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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.
$Id$
*/
#include <cstdlib>
#include <cmath>
#include <string>
#include <pbd/error.h>
#include <pbd/pthread_utils.h>
#include <pbd/memento_command.h>
#include "editor.h"
#include "audio_time_axis.h"
#include "audio_region_view.h"
#include "region_selection.h"
#include <ardour/session.h>
#include <ardour/region.h>
#include <ardour/audioplaylist.h>
#include <ardour/audio_track.h>
#include <ardour/audioregion.h>
#include <ardour/audio_diskstream.h>
#include "i18n.h"
using namespace ARDOUR;
using namespace PBD;
using namespace sigc;
using namespace Gtk;
Editor::TimeStretchDialog::TimeStretchDialog (Editor& e)
: ArdourDialog ("time stretch dialog"),
editor (e),
quick_button (_("Quick but Ugly")),
antialias_button (_("Skip Anti-aliasing"))
{
set_modal (true);
set_position (Gtk::WIN_POS_MOUSE);
set_title (_("ardour: timestretch"));
set_name (N_("TimeStretchDialog"));
get_vbox()->set_spacing (5);
get_vbox()->set_border_width (5);
get_vbox()->pack_start (upper_button_box);
get_vbox()->pack_start (progress_bar);
upper_button_box.set_homogeneous (true);
upper_button_box.set_spacing (5);
upper_button_box.set_border_width (5);
upper_button_box.pack_start (quick_button, true, true);
upper_button_box.pack_start (antialias_button, true, true);
action_button = add_button (_("Stretch/Shrink it"), Gtk::RESPONSE_ACCEPT);
cancel_button = add_button (_("Cancel"), Gtk::RESPONSE_CANCEL);
quick_button.set_name (N_("TimeStretchButton"));
antialias_button.set_name (N_("TimeStretchButton"));
progress_bar.set_name (N_("TimeStretchProgress"));
show_all_children ();
}
gint
Editor::TimeStretchDialog::update_progress ()
{
progress_bar.set_fraction (request.progress);
return request.running;
}
void
Editor::TimeStretchDialog::cancel_timestretch_in_progress ()
{
status = -2;
request.running = false;
}
gint
Editor::TimeStretchDialog::delete_timestretch_in_progress (GdkEventAny* ev)
{
status = -2;
request.running = false;
return TRUE;
}
int
Editor::run_timestretch (RegionSelection& regions, float fraction)
{
pthread_t thread;
if (current_timestretch == 0) {
current_timestretch = new TimeStretchDialog (*this);
}
current_timestretch->progress_bar.set_fraction (0.0f);
switch (current_timestretch->run ()) {
case RESPONSE_ACCEPT:
break;
default:
current_timestretch->hide ();
return 1;
}
current_timestretch->status = 0;
current_timestretch->regions = regions;
current_timestretch->request.fraction = fraction;
current_timestretch->request.quick_seek = current_timestretch->quick_button.get_active();
current_timestretch->request.antialias = !current_timestretch->antialias_button.get_active();
current_timestretch->request.progress = 0.0f;
current_timestretch->request.running = true;
/* re-connect the cancel button and delete events */
current_timestretch->first_cancel.disconnect();
current_timestretch->first_delete.disconnect();
current_timestretch->cancel_button->signal_clicked().connect (mem_fun (current_timestretch, &TimeStretchDialog::cancel_timestretch_in_progress));
current_timestretch->signal_delete_event().connect (mem_fun (current_timestretch, &TimeStretchDialog::delete_timestretch_in_progress));
if (pthread_create_and_store ("timestretch", &thread, 0, timestretch_thread, current_timestretch)) {
current_timestretch->hide ();
error << _("timestretch cannot be started - thread creation error") << endmsg;
return -1;
}
pthread_detach (thread);
sigc::connection c = Glib::signal_timeout().connect (mem_fun (current_timestretch, &TimeStretchDialog::update_progress), 100);
while (current_timestretch->request.running) {
gtk_main_iteration ();
}
c.disconnect ();
current_timestretch->hide ();
return current_timestretch->status;
}
void
Editor::do_timestretch (TimeStretchDialog& dialog)
{
Track* t;
boost::shared_ptr<Playlist> playlist;
boost::shared_ptr<Region> new_region;
for (RegionSelection::iterator i = dialog.regions.begin(); i != dialog.regions.end(); ) {
AudioRegionView* arv = dynamic_cast<AudioRegionView*>(*i);
if (!arv)
continue;
boost::shared_ptr<AudioRegion> region (arv->audio_region());
TimeAxisView* tv = &(arv->get_time_axis_view());
RouteTimeAxisView* rtv;
RegionSelection::iterator tmp;
tmp = i;
++tmp;
if ((rtv = dynamic_cast<RouteTimeAxisView*> (tv)) == 0) {
i = tmp;
continue;
}
if ((t = dynamic_cast<Track*> (rtv->route().get())) == 0) {
i = tmp;
continue;
}
if ((playlist = t->diskstream()->playlist()) == 0) {
i = tmp;
continue;
}
dialog.request.region = region;
if (!dialog.request.running) {
/* we were cancelled */
dialog.status = 1;
return;
}
if ((new_region = session->tempoize_region (dialog.request)) == 0) {
dialog.status = -1;
dialog.request.running = false;
return;
}
XMLNode &before = playlist->get_state();
playlist->replace_region (region, new_region, region->position());
XMLNode &after = playlist->get_state();
session->add_command (new MementoCommand<Playlist>(*playlist, &before, &after));
i = tmp;
}
dialog.status = 0;
dialog.request.running = false;
dialog.request.region.reset ();
}
void*
Editor::timestretch_thread (void *arg)
{
PBD::ThreadCreated (pthread_self(), X_("TimeFX"));
TimeStretchDialog* tsd = static_cast<TimeStretchDialog*>(arg);
pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
tsd->editor.do_timestretch (*tsd);
return 0;
}