/*
- Copyright (C) 2000-2002 Paul Davis
+ Copyright (C) 2000-2002 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <sigc++/bind.h>
#include <glibmm/thread.h>
-#include <pbd/xml++.h>
-#include <ardour/tempo.h>
-#include <ardour/utils.h>
+#include "pbd/xml++.h"
+#include "ardour/debug.h"
+#include "ardour/tempo.h"
+#include "ardour/utils.h"
#include "i18n.h"
#include <locale.h>
error << _("TempoSection XML node has an illegal \"beats_per_minute\" value") << endmsg;
throw failed_constructor();
}
-
+
if ((prop = node.property ("note-type")) == 0) {
/* older session, make note type be quarter by default */
_note_type = 4.0;
throw failed_constructor();
}
- set_movable (prop->value() == "yes");
+ set_movable (string_is_affirmative (prop->value()));
}
XMLNode&
char buf[256];
LocaleGuard lg (X_("POSIX"));
- snprintf (buf, sizeof (buf), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
+ snprintf (buf, sizeof (buf), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
start().bars,
start().beats,
start().ticks);
error << _("MeterSection XML node has no \"note-type\" property") << endmsg;
throw failed_constructor();
}
-
+
if (sscanf (prop->value().c_str(), "%lf", &_note_type) != 1 || _note_type < 0.0) {
error << _("MeterSection XML node has an illegal \"note-type\" value") << endmsg;
throw failed_constructor();
throw failed_constructor();
}
- set_movable (prop->value() == "yes");
+ set_movable (string_is_affirmative (prop->value()));
}
XMLNode&
char buf[256];
LocaleGuard lg (X_("POSIX"));
- snprintf (buf, sizeof (buf), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
+ snprintf (buf, sizeof (buf), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
start().bars,
start().beats,
start().ticks);
_frame_rate = fr;
last_bbt_valid = false;
BBT_Time start;
-
+
start.bars = 1;
start.beats = 1;
start.ticks = 0;
m->set_movable (false);
/* note: frame time is correct (zero) for both of these */
-
+
metrics->push_back (t);
metrics->push_back (m);
}
int
TempoMap::move_metric_section (MetricSection& section, const BBT_Time& when)
{
- if (when == section.start()) {
+ if (when == section.start() || !section.movable()) {
return -1;
}
- if (!section.movable()) {
- return 1;
- }
-
Glib::RWLock::WriterLock lm (lock);
MetricSectionSorter cmp;
- BBT_Time corrected (when);
-
- if (dynamic_cast<MeterSection*>(§ion) != 0) {
- if (corrected.beats > 1) {
- corrected.beats = 1;
- corrected.bars++;
+
+ if (when.beats != 1) {
+
+ /* position by audio frame, then recompute BBT timestamps from the audio ones */
+
+ nframes_t frame = frame_time (when);
+ // cerr << "nominal frame time = " << frame << endl;
+
+ nframes_t prev_frame = round_to_type (frame, -1, Beat);
+ nframes_t next_frame = round_to_type (frame, 1, Beat);
+
+ // cerr << "previous beat at " << prev_frame << " next at " << next_frame << endl;
+
+ /* use the closest beat */
+
+ if ((frame - prev_frame) < (next_frame - frame)) {
+ frame = prev_frame;
+ } else {
+ frame = next_frame;
}
+
+ // cerr << "actual frame time = " << frame << endl;
+ section.set_frame (frame);
+ // cerr << "frame time = " << section.frame() << endl;
+ timestamp_metrics (false);
+ // cerr << "new BBT time = " << section.start() << endl;
+ metrics->sort (cmp);
+
+ } else {
+
+ /* positioned at bar start already, so just put it there */
+
+ section.set_start (when);
+ metrics->sort (cmp);
+ timestamp_metrics (true);
}
- corrected.ticks = 0;
- section.set_start (corrected);
- metrics->sort (cmp);
- timestamp_metrics (true);
return 0;
}
StateChanged (Change (0));
}
}
-
void
