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Lua bindings for TempoMap::get_grid

This commit is contained in:
Robin Gareus 2023-07-11 23:01:09 +02:00
parent fd6d88583f
commit 72522dd05d
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
2 changed files with 34 additions and 0 deletions
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21
libs/ardour/luabindings.cc
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@ -794,6 +794,24 @@ LuaBindings::common (lua_State* L)
.addCast<Temporal::Point> ("to_point")
.endClass ()
.beginClass <Temporal::TempoMetric> ("TempoMetric")
.addFunction ("tempo", &Temporal::TempoMetric::tempo)
.addFunction ("meter", &Temporal::TempoMetric::meter)
.addFunction ("sample_at", &Temporal::TempoMetric::sample_at)
.addFunction ("quarters_at", &Temporal::TempoMetric::quarters_at)
.addFunction ("note_type", &Temporal::TempoMetric::note_type)
.addFunction ("note_value", &Temporal::TempoMetric::note_value)
.addFunction ("divisions_per_bar", &Temporal::TempoMetric::divisions_per_bar)
.endClass ()
.deriveClass <Temporal::TempoMapPoint, Temporal::Point> ("TempoMapPoint")
.addCast<Temporal::TempoMetric> ("to_tempometric")
.addFunction ("time", &Temporal::TempoMapPoint::time)
.endClass ()
.beginStdList <Temporal::TempoMapPoint> ("TempoMapPoints")
.endClass ()
.beginWSPtrClass <Temporal::TempoMap> ("TempoMap")
/* we cannot use ::fetch or ::use because LuaBridge cannot overload
* shared_ptr<const T> and shared_ptr<T> in the same class.
@ -841,6 +859,9 @@ LuaBindings::common (lua_State* L)
.addFunction ("convert_duration", &Temporal::TempoMap::convert_duration)
.addFunction ("bbt_walk", &Temporal::TempoMap::bbt_walk)
.addFunction ("count_bars", &Temporal::TempoMap::count_bars)
#ifdef WITH_SUPERCLOCK_BINDINGS
.addRefFunction ("get_grid", &Temporal::TempoMap::get_grid)
#endif
.addFunction ("quarters_per_minute_at", &Temporal::TempoMap::quarters_per_minute_at)
.addFunction ("round_to_bar", &Temporal::TempoMap::round_to_bar)

13
share/scripts/s_tempo_map.lua
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@ -27,4 +27,17 @@ function factory () return function ()
Temporal.TempoMap.write_copy()
Temporal.TempoMap.abort_update()
-- get grid -- currently only available in debug-builds
-- Temporal.superclock_ticks_per_second = 282240000
tm = Temporal.TempoMap.read ()
local grid = tm:get_grid (Temporal.TempoMapPoints(), 0, Temporal.superclock_ticks_per_second (), 0, 1)
for t in grid[1]:iter () do
-- each t is-a TempoMapPoint
local metric = t:to_tempometric ()
local tempo_point = metric:tempo ()
local meter_point = metric:meter()
print (t:time(), tempo_point:to_tempo():quarter_notes_per_minute(), meter_point:note_value())
end
tm = nil
end end