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Proper error messages for Audio2MIDI script

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Robin Gareus 2019-09-02 21:20:26 +02:00
parent 215bc64455
commit ab68ed4131
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1 changed files with 11 additions and 2 deletions
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13
scripts/vamp_audio_to_midi.lua
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@ -18,7 +18,7 @@ function factory () return function ()
local sr = Session:nominal_sample_rate () local sr = Session:nominal_sample_rate ()
local tm = Session:tempo_map () local tm = Session:tempo_map ()
local vamp = ARDOUR.LuaAPI.Vamp ("libardourvampplugins:qm-transcription", sr) local vamp = ARDOUR.LuaAPI.Vamp ("libardourvampplugins:qm-transcription", sr)
local midi_region local midi_region = nil
local audio_regions = {} local audio_regions = {}
local start_time = Session:current_end_sample () local start_time = Session:current_end_sample ()
local end_time = Session:current_start_sample () local end_time = Session:current_start_sample ()
@ -41,7 +41,16 @@ function factory () return function ()
midi_region = r:to_midiregion() midi_region = r:to_midiregion()
end end
end end
assert (audio_regions and midi_region)
if #audio_regions == 0 then
LuaDialog.Message ("Polyphonic Audio to MIDI", "No source audio region(s) selected.\nAt least one audio-region to be analyzed need to be selected.", LuaDialog.MessageType.Error, LuaDialog.ButtonType.Close):run ()
return
end
if not midi_region then
LuaDialog.Message ("Polyphonic Audio to MIDI", "No target MIDI region selected.\nA MIDI region, ideally empty, and extending beyond the selected audio-region(s) needs to be selected.", LuaDialog.MessageType.Error, LuaDialog.ButtonType.Close):run ()
return
end
midi_region:set_initial_position(start_time) midi_region:set_initial_position(start_time)
midi_region:set_length(end_time - start_time, 0) midi_region:set_length(end_time - start_time, 0)