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 /* take everyone out of awrite to avoid disasters */
68 boost::shared_ptr<RouteList> r = routes.reader ();
70 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
71 (*i)->protect_automation ();
75 /* make sure we are actually rolling */
77 if (get_record_enabled()) {
78 disable_record (false);
83 post_export_sync = config.get_external_sync ();
84 post_export_position = _transport_frame;
86 config.set_external_sync (false);
89 export_status->running = true;
90 export_status->Aborting.connect_same_thread (*this, boost::bind (&Session::stop_audio_export, this));
91 export_status->Finished.connect_same_thread (*this, boost::bind (&Session::finalize_audio_export, this));
96 /** Called for each range that is being exported */
98 Session::start_audio_export (framepos_t position, bool /* realtime */)
104 /* We're about to call Track::seek, so the butler must have finished everything
105 up otherwise it could be doing do_refill in its thread while we are doing
109 _butler->wait_until_finished ();
111 /* get everyone to the right position */
114 boost::shared_ptr<RouteList> rl = routes.reader();
116 for (RouteList::iterator i = rl->begin(); i != rl->end(); ++i) {
117 boost::shared_ptr<Track> tr = boost::dynamic_pointer_cast<Track> (*i);
118 if (tr && tr->seek (position, true)) {
119 error << string_compose (_("%1: cannot seek to %2 for export"),
120 (*i)->name(), position)
127 /* we just did the core part of a locate() call above, but
128 for the sake of any GUI, put the _transport_frame in
132 _transport_frame = position;
133 export_status->stop = false;
135 /* get transport ready. note how this is calling butler functions
136 from a non-butler thread. we waited for the butler to stop
137 what it was doing earlier in Session::pre_export() and nothing
138 since then has re-awakened it.
141 set_transport_speed (1.0, false);
142 butler_transport_work ();
143 g_atomic_int_set (&_butler->should_do_transport_work, 0);
146 /* we are ready to go ... */
148 if (!_engine.connected()) {
152 _engine.Freewheel.connect_same_thread (export_freewheel_connection, boost::bind (&Session::process_export_fw, this, _1));
153 _export_rolling = true;
154 return _engine.freewheel (true);
158 Session::process_export (pframes_t nframes)
160 if (_export_rolling && export_status->stop) {
161 stop_audio_export ();
164 if (_export_rolling) {
165 /* make sure we've caught up with disk i/o, since
166 we're running faster than realtime c/o JACK.
168 _butler->wait_until_finished ();
170 /* do the usual stuff */
172 process_without_events (nframes);
176 /* handle export - XXX what about error handling? */
178 ProcessExport (nframes);
180 } catch (std::exception & e) {
181 error << string_compose (_("Export ended unexpectedly: %1"), e.what()) << endmsg;
182 export_status->abort (true);
187 Session::process_export_fw (pframes_t nframes)
189 _engine.main_thread()->get_buffers ();
190 process_export (nframes);
191 _engine.main_thread()->drop_buffers ();
196 Session::stop_audio_export ()
198 /* can't use stop_transport() here because we need
199 an immediate halt and don't require all the declick
200 stuff that stop_transport() implements.
203 realtime_stop (true, true);
204 _export_rolling = false;
205 _butler->schedule_transport_work ();
207 if (export_status->aborted()) {
208 finalize_audio_export ();
216 Session::finalize_audio_export ()
219 _export_rolling = false;
223 _engine.freewheel (false);
224 export_freewheel_connection.disconnect();
226 /* maybe write CUE/TOC */
228 export_handler.reset();
229 export_status.reset();
231 /* restart slaving */
233 if (post_export_sync) {
234 config.set_external_sync (true);
236 locate (post_export_position, false, false, false, false, false);