X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fsession_midi.cc;h=e4fd58dedc34635a93996c3a3cb604fa908b9bd7;hb=bb8cb93789b2eec65e4d82e5ceb64054673cbc4f;hp=1af00ca337ed3b9cd704303cccee9f5c129ec2e7;hpb=93c7aeba048f19df5abee5e4325ef8b0ef62c279;p=ardour.git diff --git a/libs/ardour/session_midi.cc b/libs/ardour/session_midi.cc index 1af00ca337..e4fd58dedc 100644 --- a/libs/ardour/session_midi.cc +++ b/libs/ardour/session_midi.cc @@ -1,6 +1,5 @@ - /* - Copyright (C) 1999-2002 Paul Davis + Copyright (C) 1999-2002 Paul Davis This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -16,364 +15,68 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id$ */ #include #include #include +#include #include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include -#include "i18n.h" +#include -using namespace std; -using namespace ARDOUR; -using namespace PBD; -using namespace MIDI; +#include -MachineControl::CommandSignature MMC_CommandSignature; -MachineControl::ResponseSignature MMC_ResponseSignature; +#include "midi++/mmc.h" +#include "midi++/port.h" +#include "midi++/manager.h" -MultiAllocSingleReleasePool Session::MIDIRequest::pool ("midi", sizeof (Session::MIDIRequest), 1024); +#include "pbd/error.h" +#include "pbd/pthread_utils.h" +#include "pbd/timersub.h" -int -Session::use_config_midi_ports () -{ - string port_name; +#include "timecode/time.h" - if (default_mmc_port) { - set_mmc_port (default_mmc_port->name()); - } else { - set_mmc_port (""); - } +#include "ardour/audio_track.h" +#include "ardour/audioengine.h" +#include "ardour/debug.h" +#include "ardour/midi_track.h" +#include "ardour/midi_ui.h" +#include "ardour/session.h" +#include "ardour/slave.h" +#include "ardour/ticker.h" - if (default_mtc_port) { - set_mtc_port (default_mtc_port->name()); - } else { - set_mtc_port (""); - } - - if (default_midi_port) { - set_midi_port (default_midi_port->name()); - } else { - set_midi_port (""); - } - - return 0; -} - - -/*********************************************************************** - MTC, MMC, etc. -**********************************************************************/ - -int -Session::set_mtc_port (string port_tag) -{ - MTC_Slave *ms; - - if (port_tag.length() == 0) { - - if (_slave && ((ms = dynamic_cast (_slave)) != 0)) { - error << _("Ardour is slaved to MTC - port cannot be reset") << endmsg; - return -1; - } - - if (_mtc_port == 0) { - return 0; - } - - _mtc_port = 0; - goto out; - } - - MIDI::Port* port; - - if ((port = MIDI::Manager::instance()->port (port_tag)) == 0) { - error << string_compose (_("unknown port %1 requested for MTC"), port_tag) << endl; - return -1; - } - - _mtc_port = port; - - if (_slave && ((ms = dynamic_cast (_slave)) != 0)) { - ms->rebind (*port); - } - - Config->set_mtc_port_name (port_tag); - - out: - MTC_PortChanged(); /* EMIT SIGNAL */ - change_midi_ports (); - set_dirty(); - return 0; -} - -int -Session::set_mmc_port (string port_tag) -{ - if (port_tag.length() == 0) { - if (_mmc_port == 0) { - return 0; - } - _mmc_port = 0; - goto out; - } - - MIDI::Port* port; - - if ((port = MIDI::Manager::instance()->port (port_tag)) == 0) { - return -1; - } - - _mmc_port = port; - - if (mmc) { - delete mmc; - } - - mmc = new MIDI::MachineControl (*_mmc_port, 1.0, - MMC_CommandSignature, - MMC_ResponseSignature); - - - mmc->Play.connect - (mem_fun (*this, &Session::mmc_deferred_play)); - mmc->DeferredPlay.connect - (mem_fun (*this, &Session::mmc_deferred_play)); - mmc->Stop.connect - (mem_fun (*this, &Session::mmc_stop)); - mmc->FastForward.connect - (mem_fun (*this, &Session::mmc_fast_forward)); - mmc->Rewind.connect - (mem_fun (*this, &Session::mmc_rewind)); - mmc->Pause.connect - (mem_fun (*this, &Session::mmc_pause)); - mmc->RecordPause.connect - (mem_fun (*this, &Session::mmc_record_pause)); - mmc->RecordStrobe.connect - (mem_fun (*this, &Session::mmc_record_strobe)); - mmc->RecordExit.connect - (mem_fun (*this, &Session::mmc_record_exit)); - mmc->Locate.connect - (mem_fun (*this, &Session::mmc_locate)); - mmc->Step.connect - (mem_fun (*this, &Session::mmc_step)); - mmc->Shuttle.connect - (mem_fun (*this, &Session::mmc_shuttle)); - mmc->TrackRecordStatusChange.connect - (mem_fun (*this, &Session::mmc_record_enable)); - - /* also handle MIDI SPP because its so common */ - - _mmc_port->input()->start.connect (mem_fun (*this, &Session::spp_start)); - _mmc_port->input()->contineu.connect (mem_fun (*this, &Session::spp_continue)); - _mmc_port->input()->stop.connect (mem_fun (*this, &Session::spp_stop)); - - Config->set_mmc_port_name (port_tag); - - out: - MMC_PortChanged(); /* EMIT SIGNAL */ - change_midi_ports (); - set_dirty(); - return 0; -} - -int -Session::set_midi_port (string port_tag) -{ - if (port_tag.length() == 0) { - if (_midi_port == 0) { - return 0; - } - _midi_port = 0; - goto out; - } - - MIDI::Port* port; - - if ((port = MIDI::Manager::instance()->port (port_tag)) == 0) { - return -1; - } - - _midi_port = port; - - /* XXX need