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livetrax/libs/surfaces/generic_midi/generic_midi_control_protocol.cc

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/*
Copyright (C) 2006 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 <stdint.h>
#include <sstream>
#include <algorithm>
#include <glibmm/fileutils.h>
#include <glibmm/miscutils.h>
#include "pbd/error.h"
#include "pbd/failed_constructor.h"
#include "pbd/file_utils.h"
#include "pbd/xml++.h"
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#include "pbd/compose.h"
#include "midi++/port.h"
#include "ardour/async_midi_port.h"
#include "ardour/audioengine.h"
#include "ardour/audioengine.h"
#include "ardour/controllable_descriptor.h"
#include "ardour/filesystem_paths.h"
#include "ardour/session.h"
#include "ardour/midi_ui.h"
#include "ardour/rc_configuration.h"
#include "ardour/midiport_manager.h"
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#include "ardour/debug.h"
#include "generic_midi_control_protocol.h"
#include "midicontrollable.h"
#include "midifunction.h"
#include "midiaction.h"
using namespace ARDOUR;
using namespace PBD;
using namespace std;
#include "pbd/i18n.h"
#define midi_ui_context() MidiControlUI::instance() /* a UICallback-derived object that specifies the event loop for signal handling */
GenericMidiControlProtocol::GenericMidiControlProtocol (Session& s)
: ControlProtocol (s, _("Generic MIDI"))
, connection_state (ConnectionState (0))
, _motorised (false)
, _threshold (10)
, gui (0)
{
_input_port = boost::dynamic_pointer_cast<AsyncMIDIPort> (s.midi_input_port ());
_output_port = boost::dynamic_pointer_cast<AsyncMIDIPort> (s.midi_output_port ());
_input_bundle.reset (new ARDOUR::Bundle (_("Generic MIDI Control In"), true));
_output_bundle.reset (new ARDOUR::Bundle (_("Generic MIDI Control Out"), false));
_input_bundle->add_channel (
boost::static_pointer_cast<MidiPort>(_input_port)->name(),
ARDOUR::DataType::MIDI,
session->engine().make_port_name_non_relative (boost::static_pointer_cast<MidiPort>(_input_port)->name())
);
_output_bundle->add_channel (
boost::static_pointer_cast<MidiPort>(_output_port)->name(),
ARDOUR::DataType::MIDI,
session->engine().make_port_name_non_relative (boost::static_pointer_cast<MidiPort>(_output_port)->name())
);
session->BundleAddedOrRemoved ();
do_feedback = false;
_feedback_interval = 10000; // microseconds
last_feedback_time = 0;
_current_bank = 0;
_bank_size = 0;
/* these signals are emitted by the MidiControlUI's event loop thread
* and we may as well handle them right there in the same the same
* thread
*/
Controllable::StartLearning.connect_same_thread (*this, boost::bind (&GenericMidiControlProtocol::start_learning, this, _1));
Controllable::StopLearning.connect_same_thread (*this, boost::bind (&GenericMidiControlProtocol::stop_learning, this, _1));
Controllable::CreateBinding.connect_same_thread (*this, boost::bind (&GenericMidiControlProtocol::create_binding, this, _1, _2, _3));
Controllable::DeleteBinding.connect_same_thread (*this, boost::bind (&GenericMidiControlProtocol::delete_binding, this, _1));
/* this signal is emitted by the process() callback, and if
* send_feedback() is going to do anything, it should do it in the
* context of the process() callback itself.
