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.
20 #include <sigc++/bind.h>
22 #include <pbd/error.h>
23 #include <glibmm/thread.h>
25 #include <ardour/export_failed.h>
26 #include <ardour/export_file_io.h>
27 #include <ardour/export_utilities.h>
28 #include <ardour/export_handler.h>
29 #include <ardour/export_status.h>
30 #include <ardour/timestamps.h>
31 #include <ardour/ardour.h>
32 #include <ardour/session.h>
33 #include <ardour/audioengine.h>
34 #include <ardour/audio_diskstream.h>
35 #include <ardour/panner.h>
40 using namespace ARDOUR;
43 boost::shared_ptr<ExportHandler>
44 Session::get_export_handler ()
46 if (!export_handler) {
47 export_handler.reset (new ExportHandler (*this));
50 return export_handler;
53 boost::shared_ptr<ExportStatus>
54 Session::get_export_status ()
57 export_status.reset (new ExportStatus ());
65 Session::pre_export ()
67 get_export_status (); // Init export_status
69 wait_till_butler_finished ();
71 /* take everyone out of awrite to avoid disasters */
74 boost::shared_ptr<RouteList> r = routes.reader ();
76 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
77 (*i)->protect_automation ();
81 /* make sure we are actually rolling */
83 if (get_record_enabled()) {
84 disable_record (false);
89 post_export_slave = Config->get_slave_source ();
90 post_export_position = _transport_frame;
92 Config->set_slave_source (None);
95 export_status->running = true;
96 export_status->Aborting.connect (sigc::hide_return (sigc::mem_fun (*this, &Session::stop_audio_export)));
97 export_status->Finished.connect (sigc::hide_return (sigc::mem_fun (*this, &Session::finalize_audio_export)));
103 Session::start_audio_export (nframes_t position, bool realtime)
109 /* get everyone to the right position */
112 boost::shared_ptr<DiskstreamList> dsl = diskstreams.reader();
114 for (DiskstreamList::iterator i = dsl->begin(); i != dsl->end(); ++i) {
115 if ((*i)-> seek (position, true)) {
116 error << string_compose (_("%1: cannot seek to %2 for export"),
117 (*i)->name(), position)
124 /* we just did the core part of a locate() call above, but
125 for the sake of any GUI, put the _transport_frame in
129 _transport_frame = position;
131 _exporting_realtime = realtime;
132 export_status->stop = false;
134 /* get transport ready. note how this is calling butler functions
135 from a non-butler thread. we waited for the butler to stop
136 what it was doing earlier in Session::pre_export() and nothing
137 since then has re-awakened it.
140 set_transport_speed (1.0, false);
141 butler_transport_work ();
142 g_atomic_int_set (&butler_should_do_transport_work, 0);
145 /* we are ready to go ... */
147 if (!_engine.connected()) {
152 last_process_function = process_function;
153 process_function = &Session::process_export;
155 export_freewheel_connection = _engine.Freewheel.connect (sigc::mem_fun (*this, &Session::process_export_fw));
156 return _engine.freewheel (true);
163 Session::process_export (nframes_t nframes)
167 if (export_status->stop) {
168 stop_audio_export ();
172 if (!_exporting_realtime) {
173 /* make sure we've caught up with disk i/o, since
174 we're running faster than realtime c/o JACK.
177 wait_till_butler_finished ();
180 /* do the usual stuff */
182 process_without_events (nframes);
186 ProcessExport (nframes);
188 } catch (ExportFailed e) {
189 export_status->abort (true);
194 Session::process_export_fw (nframes_t nframes)
196 process_export (nframes);
201 Session::stop_audio_export ()
203 if (_exporting_realtime) {
204 process_function = last_process_function;
206 export_freewheel_connection.disconnect();
209 /* can't use stop_transport() here because we need
210 an immediate halt and don't require all the declick
211 stuff that stop_transport() implements.
214 realtime_stop (true);
215 schedule_butler_transport_work ();
217 if (!export_status->aborted()) {
218 ExportReadFinished ();
220 finalize_audio_export ();
228 Session::finalize_audio_export ()
231 export_status->running = false;
233 if (!_exporting_realtime) {
234 _engine.freewheel (false);
235 _exporting_realtime = false;
240 ProcessExport.clear();
241 ExportReadFinished.clear();
242 export_freewheel_connection.disconnect();
243 export_handler.reset();
244 export_status.reset();
246 /* restart slaving */
248 if (post_export_slave != None) {
249 Config->set_slave_source (post_export_slave);
251 locate (post_export_position, false, false, false);