Interpret start & length_beats properties as double rather than Evoral::Beats.

	- Evoral::Beats operator!= would prevent an increment
	  of start_beats by intervals of less than a tick,
	  so its possible that other subtle problems
	  existed due to this kind of thing.

7 files changed, 42 insertions, 44 deletions

diff --git a/gtk2_ardour/editor_drag.cc b/gtk2_ardour/editor_drag.cc
index f7b75a5855..da9af5c73a 100644
--- a/gtk2_ardour/editor_drag.cc
+++ b/gtk2_ardour/editor_drag.cc
@@ -5584,7 +5584,7 @@ NoteDrag::total_dx (const guint state) const
 	frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
 
 	/* primary note time */
-	double const quarter_note_start = map.quarter_note_at_beat (_region->region()->beat() - _region->midi_region()->start_beats().to_double());
+	double const quarter_note_start = map.quarter_note_at_beat (_region->region()->beat() - _region->midi_region()->start_beats());
 	frameoffset_t const n = map.frame_at_quarter_note (quarter_note_start + _primary->note()->time().to_double());
 
 	/* new time of the primary note in session frames */
diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index f1404c936c..1900f71abc 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -1673,8 +1673,8 @@ MidiRegionView::note_in_region_range (const boost::shared_ptr<NoteType> note, bo
 	const boost::shared_ptr<ARDOUR::MidiRegion> midi_reg = midi_region();
 
 	/* must compare double explicitly as Beats::operator< rounds to ppqn */
-	const bool outside = (note->time().to_double() < midi_reg->start_beats().to_double() ||
-			      note->time().to_double() > (midi_reg->start_beats() + midi_reg->length_beats()).to_double());
+	const bool outside = (note->time().to_double() < midi_reg->start_beats() ||
+			      note->time().to_double() > midi_reg->start_beats() + midi_reg->length_beats());
 
 	visible = (note->note() >= midi_stream_view()->lowest_note()) &&
 		(note->note() <= midi_stream_view()->highest_note());
@@ -1704,7 +1704,7 @@ MidiRegionView::update_sustained (Note* ev, bool update_ghost_regions)
 	TempoMap& map (trackview.session()->tempo_map());
 	const boost::shared_ptr<ARDOUR::MidiRegion> mr = midi_region();
 	boost::shared_ptr<NoteType> note = ev->note();
-	const double qn_note_time = note->time().to_double() + ((_region->pulse() * 4.0) - mr->start_beats().to_double());
+	const double qn_note_time = note->time().to_double() + ((_region->pulse() * 4.0) - mr->start_beats());
 	const framepos_t note_start_frames = map.frame_at_quarter_note (qn_note_time) - _region->position();
 	const double x0 = trackview.editor().sample_to_pixel (note_start_frames);
 	double x1;
@@ -1713,13 +1713,13 @@ MidiRegionView::update_sustained (Note* ev, bool update_ghost_regions)
 
 	/* trim note display to not overlap the end of its region */
 	if (note->length() > 0) {
-		Evoral::Beats note_end_time = note->end_time();
+		double note_end_time = note->end_time().to_double();
 
 		if (note->end_time() > mr->start_beats() + mr->length_beats()) {
 			note_end_time = mr->start_beats() + mr->length_beats();
 		}
-		const double session_qn_start = (_region->pulse() * 4.0) - mr->start_beats().to_double();
-		const double quarter_note_end_time = session_qn_start  + note_end_time.to_double();
+		const double session_qn_start = (_region->pulse() * 4.0) - mr->start_beats();
+		const double quarter_note_end_time = session_qn_start  + note_end_time;
 
 		const framepos_t note_end_frames = map.frame_at_quarter_note (quarter_note_end_time) - _region->position();
 		x1 = std::max(1., trackview.editor().sample_to_pixel (note_end_frames)) - 1;
@@ -1773,7 +1773,7 @@ MidiRegionView::update_hit (Hit* ev, bool update_ghost_regions)
 {
 	boost::shared_ptr<NoteType> note = ev->note();
 
