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)
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<framepos_t>(size);
132 _capture_buf = new MidiRingBuffer<framepos_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 (framepos_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.type == IOChange::NoChange) {
165 if (input_change_pending.type & IOChange::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.type = IOChange::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 ((framepos_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 (framepos_t transport_frame, pframes_t nframes, bool can_record, bool rec_monitors_input, bool& need_butler)
494 framecnt_t rec_offset = 0;
495 framecnt_t rec_nframes = 0;
496 bool nominally_recording;
497 bool re = record_enabled ();
499 playback_distance = 0;
501 check_record_status (transport_frame, 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 || (re && was_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 _write_source->mark_write_starting_now ();
524 capture_captured = 0;
525 was_recording = true;
530 if (can_record && !_last_capture_sources.empty()) {
531 _last_capture_sources.clear ();
534 if (nominally_recording || rec_nframes) {
536 // Pump entire port buffer into the ring buffer (FIXME: split cycles?)
537 MidiBuffer& buf = _source_port->get_midi_buffer(nframes);
538 for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
539 const Evoral::MIDIEvent<MidiBuffer::TimeType> ev(*i, false);
541 _capture_buf->write(ev.time() + transport_frame, ev.type(), ev.size(), ev.buffer());
544 if (buf.size() != 0) {
545 /* Make a copy of this data and emit it for the GUI to see */
546 boost::shared_ptr<MidiBuffer> copy (new MidiBuffer (buf.capacity ()));
547 for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
548 copy->push_back ((*i).time() + transport_frame, (*i).size(), (*i).buffer());
551 DataRecorded (copy, _write_source); /* EMIT SIGNAL */
557 finish_capture (rec_monitors_input);
564 /* data will be written to disk */
566 if (rec_nframes == nframes && rec_offset == 0) {
567 playback_distance = nframes;
570 adjust_capture_position = rec_nframes;
572 } else if (nominally_recording) {
574 /* XXXX do this for MIDI !!!
575 can't do actual capture yet - waiting for latency effects to finish before we start
578 playback_distance = nframes;
582 /* XXX: should be doing varispeed stuff here, similar to the code in AudioDiskstream::process */
584 playback_distance = nframes;
590 if (commit (nframes)) {
598 MidiDiskstream::commit (framecnt_t nframes)
600 bool need_butler = false;
602 if (_actual_speed < 0.0) {
603 playback_sample -= playback_distance;
605 playback_sample += playback_distance;
608 if (adjust_capture_position != 0) {
609 capture_captured += adjust_capture_position;
610 adjust_capture_position = 0;
613 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
614 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
615 if ((frames_written - frames_read) + nframes < midi_readahead) {
619 /*cerr << "MDS written: " << frames_written << " - read: " << frames_read <<
620 " = " << frames_written - frames_read
621 << " + " << nframes << " < " << midi_readahead << " = " << need_butler << ")" << endl;*/
627 MidiDiskstream::set_pending_overwrite (bool yn)
629 /* called from audio thread, so we can use the read ptr and playback sample as we wish */
631 _pending_overwrite = yn;
633 overwrite_frame = playback_sample;
637 MidiDiskstream::overwrite_existing_buffers ()
639 /* This is safe as long as the butler thread is suspended, which it should be */
640 _playback_buf->reset ();
642 g_atomic_int_set (&_frames_read_from_ringbuffer, 0);
643 g_atomic_int_set (&_frames_written_to_ringbuffer, 0);
645 read (overwrite_frame, disk_io_chunk_frames, false);
646 overwrite_queued = false;
647 _pending_overwrite = false;
653 MidiDiskstream::seek (framepos_t frame, bool complete_refill)
655 Glib::Mutex::Lock lm (state_lock);
658 _playback_buf->reset();
659 _capture_buf->reset();
660 g_atomic_int_set(&_frames_read_from_ringbuffer, 0);
661 g_atomic_int_set(&_frames_written_to_ringbuffer, 0);
663 playback_sample = frame;
666 if (complete_refill) {
667 while ((ret = do_refill_with_alloc ()) > 0) ;
669 ret = do_refill_with_alloc ();
676 MidiDiskstream::can_internal_playback_seek (framecnt_t distance)
678 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
679 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
680 return ((frames_written - frames_read) < distance);
684 MidiDiskstream::internal_playback_seek (framecnt_t distance)
686 first_recordable_frame += distance;
687 playback_sample += distance;
692 /** @a start is set to the new frame position (TIME) read up to */
694 MidiDiskstream::read (framepos_t& start, framecnt_t dur, bool reversed)
696 framecnt_t this_read = 0;
698 framepos_t loop_end = 0;
699 framepos_t loop_start = 0;
704 framecnt_t loop_length = 0;
706 /* Make the use of a Location atomic for this read operation.
