/* This file is part of Ingen. * Copyright 2007-2011 David Robillard * * Ingen 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. * * Ingen 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 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., * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ //#define ENABLE_AVAHI 1 #include #include #include #include #include "raul/AtomLiblo.hpp" #include "raul/Path.hpp" #include "raul/SharedPtr.hpp" #include "raul/log.hpp" #include "ingen-config.h" #include "ingen/ClientInterface.hpp" #include "ClientBroadcaster.hpp" #include "Engine.hpp" #include "EventSource.hpp" #include "OSCClientSender.hpp" #include "OSCEngineReceiver.hpp" #include "ThreadManager.hpp" #define LOG(s) s << "[OSCEngineReceiver] " using namespace std; using namespace Raul; namespace Ingen { namespace Server { /** @page engine_osc_namespace Server OSC Namespace Documentation * *

These are the commands the engine recognizes. A client can control every * aspect of the engine entirely with these commands.

* *

All commands on this page are in the "control band". If a client needs to * know about the state of the engine, it must listen to the "notification band". * See the "Client OSC Namespace Documentation" for details.

*/ OSCEngineReceiver::OSCEngineReceiver(Engine& engine, uint16_t port) : QueuedEngineInterface(engine) , _server(NULL) { _receive_thread = new ReceiveThread(*this); char port_str[6]; snprintf(port_str, sizeof(port_str), "%u", port); _server = lo_server_new(port_str, error_cb); #ifdef ENABLE_AVAHI lo_server_avahi_init(_server, "ingen"); #endif if (_server == NULL) { LOG(error) << "Could not start OSC server. Aborting." << endl; exit(EXIT_FAILURE); } else { char* lo_url = lo_server_get_url(_server); LOG(info) << "Started OSC server at " << lo_url << endl; free(lo_url); } #ifdef RAUL_LOG_DEBUG lo_server_add_method(_server, NULL, NULL, generic_cb, NULL); #endif // Set response address for this message. // It's important this is first and returns nonzero. lo_server_add_method(_server, NULL, NULL, set_response_address_cb, this); #ifdef LIBLO_BUNDLES lo_server_add_bundle_handlers(_server, bundle_start_cb, bundle_end_cb, this); #endif // Commands lo_server_add_method(_server, "/ping", "i", ping_cb, this); lo_server_add_method(_server, "/ping_queued", "i", ping_slow_cb, this); lo_server_add_method(_server, "/register_client", "i", register_client_cb, this); lo_server_add_method(_server, "/unregister_client", "i", unregister_client_cb, this); lo_server_add_method(_server, "/put", NULL, put_cb, this); lo_server_add_method(_server, "/move", "iss", move_cb, this); lo_server_add_method(_server, "/delete", "is", del_cb, this); lo_server_add_method(_server, "/connect", "iss", connect_cb, this); lo_server_add_method(_server, "/disconnect", "iss", disconnect_cb, this); lo_server_add_method(_server, "/disconnect_all", "iss", disconnect_all_cb, this); lo_server_add_method(_server, "/note_on", "isii", note_on_cb, this); lo_server_add_method(_server, "/note_off", "isi", note_off_cb, this); lo_server_add_method(_server, "/all_notes_off", "isi", all_notes_off_cb, this); lo_server_add_method(_server, "/learn", "is", learn_cb, this); lo_server_add_method(_server, "/set_property", NULL, set_property_cb, this); // Queries lo_server_add_method(_server, "/request_property", "iss", request_property_cb, this); lo_server_add_method(_server, "/get", "is", get_cb, this); lo_server_add_method(_server, NULL, NULL, unknown_cb, NULL); Thread::set_name("OSCEngineReceiver"); start(); _receive_thread->set_name("OSCEngineReceiver Listener"); _receive_thread->start(); _receive_thread->set_scheduling(SCHED_FIFO, 5); } OSCEngineReceiver::~OSCEngineReceiver() { _receive_thread->stop(); stop(); delete _receive_thread; if (_server != NULL) { #ifdef ENABLE_AVAHI lo_server_avahi_free(_server); #endif lo_server_free(_server); _server = NULL; } } /** Override the semaphore driven _run method of QueuedEngineInterface * to wait on OSC messages and prepare them right away in the same thread. */ void OSCEngineReceiver::ReceiveThread::_run() { Thread::get().set_context(THREAD_PRE_PROCESS); /* get a timestamp here and stamp all the events with the same time so * they all get executed in the same cycle */ while (true) { // Wait on a message and enqueue it lo_server_recv(_receiver._server); // Enqueue every other message that is here "now" // (would this provide truly atomic bundles?) while (lo_server_recv_noblock(_receiver._server, 0) > 0) if (_receiver.unprepared_events()) _receiver.whip(); // No more unprepared events } } /** Create a new request for this message, if necessary. * * This is based on the fact that the current request is stored in a ref * counted pointer, and events just take a reference to that. Thus, events * may delete their request if we've since switched to a new one, or the * same one can stay around and serve a series of events. * Hooray for reference counting. * * If this message came from the same source as the last message, no allocation * of requests or lo_addresses or any of it needs to be done. Unfortunately * the only way to check is by comparing URLs, because liblo addresses suck. * Lack of a fast liblo address comparison really sucks here, in any case. */ int OSCEngineReceiver::set_response_address_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg, void* user_data) { OSCEngineReceiver* const me = reinterpret_cast(user_data); if (argc < 1 || types[0] != 'i') // Not a valid Ingen message return 0; // Save liblo the trouble const int32_t id = argv[0]->i; const lo_address addr = lo_message_get_source(msg); char* const url = lo_address_get_url(addr); const SharedPtr r = me->_request; /* Different address than last time, have to do a lookup */ if (!r || !r->client() || strcmp(url, r->client()->uri().c_str())) { ClientInterface* client = me->_engine.broadcaster()->client(url); if (client) me->_request = SharedPtr(new Request(me, client, id)); else me->_request = SharedPtr(new Request(me)); } if (id != -1) { me->set_next_response_id(id); } else { me->disable_responses(); } free(url); // If this returns 0 no OSC commands will work return 1; } #ifdef LIBLO_BUNDLES int OSCEngineReceiver::_bundle_start_cb(lo_timetag time) { info << "BUNDLE START" << endl; return 0; } int OSCEngineReceiver::_bundle_end_cb() { info << "BUNDLE END" << endl; return 0; } #endif void OSCEngineReceiver::error_cb(int num, const char* msg, const char* path) { error << "liblo server error" << num; if (path) { error << " for path `" << path << "'"; } error << " (" << msg << ")" << endl; } /** @page engine_osc_namespace *