-	const double note_time_qn = note->time().to_double() + ((_region->pulse() * 4.0) - midi_region()->start_beats().to_double());
+	const double note_time_qn = note->time().to_double() + ((_region->pulse() * 4.0) - midi_region()->start_beats());
 	const framepos_t note_start_frames = trackview.session()->tempo_map().frame_at_quarter_note (note_time_qn) - _region->position();
 
 	const double x = trackview.editor().sample_to_pixel(note_start_frames);
@@ -2588,7 +2588,7 @@ MidiRegionView::note_dropped(NoteBase *, frameoffset_t dt, int8_t dnote)
 
 	for (Selection::iterator i = _selection.begin(); i != _selection.end() ; ++i) {
 
-		double const start_qn = (_region->pulse() * 4.0) - midi_region()->start_beats().to_double();
+		double const start_qn = (_region->pulse() * 4.0) - midi_region()->start_beats();
 		framepos_t new_frames = map.frame_at_quarter_note (start_qn + (*i)->note()->time().to_double()) + dt;
 		Evoral::Beats new_time = Evoral::Beats (map.quarter_note_at_frame (new_frames) - start_qn);
 		if (new_time < 0) {
@@ -2915,7 +2915,7 @@ MidiRegionView::commit_resizing (NoteBase* primary, bool at_front, double delta_
 
 		/* and then to beats */
 		const double e_baf = tmap.exact_beat_at_frame (current_fr + midi_region()->position(), divisions);
-		const double quarter_note_start_beat = tmap.quarter_note_at_beat (_region->beat() - midi_region()->start_beats().to_double());
+		const double quarter_note_start_beat = tmap.quarter_note_at_beat (_region->beat() - midi_region()->start_beats());
 		const Evoral::Beats x_beats = Evoral::Beats (tmap.quarter_note_at_beat (e_baf) - quarter_note_start_beat);
 
 		if (at_front && x_beats < canvas_note->note()->end_time()) {
@@ -4134,7 +4134,7 @@ MidiRegionView::snap_frame_to_grid_underneath (framepos_t p, int32_t divisions,
 			eqaf -= grid_beats.to_double();
 		}
 	}
-	const double session_start_off = (_region->pulse() * 4.0) - midi_region()->start_beats().to_double();
+	const double session_start_off = (_region->pulse() * 4.0) - midi_region()->start_beats();
 
 	return Evoral::Beats (eqaf - session_start_off);
 }
diff --git a/libs/ardour/ardour/midi_region.h b/libs/ardour/ardour/midi_region.h
index 29d3b99d4d..132048a242 100644
--- a/libs/ardour/ardour/midi_region.h
+++ b/libs/ardour/ardour/midi_region.h
@@ -33,8 +33,8 @@ class XMLNode;
 
 namespace ARDOUR {
 	namespace Properties {
-		LIBARDOUR_API extern PBD::PropertyDescriptor<Evoral::Beats> start_beats;
-		LIBARDOUR_API extern PBD::PropertyDescriptor<Evoral::Beats> length_beats;
+		LIBARDOUR_API extern PBD::PropertyDescriptor<double> start_beats;
+		LIBARDOUR_API extern PBD::PropertyDescriptor<double> length_beats;
 	}
 }
 
@@ -106,8 +106,8 @@ class LIBARDOUR_API MidiRegion : public Region
 	boost::shared_ptr<const MidiModel> model() const;
 
 	void fix_negative_start ();
-	Evoral::Beats start_beats () {return _start_beats.val(); }
- 	Evoral::Beats length_beats () {return _length_beats.val(); }
+	double start_beats () {return _start_beats; }
+	double length_beats () {return _length_beats; }
 
 	void clobber_sources (boost::shared_ptr<MidiSource> source);
 
@@ -119,8 +119,8 @@ class LIBARDOUR_API MidiRegion : public Region
 
   private:
 	friend class RegionFactory;
-	PBD::Property<Evoral::Beats> _start_beats;
-	PBD::Property<Evoral::Beats> _length_beats;
+	PBD::Property<double> _start_beats;
+	PBD::Property<double> _length_beats;
 
