X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fmidi_track.cc;h=1b40cb5f566604df3b2fcf3ebba8f9e990a5f1f1;hb=9ac351e60ceac28056d5513e3c346346689d11e0;hp=6feb3253ce7cd5ae99b56cd89fa73b451a6442cd;hpb=015fc7b39fab97cee1875231694adce43155ceb5;p=ardour.git diff --git a/libs/ardour/midi_track.cc b/libs/ardour/midi_track.cc index 6feb3253ce..1b40cb5f56 100644 --- a/libs/ardour/midi_track.cc +++ b/libs/ardour/midi_track.cc @@ -1,6 +1,6 @@ /* - Copyright (C) 2006 Paul Davis - By Dave Robillard, 2006 + Copyright (C) 2006 Paul Davis + Author: David Robillard 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 @@ -16,28 +16,32 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + #include "pbd/error.h" -#include -#include -#include #include "pbd/enumwriter.h" +#include "pbd/convert.h" #include "midi++/events.h" #include "evoral/midi_util.h" #include "ardour/amp.h" #include "ardour/buffer_set.h" +#include "ardour/debug.h" +#include "ardour/delivery.h" #include "ardour/io_processor.h" #include "ardour/meter.h" #include "ardour/midi_diskstream.h" #include "ardour/midi_playlist.h" +#include "ardour/midi_port.h" #include "ardour/midi_region.h" #include "ardour/midi_source.h" #include "ardour/midi_track.h" #include "ardour/panner.h" +#include "ardour/port.h" #include "ardour/processor.h" #include "ardour/route_group_specialized.h" #include "ardour/session.h" +#include "ardour/session_playlists.h" #include "ardour/utils.h" #include "i18n.h" @@ -49,36 +53,32 @@ using namespace PBD; MidiTrack::MidiTrack (Session& sess, string name, Route::Flag flag, TrackMode mode) : Track (sess, name, flag, mode, DataType::MIDI) , _immediate_events(1024) // FIXME: size? + , _step_edit_ring_buffer(64) // FIXME: size? , _note_mode(Sustained) + , _step_editing (false) + , _midi_thru (true) + , _input_active (true) { - use_new_diskstream (); - - _declickable = true; - _freeze_record.state = NoFreeze; - _saved_meter_point = _meter_point; - _mode = mode; - - set_input_minimum(ChanCount(DataType::MIDI, 1)); - set_input_maximum(ChanCount(DataType::MIDI, 1)); } -MidiTrack::MidiTrack (Session& sess, const XMLNode& node) - : Track (sess, node, DataType::MIDI ) - , _immediate_events(1024) // FIXME: size? - , _note_mode(Sustained) +MidiTrack::~MidiTrack () { - _set_state(node, false); - - set_input_minimum(ChanCount(DataType::MIDI, 1)); - set_input_maximum(ChanCount(DataType::MIDI, 1)); } -MidiTrack::~MidiTrack () +int +MidiTrack::init () { + if (Track::init ()) { + return -1; + } + + _input->changed.connect_same_thread (*this, boost::bind (&MidiTrack::track_input_active, this, _1, _2)); + + return 0; } -void -MidiTrack::use_new_diskstream () +boost::shared_ptr +MidiTrack::create_diskstream () { MidiDiskstream::Flag dflags = MidiDiskstream::Flag (0); @@ -90,54 +90,38 @@ MidiTrack::use_new_diskstream () assert(_mode != Destructive); - boost::shared_ptr ds (new MidiDiskstream (_session, name(), dflags)); - _session.add_diskstream (ds); + return boost::shared_ptr (new MidiDiskstream (_session, name(), dflags)); +} - set_diskstream (boost::dynamic_pointer_cast (ds)); -} -int -MidiTrack::set_diskstream (boost::shared_ptr ds) +void +MidiTrack::set_record_enabled (bool yn, void *src) { - _diskstream = ds; - _diskstream->set_io (*this); - _diskstream->set_destructive (_mode == Destructive); - - _diskstream->set_record_enabled (false); - //_diskstream->monitor_input (false); - - ic_connection.disconnect(); - ic_connection = input_changed.connect (mem_fun (*_diskstream, &MidiDiskstream::handle_input_change)); - - DiskstreamChanged (); /* EMIT SIGNAL */ + if (_step_editing) { + return; + } - return 0; -} + Track::set_record_enabled (yn, src); +} -int -MidiTrack::use_diskstream (string name) +void +MidiTrack::set_diskstream (boost::shared_ptr ds) { - boost::shared_ptr dstream; + Track::set_diskstream (ds); - if ((dstream = boost::dynamic_pointer_cast(_session.diskstream_by_name (name))) == 0) { - error << string_compose(_("MidiTrack: midi diskstream \"%1\" not known by session"), name) << endmsg; - return -1; - } - - return set_diskstream (dstream); -} + midi_diskstream()->reset_tracker (); -int -MidiTrack::use_diskstream (const PBD::ID& id) -{ - boost::shared_ptr dstream; + _diskstream->set_track (this); + _diskstream->set_destructive (_mode == Destructive); + _diskstream->set_record_enabled (false); - if ((dstream = boost::dynamic_pointer_cast (_session.diskstream_by_id (id))) == 0) { - error << string_compose(_("MidiTrack: midi diskstream \"%1\" not known by session"), id) << endmsg; - return -1; - } - - return set_diskstream (dstream); + _diskstream_data_recorded_connection.disconnect (); + boost::shared_ptr mds = boost::dynamic_pointer_cast (ds); + mds->DataRecorded.connect_same_thread ( + _diskstream_data_recorded_connection, + boost::bind (&MidiTrack::diskstream_data_recorded, this, _1)); + + DiskstreamChanged (); /* EMIT SIGNAL */ } boost::shared_ptr @@ -147,82 +131,36 @@ MidiTrack::midi_diskstream() const } int -MidiTrack::set_state (const XMLNode& node) -{ - return _set_state (node, true); -} - -int -MidiTrack::_set_state (const XMLNode& node, bool call_base) +MidiTrack::set_state (const XMLNode& node, int version) { const XMLProperty *prop; - XMLNodeConstIterator iter; - if (Route::_set_state (node, call_base)) { + if (Track::set_state (node, version)) { return -1; } - + // No destructive MIDI tracks (yet?) _mode = Normal; - + if ((prop = node.property (X_("note-mode"))) != 0) { _note_mode = NoteMode (string_2_enum (prop->value(), _note_mode)); } else { _note_mode = Sustained; } - if ((prop = node.property ("diskstream-id")) == 0) { - - /* some old sessions use the diskstream name rather than the ID */ - - if ((prop = node.property ("diskstream")) == 0) { - fatal << _("programming error: MidiTrack given state without diskstream!") << endmsg; - /*NOTREACHED*/ - return -1; - } - - if (use_diskstream (prop->value())) { - return -1; - } - - } else { - - PBD::ID id (prop->value()); - PBD::ID zero ("0"); - - /* this wierd hack is used when creating tracks from a template. there isn't - a particularly good time to interpose between setting the first part of - the track state (notably Route::set_state() and the track mode), and the - second part (diskstream stuff). So, we have a special ID for the diskstream - that means "you should create a new diskstream here, not look for - an old one. - */ - - if (id == zero) { - use_new_diskstream (); - } else if (use_diskstream (id)) { - return -1; - } + if ((prop = node.property ("midi-thru")) != 0) { + set_midi_thru (string_is_affirmative (prop->value())); } - XMLNodeList nlist; - XMLNodeConstIterator niter; - XMLNode *child; - - nlist = node.children(); - for (niter = nlist.begin(); niter != nlist.end(); ++niter){ - child = *niter; - - if (child->name() == X_("recenable")) { - _rec_enable_control->set_state (*child); - _session.add_controllable (_rec_enable_control); - } + if ((prop = node.property ("input-active")) != 0) { + set_input_active (string_is_affirmative (prop->value())); } pending_state = const_cast (&node); if (_session.state_of_the_state() & Session::Loading) { - _session.StateReady.connect (mem_fun (*this, &MidiTrack::set_state_part_two)); + _session.StateReady.connect_same_thread ( + *this, boost::bind (&MidiTrack::set_state_part_two, this)); } else { set_state_part_two (); } @@ -230,10 +168,10 @@ MidiTrack::_set_state (const XMLNode& node, bool call_base) return 0; } -XMLNode& +XMLNode& MidiTrack::state(bool full_state) { - XMLNode& root (Route::state(full_state)); + XMLNode& root (Track::state(full_state)); XMLNode* freeze_node; char buf[64]; @@ -249,32 +187,19 @@ MidiTrack::state(bool full_state) (*i)->id.print (buf, sizeof(buf)); inode->add_property (X_("id"), buf); inode->add_child_copy ((*i)->state); - + freeze_node->add_child_nocopy (*inode); } root.add_child_nocopy (*freeze_node); } - /* Alignment: act as a proxy for the diskstream */ - - XMLNode* align_node = new XMLNode (X_("Alignment")); - AlignStyle as = _diskstream->alignment_style (); - align_node->add_property (X_("style"), enum_2_string (as)); - root.add_child_nocopy (*align_node); - root.add_property (X_("note-mode"), enum_2_string (_note_mode)); - - /* we don't return diskstream state because we don't - own the diskstream exclusively. control of the diskstream - state is ceded to the Session, even if we create the - diskstream. - */ - _diskstream->id().print (buf, sizeof(buf)); - root.add_property ("diskstream-id", buf); - - root.add_child_nocopy (_rec_enable_control->get_state()); + root.add_property ("step-editing", (_step_editing ? "yes" : "no")); + root.add_property ("note-mode", enum_2_string (_note_mode)); + root.add_property ("midi-thru", (_midi_thru ? "yes" : "no")); + root.add_property ("input-active", (_input_active ? "yes" : "no")); return root; } @@ -297,14 +222,14 @@ MidiTrack::set_state_part_two () if ((fnode = find_named_node (*pending_state, X_("freeze-info"))) != 0) { _freeze_record.state = Frozen; - + for (vector::iterator i = _freeze_record.processor_info.begin(); i != _freeze_record.processor_info.end(); ++i) { delete *i; } _freeze_record.processor_info.clear (); - + if ((prop = fnode->property (X_("playlist"))) != 0) { - boost::shared_ptr pl = _session.playlist_by_name (prop->value()); + boost::shared_ptr pl = _session.playlists->by_name (prop->value()); if (pl) { _freeze_record.playlist = boost::dynamic_pointer_cast (pl); } else { @@ -313,23 +238,23 @@ MidiTrack::set_state_part_two () return; } } - + if ((prop = fnode->property (X_("state"))) != 0) { _freeze_record.state = FreezeState (string_2_enum (prop->value(), _freeze_record.state)); } - + XMLNodeConstIterator citer; XMLNodeList clist = fnode->children(); - + for (citer = clist.begin(); citer != clist.end(); ++citer) { if ((*citer)->name() != X_("processor")) { continue; } - + if ((prop = (*citer)->property (X_("id"))) == 0) { continue; } - + FreezeRecordProcessorInfo* frii = new FreezeRecordProcessorInfo (*((*citer)->children().front()), boost::shared_ptr()); frii->id = prop->value (); @@ -337,49 +262,25 @@ MidiTrack::set_state_part_two () } } - /* Alignment: act as a proxy for the diskstream */ - - if ((fnode = find_named_node (*pending_state, X_("Alignment"))) != 0) { - - if ((prop = fnode->property (X_("style"))) != 0) { - - /* fix for older sessions from before EnumWriter */ - - string pstr; - - if (prop->value() == "capture") { - pstr = "CaptureTime"; - } else if (prop->value() == "existing") { - pstr = "ExistingMaterial"; - } else { - pstr = prop->value(); - } - - AlignStyle as = AlignStyle (string_2_enum (pstr, as)); - _diskstream->set_persistent_align_style (as); - } + if (midi_diskstream ()) { + midi_diskstream()->set_block_size (_session.get_block_size ()); } + return; -} +} int -MidiTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, int declick, - bool can_record, bool rec_monitors_input) +MidiTrack::roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame, int declick, bool& need_butler) { - int dret; - boost::shared_ptr diskstream = midi_diskstream(); - - prepare_inputs (nframes); - - { - Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK); - if (lm.locked()) { - // automation snapshot can also be called from the non-rt context - // and it uses the redirect list, so we take the lock out here - automation_snapshot (start_frame); - } + Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK); + if (!lm.locked()) { + return 0; } + boost::shared_ptr diskstream = midi_diskstream(); + + automation_snapshot (start_frame); + if (n_outputs().n_total() == 0 && _processors.empty()) { return 0; } @@ -389,21 +290,25 @@ MidiTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, return 