708 Note: Locations don't get deleted, so all we care about
709 when I say "atomic" is that we are always pointing to
710 the same one and using a start/length values obtained
714 if ((loc = loop_location) != 0) {
715 loop_start = loc->start();
716 loop_end = loc->end();
717 loop_length = loop_end - loop_start;
720 /* if we are looping, ensure that the first frame we read is at the correct
721 position within the loop.
724 if (loc && (start >= loop_end)) {
725 //cerr << "start adjusted from " << start;
726 start = loop_start + ((start - loop_start) % loop_length);
727 //cerr << "to " << start << endl;
729 //cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl;
734 /* take any loop into account. we can't read past the end of the loop. */
736 if (loc && (loop_end - start < dur)) {
737 this_read = loop_end - start;
738 //cerr << "reloop true: thisread: " << this_read << " dur: " << dur << endl;
745 if (this_read == 0) {
749 this_read = min(dur,this_read);
751 if (midi_playlist()->read (*_playback_buf, start, this_read) != this_read) {
752 error << string_compose(
753 _("MidiDiskstream %1: cannot read %2 from playlist at frame %3"),
754 _id, this_read, start) << endmsg;
758 g_atomic_int_add(&_frames_written_to_ringbuffer, this_read);
760 _read_data_count = _playlist->read_data_count();
764 // Swap note ons with note offs here. etc?
765 // Fully reversing MIDI requires look-ahead (well, behind) to find previous
766 // CC values etc. hard.
770 /* if we read to the end of the loop, go back to the beginning */
773 // Synthesize LoopEvent here, because the next events
774 // written will have non-monotonic timestamps.
775 _playback_buf->write(loop_end - 1, LoopEventType, sizeof (framepos_t), (uint8_t *) &loop_start);
783 //offset += this_read;
790 MidiDiskstream::do_refill_with_alloc ()
796 MidiDiskstream::do_refill ()
799 size_t write_space = _playback_buf->write_space();
800 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
802 if (write_space == 0) {
810 /* at end: nothing to do */
811 if (file_frame == max_framepos) {
815 // At this point we...
816 assert(_playback_buf->write_space() > 0); // ... have something to write to, and
817 assert(file_frame <= max_framepos); // ... something to write
819 // now calculate how much time is in the ringbuffer.
820 // and lets write as much as we need to get this to be midi_readahead;
821 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
822 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
823 if ((frames_written - frames_read) >= midi_readahead) {
827 framecnt_t to_read = midi_readahead - (frames_written - frames_read);
829 //cout << "MDS read for midi_readahead " << to_read << " rb_contains: "
830 // << frames_written - frames_read << endl;
832 to_read = (framecnt_t) min ((framecnt_t) to_read, (framecnt_t) (max_framepos - file_frame));
834 if (read (file_frame, to_read, reversed)) {
841 /** Flush pending data to disk.
843 * Important note: this function will write *AT MOST* disk_io_chunk_frames
844 * of data to disk. it will never write more than that. If it writes that
845 * much and there is more than that waiting to be written, it will return 1,
846 * otherwise 0 on success or -1 on failure.
