2 Copyright (C) 2000-2003 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
32 #include "pbd/error.h"
33 #include "pbd/basename.h"
34 #include <glibmm/thread.h>
35 #include "pbd/xml++.h"
36 #include "pbd/memento_command.h"
37 #include "pbd/enumwriter.h"
39 #include "ardour/ardour.h"
40 #include "ardour/audioengine.h"
41 #include "ardour/butler.h"
42 #include "ardour/configuration.h"
43 #include "ardour/cycle_timer.h"
44 #include "ardour/debug.h"
45 #include "ardour/io.h"
46 #include "ardour/midi_diskstream.h"
47 #include "ardour/midi_playlist.h"
48 #include "ardour/midi_port.h"
49 #include "ardour/midi_region.h"
50 #include "ardour/playlist_factory.h"
51 #include "ardour/region_factory.h"
52 #include "ardour/send.h"
53 #include "ardour/session.h"
54 #include "ardour/smf_source.h"
55 #include "ardour/utils.h"
56 #include "ardour/session_playlists.h"
58 #include "midi++/types.h"
64 using namespace ARDOUR;
67 nframes_t MidiDiskstream::midi_readahead = 4096;
69 MidiDiskstream::MidiDiskstream (Session &sess, const string &name, Diskstream::Flag flag)
70 : Diskstream(sess, name, flag)
74 , _last_flush_frame(0)
75 , _note_mode(Sustained)
76 , _frames_written_to_ringbuffer(0)
77 , _frames_read_from_ringbuffer(0)
79 /* prevent any write sources from being created */
88 assert(!destructive());
91 MidiDiskstream::MidiDiskstream (Session& sess, const XMLNode& node)
92 : Diskstream(sess, node)
96 , _last_flush_frame(0)
97 , _note_mode(Sustained)
98 , _frames_written_to_ringbuffer(0)
99 , _frames_read_from_ringbuffer(0)
104 if (set_state (node, Stateful::loading_state_version)) {
105 in_set_state = false;
106 throw failed_constructor();
109 in_set_state = false;
112 use_destructive_playlist ();
117 MidiDiskstream::init (Diskstream::Flag f)
121 /* there are no channels at this point, so these
122 two calls just get speed_buffer_size and wrap_buffer
123 size setup without duplicating their code.
126 set_block_size (_session.get_block_size());
127 allocate_temporary_buffers ();
129 const size_t size = _session.butler()->midi_diskstream_buffer_size();
130 _playback_buf = new MidiRingBuffer<nframes_t>(size);
131 _capture_buf = new MidiRingBuffer<nframes_t>(size);
133 _n_channels = ChanCount(DataType::MIDI, 1);
135 assert(recordable());
138 MidiDiskstream::~MidiDiskstream ()
140 Glib::Mutex::Lock lm (state_lock);
145 MidiDiskstream::non_realtime_locate (nframes_t position)
148 _write_source->set_timeline_position (position);
150 seek(position, false);
155 MidiDiskstream::non_realtime_input_change ()
158 Glib::Mutex::Lock lm (state_lock);
160 if (input_change_pending == NoChange) {
164 if (input_change_pending & ConfigurationChanged) {
165 if (_io->n_ports().n_midi() != _n_channels.n_midi()) {
166 error << "Can not feed IO " << _io->n_ports()
167 << " with diskstream " << _n_channels << endl;
171 get_input_sources ();
172 set_capture_offset ();
174 if (first_input_change) {
175 set_align_style (_persistent_alignment_style);
176 first_input_change = false;
178 set_align_style_from_io ();
181 input_change_pending = NoChange;
183 /* implicit unlock */
186 /* reset capture files */
188 reset_write_sources (false);
190 /* now refill channel buffers */
192 if (speed() != 1.0f || speed() != -1.0f) {
193 seek ((nframes_t) (_session.transport_frame() * (double) speed()));
196 seek (_session.transport_frame());
199 _last_flush_frame = _session.transport_frame();
203 MidiDiskstream::get_input_sources ()
205 uint32_t ni = _io->n_ports().n_midi();
211 // This is all we do for now at least
214 _source_port = _io->midi(0);
220 MidiDiskstream::find_and_use_playlist (const string& name)
222 boost::shared_ptr<MidiPlaylist> playlist;
224 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (_session.playlists->by_name (name))) == 0) {
