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session_state.cc
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/*
* Copyright (C) 1999-2019 Paul Davis <[email protected]>
* Copyright (C) 2005-2006 Taybin Rutkin <[email protected]>
* Copyright (C) 2006-2014 David Robillard <[email protected]>
* Copyright (C) 2006-2016 Tim Mayberry <[email protected]>
* Copyright (C) 2006 Jesse Chappell <[email protected]>
* Copyright (C) 2007-2012 Carl Hetherington <[email protected]>
* Copyright (C) 2008-2009 Hans Baier <[email protected]>
* Copyright (C) 2012-2019 Robin Gareus <[email protected]>
* Copyright (C) 2013-2016 John Emmas <[email protected]>
* Copyright (C) 2013-2017 Nick Mainsbridge <[email protected]>
* Copyright (C) 2014-2018 Ben Loftis <[email protected]>
* Copyright (C) 2017 Johannes Mueller <[email protected]>
*
* 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.
*/
#ifdef WAF_BUILD
#include "libardour-config.h"
#endif
#include <stdint.h>
#include <algorithm>
#include <string>
#include <cerrno>
#include <cstdio> /* snprintf(3) ... grrr */
#include <cmath>
#include <unistd.h>
#include <climits>
#include <signal.h>
#include <sys/time.h>
/* for open(2) */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
#if defined(__APPLE__) || defined(__FreeBSD__)
#include <sys/param.h>
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
#include <glib.h>
#include "pbd/gstdio_compat.h"
#include "pbd/locale_guard.h"
#include <glibmm.h>
#include <glibmm/threads.h>
#include <glibmm/fileutils.h>
#include <boost/algorithm/string.hpp>
#include "midi++/mmc.h"
#include "midi++/port.h"
#include "evoral/SMF.h"
#include "pbd/basename.h"
#include "pbd/debug.h"
#include "pbd/enumwriter.h"
#include "pbd/error.h"
#include "pbd/file_utils.h"
#include "pbd/pathexpand.h"
#include "pbd/pthread_utils.h"
#include "pbd/progress.h"
#include "pbd/scoped_file_descriptor.h"
#include "pbd/types_convert.h"
#include "pbd/localtime_r.h"
#include "pbd/unwind.h"
#include "ardour/amp.h"
#include "ardour/async_midi_port.h"
#include "ardour/audio_track.h"
#include "ardour/audioengine.h"
#include "ardour/audiofilesource.h"
#include "ardour/audioregion.h"
#include "ardour/auditioner.h"
#include "ardour/automation_control.h"
#include "ardour/boost_debug.h"
#include "ardour/butler.h"
#include "ardour/control_protocol_manager.h"
#include "ardour/debug.h"
#include "ardour/directory_names.h"
#include "ardour/disk_reader.h"
#include "ardour/filename_extensions.h"
#include "ardour/graph.h"
#include "ardour/io_plug.h"
#include "ardour/location.h"
#include "ardour/lv2_plugin.h"
#include "ardour/midi_model.h"
#include "ardour/midi_region.h"
#include "ardour/midi_scene_changer.h"
#include "ardour/midi_source.h"
#include "ardour/midi_track.h"
#include "ardour/mixer_scene.h"
#include "ardour/playlist_factory.h"
#include "ardour/playlist_source.h"
#include "ardour/port.h"
#include "ardour/processor.h"
#include "ardour/profile.h"
#include "ardour/proxy_controllable.h"
#include "ardour/recent_sessions.h"
#include "ardour/region_factory.h"
#include "ardour/revision.h"
#include "ardour/route_group.h"
#include "ardour/send.h"
#include "ardour/selection.h"
#include "ardour/session.h"
#include "ardour/session_directory.h"
#include "ardour/session_metadata.h"
#include "ardour/session_playlists.h"
#include "ardour/session_state_utils.h"
#include "ardour/silentfilesource.h"
#include "ardour/smf_source.h"
#include "ardour/sndfilesource.h"
#include "ardour/source_factory.h"
#include "ardour/speakers.h"
#include "ardour/template_utils.h"
#include "ardour/tempo.h"
#include "ardour/ticker.h"
#include "ardour/transport_master_manager.h"
#include "ardour/types_convert.h"
#include "ardour/user_bundle.h"
#include "ardour/vca.h"
#include "ardour/vca_manager.h"
#include "ardour/wrong_program.h"
#include "control_protocol/control_protocol.h"
#include "LuaBridge/LuaBridge.h"
#include "pbd/i18n.h"
#include <locale.h>
using namespace std;
using namespace ARDOUR;
using namespace PBD;
using namespace Temporal;
void
Session::pre_engine_init (string fullpath)
{
if (fullpath.empty()) {
destroy ();
throw failed_constructor();
}
/* discover canonical fullpath */
_path = canonical_path(fullpath);
/* is it new ? */
_is_new = !Glib::file_test (_path, Glib::FileTest (G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR));
/* finish initialization that can't be done in a normal C++ constructor
definition.
