[Cin] Checked in tweaked patches from Andrew - EXR, PNG, and TIFF

[Phyllis Smith]

Andrew, the latest GIT checkin fixes the crash and provides a warning as
you suggested.  It works on the latest 2.4.1 version as there were some
code improvements over the 2.2.1.  Try it now.

> > > Also, minor bug:
> > >
> > > If I render OpenEXR sequence, load it, play it,
> > > and then delete main image files but NOT index *.exrs
> > >  - and try to load file from "recent files" sub-menu in main menu - Cin
> > > will terminate
> > >
> > > Easily reproduced here.  GG says OpenExr is doing a "throw" and
> Cinelerra
> > normally does not "catch". This would be the very first "catch" in
> > Cinelerra if it would be added and that is not the way gg wants to go
> > unless we absolutely have to. This requires the error handling
> > characteristics of the C++ runtime library.
> > If you do that same thing with a TIFF sequence, it passes the error
> > correctly back to Cinelerra to field instead of crash.
> >
>
> H, sorry for such suggestion without patch - but can't be OpenEXR sequence
> file  validated before passing it into library?
>
> Of course, on multiproces/user system  user may delete files right after
> they passes test of existence ....
>
> May be just document it? :}
>
> --
> Cin mailing list
> Cin at lists.cinelerra-gg.org
> https://lists.cinelerra-gg.org/mailman/listinfo/cin
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.cinelerra-gg.org/pipermail/cin/attachments/20200320/6e84a0d4/attachment-0001.html>