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livetrax/libs/surfaces/us2400/strip.cc

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/*
Copyright (C) 2006,2007 John Anderson
Copyright (C) 2012 Paul Davis
Copyright (C) 2017 Ben Loftis
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 <sstream>
#include <vector>
#include <climits>
#include <stdint.h>
#include <sys/time.h>
#include <glibmm/convert.h>
#include "midi++/port.h"
#include "pbd/compose.h"
#include "pbd/convert.h"
#include "ardour/amp.h"
#include "ardour/bundle.h"
#include "ardour/debug.h"
#include "ardour/midi_ui.h"
#include "ardour/meter.h"
#include "ardour/monitor_control.h"
#include "ardour/plugin_insert.h"
#include "ardour/pannable.h"
#include "ardour/panner.h"
#include "ardour/panner_shell.h"
#include "ardour/phase_control.h"
#include "ardour/rc_configuration.h"
#include "ardour/record_enable_control.h"
#include "ardour/route.h"
#include "ardour/session.h"
#include "ardour/send.h"
#include "ardour/solo_isolate_control.h"
#include "ardour/track.h"
#include "ardour/midi_track.h"
#include "ardour/user_bundle.h"
#include "ardour/profile.h"
#include "ardour/value_as_string.h"
#include "us2400_control_protocol.h"
#include "surface_port.h"
#include "surface.h"
#include "strip.h"
#include "button.h"
#include "led.h"
#include "pot.h"
#include "fader.h"
#include "jog.h"
#include "meter.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace ArdourSurface;
using namespace US2400;
#ifndef timeradd /// only avail with __USE_BSD
#define timeradd(a,b,result) \
do { \
(result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \
(result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \
if ((result)->tv_usec >= 1000000) \
{ \
++(result)->tv_sec; \
(result)->tv_usec -= 1000000; \
} \
} while (0)
#endif
#define ui_context() US2400Protocol::instance() /* a UICallback-derived object that specifies the event loop for signal handling */
Strip::Strip (Surface& s, const std::string& name, int index, const map<Button::ID,StripButtonInfo>& strip_buttons)
: Group (name)
, _solo (0)
, _mute (0)
, _select (0)
, _fader_touch (0)
, _vpot (0)
, _fader (0)
, _meter (0)
, _index (index)
, _surface (&s)
, _controls_locked (false)
, _transport_is_rolling (false)
, _metering_active (true)
, _pan_mode (PanAzimuthAutomation)
{
_fader = dynamic_cast<Fader*> (Fader::factory (*_surface, index, "fader", *this));
_vpot = dynamic_cast<Pot*> (Pot::factory (*_surface, Pot::ID + index, "vpot", *this));
if (s.mcp().device_info().has_meters()) {
_meter = dynamic_cast<Meter*> (Meter::factory (*_surface, index, "meter", *this));
}
for (map<Button::ID,StripButtonInfo>::const_iterator b = strip_buttons.begin(); b != strip_buttons.end(); ++b) {
Button* bb = dynamic_cast<Button*> (Button::factory (*_surface, b->first, b->second.base_id + index, b->second.name, *this));
DEBUG_TRACE (DEBUG::US2400, string_compose ("surface %1 strip %2 new button BID %3 id %4 from base %5\n",
_surface->number(), index, Button::id_to_name (bb->bid()),
bb->id(), b->second.base_id));
}
_trickle_counter = 0;
}
Strip::~Strip ()
{
/* surface is responsible for deleting all controls */
}
void
Strip::add (Control & control)
{
Button* button;
Group::add (control);
/* fader, vpot, meter were all set explicitly */
if ((button = dynamic_cast<Button*>(&control)) != 0) {
switch (button->bid()) {
case Button::Mute:
_mute = button;
break;
case Button::Solo:
_solo = button;
break;
case Button::Select:
_select = button;
break;
case Button::FaderTouch:
_fader_touch = button;
break;
default:
break;
}
}
}
void