*/
Session::SendFeedback.connect_same_thread (*this, boost::bind (&GenericMidiControlProtocol::send_feedback, this));
//Session::SendFeedback.connect (*this, MISSING_INVALIDATOR, boost::bind (&GenericMidiControlProtocol::send_feedback, this), midi_ui_context());;
/* this one is cross-thread */
PresentationInfo::Change.connect (*this, MISSING_INVALIDATOR, boost::bind (&GenericMidiControlProtocol::reset_controllables, this), midi_ui_context());
/* Catch port connections and disconnections (cross-thread) */
ARDOUR::AudioEngine::instance()->PortConnectedOrDisconnected.connect (port_connection, MISSING_INVALIDATOR,
boost::bind (&GenericMidiControlProtocol::connection_handler, this, _1, _2, _3, _4, _5),
midi_ui_context());
reload_maps ();
}
GenericMidiControlProtocol::~GenericMidiControlProtocol ()
{
drop_all ();
tear_down_gui ();
}
list<boost::shared_ptr<ARDOUR::Bundle> >
GenericMidiControlProtocol::bundles ()
{
list<boost::shared_ptr<ARDOUR::Bundle> > b;
if (_input_bundle) {
b.push_back (_input_bundle);
b.push_back (_output_bundle);
}
return b;
}
static const char * const midimap_env_variable_name = "ARDOUR_MIDIMAPS_PATH";
static const char* const midi_map_dir_name = "midi_maps";
static const char* const midi_map_suffix = ".map";
Searchpath
system_midi_map_search_path ()
{
bool midimap_path_defined = false;
std::string spath_env (Glib::getenv (midimap_env_variable_name, midimap_path_defined));
if (midimap_path_defined) {
return spath_env;
}
Searchpath spath (ardour_data_search_path());
spath.add_subdirectory_to_paths(midi_map_dir_name);
return spath;
}
static std::string
user_midi_map_directory ()
{
return Glib::build_filename (user_config_directory(), midi_map_dir_name);
}
static bool
midi_map_filter (const string &str, void* /*arg*/)
{
return (str.length() > strlen(midi_map_suffix) &&
str.find (midi_map_suffix) == (str.length() - strlen (midi_map_suffix)));
}
void
GenericMidiControlProtocol::reload_maps ()
{
vector<string> midi_maps;
Searchpath spath (system_midi_map_search_path());
spath += user_midi_map_directory ();
find_files_matching_filter (midi_maps, spath, midi_map_filter, 0, false, true);
if (midi_maps.empty()) {
cerr << "No MIDI maps found using " << spath.to_string() << endl;
return;
}
for (vector<string>::iterator i = midi_maps.begin(); i != midi_maps.end(); ++i) {
string fullpath = *i;
XMLTree tree;
if (!tree.read (fullpath.c_str())) {
continue;
}
MapInfo mi;
XMLProperty const * prop = tree.root()->property ("name");
if (!prop) {
continue;
}
mi.name = prop->value ();
mi.path = fullpath;
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map_info.push_back (mi);
}
}
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void
GenericMidiControlProtocol::drop_all ()
{
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DEBUG_TRACE (DEBUG::GenericMidi, "Drop all bindings\n");
Glib::Threads::Mutex::Lock lm (pending_lock);
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
for (MIDIControllables::iterator i = controllables.begin(); i != controllables.end(); ++i) {
delete *i;
}
controllables.clear ();
for (MIDIPendingControllables::iterator i = pending_controllables.begin(); i != pending_controllables.end(); ++i) {
delete *i;
}
pending_controllables.clear ();
for (MIDIFunctions::iterator i = functions.begin(); i != functions.end(); ++i) {
delete *i;
}
functions.clear ();
for (MIDIActions::iterator i = actions.begin(); i != actions.end(); ++i) {
delete *i;
}
actions.clear ();
}
void
GenericMidiControlProtocol::drop_bindings ()
{
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DEBUG_TRACE (DEBUG::GenericMidi, "Drop bindings, leave learned\n");
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
for (MIDIControllables::iterator i = controllables.begin(); i != controllables.end(); ) {
if (!(*i)->learned()) {
delete *i;
i = controllables.erase (i);
} else {
++i;
}
}
for (MIDIFunctions::iterator i = functions.begin(); i != functions.end(); ++i) {
delete *i;
}
functions.clear ();
_current_binding = "";
_bank_size = 0;
_current_bank = 0;
}
int
GenericMidiControlProtocol::set_active (bool /*yn*/)
{
/* nothing to do here: the MIDI UI thread in libardour handles all our
I/O needs.
