I've added a "frame grab" feature to QCTV, and it works fine...
except for one really weird problem (unrelated to PPC/Intel).
In FrameMovieExporter.m, in method -exportFrame:timeStamp: (bottom of
file),
1) I make a CIImage from the 'frame' variable (a CVPixelBufferRef)
2) Then I make an NSImage from the CIImage
3) Then I write out the NSImage to disk
This all works great, except when I have the video display width set
to an exact power of two: 128, 256, 512, 1024, or 2048! When I try to
make an NSImage of the frame with these widths, I get diagonal bars
(as though the frame is too large, and the scan lines are wrapping).
But all widths in between these seem to work perfectly (e.g., 1025,
etc.). What is causing this?
Roland
For completeness, below is my CIImage category for method -makeNSImage.
