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livetrax/gtk2_ardour/engine_dialog.cc

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/*
Copyright (C) 2010 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 <exception>
#include <vector>
#include <cmath>
#include <fstream>
#include <map>
#include <boost/scoped_ptr.hpp>
#include <gtkmm/messagedialog.h>
#include "pbd/error.h"
#include "pbd/xml++.h"
#include "pbd/unwind.h"
#include "pbd/failed_constructor.h"
#include <gtkmm/alignment.h>
#include <gtkmm/stock.h>
#include <gtkmm/notebook.h>
#include <gtkmm2ext/utils.h>
#include "ardour/audio_backend.h"
#include "ardour/audioengine.h"
#include "ardour/mtdm.h"
#include "ardour/rc_configuration.h"
#include "ardour/types.h"
#include "pbd/convert.h"
#include "pbd/error.h"
#include "ardour_ui.h"
#include "engine_dialog.h"
#include "gui_thread.h"
#include "utils.h"
#include "i18n.h"
using namespace std;
using namespace Gtk;
using namespace Gtkmm2ext;
using namespace PBD;
using namespace Glib;
static const unsigned int midi_tab = -1; /* not currently in use */
static const unsigned int latency_tab = 1; /* zero-based, page zero is the main setup page */
static const char* results_markup = X_("<span foreground=\"red\" style=\"italic\" size=\"larger\">%1</span>");
EngineControl::EngineControl ()
: ArdourDialog (_("Audio/MIDI Setup"))
, basic_packer (9, 4)
, input_latency_adjustment (0, 0, 99999, 1)
, input_latency (input_latency_adjustment)
, output_latency_adjustment (0, 0, 99999, 1)
, output_latency (output_latency_adjustment)
, input_channels_adjustment (0, 0, 256, 1)
, input_channels (input_channels_adjustment)
, output_channels_adjustment (0, 0, 256, 1)
, output_channels (output_channels_adjustment)
, ports_adjustment (128, 8, 1024, 1, 16)
, ports_spinner (ports_adjustment)
, control_app_button (_("Device Control Panel"))
, lm_measure_label (_("Measure"))
, lm_use_button (_("Use results"))
, lm_back_button (_("Back to settings ... (ignore results)"))
, lm_button (_("Calibrate..."))
, lm_table (12, 3)
, have_lm_results (false)
, lm_running (false)
, midi_refresh_button (_("Refresh list"))
, ignore_changes (0)
, _desired_sample_rate (0)
, started_at_least_once (false)
{
using namespace Notebook_Helpers;
vector<string> strings;
Label* label;
AttachOptions xopt = AttachOptions (FILL|EXPAND);
int row;
set_name (X_("AudioMIDISetup"));
/* the backend combo is the one thing that is ALWAYS visible
*/
vector<const ARDOUR::AudioBackendInfo*> backends = ARDOUR::AudioEngine::instance()->available_backends();
if (backends.empty()) {
MessageDialog msg (string_compose (_("No audio/MIDI backends detected. %1 cannot run\n\n(This is a build/packaging/system error. It should never happen.)"), PROGRAM_NAME));
msg.run ();
throw failed_constructor ();
}
for (vector<const ARDOUR::AudioBackendInfo*>::const_iterator b = backends.begin(); b != backends.end(); ++b) {
strings.push_back ((*b)->name);
}
set_popdown_strings (backend_combo, strings);
backend_combo.set_active_text (strings.front());
backend_combo.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::backend_changed));
/* setup basic packing characteristics for the table used on the main
* tab of the notebook
*/
basic_packer.set_spacings (6);
basic_packer.set_border_width (12);
basic_packer.set_homogeneous (false);
/* pack it in */
basic_hbox.pack_start (basic_packer, false, false);
/* latency tab */
/* latency measurement tab */
lm_title.set_markup (string_compose ("<span size=\"large\" weight=\"bold\">%1</span>", _("Latency Measurement Tool")));
row = 0;
lm_table.set_row_spacings (12);
lm_table.set_col_spacings (6);
lm_table.set_homogeneous (false);
lm_table.attach (lm_title, 0, 3, row, row+1, xopt, (AttachOptions) 0);
row++;
Gtk::Label* preamble;
preamble = manage (new Label);
preamble->set_width_chars (60);
preamble->set_line_wrap (true);
preamble->set_markup (_("<span weight=\"bold\">Turn down the volume on your audio equipment to a very low level.</span>"));
lm_table.attach (*preamble, 0, 3, row, row+1, AttachOptions(FILL|EXPAND), (AttachOptions) 0);
row++;
preamble = manage (new Label);
preamble->set_width_chars (60);
preamble->set_line_wrap (true);
preamble->set_markup (_("Select two channels below and connect them using a cable."));
lm_table.attach (*preamble, 0, 3, row, row+1, AttachOptions(FILL|EXPAND), (AttachOptions) 0);
row++;
label = manage (new Label (_("Output channel")));
lm_table.attach (*label, 0, 1, row, row+1, xopt, (AttachOptions) 0);
Gtk::Alignment* misc_align = manage (new Alignment (0.0, 0.5));
misc_align->add (lm_output_channel_combo);
lm_table.attach (*misc_align, 1, 3, row, row+1, xopt, (AttachOptions) 0);
++row;
label = manage (new Label (_("Input channel")));
lm_table.attach (*label, 0, 1, row, row+1, xopt, (AttachOptions) 0);
misc_align = manage (new Alignment (0.0, 0.5));
misc_align->add (lm_input_channel_combo);
lm_table.attach (*misc_align, 1, 3, row, row+1, FILL, (AttachOptions) 0);
++row;
xopt = AttachOptions(0);
lm_measure_label.set_padding (10, 10);
lm_measure_button.add (lm_measure_label);
lm_measure_button.signal_clicked().connect (sigc::mem_fun (*this, &EngineControl::latency_button_clicked));
lm_use_button.signal_clicked().connect (sigc::mem_fun (*this, &EngineControl::use_latency_button_clicked));
lm_back_button.signal_clicked().connect (sigc::bind (sigc::mem_fun (notebook, &Gtk::Notebook::set_current_page), 0));
lm_use_button.set_sensitive (false);
/* Increase the default spacing around the labels of these three
* buttons
*/
Gtk::Misc* l;
if ((l = dynamic_cast<Gtk::Misc*>(lm_use_button.get_child())) != 0) {