 	MidiRegion (const SourceList&);
 	MidiRegion (boost::shared_ptr<const MidiRegion>);
diff --git a/libs/ardour/midi_diskstream.cc b/libs/ardour/midi_diskstream.cc
index 708884900c..732b51c17b 100644
--- a/libs/ardour/midi_diskstream.cc
+++ b/libs/ardour/midi_diskstream.cc
@@ -1051,7 +1051,7 @@ MidiDiskstream::transport_stopped_wallclock (struct tm& /*when*/, time_t /*twhen
 					/* start of this region is the offset between the start of its capture and the start of the whole pass */
 					plist.add (Properties::start, (*ci)->start - initial_capture);
 					plist.add (Properties::length, (*ci)->frames);
-					plist.add (Properties::length_beats, converter.from((*ci)->frames));
+					plist.add (Properties::length_beats, converter.from((*ci)->frames).to_double());
 					plist.add (Properties::name, region_name);
 
 					boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
diff --git a/libs/ardour/midi_region.cc b/libs/ardour/midi_region.cc
index d4cf35e82a..7d7619680a 100644
--- a/libs/ardour/midi_region.cc
+++ b/libs/ardour/midi_region.cc
@@ -53,8 +53,8 @@ using namespace PBD;
 
 namespace ARDOUR {
 	namespace Properties {
-		PBD::PropertyDescriptor<Evoral::Beats> start_beats;
-		PBD::PropertyDescriptor<Evoral::Beats> length_beats;
+		PBD::PropertyDescriptor<double> start_beats;
+		PBD::PropertyDescriptor<double> length_beats;
 	}
 }
 
@@ -77,8 +77,8 @@ MidiRegion::register_properties ()
 /* Basic MidiRegion constructor (many channels) */
 MidiRegion::MidiRegion (const SourceList& srcs)
 	: Region (srcs)
-	, _start_beats (Properties::start_beats, Evoral::Beats())
-	, _length_beats (Properties::length_beats, midi_source(0)->length_beats())
+	, _start_beats (Properties::start_beats, 0.0)
+	, _length_beats (Properties::length_beats, midi_source(0)->length_beats().to_double())
 {
 	register_properties ();
 	midi_source(0)->ModelChanged.connect_same_thread (_source_connection, boost::bind (&MidiRegion::model_changed, this));
@@ -103,10 +103,10 @@ MidiRegion::MidiRegion (boost::shared_ptr<const MidiRegion> other)
 /** Create a new MidiRegion that is part of an existing one */
 MidiRegion::MidiRegion (boost::shared_ptr<const MidiRegion> other, frameoffset_t offset, const int32_t sub_num)
 	: Region (other, offset, sub_num)
-	, _start_beats (Properties::start_beats, Evoral::Beats())
+	, _start_beats (Properties::start_beats, 0.0)
 	, _length_beats (Properties::length_beats, other->_length_beats)
 {
-	_start_beats = Evoral::Beats (_session.tempo_map().exact_qn_at_frame (other->_position + offset, sub_num) - (other->pulse() * 4.0)) + other->_start_beats;
+	_start_beats = (_session.tempo_map().exact_qn_at_frame (other->_position + offset, sub_num) - (other->pulse() * 4.0)) + other->_start_beats;
 
 	update_length_beats (sub_num);
 	register_properties ();
@@ -223,7 +223,7 @@ MidiRegion::post_set (const PropertyChange& pc)
 void
 MidiRegion::set_start_beats_from_start_frames ()
 {
-	_start_beats = Evoral::Beats ((pulse() * 4.0) - _session.tempo_map().quarter_note_at_frame (_position - _start));
+	_start_beats = (pulse() * 4.0) - _session.tempo_map().quarter_note_at_frame (_position - _start);
 }
 
 void
@@ -265,10 +265,10 @@ MidiRegion::update_after_tempo_map_change (bool /* send */)
 		  For now, the musical position at the region start is retained, but subsequent events
 		  will maintain their beat distance according to the map.
 		*/
-		_start = _position - _session.tempo_map().frame_at_pulse (pulse() - (_start_beats.val().to_double() / 4.0));
+		_start = _position - _session.tempo_map().frame_at_pulse (pulse() - (_start_beats / 4.0));
 
