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"
38 #include "pbd/stateful_diff_command.h"
39 #include "pbd/stacktrace.h"
41 #include "ardour/ardour.h"
42 #include "ardour/audioengine.h"
43 #include "ardour/butler.h"
44 #include "ardour/configuration.h"
45 #include "ardour/cycle_timer.h"
46 #include "ardour/debug.h"
47 #include "ardour/io.h"
48 #include "ardour/midi_diskstream.h"
49 #include "ardour/midi_playlist.h"
50 #include "ardour/midi_port.h"
51 #include "ardour/midi_region.h"
52 #include "ardour/playlist_factory.h"
53 #include "ardour/region_factory.h"
54 #include "ardour/send.h"
55 #include "ardour/session.h"
56 #include "ardour/smf_source.h"
57 #include "ardour/utils.h"
58 #include "ardour/session_playlists.h"
59 #include "ardour/route.h"
61 #include "midi++/types.h"
67 using namespace ARDOUR;
70 nframes_t MidiDiskstream::midi_readahead = 4096;
72 MidiDiskstream::MidiDiskstream (Session &sess, const string &name, Diskstream::Flag flag)
73 : Diskstream(sess, name, flag)
77 , _last_flush_frame(0)
78 , _note_mode(Sustained)
79 , _frames_written_to_ringbuffer(0)
80 , _frames_read_from_ringbuffer(0)
82 /* prevent any write sources from being created */
88 use_new_write_source (0);
92 assert(!destructive());
95 MidiDiskstream::MidiDiskstream (Session& sess, const XMLNode& node)
96 : Diskstream(sess, node)
100 , _last_flush_frame(0)
101 , _note_mode(Sustained)
102 , _frames_written_to_ringbuffer(0)
103 , _frames_read_from_ringbuffer(0)
109 if (set_state (node, Stateful::loading_state_version)) {
110 in_set_state = false;
111 throw failed_constructor();
114 use_new_write_source (0);
116 in_set_state = false;
120 MidiDiskstream::init ()
122 /* there are no channels at this point, so these
123 two calls just get speed_buffer_size and wrap_buffer
124 size setup without duplicating their code.
127 set_block_size (_session.get_block_size());
128 allocate_temporary_buffers ();
130 const size_t size = _session.butler()->midi_diskstream_buffer_size();
131 _playback_buf = new MidiRingBuffer<nframes_t>(size);
132 _capture_buf = new MidiRingBuffer<nframes_t>(size);
134 _n_channels = ChanCount(DataType::MIDI, 1);
136 assert(recordable());
139 MidiDiskstream::~MidiDiskstream ()
141 Glib::Mutex::Lock lm (state_lock);
146 MidiDiskstream::non_realtime_locate (nframes_t position)
149 _write_source->set_timeline_position (position);
151 seek(position, false);
156 MidiDiskstream::non_realtime_input_change ()
159 Glib::Mutex::Lock lm (state_lock);
161 if (input_change_pending == NoChange) {
165 if (input_change_pending & ConfigurationChanged) {
166 if (_io->n_ports().n_midi() != _n_channels.n_midi()) {
167 error << "Can not feed IO " << _io->n_ports()
168 << " with diskstream " << _n_channels << endl;
172 get_input_sources ();
173 set_capture_offset ();
175 if (first_input_change) {
176 set_align_style (_persistent_alignment_style);
177 first_input_change = false;
179 set_align_style_from_io ();
182 input_change_pending = NoChange;
184 /* implicit unlock */
187 /* unlike with audio, there is never any need to reset write sources
188 based on input configuration changes because ... a MIDI track
189 has just 1 MIDI port as input, always.
