| | <<<Back 1 day (to 2017/06/11) | 20170612 |
| gree303 | hi @all | 14:12.03 |
| alexcher | gree303: Hi, what's your question? | 14:19.50 |
| gree303 | Hi alexcher, thanks for asking. I'm tryin to place a second layer into any vector based file format (requirements: cmyk + additional spot color). Any idea if ghostscript is capable doing so? | 14:26.38 |
| kens | Depends entirely on what you mean I'm afraid, that isn't enough information to go on. | 14:27.37 |
| | <sigh> freenode kicked me off again :-( | 14:29.55 |
| gree303 | I tried it with eps and inkscape; also tried imagemagick with multilayer pdf/eps, but both options won't accomplish the task. that's why I'm here to ask if ghostscript can handle multiple layers. | 14:30.19 |
| kens | Sorry I'm not trying to be awkward but its unclear to me what you are asking for. | 14:30.54 |
| | 'layers' could mean many things, depending on the file format. | 14:31.10 |
| | You can only send PDF or PostScript to Ghostscript directly. | 14:31.23 |
| | For vector outpur formats you can get PostScript, PDF, XPS or PXL with varying degrees of success, depending on the input. | 14:32.05 |
| | You can defer page emission until specific criteria are met, this means that you can 'combine' or 'overlay' content on top of existig content. | 14:32.51 |
| | THis could be considered a 'layer' | 14:33.01 |
| | Then there are 'layers' in Photoshop. Our Photoshop output doesn't allow for creation of those. | 14:33.22 |
| | Then there is 'optional content' in PDF which is often (,isleadingly) called 'layers', most notably by Acrobat. | 14:33.47 |
| | So perhaps rather than asking for 'layers' it might be easiest if you describe what you are trying to achieve | 14:35.13 |
| kens | will be back in a moment, feel free to comment and I'll read it when I'm back | 14:36.17 |
| gree303 | hi kens, thanks for the note. with 'layer' I refer to photoshop/illustrator based layers. but not like the svg-layers, which are sub-based-layers. in detail the additional layer will be used as 'CutContour' Layer, as extra seperated layer above the 'background' layer. Furthermore the CutContour has to be in a certain color (spot color/cmyk). My 'background' design is based on a single-layered SVG image. For further steps within printing proces | 14:41.32 |
| | to be added as an additional layer above the 'background'-layer. Exported vector format has to support cmyk/spot colors and multiple layers ( like in "photoshop/illustrator"). Many thanks ahead. | 14:41.32 |
| | @kens, me too - I will be back within 1hr - thx | 14:42.16 |
| kens | Well, we don't output Photoshop layers, and we don't write Adobe Illustrarot .ai files. So we can't do anything for you which relies on those. | 14:42.55 |
| gree303 | just as an example, doesn't has to be ai/psd file at all. I thought of eps. | 14:43.29 |
| kens | You can readily enough add cut/register marks, and they can easily be in a /Separation (spot) colour. Provided you output to PDF or PostScript (EPS is a subset of PostScript of course). | 14:44.08 |
| | But that wopn't be a 'layer', at least not in PostScript, since PostScript has no concept of layers. | 14:44.58 |
| gree303 | are you talking about vector based pdf's? this might be the answer. imagemagick isn't capable of processing vector pdf's. | 14:45.20 |
| kens | You *could* I think create the cut/register as Optional Content in a PDF file using pdfmark operations. I'm not certain we support all the pdfmark operations you would need, I'd have to check | 14:45.58 |
| gree303 | sound promising, could you pm or mail me if you find time? thx | 14:46.33 |
| kens | ImageMagick is an 'image' (ie bitmap) tool, so not it can't deal with PDF files, it uses Ghostscript to render them to an image | 14:46.34 |
| | I'd suggest you look at the Adobe pdfmark reference | 14:46.56 |
| gree303 | ic, ok, so maybe using sub-layers from SVG files. I'll rethink the entire process and also have a closer look into gs. and also look into adobe pdfmark | 14:47.10 |