*/
timerclear (&last_mmc_step);
_processing_prohibited.store (0);
_record_status.store (Disabled);
_playback_load.store (100);
_capture_load.store (100);
set_next_event ();
_all_route_group->set_active (true, this);
if (config.get_use_video_sync()) {
waiting_for_sync_offset = true;
} else {
waiting_for_sync_offset = false;
}
last_rr_session_dir = session_dirs.begin();
set_history_depth (Config->get_history_depth());
/* default: assume simple stereo speaker configuration */
_speakers->setup_default_speakers (2);
_solo_cut_control.reset (new ProxyControllable (_("solo cut control (dB)"), PBD::Controllable::GainLike,
boost::bind (&RCConfiguration::set_solo_mute_gain, Config, _1),
boost::bind (&RCConfiguration::get_solo_mute_gain, Config)));
add_controllable (_solo_cut_control);
/* These are all static "per-class" signals */
SourceFactory::SourceCreated.connect_same_thread (*this, boost::bind (&Session::add_source, this, _1));
PlaylistFactory::PlaylistCreated.connect_same_thread (*this, boost::bind (&Session::add_playlist, this, _1));
AutomationList::AutomationListCreated.connect_same_thread (*this, boost::bind (&Session::add_automation_list, this, _1));
IO::PortCountChanged.connect_same_thread (*this, boost::bind (&Session::ensure_buffers, this, _1));
/* stop IO objects from doing stuff until we're ready for them */
Delivery::disable_panners ();
}
int
Session::post_engine_init ()
{
BootMessage (_("Set block size and sample rate"));
set_block_size (_engine.samples_per_cycle());
set_sample_rate (_engine.sample_rate());
BootMessage (_("Using configuration"));
_midi_ports = new MidiPortManager;
MIDISceneChanger* msc;
_scene_changer = msc = new MIDISceneChanger (*this);
msc->set_input_port (std::dynamic_pointer_cast<MidiPort>(scene_input_port()));
msc->set_output_port (std::dynamic_pointer_cast<MidiPort>(scene_output_port()));
boost::function<samplecnt_t(void)> timer_func (boost::bind (&Session::audible_sample, this, (bool*)(0)));
std::dynamic_pointer_cast<AsyncMIDIPort>(scene_input_port())->set_timer (timer_func);
setup_midi_machine_control ();
/* setup MTC generator */
mtc_tx_resync_latency (true);
LatencyUpdated.connect_same_thread (*this, boost::bind (&Session::mtc_tx_resync_latency, this, _1));
if (_butler->start_thread()) {
error << _("Butler did not start") << endmsg;
return -1;
}
if (start_midi_thread ()) {
error << _("MIDI I/O thread did not start") << endmsg;
return -1;
}
setup_click_sounds (0);
setup_midi_control ();
_engine.Halted.connect_same_thread (*this, boost::bind (&Session::engine_halted, this));
_engine.Xrun.connect_same_thread (*this, boost::bind (&Session::xrun_recovery, this));
try {
/* MidiClock requires a tempo map */
delete midi_clock;
midi_clock = new MidiClockTicker (*this);
/* crossfades require sample rate knowledge */
_engine.GraphReordered.connect_same_thread (*this, boost::bind (&Session::graph_reordered, this, true));
_engine.MidiSelectionPortsChanged.connect_same_thread (*this, boost::bind (&Session::rewire_midi_selection_ports, this));
refresh_disk_space ();
/* we're finally ready to call set_state() ... all objects have
* been created, the engine is running.
