diff options
Diffstat (limited to 'ext/midi.lv2/midi.ttl')
| -rw-r--r-- | ext/midi.lv2/midi.ttl | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/ext/midi.lv2/midi.ttl b/ext/midi.lv2/midi.ttl new file mode 100644 index 0000000..12725ad --- /dev/null +++ b/ext/midi.lv2/midi.ttl @@ -0,0 +1,87 @@ +# LV2 MIDI Extension +# Copyright (C) 2008 David Robillard <d@drobilla.net> +# +# Based on lv2-midiport.h: +# Copyright (C) 2006 Lars Luthman <lars.luthman@gmail.com> +# +# Permission is hereby granted, free of charge, to any person obtaining a +# copy of this software and associated documentation files (the "Software"), +# to deal in the Software without restriction, including without limitation +# the rights to use, copy, modify, merge, publish, distribute, sublicense, +# and/or sell copies of the Software, and to permit persons to whom the +# Software is furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included +# in all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR +# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +# OTHER DEALINGS IN THE SOFTWARE. + +@prefix midi: <http://lv2plug.in/ns/ext/midi#> . +@prefix lv2: <http://lv2plug.in/ns/lv2core#> . +@prefix lv2ev: <http://lv2plug.in/ns/ext/events#> . +@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . +@prefix doap: <http://usefulinc.com/ns/doap#> . +@prefix foaf: <http://xmlns.com/foaf/0.1/> . + +<http://lv2plug.in/ns/ext/midi> a lv2:Specification ; + doap:license <http://usefulinc.com/doap/licenses/mit> ; + doap:name "LV2 MIDI Events" ; + rdfs:comment "Defines an LV2 event type for standard raw MIDI" ; + doap:release [ + doap:revision "1" ; + doap:created "2008-08-11" ; + ] ; + doap:maintainer [ + a foaf:Person ; + foaf:name "David Robillard" ; + foaf:homepage <http://drobilla.net/> ; + rdfs:seeAlso <http://drobilla.net/drobilla.xrdf> + ] , [ + a foaf:Person ; + foaf:name "Lars Luthman" ; + ] . + + +midi:MidiEvent a rdfs:Class ; + rdfs:label "LV2 MIDI event" ; + rdfs:subClassOf lv2ev:Event ; + rdfs:comment """ +A single raw (sequence of bytes) MIDI event. + +These events are equivalent to standard MIDI events, with the following +restrictions to ease the burden on plugin authors: +<ul> + <li>Running status is not allowed. Every event must have its own status + byte.</li> + + <li>Note On events with velocity 0 are not allowed. These events are + equivalent to Note Off in standard MIDI streams, but in order to make + plugins and hosts easier to write, as well as more efficient, only proper + Note Off events are allowed as Note Off.</li> + + <li>"Realtime events" (status bytes 0xF8 to 0xFF) are allowed, but may + not occur inside other events like they are allowed to in hardware MIDI + streams.</li> + + <li>All events must be fully contained in a single data buffer, i.e. events + may not "wrap around" by storing the first few bytes in one buffer and + then wait for the next run() call to store the rest of the event. If + there isn't enough space in the current data buffer to store an event, + the event will either have to wait until next run() call, be ignored, + or compensated for in some more clever way.</li> + + <li>All events must be valid MIDI events. This means for example that + only the first byte in each event (the status byte) may have the eighth + bit set, that Note On and Note Off events are always 3 bytes long etc. + The MIDI writer (host or plugin) is responsible for writing valid MIDI + events to the buffer, and the MIDI reader (plugin or host) can assume that + all events are valid.</li> +</ul> +"""^^lv2:basicXHTML . + |