# CVTransferFunctionGetStringForIntegerCodePoint(_:) Returns the Core Video transfer function string corresponding to the standard integer code point that you specify. ``` func CVTransferFunctionGetStringForIntegerCodePoint(_ transferFunctionCodePoint: Int32) -> Unmanaged? ``` ## Parameters `transferFunctionCodePoint` The standard integer code point. ## Return Value The transfer function string corresponding to the code point (See [Image Buffer Transfer Function Constants](/documentation/CoreVideo/image-buffer-transfer-function-constants) for possible values.), or if the code point is `2` (unknown) or the system doesn’t recognize it. ## Discussion --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)