*/
if (state_tree) {
try {
switch (set_state (*state_tree->root(), Stateful::loading_state_version)) {
case 0:
/* OK */
break;
case -2:
/* SR mismatch */
return -6;
default:
error << _("Could not set session state from XML") << endmsg;
return -4;
}
} catch (PBD::unknown_enumeration& e) {
error << _("Session state: ") << e.what() << endmsg;
return -4;
}
} else {
// set_state() will call setup_raid_path(), but if it's a new session we need
// to call setup_raid_path() here.
setup_raid_path (_path);
}
/* ENGINE */
boost::function<void (std::string)> ff (boost::bind (&Session::config_changed, this, _1, false));
boost::function<void (std::string)> ft (boost::bind (&Session::config_changed, this, _1, true));
Config->map_parameters (ff);
config.map_parameters (ft);
_butler->map_parameters ();
/* Configure all processors; now that the
* engine is running, ports are re-established,
* and IOChange are complete.
*/
{
Glib::Threads::Mutex::Lock lx (AudioEngine::instance()->process_lock ());
ProcessorChangeBlocker pcb (this);
std::shared_ptr<RouteList const> r = routes.reader ();
for (auto const& i : *r) {
i->configure_processors (0);
}
/* release process-lock, ProcessorChangeBlocker may trigger
* latency-callback from non-rt thread which may take the lock */
lx.release ();
}
/* Reset all panners */
Delivery::reset_panners ();
/* this will cause the CPM to instantiate any protocols that are in use
* (or mandatory), which will pass it this Session, and then call
* set_state() on each instantiated protocol to match stored state.
*/
ControlProtocolManager::instance().set_session (this);
/* This must be done after the ControlProtocolManager set_session above,
as it will set states for ports which the ControlProtocolManager creates.
*/
// XXX set state of MIDI::Port's
// MidiPortManager::instance()->set_port_states (Config->midi_port_states ());
/* And this must be done after the MIDI::Manager::set_port_states as
* it will try to make connections whose details are loaded by set_port_states.
*/
hookup_io ();
/* Let control protocols know that we are now all connected, so they
* could start talking to surfaces if they want to.
*/
ControlProtocolManager::instance().midi_connectivity_established (true);
if (_is_new && !no_auto_connect()) {
Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock());
auto_connect_master_bus ();
}
_state_of_the_state = StateOfTheState (_state_of_the_state & ~(CannotSave | Dirty));
/* update latencies */
initialize_latencies ();
_locations->added.connect_same_thread (*this, boost::bind (&Session::location_added, this, _1));
_locations->removed.connect_same_thread (*this, boost::bind (&Session::location_removed, this, _1));
_locations->changed.connect_same_thread (*this, boost::bind (&Session::locations_changed, this));
if (synced_to_engine()) {
_engine.transport_stop ();
}
// send_full_time_code (0);
} catch (AudioEngine::PortRegistrationFailure& err) {
error << err.what() << endmsg;
return -5;
} catch (ProcessorException const & e) {
error << e.what() << endmsg;
return -8;
} catch (WrongProgram const & wp) {
error << wp.what() << endmsg;
return -9;
} catch (std::exception const & e) {
error << _("Unexpected exception during session setup: ") << e.what() << endmsg;
return -6;
} catch (...) {
error << _("Unknown exception during session setup") << endmsg;
return -7;
}
BootMessage (_("Reset Remote Controls"));
send_immediate_mmc (MIDI::MachineControlCommand (MIDI::MachineControl::cmdMmcReset));
send_immediate_mmc (MIDI::MachineControlCommand (Timecode::Time ()));
ltc_tx_initialize();
Port::set_connecting_blocked (false);
