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997e4b1f9c
git-svn-id: svn://localhost/ardour2/branches/3.0@3152 d708f5d6-7413-0410-9779-e7cbd77b26cf
298 lines
6.8 KiB
C++
298 lines
6.8 KiB
C++
/*
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Copyright (C) 2004-2007 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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*/
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#include <algorithm>
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#include <cmath>
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#include <pbd/error.h>
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#include <rubberband/RubberBandStretcher.h>
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#include <ardour/types.h>
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#include <ardour/stretch.h>
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#include <ardour/pitch.h>
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#include <ardour/audiofilesource.h>
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#include <ardour/session.h>
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#include <ardour/audioregion.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 RubberBand;
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Pitch::Pitch (Session& s, TimeFXRequest& req)
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: RBEffect (s, req)
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{
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}
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Stretch::Stretch (Session& s, TimeFXRequest& req)
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: RBEffect (s, req)
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{
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}
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RBEffect::RBEffect (Session& s, TimeFXRequest& req)
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: Filter (s)
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, tsr (req)
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{
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tsr.progress = 0.0f;
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}
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RBEffect::~RBEffect ()
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{
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}
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int
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RBEffect::run (boost::shared_ptr<AudioRegion> region)
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{
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SourceList nsrcs;
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nframes_t done;
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int ret = -1;
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const nframes_t bufsize = 256;
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gain_t* gain_buffer = 0;
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Sample** buffers = 0;
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char suffix[32];
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string new_name;
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string::size_type at;
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nframes_t pos = 0;
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int avail = 0;
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// note: this_time_fraction is a ratio of original length. 1.0 = no change,
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// 0.5 is half as long, 2.0 is twice as long, etc.
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double this_time_fraction = tsr.time_fraction * region->stretch ();
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double this_pitch_fraction = tsr.pitch_fraction * region->shift ();
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RubberBandStretcher stretcher (session.frame_rate(), region->n_channels(),
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(RubberBandStretcher::Options) tsr.opts,
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this_time_fraction, this_pitch_fraction);
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tsr.progress = 0.0f;
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tsr.done = false;
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uint32_t channels = region->n_channels();
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nframes_t duration = region->ancestral_length();
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stretcher.setExpectedInputDuration(duration);
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stretcher.setDebugLevel(1);
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/* the name doesn't need to be super-precise, but allow for 2 fractional
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digits just to disambiguate close but not identical FX
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*/
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if (this_time_fraction == 1.0) {
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snprintf (suffix, sizeof (suffix), "@%d", (int) floor (this_pitch_fraction * 100.0f));
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} else if (this_pitch_fraction == 1.0) {
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snprintf (suffix, sizeof (suffix), "@%d", (int) floor (this_time_fraction * 100.0f));
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} else {
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snprintf (suffix, sizeof (suffix), "@%d-%d",
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(int) floor (this_time_fraction * 100.0f),
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(int) floor (this_pitch_fraction * 100.0f));
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}
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/* create new sources */
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if (make_new_sources (region, nsrcs, suffix)) {
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goto out;
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}
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gain_buffer = new gain_t[bufsize];
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buffers = new float *[channels];
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for (uint32_t i = 0; i < channels; ++i) {
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buffers[i] = new float[bufsize];
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}
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/* we 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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/* study first, process afterwards. */
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pos = 0;
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avail = 0;
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done = 0;
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try {
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while (pos < duration && !tsr.cancel) {
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nframes_t this_read = 0;
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for (uint32_t i = 0; i < channels; ++i) {
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this_read = 0;
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nframes_t this_time;
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this_time = min(bufsize, duration - pos);
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this_read = region->master_read_at
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(buffers[i],
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buffers[i],
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gain_buffer,
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pos + region->position(),
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this_time,
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i);
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if (this_read != this_time) {
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error << string_compose
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(_("tempoize: error reading data from %1 at %2 (wanted %3, got %4)"),
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region->name(), pos + region->position(), this_time, this_read) << endmsg;
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goto out;
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}
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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 / duration) * 0.25;
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stretcher.study(buffers, this_read, pos == duration);
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}
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done = 0;
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pos = 0;
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while (pos < duration && !tsr.cancel) {
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nframes_t this_read = 0;
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for (uint32_t i = 0; i < channels; ++i) {
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this_read = 0;
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nframes_t this_time;
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this_time = min(bufsize, duration - pos);
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this_read = region->master_read_at
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(buffers[i],
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buffers[i],
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gain_buffer,
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pos + region->position(),
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this_time,
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i);
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if (this_read != this_time) {
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error << string_compose
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(_("tempoize: error reading data from %1 at %2 (wanted %3, got %4)"),
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region->name(), pos + region->position(), this_time, this_read) << endmsg;
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goto out;
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}
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}
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pos += this_read;
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done += this_read;
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tsr.progress = 0.25 + ((float) done / duration) * 0.75;
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stretcher.process(buffers, this_read, pos == duration);
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int avail = 0;
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while ((avail = stretcher.available()) > 0) {
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this_read = min(bufsize, uint32_t(avail));
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stretcher.retrieve(buffers, this_read);
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for (uint32_t i = 0; i < nsrcs.size(); ++i) {
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if (nsrcs[i]->write(buffers[i], this_read) !=
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this_read) {
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error << string_compose (_("error writing tempo-adjusted data to %1"), nsrcs[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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}
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while ((avail = stretcher.available()) >= 0) {
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uint32_t this_read = min(bufsize, uint32_t(avail));
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stretcher.retrieve(buffers, this_read);
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for (uint32_t i = 0; i < nsrcs.size(); ++i) {
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if (nsrcs[i]->write(buffers[i], this_read) !=
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this_read) {
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error << string_compose (_("error writing tempo-adjusted data to %1"), nsrcs[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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new_name = region->name();
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at = new_name.find ('@');
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// remove any existing stretch indicator
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if (at != string::npos && at > 2) {
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new_name = new_name.substr (0, at - 1);
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}
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new_name += suffix;
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ret = finish (region, nsrcs, new_name);
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/* now reset ancestral data for each new region */
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for (vector<boost::shared_ptr<AudioRegion> >::iterator x = results.begin(); x != results.end(); ++x) {
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(*x)->set_ancestral_data (region->ancestral_start(),
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region->ancestral_length(),
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this_time_fraction,
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this_pitch_fraction );
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(*x)->set_master_sources (region->get_master_sources());
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}
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out:
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if (gain_buffer) {
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delete [] gain_buffer;
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}
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if (buffers) {
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for (uint32_t i = 0; i < channels; ++i) {
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delete buffers[i];
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}
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delete [] buffers;
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}
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if (ret || tsr.cancel) {
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for (SourceList::iterator si = nsrcs.begin(); si != nsrcs.end(); ++si) {
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(*si)->mark_for_remove ();
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}
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}
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tsr.done = true;
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return ret;
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}
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