TempoMap::remove_tempo (const TempoSection& tempo)
Metrics::iterator i;
for (i = metrics->begin(); i != metrics->end(); ++i) {
-
+
if (with_bbt) {
if ((*i)->start() < section->start()) {
continue;
} else {
if ((*i)->frame() < section->frame()) {
continue;
- }
+ }
}
metrics->insert (i, section);
break;
}
-
+
if (i == metrics->end()) {
metrics->insert (metrics->end(), section);
}
-
+
timestamp_metrics (with_bbt);
-}
+}
void
TempoMap::add_tempo (const Tempo& tempo, BBT_Time where)
Glib::RWLock::WriterLock lm (lock);
/* new tempos always start on a beat */
-
+
where.ticks = 0;
-
+
do_insert (new TempoSection (where, tempo.beats_per_minute(), tempo.note_type()), true);
}
{
bool replaced = false;
- {
+ {
Glib::RWLock::WriterLock lm (lock);
Metrics::iterator i;
-
+
for (i = metrics->begin(); i != metrics->end(); ++i) {
TempoSection *ts;
if ((ts = dynamic_cast<TempoSection*>(*i)) != 0 && ts == &existing) {
-
- *((Tempo *) ts) = replacement;
+
+ *((Tempo *) ts) = replacement;
replaced = true;
timestamp_metrics (true);
+
break;
}
}
}
-
+
if (replaced) {
StateChanged (Change (0));
}
}
/* new meters *always* start on a beat. */
-
+
where.ticks = 0;
do_insert (new MeterSection (where, meter.beats_per_bar(), meter.note_divisor()), true);
{
bool replaced = false;
- {
+ {
Glib::RWLock::WriterLock lm (lock);
Metrics::iterator i;
-
+
for (i = metrics->begin(); i != metrics->end(); ++i) {
MeterSection *ms;
if ((ms = dynamic_cast<MeterSection*>(*i)) != 0 && ms == &existing) {
-
+
*((Meter*) ms) = replacement;
replaced = true;
}
}
}
-
+
if (replaced) {
StateChanged (Change (0));
}
}
+void
+TempoMap::change_initial_tempo (double beats_per_minute, double note_type)
+{
+ Tempo newtempo (beats_per_minute, note_type);
+ TempoSection* t;
+
+ for (Metrics::iterator i = metrics->begin(); i != metrics->end(); ++i) {
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ *((Tempo*) t) = newtempo;
+ StateChanged (Change (0));
+ break;
+ }
+ }
+}
+
void
TempoMap::change_existing_tempo_at (nframes_t where, double beats_per_minute, double note_type)
{
if (use_bbt) {
+ // cerr << "\n\n\n ######################\nTIMESTAMP via BBT ##############\n" << endl;
+
nframes_t current = 0;
nframes_t section_frames;
BBT_Time start;
BBT_Time end;
for (i = metrics->begin(); i != metrics->end(); ++i) {
-
+
end = (*i)->start();
-
+
section_frames = count_frames_between_metrics (*meter, *tempo, start, end);
-
+
current += section_frames;
-
+
start = end;
-
+
(*i)->set_frame (current);
-
+
if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
tempo = t;
} else if ((m = dynamic_cast<MeterSection*>(*i)) != 0) {
} else {
+ // cerr << "\n\n\n ######################\nTIMESTAMP via AUDIO ##############\n" << endl;
+
bool first = true;
+ MetricSection* prev = 0;
for (i = metrics->begin(); i != metrics->end(); ++i) {
BBT_Time bbt;
+ TempoMetric metric (*meter, *tempo);
- bbt_time_with_metric ((*i)->frame(), bbt, Metric (*meter, *tempo));
+ if (prev) {
+ metric.set_start (prev->start());
+ metric.set_frame (prev->frame());
+ } else {
+ // metric will be at frames=0 bbt=1|1|0 by default
+ // which is correct for our purpose
+ }
+
+ bbt_time_with_metric ((*i)->frame(), bbt, metric);
// cerr << "timestamp @ " << (*i)->frame() << " with " << bbt.bars << "|" << bbt.beats << "|" << bbt.ticks << " => ";
+
if (first) {
first = false;
} else {
- if (bbt.beats != 1 || bbt.ticks != 0) {
+
+ if (bbt.ticks > Meter::ticks_per_beat/2) {
+ /* round up to next beat */
+ bbt.beats += 1;
+ }
+
+ bbt.ticks = 0;
+
+ if (bbt.beats != 1) {
+ /* round up to next bar */
bbt.bars += 1;
bbt.beats = 1;
