GStreamer will not recognize my plugin
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So I'm trying to write a plugin and seemed to have tripped over the starting
line. I have read in the docs that I should use gst-element-maker to create a basic template for a plugin. So I give it a try: ./gst-element-maker myplugin382 basetransform So not only did that create the .h and .c files, it also creates the .so library file gstmyplugin382.so. Wow, cool. So now I only have to copy the gstmyplugin382.so into the directory where all the other gst-plugins reside and GStreamer will magically see recognize it. Excellent! And so I copied gstmyplugin382.so to /usr/lib/x86_64-linux-gnu and ran gst-inspect-1.0. But no joy. It doesn't work. I have spent the day trying slight variations, searching the internet for solutions, and trying out different suggestions. And still no joy. Was this supposed to work? Am I missing a step? How is GStreamer supposed to recognize plugins? -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: GStreamer will not recognize my plugin
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On Mon, 2019-10-21 at 16:43 -0500, William wrote:
> So I'm trying to write a plugin and seemed to have tripped over the > starting > line. I have read in the docs that I should use gst-element-maker to > create > a basic template for a plugin. So I give it a try: > > ./gst-element-maker myplugin382 basetransform > > So not only did that create the .h and .c files, it also creates the > .so > library file gstmyplugin382.so. > Wow, cool. So now I only have to copy the gstmyplugin382.so into the > directory where all the other gst-plugins reside and GStreamer will > magically see recognize it. Excellent! And so I copied > gstmyplugin382.so to > /usr/lib/x86_64-linux-gnu and ran gst-inspect-1.0. But no joy. It > doesn't > work. > I have spent the day trying slight variations, searching the internet > for > solutions, and trying out different suggestions. And still no joy. > Was this supposed to work? Am I missing a step? How is GStreamer > supposed to > recognize plugins? The plugin name needs to match the lib.so name. If your plugin is named "foo", the lib file should be named "libgstfoo.so". Philippe > > > > -- > Sent from: http://gstreamer-devel.966125.n4.nabble.com/ > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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In reply to this post by William
Well OK. This is lame, but for the record the problem was that I was
putting it in the wrong directory. While there are a lot of libgst*.so files in /usr/lib/x86_64-linux-gnu the place it actually needed to be was in /usr/lib/x86_64-linux-gnu/gstreamer-1.0. Yeah, that cost me a day. LOL On 10/21/2019 4:43 PM, William wrote: > So I'm trying to write a plugin and seemed to have tripped over the starting > line. I have read in the docs that I should use gst-element-maker to create > a basic template for a plugin. So I give it a try: > > ./gst-element-maker myplugin382 basetransform > > So not only did that create the .h and .c files, it also creates the .so > library file gstmyplugin382.so. > Wow, cool. So now I only have to copy the gstmyplugin382.so into the > directory where all the other gst-plugins reside and GStreamer will > magically see recognize it. Excellent! And so I copied gstmyplugin382.so to > /usr/lib/x86_64-linux-gnu and ran gst-inspect-1.0. But no joy. It doesn't > work. > I have spent the day trying slight variations, searching the internet for > solutions, and trying out different suggestions. And still no joy. > Was this supposed to work? Am I missing a step? How is GStreamer supposed to > recognize plugins? > > > > -- > Sent from: http://gstreamer-devel.966125.n4.nabble.com/ > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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Another option is to set an environment variable GST_PLUGIN_PATH which points to a folder where your plugins are stored. Sorry I didn't notify you a day earlier. On Tue, Oct 22, 2019 at 7:42 AM William Johnston <[hidden email]> wrote: Well OK. This is lame, but for the record the problem was that I was _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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I tried the and it didn't work when I tried it, but not because there was
anything wrong with the path. It turns out that the plugin I was trying to use I compiled myself and the options weren't set just right for GStreamer to recognize that it was a plugin. I have finally figured that out. Now I'm trying to tell cmake how to compile plugins. David Ing wrote > Another option is to set an environment variable GST_PLUGIN_PATH which > points to a folder where your plugins are stored. Sorry I didn't notify > you a day earlier. -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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Well, I wanted to post this as it might be useful to someone else. The
biggest problem I has was in naming the library file. If the plugin is X then the library file needs to be named "X.so" or "gstX.so" or "libgstX.so." If it's anything else then gst-inspect-1.0 will give you the message: Could not load plugin file: File "./libgstmyplugin38.so" is not a GStreamer plugin So, if you name your library "test.so" like I did, you will never get it to work. This is for 1.16, naming the library "test.so" on 1.8 did work. -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/ _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
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