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-rw-r--r--libs/ardour/osc.cc480
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diff --git a/libs/ardour/osc.cc b/libs/ardour/osc.cc
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+++ b/libs/ardour/osc.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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include <iostream>
+#include <fstream>
+#include <cstdio>
+#include <cstdlib>
+#include <cerrno>
+#include <algorithm>
+
+#include <sys/poll.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include <pbd/pthread_utils.h>
+#include <pbd/file_utils.h>
+
+#include <ardour/osc.h>
+#include <ardour/session.h>
+#include <ardour/route.h>
+#include <ardour/audio_track.h>
+#include <ardour/filesystem_paths.h>
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace sigc;
+using namespace std;
+
+static void error_callback(int num, const char *m, const char *path)
+{
+#ifdef DEBUG
+ fprintf(stderr, "liblo server error %d in path %s: %s\n", num, path, m);
+#endif
+}
+
+OSC::OSC (uint32_t port)
+ : _port(port)
+{
+ _shutdown = false;
+ _osc_server = 0;
+ _osc_unix_server = 0;
+ _osc_thread = 0;
+}
+
+int
+OSC::start ()
+{
+ char tmpstr[255];
+
+ if (_osc_server) {
+ /* already started */
+ return 0;
+ }
+
+ for (int j=0; j < 20; ++j) {
+ snprintf(tmpstr, sizeof(tmpstr), "%d", _port);
+
+ if ((_osc_server = lo_server_new (tmpstr, error_callback))) {
+ break;
+ }
+#ifdef DEBUG
+ cerr << "can't get osc at port: " << _port << endl;
+#endif
+ _port++;
+ continue;
+ }
+
+#ifdef ARDOUR_OSC_UNIX_SERVER
+
+ // APPEARS sluggish for now
+
+ // attempt to create unix socket server too
+
+ snprintf(tmpstr, sizeof(tmpstr), "/tmp/sooperlooper_XXXXXX");
+ int fd = mkstemp(tmpstr);
+
+ if (fd >= 0 ) {
+ unlink (tmpstr);
+ close (fd);
+
+ _osc_unix_server = lo_server_new (tmpstr, error_callback);
+
+ if (_osc_unix_server) {
+ _osc_unix_socket_path = tmpstr;
+ }
+ }
+#endif
+
+ cerr << "OSC @ " << get_server_url () << endl;
+
+ sys::path url_file;
+
+ if (find_file_in_search_path (ardour_search_path() + system_config_search_path(),
+ "osc_url", url_file)) {
+ _osc_url_file = url_file.to_string();
+ ofstream urlfile;
+ urlfile.open(_osc_url_file.c_str(), ios::trunc);
+ if ( urlfile )
+ {
+ urlfile << get_server_url () << endl;
+ urlfile.close();
+ }
+ else
+ {
+ cerr << "Couldn't write '" << _osc_url_file << "'" <<endl;
+ }
+ }
+
+ register_callbacks();
+
+ // lo_server_thread_add_method(_sthread, NULL, NULL, OSC::_dummy_handler, this);
+
+ if (!init_osc_thread()) {
+ return -1;
+ }
+ return 0;
+}
+
+int
+OSC::stop ()
+{
+ if (_osc_server == 0) {
+ /* already stopped */
+ return 0;
+ }
+
+ // stop server thread
+ terminate_osc_thread();
+
+ lo_server_free (_osc_server);
+ _osc_server = 0;
+
+ if (!_osc_unix_socket_path.empty()) {
+ // unlink it
+ unlink(_osc_unix_socket_path.c_str());
+ }
+
+ if (! _osc_url_file.empty() ) {
+ unlink(_osc_url_file.c_str() );
+ }
+ return 0;
+}
+
+OSC::~OSC()
+{
+ stop ();
+}
+
+void
+OSC::register_callbacks()
+{
+ lo_server srvs[2];
+ lo_server serv;
+
+ srvs[0] = _osc_server;
+ srvs[1] = _osc_unix_server;
+
+ for (size_t i = 0; i < 2; ++i) {
+
+ if (!srvs[i]) {
+ continue;
+ }
+
+ serv = srvs[i];
+
+#define REGISTER_CALLBACK(serv,path,types, function) lo_server_add_method (serv, path, types, OSC::_ ## function, this)
+
+ REGISTER_CALLBACK (serv, "/ardour/add_marker", "", add_marker);
+ REGISTER_CALLBACK (serv, "/ardour/loop_toggle", "", loop_toggle);