Strip::set_stripable (boost::shared_ptr<Stripable> r, bool /*with_messages*/)
{
if (_controls_locked) {
return;
}
stripable_connections.drop_connections ();
_solo->set_control (boost::shared_ptr<AutomationControl>());
_mute->set_control (boost::shared_ptr<AutomationControl>());
_select->set_control (boost::shared_ptr<AutomationControl>());
_fader->set_control (boost::shared_ptr<AutomationControl>());
_vpot->set_control (boost::shared_ptr<AutomationControl>());
_stripable = r;
mark_dirty ();
if (!r) {
DEBUG_TRACE (DEBUG::US2400, string_compose ("Surface %1 Strip %2 mapped to null route\n", _surface->number(), _index));
zero ();
return;
}
DEBUG_TRACE (DEBUG::US2400, string_compose ("Surface %1 strip %2 now mapping stripable %3\n",
_surface->number(), _index, _stripable->name()));
_solo->set_control (_stripable->solo_control());
_mute->set_control (_stripable->mute_control());
_stripable->solo_control()->Changed.connect (stripable_connections, MISSING_INVALIDATOR, boost::bind (&Strip::notify_solo_changed, this), ui_context());
_stripable->mute_control()->Changed.connect(stripable_connections, MISSING_INVALIDATOR, boost::bind (&Strip::notify_mute_changed, this), ui_context());
boost::shared_ptr<AutomationControl> pan_control = _stripable->pan_azimuth_control();
if (pan_control) {
pan_control->Changed.connect(stripable_connections, MISSING_INVALIDATOR, boost::bind (&Strip::notify_panner_azi_changed, this, false), ui_context());
}
pan_control = _stripable->pan_width_control();
if (pan_control) {
pan_control->Changed.connect(stripable_connections, MISSING_INVALIDATOR, boost::bind (&Strip::notify_panner_width_changed, this, false), ui_context());
}
_stripable->gain_control()->Changed.connect(stripable_connections, MISSING_INVALIDATOR, boost::bind (&Strip::notify_gain_changed, this, false), ui_context());
_stripable->PropertyChanged.connect (stripable_connections, MISSING_INVALIDATOR, boost::bind (&Strip::notify_property_changed, this, _1), ui_context());
_stripable->presentation_info().PropertyChanged.connect (stripable_connections, MISSING_INVALIDATOR, boost::bind (&Strip::notify_property_changed, this, _1), ui_context());
// TODO this works when a currently-banked stripable is made inactive, but not
// when a stripable is activated which should be currently banked.
_stripable->DropReferences.connect (stripable_connections, MISSING_INVALIDATOR, boost::bind (&Strip::notify_stripable_deleted, this), ui_context());
/* setup legal VPot modes for this stripable */
possible_pot_parameters.clear();
if (_stripable->pan_azimuth_control()) {
possible_pot_parameters.push_back (PanAzimuthAutomation);
}
if (_stripable->pan_width_control()) {
possible_pot_parameters.push_back (PanWidthAutomation);
}
if (_stripable->pan_elevation_control()) {
possible_pot_parameters.push_back (PanElevationAutomation);
}
if (_stripable->pan_frontback_control()) {
possible_pot_parameters.push_back (PanFrontBackAutomation);
}
if (_stripable->pan_lfe_control()) {
possible_pot_parameters.push_back (PanLFEAutomation);
}
_pan_mode = PanAzimuthAutomation;
if (_surface->mcp().subview_mode() == US2400Protocol::None) {
set_vpot_parameter (_pan_mode);
}
_fader->set_control (_stripable->gain_control());
notify_all ();
}
void
Strip::reset_stripable ()
{
stripable_connections.drop_connections ();
_solo->set_control (boost::shared_ptr<AutomationControl>());
_mute->set_control (boost::shared_ptr<AutomationControl>());
_select->set_control (boost::shared_ptr<AutomationControl>());
_fader->reset_control ();
_vpot->reset_control ();
_stripable.reset();
mark_dirty ();
notify_all ();
}
void
Strip::notify_all()
{