/ping

* @arg @p response-id :: Integer */ int OSCEngineReceiver::_ping_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { const lo_address addr = lo_message_get_source(msg); if (lo_send(addr, "/ok", "i", argv[0]->i) < 0) warn << "Unable to send response (" << lo_address_errstr(addr) << ")" << endl; return 0; } /** @page engine_osc_namespace *

/ping_queued

* @arg @p response-id :: Integer * * @par * Reply to sender with a successful response after going through the * event queue. This is useful for checking if the engine is actually active, * or for sending after several events as a sentinel and wait on it's response, * to know when all previous events have finished processing. */ int OSCEngineReceiver::_ping_slow_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { ping(); return 0; } /** @page engine_osc_namespace *

/register_client

* @arg @p response-id :: Integer * * @par * Register a new client with the engine. The incoming address will be * used for the new registered client. */ int OSCEngineReceiver::_register_client_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { lo_address addr = lo_message_get_source(msg); char* const url = lo_address_get_url(addr); ClientInterface* client = new OSCClientSender( (const char*)url, _engine.world()->conf()->option("packet-size").get_int32()); register_client(client); free(url); return 0; } /** @page engine_osc_namespace *

/unregister_client

* @arg @p response-id :: Integer * * @par * Unregister a client. */ int OSCEngineReceiver::_unregister_client_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { lo_address addr = lo_message_get_source(msg); char* url = lo_address_get_url(addr); unregister_client(url); free(url); return 0; } /** @page engine_osc_namespace *

/get

* @arg @p response-id :: Integer * @arg @p uri :: URI String * * @par * Request all properties of an object. */ int OSCEngineReceiver::_get_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { get(&argv[1]->s); return 0; } /** @page engine_osc_namespace *

/put

* @arg @p response-id :: Integer * @arg @p path :: String * @arg @p predicate :: URI String * @arg @p value * @arg @p ... * * @par * PUT a set of properties to a path. */ int OSCEngineReceiver::_put_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { const char* obj_path = &argv[1]->s; Resource::Properties prop; for (int i = 2; i < argc-1; i += 2) prop.insert(make_pair(&argv[i]->s, AtomLiblo::lo_arg_to_atom(types[i+1], argv[i+1]))); put(obj_path, prop); return 0; } /** @page engine_osc_namespace *

/move

* @arg @p response-id :: Integer * @arg @p old-path :: String * @arg @p new-path :: String * * @par * MOVE an object to a new path. */ int OSCEngineReceiver::_move_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { const char* old_path = &argv[1]->s; const char* new_path = &argv[2]->s; move(old_path, new_path); return 0; } /** @page engine_osc_namespace *

