There is a getimg verb for that purpose. I have just update the addon to add a line in the test. Please update and check. Thanks.
On Thu, Dec 8, 2022 at 10:18 PM Ed Gottsman <edward.j.gotts...@gmail.com> wrote: > Raul, > > Thanks for getting back to me so rapidly and for digging into the code. > I’d been relying on test.ijs for my understanding of the library’s intended > use—but you’re right: nothing stops me from learning a few things and > exploiting what’s under the covers. I happen to be on Windows and all I > need is to convert encoded in-memory jpg to raw pixels…which, as you imply, > the library is doing, presumably (in my case) with GDI. How hard could it > be? :-) > > Thanks again. > > Ed > > Sent from my iPad > > > On Dec 8, 2022, at 8:08 AM, Raul Miller <rauldmil...@gmail.com> wrote: > > > > I am not familiar with pplatimag, but browsing the code (in jqt: > > open 'graphics/pplatimg') shows that it's mostly platform specific > > calls to external shared libraries. > > > > So I guess the answers to two questions would be particularly relevant > here: > > > > (1) which OS are you using? > > > > (2) Which parts of pplatimg do you use? > > > > That said, looking at the code, I do see stuff like > > gdk_pixbuf_new_from_data and gdk_pixbuf_save_to_buffer so the answer > > to your question is probably yes. > > > > I hope this helps, > > > > > > -- > > Raul > > > >> On Thu, Dec 8, 2022 at 8:40 AM Ed Gottsman <edward.j.gotts...@gmail.com> > wrote: > >> > >> Hello. I have a database of jpgs (~250,000 and likely to grow above > 1e6) that I’d like to use with gl2’s glpixels routine. It’s an interactive > app so responsiveness is important. It looks as if the most recent add-on > for working with jpgs is pplatimg, which seems to assume (judging by the > tests) that the images are kept in a file system… > >> > >> …which is unfortunate in this case, because my images happen to be > comfortably ensconced in a SQLITE BLOB column. They certainly don’t have > to be. I could export them to the file system, thereby splitting my > database across two data managers (not terribly appealing). I could also, > on the fly, retrieve BLOBs, write them to temp jpg files, read them using > pplatimg, and render them with glpixels (also not appealing on both > performance(?) and aesthetic grounds). I’m happy to do either (well…the > latter) if there’s no third choice available, but I thought I’d check first: > >> > >> Does pplatimg (or some other library) have externally-exposed in-memory > jpg decoding such that I could retrieve a jpg BLOB to memory, decode it to > raw pixels, and call glpixels with it? > >> > >> Or (and the older I get, the more convinced I become that this should > be my sig) am I looking at this all wrong? > >> > >> Thanks very much. > >> > >> Ed > >> > >> Sent from my iPad > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
