2 Copyright (C) 2000-2003 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
32 #include "pbd/error.h"
33 #include "pbd/basename.h"
34 #include <glibmm/thread.h>
35 #include "pbd/xml++.h"
36 #include "pbd/memento_command.h"
37 #include "pbd/enumwriter.h"
38 #include "pbd/stateful_diff_command.h"
39 #include "pbd/stacktrace.h"
41 #include "ardour/ardour.h"
42 #include "ardour/audioengine.h"
43 #include "ardour/butler.h"
44 #include "ardour/configuration.h"
45 #include "ardour/cycle_timer.h"
46 #include "ardour/debug.h"
47 #include "ardour/io.h"
48 #include "ardour/midi_diskstream.h"
49 #include "ardour/midi_playlist.h"
50 #include "ardour/midi_port.h"
51 #include "ardour/midi_region.h"
52 #include "ardour/playlist_factory.h"
53 #include "ardour/region_factory.h"
54 #include "ardour/send.h"
55 #include "ardour/session.h"
56 #include "ardour/smf_source.h"
57 #include "ardour/utils.h"
58 #include "ardour/session_playlists.h"
59 #include "ardour/route.h"
61 #include "midi++/types.h"
67 using namespace ARDOUR;
70 nframes_t MidiDiskstream::midi_readahead = 4096;
72 MidiDiskstream::MidiDiskstream (Session &sess, const string &name, Diskstream::Flag flag)
73 : Diskstream(sess, name, flag)
77 , _last_flush_frame(0)
78 , _note_mode(Sustained)
79 , _frames_written_to_ringbuffer(0)
80 , _frames_read_from_ringbuffer(0)
82 /* prevent any write sources from being created */
88 use_new_write_source (0);
92 assert(!destructive());
95 MidiDiskstream::MidiDiskstream (Session& sess, const XMLNode& node)
96 : Diskstream(sess, node)
100 , _last_flush_frame(0)
101 , _note_mode(Sustained)
102 , _frames_written_to_ringbuffer(0)
103 , _frames_read_from_ringbuffer(0)
109 if (set_state (node, Stateful::loading_state_version)) {
110 in_set_state = false;
111 throw failed_constructor();
114 use_new_write_source (0);
116 in_set_state = false;
120 MidiDiskstream::init ()
122 /* there are no channels at this point, so these
123 two calls just get speed_buffer_size and wrap_buffer
124 size setup without duplicating their code.
127 set_block_size (_session.get_block_size());
128 allocate_temporary_buffers ();
130 const size_t size = _session.butler()->midi_diskstream_buffer_size();
131 _playback_buf = new MidiRingBuffer<nframes_t>(size);
132 _capture_buf = new MidiRingBuffer<nframes_t>(size);
134 _n_channels = ChanCount(DataType::MIDI, 1);
136 assert(recordable());
139 MidiDiskstream::~MidiDiskstream ()
141 Glib::Mutex::Lock lm (state_lock);
146 MidiDiskstream::non_realtime_locate (nframes_t position)
149 _write_source->set_timeline_position (position);
151 seek(position, false);
156 MidiDiskstream::non_realtime_input_change ()
159 Glib::Mutex::Lock lm (state_lock);
161 if (input_change_pending == NoChange) {
165 if (input_change_pending & ConfigurationChanged) {
166 if (_io->n_ports().n_midi() != _n_channels.n_midi()) {
167 error << "Can not feed IO " << _io->n_ports()
168 << " with diskstream " << _n_channels << endl;
172 get_input_sources ();
173 set_capture_offset ();
175 if (first_input_change) {
176 set_align_style (_persistent_alignment_style);
177 first_input_change = false;
179 set_align_style_from_io ();
182 input_change_pending = NoChange;
184 /* implicit unlock */
187 /* unlike with audio, there is never any need to reset write sources
188 based on input configuration changes because ... a MIDI track
189 has just 1 MIDI port as input, always.