225 playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (DataType::MIDI, _session, name));
229 error << string_compose(_("MidiDiskstream: Playlist \"%1\" isn't an midi playlist"), name) << endmsg;
233 return use_playlist (playlist);
237 MidiDiskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
239 assert(boost::dynamic_pointer_cast<MidiPlaylist>(playlist));
241 Diskstream::use_playlist(playlist);
247 MidiDiskstream::use_new_playlist ()
250 boost::shared_ptr<MidiPlaylist> playlist;
252 if (!in_set_state && destructive()) {
257 newname = Playlist::bump_name (_playlist->name(), _session);
259 newname = Playlist::bump_name (_name, _session);
262 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (
263 DataType::MIDI, _session, newname, hidden()))) != 0) {
265 playlist->set_orig_diskstream_id (id());
266 return use_playlist (playlist);
274 MidiDiskstream::use_copy_playlist ()
276 assert(midi_playlist());
282 if (_playlist == 0) {
283 error << string_compose(_("MidiDiskstream %1: there is no existing playlist to make a copy of!"), _name) << endmsg;
288 boost::shared_ptr<MidiPlaylist> playlist;
290 newname = Playlist::bump_name (_playlist->name(), _session);
292 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist>(PlaylistFactory::create (midi_playlist(), newname))) != 0) {
293 playlist->set_orig_diskstream_id (id());
294 return use_playlist (playlist);
300 /** Overloaded from parent to die horribly
303 MidiDiskstream::set_destructive (bool yn)
305 assert( ! destructive());
311 MidiDiskstream::set_note_mode (NoteMode m)
314 midi_playlist()->set_note_mode(m);
315 if (_write_source && _write_source->model())
316 _write_source->model()->set_note_mode(m);
321 trace_midi (ostream& o, MIDI::byte *msg, size_t len)
323 using namespace MIDI;
325 const char trace_prefix = ':';
327 type = (eventType) (msg[0]&0xF0);
334 << " NoteOff NoteNum "
345 << " NoteOn NoteNum "
361 case MIDI::controller:
376 << " Program Change ProgNum "
385 << " Channel Pressure "
390 case MIDI::pitchbend:
395 << ((msg[2]<<7)|msg[1])
434 << "System Exclusive (1 byte : " << hex << (int) *msg << dec << ')'
440 << "System Exclusive (" << len << ") = [ " << hex;
441 for (unsigned int i = 0; i < len; ++i) {
442 o << (int) msg[i] << ' ';
444 o << dec << ']' << endl;
450 o << trace_prefix << "Song" << endl;
454 o << trace_prefix << "Tune" << endl;
458 o << trace_prefix << "End-of-System Exclusive" << endl;
462 o << trace_prefix << "Timing" << endl;
466 o << trace_prefix << "Start" << endl;
470 o << trace_prefix << "Stop" << endl;
474 o << trace_prefix << "Continue" << endl;
478 o << trace_prefix << "Active Sense" << endl;
482 o << trace_prefix << "Unrecognized MIDI message" << endl;
489 MidiDiskstream::process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input)
492 nframes_t rec_offset = 0;
493 nframes_t rec_nframes = 0;
494 bool nominally_recording;
495 bool re = record_enabled ();
497 /* if we've already processed the frames corresponding to this call,
498 just return. this allows multiple routes that are taking input
499 from this diskstream to call our ::process() method, but have
500 this stuff only happen once. more commonly, it allows both
501 the AudioTrack that is using this AudioDiskstream *and* the Session
502 to call process() without problems.
509 commit_should_unlock = false;
511 check_record_status (transport_frame, nframes, can_record);
513 nominally_recording = (can_record && re);
520 /* This lock is held until the end of ::commit, so these two functions
521 must always be called as a pair. The only exception is if this function
522 returns a non-zero value, in which case, ::commit should not be called.
525 // If we can't take the state lock return.
