opensolaris man page for mlib_videocoloryuv420seq_to_uyvy422int

mlib_VideoColorYUV420seq_to_UYVY422int(3MLIB)		    mediaLib Library Functions		     mlib_VideoColorYUV420seq_to_UYVY422int(3MLIB)

NAME
       mlib_VideoColorYUV420seq_to_UYVY422int - convert YUV sequential to interleaved

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

       void mlib_VideoColorYUV420seq_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 ylb, mlib_s32 uvlb);

DESCRIPTION
       The  Y, U, V pixel streams are combined into a UYVY pixel stream. All pixel components are 8-bit unsigned integers. The Y buffer has dimen-
       sions w and h. The U and V buffers have dimensions w/2 and h/2. Dimensions w and h are assumed to be even. Successive rows  of  the  output
       buffer UYVY use successive rows of Y and the same rows of U and V.

       The following equation is used:

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

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

       where r = 0, 2, 4, ..., h-2; 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 UYVY buffer.

       ylb     Linebytes for Y buffer.

       uvlb    Linebytes for U and V 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_VideoColorYUV420seq_to_YUYV422int(3MLIB),		      mlib_VideoColorYUV411seq_to_YUYV422int(3MLIB),		    mlib_VideoCol-
       orYUV422seq_to_YUYV422int(3MLIB),       mlib_VideoColorYUV411seq_to_UYVY422int(3MLIB),	    mlib_VideoColorYUV422seq_to_UYVY422int(3MLIB),
       attributes(5)

SunOS 5.11							    2 Mar 2007			     mlib_VideoColorYUV420seq_to_UYVY422int(3MLIB)