192 /* now refill channel buffers */
194 if (speed() != 1.0f || speed() != -1.0f) {
195 seek ((nframes_t) (_session.transport_frame() * (double) speed()));
198 seek (_session.transport_frame());
201 _last_flush_frame = _session.transport_frame();
205 MidiDiskstream::get_input_sources ()
207 uint32_t ni = _io->n_ports().n_midi();
213 // This is all we do for now at least
216 _source_port = _io->midi(0);
222 MidiDiskstream::find_and_use_playlist (const string& name)
224 boost::shared_ptr<MidiPlaylist> playlist;
226 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (_session.playlists->by_name (name))) == 0) {
227 playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (DataType::MIDI, _session, name));
231 error << string_compose(_("MidiDiskstream: Playlist \"%1\" isn't an midi playlist"), name) << endmsg;
235 return use_playlist (playlist);
239 MidiDiskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
241 assert(boost::dynamic_pointer_cast<MidiPlaylist>(playlist));
243 Diskstream::use_playlist(playlist);
249 MidiDiskstream::use_new_playlist ()
252 boost::shared_ptr<MidiPlaylist> playlist;
254 if (!in_set_state && destructive()) {
259 newname = Playlist::bump_name (_playlist->name(), _session);
261 newname = Playlist::bump_name (_name, _session);
264 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (
265 DataType::MIDI, _session, newname, hidden()))) != 0) {
267 playlist->set_orig_diskstream_id (id());
268 return use_playlist (playlist);
276 MidiDiskstream::use_copy_playlist ()
278 assert(midi_playlist());
284 if (_playlist == 0) {
285 error << string_compose(_("MidiDiskstream %1: there is no existing playlist to make a copy of!"), _name) << endmsg;
290 boost::shared_ptr<MidiPlaylist> playlist;
292 newname = Playlist::bump_name (_playlist->name(), _session);
294 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist>(PlaylistFactory::create (midi_playlist(), newname))) != 0) {
295 playlist->set_orig_diskstream_id (id());
296 return use_playlist (playlist);
302 /** Overloaded from parent to die horribly
305 MidiDiskstream::set_destructive (bool yn)
307 assert( ! destructive());
313 MidiDiskstream::set_note_mode (NoteMode m)
316 midi_playlist()->set_note_mode(m);
317 if (_write_source && _write_source->model())
318 _write_source->model()->set_note_mode(m);
323 trace_midi (ostream& o, MIDI::byte *msg, size_t len)
325 using namespace MIDI;
327 const char trace_prefix = ':';
329 type = (eventType) (msg[0]&0xF0);
336 << " NoteOff NoteNum "
347 << " NoteOn NoteNum "
363 case MIDI::controller:
378 << " Program Change ProgNum "
387 << " Channel Pressure "
392 case MIDI::pitchbend:
397 << ((msg[2]<<7)|msg[1])
436 << "System Exclusive (1 byte : " << hex << (int) *msg << dec << ')'
442 << "System Exclusive (" << len << ") = [ " << hex;
443 for (unsigned int i = 0; i < len; ++i) {
444 o << (int) msg[i] << ' ';
446 o << dec << ']' << endl;
452 o << trace_prefix << "Song" << endl;
456 o << trace_prefix << "Tune" << endl;
460 o << trace_prefix << "End-of-System Exclusive" << endl;
464 o << trace_prefix << "Timing" << endl;
468 o << trace_prefix << "Start" << endl;
472 o << trace_prefix << "Stop" << endl;
476 o << trace_prefix << "Continue" << endl;
480 o << trace_prefix << "Active Sense" << endl;
484 o << trace_prefix << "Unrecognized MIDI message" << endl;
491 MidiDiskstream::process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input, bool& need_butler)
494 nframes_t rec_offset = 0;
495 nframes_t rec_nframes = 0;
496 bool nominally_recording;
497 bool re = record_enabled ();
499 playback_distance = 0;
501 check_record_status (transport_frame, nframes, can_record);
503 nominally_recording = (can_record && re);
509 Glib::Mutex::Lock sm (state_lock, Glib::TRY_LOCK);
515 adjust_capture_position = 0;
517 if (nominally_recording || (_session.get_record_enabled() && _session.config.get_punch_in())) {
518 OverlapType ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
520 calculate_record_range(ot, transport_frame, nframes, rec_nframes, rec_offset);
522 if (rec_nframes && !was_recording) {
523 capture_captured = 0;
524 was_recording = true;
529 if (can_record && !_last_capture_sources.empty()) {
530 _last_capture_sources.clear ();
533 if (nominally_recording || rec_nframes) {
535 // Pump entire port buffer into the ring buffer (FIXME: split cycles?)