526 if (!state_lock.trylock()) {
529 commit_should_unlock = true;
530 adjust_capture_position = 0;
532 if (nominally_recording || (_session.get_record_enabled() && _session.config.get_punch_in())) {
533 OverlapType ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
535 calculate_record_range(ot, transport_frame, nframes, rec_nframes, rec_offset);
537 if (rec_nframes && !was_recording) {
538 capture_captured = 0;
539 was_recording = true;
544 if (can_record && !_last_capture_regions.empty()) {
545 _last_capture_regions.clear ();
548 if (nominally_recording || rec_nframes) {
550 // Pump entire port buffer into the ring buffer (FIXME: split cycles?)
551 MidiBuffer& buf = _source_port->get_midi_buffer(nframes);
552 for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
553 const Evoral::MIDIEvent<MidiBuffer::TimeType> ev(*i, false);
555 _capture_buf->write(ev.time() + transport_frame, ev.type(), ev.size(), ev.buffer());
561 finish_capture (rec_monitors_input);
568 /* data will be written to disk */
570 if (rec_nframes == nframes && rec_offset == 0) {
571 playback_distance = nframes;
574 adjust_capture_position = rec_nframes;
576 } else if (nominally_recording) {
578 /* XXXX do this for MIDI !!!
579 can't do actual capture yet - waiting for latency effects to finish before we start
582 playback_distance = nframes;
592 /* we're exiting with failure, so ::commit will not
593 be called. unlock the state lock.
596 commit_should_unlock = false;
604 MidiDiskstream::commit (nframes_t nframes)
606 bool need_butler = false;
608 if (_actual_speed < 0.0) {
609 playback_sample -= playback_distance;
611 playback_sample += playback_distance;
614 if (adjust_capture_position != 0) {
615 capture_captured += adjust_capture_position;
616 adjust_capture_position = 0;
619 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
620 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
621 if ((frames_written - frames_read) + nframes < midi_readahead) {
625 /*cerr << "MDS written: " << frames_written << " - read: " << frames_read <<
626 " = " << frames_written - frames_read
627 << " + " << nframes << " < " << midi_readahead << " = " << need_butler << ")" << endl;*/
629 if (commit_should_unlock) {
639 MidiDiskstream::set_pending_overwrite (bool yn)
641 /* called from audio thread, so we can use the read ptr and playback sample as we wish */
643 pending_overwrite = yn;
645 overwrite_frame = playback_sample;
649 MidiDiskstream::overwrite_existing_buffers ()
651 //read(overwrite_frame, disk_io_chunk_frames, false);
652 overwrite_queued = false;
653 pending_overwrite = false;
659 MidiDiskstream::seek (nframes_t frame, bool complete_refill)
661 Glib::Mutex::Lock lm (state_lock);
664 _playback_buf->reset();
665 _capture_buf->reset();
666 g_atomic_int_set(&_frames_read_from_ringbuffer, 0);
667 g_atomic_int_set(&_frames_written_to_ringbuffer, 0);
669 playback_sample = frame;
672 if (complete_refill) {
673 while ((ret = do_refill_with_alloc ()) > 0) ;
675 ret = do_refill_with_alloc ();
682 MidiDiskstream::can_internal_playback_seek (nframes_t distance)
684 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
685 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
686 return ((frames_written - frames_read) < distance);
690 MidiDiskstream::internal_playback_seek (nframes_t distance)
692 first_recordable_frame += distance;
693 playback_sample += distance;
698 /** @a start is set to the new frame position (TIME) read up to */
700 MidiDiskstream::read (nframes_t& start, nframes_t dur, bool reversed)
702 nframes_t this_read = 0;
704 nframes_t loop_end = 0;
705 nframes_t loop_start = 0;
706 nframes_t loop_length = 0;
710 /* Make the use of a Location atomic for this read operation.
712 Note: Locations don't get deleted, so all we care about
713 when I say "atomic" is that we are always pointing to
714 the same one and using a start/length values obtained
718 if ((loc = loop_location) != 0) {
719 loop_start = loc->start();
720 loop_end = loc->end();
721 loop_length = loop_end - loop_start;
724 /* if we are looping, ensure that the first frame we read is at the correct
725 position within the loop.
