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/threads.h>
24 #include <midi++/mmc.h>
26 #include "ardour/audioengine.h"
27 #include "ardour/butler.h"
28 #include "ardour/export_handler.h"
29 #include "ardour/export_status.h"
30 #include "ardour/process_thread.h"
31 #include "ardour/session.h"
32 #include "ardour/track.h"
37 using namespace ARDOUR;
40 boost::shared_ptr<ExportHandler>
41 Session::get_export_handler ()
43 if (!export_handler) {
44 export_handler.reset (new ExportHandler (*this));
47 return export_handler;
50 boost::shared_ptr<ExportStatus>
51 Session::get_export_status ()
54 export_status.reset (new ExportStatus ());
62 Session::pre_export ()
64 get_export_status (); // Init export_status
66 /* take everyone out of awrite to avoid disasters */
69 boost::shared_ptr<RouteList> r = routes.reader ();
71 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
72 (*i)->protect_automation ();
76 /* make sure we are actually rolling */
78 if (get_record_enabled()) {
79 disable_record (false);
84 post_export_sync = config.get_external_sync ();
85 post_export_position = _transport_frame;
87 config.set_external_sync (false);
90 export_status->running = true;
91 export_status->Finished.connect_same_thread (*this, boost::bind (&Session::finalize_audio_export, this));
93 /* disable MMC output early */
95 _pre_export_mmc_enabled = AudioEngine::instance()->mmc().send_enabled ();
96 AudioEngine::instance()->mmc().enable_send (false);
101 /** Called for each range that is being exported */
103 Session::start_audio_export (framepos_t position)
108 _export_started = false;
110 /* We're about to call Track::seek, so the butler must have finished everything
111 up otherwise it could be doing do_refill in its thread while we are doing
115 _butler->wait_until_finished ();
117 /* get everyone to the right position */
120 boost::shared_ptr<RouteList> rl = routes.reader();
122 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
123 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
124 if (tr && tr->seek (position, true)) {
125 error << string_compose (_("%1: cannot seek to %2 for export"),
126 (*i)->name(), position)
133 /* we just did the core part of a locate() call above, but
134 for the sake of any GUI, put the _transport_frame in
138 _transport_frame = position;
139 export_status->stop = false;
141 /* get transport ready. note how this is calling butler functions
142 from a non-butler thread. we waited for the butler to stop
143 what it was doing earlier in Session::pre_export() and nothing
144 since then has re-awakened it.
147 /* we are ready to go ... */
149 if (!_engine.connected()) {
153 _engine.Freewheel.connect_same_thread (export_freewheel_connection, boost::bind (&Session::process_export_fw, this, _1));
154 _export_rolling = true;
155 return _engine.freewheel (true);
159 Session::process_export (pframes_t nframes)
161 if (_export_rolling && export_status->stop) {
162 stop_audio_export ();
165 if (_export_rolling) {
166 /* make sure we've caught up with disk i/o, since
167 we're running faster than realtime c/o JACK.
169 _butler->wait_until_finished ();
171 /* do the usual stuff */
173 process_without_events (nframes);
177 /* handle export - XXX what about error handling? */
179 ProcessExport (nframes);
181 } catch (std::exception & e) {
182 error << string_compose (_("Export ended unexpectedly: %1"), e.what()) << endmsg;
183 export_status->abort (true);
191 Session::process_export_fw (pframes_t nframes)
193 if (!_export_started) {
194 _export_started = true;
195 set_transport_speed (1.0, false);
196 butler_transport_work ();
197 g_atomic_int_set (&_butler->should_do_transport_work, 0);
202 _engine.main_thread()->get_buffers ();
203 process_export (nframes);
204 _engine.main_thread()->drop_buffers ();
210 Session::stop_audio_export ()
212 /* can't use stop_transport() here because we need
213 an immediate halt and don't require all the declick
214 stuff that stop_transport() implements.
217 realtime_stop (true, true);
218 _export_rolling = false;
219 _butler->schedule_transport_work ();
225 Session::finalize_audio_export ()
229 if (_export_rolling) {
230 stop_audio_export ();
235 _engine.freewheel (false);
237 export_freewheel_connection.disconnect();
239 AudioEngine::instance()->mmc().enable_send (_pre_export_mmc_enabled);
241 /* maybe write CUE/TOC */
243 export_handler.reset();
244 export_status.reset();
246 /* restart slaving */
248 if (post_export_sync) {
249 config.set_external_sync (true);
251 locate (post_export_position, false, false, false, false, false);