mlib_VideoColorYUV420seq_to_ARGBint

- color convert YUV sequential to ARGB interleaved

Synopsis

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

void mlib_VideoColorYUV420seq_to_ARGBint(mlib_u32 *ARGB,
     const mlib_u8 *Y,const mlib_u8 *U, const mlib_u8 *V,
     const mlib_u8 *A_array, mlib_u8 A_const,
     mlib_s32 w, mlib_s32 h, mlib_s32 dlb,
     mlib_s32 yalb, mlib_s32 uvlb);

Description

The Y, U, V pixel streams are converted into an ARGB pixel stream. All pixel components are 8-bit unsigned integers. The Y buffer has dimensions w and h. The U and V buffers have dimensions w/2 and h/2. Dimensions w and h are assumed to be even. Successive rows of the output buffer ARGB use successive rows of Y and the same rows of U and V.

The alpha values for this function work in the following fashion:

• If A_array pointer is not NULL, the values are taken from there. It has to have the same dimensions as the Y buffer.

• If A_array pointer is NULL, the alpha values for every pixel are set to A_const.

The following equation is used:

|R|   |1.1644  0.0000  1.5966|   [|Y|   | 16.0000|]
|G| = |1.1644 -0.3920 -0.8132| * [|U| - |128.0000|]
|B|   |1.1644  2.0184  0.0000|   [|V|   |128.0000|]

Parameters

The function takes the following arguments:

ARGB

Pointer to output buffer.

Y

Pointer to Y input buffer.

U

Pointer to U input buffer.

V

Pointer to V input buffer.

A_array

Array of alpha values.

A_const

Constant alpha value.

w

Image width in pixels.

h

Image height in lines.

dlb

Linebytes for output buffer.

yalb

Linebytes for Y and alpha buffers.

uvlb

Linebytes for U and V buffers.

Return Values

None.

Attributes

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

See Also

mlib_VideoColorYUV411seq_to_ARGBint(3MLIB), mlib_VideoColorYUV422seq_to_ARGBint(3MLIB), mlib_VideoColorYUV444seq_to_ARGBint(3MLIB), mlib_VideoColorYUV420seq_to_ABGRint(3MLIB), mlib_VideoColorYUV411seq_to_ABGRint(3MLIB), mlib_VideoColorYUV422seq_to_ABGRint(3MLIB), mlib_VideoColorYUV444seq_to_ABGRint(3MLIB), mlib_VideoColorYUYV422int_to_ARGBint(3MLIB), mlib_VideoColorYUV444int_to_ARGBint(3MLIB), mlib_VideoColorYUYV422int_to_ABGRint(3MLIB), mlib_VideoColorYUV444int_to_ABGRint(3MLIB), mlib_VideoColorUYVY422int_to_ARGBint(3MLIB), mlib_VideoColorUYVY422int_to_ABGRint(3MLIB), mlib_VideoColorUYV444int_to_ARGBint(3MLIB), mlib_VideoColorUYV444int_to_ABGRint(3MLIB), attributes(5)