- bbt.ticks = 0;
}
}
- // cerr << bbt.bars << "|" << bbt.beats << "|" << bbt.ticks << endl;
+ //s cerr << bbt.bars << "|" << bbt.beats << "|" << bbt.ticks << endl;
(*i)->set_start (bbt);
if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
tempo = t;
+ // cerr << "NEW TEMPO, frame = " << (*i)->frame() << " start = " << (*i)->start() <<endl;
} else if ((m = dynamic_cast<MeterSection*>(*i)) != 0) {
meter = m;
+ // cerr << "NEW METER, frame = " << (*i)->frame() << " start = " << (*i)->start() <<endl;
} else {
fatal << _("programming error: unhandled MetricSection type") << endmsg;
/*NOTREACHED*/
}
+
+ prev = (*i);
}
}
// dump (cerr);
+ // cerr << "###############################################\n\n\n" << endl;
+
}
-TempoMap::Metric
+TempoMetric
TempoMap::metric_at (nframes_t frame) const
{
- Metric m (first_meter(), first_tempo());
+ TempoMetric m (first_meter(), first_tempo());
const Meter* meter;
const Tempo* tempo;
m.set_frame ((*i)->frame ());
m.set_start ((*i)->start ());
}
-
+
return m;
}
-TempoMap::Metric
+TempoMetric
TempoMap::metric_at (BBT_Time bbt) const
{
- Metric m (first_meter(), first_tempo());
+ TempoMetric m (first_meter(), first_tempo());
const Meter* meter;
const Tempo* tempo;
} else if ((meter = dynamic_cast<const MeterSection*>(*i)) != 0) {
m.set_meter (*meter);
}
-
+
m.set_frame ((*i)->frame ());
m.set_start (section_start);
}
void
TempoMap::bbt_time (nframes_t frame, BBT_Time& bbt) const
{
- {
- Glib::RWLock::ReaderLock lm (lock);
+ {
+ Glib::RWLock::ReaderLock lm (lock);
bbt_time_unlocked (frame, bbt);
}
}
}
void
-TempoMap::bbt_time_with_metric (nframes_t frame, BBT_Time& bbt, const Metric& metric) const
+TempoMap::bbt_time_with_metric (nframes_t frame, BBT_Time& bbt, const TempoMetric& metric) const
{
nframes_t frame_diff;
- uint32_t xtra_bars = 0;
- double xtra_beats = 0;
- double beats = 0;
+ // 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 frames_per_bar = metric.meter().frames_per_bar (metric.tempo(), _frame_rate);
- const double beat_frames = metric.tempo().frames_per_beat (_frame_rate, metric.meter());
+ const double ticks_per_frame = metric.tempo().frames_per_beat (_frame_rate, metric.meter()) / Meter::ticks_per_beat;
/* now compute how far beyond that point we actually are. */
frame_diff = frame - metric.frame();
- xtra_bars = (uint32_t) floor (frame_diff / frames_per_bar);
- frame_diff -= (uint32_t) floor (xtra_bars * frames_per_bar);
- xtra_beats = (double) frame_diff / beat_frames;
-
-
- /* and set the returned value */
-
- /* and correct beat/bar shifts to match the meter.
- remember: beat and bar counting is 1-based,
- not zero-based
- also the meter may contain a fraction
- */
-
- bbt.bars = metric.start().bars + xtra_bars;
-
- beats = (double) metric.start().beats + xtra_beats;
-
- bbt.bars += (uint32_t) floor(beats/ (beats_per_bar+1) );
-
- beats = fmod(beats - 1, beats_per_bar )+ 1.0;
- bbt.ticks = (uint32_t)( round((beats - floor(beats)) *(double) Meter::ticks_per_beat));
- bbt.beats = (uint32_t) floor(beats);
-
+ 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;
+
+ 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);
+ bbt.beats = (uint32_t)fmod((double)bbt.beats, beats_per_bar);
+
+ /* if we have a fractional number of beats per bar, we see if
+ we're in the last beat (the fractional one). if so, we
+ round ticks appropriately and bump to the next bar. */
+ double beat_fraction = beats_per_bar - floor(beats_per_bar);
+ /* XXX one problem here is that I'm not sure how to handle
+ fractional beats that don't evenly divide ticks_per_beat.
