I have written and used the code to get the colors from CGImage and it worked fine up to iOS16.
However, when I use the same code in iOS17, Red and Blue out of RGB are reversed.
Is this a temporary bug in the OS and will it be fixed in the future? Or has the specification changed and will it remain this way after iOS17?
Here is my code:
let pixelDataByteSize = 4
guard let cfData = image.cgImage?.dataProvider?.data else { return }
let pointer:UnsafePointer = CFDataGetBytePtr(cfData)
let scale = UIScreen.main.nativeScale
let address = ( Int(image.size.width * scale) * Int(image.size.height * scale / 2) + Int(image.size.width * scale / 2) ) * pixelDataByteSize
let r = CGFloat(pointer[address]) / 255
let g = CGFloat(pointer[address+1]) / 255
let b = CGFloat(pointer[address+2]) / 255