That does look like a bug in the conversion, can you tell me what
version of OS X and what version of QuickTime you have?
On Aug 5, 2008, at 6:10 AM, Christopher Wright wrote:
I've got a QCRenderer that I init offscreen
(initOffScreenWithSize: ...), with the this colorspace:
CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
If I render a composition and take a snapshot with CIImage, like
this, the output image is incorrectly colored.
CIImage *ciframe = [renderer createSnapshotImageOfType: @"CIImage"];
NSBitmapImageRep *nsibir = [[NSBitmapImageRep alloc]
initWithCIImage: ciframe];
[[nsibir representationUsingType: NSPNGFileType properties: nil]
writeToFile: @"/Users/cwright/desktop/image.png" atomically: NO];
[nsibir release];
output Image:
<image-ciimage.png>
But If I take a snapshot with CGImage, the output file is correct:
CGImageRef cgframe = [renderer createSnapshotImageOfType: @"CGImage"];
NSBitmapImageRep *nsibir = [[NSBitmapImageRep alloc]
initWithCGImage: cgframe];
[[nsibir representationUsingType: NSPNGFileType properties: nil]
writeToFile: @"/Users/cwright/desktop/image.png" atomically: NO];
[nsibir release];
Output Image:
<image-cgimage.png>
This looks like a simple color channel swizzling issue (ARGB vs
BGRA), but I'm wondering if this is a bug in the snapshot code, or
if I'm omitting something simple to compensate for this...
--
[ christopher wright ]
[EMAIL PROTECTED]
http://kineme.net/
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