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authorRobin Gareus <robin@gareus.org>2016-08-10 03:12:11 +0200
committerRobin Gareus <robin@gareus.org>2016-08-10 03:12:11 +0200
commita8143ea44e83a87fb6a9500d59409a14a94ad655 (patch)
tree3aac8610dc26fb63abd4cc1c7afe864714a2f408 /scripts/rawmidi.lua
parent2b7a89ecffa92a616cd61774d42bea1e99db6f79 (diff)
prefix no-inst script with an underscore and skip install
Diffstat (limited to 'scripts/rawmidi.lua')
-rw-r--r--scripts/rawmidi.lua111
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