+ If they aren't handled consistently, I would guess we'll
+ continue to have strange discrepancies occuring. Perhaps
+ 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);
+ if(bbt.beats > (uint32_t)floor(beats_per_bar) &&
+ bbt.ticks >= ticks_on_last_beat) {
+ bbt.ticks -= ticks_on_last_beat;
+ bbt.beats = 0;
+ bbt.bars++;
+ }
+
+ bbt.beats++; // correction for 1-based counting, see above for matching operation.
+
+ // cerr << "-----\t RETURN " << bbt << endl;
}
-
-nframes_t
+nframes_t
TempoMap::count_frames_between ( const BBT_Time& start, const BBT_Time& end) const
{
- /* for this to work with fractional measure types, start and end have to be "legal" BBT types,
- that means that the beats and ticks should be inside a bar
+ /* for this to work with fractional measure types, start and end have to be "legal" BBT types,
+ that means that the beats and ticks should be inside a bar
*/
nframes_t frames = 0;
nframes_t start_frame = 0;
nframes_t end_frame = 0;
- Metric m = metric_at (start);
+ TempoMetric m = metric_at (start);
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)
+ double beat_offset = bar_offset*m.meter().beats_per_bar() - (m.start().beats-1) + (start.beats -1)
+ start.ticks/Meter::ticks_per_beat;
start_frame = m.frame() + (nframes_t) rint( beat_offset * m.tempo().frames_per_beat(_frame_rate, m.meter()));
- m = metric_at(end);
+ m = metric_at(end);
bar_offset = end.bars - m.start().bars;
- beat_offset = bar_offset * m.meter().beats_per_bar() - (m.start().beats -1) + (end.beats - 1)
+ beat_offset = bar_offset * m.meter().beats_per_bar() - (m.start().beats -1) + (end.beats - 1)
+ end.ticks/Meter::ticks_per_beat;
end_frame = m.frame() + (nframes_t) rint(beat_offset * m.tempo().frames_per_beat(_frame_rate, m.meter()));
frames = end_frame - start_frame;
return frames;
-
-}
-nframes_t
+}
+
+nframes_t
TempoMap::count_frames_between_metrics (const Meter& meter, const Tempo& tempo, const BBT_Time& start, const BBT_Time& end) const
{
- /*this is used in timestamping the metrics by actually counting the beats */
+ /* this is used in timestamping the metrics by actually counting the beats */
nframes_t frames = 0;
uint32_t bar = start.bars;
frames = 0;
while (bar < end.bars || (bar == end.bars && beat < end.beats)) {
-
+
if (beat >= beats_per_bar) {
beat = 1;
++bar;
++beats_counted;
- } else {
- ++beat;
- ++beats_counted;
+
if (beat > beats_per_bar) {
+
/* this is a fractional beat at the end of a fractional bar
- so it should only count for the fraction */
+ so it should only count for the fraction
+ */
+
beats_counted -= (ceil(beats_per_bar) - beats_per_bar);
}
+
+ } else {
+ ++beat;
+ ++beats_counted;
}
}
-
+
+ // cerr << "Counted " << beats_counted << " from " << start << " to " << end
+ // << " bpb were " << beats_per_bar
+ // << " fpb was " << beat_frames
+ // << endl;
+
frames = (nframes_t) floor (beats_counted * beat_frames);
return frames;
-
-}
-nframes_t
+}
+
+nframes_t
TempoMap::frame_time (const BBT_Time& bbt) const
{
BBT_Time start ; /* 1|1|0 */
return count_frames_between ( start, bbt);
}
-nframes_t
+nframes_t
TempoMap::bbt_duration_at (nframes_t pos, const BBT_Time& bbt, int dir) const
{
nframes_t frames = 0;
BBT_Time when;
- bbt_time(pos,when);
+ bbt_time(pos, when);
{
Glib::RWLock::ReaderLock lm (lock);
return frames;
}
-nframes_t
+nframes_t
TempoMap::bbt_duration_at_unlocked (const BBT_Time& when, const BBT_Time& bbt, int dir) const
{
double beats_per_bar;
BBT_Time result;
-
- result.bars = max(1U,when.bars + dir * bbt.bars) ;
+
+ result.bars = max(1U, when.bars + dir * bbt.bars) ;
result.beats = 1;
result.ticks = 0;
- Metric metric = metric_at(result);
+ TempoMetric metric = metric_at(result);
beats_per_bar = metric.meter().beats_per_bar();
- /*reduce things to legal bbt values
+ /*reduce things to legal bbt values