*/
return 0;
}
void
GenericMidiControlProtocol::set_feedback_interval (microseconds_t ms)
{
_feedback_interval = ms;
}
void
GenericMidiControlProtocol::send_feedback ()
{
/* This is executed in RT "process" context", so no blocking calls
*/
if (!do_feedback) {
return;
}
microseconds_t now = get_microseconds ();
if (last_feedback_time != 0) {
if ((now - last_feedback_time) < _feedback_interval) {
return;
}
}
_send_feedback ();
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last_feedback_time = now;
}
void
GenericMidiControlProtocol::_send_feedback ()
{
/* This is executed in RT "process" context", so no blocking calls
*/
const int32_t bufsize = 16 * 1024; /* XXX too big */
MIDI::byte buf[bufsize];
int32_t bsize = bufsize;
/* XXX: due to bugs in some ALSA / JACK MIDI bridges, we have to do separate
writes for each controllable here; if we send more than one MIDI message
in a single jack_midi_event_write then some bridges will only pass the
first on to ALSA.
*/
Glib::Threads::Mutex::Lock lm (controllables_lock, Glib::Threads::TRY_LOCK);
if (!lm.locked ()) {
return;
}
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for (MIDIControllables::iterator r = controllables.begin(); r != controllables.end(); ++r) {
MIDI::byte* end = (*r)->write_feedback (buf, bsize);
if (end != buf) {
_output_port->write (buf, (int32_t) (end - buf), 0);
}
}
}
bool
GenericMidiControlProtocol::start_learning (Controllable* c)
{
if (c == 0) {
return false;
}
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("Learn binding: Controlable number: %1\n", c));
MIDIControllables::iterator tmp;
for (MIDIControllables::iterator i = controllables.begin(); i != controllables.end(); ) {
tmp = i;
++tmp;
if ((*i)->get_controllable() == c) {
delete (*i);
controllables.erase (i);
}
i = tmp;
}
{
Glib::Threads::Mutex::Lock lm (pending_lock);
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MIDIPendingControllables::iterator ptmp;
for (MIDIPendingControllables::iterator i = pending_controllables.begin(); i != pending_controllables.end(); ) {
ptmp = i;
++ptmp;
if (((*i)->mc)->get_controllable() == c) {
if ((*i)->own_mc) {
delete (*i)->mc;
}
(*i)->connection.disconnect();
delete *i;
pending_controllables.erase (i);
}
i = ptmp;
}
}
MIDIControllable* mc = 0;
bool own_mc = false;
for (MIDIControllables::iterator i = controllables.begin(); i != controllables.end(); ++i) {
if ((*i)->get_controllable() && ((*i)->get_controllable()->id() == c->id())) {
mc = *i;
break;
}
}
if (!mc) {
mc = new MIDIControllable (this, *_input_port->parser(), *c, false);
own_mc = true;
}
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{
Glib::Threads::Mutex::Lock lm (pending_lock);
MIDIPendingControllable* element = new MIDIPendingControllable (mc, own_mc);
c->LearningFinished.connect_same_thread (element->connection, boost::bind (&GenericMidiControlProtocol::learning_stopped, this, mc));
pending_controllables.push_back (element);
}
mc->learn_about_external_control ();
return true;
}
void
GenericMidiControlProtocol::learning_stopped (MIDIControllable* mc)
{
Glib::Threads::Mutex::Lock lm (pending_lock);
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
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MIDIPendingControllables::iterator tmp;
for (MIDIPendingControllables::iterator i = pending_controllables.begin(); i != pending_controllables.end(); ) {
tmp = i;
++tmp;
if ( (*i)->mc == mc) {
(*i)->connection.disconnect();
delete *i;
pending_controllables.erase(i);
}
i = tmp;
}
controllables.push_back (mc);
}
void
GenericMidiControlProtocol::stop_learning (Controllable* c)
{
Glib::Threads::Mutex::Lock lm (pending_lock);
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
MIDIControllable* dptr = 0;
/* learning timed out, and we've been told to consider this attempt to learn to be cancelled. find the
relevant MIDIControllable and remove it from the pending list.
