mlib_VideoColorYUV444seq_to_YUYV422int(3MLIB)

Name

mlib_VideoColorYUV444seq_to_YUYV422int - convert YUV sequential to interleaved with subsampling

Synopsis

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

void mlib_VideoColorYUV444seq_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 slb);

Description

The Y, U, V pixel streams are combined into a YUYV pixel stream. All pixel components are 8-bit unsigned integers. The Y, U, and V buffers have 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 following equation is used:

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

where r = 0, 1, 2, ..., h-1; 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 output buffer.

slb

Linebytes for input buffers.

Return Values

None.

Attributes

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

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

See also

mlib_VideoColorYUV444seq_to_UYVY422int(3MLIB), mlib_VideoColorYUV444int_to_YUYV422int(3MLIB), mlib_VideoColorYUV444int_to_UYVY422int(3MLIB), attributes(5)