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mlib_VideoColorYUV444int_to_UYVY422int

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

NAME

mlib_VideoColorYUV444int_to_UYVY422int - convert YUV interleaved with subsampling  

SYNOPSIS

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

void mlib_VideoColorYUV444int_to_UYVY422int(mlib_u32 *UYVY,
    const mlib_u8 *YUV, mlib_s32 w, mlib_s32 h, mlib_s32 dlb,
    mlib_s32 slb);

 

DESCRIPTION

The YUV pixel stream is broken apart and recombined into a UYVY pixel stream. All pixel components are 8-bit unsigned integers. The YUV buffer has dimensions w and h. Dimension w is assumed to be a multiple of 2. Adjacent U and V values are averaged to get the output U and V values. The sequence of values in the input stream is Y[r][c], U[r][c], V[r][c], Y[r][c+1], U[r][c+1], V[r][c+1], ...

The following equation is used:

UYVY[r][c/2] = (((U[r][c] + U[r][c+1]) / 2) << 24) |
              (Y[r][c] << 16) |
              (((V[r][c] + V[r][c+1]) / 2) << 8) |
              (Y[r][c+1])

where r = 0, 1, 2, ..., h-1; and c = 0, 2, 4, ..., w-2.  

PARAMETERS

The function takes the following arguments:

UYVY

Pointer to output buffer.

YUV

Pointer to input buffer.

w

Image width in pixels.

h

Image height in lines.

dlb

Linebytes for output buffer.

slb

Linebytes for input buffer.

 

RETURN VALUES

None.  

ATTRIBUTES

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

ATTRIBUTE TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

mlib_VideoColorYUV444seq_to_YUYV422int(3MLIB), mlib_VideoColorYUV444int_to_YUYV422int(3MLIB), mlib_VideoColorYUV444seq_to_UYVY422int(3MLIB), mlib_VideoColorUYV444int_to_YUYV422int(3MLIB), mlib_VideoColorUYV444int_to_UYVY422int(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:37:54 GMT, October 02, 2010