we have to handle possible fractional=shorter beats at the end of measures
and things like 0|11|9000 as a duration in a 4.5/4 measure
- the musical decision is that the fractional beat is also a beat , although a shorter one
+ the musical decision is that the fractional beat is also a beat , although a shorter one
*/
-
+
if (dir >= 0) {
result.beats = when.beats + bbt.beats;
result.ticks = when.ticks + bbt.ticks;
- while (result.beats >= (beats_per_bar+1)) {
+ while (result.beats >= (beats_per_bar + 1)) {
result.bars++;
result.beats -= (uint32_t) ceil(beats_per_bar);
metric = metric_at(result); // maybe there is a meter change
beats_per_bar = metric.meter().beats_per_bar();
-
+
}
- /*we now counted the beats and landed in the target measure, now deal with ticks
+ /*we now counted the beats and landed in the target measure, now deal with ticks
this seems complicated, but we want to deal with the corner case of a sequence of time signatures like 0.2/4-0.7/4
and with request like bbt = 3|2|9000 ,so we repeat the same loop but add ticks
*/
*/
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
+ (1 - (ceil(beats_per_bar) - beats_per_bar))* Meter::ticks_per_beat
: Meter::ticks_per_beat );
while (result.ticks >= ticks_at_beat) {
result.beats++;
result.ticks -= ticks_at_beat;
- if (result.beats >= (beats_per_bar+1)) {
+ if (result.beats >= (beats_per_bar + 1)) {
result.bars++;
result.beats = 1;
metric = metric_at(result); // maybe there is a meter change
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
+ (1 - (ceil(beats_per_bar) - beats_per_bar) ) * Meter::ticks_per_beat
: Meter::ticks_per_beat);
}
-
+
} else {
uint32_t b = bbt.beats;
/* count beats */
while( b > when.beats ) {
-
+
result.bars = max(1U,result.bars-- ) ;
metric = metric_at(result); // maybe there is a meter change
beats_per_bar = metric.meter().beats_per_bar();
if (b >= ceil(beats_per_bar)) {
-
+
b -= (uint32_t) ceil(beats_per_bar);
} else {
- b = (uint32_t) ceil(beats_per_bar)- b + when.beats ;
+ b = (uint32_t) ceil(beats_per_bar) - b + when.beats ;
}
}
result.beats = when.beats - b;
-
+
/*count ticks */
if (bbt.ticks <= when.ticks) {
do {
if (result.beats == 1) {
- result.bars = max(1U,result.bars-- ) ;
+ result.bars = max(1U, result.bars-- ) ;
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)) * Meter::ticks_per_beat) ;
} else {
result.beats --;
ticks_at_beat = (uint32_t) Meter::ticks_per_beat;
}
-
+
if (t <= ticks_at_beat) {
- result.ticks = ticks_at_beat - t;
+ result.ticks = ticks_at_beat - t;
} else {
t-= ticks_at_beat;
}
}
nframes_t
-
-TempoMap::round_to_beat_subdivision (nframes_t fr, int sub_num)
+TempoMap::round_to_beat_subdivision (nframes_t fr, int sub_num, int dir)
{
BBT_Time the_beat;
uint32_t ticks_one_half_subdivisions_worth;
uint32_t ticks_one_subdivisions_worth;
+ uint32_t difference;
bbt_time(fr, the_beat);
ticks_one_subdivisions_worth = (uint32_t)Meter::ticks_per_beat / sub_num;
ticks_one_half_subdivisions_worth = ticks_one_subdivisions_worth / 2;
- if (the_beat.ticks % ticks_one_subdivisions_worth > ticks_one_half_subdivisions_worth) {
- uint32_t difference = ticks_one_subdivisions_worth - (the_beat.ticks % ticks_one_subdivisions_worth);
- if (the_beat.ticks + difference >= (uint32_t)Meter::ticks_per_beat) {
- the_beat.beats++;
- the_beat.ticks += difference;
- the_beat.ticks -= (uint32_t)Meter::ticks_per_beat;
- } else {
- the_beat.ticks += difference;
- }
+ if (dir > 0) {
+
+ /* round to next */
+
+ uint32_t mod = the_beat.ticks % ticks_one_subdivisions_worth;
+
+ if (mod == 0) {
+ /* right on the subdivision, so the difference is just the subdivision ticks */
+ difference = ticks_one_subdivisions_worth;
+
+ } else {
+ /* not on subdivision, compute distance to next subdivision */
+
+ difference = ticks_one_subdivisions_worth - mod;
+ }
+
