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/*
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;
const double new_dur = ((i->time() != 0 && new_dur < (q_frames * 1.5))
? q_frames
: lrint(i->duration() / q_frames) * q_frames);
i->set_time(new_time);
i->set_duration(new_dur);
}
model->set_edited(true);
return 0;
#if 0
SourceList nsrcs;
SourceList::iterator si;
nframes_t blocksize = 256 * 1024;
Sample* buf = 0;
nframes_t fpos;
nframes_t fstart;
nframes_t to_read;
int ret = -1;
boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(r);
if (!region)
return ret;
/* create new sources */
if (make_new_sources (region, nsrcs)) {
goto out;
}
fstart = region->start();
if (blocksize > region->length()) {
blocksize = region->length();
}
fpos = max (fstart, (fstart + region->length() - blocksize));
buf = new Sample[blocksize];
to_read = blocksize;
/* now read it backwards */
while (to_read) {
uint32_t n;
for (n = 0, si = nsrcs.begin(); n < region->n_channels(); ++n, ++si) {
/* read it in */
if (region->audio_source (n)->read (buf, fpos, to_read) != to_read) {
goto out;
}
/* swap memory order */
for (nframes_t i = 0; i < to_read/2; ++i) {
swap (buf[i],buf[to_read-1-i]);
}
/* write it out */
boost::shared_ptr<AudioSource> asrc(boost::dynamic_pointer_cast<AudioSource>(*si));
if (asrc && asrc->write (buf, to_read) != to_read) {
goto out;
}
}
if (fpos > fstart + blocksize) {
fpos -= to_read;
to_read = blocksize;
} else {
to_read = fpos - fstart;
fpos = fstart;
}
};
ret = finish (region, nsrcs);
out:
if (buf) {
delete [] buf;
}
if (ret) {
for (si = nsrcs.begin(); si != nsrcs.end(); ++si) {
boost::shared_ptr<AudioSource> asrc(boost::dynamic_pointer_cast<AudioSource>(*si));
asrc->mark_for_remove ();
}
}
return ret;
#endif
}
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