l->set_padding (10, 10);
}
if ((l = dynamic_cast<Gtk::Misc*>(lm_back_button.get_child())) != 0) {
l->set_padding (10, 10);
}
preamble = manage (new Label);
preamble->set_width_chars (60);
preamble->set_line_wrap (true);
preamble->set_markup (_("Once the channels are connected, click the \"Measure\" button."));
lm_table.attach (*preamble, 0, 3, row, row+1, AttachOptions(FILL|EXPAND), (AttachOptions) 0);
row++;
preamble = manage (new Label);
preamble->set_width_chars (60);
preamble->set_line_wrap (true);
preamble->set_markup (_("When satisfied with the results, click the \"Use results\" button."));
lm_table.attach (*preamble, 0, 3, row, row+1, AttachOptions(FILL|EXPAND), (AttachOptions) 0);
++row; // skip a row in the table
++row; // skip a row in the table
lm_table.attach (lm_results, 0, 3, row, row+1, AttachOptions(FILL|EXPAND), (AttachOptions) 0);
++row; // skip a row in the table
++row; // skip a row in the table
lm_table.attach (lm_measure_button, 0, 1, row, row+1, AttachOptions(FILL|EXPAND), (AttachOptions) 0);
lm_table.attach (lm_use_button, 1, 2, row, row+1, AttachOptions(FILL|EXPAND), (AttachOptions) 0);
lm_table.attach (lm_back_button, 2, 3, row, row+1, AttachOptions(FILL|EXPAND), (AttachOptions) 0);
lm_results.set_markup (string_compose (results_markup, _("No measurement results yet")));
lm_vbox.set_border_width (12);
lm_vbox.pack_start (lm_table, false, false);
/* pack it all up */
notebook.pages().push_back (TabElem (basic_vbox, _("Audio")));
// notebook.pages().push_back (TabElem (midi_vbox, _("MIDI")));
notebook.pages().push_back (TabElem (lm_vbox, _("Latency")));
notebook.set_border_width (12);
notebook.set_show_tabs (false);
notebook.show_all ();
notebook.set_name ("SettingsNotebook");
/* packup the notebook */
get_vbox()->set_border_width (12);
get_vbox()->pack_start (notebook);
/* need a special function to print "all available channels" when the
* channel counts hit zero.
*/
input_channels.signal_output().connect (sigc::bind (sigc::ptr_fun (&EngineControl::print_channel_count), &input_channels));
output_channels.signal_output().connect (sigc::bind (sigc::ptr_fun (&EngineControl::print_channel_count), &output_channels));
control_app_button.signal_clicked().connect (mem_fun (*this, &EngineControl::control_app_button_clicked));
manage_control_app_sensitivity ();
cancel_button = add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
ok_button = add_button (Gtk::Stock::OK, Gtk::RESPONSE_OK);
apply_button = add_button (Gtk::Stock::APPLY, Gtk::RESPONSE_APPLY);
/* Pick up any existing audio setup configuration, if appropriate */
XMLNode* audio_setup = ARDOUR::Config->extra_xml ("AudioMIDISetup");
ARDOUR::AudioEngine::instance()->Running.connect (running_connection, MISSING_INVALIDATOR, boost::bind (&EngineControl::engine_running, this), gui_context());
ARDOUR::AudioEngine::instance()->Stopped.connect (stopped_connection, MISSING_INVALIDATOR, boost::bind (&EngineControl::engine_stopped, this), gui_context());
ARDOUR::AudioEngine::instance()->Halted.connect (stopped_connection, MISSING_INVALIDATOR, boost::bind (&EngineControl::engine_stopped, this), gui_context());
backend_changed ();
if (audio_setup) {
set_state (*audio_setup);
}
/* Connect to signals */
driver_combo.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::driver_changed));
sample_rate_combo.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::sample_rate_changed));
buffer_size_combo.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::buffer_size_changed));
device_combo.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::device_changed));
midi_option_combo.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::midi_option_changed));
input_latency.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::parameter_changed));
output_latency.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::parameter_changed));
input_channels.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::parameter_changed));
output_channels.signal_changed().connect (sigc::mem_fun (*this, &EngineControl::parameter_changed));
notebook.signal_switch_page().connect (sigc::mem_fun (*this, &EngineControl::on_switch_page));
}
void
EngineControl::on_response (int response_id)
{
ArdourDialog::on_response (response_id);
switch (response_id) {
case RESPONSE_APPLY:
push_state_to_backend (true);
break;
case RESPONSE_OK:
push_state_to_backend (true);
hide ();
break;
case RESPONSE_DELETE_EVENT: {
GdkEventButton ev;
ev.type = GDK_BUTTON_PRESS;
ev.button = 1;
on_delete_event ((GdkEventAny*) &ev);
break;
}
default:
hide ();
}
}
void
EngineControl::build_notebook ()
{
Label* label;
AttachOptions xopt = AttachOptions (FILL|EXPAND);
/* clear the table */
Gtkmm2ext::container_clear (basic_vbox);
Gtkmm2ext::container_clear (basic_packer);
if (control_app_button.get_parent()) {
control_app_button.get_parent()->remove (control_app_button);
}
label = manage (left_aligned_label (_("Audio System:")));
basic_packer.attach (*label, 0, 1, 0, 1, xopt, (AttachOptions) 0);
basic_packer.attach (backend_combo, 1, 2, 0, 1, xopt, (AttachOptions) 0);
lm_button.signal_clicked.connect (sigc::mem_fun (*this, &EngineControl::calibrate_latency));
lm_button.set_name ("generic button");
if (_have_control) {
build_full_control_notebook ();
} else {
build_no_control_notebook ();
}
basic_vbox.pack_start (basic_hbox, false, false);
if (_have_control) {
Gtk::HBox* hpacker = manage (new HBox);
hpacker->set_border_width (12);
hpacker->pack_start (control_app_button, false, false);
hpacker->show ();
control_app_button.show();
basic_vbox.pack_start (*hpacker);
}
basic_vbox.show_all ();