// if (!_stripable) {
// zero ();
// return;
// }
// The active V-pot control may not be active for this strip
// But if we zero it in the controls function it may erase
// the one we do want
// _surface->write (_vpot->zero());
notify_solo_changed ();
notify_mute_changed ();
notify_gain_changed ();
notify_property_changed (PBD::PropertyChange (ARDOUR::Properties::name));
notify_property_changed (PBD::PropertyChange (ARDOUR::Properties::selected));
notify_panner_azi_changed ();
notify_vpot_change ();
notify_panner_width_changed ();
notify_record_enable_changed ();
// notify_processor_changed ();
}
void
Strip::notify_solo_changed ()
{
// if (_stripable && _solo) {
// _surface->write (_solo->set_state (_stripable->solo_control()->soloed() ? on : off));
// }
_solo->mark_dirty ();
_trickle_counter = 0;
}
void
Strip::notify_mute_changed ()
{
DEBUG_TRACE (DEBUG::US2400, string_compose ("Strip %1 mute changed\n", _index));
// if (_stripable && _mute) {
// DEBUG_TRACE (DEBUG::US2400, string_compose ("\tstripable muted ? %1\n", _stripable->mute_control()->muted()));
// DEBUG_TRACE (DEBUG::US2400, string_compose ("mute message: %1\n", _mute->set_state (_stripable->mute_control()->muted() ? on : off)));
//
// _surface->write (_mute->set_state (_stripable->mute_control()->muted() ? on : off));
// } else {
// _surface->write (_mute->zero());
// }
_mute->mark_dirty ();
_trickle_counter = 0;
}
void
Strip::notify_record_enable_changed ()
{
}
void
Strip::notify_stripable_deleted ()
{
_surface->mcp().notify_stripable_removed ();
_surface->mcp().refresh_current_bank();
}
void
Strip::notify_gain_changed (bool force_update)
{
_fader->mark_dirty();
_trickle_counter = 0;
}
void
Strip::notify_processor_changed (bool force_update)
{
}
void
Strip::notify_property_changed (const PropertyChange& what_changed)
{
}
void
Strip::update_selection_state ()
{
_select->mark_dirty ();
_trickle_counter = 0;
// if(_stripable) {
// _surface->write (_select->set_state (_stripable->is_selected()));
// }
}
void
Strip::show_stripable_name ()
{
}
void
Strip::notify_vpot_change ()
{
_vpot->mark_dirty();
_trickle_counter = 0;
}
void
Strip::notify_panner_azi_changed (bool force_update)
{
_vpot->mark_dirty();
_trickle_counter = 0;
}
void
Strip::notify_panner_width_changed (bool force_update)
{
_trickle_counter = 0;
}
void
Strip::select_event (Button&, ButtonState bs)
{
DEBUG_TRACE (DEBUG::US2400, "select button\n");
if (bs == press) {
int ms = _surface->mcp().main_modifier_state();
if (ms & US2400Protocol::MODIFIER_CMDALT) {
_controls_locked = !_controls_locked;
return;
}
DEBUG_TRACE (DEBUG::US2400, "add select button on press\n");
_surface->mcp().add_down_select_button (_surface->number(), _index);
_surface->mcp().select_range (_surface->mcp().global_index (*this));
} else {
DEBUG_TRACE (DEBUG::US2400, "remove select button on release\n");
_surface->mcp().remove_down_select_button (_surface->number(), _index);
}
_trickle_counter = 0;
}
void
Strip::vselect_event (Button&, ButtonState bs)
{
}
void
Strip::fader_touch_event (Button&, ButtonState bs)
{
DEBUG_TRACE (DEBUG::US2400, string_compose ("fader touch, press ? %1\n", (bs == press)));
if (bs == press) {
boost::shared_ptr<AutomationControl> ac = _fader->control ();
_fader->set_in_use (true);
_fader->start_touch (_surface->mcp().transport_frame());
} else {
_fader->set_in_use (false);
_fader->stop_touch (_surface->mcp().transport_frame());
}
}
void
Strip::handle_button (Button& button, ButtonState bs)
{
boost::shared_ptr<AutomationControl> control;
if (bs == press) {
button.set_in_use (true);
} else {
button.set_in_use (false);
