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Re: QTMovie->PICT->NSImage
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Re: QTMovie->PICT->NSImage


  • Subject: Re: QTMovie->PICT->NSImage
  • From: Tristan Harris <email@hidden>
  • Date: Sat, 22 Jun 2002 15:10:29 -0700

Related to this same issue, my application was supposedly generating a memory leak using this technique of QTMovie->PICT->NSImage translation and drawing. I've spent the last two days trying to track down this leak, but have been unsuccessful. I think that this leak may possibly be caused by an Apple OS bug. To test this theory, I wrote a simple MoviePlayer application no longer than 120 lines that uses this translation from QTMovie to eventually an NSImage to draw each frame. The leak still exists.. without the baggage of the rest of my application. I've posted the project at:

http://www.stanford.edu/~tristanh/downloads/MoviePlayer.sit

Could someone please download it and verify this issue... it includes a very small amount of source code.

Thanks,
Tristan


On Thursday, June 20, 2002, at 01:51 AM, Cameron Hayne wrote:

Tristan Harris <email@hidden> wrote:
loading the movie into an NSMovie, getting a PicHandle from the movie -
GetMoviePict(), making an NSPICTImageRep, drawing the imagerep into an
NSImage, doing an operation on the NSImage, then drawing it to the
window. This of course works, but is *VERY* CPU intensive.

Maybe you could avoid the step where you draw the ImageRep into the NSImage
- just do your operation on the ImageRep and then ask it to draw itself in the window.
No need for an NSImage.

... Cameron
--
Cameron Hayne (email@hidden)
Hayne of Tintagel
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  • Follow-Ups:
    • Re: QTMovie->PICT->NSImage
      • From: Vince DeMarco <email@hidden>
References: 
 >Re: QTMovie->PICT->NSImage Performance (From: Cameron Hayne <email@hidden>)

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