mlib_VideoColorUYV444int_to_UYVY422int(3MLIB)

Name

mlib_VideoColorUYV444int_to_UYVY422int - convert UYV interleaved with subsampling

Synopsis

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

void mlib_VideoColorUYV444int_to_UYVY422int(mlib_u32 *UYVY,
     const mlib_u8 *UYV, mlib_s32 w,mlib_s32 h, mlib_s32 dlb,
     mlib_s32 slb);

Description

The UYV pixel stream is broken apart and recombined into a UYVY pixel stream. All pixel components are 8-bit unsigned integers. The UYV 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 U[r][c], Y[r][c], V[r][c], U[r][c+1], Y[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.

UYV

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

See also

mlib_VideoColorYUV444seq_to_YUYV422int(3MLIB), mlib_VideoColorYUV444int_to_YUYV422int(3MLIB), mlib_VideoColorYUV444seq_to_UYVY422int(3MLIB), mlib_VideoColorYUV444int_to_UYVY422int(3MLIB), mlib_VideoColorUYV444int_to_YUYV422int(3MLIB), attributes(5)