}
void
EngineControl::build_full_control_notebook ()
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
assert (backend);
using namespace Notebook_Helpers;
Label* label;
vector<string> strings;
AttachOptions xopt = AttachOptions (FILL|EXPAND);
int row = 1; // row zero == backend combo
/* start packing it up */
if (backend->requires_driver_selection()) {
label = manage (left_aligned_label (_("Driver:")));
basic_packer.attach (*label, 0, 1, row, row + 1, xopt, (AttachOptions) 0);
basic_packer.attach (driver_combo, 1, 2, row, row + 1, xopt, (AttachOptions) 0);
row++;
}
label = manage (left_aligned_label (_("Device:")));
basic_packer.attach (*label, 0, 1, row, row + 1, xopt, (AttachOptions) 0);
basic_packer.attach (device_combo, 1, 2, row, row + 1, xopt, (AttachOptions) 0);
row++;
label = manage (left_aligned_label (_("Sample rate:")));
basic_packer.attach (*label, 0, 1, row, row + 1, xopt, (AttachOptions) 0);
basic_packer.attach (sample_rate_combo, 1, 2, row, row + 1, xopt, (AttachOptions) 0);
row++;
label = manage (left_aligned_label (_("Buffer size:")));
basic_packer.attach (*label, 0, 1, row, row + 1, xopt, (AttachOptions) 0);
basic_packer.attach (buffer_size_combo, 1, 2, row, row + 1, xopt, (AttachOptions) 0);
buffer_size_duration_label.set_alignment (0.0); /* left-align */
basic_packer.attach (buffer_size_duration_label, 2, 3, row, row+1, SHRINK, (AttachOptions) 0);
row++;
input_channels.set_name ("InputChannels");
input_channels.set_flags(Gtk::CAN_FOCUS);
input_channels.set_digits(0);
input_channels.set_wrap(false);
output_channels.set_editable (true);
label = manage (left_aligned_label (_("Input Channels:")));
basic_packer.attach (*label, 0, 1, row, row+1, xopt, (AttachOptions) 0);
basic_packer.attach (input_channels, 1, 2, row, row+1, xopt, (AttachOptions) 0);
++row;
output_channels.set_name ("OutputChannels");
output_channels.set_flags(Gtk::CAN_FOCUS);
output_channels.set_digits(0);
output_channels.set_wrap(false);
output_channels.set_editable (true);
label = manage (left_aligned_label (_("Output Channels:")));
basic_packer.attach (*label, 0, 1, row, row+1, xopt, (AttachOptions) 0);
basic_packer.attach (output_channels, 1, 2, row, row+1, xopt, (AttachOptions) 0);
++row;
input_latency.set_name ("InputLatency");
input_latency.set_flags(Gtk::CAN_FOCUS);
input_latency.set_digits(0);
input_latency.set_wrap(false);
input_latency.set_editable (true);
label = manage (left_aligned_label (_("Hardware input latency:")));
basic_packer.attach (*label, 0, 1, row, row+1, xopt, (AttachOptions) 0);
basic_packer.attach (input_latency, 1, 2, row, row+1, xopt, (AttachOptions) 0);
label = manage (left_aligned_label (_("samples")));
basic_packer.attach (*label, 2, 3, row, row+1, SHRINK, (AttachOptions) 0);
++row;
output_latency.set_name ("OutputLatency");
output_latency.set_flags(Gtk::CAN_FOCUS);
output_latency.set_digits(0);
output_latency.set_wrap(false);
output_latency.set_editable (true);
label = manage (left_aligned_label (_("Hardware output latency:")));
basic_packer.attach (*label, 0, 1, row, row+1, xopt, (AttachOptions) 0);
basic_packer.attach (output_latency, 1, 2, row, row+1, xopt, (AttachOptions) 0);
label = manage (left_aligned_label (_("samples")));
basic_packer.attach (*label, 2, 3, row, row+1, SHRINK, (AttachOptions) 0);
/* button spans 2 rows */
basic_packer.attach (lm_button, 3, 4, row-1, row+1, xopt, xopt);
++row;
label = manage (left_aligned_label (_("MIDI System")));
basic_packer.attach (*label, 0, 1, row, row + 1, xopt, (AttachOptions) 0);
basic_packer.attach (midi_option_combo, 1, 2, row, row + 1, SHRINK, (AttachOptions) 0);
row++;
}
void
EngineControl::build_no_control_notebook ()
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
assert (backend);
using namespace Notebook_Helpers;
Label* label;
vector<string> strings;
AttachOptions xopt = AttachOptions (FILL|EXPAND);
int row = 1; // row zero == backend combo
const string msg = string_compose (_("The %1 audio backend was configured and started externally.\nThis limits your control over it."), backend->name());
label = manage (new Label);
label->set_markup (string_compose ("<span weight=\"bold\" foreground=\"red\">%1</span>", msg));
basic_packer.attach (*label, 0, 2, row, row + 1, xopt, (AttachOptions) 0);
row++;
if (backend->can_change_sample_rate_when_running()) {
label = manage (left_aligned_label (_("Sample rate:")));
basic_packer.attach (*label, 0, 1, row, row + 1, xopt, (AttachOptions) 0);
basic_packer.attach (sample_rate_combo, 1, 2, row, row + 1, xopt, (AttachOptions) 0);
row++;
}
if (backend->can_change_buffer_size_when_running()) {
label = manage (left_aligned_label (_("Buffer size:")));
basic_packer.attach (*label, 0, 1, row, row + 1, xopt, (AttachOptions) 0);
basic_packer.attach (buffer_size_combo, 1, 2, row, row + 1, xopt, (AttachOptions) 0);
buffer_size_duration_label.set_alignment (0.0); /* left-align */
basic_packer.attach (buffer_size_duration_label, 2, 3, row, row+1, xopt, (AttachOptions) 0);
row++;
}
connect_disconnect_button.signal_clicked().connect (sigc::mem_fun (*this, &EngineControl::connect_disconnect_click));
basic_packer.attach (connect_disconnect_button, 0, 2, row, row+1, FILL, AttachOptions (0));
row++;
}
EngineControl::~EngineControl ()
{
ignore_changes = true;
}
void
EngineControl::disable_latency_tab ()
{
vector<string> empty;
set_popdown_strings (lm_output_channel_combo, empty);
set_popdown_strings (lm_input_channel_combo, empty);
lm_measure_button.set_sensitive (false);
lm_use_button.set_sensitive (false);
}
void
EngineControl::enable_latency_tab ()
{
vector<string> outputs;
vector<string> inputs;
