rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 85 insertions, 0 deletions

diff --git a/libs/ardour/quantize.cc b/libs/ardour/quantize.cc
new file mode 100644
index 0000000000..ccbda9711a
--- /dev/null
+++ b/libs/ardour/quantize.cc
@@ -0,0 +1,85 @@
+/*
+    Copyright (C) 2004 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
+    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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <pbd/basename.h>
+
+#include <ardour/types.h>
+#include <ardour/quantize.h>
+#include <ardour/session.h>
+#include <ardour/smf_source.h>
+#include <ardour/midi_region.h>
+#include <ardour/tempo.h>
+
+#include "i18n.h"
+
+using namespace std;
+using namespace ARDOUR;
+
+
+/** Quantize notes, valid for MIDI regions only.
+ *
+ * Q is the quantize value in beats, ie 1.0 = quantize to beats,
+ * 0.25 = quantize to beats/4, etc.
+ */
+Quantize::Quantize (Session& s, double q)
+	: Filter (s)
+	, _q(q)
+{
+}
+
+Quantize::~Quantize ()
+{
+}
+
+int
+Quantize::run (boost::shared_ptr<Region> r)
+{
+	boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(r);
+	if (!region)
+		return -1;
+
+	// FIXME: how to make a whole file region if it isn't?
+	//assert(region->whole_file());
+
+	boost::shared_ptr<MidiSource> src = region->midi_source(0);
+	src->load_model();
+
+	boost::shared_ptr<MidiModel> model = src->model();
+	
+	// FIXME: Model really needs to be switched to beat time (double) ASAP
+	
+	const Tempo& t = session.tempo_map().tempo_at(r->start());
+	const Meter& m = session.tempo_map().meter_at(r->start());
+
+	double q_frames = _q * (m.frames_per_bar(t, session.frame_rate()) / (double)m.beats_per_bar());
+
+	for (MidiModel::Notes::iterator i = model->notes().begin(); i != model->notes().end(); ++i) {
+		const double new_time = lrint((*i)->time() / q_frames) * q_frames;
+		double new_dur = lrint((*i)->duration() / q_frames) * q_frames;
+		if (new_dur == 0.0)
+			new_dur = q_frames;
+		
+		(*i)->set_time(new_time);
+		(*i)->set_duration(new_dur);
+	}
+
+	model->set_edited(true);
+
+	return 0;
+}