2 Copyright (C) 2004 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <pbd/basename.h>
22 #include <ardour/types.h>
23 #include <ardour/quantize.h>
24 #include <ardour/session.h>
25 #include <ardour/smf_source.h>
26 #include <ardour/midi_region.h>
27 #include <ardour/tempo.h>
32 using namespace ARDOUR;
35 /** Quantize notes, valid for MIDI regions only.
37 * Q is the quantize value in beats, ie 1.0 = quantize to beats,
38 * 0.25 = quantize to beats/4, etc.
40 Quantize::Quantize (Session& s, double q)
46 Quantize::~Quantize ()
51 Quantize::run (boost::shared_ptr<Region> r)
53 boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(r);
57 // FIXME: how to make a whole file region if it isn't?
58 //assert(region->whole_file());
60 boost::shared_ptr<MidiSource> src = region->midi_source(0);
63 boost::shared_ptr<MidiModel> model = src->model();
65 // FIXME: Model really needs to be switched to beat time (double) ASAP
67 const Tempo& t = session.tempo_map().tempo_at(r->start());
68 const Meter& m = session.tempo_map().meter_at(r->start());
70 double q_frames = _q * (m.frames_per_bar(t, session.frame_rate()) / (double)m.beats_per_bar());
72 for (MidiModel::Notes::iterator i = model->notes().begin(); i != model->notes().end(); ++i) {
73 const double new_time = lrint((*i)->time() / q_frames) * q_frames;
74 const double new_dur = (((*i)->time() != 0 && new_dur < (q_frames * 1.5))
76 : lrint((*i)->duration() / q_frames) * q_frames);
78 (*i)->set_time(new_time);
79 (*i)->set_duration(new_dur);
82 model->set_edited(true);
87 SourceList::iterator si;
88 nframes_t blocksize = 256 * 1024;
95 boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion>(r);
99 /* create new sources */
101 if (make_new_sources (region, nsrcs)) {
105 fstart = region->start();
107 if (blocksize > region->length()) {
108 blocksize = region->length();
111 fpos = max (fstart, (fstart + region->length() - blocksize));
112 buf = new Sample[blocksize];
115 /* now read it backwards */
121 for (n = 0, si = nsrcs.begin(); n < region->n_channels(); ++n, ++si) {
125 if (region->audio_source (n)->read (buf, fpos, to_read) != to_read) {
129 /* swap memory order */
131 for (nframes_t i = 0; i < to_read/2; ++i) {
132 swap (buf[i],buf[to_read-1-i]);
137 boost::shared_ptr<AudioSource> asrc(boost::dynamic_pointer_cast<AudioSource>(*si));
139 if (asrc && asrc->write (buf, to_read) != to_read) {
144 if (fpos > fstart + blocksize) {
148 to_read = fpos - fstart;
153 ret = finish (region, nsrcs);
162 for (si = nsrcs.begin(); si != nsrcs.end(); ++si) {
163 boost::shared_ptr<AudioSource> asrc(boost::dynamic_pointer_cast<AudioSource>(*si));
164 asrc->mark_for_remove ();