/* Can't do this until the trigger input MIDI port is set up */
TriggerBox::static_init (*this);
/* Now, finally, we can [ask the butler to] fill the playback buffers */
BootMessage (_("Filling playback buffers"));
request_locate (transport_sample(), true);
reset_xrun_count ();
return 0;
}
void
Session::session_loaded ()
{
set_clean ();
SessionLoaded();
if (_is_new) {
save_state ("");
}
/* Now, finally, we can fill the playback buffers */
BootMessage (_("Filling playback buffers"));
force_locate (_transport_sample, MustStop);
reset_xrun_count ();
}
string
Session::raid_path () const
{
Searchpath raid_search_path;
for (vector<space_and_path>::const_iterator i = session_dirs.begin(); i != session_dirs.end(); ++i) {
raid_search_path += (*i).path;
}
return raid_search_path.to_string ();
}
void
Session::setup_raid_path (string path)
{
if (path.empty()) {
return;
}
space_and_path sp;
string fspath;
session_dirs.clear ();
Searchpath search_path(path);
Searchpath sound_search_path;
Searchpath midi_search_path;
for (Searchpath::const_iterator i = search_path.begin(); i != search_path.end(); ++i) {
sp.path = *i;
sp.blocks = 0; // not needed
session_dirs.push_back (sp);
SessionDirectory sdir(sp.path);
sound_search_path += sdir.sound_path ();
midi_search_path += sdir.midi_path ();
}
// reset the round-robin soundfile path thingie
last_rr_session_dir = session_dirs.begin();
}
bool
Session::path_is_within_session (const std::string& path)
{
for (vector<space_and_path>::const_iterator i = session_dirs.begin(); i != session_dirs.end(); ++i) {
if (PBD::path_is_within (i->path, path)) {
return true;
}
}
return false;
}
int
Session::ensure_subdirs ()
{
string dir;
dir = session_directory().peak_path();
if (g_mkdir_with_parents (dir.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session peakfile folder \"%1\" (%2)"), dir, strerror (errno)) << endmsg;
return -1;
}
dir = session_directory().sound_path();
if (g_mkdir_with_parents (dir.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session sounds dir \"%1\" (%2)"), dir, strerror (errno)) << endmsg;
return -1;
}
dir = session_directory().midi_path();
if (g_mkdir_with_parents (dir.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session midi dir \"%1\" (%2)"), dir, strerror (errno)) << endmsg;
return -1;
}
dir = session_directory().dead_path();
if (g_mkdir_with_parents (dir.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session dead sounds folder \"%1\" (%2)"), dir, strerror (errno)) << endmsg;
return -1;
}
dir = session_directory().export_path();
if (g_mkdir_with_parents (dir.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session export folder \"%1\" (%2)"), dir, strerror (errno)) << endmsg;
return -1;
}
if(Profile->get_mixbus()) {
dir = session_directory().backup_path();
if (g_mkdir_with_parents (dir.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session backup folder \"%1\" (%2)"), dir, strerror (errno)) << endmsg;
return -1;
}
}
dir = analysis_dir ();
if (g_mkdir_with_parents (dir.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session analysis folder \"%1\" (%2)"), dir, strerror (errno)) << endmsg;
return -1;
}
dir = plugins_dir ();
if (g_mkdir_with_parents (dir.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session plugins folder \"%1\" (%2)"), dir, strerror (errno)) << endmsg;
return -1;
}
dir = externals_dir ();
if (g_mkdir_with_parents (dir.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session externals folder \"%1\" (%2)"), dir, strerror (errno)) << endmsg;
return -1;
}
return 0;
}
/** @param session_template directory containing session template, or empty.
* Caller must not hold process lock.
