opensolaris man page for mlib_videocoloryuv444seq_to_uyvy422int

mlib_VideoColorYUV444seq_to_UYVY422int(3MLIB)		    mediaLib Library Functions		     mlib_VideoColorYUV444seq_to_UYVY422int(3MLIB)

NAME
       mlib_VideoColorYUV444seq_to_UYVY422int - convert YUV sequential to interleaved with subsampling

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

       void mlib_VideoColorYUV444seq_to_UYVY422int(mlib_u32 *UYVY,
	    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 UYVY 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  val-
       ues.

       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.

       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_YUYV422int(3MLIB),		      mlib_VideoColorYUV444int_to_YUYV422int(3MLIB),		    mlib_VideoCol-
       orYUV444int_to_UYVY422int(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007			     mlib_VideoColorYUV444seq_to_UYVY422int(3MLIB)