*/
for (MIDIPendingControllables::iterator i = pending_controllables.begin(); i != pending_controllables.end(); ++i) {
if (((*i)->mc)->get_controllable() == c) {
(*i)->mc->stop_learning ();
dptr = (*i)->mc;
(*i)->connection.disconnect();
delete *i;
pending_controllables.erase (i);
break;
}
}
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delete dptr;
}
void
GenericMidiControlProtocol::delete_binding (PBD::Controllable* control)
{
if (control != 0) {
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
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for (MIDIControllables::iterator iter = controllables.begin(); iter != controllables.end();) {
MIDIControllable* existingBinding = (*iter);
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if (control == (existingBinding->get_controllable())) {
delete existingBinding;
iter = controllables.erase (iter);
} else {
++iter;
}
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}
}
}
// This next function seems unused
void
GenericMidiControlProtocol::create_binding (PBD::Controllable* control, int pos, int control_number)
{
if (control != NULL) {
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
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MIDI::channel_t channel = (pos & 0xf);
MIDI::byte value = control_number;
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// Create a MIDIControllable
MIDIControllable* mc = new MIDIControllable (this, *_input_port->parser(), *control, false);
// Remove any old binding for this midi channel/type/value pair
// Note: can't use delete_binding() here because we don't know the specific controllable we want to remove, only the midi information
for (MIDIControllables::iterator iter = controllables.begin(); iter != controllables.end();) {
MIDIControllable* existingBinding = (*iter);
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if ((existingBinding->get_control_channel() & 0xf ) == channel &&
existingBinding->get_control_additional() == value &&
(existingBinding->get_control_type() & 0xf0 ) == MIDI::controller) {
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delete existingBinding;
iter = controllables.erase (iter);
} else {
++iter;
}
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}
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// Update the MIDI Controllable based on the the pos param
// Here is where a table lookup for user mappings could go; for now we'll just wing it...
mc->bind_midi(channel, MIDI::controller, value);
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DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("Create binding: Channel: %1 Controller: %2 Value: %3 \n", channel, MIDI::controller, value));
controllables.push_back (mc);
}
}
void
GenericMidiControlProtocol::check_used_event (int pos, int control_number)
{
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
MIDI::channel_t channel = (pos & 0xf);
MIDI::byte value = control_number;
DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("checking for used event: Channel: %1 Controller: %2 value: %3\n", (int) channel, (pos & 0xf0), (int) value));
// Remove any old binding for this midi channel/type/value pair
// Note: can't use delete_binding() here because we don't know the specific controllable we want to remove, only the midi information
for (MIDIControllables::iterator iter = controllables.begin(); iter != controllables.end();) {
MIDIControllable* existingBinding = (*iter);
if ( (existingBinding->get_control_type() & 0xf0 ) == (pos & 0xf0) && (existingBinding->get_control_channel() & 0xf ) == channel ) {
if ( ((int) existingBinding->get_control_additional() == (int) value) || ((pos & 0xf0) == MIDI::pitchbend)) {
DEBUG_TRACE (DEBUG::GenericMidi, "checking: found match, delete old binding.\n");
delete existingBinding;
iter = controllables.erase (iter);
} else {
++iter;
}
} else {
++iter;
}
}
for (MIDIFunctions::iterator iter = functions.begin(); iter != functions.end();) {
MIDIFunction* existingBinding = (*iter);
if ( (existingBinding->get_control_type() & 0xf0 ) == (pos & 0xf0) && (existingBinding->get_control_channel() & 0xf ) == channel ) {
if ( ((int) existingBinding->get_control_additional() == (int) value) || ((pos & 0xf0) == MIDI::pitchbend)) {
DEBUG_TRACE (DEBUG::GenericMidi, "checking: found match, delete old binding.\n");
delete existingBinding;
iter = functions.erase (iter);
} else {
++iter;
}
} else {
++iter;
}
}
for (MIDIActions::iterator iter = actions.begin(); iter != actions.end();) {
MIDIAction* existingBinding = (*iter);
if ( (existingBinding->get_control_type() & 0xf0 ) == (pos & 0xf0) && (existingBinding->get_control_channel() & 0xf ) == channel ) {
if ( ((int) existingBinding->get_control_additional() == (int) value) || ((pos & 0xf0) == MIDI::pitchbend)) {
DEBUG_TRACE (DEBUG::GenericMidi, "checking: found match, delete old binding.\n");
delete existingBinding;
iter = actions.erase (iter);
} else {
++iter;
}
} else {
++iter;
}
}
}
XMLNode&
GenericMidiControlProtocol::get_state ()
{
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XMLNode& node (ControlProtocol::get_state());
char buf[32];
snprintf (buf, sizeof (buf), "%" PRIu64, _feedback_interval);
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node.add_property (X_("feedback_interval"), buf);
snprintf (buf, sizeof (buf), "%d", _threshold);
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node.add_property (X_("threshold"), buf);
node.add_property (X_("motorized"), _motorised ? "yes" : "no");
if (!_current_binding.empty()) {
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node.add_property ("binding", _current_binding);
}
XMLNode* children = new XMLNode (X_("Controls"));
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node.add_child_nocopy (*children);
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
for (MIDIControllables::iterator i = controllables.begin(); i != controllables.end(); ++i) {
/* we don't care about bindings that come from a bindings map, because
they will all be reset/recreated when we load the relevant bindings
file.
