headless/load_session.cc

   1 #include <cstdlib>
   2 #include <getopt.h>
   3 #include <iostream>
   4
   5 #ifndef PLATFORM_WINDOWS
   6 #include <signal.h>
   7 #endif
   8
   9 #include <glibmm.h>
  10
  11 #include "pbd/convert.h"
  12 #include "pbd/crossthread.h"
  13 #include "pbd/debug.h"
  14 #include "pbd/error.h"
  15 #include "pbd/failed_constructor.h"
  16
  17 #include "ardour/ardour.h"
  18 #include "ardour/audioengine.h"
  19 #include "ardour/revision.h"
  20 #include "ardour/session.h"
  21
  22 #include "control_protocol/control_protocol.h"
  23
  24 #include "misc.h"
  25
  26 using namespace std;
  27 using namespace ARDOUR;
  28 using namespace PBD;
  29
  30 static const char* localedir = LOCALEDIR;
  31
  32 static string             backend_client_name;
  33 static string             backend_name = "JACK";
  34 static CrossThreadChannel xthread (true);
  35 static TestReceiver       test_receiver;
  36
  37 /** @param dir Session directory.
  38  *  @param state Session state file, without .ardour suffix.
  39  */
  40 static Session*
  41 load_session (string dir, string state)
  42 {
  43         SessionEvent::create_per_thread_pool ("test", 512);
  44
  45         test_receiver.listen_to (error);
  46         test_receiver.listen_to (info);
  47         test_receiver.listen_to (fatal);
  48         test_receiver.listen_to (warning);
  49
  50         AudioEngine* engine = AudioEngine::create ();
  51
  52         if (!engine->set_backend (backend_name, backend_client_name, "")) {
  53                 std::cerr << "Cannot set Audio/MIDI engine backend\n";
  54                 exit (EXIT_FAILURE);
  55         }
  56
  57         if (engine->start () != 0) {
  58                 std::cerr << "Cannot start Audio/MIDI engine\n";
  59                 exit (EXIT_FAILURE);
  60         }
  61
  62         Session* session = new Session (*engine, dir, state);
  63         engine->set_session (session);
  64         return session;
  65 }
  66
  67 static void
  68 access_action (const std::string& action_group, const std::string& action_item)
  69 {
  70         if (action_group == "Common" && action_item == "Quit") {
  71                 xthread.deliver ('x');
  72         }
  73 }
  74
  75 static void
  76 engine_halted (const char* reason)
  77 {
  78         cerr << "The audio backend has been shutdown";
  79         if (reason && strlen (reason) > 0) {
  80                 cerr << ": " << reason;
  81         } else {
  82                 cerr << ".";
  83         }
  84         cerr << endl;
  85         xthread.deliver ('x');
  86 }
  87
  88 #ifndef PLATFORM_WINDOWS
  89 static void
  90 wearedone (int)
  91 {
  92         cerr << "caught signal - terminating." << endl;
  93         xthread.deliver ('x');
  94 }
  95 #endif
  96
  97 static void
  98 print_version ()
  99 {
 100         cout
 101             << PROGRAM_NAME
 102             << VERSIONSTRING
 103             << " (built using "
 104             << ARDOUR::revision
 105 #ifdef __GNUC__
 106             << " and GCC version " << __VERSION__
 107 #endif
 108             << ')'
 109             << endl;
 110 }
 111
 112 static void
 113 print_help ()
 114 {
 115         cout << "Usage: hardour [OPTIONS]... DIR SNAPSHOT_NAME\n\n"
 116              << "  DIR                         Directory/Folder to load session from\n"
 117              << "  SNAPSHOT_NAME               Name of session/snapshot to load (without .ardour at end\n"
 118              << "  -v, --version               Show version information\n"
 119              << "  -h, --help                  Print this message\n"
 120              << "  -c, --name <name>           Use a specific backend client name, default is ardour\n"
 121              << "  -d, --disable-plugins       Disable all plugins in an existing session\n"
 122              << "  -D, --debug <options>       Set debug flags. Use \"-D list\" to see available options\n"
 123              << "  -O, --no-hw-optimizations   Disable h/w specific optimizations\n"
 124              << "  -P, --no-connect-ports      Do not connect any ports at startup\n"
 125 #ifdef WINDOWS_VST_SUPPORT
 126              << "  -V, --novst                 Do not use VST support\n"
 127 #endif
 128             ;
 129 }
 130
 131 int
 132 main (int argc, char* argv[])
 133 {
 134         const char* optstring = "vhBdD:c:VOU:P";
 135
 136         /* clang-format off */
 137         const struct option longopts[] = {
 138                 { "version",             no_argument,       0, 'v' },
 139                 { "help",                no_argument,       0, 'h' },
 140                 { "bypass-plugins",      no_argument,       0, 'B' },
 141                 { "disable-plugins",     no_argument,       0, 'd' },
 142                 { "debug",               required_argument, 0, 'D' },
