2 Copyright (C) 2003 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.
24 #include <pbd/basename.h>
26 #include <soundtouch/SoundTouch.h>
28 #include <ardour/session.h>
29 #include <ardour/audioregion.h>
30 #include <ardour/sndfilesource.h>
31 #include <ardour/region_factory.h>
32 #include <ardour/source_factory.h>
37 using namespace ARDOUR;
39 using namespace soundtouch;
41 boost::shared_ptr<AudioRegion>
42 Session::tempoize_region (TimeStretchRequest& tsr)
45 SourceList::iterator it;
46 boost::shared_ptr<AudioRegion> r;
49 string ident = X_("-TIMEFX-");
51 nframes_t total_frames;
54 /* the soundtouch code wants a *tempo* change percentage, which is
55 of opposite sign to the length change.
58 percentage = -tsr.fraction;
60 st.setSampleRate (frame_rate());
62 st.setTempoChange (percentage);
63 st.setPitchSemiTones (0);
66 st.setSetting(SETTING_USE_QUICKSEEK, tsr.quick_seek);
67 st.setSetting(SETTING_USE_AA_FILTER, tsr.antialias);
69 vector<string> names = tsr.region->master_source_names();
72 total_frames = tsr.region->length() * tsr.region->n_channels();
75 for (uint32_t i = 0; i < tsr.region->n_channels(); ++i) {
76 string path = path_from_region_name (PBD::basename_nosuffix (names[i]), ident);
78 if (path.length() == 0) {
79 error << string_compose (_("tempoize: error creating name for new audio file based on %1"), tsr.region->name())
85 sources.push_back (boost::dynamic_pointer_cast<AudioFileSource> (SourceFactory::createWritable (*this, path, false, frame_rate())));
87 } catch (failed_constructor& err) {
88 error << string_compose (_("tempoize: error creating new audio file %1 (%2)"), path, strerror (errno)) << endmsg;
94 const nframes_t bufsize = 16384;
96 for (uint32_t i = 0; i < sources.size(); ++i) {
97 gain_t gain_buffer[bufsize];
98 Sample buffer[bufsize];
100 nframes_t this_read = 0;
103 while (tsr.running && pos < tsr.region->length()) {
106 this_time = min (bufsize, tsr.region->length() - pos);
108 /* read from the master (original) sources for the region,
109 not the ones currently in use, in case it's already been
110 subject to timefx. */
112 if ((this_read = tsr.region->master_read_at (buffer, buffer, gain_buffer, pos + tsr.region->position(), this_time)) != this_time) {
113 error << string_compose (_("tempoize: error reading data from %1"), sources[i]->name()) << endmsg;
120 tsr.progress = (float) done / total_frames;
122 st.putSamples (buffer, this_read);
124 while ((this_read = st.receiveSamples (buffer, bufsize)) > 0 && tsr.running) {
125 if (sources[i]->write (buffer, this_read) != this_read) {
126 error << string_compose (_("error writing tempo-adjusted data to %1"), sources[i]->name()) << endmsg;
136 while (tsr.running && (this_read = st.receiveSamples (buffer, bufsize)) > 0) {
137 if (sources[i]->write (buffer, this_read) != this_read) {
138 error << string_compose (_("error writing tempo-adjusted data to %1"), sources[i]->name()) << endmsg;
143 } catch (runtime_error& err) {
144 error << _("timefx code failure. please notify ardour-developers.") << endmsg;
145 error << err.what() << endmsg;
152 xnow = localtime (&now);
154 for (it = sources.begin(); it != sources.end(); ++it) {
155 boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(*it);
157 afs->update_header (tsr.region->position(), *xnow, now);
161 region_name = tsr.region->name() + X_(".t");
163 r = (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (sources, 0, sources.front()->length(), region_name,
164 0, AudioRegion::Flag (AudioRegion::DefaultFlags | AudioRegion::WholeFile))));
168 if (sources.size()) {
170 /* if we failed to complete for any reason, mark the new file
174 if ((!r || !tsr.running)) {
175 for (it = sources.begin(); it != sources.end(); ++it) {
176 (*it)->mark_for_remove ();
183 /* if the process was cancelled, delete the region */