Returns the attributes of pixel buffers that will be created from this pool.
- iOS 4.0+
- macOS 10.4+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
- Core Video
The pixel buffer pool whose attributes are to be retrieved.
A Core Foundation dictionary containing the pixel buffer attributes, or
NULL on failure.
Use this function to obtain information about the buffers that will be created for you .