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/io.h"
45 #include "ardour/midi_diskstream.h"
46 #include "ardour/midi_playlist.h"
47 #include "ardour/midi_port.h"
48 #include "ardour/midi_region.h"
49 #include "ardour/playlist_factory.h"
50 #include "ardour/region_factory.h"
51 #include "ardour/send.h"
52 #include "ardour/session.h"
53 #include "ardour/smf_source.h"
54 #include "ardour/utils.h"
56 #include "midi++/types.h"
62 using namespace ARDOUR;
65 nframes_t MidiDiskstream::midi_readahead = 4096;
67 MidiDiskstream::MidiDiskstream (Session &sess, const string &name, Diskstream::Flag flag)
68 : Diskstream(sess, name, flag)
72 , _last_flush_frame(0)
73 , _note_mode(Sustained)
74 , _frames_written_to_ringbuffer(0)
75 , _frames_read_from_ringbuffer(0)
77 /* prevent any write sources from being created */
86 assert(!destructive());
89 MidiDiskstream::MidiDiskstream (Session& sess, const XMLNode& node)
90 : Diskstream(sess, node)
94 , _last_flush_frame(0)
95 , _note_mode(Sustained)
96 , _frames_written_to_ringbuffer(0)
97 , _frames_read_from_ringbuffer(0)
102 if (set_state (node, Stateful::loading_state_version)) {
103 in_set_state = false;
104 throw failed_constructor();
107 in_set_state = false;
110 use_destructive_playlist ();
115 MidiDiskstream::init (Diskstream::Flag f)
119 /* there are no channels at this point, so these
120 two calls just get speed_buffer_size and wrap_buffer
121 size setup without duplicating their code.
124 set_block_size (_session.get_block_size());
125 allocate_temporary_buffers ();
127 const size_t size = _session.butler()->midi_diskstream_buffer_size();
128 _playback_buf = new MidiRingBuffer<nframes_t>(size);
129 _capture_buf = new MidiRingBuffer<nframes_t>(size);
131 _n_channels = ChanCount(DataType::MIDI, 1);
133 assert(recordable());
136 MidiDiskstream::~MidiDiskstream ()
138 Glib::Mutex::Lock lm (state_lock);
143 MidiDiskstream::non_realtime_locate (nframes_t position)
146 _write_source->set_timeline_position (position);
148 seek(position, false);
153 MidiDiskstream::non_realtime_input_change ()
156 Glib::Mutex::Lock lm (state_lock);
158 if (input_change_pending == NoChange) {
162 if (input_change_pending & ConfigurationChanged) {
163 if (_io->n_ports().n_midi() != _n_channels.n_midi()) {
164 error << "Can not feed IO " << _io->n_ports()
165 << " with diskstream " << _n_channels << endl;
169 get_input_sources ();
170 set_capture_offset ();
172 if (first_input_change) {
173 set_align_style (_persistent_alignment_style);
174 first_input_change = false;
176 set_align_style_from_io ();
179 input_change_pending = NoChange;
181 /* implicit unlock */
184 /* reset capture files */
186 reset_write_sources (false);
188 /* now refill channel buffers */
190 if (speed() != 1.0f || speed() != -1.0f) {
191 seek ((nframes_t) (_session.transport_frame() * (double) speed()));
194 seek (_session.transport_frame());
197 _last_flush_frame = _session.transport_frame();
201 MidiDiskstream::get_input_sources ()
203 uint32_t ni = _io->n_ports().n_midi();
209 // This is all we do for now at least
212 _source_port = _io->midi(0);
218 MidiDiskstream::find_and_use_playlist (const string& name)
220 boost::shared_ptr<MidiPlaylist> playlist;
222 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (_session.playlist_by_name (name))) == 0) {
223 playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (DataType::MIDI, _session, name));
227 error << string_compose(_("MidiDiskstream: Playlist \"%1\" isn't an midi playlist"), name) << endmsg;
231 return use_playlist (playlist);
235 MidiDiskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
237 assert(boost::dynamic_pointer_cast<MidiPlaylist>(playlist));
239 Diskstream::use_playlist(playlist);
245 MidiDiskstream::use_new_playlist ()
248 boost::shared_ptr<MidiPlaylist> playlist;
250 if (!in_set_state && destructive()) {