192 /* now refill channel buffers */
194 if (speed() != 1.0f || speed() != -1.0f) {
195 seek ((nframes_t) (_session.transport_frame() * (double) speed()));
198 seek (_session.transport_frame());
201 _last_flush_frame = _session.transport_frame();
205 MidiDiskstream::get_input_sources ()
207 uint32_t ni = _io->n_ports().n_midi();
213 // This is all we do for now at least
216 _source_port = _io->midi(0);
222 MidiDiskstream::find_and_use_playlist (const string& name)
224 boost::shared_ptr<MidiPlaylist> playlist;
226 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (_session.playlists->by_name (name))) == 0) {
227 playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (DataType::MIDI, _session, name));
231 error << string_compose(_("MidiDiskstream: Playlist \"%1\" isn't an midi playlist"), name) << endmsg;
235 return use_playlist (playlist);
239 MidiDiskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
241 assert(boost::dynamic_pointer_cast<MidiPlaylist>(playlist));
243 Diskstream::use_playlist(playlist);
249 MidiDiskstream::use_new_playlist ()
252 boost::shared_ptr<MidiPlaylist> playlist;
254 if (!in_set_state && destructive()) {
259 newname = Playlist::bump_name (_playlist->name(), _session);
261 newname = Playlist::bump_name (_name, _session);
264 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (
265 DataType::MIDI, _session, newname, hidden()))) != 0) {
267 playlist->set_orig_diskstream_id (id());
268 return use_playlist (playlist);
276 MidiDiskstream::use_copy_playlist ()
278 assert(midi_playlist());
284 if (_playlist == 0) {
285 error << string_compose(_("MidiDiskstream %1: there is no existing playlist to make a copy of!"), _name) << endmsg;
290 boost::shared_ptr<MidiPlaylist> playlist;
292 newname = Playlist::bump_name (_playlist->name(), _session);
294 if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist>(PlaylistFactory::create (midi_playlist(), newname))) != 0) {
295 playlist->set_orig_diskstream_id (id());
296 return use_playlist (playlist);
302 /** Overloaded from parent to die horribly
305 MidiDiskstream::set_destructive (bool yn)
307 assert( ! destructive());
313 MidiDiskstream::set_note_mode (NoteMode m)
316 midi_playlist()->set_note_mode(m);
317 if (_write_source && _write_source->model())
318 _write_source->model()->set_note_mode(m);
323 trace_midi (ostream& o, MIDI::byte *msg, size_t len)
325 using namespace MIDI;
327 const char trace_prefix = ':';
329 type = (eventType) (msg[0]&0xF0);
336 << " NoteOff NoteNum "
347 << " NoteOn NoteNum "
363 case MIDI::controller:
378 << " Program Change ProgNum "
387 << " Channel Pressure "
392 case MIDI::pitchbend:
397 << ((msg[2]<<7)|msg[1])
436 << "System Exclusive (1 byte : " << hex << (int) *msg << dec << ')'
442 << "System Exclusive (" << len << ") = [ " << hex;
443 for (unsigned int i = 0; i < len; ++i) {
444 o << (int) msg[i] << ' ';
446 o << dec << ']' << endl;
452 o << trace_prefix << "Song" << endl;
456 o << trace_prefix << "Tune" << endl;
460 o << trace_prefix << "End-of-System Exclusive" << endl;
464 o << trace_prefix << "Timing" << endl;
468 o << trace_prefix << "Start" << endl;
472 o << trace_prefix << "Stop" << endl;
476 o << trace_prefix << "Continue" << endl;
480 o << trace_prefix << "Active Sense" << endl;
484 o << trace_prefix << "Unrecognized MIDI message" << endl;
491 MidiDiskstream::process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input, bool& need_butler)
494 nframes_t rec_offset = 0;
495 nframes_t rec_nframes = 0;
496 bool nominally_recording;
497 bool re = record_enabled ();
499 playback_distance = 0;
501 check_record_status (transport_frame, nframes, can_record);
503 nominally_recording = (can_record && re);
509 Glib::Mutex::Lock sm (state_lock, Glib::TRY_LOCK);
515 adjust_capture_position = 0;
517 if (nominally_recording || (_session.get_record_enabled() && _session.config.get_punch_in())) {
518 OverlapType ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
520 calculate_record_range(ot, transport_frame, nframes, rec_nframes, rec_offset);
522 if (rec_nframes && !was_recording) {
523 capture_captured = 0;
524 was_recording = true;
529 if (can_record && !_last_capture_sources.empty()) {
530 _last_capture_sources.clear ();
533 if (nominally_recording || rec_nframes) {
535 // Pump entire port buffer into the ring buffer (FIXME: split cycles?)
