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/ardour.h"
26 #include "ardour/audio_diskstream.h"
27 #include "ardour/audioengine.h"
28 #include "ardour/export_failed.h"
29 #include "ardour/export_file_io.h"
30 #include "ardour/export_handler.h"
31 #include "ardour/export_status.h"
32 #include "ardour/export_utilities.h"
33 #include "ardour/panner.h"
34 #include "ardour/route.h"
35 #include "ardour/session.h"
36 #include "ardour/timestamps.h"
41 using namespace ARDOUR;
44 boost::shared_ptr<ExportHandler>
45 Session::get_export_handler ()
47 if (!export_handler) {
48 export_handler.reset (new ExportHandler (*this));
51 return export_handler;
54 boost::shared_ptr<ExportStatus>
55 Session::get_export_status ()
58 export_status.reset (new ExportStatus ());
66 Session::pre_export ()
68 get_export_status (); // Init export_status
70 wait_till_butler_finished ();
72 /* take everyone out of awrite to avoid disasters */
75 boost::shared_ptr<RouteList> r = routes.reader ();
77 for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
78 (*i)->protect_automation ();
82 /* make sure we are actually rolling */
84 if (get_record_enabled()) {
85 disable_record (false);
90 post_export_slave = Config->get_slave_source ();
91 post_export_position = _transport_frame;
93 Config->set_slave_source (None);
96 export_status->running = true;
97 export_status->Aborting.connect (sigc::hide_return (sigc::mem_fun (*this, &Session::stop_audio_export)));
98 export_status->Finished.connect (sigc::hide_return (sigc::mem_fun (*this, &Session::finalize_audio_export)));
104 Session::start_audio_export (nframes_t position, bool realtime)
110 /* get everyone to the right position */
113 boost::shared_ptr<DiskstreamList> dsl = diskstreams.reader();
115 for (DiskstreamList::iterator i = dsl->begin(); i != dsl->end(); ++i) {
116 if ((*i)-> seek (position, true)) {
117 error << string_compose (_("%1: cannot seek to %2 for export"),
118 (*i)->name(), position)
125 /* we just did the core part of a locate() call above, but
126 for the sake of any GUI, put the _transport_frame in
130 _transport_frame = position;
132 _exporting_realtime = realtime;
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()) {
153 last_process_function = process_function;
154 process_function = &Session::process_export;
156 export_freewheel_connection = _engine.Freewheel.connect (sigc::mem_fun (*this, &Session::process_export_fw));
157 return _engine.freewheel (true);
164 Session::process_export (nframes_t nframes)
168 if (export_status->stop) {
169 stop_audio_export ();
173 if (!_exporting_realtime) {
174 /* make sure we've caught up with disk i/o, since
175 we're running faster than realtime c/o JACK.
178 wait_till_butler_finished ();
181 /* do the usual stuff */
183 process_without_events (nframes);
187 ProcessExport (nframes);
189 } catch (ExportFailed e) {
190 export_status->abort (true);
195 Session::process_export_fw (nframes_t nframes)
197 process_export (nframes);
202 Session::stop_audio_export ()
204 if (_exporting_realtime) {
205 process_function = last_process_function;
207 export_freewheel_connection.disconnect();
210 /* can't use stop_transport() here because we need
211 an immediate halt and don't require all the declick
212 stuff that stop_transport() implements.
215 realtime_stop (true);
216 schedule_butler_transport_work ();
218 if (!export_status->aborted()) {
219 ExportReadFinished ();
221 finalize_audio_export ();
229 Session::finalize_audio_export ()
232 export_status->running = false;
234 if (!_exporting_realtime) {
235 _engine.freewheel (false);
236 _exporting_realtime = false;
241 ProcessExport.clear();
242 ExportReadFinished.clear();
243 export_freewheel_connection.disconnect();
244 export_handler.reset();
245 export_status.reset();
247 /* restart slaving */
249 if (post_export_slave != None) {
250 Config->set_slave_source (post_export_slave);
252 locate (post_export_position, false, false, false);