| kens | http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/pdfmark_reference.pdf | 14:47.17 |
| | You would process the original file (so it would have to be PostSciript or PDF) then use an EndPage procedure to add the Optional Content using pdfamrk operatiosn, I woudl expect | 14:48.04 |
| | THis isn't going to be trivially easy by the way | 14:48.13 |
| | Its going to mean some PostScript programming to get it to work | 14:48.27 |
| gree303 | i'll need some time to get into this. thx for now - sound very promising. | 14:49.08 |
| | (s) | 14:49.10 |
| kens | NP | 14:49.15 |
| miqlas | Hi Guys | 15:58.04 |
| | I try to get ghostscript compiled on Haiku, but i always hit the walls with top speed :S | 15:58.50 |
| | If nobody minds, i would like to explain the situation, maybe somebody already had this fight and can have some constructive ideas. | 15:59.57 |
| kens | chrisl is our buil expert, but go ahead | 16:00.15 |
| miqlas | so i took the latest gs sources and extracted it. | 16:00.16 |
| | i use haiku x86_64, latest version with all the required stuff, auto*, make, gcc 5.4 and the supporting shared libs like jpeg, tiff, libz, and so on. | 16:01.20 |
| kens | I'd start by not using the shared libraries myself, just use the ones shipped with GS. | 16:01.45 |
| miqlas | did a configure with --prefix=/aniceplaceforgs | 16:01.46 |
| kens | But I guess it maybe is easier ot have the already supplied shared libraqries rather than porting those too | 16:02.02 |
| miqlas | kens, i tried, but plenty provided in-tree sources are just a vanilla sources, and they don't have the reuired haiku supporting patches, so it breaks really early. that's why i would like to build it with syslibs | 16:02.44 |
| kens | Yeah well the GS supplied sources aren't ported to Haiku for sure | 16:03.01 |
| miqlas | So i just renamed every intree sources, what i got as shared libs on haiku. | 16:03.05 |
| kens | Though dome of them do include GS-specific patches | 16:03.17 |
| miqlas | ouch, it could be a problem for sure | 16:03.35 |
| chrisl | lcms is probably the biggest headache on that front, just now. | 16:04.03 |
| kens | No GS will operate with (reasonably up to date) versions of the standard libraries, but with some limitations | 16:04.10 |
| miqlas | So i just renamed freetype, jbig2dec, lcms2, libpng, openjpeg, tiff, and zlib flders, so the configure script won't find them and will use the system provided ones. | 16:04.53 |
| | it went really far | 16:05.03 |
| | but then it complains that "compress" undefined reference. | 16:05.49 |
| chrisl | That's zlib | 16:06.03 |
| miqlas | compress is exported by libz, and as i renamed the zlib folder it should use the system provided one. | 16:06.28 |
| | so i have no idea what went wrong. | 16:08.04 |
| | tried to configure it with LDFLAGS="-lz" but no dice | 16:08.19 |
| chrisl | Was the -lz missing in the first place? | 16:08.43 |
| miqlas | the gs build tool is really complex for my eyes, so i have no real idea, what it does. LDFLAGS="-lz" not helps, for sure | 16:09.40 |
| | But i see it in my top-level makefile: | 16:10.23 |
| | "LDFLAGS=-lnetwork -lz $(AC_LDFLAGS) $(XLDFLAGS)" | 16:10.25 |
| | (-lnetwork is like -lsocket in Haiku) | 16:10.40 |
| chrisl | Clearly, use a different name just to confuse every one...... | 16:11.13 |
| miqlas | ofc :) unorthodox, you know :) | 16:11.59 |
| | and to break every *nix stuff, what doesn't know about our fetish. | 16:12.32 |
| | so libz exports this (objdump -x output): | 16:13.27 |
| | 0000000000002cee g F .text 0000000000000038 compress | 16:13.29 |
| chrisl | In your top makefile, search for "AUXEXTRALIBS" and add -lz to that | 16:13.30 |
| miqlas | i suppose this is the stuff what required | 16:13.40 |
| | chrisl: okey! | 16:13.57 |
| | building... | 16:14.58 |
| | will take some minutes as i just reconfigured the whole stuff :( | 16:15.31 |
