headless/load_session.cc

   1 #include <iostream>
   2 #include <cstdlib>
   3 #include <getopt.h>
   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/failed_constructor.h"
  14 #include "pbd/error.h"
  15 #include "pbd/debug.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 (1);
  55         }
  56
  57         if (engine->start () != 0) {
  58                 std::cerr << "Cannot start Audio/MIDI engine\n";
  59                 ::exit (1);
  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 wearedone (int) {
  90         cerr << "caught signal - terminating." << endl;
  91         xthread.deliver ('x');
  92 }
  93 #endif
  94
  95 static void
  96 print_version ()
  97 {
  98         cout
  99                 << PROGRAM_NAME
 100                 << VERSIONSTRING
 101                 << " (built using "
 102                 << ARDOUR::revision
 103 #ifdef __GNUC__
 104                 << " and GCC version " << __VERSION__
 105 #endif
 106                 << ')'
 107                 << endl;
 108 }
 109
 110 static void
 111 print_help ()
 112 {
 113         cout << "Usage: hardour [OPTIONS]... DIR SNAPSHOT_NAME\n\n"
 114              << "  DIR                         Directory/Folder to load session from\n"
 115              << "  SNAPSHOT_NAME               Name of session/snapshot to load (without .ardour at end\n"
 116              << "  -v, --version               Show version information\n"
 117              << "  -h, --help                  Print this message\n"
 118              << "  -c, --name <name>           Use a specific backend client name, default is ardour\n"
 119              << "  -d, --disable-plugins       Disable all plugins in an existing session\n"
 120              << "  -D, --debug <options>       Set debug flags. Use \"-D list\" to see available options\n"
 121              << "  -O, --no-hw-optimizations   Disable h/w specific optimizations\n"
 122              << "  -P, --no-connect-ports      Do not connect any ports at startup\n"
 123 #ifdef WINDOWS_VST_SUPPORT
 124              << "  -V, --novst                 Do not use VST support\n"
 125 #endif
 126                 ;
 127 }
 128
 129 int main (int argc, char* argv[])
 130 {
 131         const char *optstring = "vhBdD:c:VOU:P";
 132
 133         const struct option longopts[] = {
 134                 { "version", 0, 0, 'v' },
 135                 { "help", 0, 0, 'h' },
 136                 { "bypass-plugins", 1, 0, 'B' },
 137                 { "disable-plugins", 1, 0, 'd' },
 138                 { "debug", 1, 0, 'D' },
 139                 { "name", 1, 0, 'c' },
 140                 { "novst", 0, 0, 'V' },
 141                 { "no-hw-optimizations", 0, 0, 'O' },
 142                 { "uuid", 1, 0, 'U' },
 143                 { "no-connect-ports", 0, 0, 'P' },
 144                 { 0, 0, 0, 0 }
 145         };
 146
 147         int option_index = 0;
 148         int c = 0;
 149
 150         bool use_vst = true;
 151         bool try_hw_optimization = true;
 152
 153         backend_client_name = PBD::downcase (std::string(PROGRAM_NAME));
 154
 155         while (1) {
 156                 c = getopt_long (argc, argv, optstring, longopts, &option_index);
 157
 158                 if (c == -1) {
 159                         break;
 160                 }
 161
 162                 switch (c) {
 163                 case 0:
 164                         break;
 165
 166                 case 'v':
 167                         print_version ();
 168                         ::exit (0);
 169                         break;
 170
 171                 case 'h':
 172                         print_help ();
 173                         exit (0);
 174                         break;
 175
 176                 case 'c':
 177                         backend_client_name = optarg;
 178                         break;
 179
 180                 case 'B':
 181                         ARDOUR::Session::set_bypass_all_loaded_plugins (true);
 182                         break;
 183
 184                 case 'd':
 185                         ARDOUR::Session::set_disable_all_loaded_plugins (true);
 186                         break;
 187
 188                 case 'D':
 189                         if (PBD::parse_debug_options (optarg)) {
 190                                 ::exit (1);
 191                         }
 192                         break;
 193
 194                 case 'O':
 195                         try_hw_optimization = false;
 196                         break;
 197
 198                 case 'P':
 199                         ARDOUR::Port::set_connecting_blocked (true);
 200                         break;
 201
 202                 case 'V':
 203 #ifdef WINDOWS_VST_SUPPORT
 204                         use_vst = false;
 205 #endif /* WINDOWS_VST_SUPPORT */
 206                         break;
 207
 208                 default:
 209                         print_help ();
 210                         ::exit (1);
 211                 }
 212         }
 213
 214         if (argc < 3) {
 215                 print_help ();
 216                 ::exit (1);
 217         }
 218
 219         if (!ARDOUR::init (use_vst, try_hw_optimization, localedir)) {
 220                 cerr << "Ardour failed to initialize\n" << endl;
 221                 ::exit (1);
 222         }
 223
 224         Session* s = 0;
 225
 226         try {
 227                 s = load_session (argv[optind], argv[optind+1]);
 228         } catch (failed_constructor& e) {
 229                 cerr << "failed_constructor: " << e.what() << "\n";
 230                 exit (EXIT_FAILURE);
 231         } catch (AudioEngine::PortRegistrationFailure& e) {
 232                 cerr << "PortRegistrationFailure: " << e.what() << "\n";
 233                 exit (EXIT_FAILURE);
 234         } catch (exception& e) {
 235                 cerr << "exception: " << e.what() << "\n";
 236                 exit (EXIT_FAILURE);
 237         } catch (...) {
 238                 cerr << "unknown exception.\n";
 239                 exit (EXIT_FAILURE);
 240         }
 241
 242         PBD::ScopedConnectionList con;
 243         BasicUI::AccessAction.connect_same_thread (con, boost::bind (&access_action, _1, _2));
 244         AudioEngine::instance()->Halted.connect_same_thread (con, boost::bind (&engine_halted, _1));
 245
 246 #ifndef PLATFORM_WINDOWS
 247         signal(SIGINT, wearedone);
 248         signal(SIGTERM, wearedone);
 249 #endif
 250
 251         s->request_transport_speed (1.0);
 252
 253         char msg;
 254         do {} while (0 == xthread.receive (msg, true));
 255
 256         AudioEngine::instance()->remove_session ();
 257         delete s;
 258         AudioEngine::instance()->stop ();
 259
 260         AudioEngine::destroy ();
 261
 262         return 0;
 263 }