something to forward this to control protocols ? or just - use the signal below - */ - - Config->set_midi_port_name (port_tag); - - out: - MIDI_PortChanged(); /* EMIT SIGNAL */ - change_midi_ports (); - set_dirty(); - return 0; -} - -void -Session::set_trace_midi_input (bool yn, MIDI::Port* port) -{ - MIDI::Parser* input_parser; - - if (port) { - if ((input_parser = port->input()) != 0) { - input_parser->trace (yn, &cout, "input: "); - } - } else { - - if (_mmc_port) { - if ((input_parser = _mmc_port->input()) != 0) { - input_parser->trace (yn, &cout, "input: "); - } - } - - if (_mtc_port && _mtc_port != _mmc_port) { - if ((input_parser = _mtc_port->input()) != 0) { - input_parser->trace (yn, &cout, "input: "); - } - } - - if (_midi_port && _midi_port != _mmc_port && _midi_port != _mtc_port ) { - if ((input_parser = _midi_port->input()) != 0) { - input_parser->trace (yn, &cout, "input: "); - } - } - } +#include "i18n.h" - Config->set_trace_midi_input (yn); -} +using namespace std; +using namespace ARDOUR; +using namespace PBD; +using namespace MIDI; +using namespace Glib; void -Session::set_trace_midi_output (bool yn, MIDI::Port* port) -{ - MIDI::Parser* output_parser; - - if (port) { - if ((output_parser = port->output()) != 0) { - output_parser->trace (yn, &cout, "output: "); - } - } else { - if (_mmc_port) { - if ((output_parser = _mmc_port->output()) != 0) { - output_parser->trace (yn, &cout, "output: "); - } - } - - if (_mtc_port && _mtc_port != _mmc_port) { - if ((output_parser = _mtc_port->output()) != 0) { - output_parser->trace (yn, &cout, "output: "); - } - } - - if (_midi_port && _midi_port != _mmc_port && _midi_port != _mtc_port ) { - if ((output_parser = _midi_port->output()) != 0) { - output_parser->trace (yn, &cout, "output: "); - } - } - - } - - Config->set_trace_midi_output (yn); -} - -bool -Session::get_trace_midi_input(MIDI::Port *port) +Session::midi_panic() { - MIDI::Parser* input_parser; - if (port) { - if ((input_parser = port->input()) != 0) { - return input_parser->tracing(); - } - } - else { - if (_mmc_port) { - if ((input_parser = _mmc_port->input()) != 0) { - return input_parser->tracing(); - } - } - - if (_mtc_port) { - if ((input_parser = _mtc_port->input()) != 0) { - return input_parser->tracing(); - } - } - - if (_midi_port) { - if ((input_parser = _midi_port->input()) != 0) { - return input_parser->tracing(); - } - } - } - - return false; -} - -bool -Session::get_trace_midi_output(MIDI::Port *port) -{ - MIDI::Parser* output_parser; - if (port) { - if ((output_parser = port->output()) != 0) { - return output_parser->tracing(); - } - } - else { - if (_mmc_port) { - if ((output_parser = _mmc_port->output()) != 0) { - return output_parser->tracing(); - } - } - - if (_mtc_port) { - if ((output_parser = _mtc_port->output()) != 0) { - return output_parser->tracing(); - } - } + { + boost::shared_ptr r = routes.reader (); - if (_midi_port) { - if ((output_parser = _midi_port->output()) != 0) { - return output_parser->tracing(); + for (RouteList::iterator i = r->begin(); i != r->end(); ++i) { + MidiTrack *track = dynamic_cast((*i).get()); + if (track != 0) { + track->midi_panic(); } } } - - return false; - } void Session::setup_midi_control () { - outbound_mtc_smpte_frame = 0; - next_quarter_frame_to_send = -1; - - /* setup the MMC buffer */ - - mmc_buffer[0] = 0xf0; // SysEx - mmc_buffer[1] = 0x7f; // Real Time SysEx ID for MMC - mmc_buffer[2] = 0x7f; // "broadcast" device ID - mmc_buffer[3] = 0x6; // MCC + outbound_mtc_timecode_frame = 0; + next_quarter_frame_to_send = 0; /* Set up the qtr frame message */ - + mtc_msg[0] = 0xf1; mtc_msg[2] = 0xf1; mtc_msg[4] = 0xf1; @@ -382,107 +85,52 @@ Session::setup_midi_control () mtc_msg[10] = 0xf1; mtc_msg[12] = 0xf1; mtc_msg[14] = 0xf1; - - if (_mmc_port != 0) { - - Config->set_send_mmc (session_send_mmc); - - } else { - - mmc = 0; - session_send_mmc = false; - } - - if (_mtc_port != 0) { - - Config->set_send_mtc (session_send_mtc); - - } else { - session_send_mtc = false; - } -} - -int -Session::midi_read (MIDI::Port* port) -{ - MIDI::byte buf[512]; - - /* reading from the MIDI port activates the Parser - that in turn generates signals that we care - about. the port is already set to NONBLOCK so that - can read freely here. - */ - - while (1) { - - // cerr << "+++ READ ON " << port->name() << endl; - - int nread = port->read (buf, sizeof (buf)); - - // cerr << "-- READ (" << nread << " ON " << port->name() << endl; - - if (nread > 0) { - if ((size_t) nread < sizeof (buf)) { - break; - } else { - continue; - } - } else if (nread == 0) { - break; - } else if (errno == EAGAIN) { - break; - } else { - fatal << string_compose(_("Error reading from MIDI port %1"), port->name()) << endmsg; - /*NOTREACHED*/ - } - } - - return 0; } void -Session::spp_start (Parser& ignored) +Session::spp_start () { - if (Config->get_mmc_control() && (Config->get_slave_source() != MTC)) { + if (Config->get_mmc_control ()) { request_transport_speed (1.0); } } void -Session::spp_continue (Parser& ignored) +Session::spp_continue () { - spp_start (ignored); + spp_start (); } void -Session::spp_stop (Parser& ignored) +Session::spp_stop () { - if (Config->get_mmc_control()) { + if (Config->get_mmc_control ()) { request_stop (); } } void -Session::mmc_deferred_play (MIDI::MachineControl &mmc) +Session::mmc_deferred_play (MIDI::MachineControl &/*mmc*/) { - if (Config->get_mmc_control() && (Config->get_slave_source() != MTC)) { + if (Config->get_mmc_control ()) { request_transport_speed (1.0); } } void -Session::mmc_record_pause (MIDI::MachineControl &mmc) +Session::mmc_record_pause (MIDI::MachineControl &/*mmc*/) { - if (Config->get_mmc_control()) { + if (Config->get_mmc_control ()) { maybe_enable_record(); } } void -Session::mmc_record_strobe (MIDI::MachineControl &mmc) +Session::mmc_record_strobe (MIDI::MachineControl &/*mmc*/) { - if (!Config->get_mmc_control()) + if (!Config->get_mmc_control() || (_step_editors > 0)) { return; + } /* record strobe does an implicit "Play" command */ @@ -493,11 +141,11 @@ Session::mmc_record_strobe (MIDI::MachineControl &mmc) its not the same as maybe_enable_record() though, because that *can* switch to Recording, which we do not want. */ - + save_state ("", true); g_atomic_int_set (&_record_status, Enabled); RecordStateChanged (); /* EMIT SIGNAL */ - + request_transport_speed (1.0); } else { @@ -507,25 +155,25 @@ Session::mmc_record_strobe (MIDI::MachineControl &mmc) } void -Session::mmc_record_exit (MIDI::MachineControl &mmc) +Session::mmc_record_exit (MIDI::MachineControl &/*mmc*/) { - if (Config->get_mmc_control()) { + if (Config->get_mmc_control ()) { disable_record (false); } } void -Session::mmc_stop (MIDI::MachineControl &mmc) +Session::mmc_stop (MIDI::MachineControl &/*mmc*/) { - if (Config->get_mmc_control()) { + if (Config->get_mmc_control ()) { request_stop (); } } void -Session::mmc_pause (MIDI::MachineControl &mmc) +Session::mmc_pause (MIDI::MachineControl &/*mmc*/) { - if (Config->get_mmc_control()) { + if (Config->get_mmc_control ()) { /* We support RECORD_PAUSE, so the spec says that we must interpret PAUSE like RECORD_PAUSE if @@ -543,10 +191,9 @@ Session::mmc_pause (MIDI::MachineControl &mmc) static bool step_queued = false; void - -Session::mmc_step (MIDI::MachineControl &mmc, int steps) +Session::mmc_step (MIDI::MachineControl &/*mmc*/, int steps) { - if (!Config->get_mmc_control()) { + if (!Config->get_mmc_control ()) { return; } @@ -554,7 +201,7 @@ Session::mmc_step (MIDI::MachineControl &mmc, int steps) struct timeval diff = { 0, 0 }; gettimeofday (&now, 0); - + timersub (&now, &last_mmc_step, &diff); gettimeofday (&now, 0); @@ -563,10 +210,10 @@ Session::mmc_step (MIDI::MachineControl &mmc, int steps) if (last_mmc_step.tv_sec != 0 && (diff.tv_usec + (diff.tv_sec * 1000000)) < _engine.usecs_per_cycle()) { return; } - + double diff_secs = diff.tv_sec + (diff.tv_usec / 1000000.0); - double cur_speed = (((steps * 0.5) * Config->get_smpte_frames_per_second()) / diff_secs) / Config->get_smpte_frames_per_second(); - + double cur_speed = (((steps * 0.5) * timecode_frames_per_second()) / diff_secs) / timecode_frames_per_second(); + if (_transport_speed == 0 || cur_speed * _transport_speed < 0) { /* change direction */ step_speed = cur_speed; @@ -577,59 +224,65 @@ Session::mmc_step (MIDI::MachineControl &mmc, int steps) step_speed *= 0.25; #if 0 - cerr << "delta = " << diff_secs + cerr << "delta = " << diff_secs << " ct = " << _transport_speed << " steps = " << steps - << " new speed = " << cur_speed + << " new speed = " << cur_speed << " speed = " << step_speed << endl; -#endif +#endif - request_transport_speed (step_speed); + request_transport_speed_nonzero (step_speed); last_mmc_step = now; if (!step_queued) { - midi_timeouts.push_back (mem_fun (*this, &Session::mmc_step_timeout)); - step_queued = true; + if (midi_control_ui) { + RefPtr tsrc = TimeoutSource::create (100); + tsrc->connect (sigc::mem_fun (*this, &Session::mmc_step_timeout)); + tsrc->attach (midi_control_ui->main_loop()->get_context()); + step_queued = true; + } } } void -Session::mmc_rewind (MIDI::MachineControl &mmc) +Session::mmc_rewind (MIDI::MachineControl &/*mmc*/) { - if (Config->get_mmc_control()) { + if (Config->get_mmc_control ()) { request_transport_speed(-8.0f); } } void -Session::mmc_fast_forward (MIDI::MachineControl &mmc) +Session::mmc_fast_forward (MIDI::MachineControl &/*mmc*/) { - if (Config->get_mmc_control()) { + if (Config->get_mmc_control ()) { request_transport_speed(8.0f); } } void -Session::mmc_locate (MIDI::MachineControl &mmc, const MIDI::byte* mmc_tc) +Session::mmc_locate (MIDI::MachineControl &/*mmc*/, const MIDI::byte* mmc_tc) { - if (!Config->get_mmc_control()) { + if (!Config->get_mmc_control ()) { return; } - nframes_t target_frame; - SMPTE::Time smpte; - - smpte.hours = mmc_tc[0] & 0xf; - smpte.minutes = mmc_tc[1]; - smpte.seconds = mmc_tc[2]; - smpte.frames = mmc_tc[3]; - - // Also