*/
if ((*i)->get_controllable() && (*i)->learned()) {
children->add_child_nocopy ((*i)->get_state());
}
}
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return node;
}
int
GenericMidiControlProtocol::set_state (const XMLNode& node, int version)
{
XMLNodeList nlist;
XMLNodeConstIterator niter;
const XMLProperty* prop;
if (ControlProtocol::set_state (node, version)) {
return -1;
}
if ((prop = node.property ("feedback_interval")) != 0) {
if (sscanf (prop->value().c_str(), "%" PRIu64, &_feedback_interval) != 1) {
_feedback_interval = 10000;
}
} else {
_feedback_interval = 10000;
}
if ((prop = node.property ("threshold")) != 0) {
if (sscanf (prop->value().c_str(), "%d", &_threshold) != 1) {
_threshold = 10;
}
} else {
_threshold = 10;
}
if ((prop = node.property ("motorized")) != 0) {
_motorised = string_is_affirmative (prop->value ());
} else {
_motorised = false;
}
boost::shared_ptr<Controllable> c;
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{
Glib::Threads::Mutex::Lock lm (pending_lock);
for (MIDIPendingControllables::iterator i = pending_controllables.begin(); i != pending_controllables.end(); ++i) {
delete *i;
}
pending_controllables.clear ();
}
// midi map has to be loaded first so learned binding can go on top
if ((prop = node.property ("binding")) != 0) {
for (list<MapInfo>::iterator x = map_info.begin(); x != map_info.end(); ++x) {
if (prop->value() == (*x).name) {
load_bindings ((*x).path);
break;
}
}
}
/* Load up specific bindings from the
* <Controls><MidiControllable>...</MidiControllable><Controls> section
*/
{
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
nlist = node.children(); // "Controls"
if (!nlist.empty()) {
nlist = nlist.front()->children(); // "MIDIControllable" ...
if (!nlist.empty()) {
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
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if ((prop = (*niter)->property ("id")) != 0) {
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ID id = prop->value ();
DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("Relearned binding for session: Control ID: %1\n", id.to_s()));
Controllable* c = Controllable::by_id (id);
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if (c) {
MIDIControllable* mc = new MIDIControllable (this, *_input_port->parser(), *c, false);
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if (mc->set_state (**niter, version) == 0) {
controllables.push_back (mc);
}
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} else {
warning << string_compose (
_("Generic MIDI control: controllable %1 not found in session (ignored)"),
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id.to_s()) << endmsg;
}
}
}
}
}
}
return 0;
}
int
GenericMidiControlProtocol::set_feedback (bool yn)
{
do_feedback = yn;
last_feedback_time = 0;
return 0;
}
bool
GenericMidiControlProtocol::get_feedback () const
{
return do_feedback;
}
int
GenericMidiControlProtocol::load_bindings (const string& xmlpath)
{
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DEBUG_TRACE (DEBUG::GenericMidi, "Load bindings: Reading midi map\n");
XMLTree state_tree;
if (!state_tree.read (xmlpath.c_str())) {
error << string_compose(_("Could not understand MIDI bindings file %1"), xmlpath) << endmsg;
return -1;
}
XMLNode* root = state_tree.root();
if (root->name() != X_("ArdourMIDIBindings")) {
error << string_compose (_("MIDI Bindings file %1 is not really a MIDI bindings file"), xmlpath) << endmsg;
return -1;
}
const XMLProperty* prop;
if ((prop = root->property ("version")) == 0) {
return -1;
} else {
int major;
int minor;
int micro;
sscanf (prop->value().c_str(), "%d.%d.%d", &major, &minor, &micro);
Stateful::loading_state_version = (major * 1000) + minor;
}
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const XMLNodeList& children (root->children());
