Hi, (Gmail seems to bounce the mailing list e-mails, so I'm doing a manual copy/paste reply from the archive) > I don't know what's going on with the "unable to decode", that's where repro > is vital. I sent the actual repro psb to security at openimageio.org. I couldn't manage to repro it with a constant colored psb of the same size.
> I'm not sure about the crashes, either, unless those are simply cases of > running out of memory. > High memory use: I'll need to know exactly what command line arguments you're > using so I can see what operations you're trying to do. In general, maketx > needs to hold the whole image in memory to do the down-size to get subsequent > MIP levels. I'm sure it could be changed to operate chunk by chunk for the > big image case. But also, there may be command line arguments you're using, > or not using, that could help. I was using: maketx -oiio input.psb -o out.tif oiiotool input.psb -otex out.tif iconvert input.psb out.tif In code I tried both InputImage/OutputImage looping over scanlines and reading/writing directly but result seemed garbled when I got it to process. I also tried ImageCache with autotile = 64 x 64, but result was constant colored gray when I actually got something to process. > I'm not aware of any specific problems with the PSB/PSD reader, but on the > other hand, I'm not sure how often it's used for images that big, or if there > is anything specific about your images that's making it hit some kind of edge > case. > By any chance, are you able to make a file you can send me that exhibits > these problems so I can easily reproduce it on my end and see what's going > on? It doesn't need to have "real content" -- if you can get a solid color, > checkerboard, or gradient to be problematic, that's even better as far as I'm > concerned. > -- lg Hope that helps! Happy to get you more info if there's something I missed. Best regards, Jens > >* On Mar 20, 2023, at 1:56 PM, Jens Olsson <jens.gustaf.johan.olsson at > >gmail.com > ><http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org>> wrote: *> > > >* Hi! *> >* I was trying to read some really big PSBs to do some calculations on, but not having much luck when the file gets too big. The example I have is 85K x 100K. *> >* 1. maketx and oiiotool crashes with segmentation fault *> >* 2. iconvert exits with the error *> >* "unable to decode packbits" *> > > >* I managed to read/write scanline by scanline with ImageInput/ImageOutput while hacking madly, but the end result looked incorrect, like data had been teared or offset somehow. *> > > >* The memory load is pretty damn high as well, is it trying to read all of the image data into memory? I would think that by reading scanlines it wouldn't need to hold that much in memory. *> > > >* Any hints on how to best read PSB are greatly appreciated, I'm resorting to convert from PSB to tif with ImageMagick now before reading that through OIIO, but would prefer to read them directly since it quickly eats up storage. Are there known limitations with the PSB reader? *> > > >* Best regards, *> >* Jens *> >* _______________________________________________ *> >* Oiio-dev mailing list *> >* Oiio-dev at lists.openimageio.org <http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org> *> >* http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org <http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org> * > -- > Larry Gritz> lg at larrygritz.com > <http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org>
_______________________________________________ Oiio-dev mailing list Oiio-dev@lists.openimageio.org http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
