Robin Gareus
cd53301d06
Files that have many tracks, each with tempo information
were near impossible to load (30+ mins on modern 4.2Ghz CPU!),
because tempo is parsed incrementally:
```
For each new track:
for each new tempo-event:
rewind()
for each loaded track so far:
for each event on this track so far
```
This reduces the complexity from O(tracks^2 * tempos^2)
to O(tracks * tempos).
"Come Thou Fount Tempo Map.mid" has 238 Tracks and 56168 total
Tempo Changes (236 per track). This now requires only 56168 iterations
in smf_create_tempo_map_and_compute_seconds, rather than 1.64e+9
iterations
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|---|---|---|
| .. | ||
| COPYING | ||
| README | ||
| smf_decode.c | ||
| smf_load.c | ||
| smf_private.h | ||
| smf_save.c | ||
| smf_tempo.c | ||
| smf.c | ||
| smf.h | ||
| smfsh.c | ||
This is a stripped down version of libsmf 1.2 by Edward Tomasz Napiera for internal use by Evoral. See COPYING for licensing information. The complete version can be found at <http://libsmf.sf.net>.