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 /* we will want to be able to keep (over)writing the source
985 but we don't want it to be removable. this also differs
986 from the audio situation, where the source at this point
987 must be considered immutable. luckily, we can rely on
988 MidiSource::mark_streaming_write_completed() to have
989 already done the necessary work for that.
992 string whole_file_region_name;
993 whole_file_region_name = region_name_from_path (_write_source->name(), true);
995 /* Register a new region with the Session that
996 describes the entire source. Do this first
997 so that any sub-regions will obviously be
998 children of this one (later!)
1004 plist.add (Properties::name, whole_file_region_name);
1005 plist.add (Properties::whole_file, true);
1006 plist.add (Properties::automatic, true);
1007 plist.add (Properties::start, 0);
1008 plist.add (Properties::length, total_capture);
1009 plist.add (Properties::layer, 0);
1011 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1013 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1014 region->special_set_position (capture_info.front()->start);
1018 catch (failed_constructor& err) {
1019 error << string_compose(_("%1: could not create region for complete midi file"), _name) << endmsg;
1023 _last_capture_sources.insert (_last_capture_sources.end(), srcs.begin(), srcs.end());
1025 _playlist->clear_changes ();
1026 _playlist->freeze ();
1028 /* Session frame time of the initial capture in this pass, which is where the source starts */
1029 framepos_t initial_capture = 0;
1030 if (!capture_info.empty()) {
1031 initial_capture = capture_info.front()->start;
1034 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1038 RegionFactory::region_name (region_name, _write_source->name(), false);
1040 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
1045 /* start of this region is the offset between the start of its capture and the start of the whole pass */
1046 plist.add (Properties::start, (*ci)->start - initial_capture);
1047 plist.add (Properties::length, (*ci)->frames);
1048 plist.add (Properties::length_beats, converter.from((*ci)->frames));
1049 plist.add (Properties::name, region_name);
1051 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1052 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1055 catch (failed_constructor& err) {
1056 error << _("MidiDiskstream: could not create region for captured midi!") << endmsg;
1057 continue; /* XXX is this OK? */
1060 // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
1062 i_am_the_modifier++;
1063 _playlist->add_region (region, (*ci)->start);
1064 i_am_the_modifier--;
1068 _session.add_command (new StatefulDiffCommand(_playlist));
1072 /* No data was recorded, so this capture will
1073 effectively be aborted; do the same as we
1074 do for an explicit abort.
1077 if (_write_source) {
1078 _write_source->mark_for_remove ();
1079 _write_source->drop_references ();
1080 _write_source.reset();
1085 mark_write_completed = true;
1088 use_new_write_source (0);
1090 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1095 midi_playlist()->clear_note_trackers ();
1098 capture_info.clear ();
1099 capture_start_frame = 0;
1103 MidiDiskstream::transport_looped (framepos_t transport_frame)
1105 if (was_recording) {
1107 // adjust the capture length knowing that the data will be recorded to disk
1108 // only necessary after the first loop where we're recording
1109 if (capture_info.size() == 0) {
1110 capture_captured += _capture_offset;
1112 if (_alignment_style == ExistingMaterial) {
1113 capture_captured += _session.worst_output_latency();
1115 capture_captured += _roll_delay;
1119 finish_capture (true);
1121 // the next region will start recording via the normal mechanism
1122 // we'll set the start position to the current transport pos
1123 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1124 capture_start_frame = transport_frame;
1125 first_recordable_frame = transport_frame; // mild lie
1126 last_recordable_frame = max_framepos;
1127 was_recording = true;
1132 MidiDiskstream::finish_capture (bool /*rec_monitors_input*/)
1134 was_recording = false;
1136 if (capture_captured == 0) {
1140 // Why must we destroy?
1141 assert(!destructive());
1143 CaptureInfo* ci = new CaptureInfo;
1145 ci->start = capture_start_frame;
1146 ci->frames = capture_captured;
1148 /* XXX theoretical race condition here. Need atomic exchange ?
1149 However, the circumstances when this is called right
1150 now (either on record-disable or transport_stopped)
1151 mean that no actual race exists. I think ...
1152 We now have a capture_info_lock, but it is only to be used
1153 to synchronize in the transport_stop and the capture info
1154 accessors, so that invalidation will not occur (both non-realtime).
1157 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1159 capture_info.push_back (ci);
1160 capture_captured = 0;
1164 MidiDiskstream::set_record_enabled (bool yn)
1166 if (!recordable() || !_session.record_enabling_legal()) {
1170 assert(!destructive());
1172 /* yes, i know that this not proof against race conditions, but its
1173 good enough. i think.
