[poppler] Speed improvements - chapter eleven

[Jeff Muizelaar]

On Wed, Sep 06, 2006 at 12:48:16AM -0700, Krzysztof Kowalczyk wrote:
> Frankly, I was disappointed that it's only ~~5%. I was expecting much
> more. It turns out that the culprit is current implementation of flate
> stream, which is frequently used to compress streams inside PDFs. It
> decompresses data in very small chunks (e.g. 8 bytes on average per
> getBuf() call in my test) so we don't save nearly as much as if we
> were getting, say, 256 bytes at a time. I'm working on improving that
> as well, but this change lays the necessary foundation.

It would also be interesting to see the effect that a version of the
zlib based FlateStream converted to this interface has on performace. My
guess (and hope) would be that the zlib code has been optmized more
heavily than the inflate code in poppler.

-Jeff