Converts an RGBA16U image to an RGB16U image.


func vImageConvert_RGBA16UtoRGB16U(_ rgbaSrc: UnsafePointer<vImage_Buffer>, _ rgbDest: UnsafePointer<vImage_Buffer>, _ flags: vImage_Flags) -> vImage_Error



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


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.


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.


The conversion from RGBA16 to RGB16U is:

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

This function doesn't operate in place.

See Also

Converting from RGBA Formats

func vImageConvert_RGBAFFFFtoRGBFFF(UnsafePointer<vImage_Buffer>!, UnsafePointer<vImage_Buffer>!, vImage_Flags) -> vImage_Error

Converts a four-channel RGBAFFFF image to a three-channel RGBFFF image by removing the alpha channel.

func vImageConvert_RGBA8888toRGB888(UnsafePointer<vImage_Buffer>, UnsafePointer<vImage_Buffer>, vImage_Flags) -> vImage_Error

Converts a four-channel RGBA8888 image to a three-channel RGB888 image by removing the alpha channel.