255 newname = Playlist::bump_name (_playlist->name(), _session);
257 newname = Playlist::bump_name (_name, _session);
260 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (
261 DataType::MIDI, _session, newname, hidden()))) != 0) {
263 playlist->set_orig_diskstream_id (id());
264 return use_playlist (playlist);
272 MidiDiskstream::use_copy_playlist ()
274 assert(midi_playlist());
280 if (_playlist == 0) {
281 error << string_compose(_("MidiDiskstream %1: there is no existing playlist to make a copy of!"), _name) << endmsg;
286 boost::shared_ptr<MidiPlaylist> playlist;
288 newname = Playlist::bump_name (_playlist->name(), _session);
290 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist>(PlaylistFactory::create (midi_playlist(), newname))) != 0) {
291 playlist->set_orig_diskstream_id (id());
292 return use_playlist (playlist);
298 /** Overloaded from parent to die horribly
301 MidiDiskstream::set_destructive (bool yn)
303 assert( ! destructive());
309 MidiDiskstream::set_note_mode (NoteMode m)
312 midi_playlist()->set_note_mode(m);
313 if (_write_source && _write_source->model())
314 _write_source->model()->set_note_mode(m);
319 trace_midi (ostream& o, MIDI::byte *msg, size_t len)
321 using namespace MIDI;
323 const char trace_prefix = ':';
325 type = (eventType) (msg[0]&0xF0);
332 << " NoteOff NoteNum "
343 << " NoteOn NoteNum "
359 case MIDI::controller:
374 << " Program Change ProgNum "
383 << " Channel Pressure "
388 case MIDI::pitchbend:
393 << ((msg[2]<<7)|msg[1])
432 << "System Exclusive (1 byte : " << hex << (int) *msg << dec << ')'
438 << "System Exclusive (" << len << ") = [ " << hex;
439 for (unsigned int i = 0; i < len; ++i) {
440 o << (int) msg[i] << ' ';
442 o << dec << ']' << endl;
448 o << trace_prefix << "Song" << endl;
452 o << trace_prefix << "Tune" << endl;
456 o << trace_prefix << "End-of-System Exclusive" << endl;
460 o << trace_prefix << "Timing" << endl;
464 o << trace_prefix << "Start" << endl;
468 o << trace_prefix << "Stop" << endl;
472 o << trace_prefix << "Continue" << endl;
476 o << trace_prefix << "Active Sense" << endl;
480 o << trace_prefix << "Unrecognized MIDI message" << endl;
487 MidiDiskstream::process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input)
490 nframes_t rec_offset = 0;
491 nframes_t rec_nframes = 0;
492 bool nominally_recording;
493 bool re = record_enabled ();
495 /* if we've already processed the frames corresponding to this call,
496 just return. this allows multiple routes that are taking input
497 from this diskstream to call our ::process() method, but have
498 this stuff only happen once. more commonly, it allows both
499 the AudioTrack that is using this AudioDiskstream *and* the Session
500 to call process() without problems.
507 commit_should_unlock = false;
509 check_record_status (transport_frame, nframes, can_record);
511 nominally_recording = (can_record && re);
518 /* This lock is held until the end of ::commit, so these two functions
519 must always be called as a pair. The only exception is if this function
520 returns a non-zero value, in which case, ::commit should not be called.
523 // If we can't take the state lock return.
524 if (!state_lock.trylock()) {
527 commit_should_unlock = true;
528 adjust_capture_position = 0;
530 if (nominally_recording || (_session.get_record_enabled() && _session.config.get_punch_in())) {
531 OverlapType ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
533 calculate_record_range(ot, transport_frame, nframes, rec_nframes, rec_offset);
535 if (rec_nframes && !was_recording) {
536 capture_captured = 0;
537 was_recording = true;
542 if (can_record && !_last_capture_regions.empty()) {
543 _last_capture_regions.clear ();
546 if (nominally_recording || rec_nframes) {
548 // Pump entire port buffer into the ring buffer (FIXME: split cycles?)
