Converts a 16U format image to a 16Q12 format image.
SDKs
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Accelerate
Declaration
func vImageConvert_16Uto16Q12(_ src: UnsafeParameters
srcA pointer to a vImage buffer structure that contains the source image whose data you want to convert.
destA pointer to a vImage buffer data structure. You're responsible for filling out the
height,width, androwfields of this structure, and for allocating a data buffer of the appropriate size. On return, the data buffer this structure points to contains the destination image data. When you no longer need the data buffer, you must deallocate the memory.Bytes flagsThe options to use when performing the operation. If you plan to perform your own tiling or use multithreading, pass
kv.Image Do Not Tile
Return Value
kv; otherwise, one of the error codes described in Data Types and Constants.
Discussion
Source pixel values of 0 are mapped to 0, and source pixel values of (Pixel_16Q12) 4096 is mapped to (Pixel_16U) 65535.
This routine works in place provided that src->data == dest->data && src->row.