ARDOUR::AudioEngine::instance()->get_physical_outputs (ARDOUR::DataType::AUDIO, outputs);
ARDOUR::AudioEngine::instance()->get_physical_inputs (ARDOUR::DataType::AUDIO, inputs);
if (inputs.empty() || outputs.empty()) {
MessageDialog msg (_("Your selected audio configuration is playback- or capture-only.\n\nLatency calibration requires playback and capture"));
lm_measure_button.set_sensitive (false);
notebook.set_current_page (0);
msg.run ();
return;
}
if (!outputs.empty()) {
set_popdown_strings (lm_output_channel_combo, outputs);
lm_output_channel_combo.set_active_text (outputs.front());
lm_output_channel_combo.set_sensitive (true);
} else {
lm_output_channel_combo.set_sensitive (false);
}
if (!inputs.empty()) {
set_popdown_strings (lm_input_channel_combo, inputs);
lm_input_channel_combo.set_active_text (inputs.front());
lm_input_channel_combo.set_sensitive (true);
} else {
lm_input_channel_combo.set_sensitive (false);
}
lm_measure_button.set_sensitive (true);
}
void
EngineControl::setup_midi_tab_for_backend ()
{
string backend = backend_combo.get_active_text ();
Gtkmm2ext::container_clear (midi_vbox);
midi_vbox.set_border_width (12);
midi_device_table.set_border_width (12);
if (backend == "JACK") {
setup_midi_tab_for_jack ();
}
midi_vbox.pack_start (midi_device_table, true, true);
midi_vbox.pack_start (midi_refresh_button, false, false);
midi_vbox.show_all ();
midi_refresh_button.signal_clicked().connect (sigc::mem_fun (*this, &EngineControl::refresh_midi_display));
}
void
EngineControl::setup_midi_tab_for_jack ()
{
}
void
EngineControl::refresh_midi_display ()
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
assert (backend);
vector<string> midi_inputs;
vector<string> midi_outputs;
int row = 0;
AttachOptions xopt = AttachOptions (FILL|EXPAND);
Gtk::Label* l;
Gtkmm2ext::container_clear (midi_device_table);
backend->get_physical_inputs (ARDOUR::DataType::MIDI, midi_inputs);
backend->get_physical_outputs (ARDOUR::DataType::MIDI, midi_outputs);
midi_device_table.set_spacings (6);
midi_device_table.set_homogeneous (true);
midi_device_table.resize (midi_inputs.size() + midi_outputs.size() + 3, 1);
l = manage (new Label);
l->set_markup (string_compose ("<span size=\"large\" weight=\"bold\">%1</span>", _("MIDI Inputs")));
midi_device_table.attach (*l, 0, 1, row, row + 1, xopt, AttachOptions (0));
l->set_alignment (0, 0.5);
row++;
l->show ();
for (vector<string>::iterator p = midi_inputs.begin(); p != midi_inputs.end(); ++p) {
l = manage (new Label ((*p).substr ((*p).find_last_of (':') + 1)));
l->set_alignment (0, 0.5);
midi_device_table.attach (*l, 0, 1, row, row + 1, xopt, AttachOptions (0));
l->show ();
row++;
}
row++; // extra row of spacing
l = manage (new Label);
l->set_markup (string_compose ("<span size=\"large\" weight=\"bold\">%1</span>", _("MIDI Outputs")));
midi_device_table.attach (*l, 0, 1, row, row + 1, xopt, AttachOptions (0));
l->set_alignment (0, 0.5);
row++;
l->show ();
for (vector<string>::iterator p = midi_outputs.begin(); p != midi_outputs.end(); ++p) {
l = manage (new Label ((*p).substr ((*p).find_last_of (':') + 1)));
l->set_alignment (0, 0.5);
midi_device_table.attach (*l, 0, 1, row, row + 1, xopt, AttachOptions (0));
l->show ();
row++;
}
}
void
EngineControl::update_sensitivity ()
{
}
void
EngineControl::backend_changed ()
{
if (ignore_changes) {
return;
}
string backend_name = backend_combo.get_active_text();
boost::shared_ptr<ARDOUR::AudioBackend> backend;
if (!(backend = ARDOUR::AudioEngine::instance()->set_backend (backend_name, "ardour", ""))) {
/* eh? setting the backend failed... how ? */
return;
}
_have_control = ARDOUR::AudioEngine::instance()->setup_required ();
build_notebook ();
setup_midi_tab_for_backend ();
if (backend->requires_driver_selection()) {
vector<string> drivers = backend->enumerate_drivers();
driver_combo.set_sensitive (true);
if (!drivers.empty()) {
{
PBD::Unwinder<uint32_t> protect_ignore_changes (ignore_changes, ignore_changes + 1);
set_popdown_strings (driver_combo, drivers);
driver_combo.set_active_text (drivers.front());
}
driver_changed ();
}
} else {
driver_combo.set_sensitive (false);
/* this will change the device text which will cause a call to
* device changed which will set up parameters
*/
list_devices ();
}
vector<string> midi_options = backend->enumerate_midi_options();
if (midi_options.size() == 1) {
/* only contains the "none" option */
midi_option_combo.set_sensitive (false);
} else {
if (_have_control) {
set_popdown_strings (midi_option_combo, midi_options);
midi_option_combo.set_active_text (midi_options.front());
midi_option_combo.set_sensitive (true);
} else {
midi_option_combo.set_sensitive (false);
}
}
maybe_display_saved_state ();
}
bool
EngineControl::print_channel_count (Gtk::SpinButton* sb)
{
uint32_t cnt = (uint32_t) sb->get_value();
if (cnt == 0) {
sb->set_text (_("all available channels"));
} else {
char buf[32];
snprintf (buf, sizeof (buf), "%d", cnt);
sb->set_text (buf);
}
return true;
}
void
EngineControl::list_devices ()
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
assert (backend);
/* now fill out devices, mark sample rates, buffer sizes insensitive */
vector<ARDOUR::AudioBackend::DeviceStatus> all_devices = backend->enumerate_devices ();
/* NOTE: Ardour currently does not display the "available" field of the
* returned devices.
*
* Doing so would require a different GUI widget than the combo
* box/popdown that we currently use, since it has no way to list
* items that are not selectable. Something more like a popup menu,
* which could have unselectable items, would be appropriate.
