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Commit Graph

5 Commits

Author SHA1 Message Date
c45be2266e support SMF markers without labels 2021-05-09 17:52:29 -06:00
f689e9ecab Evoral: add methods to SMF to load and access markers/cues in SMF files 2021-05-07 14:58:16 -06:00
c6b87972b1
Remove unused libsmf seconds/time API
This significantly speeds up parsing MIDI files with complex
tempo-maps. e.g. "Black MIDI Trilogy_2.mid" has 24134 Tempo
changes. Prior to this commit parsing that file took over 5 minutes.
now it loads in under one seconds (libsmf only; libardour still
add overhead, and now needs about 30-40 seconds, previously
it took about 10 mins).

The problem was that every call to `smf_track_add_event_pulses()`
calls `seconds_from_pulses()` which calls `smf_get_tempo_by_seconds()`
which iterates over the tempo-map:

  for every midi-event { for ever tempo until that midi-event {..} }

This does not scale to 3.5M events and 24k tempo-changes.
2020-07-16 18:38:03 +02:00
44bca6cc8f
Fix memory leak when reading MIDI files 2020-05-22 01:29:25 +02:00
eaae38ba84 move evoral/src/* to evoral/ 2019-11-02 16:32:18 -06:00