MTF better than AdaptHuff?

[Harry Potter]

Hi! I am working on several compression techniques right now. I was at one time working on a form of MTF but abandoned it thinking it did worse than AdaptHuff. However, a few weeks ago, I resurrected it and found it was *better* than AdaptHuff. Following is the code I'm using to write MTF values:
----------------------
void mtfWriteVal (unsigned c)
{
unsigned m=mtfGetVal (c);
if (m<32) {
writeoutf_11 ();
writeoutf (m, 5);
} else if (m<64) {
writeoutf_x2 (2);
writeoutf (m-32, 5);
} else if (m<128) {
writeoutf (5, 3);
writeoutf (m-64, 6);
} else {
writeoutf (6, 3);
writeoutf (m-128, 7);
}
}
------------
where mtfGetVal() gives the value translated to MTF, writeoutf_01() and writeoutf_11() write one bit, writeoutf_x2() writes two bits and writeoutf() writes the number of bits given in the second argument.

[Phil Carmody]

Harry Potter <rose.j...@yahoo.com> writes:
> Hi! I am working on several compression techniques right now. I was at one time working on a form of MTF but abandoned it thinking it did worse than AdaptHuff. However, a few weeks ago, I resurrected it and found it was *better* than AdaptHuff. Following is the code I'm using to write MTF values:

This is an apples to oranges comparison. MTF could be included before
AdaptHuff, they aren't competing with each other.

Phil
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