fix default output map display for no plugin processors

[ardour.git] / scripts / _vamp_audio_to_midi.lua

diff --git a/scripts/_vamp_audio_to_midi.lua b/scripts/_vamp_audio_to_midi.lua
index e74aac59ebac4118ca5685057ccd9fb4fc2676bc..f2395eb40cd6db9bca8628724a672d00d19d5952 100644 (file)
--- a/scripts/_vamp_audio_to_midi.lua
+++ b/scripts/_vamp_audio_to_midi.lua
@@ -6,37 +6,53 @@ function factory () return function ()
        local sr = Session:nominal_frame_rate ()
        local tm = Session:tempo_map ()
        local vamp = ARDOUR.LuaAPI.Vamp ("libardourvampplugins:qm-transcription", sr)
-       local ar, mr
+       local midi_region
+       local audio_regions = {}
+       local start_time = Session:current_end_frame ()
+       local end_time = Session:current_start_frame ()
        for r in sel.regions:regionlist ():iter () do
                if r:to_midiregion():isnil() then
-                       ar = r
+                       local st = r:position()
+                       local ln = r:length()
+                       local et = st + ln
+                       if st < start_time then
+                               start_time = st
+                       end
+                       if et > end_time then
+                               end_time = et
+                       end
+                       table.insert(audio_regions, r) 
                else
-                       mr = r:to_midiregion()
+                       midi_region = r:to_midiregion()
                end
        end
-       assert (ar and mr)
-       assert (mr:position () >= mr:start ())
+       assert (audio_regions and midi_region)
+       midi_region:set_initial_position(start_time)
+       midi_region:set_length(end_time - start_time, 0)
 
-       local a_off = ar:position ()
-       local m_off = tm:exact_beat_at_frame (mr:position () - mr:start (), 0)
+       for i,ar in pairs(audio_regions) do
+               local a_off = ar:position ()
+               local b_off = midi_region:quarter_note () - midi_region:start_beats ()
 
-       vamp:analyze (ar:to_readable (), 0, nil)
-       local fl = vamp:plugin ():getRemainingFeatures ():at (0)
-       if fl and fl:size() > 0 then
-               local mm = mr:midi_source(0):model()
-               local midi_command = mm:new_note_diff_command ("Audio2Midi")
-               for f in fl:iter () do
-                       local ft = Vamp.RealTime.realTime2Frame (f.timestamp, sr)
-                       local fd = Vamp.RealTime.realTime2Frame (f.duration, sr)
-                       local fn = f.values:at (0)
-                       local bs = tm:exact_beat_at_frame (a_off + ft, 0)
-                       local be = tm:exact_beat_at_frame (a_off + ft + fd, 0)
+               vamp:analyze (ar:to_readable (), 0, nil)
+               local fl = vamp:plugin ():getRemainingFeatures ():at (0)
+               if fl and fl:size() > 0 then
+                       local mm = midi_region:midi_source(0):model()
+                       local midi_command = mm:new_note_diff_command ("Audio2Midi")
+                       for f in fl:iter () do
+                               local ft = Vamp.RealTime.realTime2Frame (f.timestamp, sr)
+                               local fd = Vamp.RealTime.realTime2Frame (f.duration, sr)
+                               local fn = f.values:at (0)
 
-                       local pos = Evoral.Beats (bs - m_off)
-                       local len = Evoral.Beats (be - bs)
-                       local note = ARDOUR.LuaAPI.new_noteptr (1, pos, len, fn + 1, 0x7f)
-                       midi_command:add (note)
+                               local bs = tm:exact_qn_at_frame (a_off + ft, 0)
+                               local be = tm:exact_qn_at_frame (a_off + ft + fd, 0)
+
+                               local pos = Evoral.Beats (bs - b_off)
+                               local len = Evoral.Beats (be - bs)
+                               local note = ARDOUR.LuaAPI.new_noteptr (1, pos, len, fn + 1, 0x7f)
+                               midi_command:add (note)
+                       end
+                       mm:apply_command (Session, midi_command)
                end
-               mm:apply_command (Session, midi_command)
        end
 end end