728 if (loc && (start >= loop_end)) {
729 //cerr << "start adjusted from " << start;
730 start = loop_start + ((start - loop_start) % loop_length);
731 //cerr << "to " << start << endl;
733 //cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl;
738 /* take any loop into account. we can't read past the end of the loop. */
740 if (loc && (loop_end - start < dur)) {
741 this_read = loop_end - start;
742 //cerr << "reloop true: thisread: " << this_read << " dur: " << dur << endl;
749 if (this_read == 0) {
753 this_read = min(dur,this_read);
755 if (midi_playlist()->read (*_playback_buf, start, this_read) != this_read) {
756 error << string_compose(
757 _("MidiDiskstream %1: cannot read %2 from playlist at frame %3"),
758 _id, this_read, start) << endmsg;
762 g_atomic_int_add(&_frames_written_to_ringbuffer, this_read);
764 _read_data_count = _playlist->read_data_count();
768 // Swap note ons with note offs here. etc?
769 // Fully reversing MIDI requires look-ahead (well, behind) to find previous
770 // CC values etc. hard.
774 /* if we read to the end of the loop, go back to the beginning */
777 // Synthesize LoopEvent here, because the next events
778 // written will have non-monotonic timestamps.
779 _playback_buf->write(loop_end - 1, LoopEventType, 0, 0);
780 cout << "Pushing LoopEvent ts=" << loop_end-1
781 << " start+this_read " << start+this_read << endl;
790 //offset += this_read;
797 MidiDiskstream::do_refill_with_alloc ()
803 MidiDiskstream::do_refill ()
806 size_t write_space = _playback_buf->write_space();
807 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
809 if (write_space == 0) {
817 /* at end: nothing to do */
818 if (file_frame == max_frames) {
822 // At this point we...
823 assert(_playback_buf->write_space() > 0); // ... have something to write to, and
824 assert(file_frame <= max_frames); // ... something to write
826 // now calculate how much time is in the ringbuffer.
827 // and lets write as much as we need to get this to be midi_readahead;
828 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
829 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
830 if ((frames_written - frames_read) >= midi_readahead) {
831 //cout << "MDS Nothing to do. all fine" << endl;
835 nframes_t to_read = midi_readahead - (frames_written - frames_read);
837 //cout << "MDS read for midi_readahead " << to_read << " rb_contains: "
838 // << frames_written - frames_read << endl;
840 to_read = min(to_read, (max_frames - file_frame));
842 if (read (file_frame, to_read, reversed)) {
849 /** Flush pending data to disk.
851 * Important note: this function will write *AT MOST* disk_io_chunk_frames
852 * of data to disk. it will never write more than that. If it writes that
853 * much and there is more than that waiting to be written, it will return 1,
854 * otherwise 0 on success or -1 on failure.
856 * If there is less than disk_io_chunk_frames to be written, no data will be
857 * written at all unless @a force_flush is true.
860 MidiDiskstream::do_flush (RunContext /*context*/, bool force_flush)
866 _write_data_count = 0;
868 total = _session.transport_frame() - _last_flush_frame;
870 if (_last_flush_frame > _session.transport_frame()
871 || _last_flush_frame < capture_start_frame) {
872 _last_flush_frame = _session.transport_frame();
875 if (total == 0 || _capture_buf->read_space() == 0
876 || (!force_flush && (total < disk_io_chunk_frames && was_recording))) {
880 /* if there are 2+ chunks of disk i/o possible for
881 this track, let the caller know so that it can arrange
882 for us to be called again, ASAP.
884 if we are forcing a flush, then if there is* any* extra
885 work, let the caller know.
887 if we are no longer recording and there is any extra work,
888 let the caller know too.
891 if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) {
895 to_write = disk_io_chunk_frames;
897 assert(!destructive());
900 && ( (_session.transport_frame() - _last_flush_frame > disk_io_chunk_frames)
902 if ((!_write_source) || _write_source->midi_write (*_capture_buf, capture_start_frame, to_write) != to_write) {
903 error << string_compose(_("MidiDiskstream %1: cannot write to disk"), _id) << endmsg;
906 _last_flush_frame = _session.transport_frame();
915 MidiDiskstream::transport_stopped (struct tm& /*when*/, time_t /*twhen*/, bool abort_capture)
917 uint32_t buffer_position;
918 bool more_work = true;
920 boost::shared_ptr<MidiRegion> region;
921 nframes_t total_capture;
922 MidiRegion::SourceList srcs;
923 MidiRegion::SourceList::iterator src;
924 vector<CaptureInfo*>::iterator ci;
925 bool mark_write_completed = false;
927 finish_capture (true);
929 /* butler is already stopped, but there may be work to do
930 to flush remaining data to disk.
