few screen shots which should make the problem apparent. Note that this is not affected by glBlendColor, or the GL_TEXTURE_ENV_COLOR; changing either of those does not alter the black coloring. The problem occurs with and without texturing. Below is example code that can be pasted directly into the default FxFilter Xcode project. Insert it just before the glPopAttrib() call. You should also change *canRenderSoftware to NO to force OpenGL use. I'm hoping that I'm just missing some gl state call, but I've been scouring the red book all day to no avail. Let me know if I should post this to the OpenGL list too; I thought I'd ask here first since it works in regular contexts. I think the above is your problem. Since colors in OpenGL are already premultiplied, I think you want to use: Otherwise, you're applying the source alpha twice to the line color. I've always found this really confusing, too, fwiw. That fixes my test case, but unfortunately it introduces a similar problem elsewhere. Now my lines are getting white 'feathers' instead of black. Below is a screenshot from my project; I'll have to work at a better test case. Remember that using (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) works fine in a fresh NSOpenGLContext. I'm not sure what you mean about premultiplication. My limited understanding of that term is that when a function requires premultiplied color data, the color must multiply each color component by the alpha component ahead of time. So the quadruple for 100% red at 50% transparency is (.5, 0, 0, .5). When I want that color in OpenGL I call glColor4f(1, 0, 0, .5). Please let me know if I am misunderstanding the concept. George

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Re: FxPlug / OpenGL Smooth Line Artifact
by Darrin Cardani 18 Oct '08

18 Oct '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com On Oct 17, 2008, at 5:10 PM, George King wrote: Thanks, George King glClearColor(1,1,1,1); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glBlendFunc (GL_ONE, GL_ONE_MINUS_SRC_ALPHA); 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… I am seeing an odd artifact in my FxPlug OpenGL context when I draw a white line on a white background using GL_LINE_SMOOTH. In my test app that uses an NSOpenGL context (with no multisampling), i get pure white. However, when I run the same code in my FxPlug, I get dark artifacts where the line is blending. It looks as though the smooth line rasterizer is fading the color to black as the alpha fades to zero. As an example, take a white line with a small positive slope (almost horizontal). If I disable GL_BLEND, then I see two series of horizontal gradients in a staircase pattern, fading white to black and black to white. If I enable GL_BLEND, then the alpha for each gradient goes to zero as the color goes to black, leaving semi-transparent dark spots for every pixel of vertical rise. I hope that makes some sense! Attached are a few screen shots which should make the problem apparent. Note that this is not affected by glBlendColor, or the GL_TEXTURE_ENV_COLOR; changing either of those does not alter the black coloring. The problem occurs with and without texturing. Below is example code that can be pasted directly into the default FxFilter Xcode project. Insert it just before the glPopAttrib() call. You should also change *canRenderSoftware to NO to force OpenGL use. I'm hoping that I'm just missing some gl state call, but I've been scouring the red book all day to no avail. Let me know if I should post this to the OpenGL list too; I thought I'd ask here first since it works in regular contexts. I think the above is your problem. Since colors in OpenGL are already premultiplied, I think you want to use: Otherwise, you're applying the source alpha twice to the line color. I've always found this really confusing, too, fwiw. This email sent to site_archiver(a)lists.apple.com

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FxPlug / OpenGL Smooth Line Artifact
by George King 18 Oct '08

18 Oct '08

site_archiver(a)lists.apple.com Delivered-To: pro-apps-dev(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=arboreality.net; h=Received:Message-Id:From:To:In-Reply-To:Content-Type:Mime-Version:Subject:Date:References:X-Mailer:X-Identified-User; b=VUw9XwyYb4IMGQi/+G8qGyyQ0w1WhIrvSpxXHrFpgZyPZyglYpgaF7nDlpYMG8BteLdRlEvCh+1GSb2I9HCgJql91dGSzUV7Xu/e4zmc5/pHuicGvEq7/fWwpLK76hHl; Hello, Thanks, George King glClearColor(1,1,1,1); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glEnable(GL_LINE_SMOOTH); glHint(GL_LINE_SMOOTH_HINT, GL_NICEST); glLineWidth(1); glColor(1,1,1,1); glBegin(GL_LINES); glVertex2f(0,0); glVertex2f(100, 1000); glEnd(); blend disabled w/ red bg: _______________________________________________ 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 I am seeing an odd artifact in my FxPlug OpenGL context when I draw a white line on a white background using GL_LINE_SMOOTH. In my test app that uses an NSOpenGL context (with no multisampling), i get pure white. However, when I run the same code in my FxPlug, I get dark artifacts where the line is blending. It looks as though the smooth line rasterizer is fading the color to black as the alpha fades to zero. As an example, take a white line with a small positive slope (almost horizontal). If I disable GL_BLEND, then I see two series of horizontal gradients in a staircase pattern, fading white to black and black to white. If I enable GL_BLEND, then the alpha for each gradient goes to zero as the color goes to black, leaving semi-transparent dark spots for every pixel of vertical rise. I hope that makes some sense! Attached are a few screen shots which should make the problem apparent. Note that this is not affected by glBlendColor, or the GL_TEXTURE_ENV_COLOR; changing either of those does not alter the black coloring. The problem occurs with and without texturing. Below is example code that can be pasted directly into the default FxFilter Xcode project. Insert it just before the glPopAttrib() call. You should also change *canRenderSoftware to NO to force OpenGL use. I'm hoping that I'm just missing some gl state call, but I've been scouring the red book all day to no avail. Let me know if I should post this to the OpenGL list too; I thought I'd ask here first since it works in regular contexts. blend enabled w/ white bg:

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