takes smpte offset into account: - smpte_to_sample( smpte, target_frame, true /* use_offset */, false /* use_subframes */ ); - - if (target_frame > max_frames) { - target_frame = max_frames; + framepos_t target_frame; + Timecode::Time timecode; + + timecode.hours = mmc_tc[0] & 0xf; + timecode.minutes = mmc_tc[1]; + timecode.seconds = mmc_tc[2]; + timecode.frames = mmc_tc[3]; + timecode.rate = timecode_frames_per_second(); + timecode.drop = timecode_drop_frames(); + + // Also takes timecode offset into account: + timecode_to_sample( timecode, target_frame, true /* use_offset */, false /* use_subframes */ ); + + if (target_frame > max_framepos) { + target_frame = max_framepos; } /* Some (all?) MTC/MMC devices do not send a full MTC frame @@ -650,9 +303,9 @@ Session::mmc_locate (MIDI::MachineControl &mmc, const MIDI::byte* mmc_tc) } void -Session::mmc_shuttle (MIDI::MachineControl &mmc, float speed, bool forw) +Session::mmc_shuttle (MIDI::MachineControl &/*mmc*/, float speed, bool forw) { - if (!Config->get_mmc_control()) { + if (!Config->get_mmc_control ()) { return; } @@ -661,130 +314,102 @@ Session::mmc_shuttle (MIDI::MachineControl &mmc, float speed, bool forw) } if (forw) { - request_transport_speed (speed); + request_transport_speed_nonzero (speed); } else { - request_transport_speed (-speed); + request_transport_speed_nonzero (-speed); } } void Session::mmc_record_enable (MIDI::MachineControl &mmc, size_t trk, bool enabled) { - if (Config->get_mmc_control()) { - - RouteList::iterator i; - boost::shared_ptr r = routes.reader(); - - for (i = r->begin(); i != r->end(); ++i) { - AudioTrack *at; - - if ((at = dynamic_cast((*i).get())) != 0) { - if (trk == at->remote_control_id()) { - at->set_record_enable (enabled, &mmc); - break; - } - } - } - } -} - -void -Session::send_full_time_code_in_another_thread () -{ - send_time_code_in_another_thread (true); -} - -void -Session::send_midi_time_code_in_another_thread () -{ - send_time_code_in_another_thread (false); -} - -void -Session::send_time_code_in_another_thread (bool full) -{ - nframes_t two_smpte_frames_duration; - nframes_t quarter_frame_duration; - - /* Duration of two smpte frames */ - two_smpte_frames_duration = ((long) _frames_per_smpte_frame) << 1; - - /* Duration of one quarter frame */ - quarter_frame_duration = ((long) _frames_per_smpte_frame) >> 2; - - if (_transport_frame < (outbound_mtc_smpte_frame + (next_quarter_frame_to_send * quarter_frame_duration))) - { - /* There is no work to do. - We throttle this here so that we don't overload - the transport thread with requests. - */ + if (!Config->get_mmc_control ()) { return; } - MIDIRequest* request = new MIDIRequest; + RouteList::iterator i; + boost::shared_ptr r = routes.reader(); - if (full) { - request->type = MIDIRequest::SendFullMTC; - } else { - request->type = MIDIRequest::SendMTC; - } - - midi_requests.write (&request, 1); - poke_midi_thread (); -} + for (i = r->begin(); i != r->end(); ++i) { + AudioTrack *at; -void -Session::change_midi_ports () -{ - MIDIRequest* request = new MIDIRequest; - - request->type = MIDIRequest::PortChange; - midi_requests.write (&request, 1); - poke_midi_thread (); + if ((at = dynamic_cast((*i).get())) != 0) { + if (trk == at->remote_control_id()) { + at->set_record_enabled (enabled, &mmc); + break; + } + } + } } +/** Send MTC Full Frame message (complete Timecode time) for the start of this cycle. + * This resets the MTC code, the next quarter frame message that is sent will be + * the first one with the beginning of this cycle as the new start point. + * @param t time to send. + */ int -Session::send_full_time_code () - +Session::send_full_time_code (framepos_t const t) { + /* This function could easily send at a given frame offset, but would + * that be useful? Does ardour do sub-block accurate locating? [DR] */ + MIDI::byte msg[10]; - SMPTE::Time smpte; + Timecode::Time timecode; + + _send_timecode_update = false; - if (_mtc_port == 0 || !session_send_mtc) { + if (_engine.freewheeling() || !Config->get_send_mtc()) { return 0; } - - // Get smpte time for this transport frame - sample_to_smpte(_transport_frame, smpte, true /* use_offset */, false /* no subframes */); - - // Check for negative smpte time and prepare for quarter frame transmission - if (smpte.negative) { - // Negative mtc is not defined, so sync slave to smpte zero. - // When _transport_frame gets there we will start transmitting quarter frames - smpte.hours = 0; - smpte.minutes = 0; - smpte.seconds = 0; - smpte.frames = 0; - smpte.subframes = 0; - smpte.negative = false; - smpte_to_sample( smpte, outbound_mtc_smpte_frame, true, false ); - transmitting_smpte_time = smpte; - } else { - transmitting_smpte_time = smpte; - outbound_mtc_smpte_frame = _transport_frame; - if (((mtc_smpte_bits >> 5) != MIDI::MTC_25_FPS) && (transmitting_smpte_time.frames % 2)) { - // start MTC quarter frame transmission on an even frame - SMPTE::increment( transmitting_smpte_time ); - outbound_mtc_smpte_frame += (nframes_t) _frames_per_smpte_frame; - } + if (_slave && !