man pages section 3: Multimedia Library Functions
Updated: July 2014

## mlib_VideoColorYUV411seq_to_YUYV422int(3MLIB)

### Name

mlib_VideoColorYUV411seq_to_YUYV422int - convert YUV sequential to interleaved

### Synopsis

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

void mlib_VideoColorYUV411seq_to_YUYV422int(mlib_u32 *YUYV,
const mlib_u8 *Y,const mlib_u8 *U, const mlib_u8 *V,
mlib_s32 w, mlib_s32 h, mlib_s32 dlb,
mlib_s32 ylb, mlib_s32 uvlb);```

### Description

The Y, U, V pixel streams are combined into a YUYV 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/4 and h. Dimension w is assumed to be a multiple of 4. In each row, every 4 Y values use the same U and V values.

The following equation is used:

```YUYV[r][c/2]   = (Y[r][c]   << 24) |
(U[r][c/4] << 16) |
(Y[r][c+1] << 8) |
(V[r][c/4])

YUYV[r][c/2+1] = (Y[r][c+2] << 24) |
(U[r][c/4] << 16) |
(Y[r][c+3] << 8) |
(V[r][c/4])```

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

### Parameters

The function takes the following arguments:

YUYV

Pointer to output buffer.

Y

Pointer to Y input buffer.

U

Pointer to U input buffer.

V

Pointer to V input buffer.

w

Image width in pixels.

h

Image height in lines.

dlb

Linebytes for YUYV buffer.

ylb

Linebytes for Y buffer.

uvlb

Linebytes for U and V buffers.

None.

### Attributes

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

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Interface Stability
Committed
MT-Level
MT-Safe