536 MidiBuffer& buf = _source_port->get_midi_buffer(nframes);
537 for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
538 const Evoral::MIDIEvent<MidiBuffer::TimeType> ev(*i, false);
540 _capture_buf->write(ev.time() + transport_frame, ev.type(), ev.size(), ev.buffer());
546 finish_capture (rec_monitors_input);
553 /* data will be written to disk */
555 if (rec_nframes == nframes && rec_offset == 0) {
556 playback_distance = nframes;
559 adjust_capture_position = rec_nframes;
561 } else if (nominally_recording) {
563 /* XXXX do this for MIDI !!!
564 can't do actual capture yet - waiting for latency effects to finish before we start
567 playback_distance = nframes;
573 if (commit (nframes)) {
581 MidiDiskstream::commit (nframes_t nframes)
583 bool need_butler = false;
585 if (_actual_speed < 0.0) {
586 playback_sample -= playback_distance;
588 playback_sample += playback_distance;
591 if (adjust_capture_position != 0) {
592 capture_captured += adjust_capture_position;
593 adjust_capture_position = 0;
596 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
597 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
598 if ((frames_written - frames_read) + nframes < midi_readahead) {
602 /*cerr << "MDS written: " << frames_written << " - read: " << frames_read <<
603 " = " << frames_written - frames_read
604 << " + " << nframes << " < " << midi_readahead << " = " << need_butler << ")" << endl;*/
610 MidiDiskstream::set_pending_overwrite (bool yn)
612 /* called from audio thread, so we can use the read ptr and playback sample as we wish */
614 _pending_overwrite = yn;
616 overwrite_frame = playback_sample;
620 MidiDiskstream::overwrite_existing_buffers ()
622 //read(overwrite_frame, disk_io_chunk_frames, false);
623 overwrite_queued = false;
624 _pending_overwrite = false;
630 MidiDiskstream::seek (nframes_t frame, bool complete_refill)
632 Glib::Mutex::Lock lm (state_lock);
635 _playback_buf->reset();
636 _capture_buf->reset();
637 g_atomic_int_set(&_frames_read_from_ringbuffer, 0);
638 g_atomic_int_set(&_frames_written_to_ringbuffer, 0);
640 playback_sample = frame;
643 if (complete_refill) {
644 while ((ret = do_refill_with_alloc ()) > 0) ;
646 ret = do_refill_with_alloc ();
653 MidiDiskstream::can_internal_playback_seek (nframes_t distance)
655 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
656 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
657 return ((frames_written - frames_read) < distance);
661 MidiDiskstream::internal_playback_seek (nframes_t distance)
663 first_recordable_frame += distance;
664 playback_sample += distance;
669 /** @a start is set to the new frame position (TIME) read up to */
671 MidiDiskstream::read (nframes_t& start, nframes_t dur, bool reversed)
673 nframes_t this_read = 0;
675 nframes_t loop_end = 0;
676 nframes_t loop_start = 0;
681 nframes_t loop_length = 0;
683 /* Make the use of a Location atomic for this read operation.
685 Note: Locations don't get deleted, so all we care about
686 when I say "atomic" is that we are always pointing to
687 the same one and using a start/length values obtained
691 if ((loc = loop_location) != 0) {
692 loop_start = loc->start();
693 loop_end = loc->end();
694 loop_length = loop_end - loop_start;
697 /* if we are looping, ensure that the first frame we read is at the correct
698 position within the loop.
701 if (loc && (start >= loop_end)) {
702 //cerr << "start adjusted from " << start;
703 start = loop_start + ((start - loop_start) % loop_length);
704 //cerr << "to " << start << endl;
706 //cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl;
711 /* take any loop into account. we can't read past the end of the loop. */
713 if (loc && (loop_end - start < dur)) {
714 this_read = loop_end - start;
715 //cerr << "reloop true: thisread: " << this_read << " dur: " << dur << endl;
722 if (this_read == 0) {
726 this_read = min(dur,this_read);
728 if (midi_playlist()->read (*_playback_buf, start, this_read) != this_read) {
729 error << string_compose(
730 _("MidiDiskstream %1: cannot read %2 from playlist at frame %3"),
731 _id, this_read, start) << endmsg;
735 g_atomic_int_add(&_frames_written_to_ringbuffer, this_read);
737 _read_data_count = _playlist->read_data_count();
741 // Swap note ons with note offs here. etc?
