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 framecnt_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)
86 use_new_write_source (0);
90 assert(!destructive());
93 MidiDiskstream::MidiDiskstream (Session& sess, const XMLNode& node)
94 : Diskstream(sess, node)
98 , _last_flush_frame(0)
99 , _note_mode(Sustained)
100 , _frames_written_to_ringbuffer(0)
101 , _frames_read_from_ringbuffer(0)
107 if (set_state (node, Stateful::loading_state_version)) {
108 in_set_state = false;
109 throw failed_constructor();
112 use_new_write_source (0);
114 in_set_state = false;
118 MidiDiskstream::init ()
120 /* there are no channels at this point, so these
121 two calls just get speed_buffer_size and wrap_buffer
122 size setup without duplicating their code.
125 set_block_size (_session.get_block_size());
126 allocate_temporary_buffers ();
128 const size_t size = _session.butler()->midi_diskstream_buffer_size();
129 _playback_buf = new MidiRingBuffer<framepos_t>(size);
130 _capture_buf = new MidiRingBuffer<framepos_t>(size);
132 _n_channels = ChanCount(DataType::MIDI, 1);
134 assert(recordable());
137 MidiDiskstream::~MidiDiskstream ()
139 Glib::Mutex::Lock lm (state_lock);
144 MidiDiskstream::non_realtime_locate (framepos_t position)
147 _write_source->set_timeline_position (position);
149 cerr << name() << " Seeking to " << position << endl;
150 seek (position, false);
155 MidiDiskstream::non_realtime_input_change ()
158 Glib::Mutex::Lock lm (state_lock);
160 if (input_change_pending.type == IOChange::NoChange) {
164 if (input_change_pending.type & IOChange::ConfigurationChanged) {
165 uint32_t ni = _io->n_ports().n_midi();
167 if (ni != _n_channels.n_midi()) {
168 error << string_compose (_("%1: I/O configuration change %4 requested to use %2, but channel setup is %3"),
171 _n_channels, input_change_pending.type)
178 _source_port = _io->midi(0);
182 if (input_change_pending.type & IOChange::ConnectionsChanged) {
183 set_capture_offset ();
184 set_align_style_from_io ();
187 input_change_pending.type = IOChange::NoChange;
189 /* implicit unlock */
192 /* unlike with audio, there is never any need to reset write sources
193 based on input configuration changes because ... a MIDI track
194 has just 1 MIDI port as input, always.
197 /* now refill channel buffers */
199 if (speed() != 1.0f || speed() != -1.0f) {
200 seek ((framepos_t) (_session.transport_frame() * (double) speed()));
203 seek (_session.transport_frame());
206 _last_flush_frame = _session.transport_frame();
210 MidiDiskstream::find_and_use_playlist (const string& name)
212 boost::shared_ptr<MidiPlaylist> playlist;
214 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (_session.playlists->by_name (name))) == 0) {
215 playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (DataType::MIDI, _session, name));
219 error << string_compose(_("MidiDiskstream: Playlist \"%1\" isn't an midi playlist"), name) << endmsg;
223 return use_playlist (playlist);
227 MidiDiskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
229 assert(boost::dynamic_pointer_cast<MidiPlaylist>(playlist));
231 Diskstream::use_playlist(playlist);
237 MidiDiskstream::use_new_playlist ()
240 boost::shared_ptr<MidiPlaylist> playlist;
242 if (!in_set_state && destructive()) {
247 newname = Playlist::bump_name (_playlist->name(), _session);
249 newname = Playlist::bump_name (_name, _session);
252 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (
253 DataType::MIDI, _session, newname, hidden()))) != 0) {
255 playlist->set_orig_diskstream_id (id());
256 return use_playlist (playlist);
264 MidiDiskstream::use_copy_playlist ()
266 assert(midi_playlist());
272 if (_playlist == 0) {
