vImageCVImageFormat_GetUserData(_:)
Returns the user data of a Core Video image format.
Declaration
func vImageCVImageFormat_GetUserData(_ format: vImageConstCVImageFormat) -> UnsafeMutableRawPointer!Parameters
- format:
The Core Video image format to query.
Return Value
The address of userData; NULL if userData isn’t set.
Discussion
The functions that create Core Video image formats, such as vImageCVImageFormat_CreateWithCVPixelBuffer(_:), return a vImageCVImageFormat. The following code shows how you create a vImageConstCVImageFormat representation of a vImageCVImageFormat instance to pass to vImageCVImageFormat_GetUserData(_:):