7ff370e798
git-svn-id: svn://localhost/ardour2/branches/undo@638 d708f5d6-7413-0410-9779-e7cbd77b26cf
195 lines
5.2 KiB
C++
195 lines
5.2 KiB
C++
/*
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Copyright (C) 2003 Paul Davis
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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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$Id$
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*/
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#include <cerrno>
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#include <stdexcept>
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#include <pbd/basename.h>
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#include <soundtouch/SoundTouch.h>
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#include <ardour/session.h>
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#include <ardour/audioregion.h>
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#include <ardour/sndfilesource.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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using namespace soundtouch;
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AudioRegion*
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Session::tempoize_region (TimeStretchRequest& tsr)
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{
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AudioRegion::SourceList sources;
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AudioRegion::SourceList::iterator it;
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AudioRegion* r = 0;
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SoundTouch st;
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string region_name;
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string ident = X_("-TIMEFX-");
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float percentage;
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jack_nframes_t total_frames;
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jack_nframes_t done;
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/* the soundtouch code wants a *tempo* change percentage, which is
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of opposite sign to the length change.
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*/
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percentage = -tsr.fraction;
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st.setSampleRate (frame_rate());
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st.setChannels (1);
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st.setTempoChange (percentage);
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st.setPitchSemiTones (0);
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st.setRateChange (0);
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st.setSetting(SETTING_USE_QUICKSEEK, tsr.quick_seek);
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st.setSetting(SETTING_USE_AA_FILTER, tsr.antialias);
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vector<string> names = tsr.region->master_source_names();
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tsr.progress = 0.0f;
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total_frames = tsr.region->length() * tsr.region->n_channels();
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done = 0;
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for (uint32_t i = 0; i < tsr.region->n_channels(); ++i) {
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string path = path_from_region_name (PBD::basename_nosuffix (names[i]), ident);
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if (path.length() == 0) {
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error << string_compose (_("tempoize: error creating name for new audio file based on %1"), tsr.region->name())
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<< endmsg;
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goto out;
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}
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try {
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sources.push_back (new SndFileSource (path,
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Config->get_native_file_data_format(),
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Config->get_native_file_header_format(),
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frame_rate()));
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} catch (failed_constructor& err) {
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error << string_compose (_("tempoize: error creating new audio file %1 (%2)"), path, strerror (errno)) << endmsg;
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goto out;
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}
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}
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try {
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const jack_nframes_t bufsize = 16384;
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for (uint32_t i = 0; i < sources.size(); ++i) {
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gain_t gain_buffer[bufsize];
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Sample buffer[bufsize];
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char workbuf[bufsize*4];
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jack_nframes_t pos = 0;
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jack_nframes_t this_read = 0;
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st.clear();
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while (tsr.running && pos < tsr.region->length()) {
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jack_nframes_t this_time;
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this_time = min (bufsize, tsr.region->length() - pos);
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/* read from the master (original) sources for the region,
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not the ones currently in use, in case it's already been
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subject to timefx. */
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if ((this_read = tsr.region->master_read_at (buffer, buffer, gain_buffer, workbuf, pos + tsr.region->position(), this_time)) != this_time) {
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error << string_compose (_("tempoize: error reading data from %1"), sources[i]->name()) << endmsg;
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goto out;
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}
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pos += this_read;
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done += this_read;
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tsr.progress = (float) done / total_frames;
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st.putSamples (buffer, this_read);
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while ((this_read = st.receiveSamples (buffer, bufsize)) > 0 && tsr.running) {
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if (sources[i]->write (buffer, this_read, workbuf) != this_read) {
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error << string_compose (_("error writing tempo-adjusted data to %1"), sources[i]->name()) << endmsg;
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goto out;
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}
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}
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}
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if (tsr.running) {
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st.flush ();
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}
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while (tsr.running && (this_read = st.receiveSamples (buffer, bufsize)) > 0) {
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if (sources[i]->write (buffer, this_read, workbuf) != this_read) {
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error << string_compose (_("error writing tempo-adjusted data to %1"), sources[i]->name()) << endmsg;
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goto out;
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}
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}
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}
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} catch (runtime_error& err) {
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error << _("timefx code failure. please notify ardour-developers.") << endmsg;
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error << err.what() << endmsg;
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goto out;
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}
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time_t now;
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struct tm* xnow;
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time (&now);
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xnow = localtime (&now);
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for (it = sources.begin(); it != sources.end(); ++it) {
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AudioFileSource* afs = dynamic_cast<AudioFileSource*>(*it);
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if (afs) {
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afs->update_header (tsr.region->position(), *xnow, now);
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}
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}
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region_name = tsr.region->name() + X_(".t");
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r = new AudioRegion (sources, 0, sources.front()->length(), region_name,
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0, AudioRegion::Flag (AudioRegion::DefaultFlags | AudioRegion::WholeFile));
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out:
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if (sources.size()) {
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/* if we failed to complete for any reason, mark the new file
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for deletion.
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*/
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if ((r == 0 || !tsr.running)) {
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for (it = sources.begin(); it != sources.end(); ++it) {
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(*it)->mark_for_remove ();
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delete *it;
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}
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}
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}
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/* if the process was cancelled, delete the region */
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if (!tsr.running) {
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if (r) {
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delete r;
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r = 0;
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}
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}
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return r;
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}
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