536 MidiBuffer& buf = _source_port->get_midi_buffer(nframes);
537 for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
538 const Evoral::MIDIEvent<MidiBuffer::TimeType> ev(*i, false);
540 _capture_buf->write(ev.time() + transport_frame, ev.type(), ev.size(), ev.buffer());
546 finish_capture (rec_monitors_input);
553 /* data will be written to disk */
555 if (rec_nframes == nframes && rec_offset == 0) {
556 playback_distance = nframes;
559 adjust_capture_position = rec_nframes;
561 } else if (nominally_recording) {
563 /* XXXX do this for MIDI !!!
564 can't do actual capture yet - waiting for latency effects to finish before we start
567 playback_distance = nframes;
573 if (commit (nframes)) {
581 MidiDiskstream::commit (nframes_t nframes)
583 bool need_butler = false;
585 if (_actual_speed < 0.0) {
586 playback_sample -= playback_distance;
588 playback_sample += playback_distance;
591 if (adjust_capture_position != 0) {
592 capture_captured += adjust_capture_position;
593 adjust_capture_position = 0;
596 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
597 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
598 if ((frames_written - frames_read) + nframes < midi_readahead) {
602 /*cerr << "MDS written: " << frames_written << " - read: " << frames_read <<
603 " = " << frames_written - frames_read
604 << " + " << nframes << " < " << midi_readahead << " = " << need_butler << ")" << endl;*/
610 MidiDiskstream::set_pending_overwrite (bool yn)
612 /* called from audio thread, so we can use the read ptr and playback sample as we wish */
614 _pending_overwrite = yn;
616 overwrite_frame = playback_sample;
620 MidiDiskstream::overwrite_existing_buffers ()
622 //read(overwrite_frame, disk_io_chunk_frames, false);
623 overwrite_queued = false;
624 _pending_overwrite = false;
630 MidiDiskstream::seek (nframes_t frame, bool complete_refill)
632 Glib::Mutex::Lock lm (state_lock);
635 _playback_buf->reset();
636 _capture_buf->reset();
637 g_atomic_int_set(&_frames_read_from_ringbuffer, 0);
638 g_atomic_int_set(&_frames_written_to_ringbuffer, 0);
640 playback_sample = frame;
643 if (complete_refill) {
644 while ((ret = do_refill_with_alloc ()) > 0) ;
646 ret = do_refill_with_alloc ();
653 MidiDiskstream::can_internal_playback_seek (nframes_t distance)
655 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
656 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
657 return ((frames_written - frames_read) < distance);
661 MidiDiskstream::internal_playback_seek (nframes_t distance)
663 first_recordable_frame += distance;
664 playback_sample += distance;
669 /** @a start is set to the new frame position (TIME) read up to */
671 MidiDiskstream::read (nframes_t& start, nframes_t dur, bool reversed)
673 nframes_t this_read = 0;
675 nframes_t loop_end = 0;
676 nframes_t loop_start = 0;
681 nframes_t loop_length = 0;
683 /* Make the use of a Location atomic for this read operation.
685 Note: Locations don't get deleted, so all we care about
686 when I say "atomic" is that we are always pointing to
687 the same one and using a start/length values obtained
691 if ((loc = loop_location) != 0) {
692 loop_start = loc->start();
693 loop_end = loc->end();
694 loop_length = loop_end - loop_start;
697 /* if we are looping, ensure that the first frame we read is at the correct
698 position within the loop.
