opensolaris man page for mlib_videocoloryuv444int_to_yuyv422int

mlib_VideoColorYUV444int_to_YUYV422int(3MLIB)		    mediaLib Library Functions		     mlib_VideoColorYUV444int_to_YUYV422int(3MLIB)

NAME
       mlib_VideoColorYUV444int_to_YUYV422int - convert YUV interleaved with subsampling

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

       void mlib_VideoColorYUV444int_to_YUYV422int(mlib_u32 *YUYV,
	    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 YUYV 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:

	 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.

       YUV     Pointer to 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_YUYV422int(3MLIB),		      mlib_VideoColorYUV444seq_to_UYVY422int(3MLIB),		    mlib_VideoCol-
       orYUV444int_to_UYVY422int(3MLIB),       mlib_VideoColorUYV444int_to_YUYV422int(3MLIB),	    mlib_VideoColorUYV444int_to_UYVY422int(3MLIB),
       attributes(5)

SunOS 5.11							    2 Mar 2007			     mlib_VideoColorYUV444int_to_YUYV422int(3MLIB)