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/*
Copyright (C) 2008 Paul Davis
Author: Dave Robillard
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/error.h"
#include "ardour/types.h"
#include "ardour/midi_stretch.h"
#include "ardour/session.h"
#include "ardour/midi_region.h"
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
MidiStretch::MidiStretch (Session& s, TimeFXRequest& req)
: Filter (s)
, _request (req)
{
}
MidiStretch::~MidiStretch ()
{
}
int
MidiStretch::run (boost::shared_ptr<Region> r)
{
SourceList nsrcs;
char suffix[32];
boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(r);
if (!region)
return -1;
/* the name doesn't need to be super-precise, but allow for 2 fractional
digits just to disambiguate close but not identical stretches.
*/
snprintf (suffix, sizeof (suffix), "@%d", (int) floor (_request.time_fraction * 100.0f));
string new_name = region->name();
string::size_type at = new_name.find ('@');
// remove any existing stretch indicator
if (at != string::npos && at > 2) {
new_name = new_name.substr (0, at - 1);
}
new_name += suffix;
/* create new sources */
if (make_new_sources (region, nsrcs, suffix))
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> old_model = src->model();
boost::shared_ptr<MidiSource> new_src = boost::dynamic_pointer_cast<MidiSource>(nsrcs[0]);
assert(new_src);
new_src->load_model(true, true);
boost::shared_ptr<MidiModel> new_model = new_src->model();
new_model->start_write();
for (Evoral::Sequence<MidiModel::TimeType>::const_iterator i = old_model->begin();
i != old_model->end(); ++i) {
const double new_time = i->time() * _request.time_fraction;
// FIXME: double copy
Evoral::Event<MidiModel::TimeType> ev(*i, true);
ev.time() = new_time;
new_model->append(ev);
}
new_model->end_write();
new_model->set_edited(true);
const int ret = finish (region, nsrcs, new_name);
results[0]->set_length((nframes_t) floor (r->length() * _request.time_fraction), NULL);
return ret;
}
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