diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2010-12-14 20:28:37 +0000 |
---|---|---|
committer | Paul Davis <paul@linuxaudiosystems.com> | 2010-12-14 20:28:37 +0000 |
commit | f09524b9d30115e51294edc3af4399194f8478f1 (patch) | |
tree | 7c3bb83e413f790fac39b0d7c9a7e31ae279d5d2 | |
parent | ee5a37a306babadc81ac4a2612b260dc612a381a (diff) |
move ticks per beat from Meter to Timecode::BBT_Time, add new constructor for BBT_Time based on a double value; reduce BeatFramesConverted to 1 liners pending likely removal
git-svn-id: svn://localhost/ardour2/branches/3.0@8277 d708f5d6-7413-0410-9779-e7cbd77b26cf
-rw-r--r-- | gtk2_ardour/editor_mouse.cc | 2 | ||||
-rw-r--r-- | gtk2_ardour/editor_rulers.cc | 14 | ||||
-rw-r--r-- | gtk2_ardour/midi_list_editor.cc | 2 | ||||
-rw-r--r-- | gtk2_ardour/step_editor.cc | 6 | ||||
-rw-r--r-- | libs/ardour/ardour/tempo.h | 2 | ||||
-rw-r--r-- | libs/ardour/audio_unit.cc | 8 | ||||
-rw-r--r-- | libs/ardour/beats_frames_converter.cc | 8 | ||||
-rw-r--r-- | libs/ardour/session_time.cc | 2 | ||||
-rw-r--r-- | libs/ardour/tempo.cc | 50 | ||||
-rw-r--r-- | libs/surfaces/mackie/mackie_control_protocol.cc | 4 | ||||
-rw-r--r-- | libs/timecode/src/bbt_time.cc | 37 | ||||
-rw-r--r-- | libs/timecode/timecode/bbt_time.h | 4 | ||||
-rw-r--r-- | libs/timecode/wscript | 2 |
13 files changed, 86 insertions, 55 deletions
diff --git a/gtk2_ardour/editor_mouse.cc b/gtk2_ardour/editor_mouse.cc index a857ca4cec..7f995ca6ee 100644 --- a/gtk2_ardour/editor_mouse.cc +++ b/gtk2_ardour/editor_mouse.cc @@ -2247,7 +2247,7 @@ Editor::show_verbose_duration_cursor (framepos_t start, framepos_t end, double o ebbt.ticks -= sbbt.ticks; } else { ebbt.beats--; - ebbt.ticks = int(Meter::ticks_per_beat) + ebbt.ticks - sbbt.ticks; + ebbt.ticks = int(Timecode::BBT_Time::ticks_per_beat) + ebbt.ticks - sbbt.ticks; } snprintf (buf, sizeof (buf), "%02" PRIu32 "|%02" PRIu32 "|%02" PRIu32, ebbt.bars, ebbt.beats, ebbt.ticks); diff --git a/gtk2_ardour/editor_rulers.cc b/gtk2_ardour/editor_rulers.cc index db9058e57d..e6ba876c11 100644 --- a/gtk2_ardour/editor_rulers.cc +++ b/gtk2_ardour/editor_rulers.cc @@ -1260,7 +1260,7 @@ Editor::compute_bbt_ruler_scale (framepos_t lower, framepos_t upper) bbt_ruler_scale = bbt_show_ticks_detail; } - if ((bbt_ruler_scale == bbt_show_ticks_detail) && (lower_beat.beats == upper_beat.beats) && (upper_beat.ticks - lower_beat.ticks <= Meter::ticks_per_beat / 4)) { + if ((bbt_ruler_scale == bbt_show_ticks_detail) && (lower_beat.beats == upper_beat.beats) && (upper_beat.ticks - lower_beat.ticks <= Timecode::BBT_Time::ticks_per_beat / 4)) { bbt_ruler_scale = bbt_show_ticks_super_detail; } } @@ -1389,14 +1389,14 @@ Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upp frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() * 60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute())); frame_skip_error -= frame_skip; - skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision); + skip = (uint32_t) (Timecode::BBT_Time::ticks_per_beat / bbt_beat_subdivision); pos = (*i).frame + frame_skip; accumulated_error = frame_skip_error; tick = skip; - for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) { + for (t = 0; (tick < Timecode::BBT_Time::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) { if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) { i_am_accented = true; @@ -1481,14 +1481,14 @@ Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upp frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() * 60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute())); frame_skip_error -= frame_skip; - skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision); + skip = (uint32_t) (Timecode::BBT_Time::ticks_per_beat / bbt_beat_subdivision); pos = (*i).frame + frame_skip; accumulated_error = frame_skip_error; tick = skip; - for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) { + for (t = 0; (tick < Timecode::BBT_Time::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) { if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) { i_am_accented = true; @@ -1578,14 +1578,14 @@ Editor::metric_get_bbt (GtkCustomRulerMark **marks, gdouble lower, gdouble /*upp frame_skip = (framepos_t) floor (frame_skip_error = (_session->frame_rate() * 60) / (bbt_beat_subdivision * (*i).tempo->beats_per_minute())); frame_skip_error -= frame_skip; - skip = (uint32_t) (Meter::ticks_per_beat / bbt_beat_subdivision); + skip = (uint32_t) (Timecode::BBT_Time::ticks_per_beat / bbt_beat_subdivision); pos = (*i).frame + frame_skip; accumulated_error = frame_skip_error; tick = skip; - for (t = 0; (tick < Meter::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) { + for (t = 0; (tick < Timecode::BBT_Time::ticks_per_beat) && (n < bbt_nmarks) && (pos < next_beat_pos) ; pos += frame_skip, tick += skip, ++t) { if (t % bbt_accent_modulo == (bbt_accent_modulo - 1)) { i_am_accented = true; diff --git a/gtk2_ardour/midi_list_editor.cc b/gtk2_ardour/midi_list_editor.cc index da04c3dc94..de1331674e 100644 --- a/gtk2_ardour/midi_list_editor.cc +++ b/gtk2_ardour/midi_list_editor.cc @@ -212,7 +212,7 @@ MidiListEditor::redisplay_model () bbt.bars = 0; dur = (*i)->end_time() - (*i)->time(); bbt.beats = floor (dur); - bbt.ticks = (uint32_t) lrint (fmod (dur, 1.0) * Meter::ticks_per_beat); + bbt.ticks = (uint32_t) lrint (fmod (dur, 1.0) * Timecode::BBT_Time::ticks_per_beat); _session->tempo_map().bbt_duration_at (region->position(), bbt, 0); diff --git a/gtk2_ardour/step_editor.cc b/gtk2_ardour/step_editor.cc index c4d62def90..079644eabc 100644 --- a/gtk2_ardour/step_editor.cc +++ b/gtk2_ardour/step_editor.cc @@ -273,8 +273,8 @@ StepEditor::step_add_note (uint8_t channel, uint8_t pitch, uint8_t velocity, Evo up by 1 tick from where the last note ended */ - at += 1.0/Meter::ticks_per_beat; - len -= 1.0/Meter::ticks_per_beat; + at += 1.0/Timecode::BBT_Time::ticks_per_beat; + len -= 1.0/Timecode::BBT_Time::ticks_per_beat; } step_edit_region_view->step_add_note (channel, pitch, velocity, at, len); @@ -294,7 +294,7 @@ StepEditor::step_add_note (uint8_t channel, uint8_t pitch, uint8_t velocity, Evo step_edit_beat_pos += beat_duration; step_edit_region_view->move_step_edit_cursor (step_edit_beat_pos); } else { - step_edit_beat_pos += 1.0/Meter::ticks_per_beat; // tiny, but no longer overlapping + step_edit_beat_pos += 1.0/Timecode::BBT_Time::ticks_per_beat; // tiny, but no longer overlapping _step_edit_chord_duration = max (_step_edit_chord_duration, beat_duration); } diff --git a/libs/ardour/ardour/tempo.h b/libs/ardour/ardour/tempo.h index 90d27ebed0..f4de25e711 100644 --- a/libs/ardour/ardour/tempo.h +++ b/libs/ardour/ardour/tempo.h @@ -53,8 +53,6 @@ class Tempo { class Meter { public: - static const double ticks_per_beat; - Meter (double bpb, double