273 error << string_compose(_("MidiDiskstream %1: there is no existing playlist to make a copy of!"), _name) << endmsg;
278 boost::shared_ptr<MidiPlaylist> playlist;
280 newname = Playlist::bump_name (_playlist->name(), _session);
282 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist>(PlaylistFactory::create (midi_playlist(), newname))) != 0) {
283 playlist->set_orig_diskstream_id (id());
284 return use_playlist (playlist);
290 /** Overloaded from parent to die horribly
293 MidiDiskstream::set_destructive (bool yn)
295 assert( ! destructive());
301 MidiDiskstream::set_note_mode (NoteMode m)
304 midi_playlist()->set_note_mode(m);
305 if (_write_source && _write_source->model())
306 _write_source->model()->set_note_mode(m);
311 trace_midi (ostream& o, MIDI::byte *msg, size_t len)
313 using namespace MIDI;
315 const char trace_prefix = ':';
317 type = (eventType) (msg[0]&0xF0);
324 << " NoteOff NoteNum "
335 << " NoteOn NoteNum "
351 case MIDI::controller:
366 << " Program Change ProgNum "
375 << " Channel Pressure "
380 case MIDI::pitchbend:
385 << ((msg[2]<<7)|msg[1])
424 << "System Exclusive (1 byte : " << hex << (int) *msg << dec << ')'
430 << "System Exclusive (" << len << ") = [ " << hex;
431 for (unsigned int i = 0; i < len; ++i) {
432 o << (int) msg[i] << ' ';
434 o << dec << ']' << endl;
440 o << trace_prefix << "Song" << endl;
444 o << trace_prefix << "Tune" << endl;
448 o << trace_prefix << "End-of-System Exclusive" << endl;
452 o << trace_prefix << "Timing" << endl;
456 o << trace_prefix << "Start" << endl;
460 o << trace_prefix << "Stop" << endl;
464 o << trace_prefix << "Continue" << endl;
468 o << trace_prefix << "Active Sense" << endl;
472 o << trace_prefix << "Unrecognized MIDI message" << endl;
479 MidiDiskstream::process (framepos_t transport_frame, pframes_t nframes, bool can_record, bool rec_monitors_input, bool& need_butler)
482 framecnt_t rec_offset = 0;
483 framecnt_t rec_nframes = 0;
484 bool nominally_recording;
485 bool re = record_enabled ();
487 playback_distance = 0;
489 check_record_status (transport_frame, can_record);
491 nominally_recording = (can_record && re);
497 if (_source_port == 0) {
501 Glib::Mutex::Lock sm (state_lock, Glib::TRY_LOCK);
507 adjust_capture_position = 0;
509 if (nominally_recording || (re && was_recording && _session.get_record_enabled() && _session.config.get_punch_in())) {
510 OverlapType ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
512 calculate_record_range(ot, transport_frame, nframes, rec_nframes, rec_offset);
514 if (rec_nframes && !was_recording) {
515 _write_source->mark_write_starting_now ();
516 capture_captured = 0;
517 was_recording = true;
521 if (can_record && !_last_capture_sources.empty()) {
522 _last_capture_sources.clear ();
525 if (nominally_recording || rec_nframes) {
527 // Pump entire port buffer into the ring buffer (FIXME: split cycles?)
528 MidiBuffer& buf = _source_port->get_midi_buffer(nframes);
529 for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
530 const Evoral::MIDIEvent<MidiBuffer::TimeType> ev(*i, false);
533 if (DEBUG::MidiIO & PBD::debug_bits) {
534 const uint8_t* __data = ev.buffer();
536 DEBUG_STR_APPEND(a, string_compose ("mididiskstream %1 capture event @ %2 + %3 sz %4 ", this, ev.time(), transport_frame, ev.size()));
537 for (size_t i=0; i < ev.size(); ++i) {
538 DEBUG_STR_APPEND(a,hex);
539 DEBUG_STR_APPEND(a,"0x");
540 DEBUG_STR_APPEND(a,(int)__data[i]);
541 DEBUG_STR_APPEND(a,' ');
543 DEBUG_STR_APPEND(a,'\n');
544 DEBUG_TRACE (DEBUG::MidiIO, DEBUG_STR(a).str());
547 _capture_buf->write(ev.time() + transport_frame, ev.type(), ev.size(), ev.buffer());
550 if (buf.size() != 0) {
551 /* XXX this needs fixing - realtime new() call for
552 every time we get MIDI data in a process callback!