549 MidiBuffer& buf = _source_port->get_midi_buffer(nframes);
550 for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
551 const Evoral::MIDIEvent<MidiBuffer::TimeType> ev(*i, false);
553 _capture_buf->write(ev.time() + transport_frame, ev.type(), ev.size(), ev.buffer());
559 finish_capture (rec_monitors_input);
566 /* data will be written to disk */
568 if (rec_nframes == nframes && rec_offset == 0) {
569 playback_distance = nframes;
572 adjust_capture_position = rec_nframes;
574 } else if (nominally_recording) {
576 /* XXXX do this for MIDI !!!
577 can't do actual capture yet - waiting for latency effects to finish before we start
580 playback_distance = nframes;
590 /* we're exiting with failure, so ::commit will not
591 be called. unlock the state lock.
594 commit_should_unlock = false;
602 MidiDiskstream::commit (nframes_t nframes)
604 bool need_butler = false;
606 if (_actual_speed < 0.0) {
607 playback_sample -= playback_distance;
609 playback_sample += playback_distance;
612 if (adjust_capture_position != 0) {
613 capture_captured += adjust_capture_position;
614 adjust_capture_position = 0;
617 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
618 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
619 if ((frames_written - frames_read) + nframes < midi_readahead) {
623 /*cerr << "MDS written: " << frames_written << " - read: " << frames_read <<
624 " = " << frames_written - frames_read
625 << " + " << nframes << " < " << midi_readahead << " = " << need_butler << ")" << endl;*/
627 if (commit_should_unlock) {
637 MidiDiskstream::set_pending_overwrite (bool yn)
639 /* called from audio thread, so we can use the read ptr and playback sample as we wish */
641 pending_overwrite = yn;
643 overwrite_frame = playback_sample;
647 MidiDiskstream::overwrite_existing_buffers ()
649 //read(overwrite_frame, disk_io_chunk_frames, false);
650 overwrite_queued = false;
651 pending_overwrite = false;
657 MidiDiskstream::seek (nframes_t frame, bool complete_refill)
659 Glib::Mutex::Lock lm (state_lock);
662 _playback_buf->reset();
663 _capture_buf->reset();
664 g_atomic_int_set(&_frames_read_from_ringbuffer, 0);
665 g_atomic_int_set(&_frames_written_to_ringbuffer, 0);
667 playback_sample = frame;
670 if (complete_refill) {
671 while ((ret = do_refill_with_alloc ()) > 0) ;
673 ret = do_refill_with_alloc ();
680 MidiDiskstream::can_internal_playback_seek (nframes_t distance)
682 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
683 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
684 return ((frames_written - frames_read) < distance);
688 MidiDiskstream::internal_playback_seek (nframes_t distance)
690 first_recordable_frame += distance;
691 playback_sample += distance;
696 /** @a start is set to the new frame position (TIME) read up to */
698 MidiDiskstream::read (nframes_t& start, nframes_t dur, bool reversed)
700 nframes_t this_read = 0;
702 nframes_t loop_end = 0;
703 nframes_t loop_start = 0;
704 nframes_t loop_length = 0;
708 /* Make the use of a Location atomic for this read operation.
710 Note: Locations don't get deleted, so all we care about
711 when I say "atomic" is that we are always pointing to
712 the same one and using a start/length values obtained
716 if ((loc = loop_location) != 0) {
717 loop_start = loc->start();
718 loop_end = loc->end();
719 loop_length = loop_end - loop_start;
722 /* if we are looping, ensure that the first frame we read is at the correct
723 position within the loop.
726 if (loc && (start >= loop_end)) {
727 //cerr << "start adjusted from " << start;
728 start = loop_start + ((start - loop_start) % loop_length);
729 //cerr << "to " << start << endl;
731 //cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl;
736 /* take any loop into account. we can't read past the end of the loop. */
738 if (loc && (loop_end - start < dur)) {
739 this_read = loop_end - start;
740 //cerr << "reloop true: thisread: " << this_read << " dur: " << dur << endl;
747 if (this_read == 0) {
751 this_read = min(dur,this_read);
753 if (midi_playlist()->read (*_playback_buf, start, this_read) != this_read) {
754 error << string_compose(
755 _("MidiDiskstream %1: cannot read %2 from playlist at frame %3"),
756 _id, this_read, start) << endmsg;
760 g_atomic_int_add(&_frames_written_to_ringbuffer, this_read);
762 _read_data_count = _playlist->read_data_count();
766 // Swap note ons with note offs here. etc?
