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_handler.h"
30 #include "ardour/export_status.h"
31 #include "ardour/process_thread.h"
32 #include "ardour/session.h"
33 #include "ardour/track.h"
38 using namespace ARDOUR;
41 boost::shared_ptr<ExportHandler>
42 Session::get_export_handler ()
44 if (!export_handler) {
45 export_handler.reset (new ExportHandler (*this));
48 return export_handler;
51 boost::shared_ptr<ExportStatus>
52 Session::get_export_status ()
55 export_status.reset (new ExportStatus ());
63 Session::pre_export ()
65 get_export_status (); // Init export_status
67 /* take everyone out of awrite to avoid disasters */
70 boost::shared_ptr<RouteList> r = routes.reader ();
72 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
73 (*i)->protect_automation ();
77 /* make sure we are actually rolling */
79 if (get_record_enabled()) {
80 disable_record (false);
85 post_export_sync = config.get_external_sync ();
86 post_export_position = _transport_frame;
88 config.set_external_sync (false);
91 export_status->running = true;
92 export_status->Aborting.connect_same_thread (*this, boost::bind (&Session::stop_audio_export, this));
93 export_status->Finished.connect_same_thread (*this, boost::bind (&Session::finalize_audio_export, this));
95 /* disable MMC output early */
97 _pre_export_mmc_enabled = MIDI::Manager::instance()->mmc()->send_enabled ();
98 MIDI::Manager::instance()->mmc()->enable_send (false);
103 /** Called for each range that is being exported */
105 Session::start_audio_export (framepos_t position, bool /* realtime */)
111 /* We're about to call Track::seek, so the butler must have finished everything
112 up otherwise it could be doing do_refill in its thread while we are doing
116 _butler->wait_until_finished ();
118 /* get everyone to the right position */
121 boost::shared_ptr<RouteList> rl = routes.reader();
123 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
124 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
125 if (tr && tr->seek (position, true)) {
126 error << string_compose (_("%1: cannot seek to %2 for export"),
127 (*i)->name(), position)
134 /* we just did the core part of a locate() call above, but
135 for the sake of any GUI, put the _transport_frame in
139 _transport_frame = position;
140 export_status->stop = false;
142 /* get transport ready. note how this is calling butler functions
143 from a non-butler thread. we waited for the butler to stop
144 what it was doing earlier in Session::pre_export() and nothing
145 since then has re-awakened it.
148 set_transport_speed (1.0, false);
149 butler_transport_work ();
150 g_atomic_int_set (&_butler->should_do_transport_work, 0);
153 /* we are ready to go ... */
155 if (!_engine.connected()) {
159 _engine.Freewheel.connect_same_thread (export_freewheel_connection, boost::bind (&Session::process_export_fw, this, _1));
160 _export_rolling = true;
161 return _engine.freewheel (true);
165 Session::process_export (pframes_t nframes)
167 if (_export_rolling && export_status->stop) {
168 stop_audio_export ();
171 if (_export_rolling) {
172 /* make sure we've caught up with disk i/o, since
173 we're running faster than realtime c/o JACK.
175 _butler->wait_until_finished ();
177 /* do the usual stuff */
179 process_without_events (nframes);
183 /* handle export - XXX what about error handling? */
185 ProcessExport (nframes);
187 } catch (std::exception & e) {
188 error << string_compose (_("Export ended unexpectedly: %1"), e.what()) << endmsg;
189 export_status->abort (true);
194 Session::process_export_fw (pframes_t nframes)
196 _engine.main_thread()->get_buffers ();
197 process_export (nframes);
198 _engine.main_thread()->drop_buffers ();
203 Session::stop_audio_export ()
205 /* can't use stop_transport() here because we need
206 an immediate halt and don't require all the declick
207 stuff that stop_transport() implements.
210 realtime_stop (true, true);
211 _export_rolling = false;
212 _butler->schedule_transport_work ();
214 if (export_status->aborted()) {
215 finalize_audio_export ();
223 Session::finalize_audio_export ()
226 _export_rolling = false;
230 _engine.freewheel (false);
231 export_freewheel_connection.disconnect();
233 MIDI::Manager::instance()->mmc()->enable_send (_pre_export_mmc_enabled);
235 /* maybe write CUE/TOC */
237 export_handler.reset();
238 export_status.reset();
240 /* restart slaving */
242 if (post_export_sync) {
243 config.set_external_sync (true);
245 locate (post_export_position, false, false, false, false, false);