701 if (loc && (start >= loop_end)) {
702 //cerr << "start adjusted from " << start;
703 start = loop_start + ((start - loop_start) % loop_length);
704 //cerr << "to " << start << endl;
706 //cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl;
711 /* take any loop into account. we can't read past the end of the loop. */
713 if (loc && (loop_end - start < dur)) {
714 this_read = loop_end - start;
715 //cerr << "reloop true: thisread: " << this_read << " dur: " << dur << endl;
722 if (this_read == 0) {
726 this_read = min(dur,this_read);
728 if (midi_playlist()->read (*_playback_buf, start, this_read) != this_read) {
729 error << string_compose(
730 _("MidiDiskstream %1: cannot read %2 from playlist at frame %3"),
731 _id, this_read, start) << endmsg;
735 g_atomic_int_add(&_frames_written_to_ringbuffer, this_read);
737 _read_data_count = _playlist->read_data_count();
741 // Swap note ons with note offs here. etc?
742 // Fully reversing MIDI requires look-ahead (well, behind) to find previous
743 // CC values etc. hard.
747 /* if we read to the end of the loop, go back to the beginning */
750 // Synthesize LoopEvent here, because the next events
751 // written will have non-monotonic timestamps.
752 _playback_buf->write(loop_end - 1, LoopEventType, 0, 0);
753 cout << "Pushing LoopEvent ts=" << loop_end-1
754 << " start+this_read " << start+this_read << endl;
763 //offset += this_read;
770 MidiDiskstream::do_refill_with_alloc ()
776 MidiDiskstream::do_refill ()
779 size_t write_space = _playback_buf->write_space();
780 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
782 if (write_space == 0) {
790 /* at end: nothing to do */
791 if (file_frame == max_frames) {
795 // At this point we...
796 assert(_playback_buf->write_space() > 0); // ... have something to write to, and
797 assert(file_frame <= max_frames); // ... something to write
799 // now calculate how much time is in the ringbuffer.
800 // and lets write as much as we need to get this to be midi_readahead;
801 uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
802 uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
803 if ((frames_written - frames_read) >= midi_readahead) {
804 //cout << "MDS Nothing to do. all fine" << endl;
808 nframes_t to_read = midi_readahead - (frames_written - frames_read);
810 //cout << "MDS read for midi_readahead " << to_read << " rb_contains: "
811 // << frames_written - frames_read << endl;
813 to_read = min(to_read, (max_frames - file_frame));
815 if (read (file_frame, to_read, reversed)) {
822 /** Flush pending data to disk.
824 * Important note: this function will write *AT MOST* disk_io_chunk_frames
825 * of data to disk. it will never write more than that. If it writes that
826 * much and there is more than that waiting to be written, it will return 1,
827 * otherwise 0 on success or -1 on failure.
829 * If there is less than disk_io_chunk_frames to be written, no data will be
830 * written at all unless @a force_flush is true.
833 MidiDiskstream::do_flush (RunContext /*context*/, bool force_flush)
839 _write_data_count = 0;
841 total = _session.transport_frame() - _last_flush_frame;
843 if (_last_flush_frame > _session.transport_frame()
844 || _last_flush_frame < capture_start_frame) {
845 _last_flush_frame = _session.transport_frame();
848 if (total == 0 || _capture_buf->read_space() == 0
849 || (!force_flush && (total < disk_io_chunk_frames && was_recording))) {
853 /* if there are 2+ chunks of disk i/o possible for
854 this track, let the caller know so that it can arrange
855 for us to be called again, ASAP.
857 if we are forcing a flush, then if there is* any* extra
858 work, let the caller know.
860 if we are no longer recording and there is any extra work,
861 let the caller know too.
864 if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) {
868 to_write = disk_io_chunk_frames;
870 assert(!destructive());
873 && ( (_session.transport_frame() - _last_flush_frame > disk_io_chunk_frames)
875 if ((!_write_source) || _write_source->midi_write (*_capture_buf, capture_start_frame, to_write) != to_write) {
876 error << string_compose(_("MidiDiskstream %1: cannot write to disk"), _id) << endmsg;
879 _last_flush_frame = _session.transport_frame();
888 MidiDiskstream::transport_stopped_wallclock (struct tm& /*when*/, time_t /*twhen*/, bool abort_capture)
890 bool more_work = true;
892 boost::shared_ptr<MidiRegion> region;
893 MidiRegion::SourceList srcs;
894 MidiRegion::SourceList::iterator src;
895 vector<CaptureInfo*>::iterator ci;
896 bool mark_write_completed = false;
898 finish_capture (true);
900 /* butler is already stopped, but there may be work to do
901 to flush remaining data to disk.
