2 Copyright (C) 1999-2008 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "pbd/error.h"
22 #include <glibmm/thread.h>
24 #include <midi++/manager.h>
25 #include <midi++/mmc.h>
27 #include "ardour/audioengine.h"
28 #include "ardour/butler.h"
29 #include "ardour/export_failed.h"
30 #include "ardour/export_handler.h"
31 #include "ardour/export_status.h"
32 #include "ardour/session.h"
33 #include "ardour/track.h"
34 #include "ardour/process_thread.h"
39 using namespace ARDOUR;
42 boost::shared_ptr<ExportHandler>
43 Session::get_export_handler ()
45 if (!export_handler) {
46 export_handler.reset (new ExportHandler (*this));
49 return export_handler;
52 boost::shared_ptr<ExportStatus>
53 Session::get_export_status ()
56 export_status.reset (new ExportStatus ());
64 Session::pre_export ()
66 get_export_status (); // Init export_status
68 /* take everyone out of awrite to avoid disasters */
71 boost::shared_ptr<RouteList> r = routes.reader ();
73 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
74 (*i)->protect_automation ();
78 /* make sure we are actually rolling */
80 if (get_record_enabled()) {
81 disable_record (false);
86 post_export_sync = config.get_external_sync ();
87 post_export_position = _transport_frame;
89 config.set_external_sync (false);
92 export_status->running = true;
93 export_status->Aborting.connect_same_thread (*this, boost::bind (&Session::stop_audio_export, this));
94 export_status->Finished.connect_same_thread (*this, boost::bind (&Session::finalize_audio_export, this));
96 /* disable MMC output early */
98 _pre_export_mmc_enabled = MIDI::Manager::instance()->mmc()->send_enabled ();
99 MIDI::Manager::instance()->mmc()->enable_send (false);
104 /** Called for each range that is being exported */
106 Session::start_audio_export (framepos_t position, bool /* realtime */)
112 /* We're about to call Track::seek, so the butler must have finished everything
113 up otherwise it could be doing do_refill in its thread while we are doing
117 _butler->wait_until_finished ();
119 /* get everyone to the right position */
122 boost::shared_ptr<RouteList> rl = routes.reader();
124 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
125 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
126 if (tr && tr->seek (position, true)) {
127 error << string_compose (_("%1: cannot seek to %2 for export"),
128 (*i)->name(), position)
135 /* we just did the core part of a locate() call above, but
136 for the sake of any GUI, put the _transport_frame in
140 _transport_frame = position;
141 export_status->stop = false;
143 /* get transport ready. note how this is calling butler functions
144 from a non-butler thread. we waited for the butler to stop
145 what it was doing earlier in Session::pre_export() and nothing
146 since then has re-awakened it.
149 set_transport_speed (1.0, false);
150 butler_transport_work ();
151 g_atomic_int_set (&_butler->should_do_transport_work, 0);
154 /* we are ready to go ... */
156 if (!_engine.connected()) {
160 _engine.Freewheel.connect_same_thread (export_freewheel_connection, boost::bind (&Session::process_export_fw, this, _1));
161 _export_rolling = true;
162 return _engine.freewheel (true);
166 Session::process_export (pframes_t nframes)
168 if (_export_rolling && export_status->stop) {
169 stop_audio_export ();
172 if (_export_rolling) {
173 /* make sure we've caught up with disk i/o, since
174 we're running faster than realtime c/o JACK.
176 _butler->wait_until_finished ();
178 /* do the usual stuff */
180 process_without_events (nframes);
184 /* handle export - XXX what about error handling? */
186 ProcessExport (nframes);
188 } catch (std::exception & e) {
189 error << string_compose (_("Export ended unexpectedly: %1"), e.what()) << endmsg;
190 export_status->abort (true);
195 Session::process_export_fw (pframes_t nframes)
197 _engine.main_thread()->get_buffers ();
198 process_export (nframes);
199 _engine.main_thread()->drop_buffers ();
204 Session::stop_audio_export ()
206 /* can't use stop_transport() here because we need
207 an immediate halt and don't require all the declick
208 stuff that stop_transport() implements.
211 realtime_stop (true, true);
212 _export_rolling = false;
213 _butler->schedule_transport_work ();
215 if (export_status->aborted()) {
216 finalize_audio_export ();
224 Session::finalize_audio_export ()
227 _export_rolling = false;
231 _engine.freewheel (false);
232 export_freewheel_connection.disconnect();
234 MIDI::Manager::instance()->mmc()->enable_send (_pre_export_mmc_enabled);
236 /* maybe write CUE/TOC */
238 export_handler.reset();
239 export_status.reset();
241 /* restart slaving */
243 if (post_export_sync) {
244 config.set_external_sync (true);
246 locate (post_export_position, false, false, false, false, false);