0; } - nframes_t transport_frame = _session.transport_frame(); + framepos_t transport_frame = _session.transport_frame(); + + int dret; + framecnt_t playback_distance; - if ((nframes = check_initial_delay (nframes, transport_frame)) == 0) { /* need to do this so that the diskstream sets its playback distance to zero, thus causing diskstream::commit to do nothing. */ - return diskstream->process (transport_frame, 0, can_record, rec_monitors_input); - } + dret = diskstream->process (transport_frame, 0, playback_distance); + need_butler = diskstream->commit (playback_distance); + return dret; + } _silent = false; - if ((dret = diskstream->process (transport_frame, nframes, can_record, rec_monitors_input)) != 0) { - + if ((dret = diskstream->process (transport_frame, nframes, playback_distance)) != 0) { + need_butler = diskstream->commit (playback_distance); silence (nframes); return dret; } @@ -411,14 +316,14 @@ MidiTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, /* special condition applies */ if (_meter_point == MeterInput) { - just_meter_input (start_frame, end_frame, nframes); + _input->process_input (_meter, start_frame, end_frame, nframes); } - if (diskstream->record_enabled() && !can_record && !_session.config.get_auto_input()) { + if (monitoring_state() == MonitoringInput) { /* not actually recording, but we want to hear the input material anyway, at least potentially (depending on monitoring options) - */ + */ passthru (start_frame, end_frame, nframes, 0); @@ -436,64 +341,164 @@ MidiTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame, //const size_t limit = n_process_buffers().n_audio(); BufferSet& bufs = _session.get_scratch_buffers (n_process_buffers()); + MidiBuffer& mbuf (bufs.get_midi (0)); - diskstream->get_playback(bufs.get_midi(0), start_frame, end_frame); + /* we are a MIDI track, so we always start the chain with a single-channel diskstream */ + ChanCount c; + c.set_audio (0); + c.set_midi (1); + bufs.set_count (c); - process_output_buffers (bufs, start_frame, end_frame, nframes, - (!_session.get_record_enabled() || !Config->get_do_not_record_plugins()), declick); - + diskstream->get_playback (mbuf, nframes); + + /* append immediate messages to the first MIDI buffer (thus sending it to the first output port) */ + + write_out_of_band_data (bufs, start_frame, end_frame, nframes); + + /* final argument: don't waste time with automation if we're recording or we've just stopped (yes it can happen) */ + + process_output_buffers ( + bufs, start_frame, end_frame, nframes, + declick, (!diskstream->record_enabled() && !_session.transport_stopped()) + ); } - flush_outputs (nframes); + for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) { + boost::shared_ptr d = boost::dynamic_pointer_cast (*i); + if (d) { + d->flush_buffers (nframes, end_frame - start_frame - 1); + } + } + need_butler = diskstream->commit (playback_distance); + return 0; } +int +MidiTrack::no_roll (pframes_t nframes, framepos_t start_frame, framepos_t end_frame, bool state_changing) +{ + int ret = Track::no_roll (nframes, start_frame, end_frame, state_changing); + + if (ret == 0 && _step_editing) { + push_midi_input_to_step_edit_ringbuffer (nframes); + } + + return ret; +} + void -MidiTrack::write_controller_messages(MidiBuffer& output_buf, sframes_t start, sframes_t end, nframes_t nframes) +MidiTrack::realtime_locate () { - // Append immediate events (UI controls) + Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK); + + if (!lm.locked ()) { + return; + } - // XXX TAKE _port_offset in Port into account??? + for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) { + (*i)->realtime_locate (); + } - _immediate_events.read (output_buf, 0, 0, nframes - 1); // all stamps = 0 + midi_diskstream()->reset_tracker (); } -int -MidiTrack::export_stuff (BufferSet& bufs, nframes_t nframes, sframes_t end_frame) +void +MidiTrack::realtime_handle_transport_stopped () { - return -1; + Glib::RWLock::ReaderLock lm (_processor_lock, Glib::TRY_LOCK); + + if (!lm.locked ()) { + return; + } + + for (ProcessorList::iterator i = _processors.begin(); i != _processors.end(); ++i) { + (*i)->realtime_handle_transport_stopped (); + } } void -MidiTrack::set_latency_delay (nframes_t longest_session_latency) +MidiTrack::push_midi_input_to_step_edit_ringbuffer (framecnt_t nframes) { - Route::set_latency_delay (longest_session_latency); - _diskstream->set_roll_delay (_roll_delay); + PortSet& ports (_input->ports()); + + for (PortSet::iterator p = ports.begin(DataType::MIDI); p != ports.end(DataType::MIDI); ++p) { + + Buffer& b (p->get_buffer (nframes)); + const MidiBuffer* const mb = dynamic_cast(&b); + assert (mb); + + for (MidiBuffer::const_iterator e = mb->begin(); e != mb->end(); ++e) { + + const Evoral::MIDIEvent ev(*e, false); + + /* note on, since for step edit, note length is determined + elsewhere + */ + + if (ev.is_note_on()) { + /* we don't care about the time for this purpose */ + _step_edit_ring_buffer.write (0, ev.type(), ev.size(), ev.buffer()); + } + } + } +} + +void +MidiTrack::write_out_of_band_data (BufferSet& bufs, framepos_t /*start*/, framepos_t /*end*/, framecnt_t nframes) +{ + MidiBuffer& buf (bufs.get_midi (0)); + + // Append immediate events + + if (_immediate_events.read_space()) { + + DEBUG_TRACE (DEBUG::MidiIO, string_compose ("%1 has %2 of immediate events to deliver\n", + name(), _immediate_events.read_space())); + + /* write as many of the immediate events as we can, but give "true" as + * the last argument ("stop on overflow in destination") so that we'll + * ship the rest out next time. + * + * the (nframes-1) argument puts all these events at the last + * possible position of the output buffer, so that we do not + * violate monotonicity when writing. + */ + + _immediate_events.read (buf, 0, 1, nframes-1, true); + } + + // MIDI thru: send incoming data "through" output + if (_midi_thru && _session.transport_speed() != 0.0f && _input->n_ports().n_midi()) { + buf.merge_in_place (_input->midi(0)->get_midi_buffer(nframes)); + } +} + +int +MidiTrack::export_stuff (BufferSet& /*bufs*/, framecnt_t /*nframes*/, framepos_t /*end_frame*/) +{ + return -1; } boost::shared_ptr -MidiTrack::bounce (InterThreadInfo& itt) +MidiTrack::bounce (InterThreadInfo& /*itt*/) { - throw; - // vector srcs; - // return _session.write_one_track (*this, 0, _session.current_end_frame(), false, srcs, itt); + std::cerr << "MIDI bounce currently unsupported" << std::endl; return boost::shared_ptr (); } boost::shared_ptr -MidiTrack::bounce_range (nframes_t start, nframes_t end, InterThreadInfo& itt, bool enable_processing) +MidiTrack::bounce_range (framepos_t /*start*/, framepos_t /*end*/, InterThreadInfo& /*itt*/, bool /*enable_processing*/) { - throw; - //vector srcs; - //return _session.write_one_track (*this, start, end, false, srcs, itt); + std::cerr << "MIDI bounce range currently unsupported" << std::endl; return boost::shared_ptr (); } void -MidiTrack::freeze (InterThreadInfo& itt) +MidiTrack::freeze_me (InterThreadInfo& /*itt*/) { + std::cerr << "MIDI freeze currently unsupported" << std::endl; } void @@ -511,8 +516,9 @@ MidiTrack::set_note_mode (NoteMode m) } void -MidiTrack::midi_panic() +MidiTrack::midi_panic() { + DEBUG_TRACE (DEBUG::MidiIO, string_compose ("%1 delivers panic data\n", name())); for (uint8_t channel = 0; channel <= 0xF; channel++) { uint8_t ev[3] = { MIDI_CMD_CONTROL | channel, MIDI_CTL_SUSTAIN, 0 }; write_immediate_event(3, ev); @@ -537,7 +543,7 @@ MidiTrack::write_immediate_event(size_t size, const uint8_t* buf) } void -MidiTrack::MidiControl::set_value(float val) +MidiTrack::MidiControl::set_value(double val) { bool valid = false; if (isinf(val)) { @@ -551,15 +557,14 @@ MidiTrack::MidiControl::set_value(float val) } else { valid = true; } - + if (!valid) { return; } assert(val <= _list->parameter().max()); - size_t size = 3; - if ( ! automation_playback()) { + size_t size = 3; uint8_t ev[3] = { _list->parameter().channel(), int(val), 0 }; switch(_list->parameter().type()) { case MidiCCAutomation: @@ -567,25 +572,25 @@ MidiTrack::MidiControl::set_value(float val) ev[1] = _list->parameter().id(); ev[2] = int(val); break; - + case MidiPgmChangeAutomation: size = 2; ev[0] += MIDI_CMD_PGM_CHANGE; ev[1] = int(val); break; - + case MidiChannelPressureAutomation: size = 2; ev[0] += MIDI_CMD_CHANNEL_PRESSURE; ev[1] = int(val); break; - + case MidiPitchBenderAutomation: ev[0] += MIDI_CMD_BENDER; ev[1] = 0x7F & int(val); ev[2] = 0x7F & (int(val) >> 7); break; - + default: assert(false); } @@ -593,5 +598,179 @@ MidiTrack::MidiControl::set_value(float val) } AutomationControl::set_value(val); -} +} + +void +MidiTrack::set_step_editing (bool yn) +{ + if (_session.record_status() != Session::Disabled) { + return; + } + + if (yn != _step_editing) { + _step_editing = yn; + StepEditStatusChange (yn); + } +} + +void +MidiTrack::set_midi_thru (bool yn) +{ + _midi_thru = yn; +} + +boost::shared_ptr +MidiTrack::write_source (uint32_t) +{ + return midi_diskstream()->write_source (); +} + +void +MidiTrack::set_channel_mode (ChannelMode mode, uint16_t mask) +{ + midi_diskstream()->set_channel_mode (mode, mask); +} + +ChannelMode +MidiTrack::get_channel_mode () +{ + return midi_diskstream()->get_channel_mode (); +} + +uint16_t +MidiTrack::get_channel_mask () +{ + return midi_diskstream()->get_channel_mask (); +} + +boost::shared_ptr +MidiTrack::midi_playlist () +{ + return midi_diskstream()->midi_playlist (); +} + +void +MidiTrack::diskstream_data_recorded (boost::weak_ptr src) +{ + DataRecorded (src); /* EMIT SIGNAL */ +} + +bool +MidiTrack::input_active () const +{ + return _input_active; +} + +void +MidiTrack::set_input_active (bool yn) +{ + if (yn != _input_active) { + _input_active = yn; + map_input_active (yn); + InputActiveChanged (); /* EMIT SIGNAL */ + } +} + +void +MidiTrack::map_input_active (bool yn) +{ + if (!_input) { + return; + } + + PortSet& ports (_input->ports()); + + for (PortSet::iterator p = ports.begin(DataType::MIDI); p != ports.end(DataType::MIDI); ++p) { + boost::shared_ptr mp = boost::dynamic_pointer_cast (*p); + if (yn != mp->input_active()) { + mp->set_input_active (yn); + } + } +} + +void +MidiTrack::track_input_active (IOChange change, void* /* src */) +{ + if (change.type & IOChange::ConfigurationChanged) { + map_input_active (_input_active); + } +} + +boost::shared_ptr +MidiTrack::diskstream_factory (XMLNode const & node) +{ + return boost::shared_ptr (new MidiDiskstream (_session, node)); +} + +boost::shared_ptr +MidiTrack::get_gui_feed_buffer () const +{ + return midi_diskstream()->get_gui_feed_buffer (); +} + +void +MidiTrack::act_on_mute () +{ + /* this is called right after our mute status has changed. + if we are now muted, send suitable output to shutdown + all our notes. + + XXX we should should also stop all relevant note trackers. + */ + + if (muted()) { + /* only send messages for channels we are using */ + + uint16_t mask = get_channel_mask(); + for (uint8_t channel = 0; channel <= 0xF; channel++) { + + if ((1< md (midi_diskstream()); + + if (md) { + md->reset_tracker (); + } +} + +MonitorState +MidiTrack::monitoring_state () const +{ + /* Explicit requests */ + + if (_monitoring & MonitorInput) { + return MonitoringInput; + } + + if (_monitoring & MonitorDisk) { + return MonitoringDisk; + } + + if (_session.transport_rolling()) { + return MonitoringDisk; + } + + /* the return value here doesn't mean that we're actually monitoring + * input, let alone input *audio*. but it means that we are NOT + * monitoring silence. this allows us to still hear any audio generated + * by using internal generation techniques + */ + + return MonitoringInput; +}