| | <<<Back 1 day (to 2017/02/21) | 20170222 |
| Diemex_ | Robin_Watts: Okay. So there are 2 repositories mupdf and mupdf-android-viewer-old. Which should I use to build for android? Last time I used the viewer. Copied the compiled .so binaries and java classes to my project. | 11:09.12 |
| Robin_Watts | mupdf has the basic JNI classes in. | 11:09.40 |
| | mupdf-android-viewer-old has the hacked-together-just-enough-for-the-apps-needs JNI classes in. | 11:10.09 |
| Diemex_ | The libmupdf folder seems to be a copy of mupdf | 11:10.24 |
| | But I dont think its used yet? Right? | 11:10.45 |
| Robin_Watts | Sorry, where are you looking? | 11:11.00 |
| tor8 | Diemex_: the android viewers now live in their own repositories, and include the mupdf project in a folder called 'libmupdf' | 11:11.48 |
| | if you want to build for android, clone one of the android-viewer repositories (and don't forget --recursive to git clone) | 11:12.31 |
| Diemex_ | Yes that is what I meant. Its a one to one copy. Even code for windows and other platforms is still included haha | 11:12.33 |
| Robin_Watts | Diemex_: A git 'submodule' is a reference to another git repo. | 11:13.08 |
| Diemex_ | The instructions to build the android viewer are still for the old app not the jni bindings? | 11:13.27 |
| Robin_Watts | so we keep the core mupdf stuff in the mupdf repo, and the projects (like viewers etc) refer to that (and hence on a clone, get a copy). | 11:13.55 |
| | Diemex_: Depends which instructions you look at :) | 11:14.11 |
| Diemex_ | https://mupdf.com/docs/how-to-build-mupdf-for-android | 11:15.11 |
| | I would just like to know how to get the .so files to include in my project. I don't think I will bother trying the "new" Android Studio support for c/c++ Code as I will most likely not modifying mupdf anytime soon. | 11:16.31 |
| Robin_Watts | Diemex_: Those instructions are indeed for 'mupdf-android-viewer-old.git' | 11:17.15 |
| tor8 | Diemex_: there is a new project 'mupdf-android-viewer-mini.git' which is a LOT simpler code, and uses the new JNI | 11:23.51 |
| | I'm also working on a branch of mupdf-android-viewer-old which strips out all the editing functionality and rewrites the MuPDFCore to use the new JNI library | 11:24.34 |
| | but that is still quite complicated GUI code | 11:24.57 |
| | http://git.ghostscript.com/?p=mupdf-android-viewer-mini.git;a=blob;f=README | 11:26.26 |
| Diemex_ | Is there support for greyscale rendering in the jni bindings? There are lots of pdfs that are just text. One could save a lot of memory if those aren't rendered in argb_8888 | 11:40.37 |
| tor8 | Diemex_: yes. but if you're rendering to android.graphics.Bitmap that is only ARGB8888. | 11:41.46 |
| | should not be *too* difficult to change | 11:41.58 |
| | there's some fancy tricks going on to render directly into an android.graphics.Bitmap's backing store memory | 11:42.36 |
| Diemex_ | Because android has an ALPHA_8 format that one could use for greyscale | 11:42.40 |
| tor8 | Diemex_: the #ifdef HAVE_ANDROID section with newNativeAndroidDrawDevice in platform/java/mupdf_native.c and platform/java/src/com/artifex/mupdf/fitz/android/AndroidDrawDevice.java | 11:44.16 |
| Diemex_ | So I would change from fz-device-rgb to fz-device-greyscale (or whatever its called) | 11:49.04 |
| | Those are some memory optimisations that I will do down the road sometime. I was also thinking about not rendering the padding around pages. The white space is quite wasteful (No information) | 11:50.42 |
| | Will grezscale rendering be faster than rgb? | 11:51.27 |
| | The amount of memory needed is just crazy on a 1440p tablet. 2048px tiles encoded in argb8888 are 16mb each. My app uses around 150mb Ram, mostly just bitmaps | 11:55.46 |
| | If I reduce the tile size the rendering slows down too much | 11:56.10 |
| tor8 | grayscale rendering will be faster, because it only hits 1/4 of the RAM | 12:11.52 |
| Diemex_ | tor8: Your git submodule reference is broken: Fetched in submodule path 'libmupdf', but it did not contain 79c47af457f7b3ac8c67ffc17e7f824ad0266304. Direct fetching of that commit failed. | 12:23.22 |
