160 lines
4.8 KiB
C++
160 lines
4.8 KiB
C++
/*
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Copyright (C) 2001 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 "pbd/memento_command.h"
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#include "pbd/stateful_diff_command.h"
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#include "pbd/pthread_utils.h"
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#include "ardour/session.h"
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#include "ardour/audioregion.h"
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#include "ardour/playlist.h"
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#include "ardour/utils.h"
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#include "ardour/dB.h"
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#include <gtkmm2ext/utils.h>
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#include <cmath>
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#include "audio_region_editor.h"
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#include "audio_region_view.h"
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#include "ardour_ui.h"
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#include "utils.h"
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#include "gui_thread.h"
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#include "i18n.h"
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using namespace ARDOUR;
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using namespace PBD;
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using namespace std;
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using namespace Gtkmm2ext;
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static void *
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_peak_amplitude_thread (void* arg)
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{
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SessionEvent::create_per_thread_pool ("peak amplitude events", 64);
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static_cast<AudioRegionEditor*>(arg)->peak_amplitude_thread ();
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return 0;
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}
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AudioRegionEditor::AudioRegionEditor (Session* s, boost::shared_ptr<AudioRegion> r)
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: RegionEditor (s, r)
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, _audio_region (r)
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, gain_adjustment(accurate_coefficient_to_dB(_audio_region->scale_amplitude()), -40.0, +40.0, 0.1, 1.0, 0)
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, _peak_channel (false)
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{
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Gtk::HBox* b = Gtk::manage (new Gtk::HBox);
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b->set_spacing (6);
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b->pack_start (gain_entry);
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b->pack_start (*Gtk::manage (new Gtk::Label (_("dB"))), false, false);
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gain_label.set_name ("AudioRegionEditorLabel");
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gain_label.set_text (_("Region gain:"));
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gain_label.set_alignment (1, 0.5);
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gain_entry.configure (gain_adjustment, 0.0, 1);
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_table.attach (gain_label, 0, 1, _table_row, _table_row + 1, Gtk::FILL, Gtk::FILL);
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_table.attach (*b, 1, 2, _table_row, _table_row + 1, Gtk::FILL, Gtk::FILL);
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++_table_row;
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b = Gtk::manage (new Gtk::HBox);
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b->set_spacing (6);
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b->pack_start (_peak_amplitude);
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b->pack_start (*Gtk::manage (new Gtk::Label (_("dBFS"))), false, false);
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_peak_amplitude_label.set_name ("AudioRegionEditorLabel");
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_peak_amplitude_label.set_text (_("Peak amplitude:"));
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_peak_amplitude_label.set_alignment (1, 0.5);
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_table.attach (_peak_amplitude_label, 0, 1, _table_row, _table_row + 1, Gtk::FILL, Gtk::FILL);
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_table.attach (*b, 1, 2, _table_row, _table_row + 1, Gtk::FILL, Gtk::FILL);
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++_table_row;
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gain_changed ();
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gain_adjustment.signal_value_changed().connect (sigc::mem_fun (*this, &AudioRegionEditor::gain_adjustment_changed));
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_peak_amplitude.property_editable() = false;
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_peak_amplitude.set_text (_("Calculating..."));
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PeakAmplitudeFound.connect (_peak_amplitude_connection, invalidator (*this), boost::bind (&AudioRegionEditor::peak_amplitude_found, this, _1), gui_context ());
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pthread_create_and_store (X_("peak-amplitude"), &_peak_amplitude_thread_handle, _peak_amplitude_thread, this);
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_peak_channel.deliver ('c');
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}
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AudioRegionEditor::~AudioRegionEditor ()
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{
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pthread_cancel_one (_peak_amplitude_thread_handle);
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void* v;
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int const r = pthread_join (_peak_amplitude_thread_handle, &v);
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assert (r == 0);
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}
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void
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AudioRegionEditor::region_changed (const PBD::PropertyChange& what_changed)
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{
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RegionEditor::region_changed (what_changed);
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if (what_changed.contains (ARDOUR::Properties::scale_amplitude)) {
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gain_changed ();
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}
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if (what_changed.contains (ARDOUR::Properties::start) || what_changed.contains (ARDOUR::Properties::length)) {
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/* ask the peak thread to run again */
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_peak_channel.deliver ('c');
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}
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}
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void
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AudioRegionEditor::gain_changed ()
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{
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float const region_gain_dB = accurate_coefficient_to_dB (_audio_region->scale_amplitude());
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if (region_gain_dB != gain_adjustment.get_value()) {
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gain_adjustment.set_value(region_gain_dB);
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}
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}
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void
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AudioRegionEditor::gain_adjustment_changed ()
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{
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float const gain = dB_to_coefficient (gain_adjustment.get_value());
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if (_audio_region->scale_amplitude() != gain) {
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_audio_region->set_scale_amplitude (gain);
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}
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}
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void
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AudioRegionEditor::peak_amplitude_thread ()
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{
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while (1) {
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/* await instructions to run */
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char msg;
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_peak_channel.receive (msg);
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/* compute peak amplitude and signal the fact */
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PeakAmplitudeFound (accurate_coefficient_to_dB (_audio_region->maximum_amplitude ())); /* EMIT SIGNAL */
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}
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}
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void
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AudioRegionEditor::peak_amplitude_found (double p)
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{
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stringstream s;
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s.precision (2);
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s.setf (ios::fixed, ios::floatfield);
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s << p;
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_peak_amplitude.set_text (s.str ());
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}
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