848 * If there is less than disk_io_chunk_frames to be written, no data will be
849 * written at all unless @a force_flush is true.
852 MidiDiskstream::do_flush (RunContext /*context*/, bool force_flush)
858 _write_data_count = 0;
860 total = _session.transport_frame() - _last_flush_frame;
862 if (_last_flush_frame > _session.transport_frame() || _last_flush_frame < capture_start_frame) {
863 _last_flush_frame = _session.transport_frame();
866 if (total == 0 || _capture_buf->read_space() == 0
867 || (!force_flush && (total < disk_io_chunk_frames && was_recording))) {
871 /* if there are 2+ chunks of disk i/o possible for
872 this track, let the caller know so that it can arrange
873 for us to be called again, ASAP.
875 if we are forcing a flush, then if there is* any* extra
876 work, let the caller know.
878 if we are no longer recording and there is any extra work,
879 let the caller know too.
882 if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) {
886 to_write = disk_io_chunk_frames;
888 assert(!destructive());
890 if (record_enabled() &&
891 ((_session.transport_frame() - _last_flush_frame > disk_io_chunk_frames) ||
893 if ((!_write_source) || _write_source->midi_write (*_capture_buf, get_capture_start_frame (0), to_write) != to_write) {
894 error << string_compose(_("MidiDiskstream %1: cannot write to disk"), _id) << endmsg;
897 _last_flush_frame = _session.transport_frame();
906 MidiDiskstream::transport_stopped_wallclock (struct tm& /*when*/, time_t /*twhen*/, bool abort_capture)
908 bool more_work = true;
910 boost::shared_ptr<MidiRegion> region;
911 MidiRegion::SourceList srcs;
912 MidiRegion::SourceList::iterator src;
913 vector<CaptureInfo*>::iterator ci;
914 bool mark_write_completed = false;
916 finish_capture (true);
918 /* butler is already stopped, but there may be work to do
919 to flush remaining data to disk.
922 while (more_work && !err) {
923 switch (do_flush (TransportContext, true)) {
930 error << string_compose(_("MidiDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
935 /* XXX is there anything we can do if err != 0 ? */
936 Glib::Mutex::Lock lm (capture_info_lock);
938 if (capture_info.empty()) {
945 _write_source->mark_for_remove ();
946 _write_source->drop_references ();
947 _write_source.reset();
950 /* new source set up in "out" below */
954 assert(_write_source);
956 framecnt_t total_capture = 0;
957 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
958 total_capture += (*ci)->frames;
961 if (_write_source->length (capture_info.front()->start) != 0) {
963 /* phew, we have data */
965 /* figure out the name for this take */
967 srcs.push_back (_write_source);
969 _write_source->set_timeline_position (capture_info.front()->start);
970 _write_source->set_captured_for (_name);
972 /* flush to disk: this step differs from the audio path,
973 where all the data is already on disk.
976 _write_source->mark_streaming_write_completed ();
978 /* set length in beats to entire capture length */
980 BeatsFramesConverter converter (_session.tempo_map(), capture_info.front()->start);
981 const double total_capture_beats = converter.from(total_capture);
982 _write_source->set_length_beats(total_capture_beats);
984 /* make it not a stub anymore */
986 _write_source->unstubify ();
988 /* we will want to be able to keep (over)writing the source
989 but we don't want it to be removable. this also differs
990 from the audio situation, where the source at this point
991 must be considered immutable. luckily, we can rely on
992 MidiSource::mark_streaming_write_completed() to have
993 already done the necessary work for that.
996 string whole_file_region_name;
997 whole_file_region_name = region_name_from_path (_write_source->name(), true);
999 /* Register a new region with the Session that
1000 describes the entire source. Do this first
1001 so that any sub-regions will obviously be
1002 children of this one (later!)