| tor8 | Diemex_: sorry, try again now. | 12:23.51 |
| | I'd forgotten to push yesterdays' batch of approved commits to our master repo | 12:24.11 |
| Diemex_ | tor8: Works now | 12:39.06 |
| | tor8: I get this error when running make | 12:46.53 |
| | In file included from C:/CODE/NDK/mupdf_new/mupdf-android-viewer-mini/libmupdf/platform/java/mupdf_native.c:13: C:/CODE/NDK/mupdf_new/mupdf-android-viewer-mini/libmupdf/include\mupdf/pdf.h:10:10: fatal error: 'mupdf/pdf/name-table.h' file not found | 12:46.54 |
| tor8 | Diemex_: oh, you're using windows? | 12:48.34 |
| Diemex_ | Yeah ofc | 12:48.49 |
| tor8 | you'll need to find some way to run the 'make generate' step in libmupdf. | 12:48.57 |
| | on linux that's done automatically if you use the makefile | 12:49.06 |
| | easiest would be to open up libmupdf/platform/win32/libmupdf.vcproj in visual studio | 12:49.30 |
| | or cd libmupdf/platform/win32 and run generate.bat | 12:49.51 |
| Diemex_ | I dont have VS installed atm... | 12:50.52 |
| tor8 | sorry, that should be "cd libmupdf" and run "platform\win32\generate.bat" | 12:51.16 |
| | have you got MSYS/MinGW installed? | 12:51.28 |
| | have you got access to a linux machine? | 12:51.35 |
| | are you using Windows 10 with the Linux for Windows Subsystem? | 12:51.53 |
| Diemex_ | I have GnuWin32 | 12:52.15 |
| tor8 | if neither of those are true, you're out of luck. | 12:52.18 |
| | run "make generate" in libmupdf | 12:52.37 |
| | if you have a unix-ish enough environment to run make and gcc that should be enough | 12:52.52 |
| Diemex | tor8: Running make generate in libmupdf didnt resolve the error | 13:19.34 |
| tor8 | did the command succeed? | 13:20.04 |
| Diemex | tor8: The last lines are | 13:23.55 |
| | ' ' ' ' GEN generated/gen_adobe_ca.h ; build/release/bin2hex generated/gen_adobe_ca.h resources/certs/AdobeCA.p7c ' ' ' ' GEN include/mupdf/pdf/name-table.h ; build/release/namedump resources/pdf/names.txt include/mupdf/pdf/name-table.h source/pdf/pdf-name-table.h | 13:23.57 |
| | Is there supposed to be a success message? | 13:24.14 |
| | Here is the output from running make generate in /libmupdf | 13:30.57 |
| | https://justpaste.it/13sj6 | 13:30.57 |
| icyjug | hi i have a simple problem i want to do but cant find any solution | 13:31.15 |
| | i usually use pdftk to merge all my pdfs in a directory like this: pdftk *.pdf cat output output.pdf | 13:32.02 |
| | it works very well but it wont preserve any bookmarks | 13:32.37 |
| kens | That's because you cannot preserve the bookmarks when you do that. You woul dhave to regenerate them. | 13:33.03 |
| tor8 | Diemex: that does not look like a successful build | 13:33.05 |
| icyjug | i also want to add the filenames of the files as bookmarks in the output | 13:33.17 |
| kens | Then you need to make all new bookmarks | 13:33.31 |
| icyjug | is this possible with gs? | 13:33.33 |
| kens | Possible, yes, certainly, you can weite extensive pdfmarks to do it. Easy? No not at all | 13:33.52 |
| tor8 | Diemex: http://pastebin.com/raw/iVFFpsRL that's what it should look like | 13:33.57 |
| icyjug | actually i dont even need to preserve the original bookmarks, i meant that pdftk offers no support for bookmarks in general | 13:35.37 |
| kens | If you want to simply add bookmarks then I believe ther eis a pdfmark operator for that. | 13:36.01 |
| tor8 | Diemex: that "File not found - *.[ch]" message looks like something's not right | 13:36.04 |
| icyjug | i simply want to merge the pdfs and add their filenames as bookmarks in the output | 13:36.12 |
| tor8 | which 'make' are you using? we need gnu make | 13:36.17 |
| kens | icyjug : well Ghostscript doesn't merge PDF files, it makes a new one based on the input, which is not quite the same thing. | 13:36.37 |
| icyjug | kens i guess thats what pdftk does too | 13:37.17 |
| kens | The pdfmark reference on page 26 has an example of creating an Outline (bookmark to you) | 13:37.17 |
| | icyjug : I suspect pdftk does not fully interpret the content streams teh way Ghostscript does. | 13:37.40 |
