diff options
Diffstat (limited to 'libs/ardour/tempo.cc')
| -rw-r--r-- | libs/ardour/tempo.cc | 58 |
1 files changed, 41 insertions, 17 deletions
diff --git a/libs/ardour/tempo.cc b/libs/ardour/tempo.cc index 469bbac4de..d690896c15 100644 --- a/libs/ardour/tempo.cc +++ b/libs/ardour/tempo.cc @@ -3676,13 +3676,13 @@ TempoMap::bbt_duration_at (framepos_t pos, const BBT_Time& bbt, int dir) return 0; } -framepos_t +MusicFrame TempoMap::round_to_bar (framepos_t fr, RoundMode dir) { return round_to_type (fr, dir, Bar); } -framepos_t +MusicFrame TempoMap::round_to_beat (framepos_t fr, RoundMode dir) { return round_to_type (fr, dir, Beat); @@ -3784,7 +3784,7 @@ TempoMap::round_to_beat_subdivision (framepos_t fr, int sub_num, RoundMode dir) return ret_frame; } -framepos_t +MusicFrame TempoMap::round_to_quarter_note_subdivision (framepos_t fr, int sub_num, RoundMode dir) { Glib::Threads::RWLock::ReaderLock lm (lock); @@ -3865,7 +3865,7 @@ TempoMap::round_to_quarter_note_subdivision (framepos_t fr, int sub_num, RoundMo if (rem > ticks) { if (beats == 0) { /* can't go backwards past zero, so ... */ - return 0; + return MusicFrame (0, 0); } /* step back to previous beat */ --beats; @@ -3880,35 +3880,46 @@ TempoMap::round_to_quarter_note_subdivision (framepos_t fr, int sub_num, RoundMo } } - const framepos_t ret_frame = frame_at_minute (minute_at_pulse_locked (_metrics, (beats + (ticks / BBT_Time::ticks_per_beat)) / 4.0)); + MusicFrame ret (0, 0); + ret.frame = frame_at_minute (minute_at_pulse_locked (_metrics, (beats + (ticks / BBT_Time::ticks_per_beat)) / 4.0)); + ret.division = sub_num; - return ret_frame; + return ret; } -framepos_t +MusicFrame TempoMap::round_to_type (framepos_t frame, RoundMode dir, BBTPointType type) { Glib::Threads::RWLock::ReaderLock lm (lock); - - const double beat_at_framepos = max (0.0, beat_at_minute_locked (_metrics, minute_at_frame (frame))); + const double minute = minute_at_frame (frame); + const double beat_at_framepos = max (0.0, beat_at_minute_locked (_metrics, minute)); BBT_Time bbt (bbt_at_beat_locked (_metrics, beat_at_framepos)); + MusicFrame ret (0, 0); switch (type) { case Bar: + ret.division = -1; + if (dir < 0) { /* find bar previous to 'frame' */ if (bbt.bars > 0) --bbt.bars; bbt.beats = 1; bbt.ticks = 0; - return frame_at_minute (minute_at_bbt_locked (_metrics, bbt)); + + ret.frame = frame_at_minute (minute_at_bbt_locked (_metrics, bbt)); + + return ret; } else if (dir > 0) { /* find bar following 'frame' */ ++bbt.bars; bbt.beats = 1; bbt.ticks = 0; - return frame_at_minute (minute_at_bbt_locked (_metrics, bbt)); + + ret.frame = frame_at_minute (minute_at_bbt_locked (_metrics, bbt)); + + return ret; } else { /* true rounding: find nearest bar */ framepos_t raw_ft = frame_at_minute (minute_at_bbt_locked (_metrics, bbt)); @@ -3919,26 +3930,39 @@ TempoMap::round_to_type (framepos_t frame, RoundMode dir, BBTPointType type) framepos_t next_ft = frame_at_minute (minute_at_bbt_locked (_metrics, bbt)); if ((raw_ft - prev_ft) > (next_ft - prev_ft) / 2) { - return next_ft; + ret.frame = next_ft; + + return ret; } else { - return prev_ft; + --bbt.bars; + ret.frame = prev_ft; + + return ret; } } break; case Beat: + ret.division = 1; + if (dir < 0) { - return frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos))); + ret.frame = frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos))); + + return ret; } else if (dir > 0) { - return frame_at_minute (minute_at_beat_locked (_metrics, ceil (beat_at_framepos))); + ret.frame = frame_at_minute (minute_at_beat_locked (_metrics, ceil (beat_at_framepos))); + + return ret; } else { - return frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos + 0.5))); + ret.frame = frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos + 0.5))); + + return ret; } break; } - return 0; + return MusicFrame (0, 0); } void |