ardour/session_utils/new_session.cc

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/*
* Copyright (C) 2019 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
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#include <cstdlib>
#include <getopt.h>
#include <iostream>
#include <glibmm.h>
#include "ardour/audioengine.h"
#include "ardour/filename_extensions.h"
#include "ardour/template_utils.h"
#include "common.h"
using namespace std;
using namespace ARDOUR;
using namespace SessionUtils;
static void usage ()
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{
// help2man compatible format (standard GNU help-text)
printf (UTILNAME " - create a new session from the commandline.\n\n");
printf ("Usage: " UTILNAME " [ OPTIONS ] <session-dir> [session-name]\n\n");
printf ("Options:\n\
-L, --list-templates List available templates and exit\n\
-h, --help Display this help and exit\n\
-m, --master-channels <chn> Master-bus channel count (default 2)\n\
-s, --samplerate <rate> Samplerate to use (default 48000)\n\
-t, --template <template> Use given template for new session\n\
-V, --version Print version information and exit\n\
\n");
printf ("\n\
This tool creates a new Ardour session, optionally based on a\n\
session-template.\n\
\n\
If the session-name is unspecified, the sesion-dir-name is used.\n\
If specified, the tool expects a session-name without .ardour\n\
file-name extension.\n\
\n\
If no template is specified, an empty session with a stereo master\n\
bus is created. The -m option allows to specify the master-bus channel\n\
count. If zero is used as channel count, no master-bus is created.\n\
\n\
Note: this tool can only use static session templates.\n\
Interactive Lua init-scripts or dynamic templates are not supported.\n\
\n");
printf ("\n\
Examples:\n\
" UTILNAME " -s 44100 -m 4 /tmp/NewSession\n\
\n");
printf ("Report bugs to <http://tracker.ardour.org/>\n"
"Website: <http://ardour.org/>\n");
::exit (EXIT_SUCCESS);
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}
static void
list_templates ()
{
vector<TemplateInfo> templates;
find_session_templates (templates, false);
cout << "---- List of Session Templates ----\n";
for (vector<TemplateInfo>::iterator x = templates.begin (); x != templates.end (); ++x) {
cout << "[TPL] " << (*x).name << "\n";
}
cout << "----\n";
}
static std::string
template_path_from_name (std::string const& name)
{
vector<TemplateInfo> templates;
find_session_templates (templates, false);
for (vector<TemplateInfo>::iterator x = templates.begin (); x != templates.end (); ++x) {
if ((*x).name == name) {
return (*x).path;
}
}
return "";
}
static Session*
create_new_session (string const& dir, string const& state, float sample_rate, int master_bus_chn, string const& template_path)
{
AudioEngine* engine = AudioEngine::create ();
if (!engine->set_backend ("None (Dummy)", "Unit-Test", "")) {
cerr << "Cannot create Audio/MIDI engine\n";
::exit (EXIT_FAILURE);
}
engine->set_input_channels (256);
engine->set_output_channels (256);
if (engine->set_sample_rate (sample_rate)) {
cerr << "Cannot set session's samplerate.\n";
return 0;
}
if (engine->start () != 0) {
cerr << "Cannot start Audio/MIDI engine\n";
return 0;
}
string s = Glib::build_filename (dir, state + statefile_suffix);
if (Glib::file_test (dir, Glib::FILE_TEST_EXISTS)) {
cerr << "Session folder already exists '" << dir << "'\n";
}
if (Glib::file_test (s, Glib::FILE_TEST_EXISTS)) {
cerr << "Session file exists '" << s << "'\n";
return 0;
}
BusProfile bus_profile;
BusProfile* bus_profile_ptr = NULL;
if (master_bus_chn > 0) {
bus_profile_ptr = &bus_profile;
bus_profile.master_out_channels = master_bus_chn;
}
if (!template_path.empty ()) {
bus_profile_ptr = NULL;
}
Session* session = new Session (*engine, dir, state, bus_profile_ptr, template_path);
engine->set_session (session);
return session;
}
int
main (int argc, char* argv[])
{
int sample_rate = 48000;
int master_bus_chn = 2;
string template_path;
const char* optstring = "Lm:hs:t:V";
/* clang-format off */
const struct option longopts[] = {
{ "list-templates", no_argument, 0, 'L' },
{ "help", no_argument, 0, 'h' },
{ "master-channels", no_argument, 0, 'm' },
{ "samplerate", required_argument, 0, 's' },
{ "template", required_argument, 0, 't' },
{ "version", no_argument, 0, 'V' },
};
/* clang-format on */
int c = 0;
while (EOF != (c = getopt_long (argc, argv,
optstring, longopts, (int*)0))) {
switch (c) {
case 'L':
list_templates ();
exit (EXIT_SUCCESS);
break;
case 'm': {
const int mc = atoi (optarg);
if (mc >= 0 && mc < 128) {
master_bus_chn = mc;
} else {
cerr << "Invalid master bus channel count\n";
}
} break;
case 's': {
const int sr = atoi (optarg);
if (sr >= 8000 && sr <= 192000) {
sample_rate = sr;
} else {
cerr << "Invalid Samplerate\n";
}
} break;
case 't':
template_path = template_path_from_name (optarg);
if (template_path.empty ()) {
cerr << "Invalid (non-existent) template:" << optarg << "\n";
::exit (EXIT_FAILURE);
}
break;
case 'V':
printf ("ardour-utils version %s\n\n", VERSIONSTRING);
printf ("Copyright (C) GPL 2019 Robin Gareus <robin@gareus.org>\n");
exit (EXIT_SUCCESS);
break;
case 'h':
usage ();
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break;
default:
cerr << "Error: unrecognized option. See --help for usage information.\n";
::exit (EXIT_FAILURE);
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break;
}
}
string snapshot_name;
if (optind + 2 == argc) {
snapshot_name = argv[optind + 1];
} else if (optind + 1 == argc) {
snapshot_name = Glib::path_get_basename (argv[optind]);
} else {
cerr << "Error: Missing parameter. See --help for usage information.\n";
::exit (EXIT_FAILURE);
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}
if (snapshot_name.empty ()) {
cerr << "Error: Invalid empty session/snapshot name.\n";
::exit (EXIT_FAILURE);
}
/* all systems go */
SessionUtils::init ();
Session* s = 0;
try {
s = create_new_session (argv[optind], snapshot_name, sample_rate, master_bus_chn, template_path);
} catch (ARDOUR::SessionException& e) {
cerr << "Error: " << e.what () << "\n";
} catch (...) {
cerr << "Error: unknown exception.\n";
}
/* save is implicit when creating a new session */
if (s) {
cout << "Created session in '" << s->path () << "'" << endl;
}
SessionUtils::unload_session (s);
SessionUtils::cleanup ();
return 0;
}