| | i think i should buy an i7 laptop to make my ports... | 16:20.58 |
| | Ok, it died here: https://0x0.st/IEa.txt | 16:23.26 |
| | -lopenjp2 i think | 16:23.34 |
| | oh, snap, it is already in AUXEXTRALIBS | 16:24.02 |
| chrisl | Yeh, you might want to reinstate our opj sources, and see if it works | 16:24.25 |
| miqlas | here is my top-level makefile: https://0x0.st/IEM.txt | 16:24.33 |
| | opj? you mean the in-tree stuff? | 16:24.52 |
| chrisl | Yeh | 16:24.59 |
| miqlas | eeeh :) | 16:26.17 |
| | reconfiguring... | 16:26.52 |
| chrisl | That looks like all the openjpeg symbols we call, so it's it's finding the lib at all | 16:27.19 |
| miqlas | but i have no idea if my battery can do so much, i already built the whole stuff 3-4 times today... | 16:27.49 |
| | reconfigured, added the -lz to EXTRALIBS, make running | 16:30.12 |
| chrisl | AUXEXTRALIBS != EXTRALIBS | 16:30.47 |
| miqlas | are you sure? i see here "AUXEXTRALIBS=$(EXTRALIBS)" | 16:31.58 |
| chrisl | They *can* be the same, they are not necessarily the same | 16:32.32 |
| miqlas | in this special case it seems they are the same for me, but ofc i can be wrong too | 16:33.29 |
| chrisl | They are generally only different for cross compilation. Adding -lz to AUXEXTRALIBS in this case is a workaround | 16:34.20 |
| miqlas | i got an objdump output, for me it seems it got all the required symbols, for what the compiler complained i nthe earlier run: https://0x0.st/IEe.txt | 16:35.39 |
| | i think i wil lreanme or compiler to complainer | 16:35.59 |
| | * i think i will reanme our compiler to complainer | 16:37.24 |
| | omg, it finished without error | 16:37.52 |
| chrisl | So, for some reason, the openjpeg lib didn't work | 16:38.18 |
| miqlas | chrisl: it was crazy, because if i used the in-tree zlib, then it complained about openjp2, if i used only the in-tree openjp2, then it complained about zlib, if i used booth in-tree, then it complained about openjp2, so i had no idea, what should i do. | 16:40.36 |
| | but thanks, it looks better now :) | 16:40.43 |
| chrisl | Well, to explain..... | 16:41.05 |
| miqlas | i should use make soinstall now, right? | 16:41.27 |
| chrisl | Er, did you "make so"? | 16:41.43 |
| miqlas | nope. | 16:42.09 |
| | i did just make | 16:42.13 |
| chrisl | Well, there isn't a so to install | 16:42.20 |
| | You've built an exe | 16:42.31 |
| miqlas | it seems it trying to rebuild everything... again... | 16:43.18 |
| chrisl | It will, yes | 16:43.37 |
| miqlas | ouch | 16:43.41 |
| | ok, i got a cold beer, no problem | 16:44.09 |
| | but if it isn't ok to do make soinstall, then please let me know, because i don't think my battery can survive yet another run | 16:44.58 |
| chrisl | Well, TBH, since I know almost nothing about Haiku, it's rather hard for me to guess whether it'll work or not..... | 16:45.52 |
| miqlas | then let's see! adventure time! | 16:46.41 |
| chrisl | So, we have to build some utils for use during the build: echogs, mkromfs, genarch and genconf. These are *only* used during the build. | 16:47.35 |
| | Your original zlib failure was because the mkromfs build didn't get the -lz parameter (although the final Ghostscript link would have) | 16:48.26 |
| miqlas | oh, did i found a bug in gs? | 16:48.47 |
| chrisl | Yep | 16:48.53 |
| miqlas | see? unorthodox :) | 16:49.04 |
| | should i create a bugreport? | 16:49.19 |
| chrisl | No, I have a solution here - I did a major rework last year to better support cross compiling, and I just left a small thing out | 16:49.57 |
| | But thanks | 16:50.23 |
| miqlas | cool, can we have this fix in the next version? | 16:50.29 |
| chrisl | It will be in the next release | 16:50.42 |
| miqlas | oh, snap: https://0x0.st/IEV.txt | 16:51.05 |
| | make soinstall wasn't a great idea. | 16:51.15 |
| chrisl | I don't really understand why there should be an undefined reference to "main" when creating a library | 16:52.24 |
