cb73eb350d
There is no need to connect signals twice, can connect them directly to the helper UI loop and skip the surface loop. Then let the server decide if it is necessary to call lws_cancel_service() or not. Also rename WebsocketsServer::should_request_write() to read_blocks_event_loop() it makes more sense for the caller now on-demand write logic is completely implemented by the server class.
290 lines
8.8 KiB
C++
290 lines
8.8 KiB
C++
/*
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* Copyright (C) 2020 Luciano Iam <oss@lucianoiam.com>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "ardour/plugin_insert.h"
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#include "ardour/session.h"
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#include "ardour/tempo.h"
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#include "pbd/abstract_ui.cc" // instantiate template
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#include "feedback.h"
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#include "transport.h"
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#include "server.h"
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#include "state.h"
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// TO DO: make this configurable
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#define POLL_INTERVAL_MS 100
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using namespace ARDOUR;
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using namespace ArdourSurface;
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struct TransportObserver {
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void operator() (ArdourFeedback* p)
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{
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p->update_all (Node::transport_roll, p->transport ().roll ());
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}
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};
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struct RecordStateObserver {
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void operator() (ArdourFeedback* p)
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{
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p->update_all (Node::transport_record, p->transport ().record ());
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}
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};
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struct TempoObserver {
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void operator() (ArdourFeedback* p)
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{
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p->update_all (Node::transport_tempo, p->transport ().tempo ());
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}
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};
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struct StripGainObserver {
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void operator() (ArdourFeedback* p, uint32_t strip_id)
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{
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// fires multiple times (4x as of ardour 6.0)
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p->update_all (Node::strip_gain, strip_id, p->mixer ().strip (strip_id).gain ());
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}
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};
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struct StripPanObserver {
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void operator() (ArdourFeedback* p, uint32_t strip_id)
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{
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p->update_all (Node::strip_pan, strip_id, p->mixer ().strip (strip_id).pan ());
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}
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};
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struct StripMuteObserver {
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void operator() (ArdourFeedback* p, uint32_t strip_id)
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{
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p->update_all (Node::strip_mute, strip_id, p->mixer ().strip (strip_id).mute ());
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}
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};
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struct PluginBypassObserver {
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void operator() (ArdourFeedback* p, uint32_t strip_id, uint32_t plugin_id)
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{
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p->update_all (Node::strip_plugin_enable, strip_id, plugin_id,
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p->mixer ().strip (strip_id).plugin (plugin_id).enabled ());
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}
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};
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struct PluginParamValueObserver {
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void operator() (ArdourFeedback* p, uint32_t strip_id, uint32_t plugin_id,
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uint32_t param_id, boost::weak_ptr<AutomationControl> ctrl)
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{
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boost::shared_ptr<AutomationControl> control = ctrl.lock ();
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if (!control) {
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return;
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}
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p->update_all (Node::strip_plugin_param_value, strip_id, plugin_id, param_id,
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ArdourMixerPlugin::param_value (control));
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}
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};
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FeedbackHelperUI::FeedbackHelperUI()
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: AbstractUI<BaseUI::BaseRequestObject> ("feedback_helper")
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{
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pthread_set_name ("test_ui_thread"); // FIXME - needed?
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run_loop_thread = Glib::Threads::Thread::self ();
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set_event_loop_for_thread (this);
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ARDOUR::SessionEvent::create_per_thread_pool ("test", 512); // FIXME - needed?
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}
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void
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FeedbackHelperUI::do_request (BaseUI::BaseRequestObject* req) {
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if (req->type == CallSlot) {
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call_slot (MISSING_INVALIDATOR, req->the_slot);
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} else if (req->type == Quit) {
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quit ();
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}
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};
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int
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ArdourFeedback::start ()
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{
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observe_transport ();
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observe_mixer ();
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// some values need polling like the strip meters
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Glib::RefPtr<Glib::TimeoutSource> periodic_timeout = Glib::TimeoutSource::create (POLL_INTERVAL_MS);
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_periodic_connection = periodic_timeout->connect (sigc::mem_fun (*this,
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&ArdourFeedback::poll));
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// server must be started before feedback otherwise
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// should_request_write() will always return false
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if (server ().read_blocks_event_loop ()) {
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_helper.run();
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periodic_timeout->attach (_helper.main_loop()->get_context ());
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} else {
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periodic_timeout->attach (main_loop ()->get_context ());
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}
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return 0;
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}
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int
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ArdourFeedback::stop ()
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{
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if (server ().read_blocks_event_loop ()) {
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_helper.quit();
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}
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_periodic_connection.disconnect ();
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_transport_connections.drop_connections ();
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return 0;
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}
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void
