Add session-util to create new session
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session_utils/new_session.cc
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242
session_utils/new_session.cc
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#include <cstdlib>
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#include <getopt.h>
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#include <iostream>
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#include <glibmm.h>
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#include "ardour/audioengine.h"
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#include "ardour/filename_extensions.h"
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#include "ardour/template_utils.h"
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#include "common.h"
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using namespace std;
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using namespace ARDOUR;
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using namespace SessionUtils;
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static void
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usage (int status)
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{
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// help2man compatible format (standard GNU help-text)
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printf (UTILNAME " - create a new session from the commandline.\n\n");
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printf ("Usage: " UTILNAME " [ OPTIONS ] <session-dir> [session-name]\n\n");
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printf ("Options:\n\
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-L, --list-templates List available templates and exit\n\
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-h, --help Display this help and exit\n\
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-m, --master-channels <chn> Master-bus channel count (default 2)\n\
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-s, --samplerate <rate> Samplerate to use (default 48000)\n\
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-t, --template <template> Use given template for new session\n\
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-V, --version Print version information and exit\n\
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\n");
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printf ("\n\
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This tool creates a new Ardour session, optionally based on a\n\
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session-template.\n\
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\n\
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If the session-name is unspecified, the sesion-dir-name is used.\n\
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If specified, the tool expects a session-name without .ardour\n\
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file-name extension.\n\
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\n\
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If no template is specified, an empty session with a stereo master\n\
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bus is created. The -m option allows to specify the master-bus channel\n\
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count. If zero is used as channel count, no master-bus is created.\n\
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\n\
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Note: this tool can only use static session templates.\n\
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Interactive Lua init-scripts or dynamic templates are not supported.\n\
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\n");
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printf ("\n\
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Examples:\n\
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" UTILNAME " -s 44100 -m 4 /tmp/NewSession\n\
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\n");
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printf ("Report bugs to <http://tracker.ardour.org/>\n"
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"Website: <http://ardour.org/>\n");
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::exit (status);
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}
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static void
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list_templates ()
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{
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vector<TemplateInfo> templates;
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find_session_templates (templates, false);
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cout << "---- List of Session Templates ----\n";
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for (vector<TemplateInfo>::iterator x = templates.begin (); x != templates.end (); ++x) {
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cout << "[TPL] " << (*x).name << "\n";
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}
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cout << "----\n";
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}
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static std::string
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template_path_from_name (std::string const& name)
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{
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vector<TemplateInfo> templates;
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find_session_templates (templates, false);
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for (vector<TemplateInfo>::iterator x = templates.begin (); x != templates.end (); ++x) {
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if ((*x).name == name) {
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return (*x).path;
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}
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}
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return "";
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}
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static Session*
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create_new_session (string const& dir, string const& state, float sample_rate, int master_bus_chn, string const& template_path)
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{
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AudioEngine* engine = AudioEngine::create ();
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if (!engine->set_backend ("None (Dummy)", "Unit-Test", "")) {
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cerr << "Cannot create Audio/MIDI engine\n";
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::exit (EXIT_FAILURE);
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}
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engine->set_input_channels (256);
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engine->set_output_channels (256);
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if (engine->set_sample_rate (sample_rate)) {
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cerr << "Cannot set session's samplerate.\n";
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return 0;
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}
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if (engine->start () != 0) {
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cerr << "Cannot start Audio/MIDI engine\n";
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return 0;
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}
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string s = Glib::build_filename (dir, state + statefile_suffix);
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if (Glib::file_test (dir, Glib::FILE_TEST_EXISTS)) {
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cerr << "Session folder already exists '" << dir << "'\n";
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}
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if (Glib::file_test (s, Glib::FILE_TEST_EXISTS)) {
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cerr << "Session file exists '" << s << "'\n";
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return 0;
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}
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BusProfile bus_profile;
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BusProfile* bus_profile_ptr = NULL;
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if (master_bus_chn > 0) {
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bus_profile_ptr = &bus_profile;
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bus_profile.master_out_channels = master_bus_chn;
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}
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if (!template_path.empty ()) {
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bus_profile_ptr = NULL;
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}
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Session* session = new Session (*engine, dir, state, bus_profile_ptr, template_path);
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engine->set_session (session);
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return session;
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}
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int
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main (int argc, char* argv[])
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{
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int sample_rate = 48000;
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int master_bus_chn = 2;
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string template_path;
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const char* optstring = "Lm:hs:t:V";
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/* clang-format off */
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const struct option longopts[] = {
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{ "list-templates", no_argument, 0, 'L' },
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{ "help", no_argument, 0, 'h' },
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{ "master-channels", no_argument, 0, 'm' },
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{ "samplerate", required_argument, 0, 's' },
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{ "template", required_argument, 0, 't' },
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{ "version", no_argument, 0, 'V' },
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};
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/* clang-format on */
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int c = 0;
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while (EOF != (c = getopt_long (argc, argv,
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optstring, longopts, (int*)0))) {
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switch (c) {
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case 'L':
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list_templates ();
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exit (EXIT_SUCCESS);
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break;
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case 'm': {
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const int mc = atoi (optarg);
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if (mc >= 0 && mc < 128) {
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master_bus_chn = mc;
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} else {
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cerr << "Invalid master bus channel count\n";
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}
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} break;
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case 's': {
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const int sr = atoi (optarg);
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if (sr >= 8000 && sr <= 192000) {
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sample_rate = sr;
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} else {
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cerr << "Invalid Samplerate\n";
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}
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} break;
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case 't':
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template_path = template_path_from_name (optarg);
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if (template_path.empty ()) {
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cerr << "Invalid (non-existent) template:" << optarg << "\n";
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::exit (EXIT_FAILURE);
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}
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break;
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case 'V':
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printf ("ardour-utils version %s\n\n", VERSIONSTRING);
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printf ("Copyright (C) GPL 2019 Robin Gareus <robin@gareus.org>\n");
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exit (EXIT_SUCCESS);
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break;
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case 'h':
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usage (EXIT_SUCCESS);
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break;
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default:
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usage (EXIT_FAILURE);
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break;
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}
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}
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string snapshot_name;
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if (optind + 2 == argc) {
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snapshot_name = argv[optind + 1];
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} else if (optind + 1 == argc) {
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snapshot_name = Glib::path_get_basename (argv[optind]);
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} else {
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usage (EXIT_FAILURE);
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}
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if (snapshot_name.empty ()) {
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cerr << "Error: Invalid empty session/snapshot name.\n";
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::exit (EXIT_FAILURE);
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}
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/* all systems go */
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SessionUtils::init ();
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Session* s = 0;
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try {
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s = create_new_session (argv[optind], snapshot_name, sample_rate, master_bus_chn, template_path);
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} catch (ARDOUR::SessionException& e) {
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cerr << "Error: " << e.what () << "\n";
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} catch (...) {
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cerr << "Error: unknown exception.\n";
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}
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/* save is implicit when creating a new session */
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if (s) {
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cout << "Created session in '" << s->path () << "'" << endl;
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}
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SessionUtils::unload_session (s);
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SessionUtils::cleanup ();
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return 0;
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}
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