+ if (the_beat.ticks + difference >= (uint32_t)Meter::ticks_per_beat) {
+ the_beat.beats++;
+ the_beat.ticks += difference;
+ the_beat.ticks -= (uint32_t)Meter::ticks_per_beat;
+ } else {
+ the_beat.ticks += difference;
+ }
+
+ } else if (dir < 0) {
+
+ /* round to previous */
+
+ uint32_t mod = the_beat.ticks % ticks_one_subdivisions_worth;
+
+ if (mod == 0) {
+ /* right on the subdivision, so the difference is just the subdivision ticks */
+ difference = ticks_one_subdivisions_worth;
+ cerr << "On the sub, move by 1 sub = " << difference << endl;
+ } else {
+ /* not on subdivision, compute distance to previous subdivision, which
+ is just the modulus.
+ */
+
+ difference = mod;
+ cerr << "off the sub, move by 1 sub = " << difference << endl;
+ }
+
+
+ cerr << "ticks = " << the_beat.ticks << endl;
+
+ if (the_beat.ticks < difference) {
+ cerr << "backup beats, set ticks to "
+ << (uint32_t)Meter::ticks_per_beat - difference << endl;
+ the_beat.beats--;
+ the_beat.ticks = (uint32_t)Meter::ticks_per_beat - difference;
+ } else {
+ cerr << " reduce ticks\n";
+ the_beat.ticks -= difference;
+ }
+
} else {
- the_beat.ticks -= the_beat.ticks % ticks_one_subdivisions_worth;
+ /* round to nearest */
+
+ if (the_beat.ticks % ticks_one_subdivisions_worth > ticks_one_half_subdivisions_worth) {
+ difference = ticks_one_subdivisions_worth - (the_beat.ticks % ticks_one_subdivisions_worth);
+ if (the_beat.ticks + difference >= (uint32_t)Meter::ticks_per_beat) {
+ the_beat.beats++;
+ the_beat.ticks += difference;
+ the_beat.ticks -= (uint32_t)Meter::ticks_per_beat;
+ } else {
+ the_beat.ticks += difference;
+ }
+ } else {
+ // difference = ticks_one_subdivisions_worth - (the_beat.ticks % ticks_one_subdivisions_worth);
+ the_beat.ticks -= the_beat.ticks % ticks_one_subdivisions_worth;
+ }
}
return frame_time (the_beat);
}
nframes_t
-
TempoMap::round_to_type (nframes_t frame, int dir, BBTPointType type)
{
- Metric metric = metric_at (frame);
+ TempoMetric metric = metric_at (frame);
BBT_Time bbt;
BBT_Time start;
bbt_time_with_metric (frame, bbt, metric);
+
switch (type) {
case Bar:
+ DEBUG_TRACE(DEBUG::SnapBBT, string_compose ("round from %1 (%3) to bars in direction %2\n", frame, (dir < 0 ? "back" : "forward"), bbt));
if (dir < 0) {
- /* relax */
-
+ if (bbt.bars > 1) {
+ bbt.bars--;
+ }
} else if (dir > 0) {
if (bbt.beats > 0) {
bbt.bars++;
+ } else if (metric.frame() < frame) {
+ bbt.bars++;
}
} else {
if (bbt.beats > metric.meter().beats_per_bar()/2) {
bbt.bars++;
}
-
}
bbt.beats = 1;
bbt.ticks = 0;
break;
-
+
case Beat:
+ DEBUG_TRACE(DEBUG::SnapBBT, string_compose ("round from %1 (%3) to beat in direction %2\n", frame, (dir < 0 ? "back" : "forward"), bbt));
if (dir < 0) {
- /* relax */
+ if (bbt.beats > 1) {
+ bbt.beats--;
+ }
+
} else if (dir > 0) {
if (bbt.ticks > 0) {
bbt.beats++;
+ } else if (metric.frame() < frame) {
+ bbt.beats++;
}
} else {
if (bbt.ticks >= (Meter::ticks_per_beat/2)) {
}
bbt.ticks = 0;
break;
-
- }
- /*
- cerr << "for " << frame << " round to " << bbt << " using "
- << metric.start()
- << endl;
- */
+ }
+ DEBUG_TRACE(DEBUG::SnapBBT, string_compose ("\tat %1 count frames from %2 to %3 = %4\n", metric.frame(), metric.start(), bbt, count_frames_between (metric.start(), bbt)));
return metric.frame() + count_frames_between (metric.start(), bbt);
}
}
/* We now have:
-
+
meter -> the Meter for "lower"
tempo -> the Tempo for "lower"
i -> for first new metric after "lower", possibly metrics->end()
beats_per_bar = meter->beats_per_bar ();
frames_per_bar = meter->frames_per_bar (*tempo, _frame_rate);
beat_frames = tempo->frames_per_beat (_frame_rate, *meter);
-
+
if (meter->frame() > tempo->frame()) {
bar = meter->start().bars;
beat = meter->start().beats;
lower frame bound passed in. assumes that current is initialized
above to be on a beat.
