Re: [osg-users] Trouble loading OSG plugins
No, we are working internally on this one until is completed. It's a major overhaul to compilation in Android. The undefined error will be, probably, for the stl library because in certain versions of the NDK you need to link specifically against the libgnu_stl not only wait the ndk to do it for you. NDK in some versions do a lot of weird things in this matter, and there are versions that completely broke several things. 2013/9/11 Preet prismatic.proj...@gmail.com you have a public repo where you are testing this out? I suspect you're setting up a build similar to the static one where CMakeLists will do most of the magic. My build notes are here (still have to add some stuff, but its mostly complete: ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Trouble loading OSG plugins
I wasn't able to build the static version of OpenSceneGraph using the provided guide, so I tried building a shared version directly using CMake and the Android NDK toolchain which seems to have worked. The problem I have right now is with osgPlugins-x.y.z being prefixed to the search path by OSG. As an experiment, I put some osgPlugins in the sdcard folder (external storage) /sdcardpath/osgPlugins-x.y.z/ and if I explicitly specify this path (/sdcardpath) to the osgDB::Registry, it loads the plugins just fine. This isn't okay for general app deployment though. I was able to pack shared object (plugin) files without a 'lib' prefix in the APK/lib directory. I'm unable to create any more directories in APK/lib. Unfortunately I can't load these because (I think) OSG is prefixing the path with osgPlugins-x.y.z.. I want to disable this behavior so I can package the app properly. On Tue, Sep 10, 2013 at 3:32 PM, Jorge Izquierdo Ciges jori...@gmail.comwrote: Android has a serie of troubles: 1rst every library has to begin with lib if has to be included in the APK 2nd every library has to be loaded at the first try or will never be loaded until you close your application 3rd If your library needs a dependence he will not load it even if its on the same directory So... 1rst - OSG searches plugins without lib at the begin and they are compiled with lib if my memory is well enough. 2nd - this is confirmed for versions pre 4.2 3rd - this is confirmed for versions pre 4.2 At least on a Nexus 4 the 2/3 don't happen anymore with the last version. I have OSG with shared libraries and plugins in Android but it is far from submission because we changed a lot of things and we are checking everything thrice, so don't expect it soon. But... you can make it work, my phone is proof. 2013/9/10 Preet prismatic.proj...@gmail.com m to create an osgPlugins directory where OSG ends up being deployed in the application package so I just want OSG to load plugins from the directory where the rest of the shared objects live on Android: /data/app-lib/org.some.app/--- where all the *.so libraries live, including osgdb_xx.so ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Trouble loading OSG plugins
Hi Preet, For the path prefix, not sure if it works, but look at src/osgDB/Registry.cpp, and the function createLibraryNameForExtension, you will see a: std::string prepend = std::string(osgPlugins-)+std::string(osgGetVersion())+std::string(/); so if you create an empty string it may address your path issue. Yet, it will be preferable that you build everything in static mode: what was the reasons your static built didn't work? C. Raphael ... Thank you! Cheers, Raphael -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=56237#56237 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Trouble loading OSG plugins
Android has a serie of troubles: 1rst every library has to begin with lib if has to be included in the APK 2nd every library has to be loaded at the first try or will never be loaded until you close your application 3rd If your library needs a dependence he will not load it even if its on the same directory So... 1rst - OSG searches plugins without lib at the begin and they are compiled with lib if my memory is well enough. 2nd - this is confirmed for versions pre 4.2 3rd - this is confirmed for versions pre 4.2 At least on a Nexus 4 the 2/3 don't happen anymore with the last version. I have OSG with shared libraries and plugins in Android but it is far from submission because we changed a lot of things and we are checking everything thrice, so don't expect it soon. But... you can make it work, my phone is proof. 2013/9/10 Preet prismatic.proj...@gmail.com m to create an osgPlugins directory where OSG ends up being deployed in the application package so I just want OSG to load plugins from the directory where the rest of the shared objects live on Android: /data/app-lib/org.some.app/--- where all the *.so libraries live, including osgdb_xx.so ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Trouble loading OSG plugins
I'm having issues trying to get OSG to load plugins on Android for a shared library build... though OSG seems to be working fine on Android as a shared lib without plugins which is great! I can't seem to create an osgPlugins directory where OSG ends up being deployed in the application package so I just want OSG to load plugins from the directory where the rest of the shared objects live on Android: /data/app-lib/org.some.app/--- where all the *.so libraries live, including osgdb_xx.so So I do this: osgDB::Registry::instance()-setLibraryFilePathList(/data/app-lib/org.some.app); But it seems like its prefixing 'osgPlugins-3.3.0' to its search path. This is the output I get from OSG: Warning: dynamic library 'osgPlugins-3.3.0/osgdb_png.so' does not exist (or isn't readable): Cannot load library: load_library(linker.cpp:745): library osgPlugins-3.3.0/osgdb_png.so not found DynamicLibrary::failed loading osgPlugins-3.3.0/osgdb_png.so Is there something else I need to do to specify the path where it should search? Is there a way to avoid creating an osgPlugins folder altogether as a build option and just have it look for the plugins without prefixing anything to their path? I ran across this problem when using OSG for another platform as well and worked around it using a few tricks but Android is much less tolerant in this regard. Preet ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Trouble loading OSG plugins
On Tue, Sep 10, 2013 at 3:32 PM, Jorge Izquierdo Ciges jori...@gmail.com wrote: So... 1rst - OSG searches plugins without lib at the begin and they are compiled with lib if my memory is well enough. You were right. I was able to build an APK with the plugin files (named osgdb_xx.so) but after deploying to the device itself all the plugin shared objects were no longer in /data/app-lib/org.some.app/ I have OSG with shared libraries and plugins in Android but it is far from submission because we changed a lot of things and we are checking everything thrice, so don't expect it soon. Do you have a public repo where you are testing this out? I suspect you're setting up a build similar to the static one where CMakeLists will do most of the magic. My build notes are here (still have to add some stuff, but its mostly complete: https://github.com/preet/scratch/wiki/OpenSceneGraph-on-Android) On Tue, Sep 10, 2013 at 6:10 PM, Raphael Grasset raphael.gras...@gmail.com wrote: Hi Preet, For the path prefix, not sure if it works, but look at src/osgDB/Registry.cpp, and the function createLibraryNameForExtension, you will see a: std::string prepend = std::string(osgPlugins-)+std::string(osgGetVersion())+std::string(/); so if you create an empty string it may address your path issue. This set me on the right path to try an alternative once I realized I couldn't pack the default osgdb_xx.so plugins in with the APK libs. I used the osgPlugins CMake and set the TARGET_DEFAULT_PREFIX to libosgdb_ (and modified createLibraryNameForExtension accordingly). Prefixing them with lib meant they actually showed up on the device when I deployed the APK... and I just ended up loading the plugins directly with the linker (ie i just explicitly linked against them when I built the app). Doing all that takes a lot of effort though... it's cleaner (from OSG's stand point) to save the plugins in internal storage and access them that way. The cost with that method is the plugins have to be packed and then extracted/installed during the application's first run. Yet, it will be preferable that you build everything in static mode: what was the reasons your static built didn't work? I was able to configure the build using CMake successfully, but calling make in the build directory fails with a bunch of 'undefined reference to' errors: I explained it briefly here: http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/2013-September/064587.html Regards, Preet ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