*/
int
Session::create (const string& session_template, BusProfile const * bus_profile, bool unnamed)
{
if (g_mkdir_with_parents (_path.c_str(), 0755) < 0) {
error << string_compose(_("Session: cannot create session folder \"%1\" (%2)"), _path, strerror (errno)) << endmsg;
return -1;
}
if (unnamed) {
PBD::ScopedFileDescriptor fd = g_open (unnamed_file_name().c_str(), O_CREAT|O_TRUNC|O_RDWR, 0666);
}
if (ensure_subdirs ()) {
return -1;
}
_writable = exists_and_writable (_path);
if (!session_template.empty()) {
string in_path = session_template_dir_to_file (session_template);
FILE* in = g_fopen (in_path.c_str(), "rb");
if (in) {
/* no need to call legalize_for_path() since the string
* in session_template is already a legal path name
*/
string out_path = Glib::build_filename (_session_dir->root_path(), _name + statefile_suffix);
FILE* out = g_fopen (out_path.c_str(), "wb");
if (out) {
char buf[1024];
stringstream new_session;
while (!feof (in)) {
size_t charsRead = fread (buf, sizeof(char), 1024, in);
if (ferror (in)) {
error << string_compose (_("Error reading session template file %1 (%2)"), in_path, strerror (errno)) << endmsg;
fclose (in);
fclose (out);
return -1;
}
if (charsRead == 0) {
break;
}
new_session.write (buf, charsRead);
}
fclose (in);
string file_contents = new_session.str();
size_t writeSize = file_contents.length();
if (fwrite (file_contents.c_str(), sizeof(char), writeSize, out) != writeSize) {
error << string_compose (_("Error writing session template file %1 (%2)"), out_path, strerror (errno)) << endmsg;
fclose (out);
return -1;
}
fclose (out);
_is_new = false;
/* Copy plugin state files from template to new session */
std::string template_plugins = Glib::build_filename (session_template, X_("plugins"));
copy_recurse (template_plugins, plugins_dir ());
return 0;
} else {
error << string_compose (_("Could not open %1 for writing session template"), out_path)
<< endmsg;
fclose(in);
return -1;
}
} else {
error << string_compose (_("Could not open session template %1 for reading"), in_path)
<< endmsg;
return -1;
}
}
/* set up Master Out and Monitor Out if necessary */
if (bus_profile) {
RouteList rl;
ChanCount count(DataType::AUDIO, bus_profile->master_out_channels);
if (bus_profile->master_out_channels) {
int rv = add_master_bus (count);
if (rv) {
return rv;
}
if (Config->get_use_monitor_bus()) {
add_monitor_section ();
}
}
}
set_clean ();
reset_xrun_count ();
return 0;
}
void
Session::maybe_write_autosave()
{
if (dirty() && record_status() != Recording) {
save_state("", true);
}
}
void
Session::remove_pending_capture_state ()
{
std::string pending_state_file_path(_session_dir->root_path());
pending_state_file_path = Glib::build_filename (pending_state_file_path, legalize_for_path (_current_snapshot_name) + pending_suffix);
if (!Glib::file_test (pending_state_file_path, Glib::FILE_TEST_EXISTS)) {
return;
}
if (::g_unlink (pending_state_file_path.c_str()) != 0) {
error << string_compose(_("Could not remove pending capture state at path \"%1\" (%2)"),
pending_state_file_path, g_strerror (errno)) << endmsg;
}
#ifndef NDEBUG
else {
cerr << "removed " << pending_state_file_path << endl;
}
#endif
}
/** Rename a state file.
* @param old_name Old snapshot name.
* @param new_name New snapshot name.
*/
void
Session::rename_state (string old_name, string new_name)
{
if (old_name == _current_snapshot_name || old_name == _name) {
/* refuse to rename the current snapshot or the "main" one */
return;
}
const string old_xml_filename = legalize_for_path (old_name) + statefile_suffix;
const string new_xml_filename = legalize_for_path (new_name) + statefile_suffix;
const std::string old_xml_path(Glib::build_filename (_session_dir->root_path(), old_xml_filename));
const std::string new_xml_path(Glib::build_filename (_session_dir->root_path(), new_xml_filename));
if (::g_rename (old_xml_path.c_str(), new_xml_path.c_str()) != 0) {
error << string_compose(_("could not rename snapshot %1 to %2 (%3)"),
old_name, new_name, g_strerror(errno)) << endmsg;
}
}
/** Remove a state file.
* @param snapshot_name Snapshot name.
*/
void
Session::remove_state (string snapshot_name)
{
if (!_writable || snapshot_name == _current_snapshot_name || snapshot_name == _name) {
// refuse to remove the current snapshot or the "main" one
return;
}
std::string xml_path(_session_dir->root_path());
xml_path = Glib::build_filename (xml_path, legalize_for_path (snapshot_name) + statefile_suffix);
if (!create_backup_file (xml_path)) {
// don't remove it if a backup can't be made
// create_backup_file will log the error.
