Synopsis

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

mlib_status mlib_VideoH263OverlappedMC_U8_U8(mlib_u8 *curr_block,
     const mlib_u8 *ref_frame, mlib_s32 mch, mlib_s32 mcv, mlib_s32 mah,
     mlib_s32 mav, mlib_s32 mbh, mlib_s32 mbv, mlib_s32 mlh, mlib_s32 mlv,
     mlib_s32 mrh, mlib_s32 mrv, mlib_s32 curr_stride,
     mlib_s32 ref_stride);

Description

The mlib_VideoH263OverlappedMC_U8_U8() function generates an 8x8 luminance prediction block (motion-compensated block) in the Advanced Prediction Mode for H.263 codec. The reference frame in this function is an interpolated frame.

The following equation is used:

for x = 0, 1, 2, 3; y = 0, 1, 2, 3

    curr(x, y) = (ref(2x + mch, 2y + mcv)*H0(x, y) +
                  ref(2x + mah, 2y + mav)*H1(x, y) +
                  ref(2x + mlh, 2y + mlv)*H2(x, y)) / 8;

for x = 4, 5, 6, 7; y = 0, 1, 2, 3

    curr(x, y) = (ref(2x + mch, 2y + mcv)*H0(x, y) +
                  ref(2x + mah, 2y + mav)*H1(x, y) +
                  ref(2x + mrh, 2y + mrv)*H2(x, y)) / 8;

for x = 0, 1, 2, 3; y = 4, 5, 6, 7

    curr(x, y) = (ref(2x + mch, 2y + mcv)*H0(x, y) +
                  ref(2x + mbh, 2y + mbv)*H1(x, y) +
                  ref(2x + mlh, 2y + mlv)*H2(x, y)) / 8;

for x = 4, 5, 6, 7; y = 4, 5, 6, 7

    curr(x, y) = (ref(2x + mch, 2y + mcv)*H0(x, y) +
                  ref(2x + mbh, 2y + mbv)*H1(x, y) +
                  ref(2x + mrh, 2y + mrv)*H2(x, y)) / 8;

where

     [ 4 5 5 5 5 5 5 4 ]
     | 5 5 5 5 5 5 5 5 |
     | 5 5 6 6 6 6 5 5 |
H0 = | 5 5 6 6 6 6 5 5 |
     | 5 5 6 6 6 6 5 5 |
     | 5 5 6 6 6 6 5 5 |
     | 5 5 5 5 5 5 5 5 |
     [ 4 5 5 5 5 5 5 4 ]

     [ 2 2 2 2 2 2 2 2 ]
     | 1 1 2 2 2 2 1 1 |
     | 1 1 1 1 1 1 1 1 |
H1 = | 1 1 1 1 1 1 1 1 |
     | 1 1 1 1 1 1 1 1 |
     | 1 1 1 1 1 1 1 1 |
     | 1 1 2 2 2 2 1 1 |
     [ 2 2 2 2 2 2 2 2 ]

     [ 2 1 1 1 1 1 1 2 ]
     | 2 2 1 1 1 1 2 2 |
     | 2 2 1 1 1 1 2 2 |
H2 = | 2 2 1 1 1 1 2 2 |
     | 2 2 1 1 1 1 2 2 |
     | 2 2 1 1 1 1 2 2 |
     | 2 2 1 1 1 1 2 2 |
     [ 2 1 1 1 1 1 1 2 ]

Parameters

The function takes the following arguments:

curr_block: Pointer to the current block.
ref_frame: Pointer to the interpolated reference frame.
mch: Horizontal coordinate of the motion vector for the current block.
mcv: Vertical coordinate of the motion vector for the current block.
mah: Horizontal coordinate of the motion vector for the block above the current block.
mav: Vertical coordinate of the motion vector for the block above the current block.
mbh: Horizontal coordinate of the motion vector for the block below the current block.
mbv: Vertical coordinate of the motion vector for the block below the current block.
mlh: Horizontal coordinate of the motion vector for the block to the left of the current block.
mlv: Vertical coordinate of the motion vector for the block to the left of the current block.
mrh: Horizontal coordinate of the motion vector for the block to the right of the current block.
mrv: Vertical coordinate of the motion vector for the block to the right of the current block.
curr_stride: Stride, in bytes, between adjacent rows in the current frame.
ref_stride: Stride, in bytes, between adjacent rows in the interpolated reference frame.

Return Values

The function 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	Committed
MT-Level	MT-Safe

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	man pages section 3: Multimedia Library Functions Oracle Solaris 11.1 Information Library

mlib_VideoH263OverlappedMC_U8_U8

Synopsis

Description

Parameters

Return Values

Attributes

See Also