David Robillard
fc77ae0738
We really need some kind of more sophisticated assert macro that can be switched to non-fatal logging mode for release builds. A log message, which is often all that would happen, is a lot better than a trainwrecked performance... git-svn-id: svn://localhost/ardour2/branches/3.0@13892 d708f5d6-7413-0410-9779-e7cbd77b26cf
120 lines
3.2 KiB
C++
120 lines
3.2 KiB
C++
/*
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Copyright (C) 2008 Paul Davis
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Author: David Robillard
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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/error.h"
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#include "ardour/midi_model.h"
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#include "ardour/midi_region.h"
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#include "ardour/midi_source.h"
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#include "ardour/midi_stretch.h"
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#include "ardour/types.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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using namespace PBD;
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MidiStretch::MidiStretch (Session& s, const TimeFXRequest& req)
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: Filter (s)
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, _request (req)
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{
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}
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MidiStretch::~MidiStretch ()
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{
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}
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int
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MidiStretch::run (boost::shared_ptr<Region> r, Progress*)
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{
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SourceList nsrcs;
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char suffix[32];
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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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}
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/* the name doesn't need to be super-precise, but allow for 2 fractional
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digits just to disambiguate close but not identical stretches.
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*/
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snprintf (suffix, sizeof (suffix), "@%d", (int) floor (_request.time_fraction * 100.0f));
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string new_name = region->name();
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string::size_type at = new_name.find ('@');
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// remove any existing stretch indicator
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if (at != string::npos && at > 2) {
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new_name = new_name.substr (0, at - 1);
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}
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new_name += suffix;
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/* create new sources */
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if (make_new_sources (region, nsrcs, suffix))
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return -1;
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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> old_model = src->model();
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boost::shared_ptr<MidiSource> new_src = boost::dynamic_pointer_cast<MidiSource>(nsrcs[0]);
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if (!new_src) {
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error << _("MIDI stretch created non-MIDI source") << endmsg;
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return -1;
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}
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Glib::Threads::Mutex::Lock sl (new_src->mutex ());
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new_src->load_model(false, true);
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boost::shared_ptr<MidiModel> new_model = new_src->model();
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new_model->start_write();
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/* Note: pass true into force_discrete for the begin() iterator so that the model doesn't
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* do interpolation of controller data when we stretch.
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*/
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for (Evoral::Sequence<MidiModel::TimeType>::const_iterator i = old_model->begin (0, true);
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i != old_model->end(); ++i) {
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const double new_time = i->time() * _request.time_fraction;
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// FIXME: double copy
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Evoral::Event<MidiModel::TimeType> ev(*i, true);
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ev.set_time(new_time);
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new_model->append(ev, Evoral::next_event_id());
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}
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new_model->end_write (Evoral::Sequence<Evoral::MusicalTime>::DeleteStuckNotes);
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new_model->set_edited (true);
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new_src->copy_interpolation_from (src);
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const int ret = finish (region, nsrcs, new_name);
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results[0]->set_length((framecnt_t) floor (r->length() * _request.time_fraction));
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return ret;
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}
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