mirror of
https://github.com/Ardour/ardour.git
synced 2025-12-16 19:56:31 +01:00
convert GenericMIDI into a real control protocol module, with its own event loop and ports
This commit is contained in:
Paul Davis
parent
1ced4067aa
commit
d100c92731
2 changed files with 202 additions and 41 deletions
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@ -41,6 +41,7 @@
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#include "pbd/error.h"
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#include "pbd/failed_constructor.h"
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#include "pbd/file_utils.h"
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#include "pbd/i18n.h"
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#include "pbd/strsplit.h"
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#include "pbd/types_convert.h"
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#include "pbd/xml++.h"
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@ -63,37 +64,47 @@
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#include "midifunction.h"
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#include "midiaction.h"
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#include "pbd/abstract_ui.cc" // instantiate template
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using namespace ARDOUR;
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using namespace PBD;
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using namespace Glib;
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using namespace std;
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#include "pbd/i18n.h"
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#define midi_ui_context() MidiControlUI::instance() /* a UICallback-derived object that specifies the event loop for signal handling */
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GenericMidiControlProtocol::GenericMidiControlProtocol (Session& s)
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: ControlProtocol (s, _("Generic MIDI"))
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, AbstractUI<GenericMIDIRequest> (name())
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, connection_state (ConnectionState (0))
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, _motorised (false)
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, _threshold (10)
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, gui (0)
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{
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// _input_port = boost::dynamic_pointer_cast<AsyncMIDIPort> (s.midi_input_port ());
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// _output_port = boost::dynamic_pointer_cast<AsyncMIDIPort> (s.midi_output_port ());
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boost::shared_ptr<ARDOUR::Port> inp;
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boost::shared_ptr<ARDOUR::Port> outp;
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inp = AudioEngine::instance()->register_input_port (DataType::MIDI, _("MIDI Control In"), true);
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outp = AudioEngine::instance()->register_output_port (DataType::MIDI, _("MIDI Control Out"), true);
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if (inp == 0 || outp == 0) {
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throw failed_constructor();
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}
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_input_port = boost::dynamic_pointer_cast<AsyncMIDIPort>(inp);
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_output_port = boost::dynamic_pointer_cast<AsyncMIDIPort>(outp);
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_input_bundle.reset (new ARDOUR::Bundle (_("Generic MIDI Control In"), true));
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_output_bundle.reset (new ARDOUR::Bundle (_("Generic MIDI Control Out"), false));
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_input_bundle->add_channel (
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boost::static_pointer_cast<MidiPort>(_input_port)->name(),
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inp->name(),
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ARDOUR::DataType::MIDI,
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session->engine().make_port_name_non_relative (boost::static_pointer_cast<MidiPort>(_input_port)->name())
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session->engine().make_port_name_non_relative (inp->name())
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);
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_output_bundle->add_channel (
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boost::static_pointer_cast<MidiPort>(_output_port)->name(),
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outp->name(),
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ARDOUR::DataType::MIDI,
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session->engine().make_port_name_non_relative (boost::static_pointer_cast<MidiPort>(_output_port)->name())
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session->engine().make_port_name_non_relative (outp->name())
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);
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session->BundleAddedOrRemoved ();
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@ -105,7 +116,7 @@ GenericMidiControlProtocol::GenericMidiControlProtocol (Session& s)
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_current_bank = 0;
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_bank_size = 0;
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/* these signals are emitted by the MidiControlUI's event loop thread
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/* these signals are emitted by our event loop thread
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* and we may as well handle them right there in the same the same
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* thread
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*/
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@ -119,22 +130,36 @@ GenericMidiControlProtocol::GenericMidiControlProtocol (Session& s)
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*/
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Session::SendFeedback.connect_same_thread (*this, boost::bind (&GenericMidiControlProtocol::send_feedback, this));
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//Session::SendFeedback.connect (*this, MISSING_INVALIDATOR, boost::bind (&GenericMidiControlProtocol::send_feedback, this), midi_ui_context());;
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/* this one is cross-thread */
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PresentationInfo::Change.connect (*this, MISSING_INVALIDATOR, boost::bind (&GenericMidiControlProtocol::reset_controllables, this), midi_ui_context());
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PresentationInfo::Change.connect (*this, MISSING_INVALIDATOR, boost::bind (&GenericMidiControlProtocol::reset_controllables, this), this);
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/* Catch port connections and disconnections (cross-thread) */
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ARDOUR::AudioEngine::instance()->PortConnectedOrDisconnected.connect (port_connection, MISSING_INVALIDATOR,
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boost::bind (&GenericMidiControlProtocol::connection_handler, this, _1, _2, _3, _4, _5),
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midi_ui_context());
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this);
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reload_maps ();
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}
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GenericMidiControlProtocol::~GenericMidiControlProtocol ()
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{
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if (_input_port) {
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DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("unregistering input port %1\n", boost::shared_ptr<ARDOUR::Port>(_input_port)->name()));
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Glib::Threads::Mutex::Lock em (AudioEngine::instance()->process_lock());
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AudioEngine::instance()->unregister_port (_input_port);
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_input_port.reset ();
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}
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if (_output_port) {
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_output_port->drain (10000, 250000); /* check every 10 msecs, wait up to 1/4 second for the port to drain */
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DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("unregistering output port %1\n", boost::shared_ptr<ARDOUR::Port>(_output_port)->name()));
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Glib::Threads::Mutex::Lock em (AudioEngine::instance()->process_lock());
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AudioEngine::instance()->unregister_port (_output_port);
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_output_port.reset ();
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}
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drop_all ();
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tear_down_gui ();
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}
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@ -279,12 +304,57 @@ GenericMidiControlProtocol::drop_bindings ()
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_current_bank = 0;
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}
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int
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GenericMidiControlProtocol::set_active (bool /*yn*/)
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void
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GenericMidiControlProtocol::do_request (GenericMIDIRequest* req)
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{
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/* nothing to do here: the MIDI UI thread in libardour handles all our
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I/O needs.