1008 plist.add (Properties::name, whole_file_region_name);
1009 plist.add (Properties::whole_file, true);
1010 plist.add (Properties::automatic, true);
1011 plist.add (Properties::start, 0);
1012 plist.add (Properties::length, total_capture);
1013 plist.add (Properties::layer, 0);
1015 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1017 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1018 region->special_set_position (capture_info.front()->start);
1022 catch (failed_constructor& err) {
1023 error << string_compose(_("%1: could not create region for complete midi file"), _name) << endmsg;
1027 _last_capture_sources.insert (_last_capture_sources.end(), srcs.begin(), srcs.end());
1029 _playlist->clear_changes ();
1030 _playlist->freeze ();
1032 /* Session frame time of the initial capture in this pass, which is where the source starts */
1033 framepos_t initial_capture = 0;
1034 if (!capture_info.empty()) {
1035 initial_capture = capture_info.front()->start;
1038 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1042 RegionFactory::region_name (region_name, _write_source->name(), false);
1044 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
1049 /* start of this region is the offset between the start of its capture and the start of the whole pass */
1050 plist.add (Properties::start, (*ci)->start - initial_capture);
1051 plist.add (Properties::length, (*ci)->frames);
1052 plist.add (Properties::length_beats, converter.from((*ci)->frames));
1053 plist.add (Properties::name, region_name);
1055 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1056 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1059 catch (failed_constructor& err) {
1060 error << _("MidiDiskstream: could not create region for captured midi!") << endmsg;
1061 continue; /* XXX is this OK? */
1064 // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
1066 i_am_the_modifier++;
1067 _playlist->add_region (region, (*ci)->start);
1068 i_am_the_modifier--;
1072 _session.add_command (new StatefulDiffCommand(_playlist));
1076 /* No data was recorded, so this capture will
1077 effectively be aborted; do the same as we
1078 do for an explicit abort.
1081 if (_write_source) {
1082 _write_source->mark_for_remove ();
1083 _write_source->drop_references ();
1084 _write_source.reset();
1089 mark_write_completed = true;
1092 use_new_write_source (0);
1094 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1099 midi_playlist()->clear_note_trackers ();
1102 capture_info.clear ();
1103 capture_start_frame = 0;
1107 MidiDiskstream::transport_looped (framepos_t transport_frame)
1109 if (was_recording) {
1111 // adjust the capture length knowing that the data will be recorded to disk
1112 // only necessary after the first loop where we're recording
1113 if (capture_info.size() == 0) {
1114 capture_captured += _capture_offset;
1116 if (_alignment_style == ExistingMaterial) {
1117 capture_captured += _session.worst_output_latency();
1119 capture_captured += _roll_delay;
1123 finish_capture (true);
1125 // the next region will start recording via the normal mechanism
1126 // we'll set the start position to the current transport pos
1127 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1128 capture_start_frame = transport_frame;
1129 first_recordable_frame = transport_frame; // mild lie
1130 last_recordable_frame = max_framepos;
1131 was_recording = true;
1136 MidiDiskstream::finish_capture (bool /*rec_monitors_input*/)
1138 was_recording = false;
1140 if (capture_captured == 0) {
1144 // Why must we destroy?
1145 assert(!destructive());
1147 CaptureInfo* ci = new CaptureInfo;
1149 ci->start = capture_start_frame;
1150 ci->frames = capture_captured;
1152 /* XXX theoretical race condition here. Need atomic exchange ?
1153 However, the circumstances when this is called right
1154 now (either on record-disable or transport_stopped)
1155 mean that no actual race exists. I think ...
1156 We now have a capture_info_lock, but it is only to be used
1157 to synchronize in the transport_stop and the capture info
1158 accessors, so that invalidation will not occur (both non-realtime).
1161 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1163 capture_info.push_back (ci);
1164 capture_captured = 0;
1168 MidiDiskstream::set_record_enabled (bool yn)
1170 if (!recordable() || !_session.record_enabling_legal()) {
1174 assert(!destructive());
1176 /* yes, i know that this not proof against race conditions, but its
1177 good enough. i think.