767 // Fully reversing MIDI requires look-ahead (well, behind) to find previous
768 // CC values etc. hard.
772 /* if we read to the end of the loop, go back to the beginning */
775 // Synthesize LoopEvent here, because the next events
776 // written will have non-monotonic timestamps.
777 _playback_buf->write(loop_end - 1, LoopEventType, 0, 0);
778 cout << "Pushing LoopEvent ts=" << loop_end-1
779 << " start+this_read " << start+this_read << endl;
788 //offset += this_read;
795 MidiDiskstream::do_refill_with_alloc ()
801 MidiDiskstream::do_refill ()
804 size_t write_space = _playback_buf->write_space();
805 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
807 if (write_space == 0) {
815 /* at end: nothing to do */
816 if (file_frame == max_frames) {
820 // At this point we...
821 assert(_playback_buf->write_space() > 0); // ... have something to write to, and
822 assert(file_frame <= max_frames); // ... something to write
824 // now calculate how much time is in the ringbuffer.
825 // and lets write as much as we need to get this to be midi_readahead;
826 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
827 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
828 if ((frames_written - frames_read) >= midi_readahead) {
829 //cout << "MDS Nothing to do. all fine" << endl;
833 nframes_t to_read = midi_readahead - (frames_written - frames_read);
835 //cout << "MDS read for midi_readahead " << to_read << " rb_contains: "
836 // << frames_written - frames_read << endl;
838 to_read = min(to_read, (max_frames - file_frame));
840 if (read (file_frame, to_read, reversed)) {
847 /** Flush pending data to disk.
849 * Important note: this function will write *AT MOST* disk_io_chunk_frames
850 * of data to disk. it will never write more than that. If it writes that
851 * much and there is more than that waiting to be written, it will return 1,
852 * otherwise 0 on success or -1 on failure.
854 * If there is less than disk_io_chunk_frames to be written, no data will be
855 * written at all unless @a force_flush is true.
858 MidiDiskstream::do_flush (RunContext /*context*/, bool force_flush)
864 _write_data_count = 0;
866 total = _session.transport_frame() - _last_flush_frame;
868 if (_last_flush_frame > _session.transport_frame()
869 || _last_flush_frame < capture_start_frame) {
870 _last_flush_frame = _session.transport_frame();
873 if (total == 0 || _capture_buf->read_space() == 0
874 || (!force_flush && (total < disk_io_chunk_frames && was_recording))) {
878 /* if there are 2+ chunks of disk i/o possible for
879 this track, let the caller know so that it can arrange
880 for us to be called again, ASAP.
882 if we are forcing a flush, then if there is* any* extra
883 work, let the caller know.
885 if we are no longer recording and there is any extra work,
886 let the caller know too.
889 if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) {
893 to_write = disk_io_chunk_frames;
895 assert(!destructive());
898 && ( (_session.transport_frame() - _last_flush_frame > disk_io_chunk_frames)
900 if ((!_write_source) || _write_source->midi_write (*_capture_buf, capture_start_frame, to_write) != to_write) {
901 error << string_compose(_("MidiDiskstream %1: cannot write to disk"), _id) << endmsg;
904 _last_flush_frame = _session.transport_frame();
913 MidiDiskstream::transport_stopped (struct tm& /*when*/, time_t /*twhen*/, bool abort_capture)
915 uint32_t buffer_position;
916 bool more_work = true;
918 boost::shared_ptr<MidiRegion> region;
919 nframes_t total_capture;
920 MidiRegion::SourceList srcs;
921 MidiRegion::SourceList::iterator src;
922 vector<CaptureInfo*>::iterator ci;
923 bool mark_write_completed = false;
925 finish_capture (true);
927 /* butler is already stopped, but there may be work to do
928 to flush remaining data to disk.
