diff options
Diffstat (limited to 'lv2/worker/worker.meta.ttl')
-rw-r--r-- | lv2/worker/worker.meta.ttl | 53 |
1 files changed, 51 insertions, 2 deletions
diff --git a/lv2/worker/worker.meta.ttl b/lv2/worker/worker.meta.ttl index f25c2c3..1ed077a 100644 --- a/lv2/worker/worker.meta.ttl +++ b/lv2/worker/worker.meta.ttl @@ -1,12 +1,14 @@ @prefix dcs: <http://ontologi.es/doap-changeset#> . @prefix doap: <http://usefulinc.com/ns/doap#> . @prefix foaf: <http://xmlns.com/foaf/0.1/> . +@prefix lv2: <http://lv2plug.in/ns/lv2core#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . +@prefix work: <http://lv2plug.in/ns/ext/worker#> . <http://lv2plug.in/ns/ext/worker> a doap:Project ; doap:name "LV2 Worker" ; - doap:shortdesc "Support for a non-realtime plugin worker method." ; + doap:shortdesc "Support for doing non-realtime work in plugins." ; doap:created "2012-03-22" ; doap:developer <http://drobilla.net/drobilla#me> ; doap:release [ @@ -29,5 +31,52 @@ rdfs:label "Initial release." ] ] - ] . + ] ; + lv2:documentation """ + +This extension allows plugins to schedule work that must be performed in +another thread. Plugins can use this interface to safely perform work that is +not real-time safe, and receive the result in the run context. The details of +threading are managed by the host, allowing plugins to be simple and portable +while using resources more efficiently. + +This interface is designed to gracefully support single-threaded synchronous +execution, which allows the same code to work with sample accuracy for offline +rendering. For example, a sampler plugin may schedule a sample to be loaded +from disk in another thread. During live execution, the host will call the +plugin's work method from another thread, and deliver the result to the audio +thread when it is finished. However, during offline export, the +<q>scheduled</q> load would be executed immediately in the same thread. This +enables reproducible offline rendering, where any changes affect the output +immediately regardless of how long the work takes to execute. + +"""^^lv2:Markdown . + +work:interface + lv2:documentation """ + +The work interface provided by a plugin, LV2_Worker_Interface. + + :::turtle + + @prefix work: <http://lv2plug.in/ns/ext/worker#> . + + <plugin> + a lv2:Plugin ; + lv2:extensionData work:interface . + +"""^^lv2:Markdown . + +work:schedule + lv2:documentation """ + +The work scheduling feature provided by a host, LV2_Worker_Schedule. + +If the host passes this feature to LV2_Descriptor::instantiate, the plugin MAY +use it to schedule work in the audio thread, and MUST NOT call it in any other +context. Hosts MAY pass this feature to other functions as well, in which case +the plugin MAY use it to schedule work in the calling context. The plugin MUST +NOT assume any relationship between different schedule features. + +"""^^lv2:Markdown . |