1180 if (record_enabled() != yn) {
1182 engage_record_enable ();
1184 disengage_record_enable ();
1190 MidiDiskstream::engage_record_enable ()
1192 bool const rolling = _session.transport_speed() != 0.0f;
1194 g_atomic_int_set (&_record_enabled, 1);
1196 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1197 _source_port->request_monitor_input (!(_session.config.get_auto_input() && rolling));
1200 RecordEnableChanged (); /* EMIT SIGNAL */
1204 MidiDiskstream::disengage_record_enable ()
1206 g_atomic_int_set (&_record_enabled, 0);
1207 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1209 _source_port->request_monitor_input (false);
1213 RecordEnableChanged (); /* EMIT SIGNAL */
1217 MidiDiskstream::get_state ()
1219 XMLNode* node = new XMLNode ("Diskstream");
1221 LocaleGuard lg (X_("POSIX"));
1223 snprintf (buf, sizeof(buf), "0x%x", _flags);
1224 node->add_property ("flags", buf);
1226 node->add_property("channel-mode", enum_2_string(get_channel_mode()));
1228 snprintf (buf, sizeof(buf), "0x%x", get_channel_mask());
1229 node->add_property("channel-mask", buf);
1231 node->add_property ("playlist", _playlist->name());
1233 snprintf (buf, sizeof(buf), "%f", _visible_speed);
1234 node->add_property ("speed", buf);
1236 node->add_property("name", _name);
1237 id().print(buf, sizeof(buf));
1238 node->add_property("id", buf);
1240 if (_write_source && _session.get_record_enabled()) {
1242 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1243 XMLNode* cs_grandchild;
1245 cs_grandchild = new XMLNode (X_("file"));
1246 cs_grandchild->add_property (X_("path"), _write_source->path());
1247 cs_child->add_child_nocopy (*cs_grandchild);
1249 /* store the location where capture will start */
1253 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1254 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1256 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1259 cs_child->add_property (X_("at"), buf);
1260 node->add_child_nocopy (*cs_child);
1264 node->add_child_copy (*_extra_xml);
1271 MidiDiskstream::set_state (const XMLNode& node, int /*version*/)
1273 const XMLProperty* prop;
1274 XMLNodeList nlist = node.children();
1275 XMLNodeIterator niter;
1276 XMLNode* capture_pending_node = 0;
1277 LocaleGuard lg (X_("POSIX"));
1279 in_set_state = true;
1281 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1282 /*if ((*niter)->name() == IO::state_node_name) {
1283 deprecated_io_node = new XMLNode (**niter);
1285 assert ((*niter)->name() != IO::state_node_name);
1287 if ((*niter)->name() == X_("CapturingSources")) {
1288 capture_pending_node = *niter;
1292 /* prevent write sources from being created */
1294 in_set_state = true;
1296 if ((prop = node.property ("name")) != 0) {
1297 _name = prop->value();
1300 if ((prop = node.property ("id")) != 0) {
1301 _id = prop->value ();
1304 if ((prop = node.property ("flags")) != 0) {
1305 _flags = Flag (string_2_enum (prop->value(), _flags));
1308 ChannelMode channel_mode = AllChannels;
1309 if ((prop = node.property ("channel-mode")) != 0) {
1310 channel_mode = ChannelMode (string_2_enum(prop->value(), channel_mode));
1313 unsigned int channel_mask = 0xFFFF;
1314 if ((prop = node.property ("channel-mask")) != 0) {
1315 sscanf (prop->value().c_str(), "0x%x", &channel_mask);
1316 if (channel_mask & (~0xFFFF)) {
1317 warning << _("MidiDiskstream: XML property channel-mask out of range") << endmsg;
1321 set_channel_mode(channel_mode, channel_mask);
1323 if ((prop = node.property ("playlist")) == 0) {
1328 bool had_playlist = (_playlist != 0);
1330 if (find_and_use_playlist (prop->value())) {
1334 if (!had_playlist) {
1335 _playlist->set_orig_diskstream_id (id());
1338 if (capture_pending_node) {
1339 use_pending_capture_data (*capture_pending_node);
1344 if ((prop = node.property ("speed")) != 0) {
1345 double sp = atof (prop->value().c_str());
1347 if (realtime_set_speed (sp, false)) {
1348 non_realtime_set_speed ();
1352 in_set_state = false;
1358 MidiDiskstream::use_new_write_source (uint32_t n)
1360 if (!_session.writable() || !recordable()) {
1366 _write_source.reset();
1369 /* file starts off as a stub file, it will be converted
1370 when we're done with a capture pass, or when "stolen"
1374 _write_source = boost::dynamic_pointer_cast<SMFSource>(
1375 _session.create_midi_source_for_session (0, name (), true));
1377 if (!_write_source) {
1378 throw failed_constructor();
1382 catch (failed_constructor &err) {
1383 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1384 _write_source.reset();
1388 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1393 list<boost::shared_ptr<Source> >
1394 MidiDiskstream::steal_write_sources()
1396 list<boost::shared_ptr<Source> > ret;
1398 /* put some data on the disk, even if its just a header for an empty file.
