Gif support about juicy.pixels HOT 3 CLOSED

Hi,

Thanks for the information, I tried your decoder, but there is a HUGE problem of performance, I tried it with this huge Gif image and ran into a stack overflow and when launching with more stack space (./gif-parser +RTS -K30000000 -RTS huge.gif), it consumed 3.5 GB of memory while running, I had to kill it from then.

For a direct inclusion in the library, a partial rewrite to handle huge loads is needed, but don't worry, it's doable, and having a reference implementation is always good to have.

from juicy.pixels.

Yes this is mostly a problem with the lzw implementation since it uses a very inefficient Map. If you look into it, you will see why (it maps List on Int. so the key is a List which makes for very bad performance).

Also, my example main does load the same gif in memory 6 times (and i didn't test if it was garbage collected)

from juicy.pixels.

Reimplemented

from juicy.pixels.