931 while (more_work && !err) {
932 switch (do_flush (TransportContext, true)) {
939 error << string_compose(_("MidiDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
944 /* XXX is there anything we can do if err != 0 ? */
945 Glib::Mutex::Lock lm (capture_info_lock);
947 if (capture_info.empty()) {
955 _write_source->mark_for_remove ();
956 _write_source->drop_references ();
957 _write_source.reset();
960 /* new source set up in "out" below */
964 assert(_write_source);
966 for (total_capture = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
967 total_capture += (*ci)->frames;
970 /* figure out the name for this take */
972 srcs.push_back (_write_source);
973 _write_source->set_timeline_position (capture_info.front()->start);
974 _write_source->set_captured_for (_name);
976 string whole_file_region_name;
977 whole_file_region_name = region_name_from_path (_write_source->name(), true);
979 /* Register a new region with the Session that
980 describes the entire source. Do this first
981 so that any sub-regions will obviously be
982 children of this one (later!)
986 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, 0,
987 total_capture, whole_file_region_name, 0,
988 Region::Flag (Region::DefaultFlags|Region::Automatic|Region::WholeFile)));
990 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
991 region->special_set_position (capture_info.front()->start);
995 catch (failed_constructor& err) {
996 error << string_compose(_("%1: could not create region for complete midi file"), _name) << endmsg;
1000 _last_capture_regions.push_back (region);
1002 // cerr << _name << ": there are " << capture_info.size() << " capture_info records\n";
1004 XMLNode &before = _playlist->get_state();
1005 _playlist->freeze ();
1007 for (buffer_position = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1011 _session.region_name (region_name, _write_source->name(), false);
1013 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
1016 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, buffer_position, (*ci)->frames, region_name));
1017 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1020 catch (failed_constructor& err) {
1021 error << _("MidiDiskstream: could not create region for captured midi!") << endmsg;
1022 continue; /* XXX is this OK? */
1025 region->GoingAway.connect (bind (mem_fun (*this, &Diskstream::remove_region_from_last_capture), boost::weak_ptr<Region>(region)));
1027 _last_capture_regions.push_back (region);
1029 // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
1031 i_am_the_modifier++;
1032 _playlist->add_region (region, (*ci)->start);
1033 i_am_the_modifier--;
1035 buffer_position += (*ci)->frames;
1039 XMLNode &after = _playlist->get_state();
1040 _session.add_command (new MementoCommand<Playlist>(*_playlist, &before, &after));
1044 mark_write_completed = true;
1046 reset_write_sources (mark_write_completed);
1048 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1052 capture_info.clear ();
1053 capture_start_frame = 0;
1057 MidiDiskstream::transport_looped (nframes_t transport_frame)
1059 if (was_recording) {
1061 // adjust the capture length knowing that the data will be recorded to disk
1062 // only necessary after the first loop where we're recording
1063 if (capture_info.size() == 0) {
1064 capture_captured += _capture_offset;
1066 if (_alignment_style == ExistingMaterial) {
1067 capture_captured += _session.worst_output_latency();
1069 capture_captured += _roll_delay;
1073 finish_capture (true);
1075 // the next region will start recording via the normal mechanism
1076 // we'll set the start position to the current transport pos
1077 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1078 capture_start_frame = transport_frame;
1079 first_recordable_frame = transport_frame; // mild lie
1080 last_recordable_frame = max_frames;
1081 was_recording = true;
1086 MidiDiskstream::finish_capture (bool /*rec_monitors_input*/)
1088 was_recording = false;
1090 if (capture_captured == 0) {
1094 // Why must we destroy?
1095 assert(!destructive());
1097 CaptureInfo* ci = new CaptureInfo;
1099 ci->start = capture_start_frame;
1100 ci->frames = capture_captured;
1102 /* XXX theoretical race condition here. Need atomic exchange ?
1103 However, the circumstances when this is called right
1104 now (either on record-disable or transport_stopped)
1105 mean that no actual race exists. I think ...
1106 We now have a capture_info_lock, but it is only to be used
1107 to synchronize in the transport_stop and the capture info
1108 accessors, so that invalidation will not occur (both non-realtime).
