Thinking about large files.

[Bart Coppens]

On Monday 13 June 2005 22:20, Boudewijn Rempt wrote:
> Oh, that's for certain: we first construct an ImageMagick Image and that
> loads the entire thing into memory. I guess that around this time next year
> we'll have our own filters for frequently occuring fileformats like tiff
> and xcf. I tried to get hold of the photoshop file format specification,
> but that's behind a rather onerous license now.
You could start with a PNG filter, that's an open format, and is rather 
'easy' (no layers and so), and has an own library.


> Fun for a CS student!
Hehe :-)

> Not at all: just (count of the tiles in a memento) * pixelsize * tilewidth
> * tileheight / 1024 * 1024. Not entirely accurate, but accurate enough. Of
> course, we also need an undo panel with a nice undo slider and a clear undo
> history button for in our dockers.
Of course, but that won't work all the time (resizing an image, for example, 
will save all layers).