555 /* Make a copy of this data and emit it for the GUI to see */
556 boost::shared_ptr<MidiBuffer> copy (new MidiBuffer (buf.capacity ()));
557 for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
558 copy->push_back ((*i).time() + transport_frame, (*i).size(), (*i).buffer());
561 DataRecorded (copy, _write_source); /* EMIT SIGNAL */
567 finish_capture (rec_monitors_input);
574 /* data will be written to disk */
576 if (rec_nframes == nframes && rec_offset == 0) {
577 playback_distance = nframes;
580 adjust_capture_position = rec_nframes;
582 } else if (nominally_recording) {
584 /* XXXX do this for MIDI !!!
585 can't do actual capture yet - waiting for latency effects to finish before we start
588 playback_distance = nframes;
592 /* XXX: should be doing varispeed stuff here, similar to the code in AudioDiskstream::process */
594 playback_distance = nframes;
600 if (commit (nframes)) {
608 MidiDiskstream::commit (framecnt_t nframes)
610 bool need_butler = false;
612 if (_actual_speed < 0.0) {
613 playback_sample -= playback_distance;
615 playback_sample += playback_distance;
618 if (adjust_capture_position != 0) {
619 capture_captured += adjust_capture_position;
620 adjust_capture_position = 0;
623 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
624 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
625 if ((frames_written - frames_read) + nframes < midi_readahead) {
629 /*cerr << "MDS written: " << frames_written << " - read: " << frames_read <<
630 " = " << frames_written - frames_read
631 << " + " << nframes << " < " << midi_readahead << " = " << need_butler << ")" << endl;*/
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;
642 overwrite_frame = playback_sample;
646 MidiDiskstream::overwrite_existing_buffers ()
648 /* This is safe as long as the butler thread is suspended, which it should be */
649 _playback_buf->reset ();
651 g_atomic_int_set (&_frames_read_from_ringbuffer, 0);
652 g_atomic_int_set (&_frames_written_to_ringbuffer, 0);
654 read (overwrite_frame, disk_io_chunk_frames, false);
655 file_frame = overwrite_frame; // it was adjusted by ::read()
656 overwrite_queued = false;
657 _pending_overwrite = false;
663 MidiDiskstream::seek (framepos_t frame, bool complete_refill)
665 Glib::Mutex::Lock lm (state_lock);
668 _playback_buf->reset();
669 _capture_buf->reset();
670 g_atomic_int_set(&_frames_read_from_ringbuffer, 0);
671 g_atomic_int_set(&_frames_written_to_ringbuffer, 0);
673 playback_sample = frame;
676 if (complete_refill) {
677 while ((ret = do_refill_with_alloc ()) > 0) ;
679 ret = do_refill_with_alloc ();
686 MidiDiskstream::can_internal_playback_seek (framecnt_t distance)
688 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
689 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
690 return ((frames_written - frames_read) < distance);
694 MidiDiskstream::internal_playback_seek (framecnt_t distance)
696 first_recordable_frame += distance;
697 playback_sample += distance;
702 /** @a start is set to the new frame position (TIME) read up to */
704 MidiDiskstream::read (framepos_t& start, framecnt_t dur, bool reversed)
706 framecnt_t this_read = 0;
708 framepos_t loop_end = 0;
709 framepos_t loop_start = 0;
714 framecnt_t loop_length = 0;
716 /* Make the use of a Location atomic for this read operation.
718 Note: Locations don't get deleted, so all we care about
719 when I say "atomic" is that we are always pointing to
720 the same one and using a start/length values obtained
724 if ((loc = loop_location) != 0) {
725 loop_start = loc->start();
726 loop_end = loc->end();
727 loop_length = loop_end - loop_start;
730 /* if we are looping, ensure that the first frame we read is at the correct
731 position within the loop.
734 if (loc && (start >= loop_end)) {
735 //cerr << "start adjusted from " << start;
736 start = loop_start + ((start - loop_start) % loop_length);
737 //cerr << "to " << start << endl;
739 //cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl;
744 /* take any loop into account. we can't read past the end of the loop. */
746 if (loc && (loop_end - start < dur)) {
747 this_read = loop_end - start;
748 //cerr << "reloop true: thisread: " << this_read << " dur: " << dur << endl;
755 if (this_read == 0) {
759 this_read = min(dur,this_read);
761 if (midi_playlist()->read (*_playback_buf, start, this_read) != this_read) {
762 error << string_compose(
763 _("MidiDiskstream %1: cannot read %2 from playlist at frame %3"),
764 _id, this_read, start) << endmsg;
768 g_atomic_int_add(&_frames_written_to_ringbuffer, this_read);
770 _read_data_count = _playlist->read_data_count();
774 // Swap note ons with note offs here. etc?