*/
-
+
delta_bars = (lower-current) / frames_per_bar;
delta_beats = modf(delta_bars, &dummy) * beats_per_bar;
current += (floor(delta_bars) * frames_per_bar) + (floor(delta_beats) * beat_frames);
beat += (uint32_t) (floor(delta_beats));
points = new BBTPointList;
-
+
do {
if (i == metrics->end()) {
limit = upper;
+ // cerr << "== limit set to end of request @ " << limit << endl;
} else {
+ // cerr << "== limit set to next metric @ " << (*i)->frame() << endl;
limit = (*i)->frame();
}
limit = min (limit, upper);
while (current < limit) {
-
+
/* if we're at the start of a bar, add bar point */
if (beat == 1) {
}
beat_frame += beat_frames;
current+= beat_frames;
-
+
beat++;
}
+ // cerr << "out of beats, @ end ? " << (i == metrics->end()) << " out of bpb ? "
+ // << (beat > ceil(beats_per_bar))
+ // << endl;
+
if (beat > ceil(beats_per_bar) || i != metrics->end()) {
/* we walked an entire bar. its
just filled had 10 beat marks,
but the bar end is 1/2 beat before
the last beat mark.
- And it is also possible that a tempo
- change occured in the middle of a bar,
+ And it is also possible that a tempo
+ change occured in the middle of a bar,
so we subtract the possible extra fraction from the current
*/
if (beat > ceil (beats_per_bar)) {
/* next bar goes where the numbers suggest */
current -= beat_frames * (ceil(beats_per_bar)-beats_per_bar);
+ // cerr << "++ next bar from numbers\n";
} else {
/* next bar goes where the next metric is */
current = limit;
+ // cerr << "++ next bar at next metric\n";
}
bar++;
beat = 1;
- }
-
+ }
+
}
/* if we're done, then we're done */
beat = 1;
}
+ current = (*i)->frame ();
+ // cerr << "loop around with current @ " << current << endl;
+
beats_per_bar = meter->beats_per_bar ();
frames_per_bar = meter->frames_per_bar (*tempo, _frame_rate);
beat_frames = tempo->frames_per_beat (_frame_rate, *meter);
-
+
++i;
}
} while (1);
return points;
-}
+}
const TempoSection&
TempoMap::tempo_section_at (nframes_t frame)
Glib::RWLock::ReaderLock lm (lock);
Metrics::iterator i;
TempoSection* prev = 0;
-
+
for (i = metrics->begin(); i != metrics->end(); ++i) {
TempoSection* t;
}
const Tempo&
-TempoMap::tempo_at (nframes_t frame)
+TempoMap::tempo_at (nframes_t frame) const
{
- Metric m (metric_at (frame));
+ TempoMetric m (metric_at (frame));
return m.tempo();
}
const Meter&
-TempoMap::meter_at (nframes_t frame)
+TempoMap::meter_at (nframes_t frame) const
{
- Metric m (metric_at (frame));
+ TempoMetric m (metric_at (frame));
return m.meter();
}
}
int
-TempoMap::set_state (const XMLNode& node)
+TempoMap::set_state (const XMLNode& node, int /*version*/)
{
{
Glib::RWLock::WriterLock lm (lock);
XMLNodeList nlist;
XMLNodeConstIterator niter;
Metrics old_metrics (*metrics);
-
+
metrics->clear();
nlist = node.children();
-
+
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
XMLNode* child = *niter;
-
+
