Re: Allow a PNG to begin with a #! line
Glenn Randers-Pehrson <[email protected]>
| Newsgroups | gmane.comp.graphics.png.general |
|---|---|
| Message-ID | <CA+PdXctHa=QTPjM+dQHQ-mNqZqRMj-=X+vyFOh2pc=NkLSfVDg@mail.gmail.com> |
A PNG file does not have "lines"; it's binary. But you could do something like this, with the "#!something" followed by a base64-encoded PNG (like a "data URL"): $ cat blue.epng #!/usr/local/bin/display_epng data:image/png;base64, iVBORw0KGgoAAAANSUhEUgAAABAAAAAQAQMAAAAlPW0iAAAABGdBTUEAALGPC/xhBQAAACBjSFJN AAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAABlBMVEUAAP////973JksAAAA AWJLR0QB/wIt3gAAAAd0SU1FB+ALARMzAYjwr9kAAAAMSURBVAjXY2AgDQAAADAAAceqhY4AAAAl dEVYdGRhdGU6Y3JlYXRlADIwMTYtMTEtMDFUMTk6NTE6MDEtMDQ6MDBvJnzcAAAAJXRFWHRkYXRl Om1vZGlmeQAyMDE2LTExLTAxVDE5OjUxOjAxLTA0OjAwHnvEYAAAAABJRU5ErkJggg== That wouldn't require defining a PNG-2.0, the data can contain a regular PNG as demonstrated above. So, an EPNG is simply a #-delimited header followed by a data URL containing image data. Glenn On Tue, Nov 1, 2016 at 4:43 PM, Soni L. <[email protected]> wrote: > EPNG was a bust, so, can PNG be changed so that a #! line at the start > of a PNG is ignored/skipped? > > This breaks backwards compatibility, so might need to be delayed until a > "PNG 2.0". > > ------------------------------------------------------------ > ------------------ > Developer Access Program for Intel Xeon Phi Processors > Access to Intel Xeon Phi processor-based developer platforms. > With one year of Intel Parallel Studio XE. > Training and support from Colfax. > Order your platform today. http://sdm.link/xeonphi > _______________________________________________ > png-mng-misc mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/png-mng-misc > ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ png-mng-misc mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/png-mng-misc