904 while (more_work && !err) {
905 switch (do_flush (TransportContext, true)) {
912 error << string_compose(_("MidiDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
917 /* XXX is there anything we can do if err != 0 ? */
918 Glib::Mutex::Lock lm (capture_info_lock);
920 if (capture_info.empty()) {
928 _write_source->mark_for_remove ();
929 _write_source.reset();
932 /* new source set up in "out" below */
936 assert(_write_source);
938 nframes_t total_capture = 0;
939 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
940 total_capture += (*ci)->frames;
943 if (_write_source->length (capture_info.front()->start) != 0) {
945 /* phew, we have data */
947 /* figure out the name for this take */
949 srcs.push_back (_write_source);
951 _write_source->set_timeline_position (capture_info.front()->start);
952 _write_source->set_captured_for (_name);
954 /* flush to disk: this step differs from the audio path,
955 where all the data is already on disk.
958 _write_source->mark_streaming_write_completed ();
960 /* we will want to be able to keep (over)writing the source
961 but we don't want it to be removable. this also differs
962 from the audio situation, where the source at this point
963 must be considered immutable
966 _write_source->mark_nonremovable ();
968 string whole_file_region_name;
969 whole_file_region_name = region_name_from_path (_write_source->name(), true);
971 /* Register a new region with the Session that
972 describes the entire source. Do this first
973 so that any sub-regions will obviously be
974 children of this one (later!)
980 plist.add (Properties::name, whole_file_region_name);
981 plist.add (Properties::whole_file, true);
982 plist.add (Properties::automatic, true);
983 plist.add (Properties::start, 0);
984 plist.add (Properties::length, total_capture);
985 plist.add (Properties::layer, 0);
987 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
989 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
990 region->special_set_position (capture_info.front()->start);
994 catch (failed_constructor& err) {
995 error << string_compose(_("%1: could not create region for complete midi file"), _name) << endmsg;
999 _last_capture_sources.insert (_last_capture_sources.end(), srcs.begin(), srcs.end());
1001 _playlist->clear_history ();
1002 _playlist->freeze ();
1004 uint32_t buffer_position = 0;
1005 for (buffer_position = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1009 RegionFactory::region_name (region_name, _write_source->name(), false);
1011 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
1016 plist.add (Properties::start, buffer_position);
1017 plist.add (Properties::length, (*ci)->frames);
1018 plist.add (Properties::name, region_name);
1020 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1021 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1024 catch (failed_constructor& err) {
1025 error << _("MidiDiskstream: could not create region for captured midi!") << endmsg;
1026 continue; /* XXX is this OK? */
1029 // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
1031 i_am_the_modifier++;
1032 _playlist->add_region (region, (*ci)->start);
1033 i_am_the_modifier--;
1035 buffer_position += (*ci)->frames;
1039 _session.add_command (new StatefulDiffCommand(_playlist));
1042 mark_write_completed = true;
1045 use_new_write_source (0);
1047 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1052 midi_playlist()->clear_note_trackers ();
1055 capture_info.clear ();
1056 capture_start_frame = 0;
1060 MidiDiskstream::transport_looped (nframes_t transport_frame)
1062 if (was_recording) {
1064 // adjust the capture length knowing that the data will be recorded to disk
1065 // only necessary after the first loop where we're recording
1066 if (capture_info.size() == 0) {
1067 capture_captured += _capture_offset;
1069 if (_alignment_style == ExistingMaterial) {
1070 capture_captured += _session.worst_output_latency();
1072 capture_captured += _roll_delay;
1076 finish_capture (true);
1078 // the next region will start recording via the normal mechanism
1079 // we'll set the start position to the current transport pos
1080 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1081 capture_start_frame = transport_frame;
1082 first_recordable_frame = transport_frame; // mild lie
1083 last_recordable_frame = max_frames;
1084 was_recording = true;
1089 MidiDiskstream::finish_capture (bool /*rec_monitors_input*/)
1091 was_recording = false;
1093 if (capture_captured == 0) {
1097 // Why must we destroy?