775 // Fully reversing MIDI requires look-ahead (well, behind) to find previous
776 // CC values etc. hard.
780 /* if we read to the end of the loop, go back to the beginning */
783 // Synthesize LoopEvent here, because the next events
784 // written will have non-monotonic timestamps.
785 _playback_buf->write(loop_end - 1, LoopEventType, sizeof (framepos_t), (uint8_t *) &loop_start);
793 //offset += this_read;
800 MidiDiskstream::do_refill_with_alloc ()
806 MidiDiskstream::do_refill ()
809 size_t write_space = _playback_buf->write_space();
810 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
812 if (write_space == 0) {
820 /* at end: nothing to do */
821 if (file_frame == max_framepos) {
825 // At this point we...
826 assert(_playback_buf->write_space() > 0); // ... have something to write to, and
827 assert(file_frame <= max_framepos); // ... something to write
829 // now calculate how much time is in the ringbuffer.
830 // and lets write as much as we need to get this to be midi_readahead;
831 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
832 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
833 if ((frames_written - frames_read) >= midi_readahead) {
837 framecnt_t to_read = midi_readahead - (frames_written - frames_read);
839 //cout << "MDS read for midi_readahead " << to_read << " rb_contains: "
840 // << frames_written - frames_read << endl;
842 to_read = (framecnt_t) min ((framecnt_t) to_read, (framecnt_t) (max_framepos - file_frame));
844 if (read (file_frame, to_read, reversed)) {
851 /** Flush pending data to disk.
853 * Important note: this function will write *AT MOST* disk_io_chunk_frames
854 * of data to disk. it will never write more than that. If it writes that
855 * much and there is more than that waiting to be written, it will return 1,
856 * otherwise 0 on success or -1 on failure.
858 * If there is less than disk_io_chunk_frames to be written, no data will be
859 * written at all unless @a force_flush is true.
862 MidiDiskstream::do_flush (RunContext /*context*/, bool force_flush)
868 cerr << name() << " flushing to disk, bufspace = " << _capture_buf->read_space() << endl;
870 _write_data_count = 0;
872 total = _session.transport_frame() - _last_flush_frame;
874 if (_last_flush_frame > _session.transport_frame() || _last_flush_frame < capture_start_frame) {
875 _last_flush_frame = _session.transport_frame();
878 if (total == 0 || _capture_buf->read_space() == 0
879 || (!force_flush && (total < disk_io_chunk_frames && was_recording))) {
880 cerr << "\tFlush shortcut because total = " << total
881 << " capture read space = " << _capture_buf->read_space()
882 << " force flush = " << force_flush
883 << " was recording = " << was_recording
888 /* if there are 2+ chunks of disk i/o possible for
889 this track, let the caller know so that it can arrange
890 for us to be called again, ASAP.
892 if we are forcing a flush, then if there is* any* extra
893 work, let the caller know.
895 if we are no longer recording and there is any extra work,
896 let the caller know too.
899 if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) {
903 to_write = disk_io_chunk_frames;
905 assert(!destructive());
907 if (record_enabled() &&
908 ((_session.transport_frame() - _last_flush_frame > disk_io_chunk_frames) ||
910 if ((!_write_source) || _write_source->midi_write (*_capture_buf, get_capture_start_frame (0), to_write) != to_write) {
911 error << string_compose(_("MidiDiskstream %1: cannot write to disk"), _id) << endmsg;
914 cerr << "didn't write, _write_source = " << _write_source << endl;
915 _last_flush_frame = _session.transport_frame();
918 cerr << "\tdidn't write to disk because recenabled = " << record_enabled()
919 << " last flush @ " << _last_flush_frame << " disk io " << disk_io_chunk_frames << " TF @ " << _session.transport_frame()
920 << " force = " << force_flush << endl;
928 MidiDiskstream::transport_stopped_wallclock (struct tm& /*when*/, time_t /*twhen*/, bool abort_capture)
930 bool more_work = true;
932 boost::shared_ptr<MidiRegion> region;
933 MidiRegion::SourceList srcs;
934 MidiRegion::SourceList::iterator src;
935 vector<CaptureInfo*>::iterator ci;
937 finish_capture (true);
939 /* butler is already stopped, but there may be work to do
940 to flush remaining data to disk.
