Samsung S3C6400X User Manual page 669

FIMV-MFC V1.0
VC-1 Deblocking filter
VC-1 deblocking filtering process operates on the pixels that border neighboring blocks. The block boundaries
th
may occur at every 4 , 8
th th
16 , 24 , etc pixel row and column.
The horizontal boundary lines will be filtered first followed by the vertical lines. All blocks and subblocks that have
a horizontal boundary along the 8
horizontal boundary along the 4
have a vertical boundary along the 8
vertical boundary along the 4
The Figure 21.34 highlights the valid data output of VC-1 deblocking filter. Due to the overlap-smoothing filter, the
valid output region is shifted left-up.
valid
output
first MB
row
valid
output
middle
MB row
valid
output
last MB
row
th th
, 12 , etc pixel row or column in P pictures. Filtering the I pictures occurs at every 8
th th th
, 16 , 24 , etc horizontal lines will be filtered. Next, all subblocks that have a
th th th
12 , 20 , etc horizontal lines will be filtered. Next, all blocks and subblocks that
th th th
, 16 , 24 , etc vertical lines will be filtered. Next, all subblocks that have a
th th th
12 , 20 , etc vertical lines will be filtered
MB (0,0) MB (0,N-1)
MB (N-1,0) MB (N-1,M-1)
MB (N,0) MB (N,M-1)
MB (Q-1,0) MB (Q-1,M-1)
MB (Q,0) MB (Q,M-1)
Figure 21.34 valid output data of VC-1 deblocking filter
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
valid output
MB (0,N)
MB (N-1,M)
valid output
MB (N,M)
MB (Q-1,M)
valid output
MB (Q,M)
P : total number of macroblock X axis
Q : total number of macroblock Y axis
MULTI-FORMAT
VIDEO
valid output
MB (0,P-1) MB (0,P)
MB (N-1,P-1) MB (N-1,P)
valid output
MB (N,P-1) MB (N,P)
MB (Q-1,P-1) MB (Q-1,P)
valid output
MB (Q,P-1) MB (Q,P)
CODEC
th
,
21-43