Using Standard .so files in GStreamer - gstreamer

Question

I'm a beginner in GStreamer programming.
I created a pipeline for playing media in a file.
I would like to use libogg.so for decoding the ogg format files rather than libgstogg.so.
How can i use the this decoder in my pipeline?

Answer 1

Everybody is beginner in gstreamer programming it seems :)
You will have to write a program, may be C program and link it against libogg.so rather than libgstogg.so
You can achieve above easily using cmake
To be confirm what lib the program picked for linking,
You may try renaming libgstogg or
Running strace to see which location the binary picked the file
Create a shared library of your program and run ldd

Answer 2

you seem to miss some basic concepts here:
gstreamer is a framework to build media pipelines from elements
elements are defined via a plugin-system. the plugin-files are shared-objects (.so) files
you cannot use just any shared-object as a plugin (gstreamer will not recognize e.g. libc.so as a plugin - simply because libc.so does not provide a gstreamer plugin)
so in your special case you want to exchange libgstogg.so by libogg.so.
now libgstogg.so is a shared object, that provides the ogg family of gstreamer plugins.
on the other side libogg.so is an implementation of an ogg muxer/demuxer that has nothing to do with gstreamer.
if you want to use libogg.so you will have to create your own gstreamer-plugin that uses libogg.so. check the documentation on how to do that.
before you do so, check what libgstogg.so actually does. you will disover, that it provides a gstreamer plugin that uses libogg.so to do the actual muxing/demuxing. it is really just the bridge that you are looking for:
$ ldd /usr/lib/x86_64-linux-gnu/gstreamer-0.10/libgstogg.so | grep ogg
libogg.so.0 => /usr/lib/x86_64-linux-gnu/libogg.so.0 (0x00007fc3f9ae7000)