Function

vImageConvert_RGBA8888toRGB888(_:_:_:)

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

Declaration

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

Parameters

rgbaSrc

A pointer to a vImage buffer structure that contains the source image whose data you want to convert.

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 red, green, and blue channels are simply copied. This function can be used 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.