if (child->name() == TempoSection::xml_state_node_name) {
-
+
try {
metrics->push_back (new TempoSection (*child));
}
-
+
catch (failed_constructor& err){
error << _("Tempo map: could not set new state, restoring old one.") << endmsg;
*metrics = old_metrics;
break;
}
-
+
} else if (child->name() == MeterSection::xml_state_node_name) {
-
+
try {
metrics->push_back (new MeterSection (*child));
}
-
+
catch (failed_constructor& err) {
error << _("Tempo map: could not set new state, restoring old one.") << endmsg;
*metrics = old_metrics;
}
}
}
-
+
if (niter == nlist.end()) {
-
+
MetricSectionSorter cmp;
metrics->sort (cmp);
timestamp_metrics (true);
}
}
-
+
StateChanged (Change (0));
return 0;
{
const MeterSection* m;
const TempoSection* t;
-
+
for (Metrics::const_iterator i = metrics->begin(); i != metrics->end(); ++i) {
if ((t = dynamic_cast<const TempoSection*>(*i)) != 0) {
o << "Tempo @ " << *i << ' ' << t->beats_per_minute() << " BPM (denom = " << t->note_type() << ") at " << t->start() << " frame= " << t->frame() << " (move? "
<< t->movable() << ')' << endl;
} else if ((m = dynamic_cast<const MeterSection*>(*i)) != 0) {
- o << "Meter @ " << *i << ' ' << m->beats_per_bar() << '/' << m->note_divisor() << " at " << m->start() << " frame= " << m->frame()
+ o << "Meter @ " << *i << ' ' << m->beats_per_bar() << '/' << m->note_divisor() << " at " << m->start() << " frame= " << m->frame()
<< " (move? " << m->movable() << ')' << endl;
}
}
}
+int
+TempoMap::n_tempos() const
+{
+ Glib::RWLock::ReaderLock lm (lock);
+ int cnt = 0;
+
+ for (Metrics::const_iterator i = metrics->begin(); i != metrics->end(); ++i) {
+ if (dynamic_cast<const TempoSection*>(*i) != 0) {
+ cnt++;
+ }
+ }
+
+ return cnt;
+}
+
+int
+TempoMap::n_meters() const
+{
+ Glib::RWLock::ReaderLock lm (lock);
+ int cnt = 0;
+
+ for (Metrics::const_iterator i = metrics->begin(); i != metrics->end(); ++i) {
+ if (dynamic_cast<const MeterSection*>(*i) != 0) {
+ cnt++;
+ }
+ }
+
+ return cnt;
+}
+
+void
+TempoMap::insert_time (nframes_t where, nframes_t amount)
+{
+ for (Metrics::iterator i = metrics->begin(); i != metrics->end(); ++i) {
+ if ((*i)->frame() >= where) {
+ (*i)->set_frame ((*i)->frame() + amount);
+ }
+ }
+
+ timestamp_metrics (false);
+
+ StateChanged (Change (0));
+}
+
+BBT_Time
+TempoMap::bbt_add (const BBT_Time& a, const BBT_Time& b, const TempoMetric& /*metric*/)
+{
+ // FIXME: Obviously not correct!
+ return BBT_Time(a.bars + b.bars, a.beats + b.beats, a.ticks + b.ticks);
+}
+
+BBT_Time
+TempoMap::bbt_add (const BBT_Time& a, const BBT_Time& b)
+{
+ // FIXME: Obviously not correct!
+ return BBT_Time(a.bars + b.bars, a.beats + b.beats, a.ticks + b.ticks);
+}
+
+BBT_Time
+TempoMap::bbt_subtract (const BBT_Time& a, const BBT_Time& b)
+{
+ // FIXME: Obviously not correct!
+ return BBT_Time(a.bars - b.bars, a.beats - b.beats, a.ticks - b.ticks);
+}
projects / ardour.git / blobdiff