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Allow to tap-tempo using a MIDI keyboard

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This commit is contained in:
Robin Gareus 2022-12-30 19:28:47 +01:00
parent 1ad22e9ce9
commit 54e1827e79
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
2 changed files with 192 additions and 38 deletions
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189
gtk2_ardour/tempo_dialog.cc
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@ -5,7 +5,7 @@
* Copyright (C) 2008-2015 David Robillard <d@drobilla.net>
* Copyright (C) 2009-2010 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2014-2015 Colin Fletcher <colin.m.fletcher@googlemail.com>
* Copyright (C) 2014-2017 Robin Gareus <robin@gareus.org>
* Copyright (C) 2014-2022 Robin Gareus <robin@gareus.org>
* Copyright (C) 2015-2017 Ben Loftis <ben@harrisonconsoles.com>
* Copyright (C) 2015-2017 Nick Mainsbridge <mainsbridge@gmail.com>
*
@ -29,9 +29,14 @@
#include <gtkmm/stock.h>
#include "pbd/error.h"
#include "midi++/parser.h"
#include "ardour/audioengine.h"
#include "ardour/midi_port.h"
#include "gtkmm2ext/utils.h"
#include "gui_thread.h"
#include "tempo_dialog.h"
#include "ui_config.h"
@ -56,6 +61,7 @@ TempoDialog::TempoDialog (TempoMap::SharedPtr const & map, timepos_t const & pos
, when_bar_label (_("bar:"), ALIGN_END, ALIGN_CENTER)
, when_beat_label (_("beat:"), ALIGN_END, ALIGN_CENTER)
, pulse_selector_label (_("Pulse:"), ALIGN_START, ALIGN_CENTER)
, _tap_source_label (_("Tap Source:"), ALIGN_START, ALIGN_CENTER)
, tap_tempo_button (_("Tap tempo"))
{
Temporal::BBT_Time when (_map->bbt_at (pos));
@ -76,6 +82,7 @@ TempoDialog::TempoDialog (TempoMap::SharedPtr const & map, TempoPoint& point, co
, when_bar_label (_("bar:"), ALIGN_END, ALIGN_CENTER)
, when_beat_label (_("beat:"), ALIGN_END, ALIGN_CENTER)
, pulse_selector_label (_("Pulse:"), ALIGN_START, ALIGN_CENTER)
, _tap_source_label (_("Tap Source:"), ALIGN_START, ALIGN_CENTER)
, tap_tempo_button (_("Tap tempo"))
{
Temporal::BBT_Time when (map->bbt_at (point.time()));
@ -170,13 +177,7 @@ TempoDialog::init (const Temporal::BBT_Time& when, double bpm, double end_bpm, d
lock_style.set_active_text (strings[0]); // "music"
}
Table* table;
if (UIConfiguration::instance().get_allow_non_quarter_pulse()) {
table = manage (new Table (5, 7));
} else {
table = manage (new Table (5, 6));
}
Table* table = manage (new Table (5, 5));
table->set_spacings (6);
table->set_homogeneous (false);
@ -230,19 +231,31 @@ TempoDialog::init (const Temporal::BBT_Time& when, double bpm, double end_bpm, d
Label* when_label = manage (new Label(_("Tempo begins at"), ALIGN_START, ALIGN_CENTER));
table->attach (*when_label, 0, 1, row, row+1);
++row;
++row;
Label* lock_style_label = manage (new Label(_("Lock Style:"), ALIGN_START, ALIGN_CENTER));
table->attach (*lock_style_label, 0, 1, row, row + 1);
table->attach (lock_style, 1, 5, row, row + 1);
--row;
}
get_vbox()->set_border_width (12);
get_vbox()->pack_end (*table);
set_name ("MetricDialog");
set_resizable (false);
get_vbox ()->set_border_width (12);
get_vbox ()->set_spacing (6);
get_vbox ()->pack_end (*table, false, false);
table->show_all ();
table = manage (new Table (2, 2));
table->set_spacings (6);
row = 0;
table->attach (_tap_source_label, 0, 1, row, row + 1);
table->attach (_midi_port_combo, 1, 2, row, row + 1);
++row;
table->attach (tap_tempo_button, 0, 2, row, row + 1);
get_vbox()->pack_end (*table, false, false);
table->show_all ();
add_button (Stock::CANCEL, RESPONSE_CANCEL);
@ -250,16 +263,7 @@ TempoDialog::init (const Temporal::BBT_Time& when, double bpm, double end_bpm, d
set_response_sensitive (RESPONSE_ACCEPT, true);
set_default_response (RESPONSE_ACCEPT);
bpm_spinner.show ();
end_bpm_spinner.show ();
tap_tempo_button.show ();
get_vbox()->set_spacing (6);
get_vbox()->pack_end (tap_tempo_button);
tap_tempo_button.set_can_focus ();