+ REGISTER_CALLBACK (serv, "/ardour/goto_start", "", goto_start);
+ REGISTER_CALLBACK (serv, "/ardour/goto_end", "", goto_end);
+ REGISTER_CALLBACK (serv, "/ardour/rewind", "", rewind);
+ REGISTER_CALLBACK (serv, "/ardour/ffwd", "", ffwd);
+ REGISTER_CALLBACK (serv, "/ardour/transport_stop", "", transport_stop);
+ REGISTER_CALLBACK (serv, "/ardour/transport_play", "", transport_play);
+ REGISTER_CALLBACK (serv, "/ardour/set_transport_speed", "f", set_transport_speed);
+ REGISTER_CALLBACK (serv, "/ardour/save_state", "", save_state);
+ REGISTER_CALLBACK (serv, "/ardour/prev_marker", "", prev_marker);
+ REGISTER_CALLBACK (serv, "/ardour/next_marker", "", next_marker);
+ REGISTER_CALLBACK (serv, "/ardour/undo", "", undo);
+ REGISTER_CALLBACK (serv, "/ardour/redo", "", redo);
+ REGISTER_CALLBACK (serv, "/ardour/toggle_punch_in", "", toggle_punch_in);
+ REGISTER_CALLBACK (serv, "/ardour/toggle_punch_out", "", toggle_punch_out);
+ REGISTER_CALLBACK (serv, "/ardour/rec_enable_toggle", "", rec_enable_toggle);
+ REGISTER_CALLBACK (serv, "/ardour/toggle_all_rec_enables", "", toggle_all_rec_enables);
+
+#if 0
+ REGISTER_CALLBACK (serv, "/ardour/*/#current_value", "", current_value);
+ REGISTER_CALLBACK (serv, "/ardour/set", "", set);
+#endif
+
+#if 0
+ // un/register_update args= s:ctrl s:returl s:retpath
+ lo_server_add_method(serv, "/register_update", "sss", OSC::global_register_update_handler, this);
+ lo_server_add_method(serv, "/unregister_update", "sss", OSC::global_unregister_update_handler, this);
+ lo_server_add_method(serv, "/register_auto_update", "siss", OSC::global_register_auto_update_handler, this);
+ lo_server_add_method(serv, "/unregister_auto_update", "sss", OSC::_global_unregister_auto_update_handler, this);
+#endif
+ }
+}
+
+bool
+OSC::init_osc_thread ()
+{
+ // create new thread to run server
+ if (pipe (_request_pipe)) {
+ cerr << "Cannot create osc request signal pipe" << strerror (errno) << endl;
+ return false;
+ }
+
+ if (fcntl (_request_pipe[0], F_SETFL, O_NONBLOCK)) {
+ cerr << "osc: cannot set O_NONBLOCK on signal read pipe " << strerror (errno) << endl;
+ return false;
+ }
+
+ if (fcntl (_request_pipe[1], F_SETFL, O_NONBLOCK)) {
+ cerr << "osc: cannot set O_NONBLOCK on signal write pipe " << strerror (errno) << endl;
+ return false;
+ }
+
+ pthread_attr_t attr;
+ pthread_attr_init(&attr);
+ pthread_attr_setstacksize(&attr, 500000);
+
+ pthread_create (&_osc_thread, &attr, &OSC::_osc_receiver, this);
+ if (!_osc_thread) {
+ return false;
+ }
+ pthread_attr_destroy(&attr);
+
+ //pthread_detach (_osc_thread);
+ return true;
+}
+
+void
+OSC::terminate_osc_thread ()
+{
+ void* status;
+
+ _shutdown = true;
+
+ poke_osc_thread ();
+
+ pthread_join (_osc_thread, &status);
+}
+
+void
+OSC::poke_osc_thread ()
+{
+ char c;
+
+ if (write (_request_pipe[1], &c, 1) != 1) {
+ cerr << "cannot send signal to osc thread! " << strerror (errno) << endl;
+ }
+}
+
+std::string
+OSC::get_server_url()
+{
+ string url;
+ char * urlstr;
+
+ if (_osc_server) {
+ urlstr = lo_server_get_url (_osc_server);
+ url = urlstr;
+ free (urlstr);
+ }
+
+ return url;
+}
+
+std::string
+OSC::get_unix_server_url()
+{
+ string url;
+ char * urlstr;
+
+ if (_osc_unix_server) {
+ urlstr = lo_server_get_url (_osc_unix_server);
+ url = urlstr;
+ free (urlstr);
+ }
+
+ return url;
+}
+
+
+/* server thread */
+
+void *
+OSC::_osc_receiver(void * arg)
+{
+ PBD::ThreadCreated (pthread_self(), X_("OSC"));