 143                 { "name",                required_argument, 0, 'c' },
 144                 { "novst",               no_argument,       0, 'V' },
 145                 { "no-hw-optimizations", no_argument,       0, 'O' },
 146                 { "no-connect-ports",    no_argument,       0, 'P' },
 147                 { 0, 0, 0, 0 }
 148         };
 149         /* clang-format on */
 150
 151         bool use_vst             = true;
 152         bool try_hw_optimization = true;
 153
 154         backend_client_name = PBD::downcase (std::string (PROGRAM_NAME));
 155
 156         int c;
 157         while ((c = getopt_long (argc, argv, optstring, longopts, (int*)0)) != EOF) {
 158                 switch (c) {
 159                         case 0:
 160                                 break;
 161
 162                         case 'v':
 163                                 print_version ();
 164                                 exit (EXIT_SUCCESS);
 165                                 break;
 166
 167                         case 'h':
 168                                 print_help ();
 169                                 exit (EXIT_SUCCESS);
 170                                 break;
 171
 172                         case 'c':
 173                                 backend_client_name = optarg;
 174                                 break;
 175
 176                         case 'B':
 177                                 ARDOUR::Session::set_bypass_all_loaded_plugins (true);
 178                                 break;
 179
 180                         case 'd':
 181                                 ARDOUR::Session::set_disable_all_loaded_plugins (true);
 182                                 break;
 183
 184                         case 'D':
 185                                 if (PBD::parse_debug_options (optarg)) {
 186                                         exit (EXIT_SUCCESS);
 187                                 }
 188                                 break;
 189
 190                         case 'O':
 191                                 try_hw_optimization = false;
 192                                 break;
 193
 194                         case 'P':
 195                                 ARDOUR::Port::set_connecting_blocked (true);
 196                                 break;
 197
 198                         case 'V':
 199 #ifdef WINDOWS_VST_SUPPORT
 200                                 use_vst = false;
 201 #endif /* WINDOWS_VST_SUPPORT */
 202                                 break;
 203
 204                         default:
 205                                 print_help ();
 206                                 exit (EXIT_FAILURE);
 207                 }
 208         }
 209
 210         if (argc < 3) {
 211                 print_help ();
 212                 exit (EXIT_FAILURE);
 213         }
 214
 215         if (!ARDOUR::init (use_vst, try_hw_optimization, localedir)) {
 216                 cerr << "Ardour failed to initialize\n"
 217                      << endl;
 218                 exit (EXIT_FAILURE);
 219         }
 220
 221         Session* s = 0;
 222
 223         try {
 224                 s = load_session (argv[optind], argv[optind + 1]);
 225         } catch (failed_constructor& e) {
 226                 cerr << "failed_constructor: " << e.what () << "\n";
 227                 exit (EXIT_FAILURE);
 228         } catch (AudioEngine::PortRegistrationFailure& e) {
 229                 cerr << "PortRegistrationFailure: " << e.what () << "\n";
 230                 exit (EXIT_FAILURE);
 231         } catch (exception& e) {
 232                 cerr << "exception: " << e.what () << "\n";
 233                 exit (EXIT_FAILURE);
 234         } catch (...) {
 235                 cerr << "unknown exception.\n";
 236                 exit (EXIT_FAILURE);
 237         }
 238
 239         /* allow signal propagation, callback/thread-pool setup, etc
 240          * similar to to GUI "first idle"
 241          */
 242         Glib::usleep (1000000); // 1 sec
 243
 244         if (!s) {
 245                 cerr << "failed_to load session\n";
 246                 exit (EXIT_FAILURE);
 247         }
 248
 249         PBD::ScopedConnectionList con;
 250         BasicUI::AccessAction.connect_same_thread (con, boost::bind (&access_action, _1, _2));
 251         AudioEngine::instance ()->Halted.connect_same_thread (con, boost::bind (&engine_halted, _1));
 252
 253 #ifndef PLATFORM_WINDOWS
 254         signal (SIGINT, wearedone);
 255         signal (SIGTERM, wearedone);
 256 #endif
 257
 258         s->request_transport_speed (1.0);
 259
 260         char msg;
 261         do {
 262         } while (0 == xthread.receive (msg, true));
 263
 264         AudioEngine::instance ()->remove_session ();
 265         delete s;
 266         AudioEngine::instance ()->stop ();
 267
 268         AudioEngine::destroy ();
 269         return 0;
 270 }