fq/format/midi/testdata/help_midi.fqtest

$ fq -h midi
midi: Standard MIDI file decoder

Decode examples
===============

  # Decode file as midi
  $ fq -d midi . file
  # Decode value as midi
  ... | midi

Notes
=====
* Only supports the MIDI 1.0 specification.
* Does only basic validation on the MIDI data.

Sample queries
==============
* Extract the track names from a MIDI file

  fq -d midi -d midi '.. | select(.event=="track_name")? | "\(.track_name)"' midi/twinkle.mid 

* Extract the tempo changes from a MIDI file

  fq -d midi '.. | select(.event=="tempo")?.tempo' midi/twinkle.mid

* Extract the key changes from a MIDI file

  fq -d midi '.. | select(.event=="key_signature")?.key_signature' midi/key-signatures.mid

* Extract NoteOn events:

  fq -d midi 'grep_by(.event=="note_on") | [.time.tick, .note_on.note] | join(" ")' midi/twinkle.mid

Authors
=======
- transcriptaze.development@gmail.com

References
==========
* The Complete MIDI 1.0 Detailed Specification (https://www.midi.org/specifications/item/the-midi-1-0-specification)
* The MIDI Specification (http://midi.teragonaudio.com/tech/midispec.htm)