Importing MIDI files with most metadata

#1

While working on a lua script to automate some actions from MIDI metadata, I just realize that most of the metadata are just thrown away in libs/evoral/SMF.cc SMF::load_markers(), so it will never work. :grimacing:
Could I add a new button on the “Add Existing Media” form along “Use MIDI Tempo Map” and “Import MIDI markers” and implement the storage of all the missing event types? Storage is cheap nowadays… :slight_smile:
This is somewhat related to Importing markers - #7
To give some context on my use case, I use a lot the abc format along abc2midi https://github.com/sshlien/abcmidi to manage my band repertoire and would like to keep most of the information with this mapping:

  Meta events generated by abc2midi

  Meta type: 0x01 Text
  What writes it: Track-type annotation at track start
  ABC source: Internal: "note track", "lyric track", "gchord track", "drum track",
    "drone track", "notes/lyric track"
  ────────────────────────────────────────
  Meta type: 0x01 Text
  What writes it: %%MIDI text directives or !text! annotations
  ABC source: %%MIDI text, %%MIDI annotation
  ────────────────────────────────────────
  Meta type: 0x01 Text
  What writes it: Lyrics syllables
  ABC source: w: lines — note: abc2midi uses 0x01 here, not the proper 0x05 Lyric event
  ────────────────────────────────────────
  Meta type: 0x02 Copyright
  What writes it: Copyright field
  ABC source: C: field
  ────────────────────────────────────────
  Meta type: 0x03 Sequence/Track Name
  What writes it: Song title — track 0 and track 1; Karaoke track 2 gets "Words"
  ABC source: T: field
  ────────────────────────────────────────
  Meta type: 0x06 Marker
  What writes it: Part marker — but stored as a single raw byte with the ASCII value
    of the part letter, not as a string
  ABC source: P: field
  ────────────────────────────────────────
  Meta type: 0x51 Set Tempo
  What writes it: Initial tempo and all tempo changes
  ABC source: Q: field
  ────────────────────────────────────────
  Meta type: 0x58 Time Signature
  What writes it: Meter
  ABC source: M: field
  ────────────────────────────────────────
  Meta type: 0x59 Key Signature
  What writes it: Key
  ABC source: K: field

Thanks!

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