I'm updating my code from Carbon to Cocoa, and finding a dramatic slowdown when
using QTKitMovieMBS to get a movie frame, as opposed to EditableMovie.Picture
With this code:
while currentTime <= maxTime
#if TargetCocoa
dim p as picture
dim qttime as QTKitTimeMBS = new QTKitTimeMBS(currentTime,600) // time @
timescale
dim nsi as NSImageMBS = qm.FrameImageAtTime(qttime)
p = nsi.copyPicture
#else // carbon or win32
em.Position = currentTime
dim p as picture = em.Picture
#endif
dim p2 as new picture(128,128,32)
p2.graphics.drawPicture p,0,0,p2.width,p2.height,0,0,p.width,p.height //
stretch p onto p2's size
currentTime = currentTime + frameDuration
wend
I'm seeing that the Carbon version is about 20x faster than the Cocoa version.
Any idea why?
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