}
DEBUG_TRACE (DEBUG::US2400, string_compose ("strip %1 handling button %2 press ? %3\n", _index, button.bid(), (bs == press)));
switch (button.bid()) {
case Button::Select:
select_event (button, bs);
break;
case Button::FaderTouch:
fader_touch_event (button, bs);
break;
default:
if ((control = button.control ())) {
if (bs == press) {
DEBUG_TRACE (DEBUG::US2400, "add button on press\n");
_surface->mcp().add_down_button ((AutomationType) control->parameter().type(), _surface->number(), _index);
float new_value = control->get_value() ? 0.0 : 1.0;
/* get all controls that either have their
* button down or are within a range of
* several down buttons
*/
US2400Protocol::ControlList controls = _surface->mcp().down_controls ((AutomationType) control->parameter().type(),
_surface->mcp().global_index(*this));
DEBUG_TRACE (DEBUG::US2400, string_compose ("there are %1 buttons down for control type %2, new value = %3\n",
controls.size(), control->parameter().type(), new_value));
/* apply change, with potential modifier semantics */
Controllable::GroupControlDisposition gcd;
if (_surface->mcp().main_modifier_state() & US2400Protocol::MODIFIER_SHIFT) {
gcd = Controllable::InverseGroup;
} else {
gcd = Controllable::UseGroup;
}
for (US2400Protocol::ControlList::iterator c = controls.begin(); c != controls.end(); ++c) {
(*c)->set_value (new_value, gcd);
}
} else {
DEBUG_TRACE (DEBUG::US2400, "remove button on release\n");
_surface->mcp().remove_down_button ((AutomationType) control->parameter().type(), _surface->number(), _index);
}
}
break;
}
}
void
Strip::handle_fader_touch (Fader& fader, bool touch_on)
{
if (touch_on) {
fader.start_touch (_surface->mcp().transport_frame());
} else {
fader.stop_touch (_surface->mcp().transport_frame());
}
}
void
Strip::handle_fader (Fader& fader, float position)
{
DEBUG_TRACE (DEBUG::US2400, string_compose ("fader to %1\n", position));
boost::shared_ptr<AutomationControl> ac = fader.control();
if (!ac) {
return;
}
Controllable::GroupControlDisposition gcd = Controllable::UseGroup;
if (_surface->mcp().main_modifier_state() & US2400Protocol::MODIFIER_SHIFT) {
gcd = Controllable::InverseGroup;
}
fader.set_value (position, gcd);
/* From the Mackie Control MIDI implementation docs:
In order to ensure absolute synchronization with the host software,
Mackie Control uses a closed-loop servo system for the faders,
meaning the faders will always move to their last received position.
When a host receives a Fader Position Message, it must then
re-transmit that message to the Mackie Control or else the faders
will return to their last position.
*/
_surface->write (fader.set_position (position));
}
void
Strip::handle_pot (Pot& pot, float delta)
{
/* Pots only emit events when they move, not when they
stop moving. So to get a stop event, we need to use a timeout.
*/
boost::shared_ptr<AutomationControl> ac = pot.control();
if (!ac) {
return;
}
Controllable::GroupControlDisposition gcd;
if (_surface->mcp().main_modifier_state() & US2400Protocol::MODIFIER_SHIFT) {
gcd = Controllable::InverseGroup;
} else {
gcd = Controllable::UseGroup;
}
if (ac->toggled()) {
/* make it like a single-step, directional switch */
if (delta > 0) {
ac->set_value (1.0, gcd);
} else {
ac->set_value (0.0, gcd);
}
} else if (ac->desc().enumeration || ac->desc().integer_step) {
/* use Controllable::get_value() to avoid the
* "scaling-to-interface" that takes place in
* Control::get_value() via the pot member.
*
* an enumeration with 4 values will have interface values of
* 0.0, 0.25, 0.5 and 0.75 or some similar oddness. Lets not
* deal with that.
