How does gstreamer handle plugins with the library suffix "-1.0.so"

[Nicolas Dufresne]

Le mer. 13 juin 2018 07:27, jimfcarroll <jimfcarroll at gmail.com> a écrit :

> Philippe and Nicolas,
>
> Thanks for the responses. There is a mismatch in the expectations with the
> java code. I will take it up with them on that list. You can see the
> problem
> here:
>
> https://github.com/gstreamer-java/gst1-java-core/blob/v0.9.3/src/org/freedesktop/gstreamer/lowlevel/GstNative.java#L35
>
> Notice, this value is defaulted to "%s-1.0". It's a template that forms the
> name of the library from the name of the plugin. In order to change the
> default, because it's "final static" you MUST supply the value as a -D
> parameter on the runtime java command line. It cannot reliably be changed
> programatically.
>
> However, to get gstreamer to load it at all, it can no longer be named
> XXXX-1.0.
>
> I will take this up with the guys over on the Java group. Thanks.
>
> Also, I'm pretty sure the only reason it works at all, since this code is
> also used to load native plugins that are part of the distribution, is
> because the lib directory ALSO contains versions of the libraries named
> -1.0.so, which is why I mentioned that it appears many (most?) plugin libs
> are named this way. For example, "ls llibgst*.so | cat" from the lib
> directory gives:
>
> libgstadaptivedemux-1.0.so
> libgstallocators-1.0.so
> libgstapp-1.0.so
> libgstaudio-1.0.so
> libgstbadaudio-1.0.so
> libgstbadvideo-1.0.so
> libgstbase-1.0.so
> libgstbasecamerabinsrc-1.0.so
> libgstcheck-1.0.so
> libgstcodecparsers-1.0.so
> libgstcontroller-1.0.so
> libgstfft-1.0.so
> libgstgl-1.0.so
> libgstinsertbin-1.0.so
> libgstisoff-1.0.so
> libgstmpegts-1.0.so
> libgstnet-1.0.so
> libgstopencv-1.0.so
> libgstpbutils-1.0.so
> libgstphotography-1.0.so
> libgstplayer-1.0.so
> libgstreamer-1.0.so
> libgstriff-1.0.so
> libgstrtp-1.0.so
> libgstrtsp-1.0.so
> libgstsdp-1.0.so
> libgsttag-1.0.so
> libgsturidownloader-1.0.so
> libgstvideo-1.0.so
> libgstwayland-1.0.so
> libgstwebrtc-1.0.so
>
> Note, this is a FRESH install of Ubuntu 18.04 with additional gstreamer
> libs
> added from the default package manager.
>
> I'm not sure if this is a 1.14 oversight that these libraries are still
> installed but I'm pretty sure it's the only reason the java API works at
> all.
>

Be aware the these a libraries, not plugins. We do version on our libraries
so they can be installed in parallel with 0.10 ones.


> Thanks again.
> Jim
>
>
>
>
>
>
> --
> Sent from: http://gstreamer-devel.966125.n4.nabble.com/
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