}
}
- /* make sure we are actually rolling */
+ /* prepare transport */
+
+ realtime_stop (true, true);
if (get_record_enabled()) {
disable_record (false);
}
+ unset_play_loop ();
+
/* no slaving */
post_export_sync = config.get_external_sync ();
config.set_external_sync (false);
_exporting = true;
- export_status->running = true;
+ export_status->set_running (true);
export_status->Finished.connect_same_thread (*this, boost::bind (&Session::finalize_audio_export, this));
-
+
/* disable MMC output early */
_pre_export_mmc_enabled = _mmc->send_enabled ();
if (!_exporting) {
pre_export ();
}
- _export_started = false;
+
+ _export_preroll = Config->get_export_preroll() * nominal_frame_rate ();
/* We're about to call Track::seek, so the butler must have finished everything
up otherwise it could be doing do_refill in its thread while we are doing
it here.
*/
-
+
_butler->wait_until_finished ();
/* get everyone to the right position */
int
Session::process_export_fw (pframes_t nframes)
{
- if (!_export_started) {
- _export_started = true;
- set_transport_speed (1.0, false);
+ if (_export_preroll > 0) {
+
+ _engine.main_thread()->get_buffers ();
+ fail_roll (nframes);
+ _engine.main_thread()->drop_buffers ();
+
+ _export_preroll -= std::min ((framepos_t)nframes, _export_preroll);
+
+ if (_export_preroll > 0) {
+ // clear out buffers (reverb tails etc).
+ return 0;
+ }
+
+ set_transport_speed (1.0, 0, false);
butler_transport_work ();
g_atomic_int_set (&_butler->should_do_transport_work, 0);
post_transport ();
return 0;
}
-
- _engine.main_thread()->get_buffers ();
+
+ _engine.main_thread()->get_buffers ();
process_export (nframes);
- _engine.main_thread()->drop_buffers ();
+ _engine.main_thread()->drop_buffers ();
return 0;
}
_engine.freewheel (false);
export_freewheel_connection.disconnect();
-
+
_mmc->enable_send (_pre_export_mmc_enabled);
/* maybe write CUE/TOC */