_slave->locked()) { + return 0; } - // Compensate for audio latency - outbound_mtc_smpte_frame += _worst_output_latency; - + // Get timecode time for the given time + sample_to_timecode (t, timecode, true /* use_offset */, false /* no subframes */); + + // sample-align outbound to rounded (no subframes) timecode + framepos_t mtc_tc; + timecode_to_sample(timecode, mtc_tc, true, false); + outbound_mtc_timecode_frame = mtc_tc; + + transmitting_timecode_time = timecode; + + double const quarter_frame_duration = ((framecnt_t) _frames_per_timecode_frame) / 4.0; + if (ceil((t - mtc_tc) / quarter_frame_duration) > 0) { + Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame()); + outbound_mtc_timecode_frame += _frames_per_timecode_frame; + } + + DEBUG_TRACE (DEBUG::MTC, string_compose ("Full MTC TC %1\n", outbound_mtc_timecode_frame)); + + // I don't understand this bit yet.. [DR] + // I do [rg]: + // according to MTC spec 24, 30 drop and 30 non-drop TC, the frame-number represented by 8 quarter frames must be even. + if (((mtc_timecode_bits >> 5) != MIDI::MTC_25_FPS) && (transmitting_timecode_time.frames % 2)) { + // start MTC quarter frame transmission on an even frame + Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame()); + outbound_mtc_timecode_frame += _frames_per_timecode_frame; + } + +#if 0 // compensate for audio latency -- disabled [rg] + /* this needs more thought and work. + * the proper solution will be to just offset MTC by the MIDI port's latency. + * + * using worst_playback_latency() is wrong when the generated MTC is used to sync + * clients which send audio to Ardour for recording. + * worst_capture_latency() vs. worst_playback_latency() + * + * NB. similarly to session_ltc, the offset should be subtracted from the timecode to send, + * instead of being added to timestamp when to send the timecode. + * Otherwise the timestamp may not fall into the jack-cycle of the current _transport frame. + * and no MTC QF will be sent. + */ + outbound_mtc_timecode_frame += worst_playback_latency(); +#endif next_quarter_frame_to_send = 0; - // Sync slave to the same smpte time as we are on (except if negative, see above) + // Sync slave to the same Timecode time as we are on msg[0] = 0xf0; msg[1] = 0x7f; msg[2] = 0x7f; @@ -792,186 +417,140 @@ Session::send_full_time_code () msg[4] = 0x1; msg[9] = 0xf7; - msg[5] = mtc_smpte_bits | smpte.hours; - msg[6] = smpte.minutes; - msg[7] = smpte.seconds; - msg[8] = smpte.frames; + msg[5] = mtc_timecode_bits | timecode.hours; + msg[6] = timecode.minutes; + msg[7] = timecode.seconds; + msg[8] = timecode.frames; - { - Glib::Mutex::Lock lm (midi_lock); - - if (_mtc_port->midimsg (msg, sizeof (msg))) { - error << _("Session: could not send full MIDI time code") << endmsg; - - return -1; - } + // Send message at offset 0, sent time is for the start of this cycle + if (MIDI::Manager::instance()->mtc_output_port()->midimsg (msg, sizeof (msg), 0)) { + error << _("Session: could not send full MIDI time code") << endmsg; + return -1; } + _pframes_since_last_mtc = 0; return 0; } +/** Send MTC (quarter-frame) messages for this cycle. + * Must be called exactly once per cycle from the process thread. Realtime safe. + * This function assumes the state of full Timecode is sane, eg. the slave is + * expecting quarter frame messages and has the right frame of reference (any + * full MTC Timecode time messages that needed to be sent should have been sent + * earlier already this cycle by send_full_time_code) + */ int -Session::send_midi_time_code () +Session::send_midi_time_code_for_cycle (framepos_t start_frame, framepos_t end_frame, pframes_t nframes) { - if (_mtc_port == 0 || !session_send_mtc || transmitting_smpte_time.negative || (next_quarter_frame_to_send < 0) ) { + if (_engine.freewheeling() || !_send_qf_mtc || transmitting_timecode_time.negative || (next_quarter_frame_to_send < 0)) { + // cerr << "(MTC) Not sending MTC\n"; + return 0; + } + if (_slave && !_slave->locked()) { return 0; } - nframes_t two_smpte_frames_duration; - nframes_t quarter_frame_duration; + /* MTC is max. 30 fps - assert() below will fail + * TODO actually limit it to 24,25,29df,30fps + * talk to oofus, first. + */ + if (Timecode::timecode_to_frames_per_second(config.get_timecode_format()) > 30) { + return 0; + } - /* Duration of two smpte frames */ - two_smpte_frames_duration = ((long) _frames_per_smpte_frame) << 1; + assert (next_quarter_frame_to_send >= 0); + assert (next_quarter_frame_to_send <= 7); /* Duration of one quarter frame */ - quarter_frame_duration = ((long) _frames_per_smpte_frame) >> 2; + double const quarter_frame_duration = _frames_per_timecode_frame / 4.0; + + DEBUG_TRACE (DEBUG::MTC, string_compose ("TF %1 SF %2 MT %3 QF %4 QD %5\n", + _transport_frame, start_frame, outbound_mtc_timecode_frame, + next_quarter_frame_to_send, quarter_frame_duration)); - while (_transport_frame >= (outbound_mtc_smpte_frame + (next_quarter_frame_to_send * quarter_frame_duration))) { + if (rint(outbound_mtc_timecode_frame + (next_quarter_frame_to_send * quarter_frame_duration)) < _transport_frame) { + send_full_time_code (_transport_frame); + return 0; + } - // Send quarter frames up to current time - { - Glib::Mutex::Lock lm (midi_lock); + /* Send quarter frames for this cycle */ + while (end_frame > rint(outbound_mtc_timecode_frame + (next_quarter_frame_to_send * quarter_frame_duration))) { - switch(next_quarter_frame_to_send) { + DEBUG_TRACE (DEBUG::MTC, string_compose ("next frame to send: %1\n", next_quarter_frame_to_send)); + + switch (next_quarter_frame_to_send) { case 0: - mtc_msg[1] = 0x00 | (transmitting_smpte_time.frames & 0xf); + mtc_msg[1] = 0x00 | (transmitting_timecode_time.frames & 0xf); break; case 1: - mtc_msg[1] = 0x10 | ((transmitting_smpte_time.frames & 0xf0) >> 4); + mtc_msg[1] = 0x10 | ((transmitting_timecode_time.frames & 0xf0) >> 4); break; case 2: - mtc_msg[1] = 0x20 | (transmitting_smpte_time.seconds & 0xf); + mtc_msg[1] = 0x20 | (transmitting_timecode_time.seconds & 0xf); break; case 3: - mtc_msg[1] = 0x30 | ((transmitting_smpte_time.seconds & 0xf0) >> 4); + mtc_msg[1] = 0x30 | ((transmitting_timecode_time.seconds & 0xf0) >> 4); break; case 4: - mtc_msg[1] = 0x40 | (transmitting_smpte_time.minutes & 0xf); + mtc_msg[1] = 0x40 | (transmitting_timecode_time.minutes & 0xf); break; case 5: - mtc_msg[1] = 0x50 | ((transmitting_smpte_time.minutes & 0xf0) >> 4); + mtc_msg[1] = 0x50 | ((transmitting_timecode_time.minutes & 0xf0) >> 4); break; case 6: - mtc_msg[1] = 0x60 | ((mtc_smpte_bits|transmitting_smpte_time.hours) & 0xf); + mtc_msg[1] = 0x60 | ((mtc_timecode_bits | transmitting_timecode_time.hours) & 0xf); break; case 7: - mtc_msg[1] = 0x70 | (((mtc_smpte_bits|transmitting_smpte_time.hours) & 0xf0) >> 4); + mtc_msg[1] = 0x70 | (((mtc_timecode_bits | transmitting_timecode_time.hours) & 0xf0) >> 4); break; - } - - if (_mtc_port->midimsg (mtc_msg, 2)) { - error << string_compose(_("Session: cannot send quarter-frame MTC message (%1)"), strerror (errno)) - << endmsg; - - return -1; - } - - // cout << "smpte = " << transmitting_smpte_time.hours << ":" << transmitting_smpte_time.minutes << ":" << transmitting_smpte_time.seconds << ":" << transmitting_smpte_time.frames << ", qfm = " << next_quarter_frame_to_send << endl; - - // Increment quarter frame counter - next_quarter_frame_to_send++; - - if (next_quarter_frame_to_send >= 8) { - // Wrap quarter frame counter - next_quarter_frame_to_send = 0; - // Increment smpte time twice - SMPTE::increment( transmitting_smpte_time ); - SMPTE::increment( transmitting_smpte_time ); - // Re-calculate timing of first quarter frame - smpte_to_sample( transmitting_smpte_time, outbound_mtc_smpte_frame, true /* use_offset */, false ); - // Compensate for audio latency - outbound_mtc_smpte_frame += _worst_output_latency; - } } - } - return 0; -} -/*********************************************************************** - OUTBOUND MMC STUFF -**********************************************************************/ + const framepos_t msg_time = rint(outbound_mtc_timecode_frame + (quarter_frame_duration * next_quarter_frame_to_send)); -void -Session::send_mmc_in_another_thread (MIDI::MachineControl::Command cmd, nframes_t target_frame) -{ - MIDIRequest* request; + // This message must fall within this block or something is broken + assert (msg_time >= start_frame); + assert (msg_time < end_frame); - if (_mtc_port == 0 || !session_send_mmc) { - return; - } + /* convert from session frames back to JACK frames using the transport speed */ + pframes_t const out_stamp = (msg_time - start_frame) / _transport_speed; + assert (out_stamp < nframes); - request = new MIDIRequest; - request->type = MIDIRequest::SendMMC; - request->mmc_cmd = cmd; - request->locate_frame = target_frame; + if (MIDI::Manager::instance()->mtc_output_port()->midimsg (mtc_msg, 2, out_stamp)) { + error << string_compose(_("Session: cannot send quarter-frame MTC message (%1)"), strerror (errno)) + << endmsg; + return -1; + } - midi_requests.write (&request, 1); - poke_midi_thread (); -} +#ifndef NDEBUG + DEBUG_STR_DECL(foo) + DEBUG_STR_APPEND(foo,"sending "); + DEBUG_STR_APPEND(foo, transmitting_timecode_time); + DEBUG_TRACE (DEBUG::MTC, string_compose ("%1 qfm = %2, stamp = %3\n", DEBUG_STR(foo).str(), next_quarter_frame_to_send, + out_stamp)); +#endif -void -Session::deliver_mmc (MIDI::MachineControl::Command cmd, nframes_t where) -{ - using namespace MIDI; - int nbytes = 4; - SMPTE::Time smpte; + // Increment quarter frame counter + next_quarter_frame_to_send++; - if (_mmc_port == 0 || !session_send_mmc) { - return; + if (next_quarter_frame_to_send >= 8) { + // Wrap quarter frame counter + next_quarter_frame_to_send = 0; + // Increment timecode time twice + Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame()); + Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame()); + // Re-calculate