*/
vector<string> available_devices;
for (vector<ARDOUR::AudioBackend::DeviceStatus>::const_iterator i = all_devices.begin(); i != all_devices.end(); ++i) {
available_devices.push_back (i->name);
}
if (!available_devices.empty()) {
update_sensitivity ();
{
PBD::Unwinder<uint32_t> protect_ignore_changes (ignore_changes, ignore_changes + 1);
set_popdown_strings (device_combo, available_devices);
device_combo.set_active_text (available_devices.front());
}
device_changed ();
ok_button->set_sensitive (true);
apply_button->set_sensitive (true);
} else {
sample_rate_combo.set_sensitive (false);
buffer_size_combo.set_sensitive (false);
input_latency.set_sensitive (false);
output_latency.set_sensitive (false);
input_channels.set_sensitive (false);
output_channels.set_sensitive (false);
ok_button->set_sensitive (false);
apply_button->set_sensitive (false);
}
}
void
EngineControl::driver_changed ()
{
if (ignore_changes) {
return;
}
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
assert (backend);
backend->set_driver (driver_combo.get_active_text());
list_devices ();
maybe_display_saved_state ();
}
void
EngineControl::device_changed ()
{
if (ignore_changes) {
return;
}
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
assert (backend);
string device_name = device_combo.get_active_text ();
vector<string> s;
{
PBD::Unwinder<uint32_t> protect_ignore_changes (ignore_changes, ignore_changes + 1);
/* don't allow programmatic change to combos to cause a
recursive call to this method.
*/
/* sample rates */
string desired;
vector<float> sr;
if (_have_control) {
sr = backend->available_sample_rates (device_name);
} else {
sr.push_back (8000.0f);
sr.push_back (16000.0f);
sr.push_back (32000.0f);
sr.push_back (44100.0f);
sr.push_back (48000.0f);
sr.push_back (88200.0f);
sr.push_back (96000.0f);
sr.push_back (192000.0f);
sr.push_back (384000.0f);
}
for (vector<float>::const_iterator x = sr.begin(); x != sr.end(); ++x) {
s.push_back (rate_as_string (*x));
if (*x == _desired_sample_rate) {
desired = s.back();
}
}
if (!s.empty()) {
sample_rate_combo.set_sensitive (true);
set_popdown_strings (sample_rate_combo, s);
if (desired.empty()) {
sample_rate_combo.set_active_text (rate_as_string (backend->default_sample_rate()));
} else {
sample_rate_combo.set_active_text (desired);
}
} else {
sample_rate_combo.set_sensitive (false);
}
/* buffer sizes */
vector<uint32_t> bs;
if (_have_control) {
bs = backend->available_buffer_sizes(device_name);
} else if (backend->can_change_buffer_size_when_running()) {
bs.push_back (8);
bs.push_back (16);
bs.push_back (32);
bs.push_back (64);
bs.push_back (128);
bs.push_back (256);
bs.push_back (512);
bs.push_back (1024);
bs.push_back (2048);
bs.push_back (4096);
bs.push_back (8192);
}
s.clear ();
for (vector<uint32_t>::const_iterator x = bs.begin(); x != bs.end(); ++x) {
s.push_back (bufsize_as_string (*x));
}
if (!s.empty()) {
buffer_size_combo.set_sensitive (true);
set_popdown_strings (buffer_size_combo, s);
buffer_size_combo.set_active_text (bufsize_as_string (backend->default_buffer_size()));
show_buffer_duration ();
} else {
buffer_size_combo.set_sensitive (false);
}
/* XXX theoretically need to set min + max channel counts here
*/
manage_control_app_sensitivity ();
}
/* pick up any saved state for this device */
maybe_display_saved_state ();
}
string
EngineControl::bufsize_as_string (uint32_t sz)
{
/* Translators: "samples" is always plural here, so no
need for plural+singular forms.
*/
char buf[32];
snprintf (buf, sizeof (buf), _("%u samples"), sz);
return buf;
}
void
EngineControl::sample_rate_changed ()
{
if (ignore_changes) {
return;
}
/* reset the strings for buffer size to show the correct msec value
(reflecting the new sample rate).
*/
show_buffer_duration ();
save_state ();
}
void
EngineControl::buffer_size_changed ()
{
if (ignore_changes) {
return;
}
show_buffer_duration ();
save_state ();
}
void
EngineControl::show_buffer_duration ()
{
/* buffer sizes - convert from just samples to samples + msecs for
* the displayed string
*/
string bs_text = buffer_size_combo.get_active_text ();
uint32_t samples = atoi (bs_text); /* will ignore trailing text */
uint32_t rate = get_rate();
/* Translators: "msecs" is ALWAYS plural here, so we do not
need singular form as well.
*/
/* Developers: note the hard-coding of a double buffered model
in the (2 * samples) computation of latency. we always start
the audiobackend in this configuration.
*/
char buf[32];
snprintf (buf, sizeof (buf), _("(%.1f msecs)"), (2 * samples) / (rate/1000.0));
buffer_size_duration_label.set_text (buf);
}
void
EngineControl::midi_option_changed ()
{
if (!ignore_changes) {
save_state ();
}
}
void
EngineControl::parameter_changed ()
{
if (!ignore_changes) {
save_state ();
}
}
EngineControl::State*
EngineControl::get_matching_state (const string& backend,
const string& driver,
const string& device)
{
for (StateList::iterator i = states.begin(); i != states.end(); ++i) {
if ((*i).backend == backend &&
(*i).driver == driver &&
(*i).device == device) {
return &(*i);
}
}
return 0;
}
EngineControl::State*
EngineControl::get_saved_state_for_currently_displayed_backend_and_device ()
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
if (backend) {
return get_matching_state (backend_combo.get_active_text(),
(backend->requires_driver_selection() ? (std::string) driver_combo.get_active_text() : string()),
device_combo.get_active_text());
}
return get_matching_state (backend_combo.get_active_text(),
string(),
device_combo.get_active_text());
}
EngineControl::State*
EngineControl::save_state ()
{
if (!_have_control) {
return 0;
}
bool existing = true;
State* state = get_saved_state_for_currently_displayed_backend_and_device ();
if (!state) {
existing = false;
state = new State;
}
store_state (*state);
if (!existing) {
states.push_back (*state);
}
return state;
}
void
EngineControl::store_state (State& state)
{
state.backend = get_backend ();
state.driver = get_driver ();
state.device = get_device_name ();
state.sample_rate = get_rate ();
state.buffer_size = get_buffer_size ();
state.input_latency = get_input_latency ();
state.output_latency = get_output_latency ();
state.input_channels = get_input_channels ();
state.output_channels = get_output_channels ();
state.midi_option = get_midi_option ();
}
void
EngineControl::maybe_display_saved_state ()
{
if (!_have_control) {
return;
}
State* state = get_saved_state_for_currently_displayed_backend_and_device ();
if (state) {
PBD::Unwinder<uint32_t> protect_ignore_changes (ignore_changes, ignore_changes + 1);
if (!_desired_sample_rate) {
sample_rate_combo.set_active_text (rate_as_string (state->sample_rate));
}
buffer_size_combo.set_active_text (bufsize_as_string (state->buffer_size));
/* call this explicitly because we're ignoring changes to
the controls at this point.