+
+ static_cast<OSC*> (arg)->osc_receiver();
+ return 0;
+}
+
+void
+OSC::osc_receiver()
+{
+ struct pollfd pfd[3];
+ int fds[3];
+ lo_server srvs[3];
+ int nfds = 0;
+ int timeout = -1;
+ int ret;
+
+ fds[0] = _request_pipe[0];
+ nfds++;
+
+ if (_osc_server && lo_server_get_socket_fd(_osc_server) >= 0) {
+ fds[nfds] = lo_server_get_socket_fd(_osc_server);
+ srvs[nfds] = _osc_server;
+ nfds++;
+ }
+
+ if (_osc_unix_server && lo_server_get_socket_fd(_osc_unix_server) >= 0) {
+ fds[nfds] = lo_server_get_socket_fd(_osc_unix_server);
+ srvs[nfds] = _osc_unix_server;
+ nfds++;
+ }
+
+
+ while (!_shutdown) {
+
+ for (int i=0; i < nfds; ++i) {
+ pfd[i].fd = fds[i];
+ pfd[i].events = POLLIN|POLLPRI|POLLHUP|POLLERR;
+ pfd[i].revents = 0;
+ }
+
+ again:
+ //cerr << "poll on " << nfds << " for " << timeout << endl;
+ if ((ret = poll (pfd, nfds, timeout)) < 0) {
+ if (errno == EINTR) {
+ /* gdb at work, perhaps */
+ goto again;
+ }
+
+ cerr << "OSC thread poll failed: " << strerror (errno) << endl;
+
+ break;
+ }
+
+ //cerr << "poll returned " << ret << " pfd[0].revents = " << pfd[0].revents << " pfd[1].revents = " << pfd[1].revents << endl;
+
+ if (_shutdown) {
+ break;
+ }
+
+ if ((pfd[0].revents & ~POLLIN)) {
+ cerr << "OSC: error polling extra port" << endl;
+ break;
+ }
+
+ for (int i=1; i < nfds; ++i) {
+ if (pfd[i].revents & POLLIN)
+ {
+ // this invokes callbacks
+ //cerr << "invoking recv on " << pfd[i].fd << endl;
+ lo_server_recv(srvs[i]);
+ }
+ }
+
+ }
+
+ //cerr << "SL engine shutdown" << endl;
+
+ if (_osc_server) {
+ int fd = lo_server_get_socket_fd(_osc_server);
+ if (fd >=0) {
+ // hack around
+ close(fd);
+ }
+ lo_server_free (_osc_server);
+ _osc_server = 0;
+ }
+
+ if (_osc_unix_server) {
+ cerr << "freeing unix server" << endl;
+ lo_server_free (_osc_unix_server);
+ _osc_unix_server = 0;
+ }
+
+ close(_request_pipe[0]);
+ close(_request_pipe[1]);
+}
+
+void
+OSC::set_session (Session& s)
+{
+ session = &s;
+ session->GoingAway.connect (mem_fun (*this, &OSC::session_going_away));
+}
+
+void
+OSC::session_going_away ()
+{
+ session = 0;
+}
+
+/* path callbacks */
+
+int
+OSC::current_value (const char *path, const char *types, lo_arg **argv, int argc, void *data, void* user_data)
+{
+#if 0
+ const char* returl;
+
+ if (argc < 3 || types == 0 || strlen (types) < 3 || types[0] != 's' || types[1] != 's' || types[2] != s) {
+ return 1;
+ }
+
+ const char *returl = argv[1]->s;
+ lo_address addr = find_or_cache_addr (returl);
+
+ const char *retpath = argv[2]->s;
+
+
+ if (strcmp (argv[0]->s, "transport_frame")) {
+
+ if (session) {
+ lo_send (addr, retpath, "i", session->transport_frame());
+ }
+
+ } else if (strcmp (argv[0]->s, "transport_speed")) {
+
+ if (session) {
+ lo_send (addr, retpath, "i", session->transport_frame());
+ }
+
+ } else if (strcmp (argv[0]->s, "transport_locked")) {
+
+ if (session) {
+ lo_send (addr, retpath, "i", session->transport_frame());
+ }
+
+ } else if (strcmp (argv[0]->s, "punch_in") {
+
+ if (session) {
+ lo_send (addr, retpath, "i", session->transport_frame());
+ }
+
+ } else if (strcmp (argv[0]->s, "punch_out") {
+
+ if (session) {
+ lo_send (addr, retpath, "i", session->transport_frame());
+ }
+
+ } else if (strcmp (argv[0]->s, "rec_enable") {
+
+ if (session) {
+ lo_send (addr, retpath, "i", session->transport_frame());
+ }
+
+ } else {
+
+ /* error */
+ }
+#endif
+ return 0;
+}
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