3 # vidi-timeline - 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/>.
25 # TODO: turn these into command line options
26 ADD_REST_BACKGROUND = True
30 TITLE_CREDITS = "Created with vidi-timeline\nhttps://git.ao2.it/vidi-player.git"
33 def timeline_from_midi(midi_file, video_font_path):
34 timeline = vidi.Timeline()
39 title = os.path.splitext(os.path.basename(midi_file.filename))[0]
41 title += TITLE_CREDITS
43 timeline.add_title_clip(title, 0, TITLE_DURATION)
45 elapsed_time = start_time = TITLE_DURATION
47 elapsed_time = start_time = 0
50 elapsed_time += msg.time
51 if vidi.is_note_on(msg) and msg.channel == 0:
52 start_time = elapsed_time
53 elif vidi.is_note_off(msg) and msg.channel == 0:
54 note = vidi.MidiNote(msg.note)
55 duration = elapsed_time - start_time
56 print("Note name: %3s start_time: %f duration: %f" %
57 (note.name, start_time, duration))
59 video_sample_path = "%s/sample_%s.webm" % (video_font_path, note.name)
61 timeline.add_clip(video_sample_path, start_time, duration)
63 if ADD_REST_BACKGROUND:
64 rest_sample_path = "%s/sample_rest.png" % video_font_path
65 timeline.add_layer_clip(rest_sample_path, 0, elapsed_time)
71 print("usage: %s <midi_file> <videofont_directory> [<destination_file>]"
72 % os.path.basename(sys.argv[0]))
76 if len(sys.argv) > 1 and sys.argv[1] in ["-h", "--help"]:
84 if not os.path.isdir(sys.argv[2]):
85 sys.stderr.write("The second argument must be the path of the videofont directory\n")
89 if len(sys.argv) > 3 and os.path.exists(sys.argv[3]):
90 sys.stderr.write("File '%s' exists, exiting!\n" % sys.argv[3])
93 midi_file = mido.MidiFile(sys.argv[1])
95 overlapping_notes = vidi.check_overlapping_notes(midi_file)
97 sys.stderr.write("Sorry, supporting only midi file with no overlapping notes on channel 0\n")
100 video_font_path = os.path.realpath(sys.argv[2])
102 timeline = timeline_from_midi(midi_file, video_font_path)
104 if len(sys.argv) > 3:
105 timeline.save(sys.argv[3])
109 except KeyboardInterrupt:
114 if __name__ == "__main__":