*/
show_buffer_duration ();
input_latency.set_value (state->input_latency);
output_latency.set_value (state->output_latency);
if (!state->midi_option.empty()) {
midi_option_combo.set_active_text (state->midi_option);
}
}
}
XMLNode&
EngineControl::get_state ()
{
XMLNode* root = new XMLNode ("AudioMIDISetup");
std::string path;
if (!states.empty()) {
XMLNode* state_nodes = new XMLNode ("EngineStates");
for (StateList::const_iterator i = states.begin(); i != states.end(); ++i) {
XMLNode* node = new XMLNode ("State");
node->add_property ("backend", (*i).backend);
node->add_property ("driver", (*i).driver);
node->add_property ("device", (*i).device);
node->add_property ("sample-rate", (*i).sample_rate);
node->add_property ("buffer-size", (*i).buffer_size);
node->add_property ("input-latency", (*i).input_latency);
node->add_property ("output-latency", (*i).output_latency);
node->add_property ("input-channels", (*i).input_channels);
node->add_property ("output-channels", (*i).output_channels);
node->add_property ("active", (*i).active ? "yes" : "no");
node->add_property ("midi-option", (*i).midi_option);
state_nodes->add_child_nocopy (*node);
}
root->add_child_nocopy (*state_nodes);
}
return *root;
}
void
EngineControl::set_state (const XMLNode& root)
{
XMLNodeList clist, cclist;
XMLNodeConstIterator citer, cciter;
XMLNode* child;
XMLNode* grandchild;
XMLProperty* prop = NULL;
if (root.name() != "AudioMIDISetup") {
return;
}
clist = root.children();
states.clear ();
for (citer = clist.begin(); citer != clist.end(); ++citer) {
child = *citer;
if (child->name() != "EngineStates") {
continue;
}
cclist = child->children();
for (cciter = cclist.begin(); cciter != cclist.end(); ++cciter) {
State state;
grandchild = *cciter;
if (grandchild->name() != "State") {
continue;
}
if ((prop = grandchild->property ("backend")) == 0) {
continue;
}
state.backend = prop->value ();
if ((prop = grandchild->property ("driver")) == 0) {
continue;
}
state.driver = prop->value ();
if ((prop = grandchild->property ("device")) == 0) {
continue;
}
state.device = prop->value ();
if ((prop = grandchild->property ("sample-rate")) == 0) {
continue;
}
state.sample_rate = atof (prop->value ());
if ((prop = grandchild->property ("buffer-size")) == 0) {
continue;
}
state.buffer_size = atoi (prop->value ());
if ((prop = grandchild->property ("input-latency")) == 0) {
continue;
}
state.input_latency = atoi (prop->value ());
if ((prop = grandchild->property ("output-latency")) == 0) {
continue;
}
state.output_latency = atoi (prop->value ());
if ((prop = grandchild->property ("input-channels")) == 0) {
continue;
}
state.input_channels = atoi (prop->value ());
if ((prop = grandchild->property ("output-channels")) == 0) {
continue;
}
state.output_channels = atoi (prop->value ());
if ((prop = grandchild->property ("active")) == 0) {
continue;
}
state.active = string_is_affirmative (prop->value ());
if ((prop = grandchild->property ("midi-option")) == 0) {
continue;
}
state.midi_option = prop->value ();
states.push_back (state);
}
}
/* now see if there was an active state and switch the setup to it */
for (StateList::const_iterator i = states.begin(); i != states.end(); ++i) {
if ((*i).active) {
ignore_changes++;
backend_combo.set_active_text ((*i).backend);
driver_combo.set_active_text ((*i).driver);
device_combo.set_active_text ((*i).device);
sample_rate_combo.set_active_text (rate_as_string ((*i).sample_rate));
buffer_size_combo.set_active_text (bufsize_as_string ((*i).buffer_size));
input_latency.set_value ((*i).input_latency);
output_latency.set_value ((*i).output_latency);
midi_option_combo.set_active_text ((*i).midi_option);
ignore_changes--;
break;
}
}
}
int
EngineControl::push_state_to_backend (bool start)
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
if (!backend) {
return 0;
}
/* figure out what is going to change */
bool restart_required = false;
bool was_running = ARDOUR::AudioEngine::instance()->running();
bool change_driver = false;
bool change_device = false;
bool change_rate = false;
bool change_bufsize = false;
bool change_latency = false;
bool change_channels = false;
bool change_midi = false;
uint32_t ochan = get_output_channels ();
uint32_t ichan = get_input_channels ();
if (_have_control) {
if (started_at_least_once) {
/* we can control the backend */
if (backend->requires_driver_selection()) {
if (get_driver() != backend->driver_name()) {
change_driver = true;
}
}
if (get_device_name() != backend->device_name()) {
change_device = true;
}
if (get_rate() != backend->sample_rate()) {
change_rate = true;
}
if (get_buffer_size() != backend->buffer_size()) {
change_bufsize = true;
}
if (get_midi_option() != backend->midi_option()) {
change_midi = true;
}
/* zero-requested channels means "all available" */
if (ichan == 0) {
ichan = backend->input_channels();
}
if (ochan == 0) {
ochan = backend->output_channels();
}
if (ichan != backend->input_channels()) {
change_channels = true;
}
if (ochan != backend->output_channels()) {
change_channels = true;
}
if (get_input_latency() != backend->systemic_input_latency() ||
get_output_latency() != backend->systemic_output_latency()) {
change_latency = true;
}
} else {
/* backend never started, so we have to force a group
of settings.