1098 assert(!destructive());
1100 CaptureInfo* ci = new CaptureInfo;
1102 ci->start = capture_start_frame;
1103 ci->frames = capture_captured;
1105 /* XXX theoretical race condition here. Need atomic exchange ?
1106 However, the circumstances when this is called right
1107 now (either on record-disable or transport_stopped)
1108 mean that no actual race exists. I think ...
1109 We now have a capture_info_lock, but it is only to be used
1110 to synchronize in the transport_stop and the capture info
1111 accessors, so that invalidation will not occur (both non-realtime).
1114 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1116 capture_info.push_back (ci);
1117 capture_captured = 0;
1121 MidiDiskstream::set_record_enabled (bool yn)
1123 if (!recordable() || !_session.record_enabling_legal()) {
1127 assert(!destructive());
1129 /* yes, i know that this not proof against race conditions, but its
1130 good enough. i think.
1133 if (record_enabled() != yn) {
1135 engage_record_enable ();
1137 disengage_record_enable ();
1143 MidiDiskstream::engage_record_enable ()
1145 bool rolling = _session.transport_speed() != 0.0f;
1147 g_atomic_int_set (&_record_enabled, 1);
1149 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1150 _source_port->request_monitor_input (!(_session.config.get_auto_input() && rolling));
1153 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1155 RecordEnableChanged (); /* EMIT SIGNAL */
1159 MidiDiskstream::disengage_record_enable ()
1161 g_atomic_int_set (&_record_enabled, 0);
1162 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1164 _source_port->request_monitor_input (false);
1168 RecordEnableChanged (); /* EMIT SIGNAL */
1172 MidiDiskstream::get_state ()
1174 XMLNode* node = new XMLNode ("Diskstream");
1176 LocaleGuard lg (X_("POSIX"));
1178 snprintf (buf, sizeof(buf), "0x%x", _flags);
1179 node->add_property ("flags", buf);
1181 node->add_property("channel-mode", enum_2_string(get_channel_mode()));
1183 snprintf (buf, sizeof(buf), "0x%x", get_channel_mask());
1184 node->add_property("channel-mask", buf);
1186 node->add_property ("playlist", _playlist->name());
1188 snprintf (buf, sizeof(buf), "%f", _visible_speed);
1189 node->add_property ("speed", buf);
1191 node->add_property("name", _name);
1192 id().print(buf, sizeof(buf));
1193 node->add_property("id", buf);
1195 if (_write_source && _session.get_record_enabled()) {
1197 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1198 XMLNode* cs_grandchild;
1200 cs_grandchild = new XMLNode (X_("file"));
1201 cs_grandchild->add_property (X_("path"), _write_source->path());
1202 cs_child->add_child_nocopy (*cs_grandchild);
1204 /* store the location where capture will start */
1208 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1209 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1211 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1214 cs_child->add_property (X_("at"), buf);
1215 node->add_child_nocopy (*cs_child);
1219 node->add_child_copy (*_extra_xml);
1226 MidiDiskstream::set_state (const XMLNode& node, int /*version*/)
1228 const XMLProperty* prop;
1229 XMLNodeList nlist = node.children();
1230 XMLNodeIterator niter;
1231 XMLNode* capture_pending_node = 0;
1232 LocaleGuard lg (X_("POSIX"));
1234 in_set_state = true;
1236 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1237 /*if ((*niter)->name() == IO::state_node_name) {
1238 deprecated_io_node = new XMLNode (**niter);
1240 assert ((*niter)->name() != IO::state_node_name);
1242 if ((*niter)->name() == X_("CapturingSources")) {
1243 capture_pending_node = *niter;
1247 /* prevent write sources from being created */
1249 in_set_state = true;
1251 if ((prop = node.property ("name")) != 0) {
1252 _name = prop->value();
1255 if ((prop = node.property ("id")) != 0) {
