Function

vImageConvert_BGRA16UtoRGB16U(_:_:_:)

Converts a BGRA16 image to an RGB16U image.

Declaration

func vImageConvert_BGRA16UtoRGB16U(_ bgraSrc: UnsafePointer<vImage_Buffer>, _ rgbDest: UnsafePointer<vImage_Buffer>, _ flags: vImage_Flags) -> vImage_Error

Parameters

rgbaSrc

A pointer to a vImage buffer structure that contains the BGRA interleaved source pixels.

rgbDest

A pointer to a vImage buffer data structure. You're responsible for filling out the height, width, and rowBytes fields 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.

flags

The options to use when performing the operation. If you plan to perform your own tiling or use multithreading, pass kvImageDoNotTile.

Return Value

kvImageNoError; otherwise, one of the error codes described in Data Types and Constants.

Discussion

The conversion from BGRA16 to RGB16U is:

 rgbDest[i*3+0] = rgbaSrc[i*4+2];
 rgbDest[i*3+1] = rgbaSrc[i*4+1];
 rgbDest[i*3+2] = rgbaSrc[i*4+0];

This function doesn't operate in place.