1111 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1113 capture_info.push_back (ci);
1114 capture_captured = 0;
1118 MidiDiskstream::set_record_enabled (bool yn)
1120 if (!recordable() || !_session.record_enabling_legal()) {
1124 assert(!destructive());
1126 if (yn && _source_port == 0) {
1128 /* pick up connections not initiated *from* the IO object
1129 we're associated with.
1132 get_input_sources ();
1135 /* yes, i know that this not proof against race conditions, but its
1136 good enough. i think.
1139 if (record_enabled() != yn) {
1141 engage_record_enable ();
1143 disengage_record_enable ();
1149 MidiDiskstream::engage_record_enable ()
1151 bool rolling = _session.transport_speed() != 0.0f;
1153 g_atomic_int_set (&_record_enabled, 1);
1155 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1156 _source_port->request_monitor_input (!(_session.config.get_auto_input() && rolling));
1159 // FIXME: Why is this necessary? Isn't needed for AudioDiskstream...
1161 use_new_write_source();
1163 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1165 RecordEnableChanged (); /* EMIT SIGNAL */
1169 MidiDiskstream::disengage_record_enable ()
1171 g_atomic_int_set (&_record_enabled, 0);
1172 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1174 _source_port->request_monitor_input (false);
1178 RecordEnableChanged (); /* EMIT SIGNAL */
1182 MidiDiskstream::get_state ()
1184 XMLNode* node = new XMLNode ("MidiDiskstream");
1186 LocaleGuard lg (X_("POSIX"));
1188 snprintf (buf, sizeof(buf), "0x%x", _flags);
1189 node->add_property ("flags", buf);
1191 node->add_property("channel-mode", enum_2_string(get_channel_mode()));
1193 snprintf (buf, sizeof(buf), "0x%x", get_channel_mask());
1194 node->add_property("channel-mask", buf);
1196 node->add_property ("playlist", _playlist->name());
1198 snprintf (buf, sizeof(buf), "%f", _visible_speed);
1199 node->add_property ("speed", buf);
1201 node->add_property("name", _name);
1202 id().print(buf, sizeof(buf));
1203 node->add_property("id", buf);
1205 if (_write_source && _session.get_record_enabled()) {
1207 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1208 XMLNode* cs_grandchild;
1210 cs_grandchild = new XMLNode (X_("file"));
1211 cs_grandchild->add_property (X_("path"), _write_source->path());
1212 cs_child->add_child_nocopy (*cs_grandchild);
1214 /* store the location where capture will start */
1218 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1219 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1221 snprintf (buf, sizeof (buf), "%" PRIu32, _session.transport_frame());
1224 cs_child->add_property (X_("at"), buf);
1225 node->add_child_nocopy (*cs_child);
1229 node->add_child_copy (*_extra_xml);
1236 MidiDiskstream::set_state (const XMLNode& node, int /*version*/)
1238 const XMLProperty* prop;
1239 XMLNodeList nlist = node.children();
1240 XMLNodeIterator niter;
1241 uint32_t nchans = 1;
1242 XMLNode* capture_pending_node = 0;
1243 LocaleGuard lg (X_("POSIX"));
1245 in_set_state = true;
1247 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1248 /*if ((*niter)->name() == IO::state_node_name) {
1249 deprecated_io_node = new XMLNode (**niter);
1251 assert ((*niter)->name() != IO::state_node_name);
1253 if ((*niter)->name() == X_("CapturingSources")) {
1254 capture_pending_node = *niter;
1258 /* prevent write sources from being created */
1260 in_set_state = true;
1262 if ((prop = node.property ("name")) != 0) {
1263 _name = prop->value();
1266 if ((prop = node.property ("id")) != 0) {
1267 _id = prop->value ();
1270 if ((prop = node.property ("flags")) != 0) {
1271 _flags = Flag (string_2_enum (prop->value(), _flags));
1274 ChannelMode channel_mode = AllChannels;
1275 if ((prop = node.property ("channel-mode")) != 0) {
1276 channel_mode = ChannelMode (string_2_enum(prop->value(), channel_mode));
1279 unsigned int channel_mask = 0xFFFF;
