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livetrax/gtk2_ardour/editor_timefx.cc

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/*
Copyright (C) 2000 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 <iostream>
#include <cstdlib>
#include <cmath>
#include <ctime>
#include <string>
#include <set>
#include "pbd/error.h"
#include "pbd/pthread_utils.h"
#include "pbd/memento_command.h"
#include "pbd/stateful_diff_command.h"
#include <gtkmm2ext/utils.h>
#include "audio_region_view.h"
#include "audio_time_axis.h"
#include "editor.h"
#include "region_selection.h"
#include "time_fx_dialog.h"
#include "ardour/session.h"
#include "ardour/region.h"
#include "ardour/audioplaylist.h"
#include "ardour/audio_track.h"
#include "ardour/audioregion.h"
#include "ardour/stretch.h"
#include "ardour/midi_stretch.h"
#include "ardour/pitch.h"
#ifdef USE_RUBBERBAND
#include "rubberband/RubberBandStretcher.h"
using namespace RubberBand;
#endif
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Gtk;
using namespace Gtkmm2ext;
/** @return -1 in case of error, 1 if operation was cancelled by the user, 0 if everything went ok */
int
Editor::time_stretch (RegionSelection& regions, float fraction)
{
RegionList audio;
RegionList midi;
int aret;
begin_reversible_command (_("stretch/shrink"));
for (RegionSelection::iterator i = regions.begin(); i != regions.end(); ++i) {
if ((*i)->region()->data_type() == DataType::AUDIO) {
audio.push_back ((*i)->region());
} else if ((*i)->region()->data_type() == DataType::MIDI) {
midi.push_back ((*i)->region());
}
}
if ((aret = time_fx (audio, fraction, false)) != 0) {
return aret;
}
set<boost::shared_ptr<Playlist> > midi_playlists_affected;
for (RegionList::iterator i = midi.begin(); i != midi.end(); ++i) {
boost::shared_ptr<Playlist> playlist = (*i)->playlist();
if (playlist) {
playlist->clear_changes ();
}
}
ARDOUR::TimeFXRequest request;
request.time_fraction = fraction;
for (RegionList::iterator i = midi.begin(); i != midi.end(); ++i) {
boost::shared_ptr<Playlist> playlist = (*i)->playlist();
if (!playlist) {
continue;
}
MidiStretch stretch (*_session, request);
stretch.run (*i);
playlist->replace_region (regions.front()->region(), stretch.results[0],
regions.front()->region()->position());
midi_playlists_affected.insert (playlist);
}
for (set<boost::shared_ptr<Playlist> >::iterator p = midi_playlists_affected.begin(); p != midi_playlists_affected.end(); ++p) {
_session->add_command (new StatefulDiffCommand (*p));
}
commit_reversible_command ();
return 0;
}
int
Editor::pitch_shift (RegionSelection& regions, float fraction)
{
RegionList rl;
for (RegionSelection::iterator i = regions.begin(); i != regions.end(); ++i) {
rl.push_back ((*i)->region());
}
begin_reversible_command (_("pitch shift"));
int ret = time_fx (rl, fraction, true);
if (ret == 0) {
commit_reversible_command ();
}
return ret;
}
/** @param val Percentage to time stretch by; ignored if pitch-shifting.
* @param pitching true to pitch shift, false to time stretch.
* @return -1 in case of error, 1 if operation was cancelled by the user, 0 if everything went ok */
int
Editor::time_fx (RegionList& regions, float val, bool pitching)
{
delete current_timefx;
current_timefx = new TimeFXDialog (*this, pitching);
current_timefx->regions = regions;
/* See if we have any audio regions on our list */
RegionList::iterator i = regions.begin ();
while (i != regions.end() && boost::dynamic_pointer_cast<AudioRegion> (*i) == 0) {
++i;
}
if (i == regions.end ()) {
/* No audio regions; we can just do the timefx without a dialogue */
do_timefx ();
return 0;
}
switch (current_timefx->run ()) {
case RESPONSE_ACCEPT:
break;
default:
current_timefx->hide ();
return 1;
}
current_timefx->status = 0;
if (pitching) {
float cents = current_timefx->pitch_octave_adjustment.get_value() * 1200.0;
float pitch_fraction;
cents += current_timefx->pitch_semitone_adjustment.get_value() * 100.0;
cents += current_timefx->pitch_cent_adjustment.get_value();
if (cents == 0.0) {
// user didn't change anything
current_timefx->hide ();
return 0;
}
// one octave == 1200 cents
// adding one octave doubles the frequency
// ratio is 2^^octaves
pitch_fraction = pow(2, cents/1200);
current_timefx->request.time_fraction = 1.0;
current_timefx->request.pitch_fraction = pitch_fraction;
} else {
current_timefx->request.time_fraction = val;
current_timefx->request.pitch_fraction = 1.0;
}
#ifdef USE_RUBBERBAND
/* parse options */
RubberBandStretcher::Options options = 0;
bool realtime = false;
bool precise = false;
bool peaklock = true;
bool longwin = false;
bool shortwin = false;
bool preserve_formants = false;
string txt;
enum {
NoTransients,
BandLimitedTransients,
Transients
} transients = Transients;
precise = current_timefx->precise_button.get_active();
preserve_formants = current_timefx->preserve_formants_button.get_active();
txt = current_timefx->stretch_opts_selector.get_active_text ();