933 while (more_work && !err) {
934 switch (do_flush (TransportContext, true)) {
941 error << string_compose(_("MidiDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
946 /* XXX is there anything we can do if err != 0 ? */
947 Glib::Mutex::Lock lm (capture_info_lock);
949 if (capture_info.empty()) {
957 _write_source->mark_for_remove ();
958 _write_source->drop_references ();
959 _write_source.reset();
962 /* new source set up in "out" below */
966 assert(_write_source);
968 for (total_capture = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
969 total_capture += (*ci)->frames;
972 /* figure out the name for this take */
974 srcs.push_back (_write_source);
975 _write_source->set_timeline_position (capture_info.front()->start);
976 _write_source->set_captured_for (_name);
978 string whole_file_region_name;
979 whole_file_region_name = region_name_from_path (_write_source->name(), true);
981 /* Register a new region with the Session that
982 describes the entire source. Do this first
983 so that any sub-regions will obviously be
984 children of this one (later!)
988 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, 0,
989 total_capture, whole_file_region_name, 0,
990 Region::Flag (Region::DefaultFlags|Region::Automatic|Region::WholeFile)));
992 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
993 region->special_set_position (capture_info.front()->start);
997 catch (failed_constructor& err) {
998 error << string_compose(_("%1: could not create region for complete midi file"), _name) << endmsg;
1002 _last_capture_regions.push_back (region);
1004 // cerr << _name << ": there are " << capture_info.size() << " capture_info records\n";
1006 XMLNode &before = _playlist->get_state();
1007 _playlist->freeze ();
1009 for (buffer_position = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1013 _session.region_name (region_name, _write_source->name(), false);
1015 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
1018 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, buffer_position, (*ci)->frames, region_name));
1019 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1022 catch (failed_constructor& err) {
1023 error << _("MidiDiskstream: could not create region for captured midi!") << endmsg;
1024 continue; /* XXX is this OK? */
1027 region->DropReferences.connect_same_thread (*this, boost::bind (&Diskstream::remove_region_from_last_capture, this, boost::weak_ptr<Region>(region)));
1029 _last_capture_regions.push_back (region);
1031 // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
1033 i_am_the_modifier++;
1034 _playlist->add_region (region, (*ci)->start);
1035 i_am_the_modifier--;
1037 buffer_position += (*ci)->frames;
1041 XMLNode &after = _playlist->get_state();
1042 _session.add_command (new MementoCommand<Playlist>(*_playlist, &before, &after));
1046 mark_write_completed = true;
1048 reset_write_sources (mark_write_completed);
1050 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1055 midi_playlist()->clear_note_trackers ();
1058 capture_info.clear ();
1059 capture_start_frame = 0;
1063 MidiDiskstream::transport_looped (nframes_t transport_frame)
1065 if (was_recording) {
1067 // adjust the capture length knowing that the data will be recorded to disk
1068 // only necessary after the first loop where we're recording
1069 if (capture_info.size() == 0) {
1070 capture_captured += _capture_offset;
1072 if (_alignment_style == ExistingMaterial) {
1073 capture_captured += _session.worst_output_latency();
1075 capture_captured += _roll_delay;
1079 finish_capture (true);
1081 // the next region will start recording via the normal mechanism
1082 // we'll set the start position to the current transport pos
1083 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1084 capture_start_frame = transport_frame;
1085 first_recordable_frame = transport_frame; // mild lie
1086 last_recordable_frame = max_frames;
1087 was_recording = true;
1092 MidiDiskstream::finish_capture (bool /*rec_monitors_input*/)
1094 was_recording = false;
1096 if (capture_captured == 0) {
1100 // Why must we destroy?
1101 assert(!destructive());
1103 CaptureInfo* ci = new CaptureInfo;
1105 ci->start = capture_start_frame;
1106 ci->frames = capture_captured;
1108 /* XXX theoretical race condition here. Need atomic exchange ?