742 // Fully reversing MIDI requires look-ahead (well, behind) to find previous
743 // CC values etc. hard.
747 /* if we read to the end of the loop, go back to the beginning */
750 // Synthesize LoopEvent here, because the next events
751 // written will have non-monotonic timestamps.
752 _playback_buf->write(loop_end - 1, LoopEventType, 0, 0);
753 cout << "Pushing LoopEvent ts=" << loop_end-1
754 << " start+this_read " << start+this_read << endl;
763 //offset += this_read;
770 MidiDiskstream::do_refill_with_alloc ()
776 MidiDiskstream::do_refill ()
779 size_t write_space = _playback_buf->write_space();
780 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
782 if (write_space == 0) {
790 /* at end: nothing to do */
791 if (file_frame == max_frames) {
795 // At this point we...
796 assert(_playback_buf->write_space() > 0); // ... have something to write to, and
797 assert(file_frame <= max_frames); // ... something to write
799 // now calculate how much time is in the ringbuffer.
800 // and lets write as much as we need to get this to be midi_readahead;
801 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
802 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
803 if ((frames_written - frames_read) >= midi_readahead) {
804 //cout << "MDS Nothing to do. all fine" << endl;
808 nframes_t to_read = midi_readahead - (frames_written - frames_read);
810 //cout << "MDS read for midi_readahead " << to_read << " rb_contains: "
811 // << frames_written - frames_read << endl;
813 to_read = min(to_read, (max_frames - file_frame));
815 if (read (file_frame, to_read, reversed)) {
822 /** Flush pending data to disk.
824 * Important note: this function will write *AT MOST* disk_io_chunk_frames
825 * of data to disk. it will never write more than that. If it writes that
826 * much and there is more than that waiting to be written, it will return 1,
827 * otherwise 0 on success or -1 on failure.
829 * If there is less than disk_io_chunk_frames to be written, no data will be
830 * written at all unless @a force_flush is true.
833 MidiDiskstream::do_flush (RunContext /*context*/, bool force_flush)
839 _write_data_count = 0;
841 total = _session.transport_frame() - _last_flush_frame;
843 if (_last_flush_frame > _session.transport_frame()
844 || _last_flush_frame < capture_start_frame) {
845 _last_flush_frame = _session.transport_frame();
848 if (total == 0 || _capture_buf->read_space() == 0
849 || (!force_flush && (total < disk_io_chunk_frames && was_recording))) {
853 /* if there are 2+ chunks of disk i/o possible for
854 this track, let the caller know so that it can arrange
855 for us to be called again, ASAP.
857 if we are forcing a flush, then if there is* any* extra
858 work, let the caller know.
860 if we are no longer recording and there is any extra work,
861 let the caller know too.
864 if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) {
868 to_write = disk_io_chunk_frames;
870 assert(!destructive());
872 if (record_enabled() &&
873 ((_session.transport_frame() - _last_flush_frame > disk_io_chunk_frames) ||
875 if ((!_write_source) || _write_source->midi_write (*_capture_buf, capture_start_frame, to_write) != to_write) {
876 error << string_compose(_("MidiDiskstream %1: cannot write to disk"), _id) << endmsg;
879 _last_flush_frame = _session.transport_frame();
888 MidiDiskstream::transport_stopped_wallclock (struct tm& /*when*/, time_t /*twhen*/, bool abort_capture)
890 bool more_work = true;
892 boost::shared_ptr<MidiRegion> region;
893 MidiRegion::SourceList srcs;
894 MidiRegion::SourceList::iterator src;
895 vector<CaptureInfo*>::iterator ci;
896 bool mark_write_completed = false;
898 finish_capture (true);
900 /* butler is already stopped, but there may be work to do
901 to flush remaining data to disk.
