diff options
author | Robin Gareus <robin@gareus.org> | 2016-08-10 03:12:11 +0200 |
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committer | Robin Gareus <robin@gareus.org> | 2016-08-10 03:12:11 +0200 |
commit | a8143ea44e83a87fb6a9500d59409a14a94ad655 (patch) | |
tree | 3aac8610dc26fb63abd4cc1c7afe864714a2f408 /scripts/rawmidi.lua | |
parent | 2b7a89ecffa92a616cd61774d42bea1e99db6f79 (diff) |
prefix no-inst script with an underscore and skip install
Diffstat (limited to 'scripts/rawmidi.lua')
-rw-r--r-- | scripts/rawmidi.lua | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/scripts/rawmidi.lua b/scripts/rawmidi.lua deleted file mode 100644 index 672a37da81..0000000000 --- a/scripts/rawmidi.lua +++ /dev/null @@ -1,111 +0,0 @@ -ardour { - ["type"] = "dsp", - name = "Midi Passthru", - category = "Example", - license = "MIT", - author = "Ardour Lua Task Force", - description = [[An Example Audio/MIDI Passthrough Plugin using Buffer Pointers]] -} - --- return possible audio i/o configurations -function dsp_ioconfig () - -- -1, -1 = any number of channels as long as input and output count matches - -- require 1 MIDI in, 1 MIDI out. - return { { midi_in = 1, midi_out = 1, audio_in = -1, audio_out = -1}, } -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) - - -- 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 - assert (ib ~= ARDOUR.ChanMapping.Invalid) - - if ib ~= ARDOUR.ChanMapping.Invalid then - -- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:MidiBuffer - local mb = bufs:get_midi (ib) -- get the mapped buffer - local events = mb:table () -- copy event list into a lua table - - -- iterate over all MIDI events - for _, e in pairs (events) do - -- e is-a http://manual.ardour.org/lua-scripting/class_reference/#Evoral:MidiEvent - - -- do something with the event e.g. - print (e:channel (), e:time (), e:size (), e:buffer ():array ()[1], e:buffer ():get_table (e:size ())[1]) - end - end - - ---- - -- The following code is needed with "dsp_runmap" to work for arbitrary pin connections - -- this passes though all audio/midi data unprocessed. - - ARDOUR.DSP.process_map (bufs, in_map, out_map, n_samples, offset, ARDOUR.DataType ("audio")) - ARDOUR.DSP.process_map (bufs, in_map, out_map, n_samples, offset, ARDOUR.DataType ("midi")) - - -- equivalent lua code. - -- NOTE: the lua implementation below is intended for io-config [-1,-1]. - -- It only works for actually mapped channels due to in_map:count() out_map:count() - -- being identical to the i/o pin count in this case. - -- - -- Plugins that have multiple possible configurations will need to implement - -- dsp_configure() and remember the actual channel count. - -- - -- ARDOUR.DSP.process_map() does iterate over the mapping itself and works generally. - -- Still the lua code below does lend itself as elaborate example. - -- - --[[ - - local audio_ins = in_map:count (): n_audio () -- number of mapped audio input buffers - local audio_outs = out_map:count (): n_audio () -- number of mapped audio output buffers - assert (audio_outs, audio_ins) -- ioconfig [-1, -1]: must match - - -- copy audio data if any - for c = 1, audio_ins do - local ib = in_map:get (ARDOUR.DataType ("audio"), c - 1) -- get index of mapped input buffer - local ob = out_map:get (ARDOUR.DataType ("audio"), c - 1) -- get index of mapped output buffer - if ib ~= ARDOUR.ChanMapping.Invalid and ob ~= ARDOUR.ChanMapping.Invalid and ib ~= ob then - -- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:DSP - -- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:AudioBuffer - ARDOUR.DSP.copy_vector (bufs:get_audio (ob):data (offset), bufs:get_audio (ib):data (offset), n_samples) - end - end - -- Clear unconnected output buffers. - -- In case we're processing in-place some buffers may be identical, - -- so this must be done *after* copying relvant data from that port. - for c = 1, audio_outs do - local ib = in_map:get (ARDOUR.DataType ("audio"), c - 1) - local ob = out_map:get (ARDOUR.DataType ("audio"), c - 1) - if ib == ARDOUR.ChanMapping.Invalid and ob ~= ARDOUR.ChanMapping.Invalid then - bufs:get_audio (ob):silence (n_samples, offset) - end - end - - -- copy midi data - local midi_ins = in_map:count (): n_midi () -- number of midi input buffers - local midi_outs = out_map:count (): n_midi () -- number of midi input buffers - - -- with midi_in=1, midi_out=1 in dsp_ioconfig - -- the following will always be true - assert (midi_ins == 1) - assert (midi_outs == 1) - - for c = 1, midi_ins do - local ib = in_map:get (ARDOUR.DataType ("midi"), c - 1) - local ob = out_map:get (ARDOUR.DataType ("midi"), c - 1) - if ib ~= ARDOUR.ChanMapping.Invalid and ob ~= ARDOUR.ChanMapping.Invalid and ib ~= ob then - bufs:get_midi (ob):copy (bufs:get_midi (ib)) - end - end - -- silence unused midi outputs - for c = 1, midi_outs do - local ib = in_map:get (ARDOUR.DataType ("midi"), c - 1) - local ob = out_map:get (ARDOUR.DataType ("midi"), c - 1) - if ib == ARDOUR.ChanMapping.Invalid and ob ~= ARDOUR.ChanMapping.Invalid then - bufs:get_midi (ob):silence (n_samples, offset) - end - end - --]] -end |