 		/* _length doesn't change for audio-locked regions. update length_beats to match. */
-		_length_beats = Evoral::Beats (_session.tempo_map().quarter_note_at_frame (_position + _length) - _session.tempo_map().quarter_note_at_frame (_position));
+		_length_beats = _session.tempo_map().quarter_note_at_frame (_position + _length) - _session.tempo_map().quarter_note_at_frame (_position);
 
 		s_and_l.add (Properties::start);
 		s_and_l.add (Properties::length_beats);
@@ -280,7 +280,7 @@ MidiRegion::update_after_tempo_map_change (bool /* send */)
 	Region::update_after_tempo_map_change (false);
 
 	/* _start has now been updated. */
-	_length = _session.tempo_map().frame_at_pulse (pulse() + (_length_beats.val().to_double() / 4.0)) - _position;
+	_length = _session.tempo_map().frame_at_pulse (pulse() + (_length_beats / 4.0)) - _position;
 
 	if (old_start != _start) {
 		s_and_l.add (Properties::start);
@@ -298,7 +298,7 @@ MidiRegion::update_after_tempo_map_change (bool /* send */)
 void
 MidiRegion::update_length_beats (const int32_t sub_num)
 {
-	_length_beats = Evoral::Beats (_session.tempo_map().exact_qn_at_frame (_position + _length, sub_num) - (pulse() * 4.0));
+	_length_beats = _session.tempo_map().exact_qn_at_frame (_position + _length, sub_num) - (pulse() * 4.0);
 }
 
 void
@@ -312,20 +312,20 @@ MidiRegion::set_position_internal (framepos_t pos, bool allow_bbt_recompute, con
 	}
 
 	/* set _start to new position in tempo map */
-	_start = _position - _session.tempo_map().frame_at_pulse (pulse() - (_start_beats.val().to_double() / 4.0));
+	_start = _position - _session.tempo_map().frame_at_pulse (pulse() - (_start_beats / 4.0));
 
 	/* in construction from src */
-	if (_length_beats == Evoral::Beats()) {
+	if (_length_beats == 0.0) {
 		update_length_beats (sub_num);
 	}
 
 	if (position_lock_style() == AudioTime) {
-		_length_beats = Evoral::Beats (_session.tempo_map().quarter_note_at_frame (_position + _length) - _session.tempo_map().quarter_note_at_frame (_position));
+		_length_beats = _session.tempo_map().quarter_note_at_frame (_position + _length) - _session.tempo_map().quarter_note_at_frame (_position);
 	} else {
 		/* leave _length_beats alone, and change _length to reflect the state of things
 		   at the new position (tempo map may dictate a different number of frames).
 		*/
-		Region::set_length_internal (_session.tempo_map().frame_at_pulse (pulse() + (_length_beats.val().to_double() / 4.0)) - _position, sub_num);
+		Region::set_length_internal (_session.tempo_map().frame_at_pulse (pulse() + (_length_beats / 4.0)) - _position, sub_num);
 	}
 }
 
@@ -425,7 +425,7 @@ MidiRegion::_read_at (const SourceList&              /*srcs*/,
 		    filter,
 		    _filtered_parameters,
 		    pulse(),
-		    _start_beats.val().to_double()
+		    _start_beats
 		    ) != to_read) {
 		return 0; /* "read nothing" */
 	}
@@ -591,7 +591,7 @@ MidiRegion::fix_negative_start ()
 
 	model()->insert_silence_at_start (c.from (-_start));
 	_start = 0;
-	_start_beats = Evoral::Beats();
+	_start_beats = 0.0;
 }
 
 void
@@ -630,16 +630,14 @@ MidiRegion::trim_to_internal (framepos_t position, framecnt_t length, const int3
 		set_position_internal (position, true, sub_num);
 		what_changed.add (Properties::position);
 
