Function

vImageConvert_RGB16UToARGB8888(_:_:_:_:_:_:)

Converts and permutes an RGB16U image into an ARGB8888 image.

Declaration

func vImageConvert_RGB16UToARGB8888(_ src: UnsafePointer<vImage_Buffer>, _ dest: UnsafePointer<vImage_Buffer>, _ permuteMap: UnsafePointer<UInt8>, _ copyMask: UInt8, _ backgroundColor: UnsafePointer<UInt8>, _ flags: vImage_Flags) -> vImage_Error

Parameters

src

A pointer to a vImage buffer structure that contains the source image.

dest

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.

permuteMap

An array of four 8-bit integers with the values 0, 1, and 2, in some order. Each value specifies a channel from the source image that should be copied to that channel in the destination image. 0 denotes the red channel, 1 the green channel, and 2 the blue channel. 

copyMask

A mask to choose between the result and the backgroundColor.

  • 1000 uses the first channel of backgroundColor as the value of channel A in the result.

  • 0100 uses the second channel of backgroundColor as the value of channel R in the result.

  • 0010 uses the third channel of backgroundColor as the value of channel G in the result.

  • 0001 uses the fourth channel of backgroundColor as the value of channel B in the result.

backgroundColor

A pointer to 8-bit ARGB values that replace the result pixels based on the copy mask.

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

This function doesn't work in place.

See Also

Converting from RGB Formats

func vImageConvert_RGB565toRGBA5551(UnsafePointer<vImage_Buffer>, UnsafePointer<vImage_Buffer>, Int32, vImage_Flags) -> vImage_Error

Converts an RGB565 image to an RGBA5551 image with dithering, setting destination alpha to one.

func vImageConvert_RGB565toARGB1555(UnsafePointer<vImage_Buffer>, UnsafePointer<vImage_Buffer>, Int32, vImage_Flags) -> vImage_Error

Converts an RGB565 image to an ARGB1555 image with dithering, setting destination alpha to one.

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