bt) : _beats_per_bar (bpb), _note_type (bt) {} diff --git a/libs/ardour/audio_unit.cc b/libs/ardour/audio_unit.cc index 171e303f99..2e47a0bd48 100644 --- a/libs/ardour/audio_unit.cc +++ b/libs/ardour/audio_unit.cc @@ -1339,7 +1339,7 @@ AUPlugin::get_beat_and_tempo_callback (Float64* outCurrentBeat, float beat; beat = metric.meter().beats_per_bar() * bbt.bars; beat += bbt.beats; - beat += bbt.ticks / Meter::ticks_per_beat; + beat += bbt.ticks / BBT_Time::ticks_per_beat; *outCurrentBeat = beat; } @@ -1379,7 +1379,7 @@ AUPlugin::get_musical_time_location_callback (UInt32* outDeltaSampleOffsetToNe /* on the beat */ *outDeltaSampleOffsetToNextBeat = 0; } else { - *outDeltaSampleOffsetToNextBeat = (UInt32) floor (((Meter::ticks_per_beat - bbt.ticks)/Meter::ticks_per_beat) * // fraction of a beat to next beat + *outDeltaSampleOffsetToNextBeat = (UInt32) floor (((BBT_Time::ticks_per_beat - bbt.ticks)/BBT_Time::ticks_per_beat) * // fraction of a beat to next beat metric.tempo().frames_per_beat(_session.frame_rate(), metric.meter())); // frames per beat } } @@ -1471,7 +1471,7 @@ AUPlugin::get_transport_state_callback (Boolean* outIsPlaying, float beat; beat = metric.meter().beats_per_bar() * bbt.bars; beat += bbt.beats; - beat += bbt.ticks / Meter::ticks_per_beat; + beat += bbt.ticks / BBT_Time::ticks_per_beat; *outCycleStartBeat = beat; } @@ -1483,7 +1483,7 @@ AUPlugin::get_transport_state_callback (Boolean* outIsPlaying, float beat; beat = metric.meter().beats_per_bar() * bbt.bars; beat += bbt.beats; - beat += bbt.ticks / Meter::ticks_per_beat; + beat += bbt.ticks / BBT_Time::ticks_per_beat; *outCycleEndBeat = beat; } diff --git a/libs/ardour/beats_frames_converter.cc b/libs/ardour/beats_frames_converter.cc index 4cda4173b3..c2c54eb9cd 100644 --- a/libs/ardour/beats_frames_converter.cc +++ b/libs/ardour/beats_frames_converter.cc @@ -27,13 +27,7 @@ namespace ARDOUR { framecnt_t BeatsFramesConverter::to(double beats) const { - Timecode::BBT_Time delta; - - delta.bars = 0; - delta.beats = rint (floor (beats)); - delta.ticks = rint (floor (Meter::ticks_per_beat * fmod (beats, 1.0))); - - return _tempo_map.framepos_plus_bbt (_origin_b, delta); + return _tempo_map.framepos_plus_bbt (_origin_b, Timecode::BBT_Time(beats)); } double diff --git a/libs/ardour/session_time.cc b/libs/ardour/session_time.cc index bed5bab7a6..7bd0ad1164 100644 --- a/libs/ardour/session_time.cc +++ b/libs/ardour/session_time.cc @@ -494,7 +494,7 @@ Session::jack_timebase_callback (jack_transport_state_t /*state*/, pos->beats_per_bar = metric.meter().beats_per_bar(); pos->beat_type = metric.meter().note_divisor(); - pos->ticks_per_beat = Meter::ticks_per_beat; + pos->ticks_per_beat = Timecode::BBT_Time::ticks_per_beat; pos->beats_per_minute = metric.tempo().beats_per_minute(); pos->valid = jack_position_bits_t (pos->valid | JackPositionBBT); diff --git a/libs/ardour/tempo.cc b/libs/ardour/tempo.cc index 90a428b9a0..aea3eb09f4 100644 --- a/libs/ardour/tempo.cc +++ b/libs/ardour/tempo.cc @@ -45,8 +45,6 @@ using Timecode::BBT_Time; Meter TempoMap::_default_meter (4.0, 4.0); Tempo TempoMap::_default_tempo (120.0); -const double Meter::ticks_per_beat = 1920.0; - double Tempo::frames_per_beat (framecnt_t sr, const Meter& meter) const { return ((60.0 * sr) / (_beats_per_minute * meter.note_divisor()/_note_type)); @@ -707,7 +705,7 @@ TempoMap::timestamp_metrics (bool use_bbt) first = false; } else { - if (bbt.ticks > Meter::ticks_per_beat/2) { + if (bbt.ticks > BBT_Time::ticks_per_beat/2) { /* round up to next beat */ bbt.beats += 1; } @@ -836,15 +834,15 @@ TempoMap::bbt_time_with_metric (framepos_t frame, BBT_Time& bbt, const TempoMetr // cerr << "---- BBT time for " << frame << " using metric @ " << metric.frame() << " BBT " << metric.start() << endl; const double beats_per_bar = metric.meter().beats_per_bar(); - const double ticks_per_frame = metric.tempo().frames_per_beat (_frame_rate, metric.meter()) / Meter::ticks_per_beat; + const double ticks_per_frame = metric.tempo().frames_per_beat (_frame_rate, metric.meter()) / BBT_Time::ticks_per_beat; /* now compute how far beyond that point we actually are. */ frame_diff = frame - metric.frame(); bbt.ticks = metric.start().ticks + (uint32_t)round((double)frame_diff / ticks_per_frame); - uint32_t xtra_beats = bbt.ticks / (uint32_t)Meter::ticks_per_beat; - bbt.ticks %= (uint32_t)Meter::ticks_per_beat; + uint32_t xtra_beats = bbt.ticks / (uint32_t)BBT_Time::ticks_per_beat; + bbt.ticks %= (uint32_t)BBT_Time::ticks_per_beat; bbt.beats = metric.start().beats + xtra_beats - 1; // correction for 1-based counting, see below for matching operation. bbt.bars = metric.start().bars + (uint32_t)floor((double)bbt.beats / beats_per_bar); @@ -861,7 +859,7 @@ TempoMap::bbt_time_with_metric (framepos_t frame, BBT_Time& bbt, const TempoMetr this will also behave badly in the case of meters like 0.1/4, but I can't be bothered to test that. */ - uint32_t ticks_on_last_beat = (uint32_t)floor(Meter::ticks_per_beat * beat_fraction); + uint32_t ticks_on_last_beat = (uint32_t)floor(BBT_Time::ticks_per_beat * beat_fraction); if (bbt.beats > (uint32_t)floor(beats_per_bar) && bbt.ticks >= ticks_on_last_beat) { bbt.ticks -= ticks_on_last_beat; @@ -890,7 +888,7 @@ TempoMap::count_frames_between (const BBT_Time& start, const BBT_Time& end) cons uint32_t bar_offset = start.bars - m.start().bars; double beat_offset = bar_offset*m.meter().beats_per_bar() - (m.start().beats-1) + (start.beats -1) - + start.ticks/Meter::ticks_per_beat; + + start.ticks/BBT_Time::ticks_per_beat; start_frame = m.frame() + (framepos_t) rint( beat_offset * m.tempo().frames_per_beat(_frame_rate, m.meter())); @@ -900,7 +898,7 @@ TempoMap::count_frames_between (const BBT_Time& start, const BBT_Time& end) cons bar_offset = end.bars - m.start().bars; beat_offset = bar_offset * m.meter().beats_per_bar() - (m.start().beats -1) + (end.beats - 1) - + end.ticks/Meter::ticks_per_beat; + + end.ticks/BBT_Time::ticks_per_beat; end_frame = m.frame() + (framepos_t) rint(beat_offset * m.tempo().frames_per_beat(_frame_rate, m.meter())); @@ -1028,8 +1026,8 @@ TempoMap::bbt_duration_at_unlocked (const BBT_Time& when, const BBT_Time& bbt, i */ uint32_t ticks_at_beat = (uint32_t) ( result.beats == ceil(beats_per_bar) ? - (1 - (ceil(beats_per_bar) - beats_per_bar))* Meter::ticks_per_beat - : Meter::ticks_per_beat ); + (1 - (ceil(beats_per_bar) - beats_per_bar))* BBT_Time::ticks_per_beat + : BBT_Time::ticks_per_beat ); while (result.ticks >= ticks_at_beat) { result.beats++; @@ -1041,8 +1039,8 @@ TempoMap::bbt_duration_at_unlocked (const BBT_Time& when, const BBT_Time& bbt, i beats_per_bar = metric.meter().beats_per_bar(); } ticks_at_beat= (uint32_t) ( result.beats == ceil(beats_per_bar) ? - (1 - (ceil(beats_per_bar) - beats_per_bar) ) * Meter::ticks_per_beat - : Meter::ticks_per_beat); + (1 - (ceil(beats_per_bar) - beats_per_bar) ) * BBT_Time::ticks_per_beat + : BBT_Time::ticks_per_beat); } @@ -1071,7 +1069,7 @@ TempoMap::bbt_duration_at_unlocked (const BBT_Time& when, const BBT_Time& bbt, i result.ticks = when.ticks - bbt.ticks; } else { - uint32_t ticks_at_beat= (uint32_t) Meter::ticks_per_beat; + uint32_t ticks_at_beat= (uint32_t) BBT_Time::ticks_per_beat; uint32_t t = bbt.ticks - when.ticks; do { @@ -1081,10 +1079,10 @@ TempoMap::bbt_duration_at_unlocked (const BBT_Time& when, const BBT_Time& bbt, i metric = metric_at(result); // maybe there is a meter change beats_per_bar = metric.meter().beats_per_bar(); result.beats = (uint32_t) ceil(beats_per_bar); - ticks_at_beat = (uint32_t) ((1 - (ceil(beats_per_bar) - beats_per_bar)) * Meter::ticks_per_beat) ; + ticks_at_beat = (uint32_t) ((1 - (ceil(beats_per_bar) - beats_per_bar)) * BBT_Time::ticks_per_beat) ; } else { result.beats --; - ticks_at_beat = (uint32_t) Meter::ticks_per_beat; + ticks_at_beat = (uint32_t) BBT_Time::ticks_per_beat; } if (t <= ticks_at_beat) { @@ -1139,7 +1137,7 @@ TempoMap::round_to_beat_subdivision (framepos_t fr, int sub_num, int dir) bbt_time(fr, the_beat); - ticks_one_subdivisions_worth = (uint32_t)Meter::ticks_per_beat / sub_num; + ticks_one_subdivisions_worth = (uint32_t)BBT_Time::ticks_per_beat / sub_num; ticks_one_half_subdivisions_worth = ticks_one_subdivisions_worth / 2; if (dir > 0) { @@ -1247,7 +1245,7 @@ TempoMap::round_to_type (framepos_t frame, int dir, BBTPointType type) float midbar_ticks; midbar_beats = metric.meter().beats_per_bar() / 2 + 1; - midbar_ticks = Meter::ticks_per_beat * fmod (midbar_beats, 1.0f); + midbar_ticks = BBT_Time::ticks_per_beat * fmod (midbar_beats, 1.0f); midbar_beats = floor (midbar_beats); BBT_Time midbar (bbt.bars, lrintf (midbar_beats), lrintf (midbar_ticks)); @@ -1300,7 +1298,7 @@ TempoMap::round_to_type (framepos_t frame, int dir, BBTPointType type) /* "true" rounding */ /* round to nearest beat */ - if (bbt.ticks >= (Meter::ticks_per_beat/2)) { + if (bbt.ticks >= (BBT_Time::ticks_per_beat/2)) { try { bbt = bbt_add (bbt, one_beat, metric); @@ -1702,9 +1700,9 @@ TempoMap::bbt_add (const BBT_Time& start, const BBT_Time& increment, const Tempo BBT_Time op = increment; /* argument is const, but we need to modify it */ uint32_t ticks = result.ticks + op.ticks; - if (ticks >= Meter::ticks_per_beat) { + if (ticks >= BBT_Time::ticks_per_beat) { op.beats++; - result.ticks = ticks % (uint32_t) Meter::ticks_per_beat; + result.ticks = ticks % (uint32_t) BBT_Time::ticks_per_beat; } else { result.ticks += op.ticks; } @@ -1805,7 +1803,7 @@ TempoMap::bbt_subtract (const BBT_Time& start, const BBT_Time& decrement) const if (op.ticks > result.ticks) { /* subtract an extra beat later; meanwhile set ticks to the right "carry" value */ op.beats++; - result.ticks = Meter::ticks_per_beat - (op.ticks - result.ticks); + result.ticks = BBT_Time::ticks_per_beat - (op.ticks - result.ticks); } else { result.ticks -= op.ticks; } @@ -2002,11 +2000,11 @@ TempoMap::framepos_plus_bbt (framepos_t pos, BBT_Time op) const } if (op.ticks) { - if (op.ticks >= Meter::ticks_per_beat) { + if (op.ticks >= BBT_Time::ticks_per_beat) { pos += frames_per_beat; - pos += llrint (frames_per_beat * ((op.ticks % (uint32_t) Meter::ticks_per_beat) / (double) Meter::ticks_per_beat)); + pos += llrint (frames_per_beat * ((op.ticks % (uint32_t) BBT_Time::ticks_per_beat) / (double) BBT_Time::ticks_per_beat)); } else { - pos += llrint (frames_per_beat * (op.ticks / (double) Meter::ticks_per_beat)); + pos += llrint (frames_per_beat * (op.ticks / (double) BBT_Time::ticks_per_beat)); } } @@ -2071,7 +2069,7 @@ TempoMap::framewalk_to_beats (framepos_t pos, framecnt_t distance) const */ if (ddist < frames_per_beat) { - beats += Meter::ticks_per_beat * (ddist/frames_per_beat); + beats += BBT_Time::ticks_per_beat * (ddist/frames_per_beat); break; } diff --git a/libs/surfaces/mackie/mackie_control_protocol.cc b/libs/surfaces/mackie/mackie_control_protocol.cc index 17b013713d..ce2b2088d2 100644 --- a/libs/surfaces/mackie/mackie_control_protocol.cc +++ b/libs/surfaces/mackie/mackie_control_protocol.cc @@ -1068,8 +1068,8 @@ MackieControlProtocol::format_bbt_timecode (framepos_t now_frame) subdiv = 3; } - uint32_t subdivisions = bbt_time.ticks / uint32_t (Meter::ticks_per_beat / subdiv); - uint32_t ticks = bbt_time.ticks % uint32_t (Meter::ticks_per_beat / subdiv); + uint32_t subdivisions = bbt_time.ticks / uint32_t (Timecode::BBT_Time::ticks_per_beat / subdiv); + uint32_t ticks = bbt_time.ticks % uint32_t (Timecode::BBT_Time::ticks_per_beat / subdiv); os << setw(2) << setfill('0') << subdivisions + 1; os << setw(3) << setfill('0') << ticks; diff --git a/libs/timecode/src/bbt_time.cc b/libs/timecode/src/bbt_time.cc new file mode 100644 index 0000000000..43b65c218b --- /dev/null +++ b/libs/timecode/src/bbt_time.cc @@ -0,0 +1,37 @@ +/* + Copyright (C) 2002-2010 Paul Davis + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2 of the License, or (at your + option) any later version. + + This program is distributed in the hope that it will be useful, but WITHOUT + ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public + License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include <cmath> + +#include "timecode/bbt_time.h" + +using namespace Timecode; + +const double BBT_Time::ticks_per_beat = 1920.0; + +BBT_Time::BBT_Time (double beats) +{ + /* NOTE: this does not construct a BBT time in a canonical form, + in that beats may be a very large number, and bars will + always be zero. + */ + + bars = 0; + beats = rint (floor (beats)); + ticks = rint (floor (BBT_Time::ticks_per_beat * fmod (beats, 1.0))); +} diff --git a/libs/timecode/timecode/bbt_time.h b/libs/timecode/timecode/bbt_time.h index a388a2a073..226a2fc894 100644 --- a/libs/timecode/timecode/bbt_time.h +++ b/libs/timecode/timecode/bbt_time.h @@ -27,6 +27,8 @@ namespace Timecode { /** Bar, Beat, Tick Time (i.e. Tempo-Based Time) */ struct BBT_Time { + static const double ticks_per_beat; + uint32_t bars; uint32_t beats; uint32_t ticks; @@ -36,6 +38,8 @@ struct BBT_Time { BBT_Time (uint32_t ba, uint32_t be, uint32_t t) : bars (ba), beats (be), ticks (t) {} + + BBT_Time (double beats); bool operator< (const BBT_Time& other) const { return bars < other.bars || diff --git a/libs/timecode/wscript b/libs/timecode/wscript index efdc814053..4eb3c66c8f 100644 --- a/libs/timecode/wscript +++ b/libs/timecode/wscript @@ -33,7 +33,7 @@ def configure(conf): def build(bld): # Library obj = bld.new_task_gen('cxx', 'shlib') - obj.source = 'src/time.cc' + obj.source = [ 'src/time.cc', 'src/bbt_time.cc' ] obj.export_incdirs = ['.'] obj.includes = ['.', './src'] obj.name = 'libtimecode' |