1109 However, the circumstances when this is called right
1110 now (either on record-disable or transport_stopped)
1111 mean that no actual race exists. I think ...
1112 We now have a capture_info_lock, but it is only to be used
1113 to synchronize in the transport_stop and the capture info
1114 accessors, so that invalidation will not occur (both non-realtime).
1117 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1119 capture_info.push_back (ci);
1120 capture_captured = 0;
1124 MidiDiskstream::set_record_enabled (bool yn)
1126 if (!recordable() || !_session.record_enabling_legal()) {
1130 assert(!destructive());
1132 /* yes, i know that this not proof against race conditions, but its
1133 good enough. i think.
1136 if (record_enabled() != yn) {
1138 engage_record_enable ();
1140 disengage_record_enable ();
1146 MidiDiskstream::engage_record_enable ()
1148 bool rolling = _session.transport_speed() != 0.0f;
1150 g_atomic_int_set (&_record_enabled, 1);
1152 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1153 _source_port->request_monitor_input (!(_session.config.get_auto_input() && rolling));
1156 // FIXME: Why is this necessary? Isn't needed for AudioDiskstream...
1158 use_new_write_source();
1160 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1162 RecordEnableChanged (); /* EMIT SIGNAL */
1166 MidiDiskstream::disengage_record_enable ()
1168 g_atomic_int_set (&_record_enabled, 0);
1169 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1171 _source_port->request_monitor_input (false);
1175 RecordEnableChanged (); /* EMIT SIGNAL */
1179 MidiDiskstream::get_state ()
1181 XMLNode* node = new XMLNode ("MidiDiskstream");
1183 LocaleGuard lg (X_("POSIX"));
1185 snprintf (buf, sizeof(buf), "0x%x", _flags);
1186 node->add_property ("flags", buf);
1188 node->add_property("channel-mode", enum_2_string(get_channel_mode()));
1190 snprintf (buf, sizeof(buf), "0x%x", get_channel_mask());
1191 node->add_property("channel-mask", buf);
1193 node->add_property ("playlist", _playlist->name());
1195 snprintf (buf, sizeof(buf), "%f", _visible_speed);
1196 node->add_property ("speed", buf);
1198 node->add_property("name", _name);
1199 id().print(buf, sizeof(buf));
1200 node->add_property("id", buf);
1202 if (_write_source && _session.get_record_enabled()) {
1204 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1205 XMLNode* cs_grandchild;
1207 cs_grandchild = new XMLNode (X_("file"));
1208 cs_grandchild->add_property (X_("path"), _write_source->path());
1209 cs_child->add_child_nocopy (*cs_grandchild);
1211 /* store the location where capture will start */
1215 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1216 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1218 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1221 cs_child->add_property (X_("at"), buf);
1222 node->add_child_nocopy (*cs_child);
1226 node->add_child_copy (*_extra_xml);
1233 MidiDiskstream::set_state (const XMLNode& node, int /*version*/)
1235 const XMLProperty* prop;
1236 XMLNodeList nlist = node.children();
1237 XMLNodeIterator niter;
1238 uint32_t nchans = 1;
1239 XMLNode* capture_pending_node = 0;
1240 LocaleGuard lg (X_("POSIX"));
1242 in_set_state = true;
1244 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1245 /*if ((*niter)->name() == IO::state_node_name) {
1246 deprecated_io_node = new XMLNode (**niter);
1248 assert ((*niter)->name() != IO::state_node_name);
1250 if ((*niter)->name() == X_("CapturingSources")) {
1251 capture_pending_node = *niter;
1255 /* prevent write sources from being created */
1257 in_set_state = true;
1259 if ((prop = node.property ("name")) != 0) {
1260 _name = prop->value();
1263 if ((prop = node.property ("id")) != 0) {
1264 _id = prop->value ();
1267 if ((prop = node.property ("flags")) != 0) {
1268 _flags = Flag (string_2_enum (prop->value(), _flags));
1271 ChannelMode channel_mode = AllChannels;
1272 if ((prop = node.property ("channel-mode")) != 0) {
