mlib_videosumabsdiff(3mlib) [sunos man page]

mlib_VideoSumAbsDiff(3MLIB)				    mediaLib Library Functions				       mlib_VideoSumAbsDiff(3MLIB)

NAME

       mlib_VideoSumAbsDiff - motion estimation

SYNOPSIS

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

       mlib_s32 mlib_VideoSumAbsDiff(mlib_u8 *curr_block, const mlib_u8 *ref_block, mlib_s32 width, mlib_s32 height, mlib_s32 stride);

DESCRIPTION

       The  mlib_VideoSumAbsDiff() function computes the sum of absolute differences between the pixels in the current block and the corresponding
       pixels in the reference block.

       Both the current block and the reference block belong to frames with the same dimension. (The stride is applicable to both.) Motion estima-
       tion  computes  the  sum of the absolute differences between the current block and reference blocks at different locations in the reference
       frame, choosing the best fit (least sum of absolute difference) to calculate the motion vector.

PARAMETERS

       The function takes the following arguments:

       curr_block      Pointer to the current block. curr_block must be 8-byte aligned.

       ref_block       Pointer to the reference block.

       width	       Width of the block.

       height	       Height of the block.

       stride	       Stride, in bytes, between adjacent rows in a block. stride must be a multiple of eight.

RETURN VALUES

       The function returns a value of type mlib_s32.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

SunOS 5.10							    9 Nov 2004					       mlib_VideoSumAbsDiff(3MLIB)

mlib_VideoCopyRefAve_U8_U8_16x16(3MLIB) 		    mediaLib Library Functions			   mlib_VideoCopyRefAve_U8_U8_16x16(3MLIB)

NAME

       mlib_VideoCopyRefAve_U8_U8_16x16,    mlib_VideoCopyRefAve_U8_U8_16x8,	mlib_VideoCopyRefAve_U8_U8_8x16,   mlib_VideoCopyRefAve_U8_U8_8x8,
       mlib_VideoCopyRefAve_U8_U8_8x4 - copies and averages a block from the reference block to the current block

SYNOPSIS

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

       mlib_status mlib_VideoCopyRefAve_U8_U8_16x16(mlib_u8 *curr_block, const mlib_u8 *ref_block, mlib_s32 stride);

       mlib_status mlib_VideoCopyRefAve_U8_U8_16x8(mlib_u8 *curr_block, const mlib_u8 *ref_block, mlib_s32 stride);

       mlib_status mlib_VideoCopyRefAve_U8_U8_8x16(mlib_u8 *curr_block, const mlib_u8 *ref_block, mlib_s32 stride);

       mlib_status mlib_VideoCopyRefAve_U8_U8_8x8(mlib_u8 *curr_block, const mlib_u8 *ref_block, mlib_s32 stride);

       mlib_status mlib_VideoCopyRefAve_U8_U8_8x4(mlib_u8 *curr_block, const mlib_u8 *ref_block, mlib_s32 stride);

DESCRIPTION

       Each of these functions copies and averages a block from the reference block to the current block. The stride applies  to  both	the  input
       reference block and the current block.

PARAMETERS

       Each of the functions takes the following arguments:

       curr_block      Pointer to the current block. curr_block must be 8-byte aligned.

       ref_block       Pointer to the reference block.

       stride	       Stride,	in  bytes,  between  adjacent rows in both the current block and the reference block. stride must be a multiple of
		       eight.

RETURN VALUES

       Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_VideoAddBlock_U8_S16(3MLIB),       mlib_VideoCopyRef_S16_U8(3MLIB),       mlib_VideoCopyRef_S16_U8_16x16(3MLIB),	   mlib_VideoCopy-
       Ref_U8_U8_16x16(3MLIB),	      mlib_VideoCopyRefAve_U8_U8(3MLIB),       mlib_VideoH263OverlappedMC_S16_U8(3MLIB),       mlib_VideoH263Over-
       lappedMC_U8_U8(3MLIB),  mlib_VideoInterpAveX_U8_U8(3MLIB),   mlib_VideoInterpAveX_U8_U8_16x16(3MLIB),   mlib_VideoInterpAveXY_U8_U8(3MLIB),
       mlib_VideoInterpAveXY_U8_U8_16x16(3MLIB),    mlib_VideoInterpAveY_U8_U8(3MLIB),	 mlib_VideoInterpAveY_U8_U8_16x16(3MLIB),   mlib_VideoInt-
       erpX_S16_U8(3MLIB), mlib_VideoInterpX_S16_U8_16x16(3MLIB), mlib_VideoInterpX_U8_U8(3MLIB), mlib_VideoInterpXY_S16_U8(3MLIB), mlib_VideoInt-
       erpXY_S16_U8_16x16(3MLIB),    mlib_VideoInterpXY_U8_U8(3MLIB),	 mlib_VideoInterpXY_U8_U8_16x16(3MLIB),   mlib_VideoInterpY_S16_U8(3MLIB),
       mlib_VideoInterpY_S16_U8_16x16(3MLIB),	  mlib_VideoInterpY_U8_U8(3MLIB),     mlib_VideoInterpY_U8_U8_16x16(3MLIB),	mlib_VideoP64Deci-
       mate_U8_U8(3MLIB), mlib_VideoP64Loop_S16_U8(3MLIB), mlib_VideoP64Loop_U8_U8(3MLIB), attributes(5)

SunOS 5.10							    9 Nov 2004				   mlib_VideoCopyRefAve_U8_U8_16x16(3MLIB)