| miqlas | but it seems "make install" does the magic, i already got a 20mb gs executable | 16:53.11 |
| chrisl | Yes, you have an executable, but I assumed you wanted a library because you asked about make soinstall | 16:53.46 |
| miqlas | nope, i want the executable :) | 16:54.37 |
| chrisl | Oh, well, you should have said ;-) | 16:54.50 |
| miqlas | Ladies and gentlemans: https://0x0.st/IE4.txt | 16:55.46 |
| chrisl | Cool | 16:56.08 |
| miqlas | is there any way to test it? | 16:56.54 |
| | generate a pdf or something like that? | 16:57.05 |
| chrisl | gs -sDEVICE=pdfwrite -o stuff.pdf -c showpage | 16:57.26 |
| miqlas | btw, the gs fonts are missing, but i already made a recipe for them | 16:57.30 |
| chrisl | The gs fonts are *not* missing, according to your build output | 16:58.11 |
| miqlas | well, i got an empty pdf | 16:58.15 |
| chrisl | That's what I'd expect | 16:58.29 |
| miqlas | chrisl: you mean this? " /usr/lib/DPS/outline/base : /usr/openwin/lib/X11/fonts/Type1 : /usr/openwin/lib/X11/fonts/TrueType" | 16:58.52 |
| chrisl | No, I mean: https://0x0.st/IEV.txt | 16:59.08 |
| miqlas | it is an error, so what should i see there? | 16:59.34 |
| chrisl | The top few lines there are the last few gs font files being built into the romfs | 16:59.52 |
| miqlas | oh, ok, sorry for the misunderstanding. | 17:00.34 |
| chrisl | NP, some of this stuff is *far* from obvious! | 17:00.49 |
| miqlas | i never thought it will compile some fonts into the binary, but yeah, makes sense | 17:00.55 |
| | now i got a gs executable, it works (theoretically), so i can go and take over the world, right? | 17:01.22 |
| | nope, i have to make a proper recipe for gs first | 17:01.44 |
| chrisl | Here's patch for the zlib issue: http://git.ghostscript.com/?p=user/chrisl/ghostpdl.git;a=commitdiff;h=284f5fe121d | 17:02.48 |
| | FWIW, I tried a build linking against the system open 2.1.2 here, and it ran to completion | 17:04.53 |
| miqlas | chrisl: thanks! | 17:05.13 |
| chrisl | But I'm still confused about why building a shared library should complain about a missing main symbol | 17:05.39 |
| miqlas | chrisl: i just tested ghostscript with this sample file: https://www.pa.msu.edu/people/perkins/testps/samplec.ps | 17:05.39 |
| | got this: https://0x0.st/IEw.pdf | 17:05.50 |
| chrisl | There are also files you can test with in the "examples" directory in the source tree | 17:06.27 |
| | But the truth is, just spitting out that "empty" PDF you did first exercised a *hell* of a lot of the code in there, so....... | 17:07.49 |
| | The only bit you haven't really touched at all is the rendering | 17:08.18 |
| miqlas | i tested some examples, all of them looks ok for me, so i think it working correctly | 17:09.20 |
| chrisl | Did you do other outputs than PDF? | 17:09.51 |
| miqlas | i did the tiger, the doretree and the alphabet examples, looks ok | 17:09.54 |
| | what else could i have? | 17:10.04 |
| | maybe there is plenty other options, but i know almost nothing about gs yet | 17:10.30 |
| chrisl | jpeg, pnm, tiff, lots and lots | 17:10.46 |
| miqlas | also with ps2pdf? | 17:11.18 |
| chrisl | No, ps2pdf outputs pdf, it's just a shell script that calls Ghostscript | 17:11.43 |
| miqlas | i don't think so | 17:11.44 |
| | so should i call gs directly to generate jpeg? | 17:12.29 |
| | doretree looks nice: https://0x0.st/IEY.pdf | 17:13.06 |
| chrisl | Yes, you'd do "gs -sDEVICE=jpeg -o out%03d.jpeg <input file>" | 17:13.15 |
| | So, when you posted the output from gs -h, that included a long list of "devices" which are all the output options you have in your gs executable | 17:14.49 |
| miqlas | works! | 17:14.51 |
| | thanks for your help, i will do a recipe and send the haiku patches to gs | 17:15.14 |
| | but i have to go now | 17:15.18 |
| | bye and thanks again | 17:15.23 |
| chrisl | NP | 17:16.01 |
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