XMLNodeConstIterator citer;
XMLNodeConstIterator gciter;
MIDIControllable* mc;
drop_all ();
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DEBUG_TRACE (DEBUG::GenericMidi, "Loading bindings\n");
for (citer = children.begin(); citer != children.end(); ++citer) {
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if ((*citer)->name() == "DeviceInfo") {
const XMLProperty* prop;
if ((prop = (*citer)->property ("bank-size")) != 0) {
_bank_size = atoi (prop->value());
_current_bank = 0;
}
if ((prop = (*citer)->property ("motorized")) != 0) {
_motorised = string_is_affirmative (prop->value ());
} else {
_motorised = false;
}
if ((prop = (*citer)->property ("threshold")) != 0) {
_threshold = atoi (prop->value ());
} else {
_threshold = 10;
}
}
if ((*citer)->name() == "Binding") {
const XMLNode* child = *citer;
if (child->property ("uri")) {
/* controllable */
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if ((mc = create_binding (*child)) != 0) {
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
controllables.push_back (mc);
}
} else if (child->property ("function")) {
/* function */
MIDIFunction* mf;
if ((mf = create_function (*child)) != 0) {
functions.push_back (mf);
}
} else if (child->property ("action")) {
MIDIAction* ma;
if ((ma = create_action (*child)) != 0) {
actions.push_back (ma);
}
}
}
}
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if ((prop = root->property ("name")) != 0) {
_current_binding = prop->value ();
}
reset_controllables ();
return 0;
}
MIDIControllable*
GenericMidiControlProtocol::create_binding (const XMLNode& node)
{
const XMLProperty* prop;
MIDI::byte detail;
MIDI::channel_t channel;
string uri;
MIDI::eventType ev;
int intval;
bool momentary;
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MIDIControllable::Encoder encoder = MIDIControllable::No_enc;
bool rpn_value = false;
bool nrpn_value = false;
bool rpn_change = false;
bool nrpn_change = false;
if ((prop = node.property (X_("ctl"))) != 0) {
ev = MIDI::controller;
} else if ((prop = node.property (X_("note"))) != 0) {
ev = MIDI::on;
} else if ((prop = node.property (X_("pgm"))) != 0) {
ev = MIDI::program;
} else if ((prop = node.property (X_("pb"))) != 0) {
ev = MIDI::pitchbend;
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} else if ((prop = node.property (X_("enc-l"))) != 0) {
encoder = MIDIControllable::Enc_L;
ev = MIDI::controller;
} else if ((prop = node.property (X_("enc-r"))) != 0) {
encoder = MIDIControllable::Enc_R;
ev = MIDI::controller;
} else if ((prop = node.property (X_("enc-2"))) != 0) {
encoder = MIDIControllable::Enc_2;
ev = MIDI::controller;
} else if ((prop = node.property (X_("enc-b"))) != 0) {
encoder = MIDIControllable::Enc_B;
ev = MIDI::controller;
} else if ((prop = node.property (X_("rpn"))) != 0) {
rpn_value = true;
} else if ((prop = node.property (X_("nrpn"))) != 0) {
nrpn_value = true;
} else if ((prop = node.property (X_("rpn-delta"))) != 0) {
rpn_change = true;
} else if ((prop = node.property (X_("nrpn-delta"))) != 0) {
nrpn_change = true;
} else {
return 0;
}
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if (sscanf (prop->value().c_str(), "%d", &intval) != 1) {
return 0;
}
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detail = (MIDI::byte) intval;
if ((prop = node.property (X_("channel"))) == 0) {
return 0;
}
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if (sscanf (prop->value().c_str(), "%d", &intval) != 1) {
return 0;
}
channel = (MIDI::channel_t) intval;
/* adjust channel to zero-based counting */
if (channel > 0) {
channel -= 1;
}
if ((prop = node.property (X_("momentary"))) != 0) {
momentary = string_is_affirmative (prop->value());
} else {
momentary = false;
}
