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mlib_VideoColorYUV420seq_to_ABGRint

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
Index Return to Main Contents
 

NAME

mlib_VideoColorYUV420seq_to_ABGRint - color convert YUV sequential to ABGR interleaved  

SYNOPSIS

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

void mlib_VideoColorYUV420seq_to_ABGRint(mlib_u32 *ABGR,
    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 ABGR 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 ABGR use successive rows of Y and the same rows of U and V.

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

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

ABGR

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:

ATTRIBUTE TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

mlib_VideoColorYUV420seq_to_ARGBint(3MLIB), mlib_VideoColorYUV411seq_to_ARGBint(3MLIB), mlib_VideoColorYUV422seq_to_ARGBint(3MLIB), mlib_VideoColorYUV444seq_to_ARGBint(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)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:12 GMT, October 02, 2010