904 while (more_work && !err) {
905 switch (do_flush (TransportContext, true)) {
912 error << string_compose(_("MidiDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
917 /* XXX is there anything we can do if err != 0 ? */
918 Glib::Mutex::Lock lm (capture_info_lock);
920 if (capture_info.empty()) {
928 _write_source->mark_for_remove ();
929 _write_source.reset();
932 /* new source set up in "out" below */
936 assert(_write_source);
938 nframes_t total_capture = 0;
939 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
940 total_capture += (*ci)->frames;
943 if (_write_source->length (capture_info.front()->start) != 0) {
945 /* phew, we have data */
947 /* figure out the name for this take */
949 srcs.push_back (_write_source);
951 _write_source->set_timeline_position (capture_info.front()->start);
952 _write_source->set_captured_for (_name);
954 /* flush to disk: this step differs from the audio path,
955 where all the data is already on disk.
958 _write_source->mark_streaming_write_completed ();
960 /* make it not a stub anymore */
962 _write_source->unstubify ();
964 /* we will want to be able to keep (over)writing the source
965 but we don't want it to be removable. this also differs
966 from the audio situation, where the source at this point
967 must be considered immutable. luckily, we can rely on
968 MidiSource::mark_streaming_write_completed() to have
969 already done the necessary work for that.
972 string whole_file_region_name;
973 whole_file_region_name = region_name_from_path (_write_source->name(), true);
975 /* Register a new region with the Session that
976 describes the entire source. Do this first
977 so that any sub-regions will obviously be
978 children of this one (later!)
984 plist.add (Properties::name, whole_file_region_name);
985 plist.add (Properties::whole_file, true);
986 plist.add (Properties::automatic, true);
987 plist.add (Properties::start, 0);
988 plist.add (Properties::length, total_capture);
989 plist.add (Properties::layer, 0);
991 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
993 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
994 region->special_set_position (capture_info.front()->start);
998 catch (failed_constructor& err) {
999 error << string_compose(_("%1: could not create region for complete midi file"), _name) << endmsg;
1003 _last_capture_sources.insert (_last_capture_sources.end(), srcs.begin(), srcs.end());
1005 _playlist->clear_history ();
1006 _playlist->freeze ();
1008 uint32_t buffer_position = 0;
1009 for (buffer_position = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1013 RegionFactory::region_name (region_name, _write_source->name(), false);
1015 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
1020 plist.add (Properties::start, buffer_position);
1021 plist.add (Properties::length, (*ci)->frames);
1022 plist.add (Properties::name, region_name);
1024 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1025 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1028 catch (failed_constructor& err) {
1029 error << _("MidiDiskstream: could not create region for captured midi!") << endmsg;
1030 continue; /* XXX is this OK? */
1033 // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
1035 i_am_the_modifier++;
1036 _playlist->add_region (region, (*ci)->start);
1037 i_am_the_modifier--;
1039 buffer_position += (*ci)->frames;
1043 _session.add_command (new StatefulDiffCommand(_playlist));
1046 mark_write_completed = true;
1049 use_new_write_source (0);
1051 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1056 midi_playlist()->clear_note_trackers ();
1059 capture_info.clear ();
1060 capture_start_frame = 0;
1064 MidiDiskstream::transport_looped (nframes_t transport_frame)
1066 if (was_recording) {
1068 // adjust the capture length knowing that the data will be recorded to disk
1069 // only necessary after the first loop where we're recording
1070 if (capture_info.size() == 0) {
1071 capture_captured += _capture_offset;
1073 if (_alignment_style == ExistingMaterial) {
1074 capture_captured += _session.worst_output_latency();
1076 capture_captured += _roll_delay;
1080 finish_capture (true);
1082 // the next region will start recording via the normal mechanism
1083 // we'll set the start position to the current transport pos
1084 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1085 capture_start_frame = transport_frame;
1086 first_recordable_frame = transport_frame; // mild lie
1087 last_recordable_frame = max_frames;
1088 was_recording = true;
1093 MidiDiskstream::finish_capture (bool /*rec_monitors_input*/)
1095 was_recording = false;
1097 if (capture_captured == 0) {
1101 // Why must we destroy?
1102 assert(!destructive());
1104 CaptureInfo* ci = new CaptureInfo;
1106 ci->start = capture_start_frame;
1107 ci->frames = capture_captured;
1109 /* XXX theoretical race condition here. Need atomic exchange ?
1110 However, the circumstances when this is called right
1111 now (either on record-disable or transport_stopped)
1112 mean that no actual race exists. I think ...
