Code covered by the BSD License

### Highlights fromJPEG Codec

from JPEG Codec by Ravi Lakkundi
JPEG Codec

b=jdcenc(x)
```function b=jdcenc(x)
% Usage: b=jdcenc(x)
% Hoffman encoding of DC coefficients in JPEG
% copyright(c) 1997 by Yu Hen Hu
%
% category c = floor(log2(abs(x)))+1
% append code is the binary representation of abs(x) if x>0
% of the 1's complement of bianry rep of abs(x) if x < 0
% created: 11/25/97

% first figure out category number
if x ==0,
%b=[0 1 0];
b=[0 0];
return % done
else
c = floor(log2(abs(x)))+1;
end

% Hoffman table
tbl=[3 0 1 0 0 0 0 0 0 0
3 0 1 1 0 0 0 0 0 0
3 1 0 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0 0
3 1 0 1 0 0 0 0 0 0
5 1 1 0 0 0 0 0 0 0
4 1 1 1 0 0 0 0 0 0
5 1 1 1 1 0 0 0 0 0
6 1 1 1 1 1 0 0 0 0
7 1 1 1 1 1 1 0 0 0
8 1 1 1 1 1 1 1 0 0
9 1 1 1 1 1 1 1 1 0];

% This table is in the pdf file, print out taken
% Modified 27 sept 2003, 2325 Hrs

tab=[2 0 0 0 0 0 0 0 0 0
3 0 1 0 0 0 0 0 0 0
3 0 1 1 0 0 0 0 0 0
3 1 0 0 0 0 0 0 0 0
3 1 0 1 0 0 0 0 0 0
3 1 1 0 0 0 0 0 0 0
4 1 1 1 0 0 0 0 0 0
5 1 1 1 1 0 0 0 0 0
6 1 1 1 1 1 0 0 0 0
7 1 1 1 1 1 1 0 0 0
8 1 1 1 1 1 1 1 0 0
9 1 1 1 1 1 1 1 1 0];

tbl=tab;
% This is changed by Ravi Lakkundi

b=tbl(c+1,2:tbl(c+1,1)+1);

tmp=int2bin(x,c);
% tmp is 1 by c+1 vector containing sign-mag
% representation of x, first bit is sign bit.

if tmp(1)==0, % if x > 0
b=[b tmp(2:c+1)];
elseif tmp(1)==1, % if x < 0
b=[b ones(1,c)-tmp(2:c+1)];
end
```