CVImageBufferGetCleanRect(_:)
Returns the source rectangle of a Core Video image buffer that represents the clean aperture of the buffer in encoded pixels.
Declaration
func CVImageBufferGetCleanRect(_ imageBuffer: CVImageBuffer) -> CGRectParameters
- imageBuffer:
The image buffer containing the clean aperture to retrieve.
Return Value
A CGRect structure returning the nominal display size of the image buffer. The size is zero if you pass a value for the image buffer that isn’t a CVImageBuffer type.
Discussion
The clean aperture size is smaller than the full size of the image. For example, for an NTSC DV frame, this function returns a CGRect structure with an origin of (8,0) and a size of 704 x 480.