*/
if (delta > 0) {
ac->set_value (min (ac->upper(), ac->get_value() + 1.0), gcd);
} else {
ac->set_value (max (ac->lower(), ac->get_value() - 1.0), gcd);
}
} else {
double p = ac->get_interface();
p += delta;
p = max (0.0, p);
p = min (1.0, p);
ac->set_value ( ac->interface_to_internal(p), gcd);
}
}
void
Strip::periodic (ARDOUR::microseconds_t now)
{
update_meter ();
if ( _trickle_counter %24 == 0 ) {
if ( _fader->control() ) {
_surface->write (_fader->set_position (_fader->control()->internal_to_interface (_fader->control()->get_value ())));
} else {
_surface->write (_fader->set_position(0.0));
}
if ( _vpot->control() ) {
_surface->write (_vpot->set (_vpot->control()->internal_to_interface (_vpot->control()->get_value ()), true));
} else {
_surface->write (_vpot->set(0.0, false));
}
if (_stripable) {
_surface->write (_solo->set_state (_stripable->solo_control()->soloed() ? on : off));
_surface->write (_mute->set_state (_stripable->mute_control()->muted() ? on : off));
_surface->write (_select->set_state (_stripable->is_selected()));
} else {
_surface->write (_solo->set_state (off));
_surface->write (_mute->set_state (off));
_surface->write (_select->set_state (off));
}
}
//after a hard write, queue us for trickling data later
if (_trickle_counter == 0)
_trickle_counter = global_index()+1;
_trickle_counter++;
}
void
Strip::redisplay (ARDOUR::microseconds_t now, bool force)
{
}
void
Strip::update_automation ()
{
}
void
Strip::update_meter ()
{
if (!_stripable) {
return;
}
if (_meter && _transport_is_rolling && _metering_active && _stripable->peak_meter()) {
float dB = _stripable->peak_meter()->meter_level (0, MeterMCP);
_meter->send_update (*_surface, dB);
return;
}
}
void
Strip::zero ()
{
_trickle_counter = 0;
}
void
Strip::lock_controls ()
{
_controls_locked = true;
}
void
Strip::unlock_controls ()
{
_controls_locked = false;
}
string
Strip::vpot_mode_string ()
{
return "???";
}
void
Strip::next_pot_mode ()
{
vector<AutomationType>::iterator i;
boost::shared_ptr<AutomationControl> ac = _vpot->control();
if (!ac) {
return;
}
if (_surface->mcp().subview_mode() != US2400Protocol::None) {
return;
}
if (possible_pot_parameters.empty() || (possible_pot_parameters.size() == 1 && possible_pot_parameters.front() == ac->parameter().type())) {
return;
}
for (i = possible_pot_parameters.begin(); i != possible_pot_parameters.end(); ++i) {
if ((*i) == ac->parameter().type()) {
break;
}
}
/* move to the next mode in the list, or back to the start (which will
also happen if the current mode is not in the current pot mode list)
*/
if (i != possible_pot_parameters.end()) {
++i;
}
if (i == possible_pot_parameters.end()) {
i = possible_pot_parameters.begin();
}
set_vpot_parameter (*i);
}
void
/*
*
* name: Strip::subview_mode_changed
* @param
* @return
*
*/
Strip::subview_mode_changed ()
{
switch (_surface->mcp().subview_mode()) {
case US2400Protocol::None:
set_vpot_parameter (_pan_mode);
notify_metering_state_changed ();
break;
case US2400Protocol::TrackView:
boost::shared_ptr<Stripable> r = _surface->mcp().subview_stripable();
if (r) {
DEBUG_TRACE (DEBUG::US2400, string_compose("subview_mode_changed strip %1:%2- assigning trackview pot\n", _surface->number(), _index));
setup_trackview_vpot (r);
} else {
DEBUG_TRACE (DEBUG::US2400, string_compose("subview_mode_changed strip %1:%2 - no stripable\n", _surface->number(), _index));
}
break;
}
_trickle_counter = 0;
}
void
Strip::setup_dyn_vpot (boost::shared_ptr<Stripable> r)
{
}
void
Strip::setup_eq_vpot (boost::shared_ptr<Stripable> r)
{
}
void
Strip::setup_sends_vpot (boost::shared_ptr<Stripable> r)
{
}
void
Strip::setup_trackview_vpot (boost::shared_ptr<Stripable> r)
{
subview_connections.drop_connections ();
if (!r) {
return;
}
const uint32_t global_pos = _surface->mcp().global_index (*this);
boost::shared_ptr<AutomationControl> pc;
boost::shared_ptr<Track> track = boost::dynamic_pointer_cast<Track> (r);
string label;