1399 XXX should we not have a more direct method for doing this? Maybe not
1400 since we don't want to mess around with the model/disk relationship
1401 that the Source has to pay attention to.
1404 boost::dynamic_pointer_cast<MidiSource>(_write_source)->session_saved ();
1406 /* make it visible/present */
1407 _write_source->unstubify ();
1408 /* never let it go away */
1409 _write_source->mark_nonremovable ();
1411 ret.push_back (_write_source);
1415 use_new_write_source (0);
1421 MidiDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1423 if (!_session.writable() || !recordable()) {
1427 if (_write_source && mark_write_complete) {
1428 _write_source->mark_streaming_write_completed ();
1430 use_new_write_source (0);
1434 MidiDiskstream::rename_write_sources ()
1436 if (_write_source != 0) {
1437 _write_source->set_source_name (_name.val(), destructive());
1438 /* XXX what to do if this fails ? */
1444 MidiDiskstream::set_block_size (pframes_t /*nframes*/)
1449 MidiDiskstream::allocate_temporary_buffers ()
1454 MidiDiskstream::monitor_input (bool yn)
1457 _source_port->ensure_monitor_input (yn);
1461 MidiDiskstream::set_align_style_from_io ()
1463 bool have_physical = false;
1469 get_input_sources ();
1471 if (_source_port && _source_port->flags() & JackPortIsPhysical) {
1472 have_physical = true;
1475 if (have_physical) {
1476 set_align_style (ExistingMaterial);
1478 set_align_style (CaptureTime);
1484 MidiDiskstream::playback_buffer_load () const
1486 return (float) ((double) _playback_buf->read_space()/
1487 (double) _playback_buf->capacity());
1491 MidiDiskstream::capture_buffer_load () const
1493 return (float) ((double) _capture_buf->write_space()/
1494 (double) _capture_buf->capacity());
1498 MidiDiskstream::use_pending_capture_data (XMLNode& /*node*/)
1503 /** Writes playback events in the given range to \a dst, translating time stamps
1504 * so that an event at \a start has time = 0
1507 MidiDiskstream::get_playback (MidiBuffer& dst, framepos_t start, framepos_t end)
1510 assert(dst.size() == 0);
1512 // Reverse. ... We just don't do reverse, ok? Back off.
1517 // Translates stamps to be relative to start
1521 const size_t events_read = _playback_buf->read(dst, start, end);
1522 DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("%1 MDS events read %2 range %3 .. %4 rspace %5 wspace %6\n", _name, events_read, start, end,
1523 _playback_buf->read_space(), _playback_buf->write_space()));
1525 _playback_buf->read(dst, start, end);
1528 gint32 frames_read = end - start;
1529 g_atomic_int_add(&_frames_read_from_ringbuffer, frames_read);