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*/
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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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stop ();
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}
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}
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int
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GenericMidiControlProtocol::stop ()
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{
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BaseUI::quit ();
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return 0;
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}
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void
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GenericMidiControlProtocol::thread_init ()
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{
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pthread_set_name (event_loop_name().c_str());
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PBD::notify_event_loops_about_thread_creation (pthread_self(), event_loop_name(), 2048);
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ARDOUR::SessionEvent::create_per_thread_pool (event_loop_name(), 128);
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set_thread_priority ();
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}
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int
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GenericMidiControlProtocol::set_active (bool yn)
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{
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DEBUG_TRACE (DEBUG::GenericMidi, string_compose("GenericMIDI::set_active init with yn: '%1'\n", yn));
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if (yn == active()) {
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return 0;
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}
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if (yn) {
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BaseUI::run ();
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} else {
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BaseUI::quit ();
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}
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ControlProtocol::set_active (yn);
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DEBUG_TRACE (DEBUG::GenericMidi, string_compose("GenericMIDI::set_active done with yn: '%1'\n", yn));
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return 0;
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}
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@ -539,6 +609,17 @@ GenericMidiControlProtocol::get_state ()
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{
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XMLNode& node (ControlProtocol::get_state());
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XMLNode* child;
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child = new XMLNode (X_("Input"));
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child->add_child_nocopy (boost::shared_ptr<ARDOUR::Port>(_input_port)->get_state());
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node.add_child_nocopy (*child);
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child = new XMLNode (X_("Output"));
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child->add_child_nocopy (boost::shared_ptr<ARDOUR::Port>(_output_port)->get_state());
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node.add_child_nocopy (*child);
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node.set_property (X_("feedback-interval"), _feedback_interval);
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node.set_property (X_("threshold"), _threshold);
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node.set_property (X_("motorized"), _motorised);
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@ -572,11 +653,26 @@ GenericMidiControlProtocol::set_state (const XMLNode& node, int version)
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{
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XMLNodeList nlist;
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XMLNodeConstIterator niter;
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XMLNode const* child;
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if (ControlProtocol::set_state (node, version)) {
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return -1;
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}
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if ((child = node.child (X_("Input"))) != 0) {
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XMLNode* portnode = child->child (Port::state_node_name.c_str());
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if (portnode) {
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boost::shared_ptr<ARDOUR::Port>(_input_port)->set_state (*portnode, version);
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}
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}
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if ((child = node.child (X_("Output"))) != 0) {
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XMLNode* portnode = child->child (Port::state_node_name.c_str());
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if (portnode) {
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boost::shared_ptr<ARDOUR::Port>(_output_port)->set_state (*portnode, version);
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}
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}
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if (!node.get_property ("feedback-interval", _feedback_interval)) {
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_feedback_interval = 10000;
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}
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@ -623,15 +719,18 @@ GenericMidiControlProtocol::set_state (const XMLNode& node, int version)
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if (load_dynamic_bindings) {
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Glib::Threads::Mutex::Lock lm2 (controllables_lock);
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nlist = node.children(); // "Controls"
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XMLNode* controls_node = node.child (X_("Controls"));
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if (controls_node) {
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nlist = controls_node->children();
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if (!nlist.empty()) {
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nlist = nlist.front()->children(); // "MIDIControllable" ...