1176 if (record_enabled() != yn) {
1178 engage_record_enable ();
1180 disengage_record_enable ();
1186 MidiDiskstream::engage_record_enable ()
1188 bool const rolling = _session.transport_speed() != 0.0f;
1190 g_atomic_int_set (&_record_enabled, 1);
1192 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1193 _source_port->request_monitor_input (!(_session.config.get_auto_input() && rolling));
1196 RecordEnableChanged (); /* EMIT SIGNAL */
1200 MidiDiskstream::disengage_record_enable ()
1202 g_atomic_int_set (&_record_enabled, 0);
1203 RecordEnableChanged (); /* EMIT SIGNAL */
1207 MidiDiskstream::get_state ()
1209 XMLNode& node (Diskstream::get_state());
1211 LocaleGuard lg (X_("POSIX"));
1213 node.add_property("channel-mode", enum_2_string(get_channel_mode()));
1214 snprintf (buf, sizeof(buf), "0x%x", get_channel_mask());
1215 node.add_property("channel-mask", buf);
1217 if (_write_source && _session.get_record_enabled()) {
1219 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1220 XMLNode* cs_grandchild;
1222 cs_grandchild = new XMLNode (X_("file"));
1223 cs_grandchild->add_property (X_("path"), _write_source->path());
1224 cs_child->add_child_nocopy (*cs_grandchild);
1226 /* store the location where capture will start */
1230 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1231 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1233 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1236 cs_child->add_property (X_("at"), buf);
1237 node.add_child_nocopy (*cs_child);
1244 MidiDiskstream::set_state (const XMLNode& node, int version)
1246 const XMLProperty* prop;
1247 XMLNodeList nlist = node.children();
1248 XMLNodeIterator niter;
1249 XMLNode* capture_pending_node = 0;
1250 LocaleGuard lg (X_("POSIX"));
1252 /* prevent write sources from being created */
1254 in_set_state = true;
1256 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1257 assert ((*niter)->name() != IO::state_node_name);
1259 if ((*niter)->name() == X_("CapturingSources")) {
1260 capture_pending_node = *niter;
1264 if (Diskstream::set_state (node, version)) {
1268 ChannelMode channel_mode = AllChannels;
1269 if ((prop = node.property ("channel-mode")) != 0) {
1270 channel_mode = ChannelMode (string_2_enum(prop->value(), channel_mode));
1273 unsigned int channel_mask = 0xFFFF;
1274 if ((prop = node.property ("channel-mask")) != 0) {
1275 sscanf (prop->value().c_str(), "0x%x", &channel_mask);
1276 if (channel_mask & (~0xFFFF)) {
1277 warning << _("MidiDiskstream: XML property channel-mask out of range") << endmsg;
1282 if (capture_pending_node) {
1283 use_pending_capture_data (*capture_pending_node);
1286 set_channel_mode (channel_mode, channel_mask);
1288 in_set_state = false;
1294 MidiDiskstream::use_new_write_source (uint32_t n)
1296 if (!_session.writable() || !recordable()) {
1302 _write_source.reset();
1305 _write_source = boost::dynamic_pointer_cast<SMFSource>(
1306 _session.create_midi_source_for_session (0, name ()));
1308 if (!_write_source) {
1309 throw failed_constructor();
1313 catch (failed_constructor &err) {
1314 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1315 _write_source.reset();
1322 list<boost::shared_ptr<Source> >
1323 MidiDiskstream::steal_write_sources()
1325 list<boost::shared_ptr<Source> > ret;
1327 /* put some data on the disk, even if its just a header for an empty file.
1328 XXX should we not have a more direct method for doing this? Maybe not
1329 since we don't want to mess around with the model/disk relationship
1330 that the Source has to pay attention to.
1333 boost::dynamic_pointer_cast<MidiSource>(_write_source)->session_saved ();
1335 /* never let it go away */
1336 _write_source->mark_nonremovable ();
1338 ret.push_back (_write_source);
1342 use_new_write_source (0);
1348 MidiDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1350 if (!_session.writable() || !recordable()) {
1354 if (_write_source && mark_write_complete) {
1355 _write_source->mark_streaming_write_completed ();
1357 use_new_write_source (0);
1361 MidiDiskstream::rename_write_sources ()
1363 if (_write_source != 0) {
1364 _write_source->set_source_name (_name.val(), destructive());
1365 /* XXX what to do if this fails ? */
1371 MidiDiskstream::set_block_size (pframes_t /*nframes*/)
1376 MidiDiskstream::allocate_temporary_buffers ()
1381 MidiDiskstream::monitor_input (bool yn)
1384 _source_port->ensure_monitor_input (yn);
1388 MidiDiskstream::set_align_style_from_io ()
1390 bool have_physical = false;
1396 get_input_sources ();
1398 if (_source_port && _source_port->flags() & JackPortIsPhysical) {
1399 have_physical = true;
1402 if (have_physical) {
1403 set_align_style (ExistingMaterial);
1405 set_align_style (CaptureTime);
1411 MidiDiskstream::playback_buffer_load () const
1413 return (float) ((double) _playback_buf->read_space()/
1414 (double) _playback_buf->capacity());
1418 MidiDiskstream::capture_buffer_load () const
1420 return (float) ((double) _capture_buf->write_space()/
1421 (double) _capture_buf->capacity());
1425 MidiDiskstream::use_pending_capture_data (XMLNode& /*node*/)
1430 /** Writes playback events in the given range to \a dst, translating time stamps
1431 * so that an event at \a start has time = 0
1434 MidiDiskstream::get_playback (MidiBuffer& dst, framepos_t start, framepos_t end)
1437 assert(dst.size() == 0);
1439 // Reverse. ... We just don't do reverse, ok? Back off.
1444 // Translates stamps to be relative to start
1448 const size_t events_read = _playback_buf->read(dst, start, end);
1449 DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("%1 MDS events read %2 range %3 .. %4 rspace %5 wspace %6\n", _name, events_read, start, end,
1450 _playback_buf->read_space(), _playback_buf->write_space()));
1452 _playback_buf->read(dst, start, end);
1455 gint32 frames_read = end - start;
1456 g_atomic_int_add(&_frames_read_from_ringbuffer, frames_read);