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prop = node.property (X_("uri"));
uri = prop->value();
MIDIControllable* mc = new MIDIControllable (this, *_input_port->parser(), momentary);
if (mc->init (uri)) {
delete mc;
return 0;
}
if (rpn_value) {
mc->bind_rpn_value (channel, detail);
} else if (nrpn_value) {
mc->bind_nrpn_value (channel, detail);
} else if (rpn_change) {
mc->bind_rpn_change (channel, detail);
} else if (nrpn_change) {
mc->bind_nrpn_change (channel, detail);
} else {
mc->set_encoder (encoder);
mc->bind_midi (channel, ev, detail);
}
return mc;
}
void
GenericMidiControlProtocol::reset_controllables ()
{
Glib::Threads::Mutex::Lock lm2 (controllables_lock);
for (MIDIControllables::iterator iter = controllables.begin(); iter != controllables.end(); ) {
MIDIControllable* existingBinding = (*iter);
MIDIControllables::iterator next = iter;
++next;
if (!existingBinding->learned()) {
ControllableDescriptor& desc (existingBinding->descriptor());
if (desc.banked()) {
desc.set_bank_offset (_current_bank * _bank_size);
}
/* its entirely possible that the session doesn't have
* the specified controllable (e.g. it has too few
* tracks). if we find this to be the case, we just leave
* the binding around, unbound, and it will do "late
* binding" (or "lazy binding") if/when any data arrives.
*/
existingBinding->lookup_controllable ();
}
iter = next;
}
}
boost::shared_ptr<Controllable>
GenericMidiControlProtocol::lookup_controllable (const ControllableDescriptor& desc) const
{
return session->controllable_by_descriptor (desc);
}
MIDIFunction*
GenericMidiControlProtocol::create_function (const XMLNode& node)
{
const XMLProperty* prop;
int intval;
MIDI::byte detail = 0;
MIDI::channel_t channel = 0;
string uri;
MIDI::eventType ev;
MIDI::byte* data = 0;
uint32_t data_size = 0;
string argument;
if ((prop = node.property (X_("ctl"))) != 0) {
ev = MIDI::controller;
} else if ((prop = node.property (X_("note"))) != 0) {
ev = MIDI::on;
} else if ((prop = node.property (X_("pgm"))) != 0) {
ev = MIDI::program;
} else if ((prop = node.property (X_("sysex"))) != 0 || (prop = node.property (X_("msg"))) != 0) {
if (prop->name() == X_("sysex")) {
ev = MIDI::sysex;
} else {
ev = MIDI::any;
}
int val;
uint32_t cnt;
{
cnt = 0;
stringstream ss (prop->value());
ss << hex;
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while (ss >> val) {
cnt++;
}
}
if (cnt == 0) {
return 0;
}
data = new MIDI::byte[cnt];
data_size = cnt;
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{
stringstream ss (prop->value());
ss << hex;
cnt = 0;
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while (ss >> val) {
data[cnt++] = (MIDI::byte) val;
}
}
} else {
warning << "Binding ignored - unknown type" << endmsg;
return 0;
}
if (data_size == 0) {
if (sscanf (prop->value().c_str(), "%d", &intval) != 1) {
return 0;
}
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detail = (MIDI::byte) intval;
if ((prop = node.property (X_("channel"))) == 0) {
return 0;
}
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if (sscanf (prop->value().c_str(), "%d", &intval) != 1) {
return 0;
}
channel = (MIDI::channel_t) intval;
/* adjust channel to zero-based counting */
if (channel > 0) {
channel -= 1;
}
}
if ((prop = node.property (X_("arg"))) != 0 || (prop = node.property (X_("argument"))) != 0 || (prop = node.property (X_("arguments"))) != 0) {
argument = prop->value ();
}
prop = node.property (X_("function"));
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MIDIFunction* mf = new MIDIFunction (*_input_port->parser());
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if (mf->setup (*this, prop->value(), argument, data, data_size)) {
delete mf;
return 0;
}
mf->bind_midi (channel, ev, detail);
return mf;
}
MIDIAction*
GenericMidiControlProtocol::create_action (const XMLNode& node)
