Gracefully handle plugins with illegal groups that contain no symbol by
treating ports in that group normally (i.e. as if they weren't part of a
group). The port groups spec mandates that groups have a valid unique
symbol, but plugins aren't perfect...
Make (conceptually) static plugin variables actually (C) static,
and clean up SLV2 related things with a GCC shared library destructor,
if GCC is in use.
This queries port roles from the LV2 data and converts it into GStreamer
channel positions. This should allow any type of multi-channel plugin
(including beyond stereo, e.g. surround) to work fine in GStreamer,
and with elements that require channel positions to be explicitly stated.
This first counts ports (using the builtin slv2 functions to do so
rather than manually as before), then creates descriptors for each port
and finds all port groups. Only then are pad templates created (towards
using group information for creating multi-channel pads).
- Separate gstsignalprocessor into a separate library (not sure if this
is in the right place, but it works for now anyway)
- Create LV2 element based on LADSPA element, port most discovery
functionality