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ArdourFeedback::update_all (std::string node, TypedValue value) const
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{
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update_all (node, ADDR_NONE, ADDR_NONE, ADDR_NONE, value);
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}
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void
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ArdourFeedback::update_all (std::string node, uint32_t strip_id, TypedValue value) const
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{
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update_all (node, strip_id, ADDR_NONE, ADDR_NONE, value);
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}
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void
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ArdourFeedback::update_all (std::string node, uint32_t strip_id, uint32_t plugin_id,
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TypedValue value) const
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{
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update_all (node, strip_id, plugin_id, ADDR_NONE, value);
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}
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void
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ArdourFeedback::update_all (std::string node, uint32_t strip_id, uint32_t plugin_id, uint32_t param_id,
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TypedValue value) const
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{
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AddressVector addr = AddressVector ();
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if (strip_id != ADDR_NONE) {
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addr.push_back (strip_id);
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}
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if (plugin_id != ADDR_NONE) {
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addr.push_back (plugin_id);
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}
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if (param_id != ADDR_NONE) {
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addr.push_back (param_id);
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}
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ValueVector val = ValueVector ();
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val.push_back (value);
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server ().update_all_clients (NodeState (node, addr, val), false);
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}
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PBD::EventLoop*
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ArdourFeedback::event_loop () const
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{
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if (server ().read_blocks_event_loop ()) {
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return static_cast<PBD::EventLoop*> (&_helper);
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} else {
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return SurfaceComponent::event_loop ();
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}
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}
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bool
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ArdourFeedback::poll () const
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{
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update_all (Node::transport_time, transport ().time ());
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Glib::Threads::Mutex::Lock lock (mixer ().mutex ());
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for (ArdourMixer::StripMap::iterator it = mixer ().strips ().begin (); it != mixer ().strips ().end (); ++it) {
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double db = it->second->meter_level_db ();
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update_all (Node::strip_meter, it->first, db);
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}
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return true;
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}
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void
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ArdourFeedback::observe_transport ()
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{
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ARDOUR::Session& sess = session ();
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sess.TransportStateChange.connect (_transport_connections, MISSING_INVALIDATOR,
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boost::bind<void> (TransportObserver (), this), event_loop ());
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sess.RecordStateChanged.connect (_transport_connections, MISSING_INVALIDATOR,
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boost::bind<void> (RecordStateObserver (), this), event_loop ());
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sess.tempo_map ().PropertyChanged.connect (_transport_connections, MISSING_INVALIDATOR,
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boost::bind<void> (TempoObserver (), this), event_loop ());
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}
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void
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ArdourFeedback::observe_mixer ()
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{
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for (ArdourMixer::StripMap::iterator it = mixer().strips().begin(); it != mixer().strips().end(); ++it) {
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uint32_t strip_id = it->first;
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boost::shared_ptr<ArdourMixerStrip> strip = it->second;
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boost::shared_ptr<Stripable> stripable = strip->stripable ();
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stripable->gain_control ()->Changed.connect (*it->second, MISSING_INVALIDATOR,
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boost::bind<void> (StripGainObserver (), this, strip_id), event_loop ());
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if (stripable->pan_azimuth_control ()) {
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stripable->pan_azimuth_control ()->Changed.connect (*it->second, MISSING_INVALIDATOR,
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boost::bind<void> (StripPanObserver (), this, strip_id), event_loop ());
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}
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stripable->mute_control ()->Changed.connect (*it->second, MISSING_INVALIDATOR,
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boost::bind<void> (StripMuteObserver (), this, strip_id), event_loop ());
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observe_strip_plugins (strip_id, strip->plugins ());
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}
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}
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void
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ArdourFeedback::observe_strip_plugins (uint32_t strip_id, ArdourMixerStrip::PluginMap& plugins)
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{
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for (ArdourMixerStrip::PluginMap::iterator it = plugins.begin(); it != plugins.end(); ++it) {
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uint32_t plugin_id = it->first;
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boost::shared_ptr<ArdourMixerPlugin> plugin = it->second;
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boost::shared_ptr<PluginInsert> insert = plugin->insert ();
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uint32_t bypass = insert->plugin ()->designated_bypass_port ();
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Evoral::Parameter param = Evoral::Parameter (PluginAutomation, 0, bypass);
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boost::shared_ptr<AutomationControl> control = insert->automation_control (param);
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if (control) {
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control->Changed.connect (*plugin, MISSING_INVALIDATOR,
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boost::bind<void> (PluginBypassObserver (), this, strip_id, plugin_id), event_loop ());
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}
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for (uint32_t param_id = 0; param_id < plugin->param_count (); ++param_id) {
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try {
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boost::shared_ptr<AutomationControl> control = plugin->param_control (param_id);
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control->Changed.connect (*plugin, MISSING_INVALIDATOR,
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boost::bind<void> (PluginParamValueObserver (), this, strip_id, plugin_id, param_id,
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boost::weak_ptr<AutomationControl>(control)),
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event_loop ());
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} catch (ArdourMixerNotFoundException& e) {
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/* ignore */
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}
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}
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}
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}
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