#include "ardour/session.h"
#include "ardour/track.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
using namespace std;
using namespace ARDOUR;
}
}
- /* 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 ();
/** Called for each range that is being exported */
int
-Session::start_audio_export (framepos_t position)
+Session::start_audio_export (framepos_t position, bool realtime)
{
if (!_exporting) {
pre_export ();
}
- _export_started = false;
+
+ _realtime_export = realtime;
+
+ if (realtime) {
+ _export_preroll = nominal_frame_rate ();
+ } else {
+ _export_preroll = Config->get_export_preroll() * nominal_frame_rate ();
+ }
+
+ if (_export_preroll == 0) {
+ // must be > 0 so that transport is started in sync.
+ _export_preroll = 1;
+ }
+
+ /* "worst_track_latency" is the correct value for stem-exports
+ * see to Route::add_export_point(),
+ *
+ * for master-bus export, we'd need to add the master's latency.
+ * or actually longest-total-session-latency.
+ *
+ * We can't use worst_playback_latency because that includes
+ * includes external latencies and would overcompensate.
+ */
+ _export_latency = worst_track_latency ();
/* 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 */
}
_engine.Freewheel.connect_same_thread (export_freewheel_connection, boost::bind (&Session::process_export_fw, this, _1));
- _export_rolling = true;
- return _engine.freewheel (true);
+
+ if (_realtime_export) {
+ Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
+ _export_rolling = true;
+ process_function = &Session::process_export_fw;
+ return 0;
+ } else {
+ _export_rolling = true;
+ return _engine.freewheel (true);
+ }
}
-int
+void
Session::process_export (pframes_t nframes)
{
if (_export_rolling && export_status->stop) {
}
if (_export_rolling) {
- /* make sure we've caught up with disk i/o, since
- we're running faster than realtime c/o JACK.
- */
- _butler->wait_until_finished ();
+ if (!_realtime_export) {
+ /* make sure we've caught up with disk i/o, since
+ * we're running faster than realtime c/o JACK.
+ */
+ _butler->wait_until_finished ();
+ }
/* do the usual stuff */
process_without_events (nframes);
+ } else if (_realtime_export) {
+ fail_roll (nframes); // somehow we need to silence _ALL_ output buffers
}
try {
} catch (std::exception & e) {
error << string_compose (_("Export ended unexpectedly: %1"), e.what()) << endmsg;
export_status->abort (true);
- return -1;
}
-
- return 0;
}
-int
+void
Session::process_export_fw (pframes_t nframes)
{
- if (!_export_started) {
- _export_started = true;
+ const bool need_buffers = _engine.freewheeling ();
+ if (_export_preroll > 0) {
+
+ if (need_buffers) {
+ _engine.main_thread()->get_buffers ();
+ }
+ fail_roll (nframes);
+ if (need_buffers) {
+ _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;
+ }
+
set_transport_speed (1.0, 0, false);
butler_transport_work ();
g_atomic_int_set (&_butler->should_do_transport_work, 0);
post_transport ();
- return 0;
+
+ return;
+ }
+
+ if (_export_latency > 0) {
+ framepos_t remain = std::min ((framepos_t)nframes, _export_latency);
+
+ if (need_buffers) {
+ _engine.main_thread()->get_buffers ();
+ }
+ process_without_events (remain);
+ if (need_buffers) {
+ _engine.main_thread()->drop_buffers ();
+ }
+
+ _export_latency -= remain;
+ nframes -= remain;
+
+ if (nframes == 0) {
+ return;
+ }
+ }
+
+ if (need_buffers) {
+ _engine.main_thread()->get_buffers ();
}
-
- _engine.main_thread()->get_buffers ();
process_export (nframes);
- _engine.main_thread()->drop_buffers ();
+ if (need_buffers) {
+ _engine.main_thread()->drop_buffers ();
+ }
- return 0;
+ return;
}
int
/* Clean up */
+ if (_realtime_export) {
+ Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
+ process_function = &Session::process_with_events;
+ }
_engine.freewheel (false);
-
export_freewheel_connection.disconnect();
-
+
_mmc->enable_send (_pre_export_mmc_enabled);
/* maybe write CUE/TOC */
projects / ardour.git / blobdiff