943 while (more_work && !err) {
944 switch (do_flush (TransportContext, true)) {
951 error << string_compose(_("MidiDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
956 /* XXX is there anything we can do if err != 0 ? */
957 Glib::Mutex::Lock lm (capture_info_lock);
959 if (capture_info.empty()) {
966 _write_source->mark_for_remove ();
967 _write_source->drop_references ();
968 _write_source.reset();
971 /* new source set up in "out" below */
975 assert(_write_source);
977 framecnt_t total_capture = 0;
978 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
979 total_capture += (*ci)->frames;
982 if (_write_source->length (capture_info.front()->start) != 0) {
984 /* phew, we have data */
986 /* figure out the name for this take */
988 srcs.push_back (_write_source);
990 _write_source->set_timeline_position (capture_info.front()->start);
991 _write_source->set_captured_for (_name);
993 /* flush to disk: this step differs from the audio path,
994 where all the data is already on disk.
997 _write_source->mark_streaming_write_completed ();
999 /* set length in beats to entire capture length */
1001 BeatsFramesConverter converter (_session.tempo_map(), capture_info.front()->start);
1002 const double total_capture_beats = converter.from(total_capture);
1003 _write_source->set_length_beats(total_capture_beats);
1005 /* we will want to be able to keep (over)writing the source
1006 but we don't want it to be removable. this also differs
1007 from the audio situation, where the source at this point
1008 must be considered immutable. luckily, we can rely on
1009 MidiSource::mark_streaming_write_completed() to have
1010 already done the necessary work for that.
1013 string whole_file_region_name;
1014 whole_file_region_name = region_name_from_path (_write_source->name(), true);
1016 /* Register a new region with the Session that
1017 describes the entire source. Do this first
1018 so that any sub-regions will obviously be
1019 children of this one (later!)
1025 plist.add (Properties::name, whole_file_region_name);
1026 plist.add (Properties::whole_file, true);
1027 plist.add (Properties::automatic, true);
1028 plist.add (Properties::start, 0);
1029 plist.add (Properties::length, total_capture);
1030 plist.add (Properties::layer, 0);
1032 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1034 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1035 region->special_set_position (capture_info.front()->start);
1039 catch (failed_constructor& err) {
1040 error << string_compose(_("%1: could not create region for complete midi file"), _name) << endmsg;
1044 _last_capture_sources.insert (_last_capture_sources.end(), srcs.begin(), srcs.end());
1046 _playlist->clear_changes ();
1047 _playlist->freeze ();
1049 /* Session frame time of the initial capture in this pass, which is where the source starts */
1050 framepos_t initial_capture = 0;
1051 if (!capture_info.empty()) {
1052 initial_capture = capture_info.front()->start;
1055 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1059 RegionFactory::region_name (region_name, _write_source->name(), false);
1061 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
1066 /* start of this region is the offset between the start of its capture and the start of the whole pass */
1067 plist.add (Properties::start, (*ci)->start - initial_capture);
1068 plist.add (Properties::length, (*ci)->frames);
1069 plist.add (Properties::length_beats, converter.from((*ci)->frames));
1070 plist.add (Properties::name, region_name);
1072 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1073 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1076 catch (failed_constructor& err) {
1077 error << _("MidiDiskstream: could not create region for captured midi!") << endmsg;
1078 continue; /* XXX is this OK? */
1081 // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
1083 i_am_the_modifier++;
1084 _playlist->add_region (region, (*ci)->start);
1085 i_am_the_modifier--;
1089 _session.add_command (new StatefulDiffCommand(_playlist));
1093 /* No data was recorded, so this capture will
1094 effectively be aborted; do the same as we
1095 do for an explicit abort.