tap_tempo_button.grab_focus ();
set_name ("MetricDialog");
/* connect signals */
bpm_spinner.signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &TempoDialog::response), RESPONSE_ACCEPT));
bpm_spinner.signal_button_press_event().connect (sigc::mem_fun (*this, &TempoDialog::bpm_button_press), false);
bpm_spinner.signal_button_release_event().connect (sigc::mem_fun (*this, &TempoDialog::bpm_button_release), false);
@ -275,13 +279,124 @@ TempoDialog::init (const Temporal::BBT_Time& when, double bpm, double end_bpm, d
tap_tempo_button.signal_button_press_event().connect (sigc::mem_fun (*this, &TempoDialog::tap_tempo_button_press), false);
tap_tempo_button.signal_key_press_event().connect (sigc::mem_fun (*this, &TempoDialog::tap_tempo_key_press), false);
tap_tempo_button.signal_focus_out_event().connect (sigc::mem_fun (*this, &TempoDialog::tap_tempo_focus_out));
_midi_port_combo.signal_changed().connect (sigc::mem_fun (*this, &TempoDialog::port_changed));
tempo_type_change();
/* Setup MIDI Tap */
_midi_port_list = ListStore::create (_midi_port_cols);
_midi_port_combo.set_model (_midi_port_list);
_midi_port_combo.pack_start (_midi_port_cols.pretty_name);
ARDOUR::AudioEngine::instance ()->PortRegisteredOrUnregistered.connect (_manager_connection, invalidator (*this), boost::bind (&TempoDialog::ports_changed, this), gui_context ());
boost::shared_ptr<ARDOUR::Port> port = ARDOUR::AudioEngine::instance ()->register_input_port (ARDOUR::DataType::MIDI, "Tap Tempo", false, ARDOUR::IsInput);
_midi_tap_port = boost::dynamic_pointer_cast<ARDOUR::MidiPort> (port);
assert (_midi_tap_port);
_midi_tap_parser = boost::shared_ptr<MIDI::Parser> (new MIDI::Parser);
_midi_tap_parser->any.connect_same_thread (_parser_connection, boost::bind (&TempoDialog::midi_event, this, _2, _3, _4));
_midi_tap_port->set_trace (_midi_tap_parser.get ());
_midi_tap_signal.connect (_xthread_connection, invalidator (*this), boost::bind (&TempoDialog::tap_tempo, this, _1), gui_context ());
/* init state */
tempo_type_change ();
tapped = false;
#if 0
bpm_spinner.select_region (0, -1);
bpm_spinner.grab_focus ();
#else
tap_tempo_button.set_can_focus ();
tap_tempo_button.grab_focus ();
#endif
}
tapped = false;
TempoDialog::~TempoDialog ()
{
_parser_connection.disconnect ();
ARDOUR::AudioEngine::instance ()->unregister_port (_midi_tap_port);
}
void
TempoDialog::midi_event (MIDI::byte* msg, size_t len, MIDI::samplecnt_t now)
{
/* This is called in rt-context from the main auditioengine thread */
if (len != 3) {
return;
}
uint8_t cmd = (msg[0] & 0xf0);
if (cmd == MIDI_CMD_NOTE_ON && msg[2] > 0) {
_midi_tap_signal (1e6 * now / AudioEngine::instance ()->sample_rate ()); /* EMIT SIGNAL */
} else if (cmd == MIDI_CMD_CONTROL && msg[2] > 63) {
switch (msg[1]) {
case 0x40: /* Sustain Pedal */
case 0x42: /* Sostenuto Pedal */
case 0x43: /* Soft Pedal */
_midi_tap_signal (1e6 * now / AudioEngine::instance ()->sample_rate ()); /* EMIT SIGNAL */
break;
default:
break;
}
}
}
void
TempoDialog::ports_changed ()
{
TreeModel::iterator r = _midi_port_combo.get_active ();
string cpn;
if (r) {
cpn = (*r)[_midi_port_cols.port_name];
}
_midi_port_list->clear ();
TreeModel::Row row = *_midi_port_list->append ();
row[_midi_port_cols.pretty_name] = _("Manual Tap");
row[_midi_port_cols.port_name] = "";
std::vector<std::string> pl;
ARDOUR::AudioEngine::instance ()->get_physical_inputs (ARDOUR::DataType::MIDI, pl, MidiPortFlags (0), MidiPortFlags (MidiPortControl | MidiPortVirtual));
if (pl.empty ()) {
_midi_port_combo.set_active (0);
_midi_port_combo.set_sensitive (false);
tap_tempo_button.set_sensitive (true);
bpm_spinner.set_sensitive (true);
return;
}
size_t nth = 1;
size_t act = 0;
_midi_port_combo.set_sensitive (true);
for (auto const& pn : pl) {
if (!cpn.empty () && pn == cpn) {
act = nth;
}
++nth;
row = *_midi_port_list->append ();
row[_midi_port_cols.pretty_name] = ARDOUR::AudioEngine::instance ()->get_pretty_name_by_name (pn);