*/
change_device = true;
if (backend->requires_driver_selection()) {
change_driver = true;
}
change_rate = true;
change_bufsize = true;
change_channels = true;
change_latency = true;
change_midi = true;
}
} else {
/* we have no control over the backend, meaning that we can
* only possibly change sample rate and buffer size.
*/
if (get_rate() != backend->sample_rate()) {
change_bufsize = true;
}
if (get_buffer_size() != backend->buffer_size()) {
change_bufsize = true;
}
}
if (!_have_control) {
/* We do not have control over the backend, so the best we can
* do is try to change the sample rate and/or bufsize and get
* out of here.
*/
if (change_rate && !backend->can_change_sample_rate_when_running()) {
return 1;
}
if (change_bufsize && !backend->can_change_buffer_size_when_running()) {
return 1;
}
if (change_rate) {
backend->set_sample_rate (get_rate());
}
if (change_bufsize) {
backend->set_buffer_size (get_buffer_size());
}
if (start) {
if (ARDOUR::AudioEngine::instance()->start ()) {
error << string_compose (_("Could not start backend engine %1"), backend->name()) << endmsg;
return -1;
}
}
post_push ();
return 0;
}
/* determine if we need to stop the backend before changing parameters */
if (change_driver || change_device || change_channels || change_latency ||
(change_rate && !backend->can_change_sample_rate_when_running()) ||
change_midi ||
(change_bufsize && !backend->can_change_buffer_size_when_running())) {
restart_required = true;
} else {
restart_required = false;
}
if (was_running) {
if (!change_driver && !change_device && !change_channels && !change_latency && !change_midi) {
/* no changes in any parameters that absolutely require a
* restart, so check those that might be changeable without a
* restart
*/
if (change_rate && !backend->can_change_sample_rate_when_running()) {
/* can't do this while running ... */
restart_required = true;
}
if (change_bufsize && !backend->can_change_buffer_size_when_running()) {
/* can't do this while running ... */
restart_required = true;
}
}
}
if (was_running) {
if (restart_required) {
if (ARDOUR_UI::instance()->disconnect_from_engine ()) {
return -1;
}
}
}
if (change_driver && backend->set_driver (get_driver())) {
error << string_compose (_("Cannot set driver to %1"), get_driver()) << endmsg;
return -1;
}
if (change_device && backend->set_device_name (get_device_name())) {
error << string_compose (_("Cannot set device name to %1"), get_device_name()) << endmsg;
return -1;
}
if (change_rate && backend->set_sample_rate (get_rate())) {
error << string_compose (_("Cannot set sample rate to %1"), get_rate()) << endmsg;
return -1;
}
if (change_bufsize && backend->set_buffer_size (get_buffer_size())) {
error << string_compose (_("Cannot set buffer size to %1"), get_buffer_size()) << endmsg;
return -1;
}
if (change_channels || get_input_channels() == 0 || get_output_channels() == 0) {
if (backend->set_input_channels (get_input_channels())) {
error << string_compose (_("Cannot set input channels to %1"), get_input_channels()) << endmsg;
return -1;
}
if (backend->set_output_channels (get_output_channels())) {
error << string_compose (_("Cannot set output channels to %1"), get_output_channels()) << endmsg;
return -1;
}
}
if (change_latency) {
if (backend->set_systemic_input_latency (get_input_latency())) {
error << string_compose (_("Cannot set input latency to %1"), get_input_latency()) << endmsg;
return -1;
}
if (backend->set_systemic_output_latency (get_output_latency())) {
error << string_compose (_("Cannot set output latency to %1"), get_output_latency()) << endmsg;
return -1;
}
}
if (change_midi) {
backend->set_midi_option (get_midi_option());
}
if (start || (was_running && restart_required)) {
if (ARDOUR_UI::instance()->reconnect_to_engine()) {
return -1;
}
}
post_push ();
return 0;
}
void
EngineControl::post_push ()
{
/* get a pointer to the current state object, creating one if
* necessary
*/
if (_have_control) {
State* state = get_saved_state_for_currently_displayed_backend_and_device ();
if (!state) {
state = save_state ();
assert (state);
}
/* all off */
for (StateList::iterator i = states.begin(); i != states.end(); ++i) {
(*i).active = false;
}
/* mark this one active (to be used next time the dialog is
* shown)
*/
state->active = true;
manage_control_app_sensitivity ();
}
/* schedule a redisplay of MIDI ports */
Glib::signal_timeout().connect (sigc::bind_return (sigc::mem_fun (*this, &EngineControl::refresh_midi_display), false), 1000);
}
float
EngineControl::get_rate () const
{
float r = atof (sample_rate_combo.get_active_text ());
/* the string may have been translated with an abbreviation for
* thousands, so use a crude heuristic to fix this.
*/
if (r < 1000.0) {
r *= 1000.0;
}
return r;
}
uint32_t
EngineControl::get_buffer_size () const
{
string txt = buffer_size_combo.get_active_text ();
uint32_t samples;
if (sscanf (txt.c_str(), "%d", &samples) != 1) {
throw exception ();
}
return samples;
}
string
EngineControl::get_midi_option () const
{
return midi_option_combo.get_active_text();
}
uint32_t
EngineControl::get_input_channels() const
{
return (uint32_t) input_channels_adjustment.get_value();
}
uint32_t
EngineControl::get_output_channels() const
{
return (uint32_t) output_channels_adjustment.get_value();
}
uint32_t
EngineControl::get_input_latency() const
{
return (uint32_t) input_latency_adjustment.get_value();
}
uint32_t
EngineControl::get_output_latency() const
{
return (uint32_t) output_latency_adjustment.get_value();
}
string
EngineControl::get_backend () const
{
return backend_combo.get_active_text ();
}
string
EngineControl::get_driver () const
{
return driver_combo.get_active_text ();
}
string
EngineControl::get_device_name () const
{
return device_combo.get_active_text ();
}
void
EngineControl::control_app_button_clicked ()
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
if (!backend) {
return;
}
backend->launch_control_app ();
}
void
EngineControl::manage_control_app_sensitivity ()
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
if (!backend) {
return;
}
string appname = backend->control_app_name();
if (appname.empty()) {
control_app_button.set_sensitive (false);
} else {
control_app_button.set_sensitive (true);
}
}
void
EngineControl::set_desired_sample_rate (uint32_t sr)
{
_desired_sample_rate = sr;
device_changed ();
}
void
EngineControl::on_switch_page (GtkNotebookPage*, guint page_num)
{
if (page_num == 0) {
cancel_button->set_sensitive (true);
ok_button->set_sensitive (true);
apply_button->set_sensitive (true);
} else {
cancel_button->set_sensitive (false);
ok_button->set_sensitive (false);
apply_button->set_sensitive (false);
}
if (page_num == midi_tab) {
/* MIDI tab */
refresh_midi_display ();
}
if (page_num == latency_tab) {
/* latency tab */
if (!ARDOUR::AudioEngine::instance()->running()) {
PBD::Unwinder<uint32_t> protect_ignore_changes (ignore_changes, ignore_changes + 1);
/* save any existing latency values */
uint32_t il = (uint32_t) input_latency.get_value ();
uint32_t ol = (uint32_t) input_latency.get_value ();
/* reset to zero so that our new test instance
will be clean of any existing latency measures.