1098 if (_write_source) {
1099 _write_source->mark_for_remove ();
1100 _write_source->drop_references ();
1101 _write_source.reset();
1107 use_new_write_source (0);
1109 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1114 midi_playlist()->clear_note_trackers ();
1117 capture_info.clear ();
1118 capture_start_frame = 0;
1122 MidiDiskstream::transport_looped (framepos_t transport_frame)
1124 if (was_recording) {
1126 // adjust the capture length knowing that the data will be recorded to disk
1127 // only necessary after the first loop where we're recording
1128 if (capture_info.size() == 0) {
1129 capture_captured += _capture_offset;
1131 if (_alignment_style == ExistingMaterial) {
1132 capture_captured += _session.worst_output_latency();
1134 capture_captured += _roll_delay;
1138 finish_capture (true);
1140 // the next region will start recording via the normal mechanism
1141 // we'll set the start position to the current transport pos
1142 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1143 capture_start_frame = transport_frame;
1144 first_recordable_frame = transport_frame; // mild lie
1145 last_recordable_frame = max_framepos;
1146 was_recording = true;
1151 MidiDiskstream::finish_capture (bool /*rec_monitors_input*/)
1153 was_recording = false;
1155 if (capture_captured == 0) {
1159 // Why must we destroy?
1160 assert(!destructive());
1162 CaptureInfo* ci = new CaptureInfo;
1164 ci->start = capture_start_frame;
1165 ci->frames = capture_captured;
1167 /* XXX theoretical race condition here. Need atomic exchange ?
1168 However, the circumstances when this is called right
1169 now (either on record-disable or transport_stopped)
1170 mean that no actual race exists. I think ...
1171 We now have a capture_info_lock, but it is only to be used
1172 to synchronize in the transport_stop and the capture info
1173 accessors, so that invalidation will not occur (both non-realtime).
1176 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1178 capture_info.push_back (ci);
1179 capture_captured = 0;
1183 MidiDiskstream::set_record_enabled (bool yn)
1185 if (!recordable() || !_session.record_enabling_legal()) {
1189 assert(!destructive());
1191 /* yes, i know that this not proof against race conditions, but its
1192 good enough. i think.
1195 if (record_enabled() != yn) {
1197 engage_record_enable ();
1199 disengage_record_enable ();
1205 MidiDiskstream::engage_record_enable ()
1207 bool const rolling = _session.transport_speed() != 0.0f;
1209 g_atomic_int_set (&_record_enabled, 1);
1211 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1212 _source_port->request_monitor_input (!(_session.config.get_auto_input() && rolling));
1215 RecordEnableChanged (); /* EMIT SIGNAL */
1219 MidiDiskstream::disengage_record_enable ()
1221 g_atomic_int_set (&_record_enabled, 0);
1222 RecordEnableChanged (); /* EMIT SIGNAL */
1226 MidiDiskstream::get_state ()
1228 XMLNode& node (Diskstream::get_state());
1230 LocaleGuard lg (X_("POSIX"));
1232 node.add_property("channel-mode", enum_2_string(get_channel_mode()));
1233 snprintf (buf, sizeof(buf), "0x%x", get_channel_mask());
1234 node.add_property("channel-mask", buf);
1236 if (_write_source && _session.get_record_enabled()) {
1238 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1239 XMLNode* cs_grandchild;
1241 cs_grandchild = new XMLNode (X_("file"));
1242 cs_grandchild->add_property (X_("path"), _write_source->path());
1243 cs_child->add_child_nocopy (*cs_grandchild);
1245 /* store the location where capture will start */
1249 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1250 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1252 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1255 cs_child->add_property (X_("at"), buf);
1256 node.add_child_nocopy (*cs_child);
1263 MidiDiskstream::set_state (const XMLNode& node, int version)
1265 const XMLProperty* prop;
1266 XMLNodeList nlist = node.children();
1267 XMLNodeIterator niter;
1268 XMLNode* capture_pending_node = 0;
1269 LocaleGuard lg (X_("POSIX"));
1271 /* prevent write sources from being created */
1273 in_set_state = true;