| | Likely it treats the objects as black boxes and simply reassemebles them with different numbering | 13:38.02 |
| | Ghostscript tears them apart to the lowest possible point | 13:38.13 |
| icyjug | kens pdfmark is the manual of gs? | 13:38.30 |
| kens | No. | 13:38.39 |
| | pdfmark is the Adobe defined PostScript operator for creating content in the output of a PostScript-to-PDF 'Distiller' | 13:39.05 |
| | You can find the pdfmark refrence somewhere on the adobe website | 13:39.23 |
| icyjug | ok ill check | 13:39.38 |
| kens | http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/pdfmark_reference.pdf | 13:39.50 |
| | page 26, Bookmarks (OUT) | 13:40.18 |
| | To the best of my knowledge the pdfwrite device will honour that pdfmark. You will have to check for yourself what it does with multiple inputs already containing pdfmarks. | 13:41.34 |
| Diemex | tor8: I was using make from here: http://gnuwin32.sourceforge.net/packages/make.htm | 13:42.16 |
| kens | Oh, and if I recall correctly, you will have to send the pdfmark after you process all the input. | 13:42.28 |
| Diemex | It says it is gnu. I'm busy installing the linux subsystem and will retry with that | 13:42.43 |
| icyjug | kens how could i adjust this solution http://stackoverflow.com/questions/7102090/combining-pdf-files-with-ghostscript-how-to-include-original-file-names for my case? | 13:53.48 |
| | i understand that bookmarks are kept in this postscript file | 13:54.08 |
| kens | There are 3 answers there, which 'solution' are you talking about ? | 13:54.44 |
| icyjug | but the automatization of the process seems too alien | 13:54.44 |
| | the third one | 13:55.08 |
| | that automates the process | 13:55.16 |
| kens | Then you need to modify the pdfmarks, clearly | 13:55.32 |
| | There is no automation there, you need to create 'control.ps' yourself. That's the PostScript which contains the pdfmarks which write the outlines (bookmarks) | 13:56.17 |
| | Hmm, actually Ray did add code to do that, so there you go, its all there | 13:56.51 |
| icyjug | so the third solution is not automated? | 13:57.03 |
| kens | In a sense, there's a PostScript program which you can run which will do what you (seem to) want. | 13:57.52 |
| icyjug | kens i guess this script doesnt preserve the original filenames right? | 13:58.55 |
| | it is using some kind of counters for the pages as i understand | 13:59.17 |
| kens | The PostScript program itereates through the files matching a filesepc and write a boomark containing each filename. | 13:59.42 |
| icyjug | kens i also guess it writes the bookmark in every next page? | 14:02.14 |
| | so it works only if original pdfs are of 1 page | 14:02.39 |
| kens | You can't write bookmarks for 'every page', there is only one set of bookmarks per file. | 14:02.41 |
| icyjug | i mean, the PN (PageNumber ?) of the bookmark is determined by a counter | 14:03.33 |
| kens | The code you are pointing at will only work if each PDF is a single page yes | 14:03.40 |
| | You can do more sophisticated coding, as exemplified by the pdf_info.ps program which can determine the number of pages in a PDF file. | 14:04.13 |
| | So if you borrowed from that, you could create a PostScript file which contained appropriate deestinations for each bookmark. | 14:04.46 |
| | You would want to run that PostScript program *before* starting to process the PDF files, and then execute the assembled pdfmarks *after* finishing processing the PDF files | 14:05.27 |
| icyjug | kens hmm pdf_info.ps? i cant see where that is.. | 14:05.43 |
| kens | in ghostpdl/toolbin/pdf_info.ps | 14:05.55 |
| chrisl | You can get it direct from git on the web: http://git.ghostscript.com/?p=ghostpdl.git;a=blob_plain;f=toolbin/pdf_info.ps;hb=HEAD | 14:07.36 |
| kens | icyjug : The final part of that answer runs each file and then looks at the current page number. SO the page number is bumped up by the number of pages that were in the file. SO that seems like a pretty complete solution to me. | 14:12.18 |