/delete

* @arg @p response-id :: Integer * @arg @p path :: String * * @par * DELETE an object. */ int OSCEngineReceiver::_del_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { const char* uri = &argv[1]->s; del(uri); return 0; } /** @page engine_osc_namespace *

/connect

* @arg @p response-id :: Integer * @arg @p src-port-path :: String * @arg @p dst-port-path :: String * * @par * Connect two ports (which must be in the same patch). */ int OSCEngineReceiver::_connect_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { const char* src_port_path = &argv[1]->s; const char* dst_port_path = &argv[2]->s; connect(src_port_path, dst_port_path); return 0; } /** @page engine_osc_namespace *

/disconnect

* @arg @p response-id :: Integer * @arg @p src-port-path :: String * @arg @p dst-port-path :: String * * @par * Disconnect two ports. */ int OSCEngineReceiver::_disconnect_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { const char* src_port_path = &argv[1]->s; const char* dst_port_path = &argv[2]->s; disconnect(src_port_path, dst_port_path); return 0; } /** @page engine_osc_namespace *

/disconnect_all

* @arg @p response-id :: Integer * @arg @p patch-path :: String * @arg @p object-path :: String * * @par * Disconnect all connections to/from a node/port. */ int OSCEngineReceiver::_disconnect_all_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { const char* patch_path = &argv[1]->s; const char* object_path = &argv[2]->s; disconnect_all(patch_path, object_path); return 0; } /** @page engine_osc_namespace *

/note_on

* @arg @p response-id :: Integer * @arg @p node-path :: String * @arg @p note-num (int) * @arg @p velocity (int) * * @par * Trigger a note-on, just as if it came from MIDI. */ int OSCEngineReceiver::_note_on_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { /* const char* node_path = &argv[1]->s; const uint8_t note_num = argv[2]->i; const uint8_t velocity = argv[3]->i; */ warn << "TODO: OSC note on" << endl; //note_on(node_path, note_num, velocity); return 0; } /** @page engine_osc_namespace *

/note_off

* @arg @p response-id :: Integer * @arg @p node-path :: String * @arg @p note-num :: Integer * * @par * Trigger a note-off, just as if it came from MIDI. */ int OSCEngineReceiver::_note_off_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { /* const char* patch_path = &argv[1]->s; const uint8_t note_num = argv[2]->i; */ warn << "TODO: OSC note off" << endl; //note_off(patch_path, note_num); return 0; } /** @page engine_osc_namespace *

/all_notes_off

* @arg @p response-id :: Integer * @arg @p patch-path :: String * * @par * Trigger a note-off for all voices, just as if it came from MIDI. */ int OSCEngineReceiver::_all_notes_off_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { /* const char* patch_path = &argv[1]->s; */ warn << "TODO: OSC all notes off" << endl; //all_notes_off(patch_path); return 0; } /** @page engine_osc_namespace *

/set_property

* @arg @p response-id :: Integer * @arg @p uri :: URI String * @arg @p key :: URI String * @arg @p value :: String * * @par * Set a property on a graph object. */ int OSCEngineReceiver::_set_property_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { if (argc != 4 || types[0] != 'i' || types[1] != 's' || types[2] != 's') return 1; const char* object_path = &argv[1]->s; const char* key = &argv[2]->s; Raul::Atom value = Raul::AtomLiblo::lo_arg_to_atom(types[3], argv[3]); set_property(object_path, key, value); return 0; } /** @page engine_osc_namespace *

/request_property

* @arg @p response-id :: Integer * @arg @p uri :: URI String * @arg @p key :: URI String * * Request the value of a property on an object. */ int OSCEngineReceiver::_request_property_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg) { const char* object_path = &argv[1]->s; const char* key = &argv[2]->s; request_property(object_path, key); return 0; } // Static Callbacks // // Display incoming OSC messages (for debugging purposes) int OSCEngineReceiver::generic_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg, void* user_data) { printf("[OSCEngineReceiver] %s (%s)\t", path, types); for (int i=0; i < argc; ++i) { lo_arg_pp(lo_type(types[i]), argv[i]); printf("\t"); } printf("\n"); return 1; // not handled } int OSCEngineReceiver::unknown_cb(const char* path, const char* types, lo_arg** argv, int argc, lo_message msg, void* user_data) { const lo_address addr = lo_message_get_source(msg); char* const url = lo_address_get_url(addr); warn << "Unknown OSC command " << path << " (" << types << ") " << "received from " << url << endl; string error_msg = "Unknown command: "; error_msg.append(path).append(" ").append(types); lo_send(addr, "/error", "s", error_msg.c_str(), LO_ARGS_END); free(url); return 0; } } // namespace Server } // namespace Ingen