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 "ardour/audioengine.h"
25 #include "ardour/butler.h"
26 #include "ardour/export_failed.h"
27 #include "ardour/export_handler.h"
28 #include "ardour/export_status.h"
29 #include "ardour/session.h"
30 #include "ardour/track.h"
31 #include "ardour/process_thread.h"
36 using namespace ARDOUR;
39 boost::shared_ptr<ExportHandler>
40 Session::get_export_handler ()
42 if (!export_handler) {
43 export_handler.reset (new ExportHandler (*this));
46 return export_handler;
49 boost::shared_ptr<ExportStatus>
50 Session::get_export_status ()
53 export_status.reset (new ExportStatus ());
61 Session::pre_export ()
63 get_export_status (); // Init export_status
65 _butler->wait_until_finished ();
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));
99 Session::start_audio_export (framepos_t position, bool /* realtime */)
105 /* get everyone to the right position */
108 boost::shared_ptr<RouteList> rl = routes.reader();
110 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
111 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
112 if (tr && tr->seek (position, true)) {
113 error << string_compose (_("%1: cannot seek to %2 for export"),
114 (*i)->name(), position)
121 /* we just did the core part of a locate() call above, but
122 for the sake of any GUI, put the _transport_frame in
126 _transport_frame = position;
127 export_status->stop = false;
129 /* get transport ready. note how this is calling butler functions
130 from a non-butler thread. we waited for the butler to stop
131 what it was doing earlier in Session::pre_export() and nothing
132 since then has re-awakened it.
135 set_transport_speed (1.0, false);
136 butler_transport_work ();
137 g_atomic_int_set (&_butler->should_do_transport_work, 0);
140 /* we are ready to go ... */
142 if (!_engine.connected()) {
146 _engine.Freewheel.connect_same_thread (export_freewheel_connection, boost::bind (&Session::process_export_fw, this, _1));
147 _export_rolling = true;
148 return _engine.freewheel (true);
152 Session::process_export (pframes_t nframes)
154 if (_export_rolling && export_status->stop) {
155 stop_audio_export ();
158 if (_export_rolling) {
159 /* make sure we've caught up with disk i/o, since
160 we're running faster than realtime c/o JACK.
162 _butler->wait_until_finished ();
164 /* do the usual stuff */
166 process_without_events (nframes);
170 /* handle export - XXX what about error handling? */
172 ProcessExport (nframes);
174 } catch (std::exception & e) {
175 std::cout << e.what() << std::endl;
176 export_status->abort (true);
181 Session::process_export_fw (pframes_t nframes)
183 _engine.main_thread()->get_buffers ();
184 process_export (nframes);
185 _engine.main_thread()->drop_buffers ();
190 Session::stop_audio_export ()
192 /* can't use stop_transport() here because we need
193 an immediate halt and don't require all the declick
194 stuff that stop_transport() implements.
197 realtime_stop (true, true);
198 _export_rolling = false;
199 _butler->schedule_transport_work ();
201 if (export_status->aborted()) {
202 finalize_audio_export ();
210 Session::finalize_audio_export ()
213 _export_rolling = false;
217 _engine.freewheel (false);
218 export_freewheel_connection.disconnect();
219 export_handler.reset();
220 export_status.reset();
222 /* restart slaving */
224 if (post_export_sync) {
225 config.set_external_sync (true);
227 locate (post_export_position, false, false, false, false, false);