1256 _id = prop->value ();
1259 if ((prop = node.property ("flags")) != 0) {
1260 _flags = Flag (string_2_enum (prop->value(), _flags));
1263 ChannelMode channel_mode = AllChannels;
1264 if ((prop = node.property ("channel-mode")) != 0) {
1265 channel_mode = ChannelMode (string_2_enum(prop->value(), channel_mode));
1268 unsigned int channel_mask = 0xFFFF;
1269 if ((prop = node.property ("channel-mask")) != 0) {
1270 sscanf (prop->value().c_str(), "0x%x", &channel_mask);
1271 if (channel_mask & (~0xFFFF)) {
1272 warning << _("MidiDiskstream: XML property channel-mask out of range") << endmsg;
1276 set_channel_mode(channel_mode, channel_mask);
1278 if ((prop = node.property ("playlist")) == 0) {
1283 bool had_playlist = (_playlist != 0);
1285 if (find_and_use_playlist (prop->value())) {
1289 if (!had_playlist) {
1290 _playlist->set_orig_diskstream_id (id());
1293 if (capture_pending_node) {
1294 use_pending_capture_data (*capture_pending_node);
1299 if ((prop = node.property ("speed")) != 0) {
1300 double sp = atof (prop->value().c_str());
1302 if (realtime_set_speed (sp, false)) {
1303 non_realtime_set_speed ();
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>(_session.create_midi_source_for_session (0, name ()));
1325 if (!_write_source) {
1326 throw failed_constructor();
1330 catch (failed_constructor &err) {
1331 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1332 _write_source.reset();
1336 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1341 list<boost::shared_ptr<Source> >
1342 MidiDiskstream::steal_write_sources()
1344 list<boost::shared_ptr<Source> > ret;
1345 ret.push_back (_write_source);
1346 use_new_write_source (0);
1351 MidiDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1353 if (!_session.writable() || !recordable()) {
1357 if (_write_source && mark_write_complete) {
1358 _write_source->mark_streaming_write_completed ();
1360 use_new_write_source (0);
1364 MidiDiskstream::rename_write_sources ()
1366 if (_write_source != 0) {
1367 _write_source->set_source_name (_name.val(), destructive());
1368 /* XXX what to do if this fails ? */
1374 MidiDiskstream::set_block_size (nframes_t /*nframes*/)
1379 MidiDiskstream::allocate_temporary_buffers ()
1384 MidiDiskstream::monitor_input (bool yn)
1387 _source_port->ensure_monitor_input (yn);
1391 MidiDiskstream::set_align_style_from_io ()
1393 bool have_physical = false;
1399 get_input_sources ();
1401 if (_source_port && _source_port->flags() & JackPortIsPhysical) {
1402 have_physical = true;
1405 if (have_physical) {
1406 set_align_style (ExistingMaterial);
1408 set_align_style (CaptureTime);
1414 MidiDiskstream::playback_buffer_load () const
1416 return (float) ((double) _playback_buf->read_space()/
1417 (double) _playback_buf->capacity());
1421 MidiDiskstream::capture_buffer_load () const
1423 return (float) ((double) _capture_buf->write_space()/
1424 (double) _capture_buf->capacity());
1428 MidiDiskstream::use_pending_capture_data (XMLNode& /*node*/)
1433 /** Writes playback events in the given range to \a dst, translating time stamps
1434 * so that an event at \a start has time = 0
1437 MidiDiskstream::get_playback (MidiBuffer& dst, nframes_t start, nframes_t end)
1440 assert(dst.size() == 0);
1442 // Reverse. ... We just don't do reverse, ok? Back off.
1447 // Translates stamps to be relative to start
1451 const size_t events_read = _playback_buf->read(dst, start, end);
1452 DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("%1 MDS events read %2 range %3 .. %4 rspace %5 wspace %6\n", _name, events_read, start, end,
1453 _playback_buf->read_space(), _playback_buf->write_space()));
1455 _playback_buf->read(dst, start, end);
1458 gint32 frames_read = end - start;
1459 g_atomic_int_add(&_frames_read_from_ringbuffer, frames_read);