3 # vidi-player - generate GStreamer Editing Services timelines from midi
5 # Copyright (C) 2016 Antonio Ospite <ao2@ao2.it>
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation, either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
27 return msg.type == 'note_on' or msg.type == 'note_off'
31 return msg.type == 'note_on' and msg.velocity > 0
35 return ((msg.type == 'note_on' and msg.velocity == 0) or
36 (msg.type == 'note_off'))
39 def check_overlapping_notes(midi_file):
40 previous_note_on = False
42 if is_note_on(msg) and msg.channel == 0:
46 previous_note_on = True
47 elif is_note_off(msg) and msg.channel == 0:
48 previous_note_on = False
53 def timeline_from_midi(midi_file, video_font_path):
54 timeline = vidi.Timeline()
59 elapsed_time += msg.time
60 if is_note_on(msg) and msg.channel == 0:
61 start_time = elapsed_time
62 elif is_note_off(msg) and msg.channel == 0:
63 note = vidi.MidiNote(msg.note)
64 duration = elapsed_time - start_time
65 print("Note name: %s start_time: %f duration: %f" %
66 (note.name, start_time, duration))
68 video_sample_path = "%s/sample_%s.mkv" % (video_font_path, note.name)
70 timeline.add_clip(video_sample_path, start_time, duration)
76 print("usage: %s <midi_file> <videofont_directory> [<destination_file>]"
77 % os.path.basename(sys.argv[0]))
81 if len(sys.argv) > 1 and sys.argv[1] in ["-h", "--help"]:
89 midi_file = mido.MidiFile(sys.argv[1])
91 overlapping_notes = check_overlapping_notes(midi_file)
93 sys.stderr.write("Sorry, supporting only midi file with no overlapping notes on channel 0\n")
96 if not os.path.isdir(sys.argv[2]):
97 sys.stderr.write("The second argument must be the path of the videofont directory\n")
101 video_font_path = os.path.realpath(sys.argv[2])
103 timeline = timeline_from_midi(midi_file, video_font_path)
105 if len(sys.argv) > 3:
106 timeline.save(sys.argv[3])
110 except KeyboardInterrupt:
115 if __name__ == "__main__":