_vpot->set_mode(Pot::wrap);
#ifdef MIXBUS
//Trim & dynamics
switch (global_pos) {
case 0:
pc = r->trim_control ();
_vpot->set_mode(Pot::boost_cut);
break;
case 1:
pc = r->pan_azimuth_control ();
_vpot->set_mode(Pot::dot);
break;
case 2:
pc = r->comp_threshold_controllable();
break;
case 3:
pc = r->comp_speed_controllable();
break;
case 4:
pc = r->comp_mode_controllable();
_vpot->set_mode(Pot::wrap);
break;
case 5:
pc = r->comp_makeup_controllable();
break;
} //trim & dynamics
//EQ
int eq_band = -1;
if (r->mixbus () || r->is_master()) {
switch (global_pos) {
case 6:
pc = r->pan_width_control();
break;
case 7:
pc = r->tape_drive_controllable();
break;
case 8:
case 9:
case 10:
eq_band = (global_pos-8);
pc = r->eq_gain_controllable (eq_band);
_vpot->set_mode(Pot::boost_cut);
break;
}
} else if (r->is_input_strip ()) {
#ifdef MIXBUS32C
switch (global_pos) {
case 6:
pc = r->filter_freq_controllable(true);
break;
case 7:
pc = r->filter_freq_controllable(false);
break;
case 8:
case 10:
case 12:
case 14: {
eq_band = (global_pos-8) / 2;
pc = r->eq_freq_controllable (eq_band);
} break;
case 9:
case 11:
case 13:
case 15: {
eq_band = (global_pos-8) / 2;
pc = r->eq_gain_controllable (eq_band);
_vpot->set_mode(Pot::boost_cut);
} break;
}
#else //regular Mixbus channel EQ
switch (global_pos) {
case 7:
pc = r->filter_freq_controllable(true);
break;
case 8:
case 10:
case 12:
eq_band = (global_pos-8) / 2;
pc = r->eq_gain_controllable (eq_band);
_vpot->set_mode(Pot::boost_cut);
break;
case 9:
case 11:
case 13:
eq_band = (global_pos-8) / 2;
pc = r->eq_freq_controllable (eq_band);
break;
}
#endif
//mixbus sends
switch (global_pos) {
case 16:
case 17:
case 18:
case 19:
case 20:
case 21:
case 22:
case 23:
pc = r->send_level_controllable ( global_pos - 16 );
break;
} //global_pos switch
} //if input_strip
#endif //ifdef MIXBUS
if (pc) { //control found; set our knob to watch for changes in it
_vpot->set_control (pc);
pc->Changed.connect (subview_connections, MISSING_INVALIDATOR, boost::bind (&Strip::notify_vpot_change, this), ui_context());
} else { //no control, just set the knob to "empty"
_vpot->reset_control ();
}
notify_vpot_change ();
}
void
Strip::set_vpot_parameter (AutomationType p)
{
if (!_stripable || (p == NullAutomation)) {
_vpot->set_control (boost::shared_ptr<AutomationControl>());
return;
}
boost::shared_ptr<AutomationControl> pan_control;
DEBUG_TRACE (DEBUG::US2400, string_compose ("switch to vpot mode %1\n", p));
mark_dirty ();
switch (p) {
case PanAzimuthAutomation:
pan_control = _stripable->pan_azimuth_control ();
break;
case PanWidthAutomation:
pan_control = _stripable->pan_width_control ();
break;
case PanElevationAutomation:
break;
case PanFrontBackAutomation:
break;
case PanLFEAutomation:
break;
default:
return;
}
if (pan_control) {
_pan_mode = p;
_vpot->set_mode (Pot::dot);
_vpot->set_control (pan_control);
}
notify_panner_azi_changed (true);
}
bool
Strip::is_midi_track () const
{
return boost::dynamic_pointer_cast<MidiTrack>(_stripable) != 0;
}
void
Strip::mark_dirty ()
{
_fader->mark_dirty();
_vpot->mark_dirty();
_solo->mark_dirty();
_mute->mark_dirty();
_trickle_counter=0;
}
void
Strip::notify_metering_state_changed()
{
if (_surface->mcp().subview_mode() != US2400Protocol::None) {
return;
}
if (!_stripable || !_meter) {
return;
}
bool transport_is_rolling = (_surface->mcp().get_transport_speed () != 0.0f);
bool metering_active = _surface->mcp().metering_active ();
if ((_transport_is_rolling == transport_is_rolling) && (_metering_active == metering_active)) {
return;
}
_meter->notify_metering_state_changed (*_surface, transport_is_rolling, metering_active);
if (!transport_is_rolling || !metering_active) {
notify_property_changed (PBD::PropertyChange (ARDOUR::Properties::name));
notify_panner_azi_changed (true);
}
_transport_is_rolling = transport_is_rolling;
_metering_active = metering_active;
}
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