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3963d2b0b2
This has 3 main benefits: - All conversion code is in one place (less duplication, potential bugs) - The conversion method can be passed to things that are ignorant of the actual time units involved, information required, etc. (In the future it would be nice to have user selectable tempo/frame time) - It should be relatively simple now to support tempo changes part-way through a MIDI region (at least architecturally speaking) git-svn-id: svn://localhost/ardour2/branches/3.0@4594 d708f5d6-7413-0410-9779-e7cbd77b26cf
79 lines
2 KiB
C++
79 lines
2 KiB
C++
/*
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Copyright (C) 2004 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <pbd/basename.h>
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#include <ardour/types.h>
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#include <ardour/quantize.h>
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#include <ardour/session.h>
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#include <ardour/smf_source.h>
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#include <ardour/midi_region.h>
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#include <ardour/tempo.h>
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#include "i18n.h"
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using namespace std;
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using namespace ARDOUR;
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/** Quantize notes, valid for MIDI regions only.
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*
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* Q is the quantize value in beats, ie 1.0 = quantize to beats,
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* 0.25 = quantize to beats/4, etc.
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*/
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Quantize::Quantize (Session& s, double q)
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: Filter (s)
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, _q(q)
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{
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}
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Quantize::~Quantize ()
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{
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}
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int
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Quantize::run (boost::shared_ptr<Region> r)
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{
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boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(r);
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if (!region)
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return -1;
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// FIXME: how to make a whole file region if it isn't?
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//assert(region->whole_file());
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boost::shared_ptr<MidiSource> src = region->midi_source(0);
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src->load_model();
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boost::shared_ptr<MidiModel> model = src->model();
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for (Evoral::Sequence<MidiModel::TimeType>::Notes::iterator i = model->notes().begin();
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i != model->notes().end(); ++i) {
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const double new_time = lrint((*i)->time() / _q) * _q;
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double new_dur = lrint((*i)->length() / _q) * _q;
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if (new_dur == 0.0)
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new_dur = _q;
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(*i)->set_time(new_time);
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(*i)->set_length(new_dur);
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}
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model->set_edited(true);
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return 0;
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}
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