for (int i = 0; i <= 6; i++) {
if (txt == rb_opt_strings[i]) {
rb_current_opt = i;
break;
}
}
switch (rb_current_opt) {
case 0:
transients = NoTransients; peaklock = false; longwin = true; shortwin = false;
break;
case 1:
transients = NoTransients; peaklock = false; longwin = false; shortwin = false;
break;
case 2:
transients = NoTransients; peaklock = true; longwin = false; shortwin = false;
break;
case 3:
transients = BandLimitedTransients; peaklock = true; longwin = false; shortwin = false;
break;
case 5:
transients = Transients; peaklock = false; longwin = false; shortwin = true;
break;
case 6:
transients = NoTransients;
precise = true;
preserve_formants = false;
current_timefx->request.pitch_fraction = 1/val;
shortwin = true;
// peaklock = false;
break;
default:
/* default/4 */
transients = Transients; peaklock = true; longwin = false; shortwin = false;
break;
};
if (realtime) options |= RubberBandStretcher::OptionProcessRealTime;
if (precise) options |= RubberBandStretcher::OptionStretchPrecise;
if (preserve_formants) options |= RubberBandStretcher::OptionFormantPreserved;
if (!peaklock) options |= RubberBandStretcher::OptionPhaseIndependent;
if (longwin) options |= RubberBandStretcher::OptionWindowLong;
if (shortwin) options |= RubberBandStretcher::OptionWindowShort;
switch (transients) {
case NoTransients:
options |= RubberBandStretcher::OptionTransientsSmooth;
break;
case BandLimitedTransients:
options |= RubberBandStretcher::OptionTransientsMixed;
break;
case Transients:
options |= RubberBandStretcher::OptionTransientsCrisp;
break;
}
current_timefx->request.opts = (int) options;
#else
current_timefx->request.quick_seek = current_timefx->quick_button.get_active();
current_timefx->request.antialias = !current_timefx->antialias_button.get_active();
#endif
current_timefx->request.done = false;
current_timefx->request.cancel = false;
/* re-connect the cancel button and delete events */
current_timefx->first_cancel.disconnect();
current_timefx->first_delete.disconnect();
current_timefx->first_cancel = current_timefx->cancel_button->signal_clicked().connect
(sigc::mem_fun (current_timefx, &TimeFXDialog::cancel_in_progress));
current_timefx->first_delete = current_timefx->signal_delete_event().connect
(sigc::mem_fun (current_timefx, &TimeFXDialog::delete_in_progress));
if (pthread_create_and_store ("timefx", &current_timefx->request.thread, timefx_thread, current_timefx)) {
current_timefx->hide ();
error << _("timefx cannot be started - thread creation error") << endmsg;
return -1;
}
pthread_detach (current_timefx->request.thread);
while (!current_timefx->request.done && !current_timefx->request.cancel) {
gtk_main_iteration ();
}
current_timefx->hide ();
return current_timefx->status;
}
void
Editor::do_timefx ()
{
boost::shared_ptr<Playlist> playlist;
boost::shared_ptr<Region> new_region;
set<boost::shared_ptr<Playlist> > playlists_affected;
uint32_t const N = current_timefx->regions.size ();
for (RegionList::iterator i = current_timefx->regions.begin(); i != current_timefx->regions.end(); ++i) {
boost::shared_ptr<Playlist> playlist = (*i)->playlist();
if (playlist) {
playlist->clear_changes ();
}
}
for (RegionList::iterator i = current_timefx->regions.begin(); i != current_timefx->regions.end(); ++i) {
boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (*i);
if (!region || (playlist = region->playlist()) == 0) {
continue;
}
if (current_timefx->request.cancel) {
/* we were cancelled */
/* XXX what to do about playlists already affected ? */
current_timefx->status = 1;
return;
}
Filter* fx;
if (current_timefx->pitching) {
fx = new Pitch (*_session, current_timefx->request);
} else {
#ifdef USE_RUBBERBAND
fx = new RBStretch (*_session, current_timefx->request);
#else
fx = new STStretch (*_session, current_timefx->request);
#endif
}
current_timefx->descend (1.0 / N);
if (fx->run (region, current_timefx)) {
current_timefx->status = -1;
current_timefx->request.done = true;
delete fx;
return;
}
if (!fx->results.empty()) {
new_region = fx->results.front();
playlist->replace_region (region, new_region, region->position());
playlists_affected.insert (playlist);
}
current_timefx->ascend ();
delete fx;
}
for (set<boost::shared_ptr<Playlist> >::iterator p = playlists_affected.begin(); p != playlists_affected.end(); ++p) {
_session->add_command (new StatefulDiffCommand (*p));
}
current_timefx->status = 0;
current_timefx->request.done = true;
}
void*
Editor::timefx_thread (void *arg)
{
SessionEvent::create_per_thread_pool ("timefx events", 64);
TimeFXDialog* tsd = static_cast<TimeFXDialog*>(arg);
pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
tsd->editor.do_timefx ();
/* GACK! HACK! sleep for a bit so that our request buffer for the GUI
event loop doesn't die before any changes we made are processed
by the GUI ...
*/
struct timespec t = { 2, 0 };
nanosleep (&t, 0);
return 0;
}