-		double new_start_qn = start_beats().to_double() + (pos_qn - old_pos_qn);
+		double new_start_qn = start_beats() + (pos_qn - old_pos_qn);
 		const framepos_t new_start = _position - _session.tempo_map().frame_at_quarter_note (pos_qn - new_start_qn);
 
 		if (!verify_start_and_length (new_start, length)) {
 			return;
 		}
 
-		/* at small deltas, (high zooms) the property will not change without this (tick resolution of Beats::operator!=)*/
-		_start_beats += Evoral::Beats (new_start_qn) + start_beats().tick() * 2.0;
-		_start_beats = Evoral::Beats (new_start_qn);
+		_start_beats = new_start_qn;
 		what_changed.add (Properties::start_beats);
 
 		set_start_internal (new_start, sub_num);
diff --git a/scripts/_vamp_audio_to_midi.lua b/scripts/_vamp_audio_to_midi.lua
index cf9b82c851..6af21c241f 100644
--- a/scripts/_vamp_audio_to_midi.lua
+++ b/scripts/_vamp_audio_to_midi.lua
@@ -17,7 +17,7 @@ function factory () return function ()
 	assert (ar and mr)
 
 	local a_off = ar:position ()
-	local b_off = 4.0 * mr:pulse () - mr:start_beats ():to_double ()
+	local b_off = 4.0 * mr:pulse () - mr:start_beats ()
 
 	vamp:analyze (ar:to_readable (), 0, nil)
 	local fl = vamp:plugin ():getRemainingFeatures ():at (0)
diff --git a/session_utils/fix_bbtppq.cc b/session_utils/fix_bbtppq.cc
index 0b060b5d63..8dce59c35d 100644
--- a/session_utils/fix_bbtppq.cc
+++ b/session_utils/fix_bbtppq.cc
@@ -135,7 +135,7 @@ ensure_per_region_source (Session* session, boost::shared_ptr<MidiRegion> region
 
 		Source::Lock newsrc_lock (newsrc->mutex());
 
-		write_bbt_source_to_source (region->midi_source(0), newsrc, newsrc_lock, region->pulse() - (region->start_beats().to_double() / 4.0));
+		write_bbt_source_to_source (region->midi_source(0), newsrc, newsrc_lock, region->pulse() - (region->start_beats() / 4.0));
 
 		cout << UTILNAME << ":" << endl
 		     << " Created new midi source file" << endl
@@ -189,7 +189,7 @@ ensure_per_source_source (Session* session, boost::shared_ptr<MidiRegion> region
 
 		Source::Lock newsrc_lock (newsrc->mutex());
 
-		write_bbt_source_to_source (region->midi_source(0), newsrc, newsrc_lock, region->pulse() - (region->start_beats().to_double() / 4.0));
+		write_bbt_source_to_source (region->midi_source(0), newsrc, newsrc_lock, region->pulse() - (region->start_beats() / 4.0));
 
 		cout << UTILNAME << ":" << endl
 		     << " Created new midi source file" << endl
@@ -206,7 +206,7 @@ reset_start (Session* session, boost::shared_ptr<MidiRegion> region)
 {
 	/* set start_beats to quarter note value from incorrect bbt*/
 	TempoMap& tmap (session->tempo_map());
-	double new_start_qn = (tmap.pulse_at_beat (region->beat()) - tmap.pulse_at_beat (region->beat() - region->start_beats().to_double())) * 4.0;
+	double new_start_qn = (tmap.pulse_at_beat (region->beat()) - tmap.pulse_at_beat (region->beat() - region->start_beats())) * 4.0;
 
 	/* force a change to start and start_beats */
 	PositionLockStyle old_pls = region->position_lock_style();
@@ -222,7 +222,7 @@ reset_length (Session* session, boost::shared_ptr<MidiRegion> region)
 {
 	/* set length_beats to quarter note value */
 	TempoMap& tmap (session->tempo_map());
-	double new_length_qn = (tmap.pulse_at_beat (region->beat() + region->length_beats().to_double())
+	double new_length_qn = (tmap.pulse_at_beat (region->beat() + region->length_beats())
 				  - tmap.pulse_at_beat (region->beat())) * 4.0;
 
 	/* force a change to length and length_beats */