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refine lua-script documentation

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This commit is contained in:
Robin Gareus 2016-07-10 16:48:38 +02:00
parent 7745a37394
commit 4bb54f4128
4 changed files with 35 additions and 16 deletions
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20
scripts/rawmidi.lua
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@ -16,18 +16,24 @@ end
function dsp_has_midi_input () return true end
function dsp_has_midi_output () return true end
-- "dsp_runmap" uses Ardour's internal processor API, eqivalent to
-- 'connect_and_run()". There is no overhead (mapping, translating buffers).
-- The lua implementation is responsible to map all the buffers directly.
function dsp_runmap (bufs, in_map, out_map, n_samples, offset)
local ib = in_map:get(ARDOUR.DataType("midi"), 0); -- get id of input buffer
local ob = in_map:get(ARDOUR.DataType("midi"), 0); -- get id of output buffer
-- see http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:ChanMapping
local ib = in_map:get (ARDOUR.DataType ("midi"), 0); -- get index of the 1st mapped midi input buffer
local ob = in_map:get (ARDOUR.DataType ("midi"), 0); -- get index of the 1st mapped midi output buffer
assert (ib ~= ARDOUR.ChanMapping.Invalid);
assert (ib == ob); -- inplace, buffers are identical
assert (ib == ob); -- require inplace, buffers are identical
local mb = bufs:get_midi (ib)
events = mb:table() -- copy event list into lua table
-- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:MidiBuffer
local mb = bufs:get_midi (ib) -- get the mapped buffer
events = mb:table () -- copy event list into a lua table
-- iterate over all midi events
for _,e in pairs (events) do
-- e is an http://ardourman/lua-scripting/class_reference/#Evoral:MidiEvent
--
-- e is-a http://manual.ardour.org/lua-scripting/class_reference/#Evoral:MidiEvent
--print (e:channel())
end
end