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clean up/improve API used in 5ebf8152e

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This commit is contained in:
Paul Davis 2025-01-10 09:25:03 -07:00
parent ca9f41c4b2
commit 99ba22a4a4
2 changed files with 16 additions and 4 deletions
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17
libs/temporal/tempo.cc
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@ -346,6 +346,12 @@ Meter::bbt_subtract (Temporal::BBT_Time const & bbt, Temporal::BBT_Offset const
return Temporal::BBT_Time (r.bars, r.beats, r.ticks);
}
Temporal::Beats
Meter::round_to_beat (Temporal::Beats const & b) const
{
return b.round_to_multiple (Beats::ticks (ticks_per_grid()));
}
Temporal::BBT_Time
Meter::round_to_bar (Temporal::BBT_Time const & bbt) const
{
@ -1353,12 +1359,15 @@ TempoMap::set_tempo (Tempo const & t, timepos_t const & time)
/* tempo changes are required to be on-beat */
TempoMetric metric (metric_at (time.beats(), false));
Beats on_beat = time.beats().round_to_multiple (Beats::ticks (metric.meter().ticks_per_grid()));
Beats on_beat = metric_at (time.beats(), false).round_to_beat (time.beats());
superclock_t sc;
BBT_Time bbt;
metric = metric_at (on_beat, false);
/* the metric for the on-beat position may be different than
* the one for the raw time, so look it up again.
*/
TempoMetric metric (metric_at (on_beat, false));
bbt = metric.bbt_at (on_beat);
sc = metric.superclock_at (on_beat);
@ -1376,7 +1385,7 @@ TempoMap::set_tempo (Tempo const & t, timepos_t const & time)
/* tempo changes must be on beat */
beats = tm.quarters_at_superclock (sc).round_to_multiple (Beats::ticks (tm.meter().ticks_per_grid()));
beats = tm.round_to_beat (tm.quarters_at_superclock (sc));
bbt = tm.bbt_at (beats);
/* recompute superclock position of rounded beat */

3
libs/temporal/temporal/tempo.h
View file

@ -310,6 +310,8 @@ class LIBTEMPORAL_API Meter {
BBT_Time round_to_beat (BBT_Time const &) const;
Beats to_quarters (BBT_Offset const &) const;
Beats round_to_beat (Beats const &) const;
XMLNode& get_state () const;
int set_state (XMLNode const&, int version);
@ -472,6 +474,7 @@ class LIBTEMPORAL_API TempoMetric
BBT_Argument bbt_subtract (BBT_Time const & bbt, BBT_Offset const & sub) const { return BBT_Argument (reftime(), _meter->bbt_subtract (bbt, sub)); }
BBT_Argument round_to_bar (BBT_Time const & bbt) const { return BBT_Argument (reftime(), _meter->round_to_bar (bbt)); }
Beats to_quarters (BBT_Offset const & bbo) const { return _meter->to_quarters (bbo); }
Beats round_to_beat (Beats const & b) const { return _meter->round_to_beat (b); }
/* combination methods that require both tempo and meter information */