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The plugin meta-data file is a UTF-8 text file named with ".info" after the plugin base name. Given our "foobar" example, this would be "foobar.info".
For example, for a gmp-foobar plugin, the disk layout on Windows for version "0.1" would be:
<pre>
gmp-foobar/
gmp-foobar/0.1
gmp-foobar/0.1/foobar.dll
gmp-foobar/0.1/foobar.info
</pre>
== The Dynamic Library ==
Firefox addons and the Firefox addon manager tells Gecko where to look for plugins, using the mozIGeckoMediaPluginService.addPluginDirectory and .removePluginDirectory API.
Developers prototyping new addons may also use the environment variable MOZ_GMP_PATH to specify a list of directories. Note that the paths set in MOZ_GMP_PATH must still conform to the rules in "On Disk Layout" above, i.e. the path points to the "version" subdirectory, which has a parent directory whose name has a "gmp-" prefix. i.e. <code>MOZ_GMP_PATH=/home/username/src/gmp-foobar/0.1/</code>.
It maintains a list of known GMPs, and when an API is requested by a consumer it scans the list for a GMP that can provide the API.