1275 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1276 assert ((*niter)->name() != IO::state_node_name);
1278 if ((*niter)->name() == X_("CapturingSources")) {
1279 capture_pending_node = *niter;
1283 if (Diskstream::set_state (node, version)) {
1287 ChannelMode channel_mode = AllChannels;
1288 if ((prop = node.property ("channel-mode")) != 0) {
1289 channel_mode = ChannelMode (string_2_enum(prop->value(), channel_mode));
1292 unsigned int channel_mask = 0xFFFF;
1293 if ((prop = node.property ("channel-mask")) != 0) {
1294 sscanf (prop->value().c_str(), "0x%x", &channel_mask);
1295 if (channel_mask & (~0xFFFF)) {
1296 warning << _("MidiDiskstream: XML property channel-mask out of range") << endmsg;
1301 if (capture_pending_node) {
1302 use_pending_capture_data (*capture_pending_node);
1305 set_channel_mode (channel_mode, channel_mask);
1307 in_set_state = false;
1313 MidiDiskstream::use_new_write_source (uint32_t n)
1315 if (!_session.writable() || !recordable()) {
1321 _write_source.reset();
1324 _write_source = boost::dynamic_pointer_cast<SMFSource>(
1325 _session.create_midi_source_for_session (0, name ()));
1327 if (!_write_source) {
1328 throw failed_constructor();
1332 catch (failed_constructor &err) {
1333 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1334 _write_source.reset();
1341 list<boost::shared_ptr<Source> >
1342 MidiDiskstream::steal_write_sources()
1344 list<boost::shared_ptr<Source> > ret;
1346 /* put some data on the disk, even if its just a header for an empty file */
1347 boost::dynamic_pointer_cast<SMFSource> (_write_source)->ensure_disk_file ();
1349 /* never let it go away */
1350 _write_source->mark_nonremovable ();
1352 ret.push_back (_write_source);
1356 use_new_write_source (0);
1362 MidiDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1364 if (!_session.writable() || !recordable()) {
1368 if (_write_source && mark_write_complete) {
1369 _write_source->mark_streaming_write_completed ();
1371 use_new_write_source (0);
1375 MidiDiskstream::set_block_size (pframes_t /*nframes*/)
1380 MidiDiskstream::allocate_temporary_buffers ()
1385 MidiDiskstream::monitor_input (bool yn)
1388 _source_port->ensure_monitor_input (yn);
1392 MidiDiskstream::set_align_style_from_io ()
1394 if (_alignment_choice != Automatic) {
1398 /* XXX Not sure what, if anything we can do with MIDI
1399 as far as capture alignment etc.
1402 set_align_style (ExistingMaterial);
1407 MidiDiskstream::playback_buffer_load () const
1409 return (float) ((double) _playback_buf->read_space()/
1410 (double) _playback_buf->capacity());
1414 MidiDiskstream::capture_buffer_load () const
1416 return (float) ((double) _capture_buf->write_space()/
1417 (double) _capture_buf->capacity());
1421 MidiDiskstream::use_pending_capture_data (XMLNode& /*node*/)
1426 /** Writes playback events in the given range to \a dst, translating time stamps
1427 * so that an event at \a start has time = 0
1430 MidiDiskstream::get_playback (MidiBuffer& dst, framepos_t start, framepos_t end)
1433 assert(dst.size() == 0);
1435 // Reverse. ... We just don't do reverse, ok? Back off.
1440 // Translate stamps to be relative to start
1444 DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose (
1445 "%1 MDS pre-read read %4..%5 from %2 write to %3\n", _name,
1446 _playback_buf->get_read_ptr(), _playback_buf->get_write_ptr(), start, end));
1447 // cerr << "================\n";
1448 // _playback_buf->dump (cerr);
1449 // cerr << "----------------\n";
1451 const size_t events_read = _playback_buf->read(dst, start, end);
1452 DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose (
1453 "%1 MDS events read %2 range %3 .. %4 rspace %5 wspace %6 r@%7 w@%8\n",
1454 _name, events_read, start, end,
1455 _playback_buf->read_space(), _playback_buf->write_space(),
1456 _playback_buf->get_read_ptr(), _playback_buf->get_write_ptr()));
1458 _playback_buf->read(dst, start, end);
1461 gint32 frames_read = end - start;
1462 g_atomic_int_add(&_frames_read_from_ringbuffer, frames_read);
1466 MidiDiskstream::set_name (string const & name)
1468 Diskstream::set_name (name);
1470 /* get a new write source so that its name reflects the new diskstream name */
1471 use_new_write_source (0);