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if (!nlist.empty()) {
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for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
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PBD::ID id;
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if ((*niter)->get_property ("id", id)) {
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DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("Relearned binding for session: Control ID: %1\n", id.to_s()));
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@ -1450,10 +1549,14 @@ GenericMidiControlProtocol::set_threshold (int t)
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bool
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GenericMidiControlProtocol::connection_handler (boost::weak_ptr<ARDOUR::Port>, std::string name1, boost::weak_ptr<ARDOUR::Port>, std::string name2, bool yn)
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{
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bool input_was_connected = (connection_state & InputConnected);
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if (!_input_port || !_output_port) {
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return false;
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}
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DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("connection change: %1 and %2 connected ? %3\n", name1, name2, yn));
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string ni = ARDOUR::AudioEngine::instance()->make_port_name_non_relative (boost::shared_ptr<ARDOUR::Port>(_input_port)->name());
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string no = ARDOUR::AudioEngine::instance()->make_port_name_non_relative (boost::shared_ptr<ARDOUR::Port>(_output_port)->name());
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@ -1474,18 +1577,14 @@ GenericMidiControlProtocol::connection_handler (boost::weak_ptr<ARDOUR::Port>, s
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return false;
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}
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if ((connection_state & (InputConnected|OutputConnected)) == (InputConnected|OutputConnected)) {
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/* XXX this is a horrible hack. Without a short sleep here,
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something prevents the device wakeup messages from being
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sent and/or the responses from being received.
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*/
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g_usleep (100000);
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connected ();
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if (connection_state & InputConnected) {
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if (!input_was_connected) {
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start_midi_handling ();
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}
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} else {
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if (input_was_connected) {
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stop_midi_handling ();
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}
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}
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ConnectionChange (); /* emit signal for our GUI */
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@ -1493,11 +1592,6 @@ GenericMidiControlProtocol::connection_handler (boost::weak_ptr<ARDOUR::Port>, s
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return true; /* connection status changed */
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}
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void
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GenericMidiControlProtocol::connected ()
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{
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}
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boost::shared_ptr<Port>
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GenericMidiControlProtocol::output_port() const
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{
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@ -1518,3 +1612,52 @@ GenericMidiControlProtocol::maybe_start_touch (boost::shared_ptr<Controllable> c
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actl->start_touch (session->audible_sample ());
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}
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}
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void
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GenericMidiControlProtocol::start_midi_handling ()
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{
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/* This connection means that whenever data is ready from the input
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* port, the relevant thread will invoke our ::midi_input_handler()
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* method, which will read the data, and invoke the parser.
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*/
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_input_port->xthread().set_receive_handler (sigc::bind (sigc::mem_fun (this, &GenericMidiControlProtocol::midi_input_handler), boost::weak_ptr<AsyncMIDIPort> (_input_port)));
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_input_port->xthread().attach (main_loop()->get_context());
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}
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void
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GenericMidiControlProtocol::stop_midi_handling ()
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{
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midi_connections.drop_connections ();
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/* Note: the input handler is still active at this point, but we're no
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* longer connected to any of the parser signals
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*/
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}
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bool
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GenericMidiControlProtocol::midi_input_handler (Glib::IOCondition ioc, boost::weak_ptr<ARDOUR::AsyncMIDIPort> wport)
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{
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boost::shared_ptr<AsyncMIDIPort> port (wport.lock());
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if (!port) {
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return false;
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}
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DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("something happend on %1\n", boost::shared_ptr<MIDI::Port>(port)->name()));
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if (ioc & ~IO_IN) {
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return false;
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}
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if (ioc & IO_IN) {
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port->clear ();
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DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("data available on %1\n", boost::shared_ptr<MIDI::Port>(port)->name()));
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samplepos_t now = session->engine().sample_time();
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port->parse (now);
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}
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return true;
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}
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@ -25,6 +25,9 @@
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#include <list>
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#include <glibmm/threads.h>
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#define ABSTRACT_UI_EXPORTS
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#include "pbd/abstract_ui.h"
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#include "ardour/types.h"
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#include "ardour/port.h"
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@ -48,11 +51,23 @@ class MIDIControllable;
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class MIDIFunction;
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class MIDIAction;
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class GenericMidiControlProtocol : public ARDOUR::ControlProtocol {
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struct GenericMIDIRequest : public BaseUI::BaseRequestObject {
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public:
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GenericMIDIRequest () {}
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~GenericMIDIRequest () {}
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};
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class GenericMidiControlProtocol : public ARDOUR::ControlProtocol, public AbstractUI<GenericMIDIRequest> {
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public:
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GenericMidiControlProtocol (ARDOUR::Session&);
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virtual ~GenericMidiControlProtocol();
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void do_request (GenericMIDIRequest*);
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int stop ();
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void thread_init ();
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int set_active (bool yn);
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static bool probe() { return true; }
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@ -169,7 +184,6 @@ private:
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int connection_state;
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bool connection_handler (boost::weak_ptr<ARDOUR::Port>, std::string name1, boost::weak_ptr<ARDOUR::Port>, std::string name2, bool yn);
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PBD::ScopedConnection port_connection;
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void connected();
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std::string _current_binding;
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uint32_t _bank_size;
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@ -185,7 +199,11 @@ private:
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mutable void *gui;
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void build_gui ();
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PBD::ScopedConnectionList midi_connections;
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bool midi_input_handler (Glib::IOCondition ioc, boost::weak_ptr<ARDOUR::AsyncMIDIPort> port);
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void start_midi_handling ();
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void stop_midi_handling ();
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};
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#endif /* ardour_generic_midi_control_protocol_h */
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