mlib_VideoColorRGBXint_to_ABGRint

- convert RGBX interleaved to ABGR interleaved

Synopsis

cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>

void mlib_VideoColorRGBXint_to_ABGRint(mlib_u32 *ABGR,
     const mlib_u32 *RGBX, const mlib_u8 *A_array,
     mlib_u8 A_const, mlib_s32 w,
     mlib_s32 h, mlib_s32 dlb,
     mlib_s32 slb, mlib_s32 alb);

Description

The interleaved RGBX stream and the alpha values are combined into an interleaved A, B, G, R output stream. Within each 32-bit input pixel, the component ordering is R (bits 31-24), G (bits 23-16), and B (bits 15-8). Within each 32-bit output pixel, the component bordering is A (bits 31-24), B (bits 23-16), G (bits 15-8), and R (bits 7-0). The alpha values for this function work in the following fashion: if A_array is not NULL, the values are taken from the corresponding locations in the alpha array, otherwise a constant alpha value, specified by A_const, is store in each output pixel. Each element in the alpha array is an unsigned byte. w and h define the dimensions of the region of the buffers to be processed. The linebyte parameters are used to advance the data pointers for each of the buffers.

Parameters

The function takes the following arguments:

ABGR

Pointer to output buffer (word-aligned).

RGBX

Pointer to input buffer (word-aligned).

A_array

Pointer to array of alpha values (byte-aligned).

A_const

Constant alpha value (range = 0..255).

w

Image width in pixels.

h

Image height in lines.

dlb

Linebytes for output buffer.

slb

Linebytes for input buffer.

alb

Linebytes for alpha buffer.

Return Values

None.

Attributes

See attributes(5) for descriptions of the following attributes:

See Also

mlib_VideoColorRGBseq_to_ABGRint(3MLIB), mlib_VideoColorRGBint_to_ABGRint(3MLIB), mlib_VideoColorBGRint_to_ABGRint(3MLIB), mlib_VideoColorRGBXint_to_ARGBint(3MLIB), mlib_VideoColorXRGBint_to_ABGRint(3MLIB), mlib_VideoColorXRGBint_to_ARGBint(3MLIB), attributes(5)