timing of first quarter frame + //timecode_to_sample( transmitting_timecode_time, outbound_mtc_timecode_frame, true /* use_offset */, false ); + outbound_mtc_timecode_frame += 2.0 * _frames_per_timecode_frame; + } } - mmc_buffer[nbytes++] = cmd; - - // cerr << "delivering MMC, cmd = " << hex << (int) cmd << dec << endl; - - switch (cmd) { - case MachineControl::cmdLocate: - smpte_time_subframes (where, smpte); - - mmc_buffer[nbytes++] = 0x6; // byte count - mmc_buffer[nbytes++] = 0x1; // "TARGET" subcommand - mmc_buffer[nbytes++] = smpte.hours; - mmc_buffer[nbytes++] = smpte.minutes; - mmc_buffer[nbytes++] = smpte.seconds; - mmc_buffer[nbytes++] = smpte.frames; - mmc_buffer[nbytes++] = smpte.subframes; - break; - - case MachineControl::cmdStop: - break; - - case MachineControl::cmdPlay: - /* always convert Play into Deferred Play */ - mmc_buffer[4] = MachineControl::cmdDeferredPlay; - break; - - case MachineControl::cmdDeferredPlay: - break; - - case MachineControl::cmdRecordStrobe: - break; - - case MachineControl::cmdRecordExit: - break; - - case MachineControl::cmdRecordPause: - break; - - default: - nbytes = 0; - }; - - if (nbytes) { - - mmc_buffer[nbytes++] = 0xf7; // terminate SysEx/MMC message + return 0; +} - Glib::Mutex::Lock lm (midi_lock); +/*********************************************************************** + OUTBOUND MMC STUFF +**********************************************************************/ - if (_mmc_port->write (mmc_buffer, nbytes) != nbytes) { - error << string_compose(_("MMC: cannot send command %1%2%3"), &hex, cmd, &dec) << endmsg; - } - } -} bool Session::mmc_step_timeout () @@ -998,352 +577,28 @@ Session::mmc_step_timeout () /* slow it down */ - request_transport_speed (_transport_speed * 0.75); + request_transport_speed_nonzero (_transport_speed * 0.75); return true; } +/*********************************************************************** + OUTBOUND SYSTEM COMMON STUFF +**********************************************************************/ -void -Session::send_midi_message (MIDI::Port * port, MIDI::eventType ev, MIDI::channel_t ch, MIDI::EventTwoBytes data) -{ - // in another thread, really - - MIDIRequest* request = new MIDIRequest; - - request->type = MIDIRequest::SendMessage; - request->port = port; - request->ev = ev; - request->chan = ch; - request->data = data; - - midi_requests.write (&request, 1); - poke_midi_thread (); -} - -void -Session::deliver_midi (MIDI::Port * port, MIDI::byte* buf, int32_t bufsize) -{ - // in another thread, really - - MIDIRequest* request = new MIDIRequest; - - request->type = MIDIRequest::Deliver; - request->port = port; - request->buf = buf; - request->size = bufsize; - - midi_requests.write (&request, 1); - poke_midi_thread (); -} - -void -Session::deliver_midi_message (MIDI::Port * port, MIDI::eventType ev, MIDI::channel_t ch, MIDI::EventTwoBytes data) -{ - if (port == 0 || ev == MIDI::none) { - return; - } - - midi_msg[0] = (ev & 0xF0) | (ch & 0xF); - midi_msg[1] = data.controller_number; - midi_msg[2] = data.value; - - port->write (midi_msg, 3); -} void -Session::deliver_data (MIDI::Port * port, MIDI::byte* buf, int32_t size) +Session::send_song_position_pointer (framepos_t t) { - if (port) { - port->write (buf, size); + if (midi_clock) { + midi_clock->position_changed (t); } - - /* this is part of the semantics of the Deliver request */ - - delete [] buf; } -/*--------------------------------------------------------------------------- - MIDI THREAD - ---------------------------------------------------------------------------*/ - int Session::start_midi_thread () { - if (pipe (midi_request_pipe)) { - error << string_compose(_("Cannot create transport request signal pipe (%1)"), strerror (errno)) << endmsg; - return -1; - } - - if (fcntl (midi_request_pipe[0], F_SETFL, O_NONBLOCK)) { - error << string_compose(_("UI: cannot set O_NONBLOCK on " "signal read pipe (%1)"), strerror (errno)) << endmsg; - return -1; - } - - if (fcntl (midi_request_pipe[1], F_SETFL, O_NONBLOCK)) { - error << string_compose(_("UI: cannot set O_NONBLOCK on " "signal write pipe (%1)"), strerror (errno)) << endmsg; - return -1; - } - - if (pthread_create_and_store ("transport", &midi_thread, 0, _midi_thread_work, this)) { - error << _("Session: could not create transport thread") << endmsg; - return -1; - } - - // pthread_detach (midi_thread); - - return 0; -} - -void -Session::terminate_midi_thread () -{ - MIDIRequest* request = new MIDIRequest; - void* status; - - request->type = MIDIRequest::Quit; - - midi_requests.write (&request, 1); - poke_midi_thread (); - - pthread_join (midi_thread, &status); -} - -void -Session::poke_midi_thread () -{ - char c; - - if (write (midi_request_pipe[1], &c, 1) != 1) { - error << string_compose(_("cannot send signal to midi thread! (%1)"), strerror (errno)) << endmsg; - } -} - -void * -Session::_midi_thread_work (void* arg) -{ - pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, 0); - pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0); - - ((Session *) arg)->midi_thread_work (); + midi_control_ui = new MidiControlUI (*this); + midi_control_ui->run (); return 0; } -void -Session::midi_thread_work () -{ - MIDIRequest* request; - struct pollfd pfd[4]; - int nfds = 0; - int timeout; - int fds_ready; - struct sched_param rtparam; - int x; - bool restart; - vector ports; - - PBD::ThreadCreatedWithRequestSize (pthread_self(), X_("MIDI"), 2048); - - memset (&rtparam, 0, sizeof (rtparam)); - rtparam.sched_priority = 9; /* XXX should be relative to audio (JACK) thread */ - - if ((x = pthread_setschedparam (pthread_self(), SCHED_FIFO, &rtparam)) != 0) { - // do we care? not particularly. - } - - /* set up the port vector; 4 is the largest possible size for now */ - - ports.push_back (0); - ports.push_back (0); - ports.push_back (0); - ports.push_back (0); - - while (1) { - - nfds = 0; - - pfd[nfds].fd = midi_request_pipe[0]; - pfd[nfds].events = POLLIN|POLLHUP|POLLERR; - nfds++; - - /* if we are using MMC control, we obviously have to listen - on the appropriate port. - */ - - if (Config->get_mmc_control() && _mmc_port && _mmc_port->selectable() >= 0) { - pfd[nfds].fd = _mmc_port->selectable(); - pfd[nfds].events = POLLIN|POLLHUP|POLLERR; - ports[nfds] = _mmc_port; - nfds++; - } - - /* if MTC is being handled on a different port from MMC - or we are not handling MMC at all, poll - the relevant port. - */ - - if (_mtc_port && (_mtc_port != _mmc_port || !Config->get_mmc_control()) && _mtc_port->selectable() >= 0) { - pfd[nfds].fd = _mtc_port->selectable(); - pfd[nfds].events = POLLIN|POLLHUP|POLLERR; - ports[nfds] = _mtc_port; - nfds++; - } - - if (_midi_port && (_midi_port != _mmc_port || !Config->get_mmc_control()) && (_midi_port != _mtc_port) && _midi_port->selectable() >= 0) { - pfd[nfds].fd = _midi_port->selectable(); - pfd[nfds].events = POLLIN|POLLHUP|POLLERR; - ports[nfds] = _midi_port; - nfds++; - } - - if (!midi_timeouts.empty()) { - timeout = 100; /* 10msecs */ - } else { - timeout = -1; /* if there is no data, we don't care */ - } - - again: - // cerr << "MIDI poll on " << nfds << " for " << timeout << endl; - if (poll (pfd, nfds, timeout) < 0) { - if (errno == EINTR) { - /* gdb at work, perhaps */ - goto again; - } - - error << string_compose(_("MIDI thread poll failed (%1)"), strerror (errno)) << endmsg; - - break; - } - // cerr << "MIDI thread wakes at " << get_cycles () << endl; - - fds_ready = 0; - restart = false; - - /* check the transport request pipe */ - - if (pfd[0].revents & ~POLLIN) { - error << _("Error on transport thread request pipe") << endmsg; - break; - } - - if (pfd[0].revents & POLLIN) { - - char foo[16]; - - // cerr << "MIDI request FIFO ready\n"; - fds_ready++; - - /* empty the pipe of all current requests */ - - while (1) { - size_t nread = read (midi_request_pipe[0], &foo, sizeof (foo)); - - if (nread > 0) { - if ((size_t) nread < sizeof (foo)) { - break; - } else { - continue; - } - } else if (nread == 0) { - break; - } else if (errno == EAGAIN) { - break; - } else { - fatal << _("Error reading from transport request pipe") << endmsg; - /*NOTREACHED*/ - } - } - - while (midi_requests.read (&request, 1) == 1) { - - switch (request->type) { - - case MIDIRequest::SendFullMTC: - // cerr << "send full MTC\n"; - send_full_time_code (); - // cerr << "... done\n"; - break; - - case MIDIRequest::SendMTC: - // cerr << "send qtr MTC\n"; - send_midi_time_code (); - // cerr << "... done\n"; - break; - - case MIDIRequest::SendMMC: - // cerr << "send MMC\n"; - deliver_mmc (request->mmc_cmd, request->locate_frame); - // cerr << "... done\n"; - break; - - case MIDIRequest::SendMessage: - // cerr << "send Message\n"; - deliver_midi_message (request->port, request->ev, request->chan, request->data); - // cerr << "... done\n"; - break; - - case MIDIRequest::Deliver: - // cerr << "deliver\n"; - deliver_data (_midi_port, request->buf, request->size); - // cerr << "... done\n"; - break; - - case MIDIRequest::PortChange: - /* restart poll with new ports */ - // cerr << "rebind\n"; - restart = true; - break; - - case MIDIRequest::Quit: - delete request; - pthread_exit_pbd (0); - /*NOTREACHED*/ - break; - - default: - break; - } - - - delete request; - } - - } - - if (restart) { - continue; - } - - /* now read the rest of the ports */ - - for (int p = 1; p < nfds; ++p) { - if ((pfd[p].revents & ~POLLIN)) { - // error << string_compose(_("Transport: error polling MIDI port %1 (revents =%2%3%4"), p, &hex, pfd[p].revents, &dec) << endmsg; - break; - } - - if (pfd[p].revents & POLLIN) { - fds_ready++; - midi_read (ports[p]); - } - } - - /* timeout driven */ - - if (fds_ready < 2 && timeout != -1) { - - for (MidiTimeoutList::iterator i = midi_timeouts.begin(); i != midi_timeouts.end(); ) { - - MidiTimeoutList::iterator tmp; - tmp = i; - ++tmp; - - if (!(*i)()) { - midi_timeouts.erase (i); - } - - i = tmp; - } - } - } -} -