1280 if ((prop = node.property ("channel-mask")) != 0) {
1281 sscanf (prop->value().c_str(), "0x%x", &channel_mask);
1282 if (channel_mask & (~0xFFFF)) {
1283 warning << _("MidiDiskstream: XML property channel-mask out of range") << endmsg;
1287 set_channel_mode(channel_mode, channel_mask);
1289 if ((prop = node.property ("channels")) != 0) {
1290 nchans = atoi (prop->value().c_str());
1293 if ((prop = node.property ("playlist")) == 0) {
1298 bool had_playlist = (_playlist != 0);
1300 if (find_and_use_playlist (prop->value())) {
1304 if (!had_playlist) {
1305 _playlist->set_orig_diskstream_id (_id);
1308 if (capture_pending_node) {
1309 use_pending_capture_data (*capture_pending_node);
1314 if ((prop = node.property ("speed")) != 0) {
1315 double sp = atof (prop->value().c_str());
1317 if (realtime_set_speed (sp, false)) {
1318 non_realtime_set_speed ();
1322 in_set_state = false;
1324 /* make sure this is clear before we do anything else */
1327 //_capturing_source = 0;
1329 /* write sources are handled when we handle the input set
1330 up of the IO that owns this DS (::non_realtime_input_change())
1333 in_set_state = false;
1339 MidiDiskstream::use_new_write_source (uint32_t n)
1341 if (!recordable()) {
1347 if (_write_source) {
1349 if (_write_source->is_empty ()) {
1350 _write_source->mark_for_remove ();
1351 _write_source.reset();
1353 _write_source.reset();
1358 _write_source = boost::dynamic_pointer_cast<SMFSource>(_session.create_midi_source_for_session (*this));
1359 if (!_write_source) {
1360 throw failed_constructor();
1364 catch (failed_constructor &err) {
1365 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1366 _write_source.reset();
1370 _write_source->set_allow_remove_if_empty (true);
1371 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1377 MidiDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1379 if (!_session.writable() || !recordable()) {
1383 if (_write_source && mark_write_complete) {
1384 _write_source->mark_streaming_write_completed ();
1387 use_new_write_source (0);
1391 MidiDiskstream::rename_write_sources ()
1393 if (_write_source != 0) {
1394 _write_source->set_source_name (_name, destructive());
1395 /* XXX what to do if this fails ? */
1401 MidiDiskstream::set_block_size (nframes_t /*nframes*/)
1406 MidiDiskstream::allocate_temporary_buffers ()
1411 MidiDiskstream::monitor_input (bool yn)
1414 _source_port->ensure_monitor_input (yn);
1418 MidiDiskstream::set_align_style_from_io ()
1420 bool have_physical = false;
1426 get_input_sources ();
1428 if (_source_port && _source_port->flags() & JackPortIsPhysical) {
1429 have_physical = true;
1432 if (have_physical) {
1433 set_align_style (ExistingMaterial);
1435 set_align_style (CaptureTime);
1441 MidiDiskstream::playback_buffer_load () const
1443 return (float) ((double) _playback_buf->read_space()/
1444 (double) _playback_buf->capacity());
1448 MidiDiskstream::capture_buffer_load () const
1450 return (float) ((double) _capture_buf->write_space()/
1451 (double) _capture_buf->capacity());
1455 MidiDiskstream::use_pending_capture_data (XMLNode& /*node*/)
1460 /** Writes playback events in the given range to \a dst, translating time stamps
1461 * so that an event at \a start has time = 0
1464 MidiDiskstream::get_playback (MidiBuffer& dst, nframes_t start, nframes_t end)
1467 assert(dst.size() == 0);
1469 // Reverse. ... We just don't do reverse, ok? Back off.
1474 // Translates stamps to be relative to start
1476 _playback_buf->read(dst, start, end);
1479 const size_t events_read = _playback_buf->read(dst, start, end);
1480 cout << _name << ": MDS events read = " << events_read
1481 << " start = " << start << " end = " << end
1482 << " readspace " << _playback_buf->read_space()
1483 << " writespace " << _playback_buf->write_space() << endl;
1486 gint32 frames_read = end - start;
1487 g_atomic_int_add(&_frames_read_from_ringbuffer, frames_read);