return;
}
// and delete it
if (g_remove (xml_path.c_str()) != 0) {
error << string_compose(_("Could not remove session file at path \"%1\" (%2)"),
xml_path, g_strerror (errno)) << endmsg;
}
StateSaved (snapshot_name); /* EMIT SIGNAL */
}
/** @param snapshot_name Name to save under, without .ardour / .pending prefix */
int
Session::save_state (string snapshot_name, bool pending, bool switch_to_snapshot, bool template_only, bool for_archive, bool only_used_assets)
{
DEBUG_TRACE (DEBUG::Locale, string_compose ("Session::save_state locale '%1'\n", setlocale (LC_NUMERIC, NULL)));
/* only_used_assets is only possible when archiving */
assert (!only_used_assets || for_archive);
/* template and archive are exclusive */
assert (!template_only || !for_archive);
/* switch_to_snapshot needs a new name and can't be pending */
assert (!switch_to_snapshot || (!snapshot_name.empty () && snapshot_name != _current_snapshot_name && !pending && !template_only && !for_archive));
/* pending saves are for current snapshot only */
assert (!pending || ((snapshot_name.empty () || snapshot_name == _current_snapshot_name) && !template_only && !for_archive));
XMLTree tree;
std::string xml_path(_session_dir->root_path());
/* prevent concurrent saves from different threads */
Glib::Threads::Mutex::Lock lm (save_state_lock);
Glib::Threads::Mutex::Lock lx (save_source_lock, Glib::Threads::NOT_LOCK);
if (!for_archive) {
lx.acquire ();
}
if (!_writable || cannot_save()) {
return 1;
}
if (_suspend_save.load ()) {
/* StateProtector cannot be used for templates or save-as */
assert (!template_only && !switch_to_snapshot && !for_archive && (snapshot_name.empty () || snapshot_name == _current_snapshot_name));
if (pending) {
_save_queued_pending = true;
} else {
_save_queued = true;
}
return 1;
}
if (pending) {
_save_queued_pending = false;
} else {
_save_queued = false;
}
snapshot_t fork_state = NormalSave;
if (!snapshot_name.empty() && snapshot_name != _current_snapshot_name && !template_only && !pending && !for_archive) {
/* snapshot, close midi */
fork_state = switch_to_snapshot ? SwitchToSnapshot : SnapshotKeep;
}
#ifndef NDEBUG
const int64_t save_start_time = g_get_monotonic_time();
#endif
/* tell sources we're saving first, in case they write out to a new file
* which should be saved with the state rather than the old one */
for (SourceMap::const_iterator i = sources.begin(); i != sources.end(); ++i) {
try {
i->second->session_saved();
} catch (Evoral::SMF::FileError& e) {
error << string_compose ("Could not write to MIDI file %1; MIDI data not saved.", e.file_name ()) << endmsg;
}
}
PBD::Unwinder<bool> uw (LV2Plugin::force_state_save, for_archive);
SessionSaveUnderway (); /* EMIT SIGNAL */
bool mark_as_clean = true;
if (!snapshot_name.empty() && !switch_to_snapshot) {
mark_as_clean = false;
}
if (template_only) {
mark_as_clean = false;
tree.set_root (&get_template());
} else {
tree.set_root (&state (false, fork_state, for_archive, only_used_assets));
}
if (snapshot_name.empty()) {
snapshot_name = _current_snapshot_name;
} else if (switch_to_snapshot) {
set_snapshot_name (snapshot_name);
}
assert (!snapshot_name.empty());
if (!pending) {
/* proper save: use statefile_suffix (.ardour in English) */
xml_path = Glib::build_filename (xml_path, legalize_for_path (snapshot_name) + statefile_suffix);
/* make a backup copy of the old file */
if (Glib::file_test (xml_path, Glib::FILE_TEST_EXISTS) && !create_backup_file (xml_path)) {
// create_backup_file will log the error
return -1;
}
} else {
assert (snapshot_name == _current_snapshot_name);
/* pending save: use pending_suffix (.pending in English) */
xml_path = Glib::build_filename (xml_path, legalize_for_path (snapshot_name) + pending_suffix);
}
