X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fsession_process.cc;h=766ce395e51fc16edc60afbd46ba93526bcaf6e3;hb=66163305317e8acf20c4a16b9709fc809d6a0ff9;hp=067a91da48f45449933c1960cdc3482fe7681e3e;hpb=30968b854257cb5f9159ca59589f783c85615601;p=ardour.git diff --git a/libs/ardour/session_process.cc b/libs/ardour/session_process.cc index 067a91da48..766ce395e5 100644 --- a/libs/ardour/session_process.cc +++ b/libs/ardour/session_process.cc @@ -35,17 +35,15 @@ #include "ardour/graph.h" #include "ardour/port.h" #include "ardour/process_thread.h" +#include "ardour/scene_changer.h" #include "ardour/session.h" #include "ardour/slave.h" #include "ardour/ticker.h" #include "ardour/types.h" -#include "midi++/manager.h" #include "midi++/mmc.h" -#include "i18n.h" - -#include +#include "pbd/i18n.h" using namespace ARDOUR; using namespace PBD; @@ -77,6 +75,29 @@ Session::process (pframes_t nframes) (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 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 @@ -86,9 +107,12 @@ Session::process (pframes_t nframes) */ try { - if (!_engine.freewheeling() && Config->get_send_midi_clock() && transport_speed() == 1.0f && midi_clock->has_midi_port()) { - midi_clock->tick (transport_at_start); + if (!_silent && !_engine.freewheeling() && Config->get_send_midi_clock() && (transport_speed() == 1.0f || transport_speed() == 0.0f) && midi_clock->has_midi_port()) { + midi_clock->tick (transport_at_start, nframes); } + + _scene_changer->run (transport_at_start, transport_at_start + nframes); + } catch (...) { /* don't bother with a message */ } @@ -106,10 +130,10 @@ int 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 r = routes.reader (); if (_click_io) { @@ -150,20 +174,18 @@ Session::no_roll (pframes_t nframes) 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 r = routes.reader (); - if (transport_sub_state & StopPendingCapture) { - /* force a declick out */ - declick = -1; - } - 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) { @@ -262,7 +284,7 @@ void Session::process_with_events (pframes_t nframes) { PT_TIMING_CHECK (3); - + SessionEvent* ev; pframes_t this_nframes; framepos_t end_frame; @@ -292,6 +314,47 @@ Session::process_with_events (pframes_t nframes) process_event (ev); } + /* count in */ + if (_transport_speed != 1.0 && _count_in_samples > 0) { + _count_in_samples = 0; + } + + if (_count_in_samples > 0) { + framecnt_t ns = std::min ((framecnt_t)nframes, _count_in_samples); + + no_roll (ns); + run_click (_transport_frame - _count_in_samples, ns); + + _count_in_samples -= ns; + nframes -= ns; + + /* process events.. */ + if (!events.empty() && next_event != events.end()) { + SessionEvent* this_event = *next_event; + Events::iterator the_next_one = next_event; + ++the_next_one; + + while (this_event && this_event->action_frame == _transport_frame) { + process_event (this_event); + if (the_next_one == events.end()) { + this_event = 0; + } else { + this_event = *the_next_one; + ++the_next_one; + } + } + set_next_event (); + } + + check_declick_out (); + + if (nframes == 0) { + return; + } else { + _engine.split_cycle (ns); + } + } + /* Decide on what to do with quarter-frame MTC during this cycle */ bool const was_sending_qf_mtc = _send_qf_mtc; @@ -327,7 +390,7 @@ Session::process_with_events (pframes_t nframes) * and prepare for rolling) */ if (_send_timecode_update) { - send_full_time_code (_transport_frame); + send_full_time_code (_transport_frame, nframes); } if (!process_can_proceed()) { @@ -336,8 +399,15 @@ Session::process_with_events (pframes_t nframes) } if (events.empty() || next_event == events.end()) { - process_without_events (nframes); - return; + try_run_lua (nframes); // also during export ?? ->move to process_without_events() + /* lua scripts may inject events */ + while (_n_lua_scripts > 0 && pending_events.read (&ev, 1) == 1) { + merge_event (ev); + } + if (events.empty() || next_event == events.end()) { + process_without_events (nframes); + return; + } } if (_transport_speed == 1.0) { @@ -374,6 +444,8 @@ Session::process_with_events (pframes_t nframes) 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)) { @@ -401,6 +473,8 @@ Session::process_with_events (pframes_t nframes) this_nframes = abs (floor(frames_moved / _transport_speed)); } + try_run_lua (this_nframes); + if (this_nframes) { click (_transport_frame, this_nframes); @@ -424,7 +498,9 @@ Session::process_with_events (pframes_t nframes) check_declick_out (); } - _engine.split_cycle (this_nframes); + if (nframes > 0) { + _engine.split_cycle (this_nframes); + } /* now handle this event and all others scheduled for the same time */ @@ -578,7 +654,7 @@ Session::follow_slave (pframes_t nframes) #endif if (_slave->give_slave_full_control_over_transport_speed()) { - set_transport_speed (slave_speed, false, false); + set_transport_speed (slave_speed, 0, false, false); //std::cout << "set speed = " << slave_speed << "\n"; } else { float adjusted_speed = slave_speed + (1.5 * (delta / float(_current_frame_rate))); @@ -759,7 +835,7 @@ Session::follow_slave_silently (pframes_t nframes, float slave_speed) for now. */ - bool need_butler; + bool need_butler = false; silent_process_routes (nframes, need_butler); @@ -876,7 +952,7 @@ Session::process_audition (pframes_t nframes) /* if using a monitor section, run it because otherwise we don't hear anything */ - if (auditioner->needs_monitor()) { + if (_monitor_out && auditioner->needs_monitor()) { _monitor_out->monitor_run (_transport_frame, _transport_frame + nframes, nframes, false); } @@ -1011,7 +1087,7 @@ Session::process_event (SessionEvent* ev) switch (ev->type) { case SessionEvent::SetLoop: - set_play_loop (ev->yes_or_no); + set_play_loop (ev->yes_or_no, ev->speed); break; case SessionEvent::AutoLoop: @@ -1058,6 +1134,15 @@ Session::process_event (SessionEvent* ev) _send_timecode_update = true; break; + case SessionEvent::Skip: + if (Config->get_skip_playback()) { + start_locate (ev->target_frame, true, true, false); + _send_timecode_update = true; + } + remove = false; + del = false; + break; + case SessionEvent::LocateRollLocate: // locate is handled by ::request_roll_at_and_return() _requested_return_frame = ev->target_frame; @@ -1066,12 +1151,12 @@ Session::process_event (SessionEvent* ev) case SessionEvent::SetTransportSpeed: - set_transport_speed (ev->speed, ev->yes_or_no, ev->second_yes_or_no, ev->third_yes_or_no); + set_transport_speed (ev->speed, ev->target_frame, ev->yes_or_no, ev->second_yes_or_no, ev->third_yes_or_no); break; case SessionEvent::PunchIn: // cerr << "PunchIN at " << transport_frame() << endl; - if (config.get_punch_in() && record_status() == Enabled) { + if (config.get_punch_in() && record_status() == Enabled && !preroll_record_punch_enabled()) { enable_record (); } remove = false; @@ -1080,17 +1165,25 @@ Session::process_event (SessionEvent* ev) case SessionEvent::PunchOut: // cerr << "PunchOUT at " << transport_frame() << endl; - if (config.get_punch_out()) { + if (config.get_punch_out() && !preroll_record_punch_enabled()) { step_back_from_record (); } remove = false; del = false; break; + case SessionEvent::RecordStart: + if (preroll_record_punch_enabled() && record_status() == Enabled) { + enable_record (); + } + remove = false; + del = false; + break; + case SessionEvent::StopOnce: if (!non_realtime_work_pending()) { - stop_transport (ev->yes_or_no); _clear_event_type (SessionEvent::StopOnce); + stop_transport (ev->yes_or_no); } remove = false; del = false; @@ -1139,6 +1232,10 @@ Session::process_event (SessionEvent* ev) set_play_range (ev->audio_range, (ev->speed == 1.0f)); break; + case SessionEvent::CancelPlayAudioRange: + unset_play_range(); + break; + case SessionEvent::RealTimeOperation: process_rtop (ev); del = false; // other side of RT request needs to clean up @@ -1158,7 +1255,7 @@ Session::process_event (SessionEvent* ev) default: fatal << string_compose(_("Programming error: illegal event type in process_event (%1)"), ev->type) << endmsg; - /*NOTREACHED*/ + abort(); /*NOTREACHED*/ break; }; @@ -1182,7 +1279,10 @@ Session::compute_stop_limit () const return max_framepos; } - + if (preroll_record_punch_enabled ()) { + 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()); @@ -1199,3 +1299,79 @@ Session::compute_stop_limit () const 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 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(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); +}