1273 channel_mode = ChannelMode (string_2_enum(prop->value(), channel_mode));
1276 unsigned int channel_mask = 0xFFFF;
1277 if ((prop = node.property ("channel-mask")) != 0) {
1278 sscanf (prop->value().c_str(), "0x%x", &channel_mask);
1279 if (channel_mask & (~0xFFFF)) {
1280 warning << _("MidiDiskstream: XML property channel-mask out of range") << endmsg;
1284 set_channel_mode(channel_mode, channel_mask);
1286 if ((prop = node.property ("channels")) != 0) {
1287 nchans = atoi (prop->value().c_str());
1290 if ((prop = node.property ("playlist")) == 0) {
1295 bool had_playlist = (_playlist != 0);
1297 if (find_and_use_playlist (prop->value())) {
1301 if (!had_playlist) {
1302 _playlist->set_orig_diskstream_id (_id);
1305 if (capture_pending_node) {
1306 use_pending_capture_data (*capture_pending_node);
1311 if ((prop = node.property ("speed")) != 0) {
1312 double sp = atof (prop->value().c_str());
1314 if (realtime_set_speed (sp, false)) {
1315 non_realtime_set_speed ();
1319 in_set_state = false;
1321 /* make sure this is clear before we do anything else */
1324 //_capturing_source = 0;
1326 /* write sources are handled when we handle the input set
1327 up of the IO that owns this DS (::non_realtime_input_change())
1330 in_set_state = false;
1336 MidiDiskstream::use_new_write_source (uint32_t n)
1338 if (!recordable()) {
1344 if (_write_source) {
1346 if (_write_source->is_empty ()) {
1347 _write_source->mark_for_remove ();
1348 _write_source.reset();
1350 _write_source.reset();
1355 _write_source = boost::dynamic_pointer_cast<SMFSource>(_session.create_midi_source_for_session (*this));
1356 if (!_write_source) {
1357 throw failed_constructor();
1361 catch (failed_constructor &err) {
1362 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1363 _write_source.reset();
1367 _write_source->set_allow_remove_if_empty (true);
1368 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1374 MidiDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1376 if (!_session.writable() || !recordable()) {
1380 if (_write_source && mark_write_complete) {
1381 _write_source->mark_streaming_write_completed ();
1384 use_new_write_source (0);
1388 MidiDiskstream::rename_write_sources ()
1390 if (_write_source != 0) {
1391 _write_source->set_source_name (_name.get(), destructive());
1392 /* XXX what to do if this fails ? */
1398 MidiDiskstream::set_block_size (nframes_t /*nframes*/)
1403 MidiDiskstream::allocate_temporary_buffers ()
1408 MidiDiskstream::monitor_input (bool yn)
1411 _source_port->ensure_monitor_input (yn);
1415 MidiDiskstream::set_align_style_from_io ()
1417 bool have_physical = false;
1423 get_input_sources ();
1425 if (_source_port && _source_port->flags() & JackPortIsPhysical) {
1426 have_physical = true;
1429 if (have_physical) {
1430 set_align_style (ExistingMaterial);
1432 set_align_style (CaptureTime);
1438 MidiDiskstream::playback_buffer_load () const
1440 return (float) ((double) _playback_buf->read_space()/
1441 (double) _playback_buf->capacity());
1445 MidiDiskstream::capture_buffer_load () const
1447 return (float) ((double) _capture_buf->write_space()/
1448 (double) _capture_buf->capacity());
1452 MidiDiskstream::use_pending_capture_data (XMLNode& /*node*/)
1457 /** Writes playback events in the given range to \a dst, translating time stamps
1458 * so that an event at \a start has time = 0
1461 MidiDiskstream::get_playback (MidiBuffer& dst, nframes_t start, nframes_t end)
1464 assert(dst.size() == 0);
1466 // Reverse. ... We just don't do reverse, ok? Back off.
1471 // Translates stamps to be relative to start
1475 const size_t events_read = _playback_buf->read(dst, start, end);
1476 DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("%1 MDS events read %2 range %3 .. %4 rspace %5 wspace %6\n", _name, events_read, start, end,
1477 _playback_buf->read_space(), _playback_buf->write_space()));
1479 _playback_buf->read(dst, start, end);
1482 gint32 frames_read = end - start;
1483 g_atomic_int_add(&_frames_read_from_ringbuffer, frames_read);