1113 We now have a capture_info_lock, but it is only to be used
1114 to synchronize in the transport_stop and the capture info
1115 accessors, so that invalidation will not occur (both non-realtime).
1118 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1120 capture_info.push_back (ci);
1121 capture_captured = 0;
1125 MidiDiskstream::set_record_enabled (bool yn)
1127 if (!recordable() || !_session.record_enabling_legal()) {
1131 assert(!destructive());
1133 /* yes, i know that this not proof against race conditions, but its
1134 good enough. i think.
1137 if (record_enabled() != yn) {
1139 engage_record_enable ();
1141 disengage_record_enable ();
1147 MidiDiskstream::engage_record_enable ()
1149 bool rolling = _session.transport_speed() != 0.0f;
1151 g_atomic_int_set (&_record_enabled, 1);
1153 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1154 _source_port->request_monitor_input (!(_session.config.get_auto_input() && rolling));
1157 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1159 RecordEnableChanged (); /* EMIT SIGNAL */
1163 MidiDiskstream::disengage_record_enable ()
1165 g_atomic_int_set (&_record_enabled, 0);
1166 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1168 _source_port->request_monitor_input (false);
1172 RecordEnableChanged (); /* EMIT SIGNAL */
1176 MidiDiskstream::get_state ()
1178 XMLNode* node = new XMLNode ("Diskstream");
1180 LocaleGuard lg (X_("POSIX"));
1182 snprintf (buf, sizeof(buf), "0x%x", _flags);
1183 node->add_property ("flags", buf);
1185 node->add_property("channel-mode", enum_2_string(get_channel_mode()));
1187 snprintf (buf, sizeof(buf), "0x%x", get_channel_mask());
1188 node->add_property("channel-mask", buf);
1190 node->add_property ("playlist", _playlist->name());
1192 snprintf (buf, sizeof(buf), "%f", _visible_speed);
1193 node->add_property ("speed", buf);
1195 node->add_property("name", _name);
1196 id().print(buf, sizeof(buf));
1197 node->add_property("id", buf);
1199 if (_write_source && _session.get_record_enabled()) {
1201 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1202 XMLNode* cs_grandchild;
1204 cs_grandchild = new XMLNode (X_("file"));
1205 cs_grandchild->add_property (X_("path"), _write_source->path());
1206 cs_child->add_child_nocopy (*cs_grandchild);
1208 /* store the location where capture will start */
1212 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1213 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1215 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1218 cs_child->add_property (X_("at"), buf);
1219 node->add_child_nocopy (*cs_child);
1223 node->add_child_copy (*_extra_xml);
1230 MidiDiskstream::set_state (const XMLNode& node, int /*version*/)
1232 const XMLProperty* prop;
1233 XMLNodeList nlist = node.children();
1234 XMLNodeIterator niter;
1235 XMLNode* capture_pending_node = 0;
1236 LocaleGuard lg (X_("POSIX"));
1238 in_set_state = true;
1240 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1241 /*if ((*niter)->name() == IO::state_node_name) {
1242 deprecated_io_node = new XMLNode (**niter);
1244 assert ((*niter)->name() != IO::state_node_name);
1246 if ((*niter)->name() == X_("CapturingSources")) {
1247 capture_pending_node = *niter;
1251 /* prevent write sources from being created */
1253 in_set_state = true;
1255 if ((prop = node.property ("name")) != 0) {
1256 _name = prop->value();
1259 if ((prop = node.property ("id")) != 0) {
1260 _id = prop->value ();
1263 if ((prop = node.property ("flags")) != 0) {
1264 _flags = Flag (string_2_enum (prop->value(), _flags));
1267 ChannelMode channel_mode = AllChannels;
1268 if ((prop = node.property ("channel-mode")) != 0) {
1269 channel_mode = ChannelMode (string_2_enum(prop->value(), channel_mode));
1272 unsigned int channel_mask = 0xFFFF;
1273 if ((prop = node.property ("channel-mask")) != 0) {
1274 sscanf (prop->value().c_str(), "0x%x", &channel_mask);
1275 if (channel_mask & (~0xFFFF)) {
1276 warning << _("MidiDiskstream: XML property channel-mask out of range") << endmsg;