| icyjug | man borrowing from this is too much for my level, i have no idea what this language is.. | 14:12.20 |
| kens | Its PostScript | 14:12.28 |
| icyjug | i guess this could come in handy? usage: gs -dNODISPLAY -q -sFile=____.pdf [-dDumpMediaSizes=false] [-dDumpFontsNeeded=false] [-dDumpXML] | 14:12.30 |
| | 22 % [-dDumpFontsUsed [-dShowEmbeddedFonts] ] toolbin/pdf_info.ps | 14:12.30 |
| kens | As I said above, the final solution in the SO answer you pointed at looks like it will do the entire job of generating the pdfmark, including getting the page count correct for each bookmark | 14:13.19 |
| icyjug | kens yeah i read that i am trying to fully understand the situation :D | 14:14.33 |
| kens | But anyway, you can probably see that, as I previously said, while you can do this, its not easy. | 14:14.41 |
| icyjug | kens you also said i could borrow from the pdf_info.ps, do you really mean borrowing code or is there a simpler way? | 14:17.06 |
| kens | I meant borrowing code. | 14:17.21 |
| icyjug | there was also a "usage" part in the comment on the top of that file | 14:17.59 |
| kens | You can use PostScript to control Ghostscript and its a powerful means of doing so, because its a complete programming language. | 14:18.11 |
| | Yes, and the usage tells you how to use the file.... | 14:18.21 |
| | But determining the number of pages in a PDF file is only part of what ot does. You would want to borrow that part | 14:18.53 |
| icyjug | but it doesnt show a command for printing *onyl* the number of pages of a file... | 14:19.12 |
| | at least from what i see | 14:19.18 |
| kens | I don't think I said ti did :-) | 14:19.35 |
| icyjug | ah ok :D | 14:19.53 |
| | kens i can understand a bit of bash | 14:20.11 |
| | but here i have no idea where that part is | 14:20.22 |
| kens | PostScript is not bash, more like FOrth | 14:20.23 |
| | Its a stack-based reverse-Polish notation language | 14:20.38 |
| | () = ( ) print print ( has ) print | 14:21.45 |
| | PDFPageCount dup =print 10 mod 1 eq { ( page.\n) } { ( pages\n) } ifelse = flush | 14:21.45 |
| | That's where the page count is printed | 14:22.01 |
| | And tnhis is where its determined and stored: | 14:22.35 |
| | "/dump { % (title) -> - | 14:22.39 |
| | " /PDFPageCount pdfpagecount def | 14:22.39 |
| | So you would need some PostScirpt like: | 14:25.02 |
| | (filename.pdfg) (r) runpdfbegin pdfpagecount == flush runpdfend | 14:25.02 |
| icyjug | kens printed as in "echo" or as in "saved in an array"? | 14:25.04 |
| | that seems like an array to me.. | 14:25.10 |
| kens | printed as in echo, ie sent to stdout | 14:25.17 |
| icyjug | (filename.pdfg) (r) runpdfbegin pdfpagecount == flush runpdfend | 14:25.57 |
| kens | That should (I htink) print the number of pages on stdout | 14:26.16 |
| icyjug | i guess this one + the entire script? | 14:26.16 |
| kens | THat line just prints the number of pages in a given PDF file to stdout. | 14:26.33 |
| icyjug | wow.. | 14:26.53 |
| kens | So you would need to run that line for each input file, adding the number of pages together as you go, and emitting a pdfmark for each filename using the current page count. | 14:29.05 |
| | Doesn't look har dfor a PostScript programmer, but I'm too busy to tackle ti right now | 14:29.42 |
| Diemex | tor8: I was able to get the .so files using the lxss for windows. | 15:08.02 |
| | Took quite a while as I had to redownload everything for linux | 15:08.45 |
| | tor8: I copied the .so files from the /libs folder into my jni folder and copied the Java classes from /libmupdf/platform/java/src into my src folder | 15:31.29 |
| | Now I'm getting an error that the jni functions cannot be resolved Cannot resolve corresponding JNI function Java_com_artifex_mupdf_fitz_Annotation_finalize | 15:32.00 |
| | Okay. There are still compilation errors. -.- Running nm -g libmupdf_java.so shows that it has no symbols. I think I'm going to do it in a Ubuntu VM later | 15:43.01 |
| ray_laptop | mvrhel_laptop: Ted sent around the logo to use. for Artifex -- or did you mean for your viewer app | 20:23.48 |
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