std::string tmp_path(_session_dir->root_path());
tmp_path = Glib::build_filename (tmp_path, legalize_for_path (snapshot_name) + temp_suffix);
DEBUG_TRACE (DEBUG::SaveState, string_compose ("writing state to '%1'\n", tmp_path));
if (!tree.write (tmp_path)) {
error << string_compose (_("state could not be saved to %1"), tmp_path) << endmsg;
if (g_remove (tmp_path.c_str()) != 0) {
error << string_compose(_("Could not remove temporary session file at path \"%1\" (%2)"),
tmp_path, g_strerror (errno)) << endmsg;
}
return -1;
} else {
DEBUG_TRACE (DEBUG::SaveState, string_compose ("renaming state to '%1'\n", xml_path));
if (::g_rename (tmp_path.c_str(), xml_path.c_str()) != 0) {
error << string_compose (_("could not rename temporary session file %1 to %2 (%3)"),
tmp_path, xml_path, g_strerror(errno)) << endmsg;
if (g_remove (tmp_path.c_str()) != 0) {
error << string_compose(_("Could not remove temporary session file at path \"%1\" (%2)"),
tmp_path, g_strerror (errno)) << endmsg;
}
return -1;
}
}
//Mixbus auto-backup mechanism
if(Profile->get_mixbus()) {
if (pending) { //"pending" save means it's a backup, or some other non-user-initiated save; a good time to make a backup
// make a serialized safety backup
// (will make one periodically but only one per hour is left on disk)
// these backup files go into a separated folder
char timebuf[128];
time_t n;
struct tm local_time;
time (&n);
localtime_r (&n, &local_time);
strftime (timebuf, sizeof(timebuf), "%y-%m-%d.%H", &local_time);
std::string save_path(session_directory().backup_path());
save_path += G_DIR_SEPARATOR;
save_path += legalize_for_path(_current_snapshot_name);
save_path += "-";
save_path += timebuf;
save_path += statefile_suffix;
if (!copy_file (xml_path, save_path)) {
error << string_compose(_("Could not save backup file at path \"%1\" (%2)"),
save_path, g_strerror (errno)) << endmsg;
}
}
}
if (!pending && !for_archive) {
save_history (snapshot_name);
if (mark_as_clean) {
unset_dirty (/* EMIT SIGNAL */ true);
}
StateSaved (snapshot_name); /* EMIT SIGNAL */
}
#ifndef NDEBUG
if (DEBUG_ENABLED (DEBUG::SaveState)) {
const int64_t elapsed_time_us = g_get_monotonic_time() - save_start_time;
DEBUG_TRACE (DEBUG::SaveState, string_compose ("saved in %1%2%3 ms\n", fixed, setprecision (1), elapsed_time_us / 1000.));
}
#endif
if (!pending && !for_archive && ! template_only) {
remove_pending_capture_state ();
}
return 0;
}
int
Session::restore_state (string snapshot_name)
{
try {
if (load_state (snapshot_name) == 0) {
set_state (*state_tree->root(), Stateful::loading_state_version);
}
} catch (...) {
// SessionException
// unknown_enumeration
return -1;
}
return 0;
}
int
Session::load_state (string snapshot_name, bool from_template)
{
delete state_tree;
state_tree = 0;
bool state_was_pending = false;
/* check for leftover pending state from a crashed capture attempt */
std::string xmlpath(_session_dir->root_path());
xmlpath = Glib::build_filename (xmlpath, legalize_for_path (snapshot_name) + pending_suffix);
if (Glib::file_test (xmlpath, Glib::FILE_TEST_EXISTS)) {
/* there is pending state from a crashed capture attempt */
boost::optional<int> r = AskAboutPendingState();
if (r.value_or (1)) {
state_was_pending = true;
} else {
remove_pending_capture_state ();
}
}
if (!state_was_pending) {
xmlpath = Glib::build_filename (_session_dir->root_path(), snapshot_name);
}
if (!Glib::file_test (xmlpath, Glib::FILE_TEST_EXISTS)) {
xmlpath = Glib::build_filename (_session_dir->root_path(), legalize_for_path (snapshot_name) + statefile_suffix);
if (!Glib::file_test (xmlpath, Glib::FILE_TEST_EXISTS)) {
error << string_compose(_("%1: session file \"%2\" doesn't exist!"), _name, xmlpath) << endmsg;
return 1;
}
}
state_tree = new XMLTree;
set_dirty();