#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/tempo.h"
+#include "ardour/utils.h"
#include "i18n.h"
#include <locale.h>
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)
TempoSection *ts;
if ((ts = dynamic_cast<TempoSection*>(*i)) != 0 && ts == &existing) {
-
- *((Tempo *) ts) = replacement;
+
+ *((Tempo *) ts) = replacement;
replaced = true;
timestamp_metrics (true);
+
break;
}
}
}
}
+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;
} 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;
-
- bbt_time_with_metric ((*i)->frame(), bbt, Metric (*meter, *tempo));
+ Metric 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
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);
}
}
{
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
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
+ that means that the beats and ticks should be inside a bar
*/
nframes_t frames = 0;
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;
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);
nframes_t frames = 0;
BBT_Time when;
- bbt_time(pos,when);
+ bbt_time(pos, when);
{
Glib::RWLock::ReaderLock lm (lock);
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;
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
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);
}
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;
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;
}
nframes_t
-
TempoMap::round_to_type (nframes_t frame, int dir, BBTPointType type)
{
Metric metric = metric_at (frame);
case Bar:
if (dir < 0) {
/* relax */
-
} 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;
} 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)) {
break;
}
-
+
/*
- cerr << "for " << frame << " round to " << bbt << " using "
- << metric.start()
- << endl;
+ cerr << "for " << frame << " round to " << bbt << " using "
+ << metric.start()
+ << endl;
*/
-
return metric.frame() + count_frames_between (metric.start(), bbt);
}
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();
}
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
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;
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);
}
}
+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));
+}
projects / ardour.git / blobdiff