*/
input_latency.set_value (0);
output_latency.set_value (0);
/* reset control */
input_latency.set_value (il);
output_latency.set_value (ol);
}
if (ARDOUR::AudioEngine::instance()->prepare_for_latency_measurement()) {
disable_latency_tab ();
}
enable_latency_tab ();
} else {
if (lm_running) {
ARDOUR::AudioEngine::instance()->stop_latency_detection();
}
}
}
/* latency measurement */
bool
EngineControl::check_latency_measurement ()
{
MTDM* mtdm = ARDOUR::AudioEngine::instance()->mtdm ();
if (mtdm->resolve () < 0) {
lm_results.set_markup (string_compose (results_markup, _("No signal detected ")));
return true;
}
if (mtdm->err () > 0.3) {
mtdm->invert ();
mtdm->resolve ();
}
char buf[128];
ARDOUR::framecnt_t const sample_rate = ARDOUR::AudioEngine::instance()->sample_rate();
if (sample_rate == 0) {
lm_results.set_markup (string_compose (results_markup, _("Disconnected from audio engine")));
ARDOUR::AudioEngine::instance()->stop_latency_detection ();
return false;
}
uint32_t frames_total = mtdm->del();
uint32_t extra = frames_total - ARDOUR::AudioEngine::instance()->latency_signal_delay();
snprintf (buf, sizeof (buf), "%u samples / %.3lf ms", extra, extra * 1000.0f/sample_rate);
bool solid = true;
if (mtdm->err () > 0.2) {
strcat (buf, " ");
strcat (buf, _("(signal detection error)"));
solid = false;
}
if (mtdm->inv ()) {
strcat (buf, " ");
strcat (buf, _("(inverted - bad wiring)"));
solid = false;
}
if (solid) {
end_latency_detection ();
lm_use_button.set_sensitive (true);
have_lm_results = true;
}
lm_results.set_markup (string_compose (results_markup, string_compose (_("Detected roundtrip latency: %1"), buf)));
return true;
}
void
EngineControl::start_latency_detection ()
{
ARDOUR::AudioEngine::instance()->set_latency_input_port (lm_input_channel_combo.get_active_text());
ARDOUR::AudioEngine::instance()->set_latency_output_port (lm_output_channel_combo.get_active_text());
if (ARDOUR::AudioEngine::instance()->start_latency_detection () == 0) {
lm_results.set_markup (string_compose (results_markup, _("Detecting ...")));
latency_timeout = Glib::signal_timeout().connect (mem_fun (*this, &EngineControl::check_latency_measurement), 100);
lm_measure_label.set_text (_("Cancel"));
have_lm_results = false;
lm_use_button.set_sensitive (false);
lm_input_channel_combo.set_sensitive (false);
lm_output_channel_combo.set_sensitive (false);
lm_running = true;
}
}
void
EngineControl::end_latency_detection ()
{
latency_timeout.disconnect ();
ARDOUR::AudioEngine::instance()->stop_latency_detection ();
lm_measure_label.set_text (_("Measure"));
if (!have_lm_results) {
lm_results.set_markup (string_compose (results_markup, _("No measurement results yet")));
} else {
lm_use_button.set_sensitive (false);
}
lm_input_channel_combo.set_sensitive (true);
lm_output_channel_combo.set_sensitive (true);
lm_running = false;
}
void
EngineControl::latency_button_clicked ()
{
if (!lm_running) {
start_latency_detection ();
} else {
end_latency_detection ();
}
}
void
EngineControl::use_latency_button_clicked ()
{
MTDM* mtdm = ARDOUR::AudioEngine::instance()->mtdm ();
if (!mtdm) {
return;
}
uint32_t frames_total = mtdm->del();
uint32_t extra = frames_total - ARDOUR::AudioEngine::instance()->latency_signal_delay();
uint32_t one_way = extra/2;
input_latency_adjustment.set_value (one_way);
output_latency_adjustment.set_value (one_way);
/* back to settings page */
notebook.set_current_page (0);
}
bool
EngineControl::on_delete_event (GdkEventAny* ev)
{
if (notebook.get_current_page() == 2) {
/* currently on latency tab - be sure to clean up */
end_latency_detection ();
}
return ArdourDialog::on_delete_event (ev);
}
void
EngineControl::engine_running ()
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
assert (backend);
buffer_size_combo.set_active_text (bufsize_as_string (backend->buffer_size()));
sample_rate_combo.set_active_text (rate_as_string (backend->sample_rate()));
buffer_size_combo.set_sensitive (true);
sample_rate_combo.set_sensitive (true);
connect_disconnect_button.set_label (string_compose (_("Disconnect from %1"), backend->name()));
started_at_least_once = true;
}
void
EngineControl::engine_stopped ()
{
boost::shared_ptr<ARDOUR::AudioBackend> backend = ARDOUR::AudioEngine::instance()->current_backend();
assert (backend);
buffer_size_combo.set_sensitive (false);
connect_disconnect_button.set_label (string_compose (_("Connect to %1"), backend->name()));
sample_rate_combo.set_sensitive (true);
buffer_size_combo.set_sensitive (true);
}
void
EngineControl::connect_disconnect_click()
{
if (ARDOUR::AudioEngine::instance()->running()) {
ARDOUR_UI::instance()->disconnect_from_engine ();
} else {
ARDOUR_UI::instance()->reconnect_to_engine ();
}
}
void
EngineControl::calibrate_latency ()
{
notebook.set_current_page (latency_tab);
}
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