row[_midi_port_cols.port_name] = pn;
}
_midi_port_combo.set_active (act);
}
void
TempoDialog::port_changed ()
{
bool rv = false;
tapped = false;
_midi_tap_port->disconnect_all ();
TreeModel::iterator r = _midi_port_combo.get_active ();
if (r) {
std::string const pn = (*r)[_midi_port_cols.port_name];
if (!pn.empty ()) {
rv = 0 == _midi_tap_port->connect (pn);
}
}
tap_tempo_button.set_sensitive (!rv);
bpm_spinner.set_sensitive (!rv);
if (!rv) {
tap_tempo_button.grab_focus ();
}
}
bool
@ -425,7 +540,7 @@ TempoDialog::lock_style_change ()
bool
TempoDialog::tap_tempo_key_press (GdkEventKey*)
{
tap_tempo ();
tap_tempo (g_get_monotonic_time ());
return false;
}
@ -438,39 +553,39 @@ TempoDialog::tap_tempo_button_press (GdkEventButton* ev)
if (ev->button != 1) {
return true;
}
tap_tempo ();
tap_tempo (g_get_monotonic_time ());
return false; // grab focus
}
void
TempoDialog::tap_tempo ()
TempoDialog::tap_tempo (int64_t usec)
{
double t;
// Linear least-squares regression
if (tapped) {
t = 1e-6 * (g_get_monotonic_time () - first_t); // Subtract first_t to avoid precision problems
t = 1e-6 * (usec - first_t); // Subtract first_t to avoid precision problems
double n = tap_count;
sum_y += t;
sum_x += n;
sum_xy += n * t;
sum_xx += n * n;
double T = (sum_xy/n - sum_x/n * sum_y/n) / (sum_xx/n - sum_x/n * sum_x/n);
double T = (sum_xy / n - sum_x / n * sum_y / n) / (sum_xx / n - sum_x / n * sum_x / n);
if (t - last_t < T / 1.2 || t - last_t > T * 1.2) {
if (t - last_t < T / 1.2 || t - last_t > T * 1.2 || T <= .06 || T > 60) {
tapped = false;
} else {
bpm_spinner.set_value (60.0 / T);
}
}
if (!tapped) {
first_t = g_get_monotonic_time ();
t = 0.0;
sum_y = 0.0;
sum_x = 1.0;
sum_xy = 0.0;
sum_xx = 1.0;
first_t = usec;
t = 0.0;
sum_y = 0.0;
sum_x = 1.0;
sum_xy = 0.0;
sum_xx = 1.0;
tap_count = 1.0;
tapped = true;

41
gtk2_ardour/tempo_dialog.h
View File

@ -30,21 +30,33 @@
#include <gtkmm/box.h>
#include <gtkmm/button.h>
#include <gtkmm/label.h>
#include <gtkmm/liststore.h>
#include <gtkmm/table.h>
#include <gtkmm/entry.h>
#include <gtkmm/spinbutton.h>
#include <gtkmm/combobox.h>
#include <gtkmm/comboboxtext.h>
#include "ardour/types.h"
#include "ardour/tempo.h"
#include "midi++/types.h"
#include "ardour_dialog.h"
namespace MIDI {
class Parser;
}
namespace ARDOUR {
class MidiPort;
}
class TempoDialog : public ArdourDialog
{
public:
TempoDialog (Temporal::TempoMap::SharedPtr const &, Temporal::timepos_t const & , const std::string & action);
TempoDialog (Temporal::TempoMap::SharedPtr const &, Temporal::TempoPoint&, const std::string & action);
~TempoDialog ();
double get_bpm ();
double get_end_bpm ();
@ -66,8 +78,11 @@ private:
bool tap_tempo_key_press (GdkEventKey*);
bool tap_tempo_button_press (GdkEventButton*);
bool tap_tempo_focus_out (GdkEventFocus* );
void port_changed ();
void ports_changed ();
void tap_tempo ();
void tap_tempo (int64_t);
void midi_event (MIDI::byte*, size_t, MIDI::samplecnt_t);
typedef std::map<std::string,int> NoteTypes;
NoteTypes note_types;
@ -98,9 +113,33 @@ private:
Gtk::Label when_bar_label;
Gtk::Label when_beat_label;
Gtk::Label pulse_selector_label;
Gtk::Label _tap_source_label;
Gtk::Button tap_tempo_button;
Gtk::ComboBoxText tempo_type;
Gtk::ComboBoxText lock_style;
Gtk::ComboBox _midi_port_combo;
class MidiPortCols : public Gtk::TreeModelColumnRecord
{
public:
MidiPortCols ()
{
add (pretty_name);
add (port_name);
}
Gtk::TreeModelColumn<std::string> pretty_name;
Gtk::TreeModelColumn<std::string> port_name;
};
MidiPortCols _midi_port_cols;
Glib::RefPtr<Gtk::ListStore> _midi_port_list;
PBD::Signal1<void, int64_t> _midi_tap_signal;
boost::shared_ptr<MIDI::Parser> _midi_tap_parser;
boost::shared_ptr<ARDOUR::MidiPort> _midi_tap_port;
PBD::ScopedConnection _parser_connection;
PBD::ScopedConnection _manager_connection;
PBD::ScopedConnection _xthread_connection;
};
class MeterDialog : public ArdourDialog