1280 set_channel_mode(channel_mode, channel_mask);
1282 if ((prop = node.property ("playlist")) == 0) {
1287 bool had_playlist = (_playlist != 0);
1289 if (find_and_use_playlist (prop->value())) {
1293 if (!had_playlist) {
1294 _playlist->set_orig_diskstream_id (id());
1297 if (capture_pending_node) {
1298 use_pending_capture_data (*capture_pending_node);
1303 if ((prop = node.property ("speed")) != 0) {
1304 double sp = atof (prop->value().c_str());
1306 if (realtime_set_speed (sp, false)) {
1307 non_realtime_set_speed ();
1311 in_set_state = false;
1317 MidiDiskstream::use_new_write_source (uint32_t n)
1319 if (!_session.writable() || !recordable()) {
1325 _write_source.reset();
1328 /* file starts off as a stub file, it will be converted
1329 when we're done with a capture pass, or when "stolen"
1333 _write_source = boost::dynamic_pointer_cast<SMFSource>(
1334 _session.create_midi_source_for_session (0, name (), true));
1336 if (!_write_source) {
1337 throw failed_constructor();
1341 catch (failed_constructor &err) {
1342 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1343 _write_source.reset();
1347 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1352 list<boost::shared_ptr<Source> >
1353 MidiDiskstream::steal_write_sources()
1355 list<boost::shared_ptr<Source> > ret;
1357 /* put some data on the disk, even if its just a header for an empty file.
1358 XXX should we not have a more direct method for doing this? Maybe not
1359 since we don't want to mess around with the model/disk relationship
1360 that the Source has to pay attention to.
1363 boost::dynamic_pointer_cast<MidiSource>(_write_source)->session_saved ();
1365 /* make it visible/present */
1366 _write_source->unstubify ();
1367 /* never let it go away */
1368 _write_source->mark_nonremovable ();
1370 ret.push_back (_write_source);
1374 use_new_write_source (0);
1380 MidiDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1382 if (!_session.writable() || !recordable()) {
1386 if (_write_source && mark_write_complete) {
1387 _write_source->mark_streaming_write_completed ();
1389 use_new_write_source (0);
1393 MidiDiskstream::rename_write_sources ()
1395 if (_write_source != 0) {
1396 _write_source->set_source_name (_name.val(), destructive());
1397 /* XXX what to do if this fails ? */
1403 MidiDiskstream::set_block_size (nframes_t /*nframes*/)
1408 MidiDiskstream::allocate_temporary_buffers ()
1413 MidiDiskstream::monitor_input (bool yn)
1416 _source_port->ensure_monitor_input (yn);
1420 MidiDiskstream::set_align_style_from_io ()
1422 bool have_physical = false;
1428 get_input_sources ();
1430 if (_source_port && _source_port->flags() & JackPortIsPhysical) {
1431 have_physical = true;
1434 if (have_physical) {
1435 set_align_style (ExistingMaterial);
1437 set_align_style (CaptureTime);
1443 MidiDiskstream::playback_buffer_load () const
1445 return (float) ((double) _playback_buf->read_space()/
1446 (double) _playback_buf->capacity());
1450 MidiDiskstream::capture_buffer_load () const
1452 return (float) ((double) _capture_buf->write_space()/
1453 (double) _capture_buf->capacity());
1457 MidiDiskstream::use_pending_capture_data (XMLNode& /*node*/)
1462 /** Writes playback events in the given range to \a dst, translating time stamps
1463 * so that an event at \a start has time = 0
1466 MidiDiskstream::get_playback (MidiBuffer& dst, nframes_t start, nframes_t end)
1469 assert(dst.size() == 0);
1471 // Reverse. ... We just don't do reverse, ok? Back off.
1476 // Translates stamps to be relative to start
1480 const size_t events_read = _playback_buf->read(dst, start, end);
1481 DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("%1 MDS events read %2 range %3 .. %4 rspace %5 wspace %6\n", _name, events_read, start, end,
1482 _playback_buf->read_space(), _playback_buf->write_space()));
1484 _playback_buf->read(dst, start, end);
1487 gint32 frames_read = end - start;
1488 g_atomic_int_add(&_frames_read_from_ringbuffer, frames_read);