A description of a conversion from one image format to another.
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 4.0+
v class is an opaque type that contains information needed to do a rapid conversion from one image type to another.
You use the converter creation functions, for example,
v, to create instances of converters. Sometimes, there can be an overhead when creating a converter, so create them in advance and reuse them. Converters are thread safe; that is, you can use the same object concurrently in multiple threads.