[LAA] LV2 4.0

David Robillard d at drobilla.net
Sat Mar 19 04:09:25 UTC 2011

LV2 4.0 is out.

More information about LV2 can be found at: http://lv2plug.in

This release is a significant one, fixing many problems and introducing 
a new standard (though optional) method of depending on LV2 extensions. 
In particular, it is now possible to install system-wide extensions and 
build against them using a standard include style (without requiring a 
central authority on extension package names). The lv2core package, as 
of this version, includes a utility called lv2config that makes this 
See http://lv2plug.in/docs/index.php?title=Using_Extensions_in_Code for 

Changes (non-exhaustive):

   * Make doap:license suggested, but not required (for wrappers)
   * Define lv2:binary (MUST be in manifest.ttl)
   * Define lv2:majorVersion and lv2:minorVersion (MUST be in manifest.ttl)
   * Define lv2:documentation and use it to document lv2core
   * Add lv2:FunctionPlugin and lv2:ConstantPlugin classes
   * Move lv2:AmplifierPlugin under lv2:DynamicsPlugin
   * Loosen domain of lv2:optionalFeature and lv2:requiredFeature
     (to allow re-use in extensions)
   * Add generic lv2:Resource and lv2:PluginBase classes
   * Fix definition of lv2:minimum etc. (used for values, not scale points)
   * More precisely define properties with OWL
   * Move project metadata to manifest
   * Add lv2:enumeration port property.
   * Define run() pre-roll special case (sample_count == 0).

Release tarball is available at: http://lv2plug.in/spec/lv2core-4.0.tar.bz2
Documentation for LV2 core is available at: http://lv2plug.in/ns/lv2core 

Share and enjoy,


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