qccimgimagecomponentextractblock.3

spiht for linux this is used to decod and encode vedio i wich all enjoy

.TH QCCIMGIMAGECOMPONENTEXTRACTBLOCK 3 "QCCPACK" ""
.SH NAME
QccIMGImageComponentExtractBlock,
QccIMGImageComponentInsertBlock
\- 
block extraction and insertion from/to image component
.SH SYNOPSIS
.B #include "libQccPack.h"
.sp
.BI "int QccIMGImageComponentExtractBlock(const QccIMGImageComponent *" image_component ", int " image_row ", int " image_col ", QccMatrix " block ", int " block_num_rows ", int " block_num_cols );
.br
.BI "int QccIMGImageComponentInsertBlock(QccIMGImageComponent *" image_component ", int " image_row ", int " image_col ", const QccMatrix " block ", int " block_num_rows ", int " block_num_cols );
.SH DESCRIPTION
.BR QccIMGImageComponentExtractBlock()
extracts a
.I block
of size
.IR block_num_rows
by
.IR block_num_cols
from
.IR image_component .
The
.I block
is extracted such that the upper-left corner of the extracted
.I block
lies at location
.RI ( image_col ", " image_row )
in
.IR image_component .
If any part of the extracted
.I block
lies beyond the bounds of
.IR image_component ,
the corresponding pixels in
.IR block
beyond the image-component bounds are set to 0.
.LP
.BR QccIMGImageComponentInsertBlock()
inserts a
.IR block
of size
.IR block_num_rows
by
.IR block_num_cols
into
.IR image_component
at location
.RI ( image_col ", " image_row ).
Any part of the inserted
.IR block
that would lie beyond the bounds of
.IR image_component
is ignored, i.e., not inserted into
.IR image_component .
.SH "RETURN VALUES"
These routines return 0 on success and 1 on error.
.SH "SEE ALSO"
.BR QccIMGImageComponent (3),
.BR QccPackIMG (3),
.BR QccPack (3)

.SH AUTHOR
Copyright (C) 1997-2009  James E. Fowler
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