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First round of Lua script API updates

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This commit is contained in:
Robin Gareus
2022-09-27 05:06:13 +02:00
parent 395bf4a650
commit 30a92894fc
8 changed files with 34 additions and 31 deletions
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13
share/scripts/s_tempo_map.lua
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@@ -3,14 +3,15 @@ ardour { ["type"] = "Snippet", name = "tempo map examples" }
function factory () return function ()
-- query BPM at 00:00:10:00
local tp = Temporal.timepos_t.from_superclock (Temporal.superclock_ticks_per_second () * Session:nominal_sample_rate () * 10)
local tm = Temporal.TempoMap.use ()
print (tm:tempo_at (tp):quarter_notes_per_minute ())
local tp = Temporal.timepos_t (Session:nominal_sample_rate () * 10)
local tm = Temporal.TempoMap.read ()
print (tm:quarters_per_minute_at (tp))
tm = nil
-- set initial tempo to 140, ramp to 120 over the first 4/4 bar, then continue at BPM 80
Temporal.TempoMap.fetch_writable ()
local tm = Temporal.TempoMap.use ()
tm:set_tempo (Temporal.Tempo (140, 120, 4), Temporal.timepos_t ())
local tm = Temporal.TempoMap.fetch_writable ()
tm:set_tempo (Temporal.Tempo (140, 120, 4), Temporal.timepos_t (0))
tm:set_tempo (Temporal.Tempo (120, 80, 4), Temporal.timepos_t.from_ticks (Temporal.ticks_per_beat * 4))
tm:set_tempo (Temporal.Tempo (80, 80, 4), Temporal.timepos_t.from_ticks (Temporal.ticks_per_beat * 4))
Temporal.TempoMap.update (tm)
tm = nil