{
const XMLProperty* prop;
int intval;
MIDI::byte detail = 0;
MIDI::channel_t channel = 0;
string uri;
MIDI::eventType ev;
MIDI::byte* data = 0;
uint32_t data_size = 0;
if ((prop = node.property (X_("ctl"))) != 0) {
ev = MIDI::controller;
} else if ((prop = node.property (X_("note"))) != 0) {
ev = MIDI::on;
} else if ((prop = node.property (X_("pgm"))) != 0) {
ev = MIDI::program;
} else if ((prop = node.property (X_("sysex"))) != 0 || (prop = node.property (X_("msg"))) != 0) {
if (prop->name() == X_("sysex")) {
ev = MIDI::sysex;
} else {
ev = MIDI::any;
}
int val;
uint32_t cnt;
{
cnt = 0;
stringstream ss (prop->value());
ss << hex;
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while (ss >> val) {
cnt++;
}
}
if (cnt == 0) {
return 0;
}
data = new MIDI::byte[cnt];
data_size = cnt;
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{
stringstream ss (prop->value());
ss << hex;
cnt = 0;
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while (ss >> val) {
data[cnt++] = (MIDI::byte) val;
}
}
} else {
warning << "Binding ignored - unknown type" << endmsg;
return 0;
}
if (data_size == 0) {
if (sscanf (prop->value().c_str(), "%d", &intval) != 1) {
return 0;
}
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detail = (MIDI::byte) intval;
if ((prop = node.property (X_("channel"))) == 0) {
return 0;
}
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if (sscanf (prop->value().c_str(), "%d", &intval) != 1) {
return 0;
}
channel = (MIDI::channel_t) intval;
/* adjust channel to zero-based counting */
if (channel > 0) {
channel -= 1;
}
}
prop = node.property (X_("action"));
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MIDIAction* ma = new MIDIAction (*_input_port->parser());
if (ma->init (*this, prop->value(), data, data_size)) {
delete ma;
return 0;
}
ma->bind_midi (channel, ev, detail);
return ma;
}
void
GenericMidiControlProtocol::set_current_bank (uint32_t b)
{
_current_bank = b;
reset_controllables ();
}
void
GenericMidiControlProtocol::next_bank ()
{
_current_bank++;
reset_controllables ();
}
void
GenericMidiControlProtocol::prev_bank()
{
if (_current_bank) {
_current_bank--;
reset_controllables ();
}
}
void
GenericMidiControlProtocol::set_motorised (bool m)
{
_motorised = m;
}
void
GenericMidiControlProtocol::set_threshold (int t)
{
_threshold = t;
}
bool
GenericMidiControlProtocol::connection_handler (boost::weak_ptr<ARDOUR::Port>, std::string name1, boost::weak_ptr<ARDOUR::Port>, std::string name2, bool yn)
{
if (!_input_port || !_output_port) {
return false;
}
string ni = ARDOUR::AudioEngine::instance()->make_port_name_non_relative (boost::shared_ptr<ARDOUR::Port>(_input_port)->name());
string no = ARDOUR::AudioEngine::instance()->make_port_name_non_relative (boost::shared_ptr<ARDOUR::Port>(_output_port)->name());
if (ni == name1 || ni == name2) {
if (yn) {
connection_state |= InputConnected;
} else {
connection_state &= ~InputConnected;
}
} else if (no == name1 || no == name2) {
if (yn) {
connection_state |= OutputConnected;
} else {
connection_state &= ~OutputConnected;
}
} else {
/* not our ports */
return false;
}
if ((connection_state & (InputConnected|OutputConnected)) == (InputConnected|OutputConnected)) {
/* XXX this is a horrible hack. Without a short sleep here,
something prevents the device wakeup messages from being
sent and/or the responses from being received.
*/
g_usleep (100000);
connected ();
} else {
}
ConnectionChange (); /* emit signal for our GUI */
return true; /* connection status changed */
}
void
GenericMidiControlProtocol::connected ()
{
cerr << "Now connected\n";
}
boost::shared_ptr<Port>
GenericMidiControlProtocol::output_port() const
{
return _output_port;
}
boost::shared_ptr<Port>
GenericMidiControlProtocol::input_port() const
{
return _input_port;
}