#include "midi++/mmc.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
using namespace ARDOUR;
using namespace PBD;
(this->*process_function) (nframes);
+ /* realtime-safe meter-position and processor-order changes
+ *
+ * ideally this would be done in
+ * Route::process_output_buffers() but various functions
+ * callig it hold a _processor_lock reader-lock
+ */
+ boost::shared_ptr<RouteList> r = routes.reader ();
+ for (RouteList::const_iterator i = r->begin(); i != r->end(); ++i) {
+ if ((*i)->apply_processor_changes_rt()) {
+ _rt_emit_pending = true;
+ }
+ }
+ if (_rt_emit_pending) {
+ if (!_rt_thread_active) {
+ emit_route_signals ();
+ }
+ if (pthread_mutex_trylock (&_rt_emit_mutex) == 0) {
+ pthread_cond_signal (&_rt_emit_cond);
+ pthread_mutex_unlock (&_rt_emit_mutex);
+ _rt_emit_pending = false;
+ }
+ }
+
_engine.main_thread()->drop_buffers ();
/* deliver MIDI clock. Note that we need to use the transport frame
Session::no_roll (pframes_t nframes)
{
PT_TIMING_CHECK (4);
-
+
framepos_t end_frame = _transport_frame + nframes; // FIXME: varispeed + no_roll ??
int ret = 0;
- int declick = get_transport_declick_required();
+ int declick = (config.get_use_transport_fades() ? get_transport_declick_required() : false);
boost::shared_ptr<RouteList> r = routes.reader ();
if (_click_io) {
int
Session::process_routes (pframes_t nframes, bool& need_butler)
{
- int declick = get_transport_declick_required();
+ int declick = (config.get_use_transport_fades() ? get_transport_declick_required() : false);
boost::shared_ptr<RouteList> r = routes.reader ();
const framepos_t start_frame = _transport_frame;
const framepos_t end_frame = _transport_frame + floor (nframes * _transport_speed);
-
+
if (_process_graph) {
DEBUG_TRACE(DEBUG::ProcessThreads,"calling graph/process-routes\n");
- _process_graph->process_routes (nframes, start_frame, end_frame, declick, need_butler);
+ if (_process_graph->process_routes (nframes, start_frame, end_frame, declick, need_butler) < 0) {
+ stop_transport ();
+ return -1;
+ }
} else {
for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
Session::process_with_events (pframes_t nframes)
{
PT_TIMING_CHECK (3);
-
+
SessionEvent* ev;
pframes_t this_nframes;
framepos_t end_frame;
}
if (events.empty() || next_event == events.end()) {
+ try_run_lua (nframes); // also during export ?? ->move to process_without_events()
process_without_events (nframes);
return;
}
send_midi_time_code_for_cycle (_transport_frame, end_frame, nframes);
}
+ ltc_tx_send_time_code_for_cycle (_transport_frame, end_frame, _target_transport_speed, _transport_speed, nframes);
+
framepos_t stop_limit = compute_stop_limit ();
if (maybe_stop (stop_limit)) {
this_nframes = abs (floor(frames_moved / _transport_speed));
}
+ try_run_lua (this_nframes);
+
if (this_nframes) {
click (_transport_frame, this_nframes);
for now.
*/
- bool need_butler;
+ bool need_butler = false;
silent_process_routes (nframes, need_butler);
default:
fatal << string_compose(_("Programming error: illegal event type in process_event (%1)"), ev->type) << endmsg;
- /*NOTREACHED*/
+ abort(); /*NOTREACHED*/
break;
};
return max_framepos;
}
-
+
bool const punching_in = (config.get_punch_in () && _locations->auto_punch_location());
bool const punching_out = (config.get_punch_out () && _locations->auto_punch_location());
return current_end_frame ();
}
+
+
+
+/* dedicated thread for signal emission.
+ *
+ * while sending cross-thread signals from the process thread
+ * is fine in general, PBD::Signal's use of boost::function and
+ * boost:bind can produce a vast overhead which is not
+ * acceptable for low latency.
+ *
+ * This works around the issue by moving the boost overhead
+ * out of the RT thread. The overall load is probably higher but
+ * the realtime thread remains unaffected.
+ */
+
+void
+Session::emit_route_signals ()
+{
+ // TODO use RAII to allow using these signals in other places
+ BatchUpdateStart(); /* EMIT SIGNAL */
+ boost::shared_ptr<RouteList> r = routes.reader ();
+ for (RouteList::const_iterator ci = r->begin(); ci != r->end(); ++ci) {
+ (*ci)->emit_pending_signals ();
+ }
+ BatchUpdateEnd(); /* EMIT SIGNAL */
+}
+
+void
+Session::emit_thread_start ()
+{
+ if (_rt_thread_active) {
+ return;
+ }
+ _rt_thread_active = true;
+
+ if (pthread_create (&_rt_emit_thread, NULL, emit_thread, this)) {
+ _rt_thread_active = false;
+ }
+}
+
+void
+Session::emit_thread_terminate ()
+{
+ if (!_rt_thread_active) {
+ return;
+ }
+ _rt_thread_active = false;
+
+ if (pthread_mutex_lock (&_rt_emit_mutex) == 0) {
+ pthread_cond_signal (&_rt_emit_cond);
+ pthread_mutex_unlock (&_rt_emit_mutex);
+ }
+
+ void *status;
+ pthread_join (_rt_emit_thread, &status);
+}
+
+void *
+Session::emit_thread (void *arg)
+{
+ Session *s = static_cast<Session *>(arg);
+ s->emit_thread_run ();
+ pthread_exit (0);
+ return 0;
+}
+
+void
+Session::emit_thread_run ()
+{
+ pthread_mutex_lock (&_rt_emit_mutex);
+ while (_rt_thread_active) {
+ emit_route_signals();
+ pthread_cond_wait (&_rt_emit_cond, &_rt_emit_mutex);
+ }
+ pthread_mutex_unlock (&_rt_emit_mutex);
+}
projects / ardour.git / blobdiff