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.reset();
949 /* new source set up in "out" below */
953 assert(_write_source);
955 framecnt_t total_capture = 0;
956 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
957 total_capture += (*ci)->frames;
960 if (_write_source->length (capture_info.front()->start) != 0) {
962 /* phew, we have data */
964 /* figure out the name for this take */
966 srcs.push_back (_write_source);
968 _write_source->set_timeline_position (capture_info.front()->start);
969 _write_source->set_captured_for (_name);
971 /* flush to disk: this step differs from the audio path,
972 where all the data is already on disk.
975 _write_source->mark_streaming_write_completed ();
977 /* set length in beats to entire capture length */
979 BeatsFramesConverter converter (_session.tempo_map(), capture_info.front()->start);
980 const double total_capture_beats = converter.from(total_capture);
981 _write_source->set_length_beats(total_capture_beats);
983 /* make it not a stub anymore */
985 _write_source->unstubify ();
987 /* we will want to be able to keep (over)writing the source
988 but we don't want it to be removable. this also differs
989 from the audio situation, where the source at this point
990 must be considered immutable. luckily, we can rely on
991 MidiSource::mark_streaming_write_completed() to have
992 already done the necessary work for that.
995 string whole_file_region_name;
996 whole_file_region_name = region_name_from_path (_write_source->name(), true);
998 /* Register a new region with the Session that
999 describes the entire source. Do this first
1000 so that any sub-regions will obviously be
1001 children of this one (later!)
1007 plist.add (Properties::name, whole_file_region_name);
1008 plist.add (Properties::whole_file, true);
1009 plist.add (Properties::automatic, true);
1010 plist.add (Properties::start, 0);
1011 plist.add (Properties::length, total_capture);
1012 plist.add (Properties::layer, 0);
1014 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1016 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1017 region->special_set_position (capture_info.front()->start);
1021 catch (failed_constructor& err) {
1022 error << string_compose(_("%1: could not create region for complete midi file"), _name) << endmsg;
1026 _last_capture_sources.insert (_last_capture_sources.end(), srcs.begin(), srcs.end());
1028 _playlist->clear_changes ();
1029 _playlist->freeze ();
1031 /* Session frame time of the initial capture in this pass, which is where the source starts */
1032 framepos_t initial_capture = 0;
1033 if (!capture_info.empty()) {
1034 initial_capture = capture_info.front()->start;
1037 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1041 RegionFactory::region_name (region_name, _write_source->name(), false);
1043 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
1048 /* start of this region is the offset between the start of its capture and the start of the whole pass */
1049 plist.add (Properties::start, (*ci)->start - initial_capture);
1050 plist.add (Properties::length, (*ci)->frames);
1051 plist.add (Properties::length_beats, converter.from((*ci)->frames));
1052 plist.add (Properties::name, region_name);
1054 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1055 region = boost::dynamic_pointer_cast<MidiRegion> (rx);
1058 catch (failed_constructor& err) {
1059 error << _("MidiDiskstream: could not create region for captured midi!") << endmsg;
1060 continue; /* XXX is this OK? */
1063 // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
1065 i_am_the_modifier++;
1066 _playlist->add_region (region, (*ci)->start);
1067 i_am_the_modifier--;
1071 _session.add_command (new StatefulDiffCommand(_playlist));
1074 mark_write_completed = true;
1077 use_new_write_source (0);
1079 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1084 midi_playlist()->clear_note_trackers ();
1087 capture_info.clear ();
1088 capture_start_frame = 0;
1092 MidiDiskstream::transport_looped (framepos_t transport_frame)
1094 if (was_recording) {
1096 // adjust the capture length knowing that the data will be recorded to disk
1097 // only necessary after the first loop where we're recording
1098 if (capture_info.size() == 0) {
1099 capture_captured += _capture_offset;
1101 if (_alignment_style == ExistingMaterial) {
1102 capture_captured += _session.worst_output_latency();
1104 capture_captured += _roll_delay;
1108 finish_capture (true);
1110 // the next region will start recording via the normal mechanism
1111 // we'll set the start position to the current transport pos
1112 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1113 capture_start_frame = transport_frame;
1114 first_recordable_frame = transport_frame; // mild lie
1115 last_recordable_frame = max_framepos;
1116 was_recording = true;
1121 MidiDiskstream::finish_capture (bool /*rec_monitors_input*/)
1123 was_recording = false;
1125 if (capture_captured == 0) {
1129 // Why must we destroy?
1130 assert(!destructive());
1132 CaptureInfo* ci = new CaptureInfo;
1134 ci->start = capture_start_frame;
1135 ci->frames = capture_captured;
1137 /* XXX theoretical race condition here. Need atomic exchange ?
1138 However, the circumstances when this is called right
1139 now (either on record-disable or transport_stopped)
1140 mean that no actual race exists. I think ...
1141 We now have a capture_info_lock, but it is only to be used
1142 to synchronize in the transport_stop and the capture info
1143 accessors, so that invalidation will not occur (both non-realtime).
1146 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1148 capture_info.push_back (ci);
1149 capture_captured = 0;
1153 MidiDiskstream::set_record_enabled (bool yn)
1155 if (!recordable() || !_session.record_enabling_legal()) {
1159 assert(!destructive());
1161 /* yes, i know that this not proof against race conditions, but its
1162 good enough. i think.
1165 if (record_enabled() != yn) {
1167 engage_record_enable ();
1169 disengage_record_enable ();
1175 MidiDiskstream::engage_record_enable ()
1177 bool const rolling = _session.transport_speed() != 0.0f;
1179 g_atomic_int_set (&_record_enabled, 1);
1181 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1182 _source_port->request_monitor_input (!(_session.config.get_auto_input() && rolling));
1185 RecordEnableChanged (); /* EMIT SIGNAL */
1189 MidiDiskstream::disengage_record_enable ()
1191 g_atomic_int_set (&_record_enabled, 0);
1192 if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
1194 _source_port->request_monitor_input (false);
1198 RecordEnableChanged (); /* EMIT SIGNAL */
1202 MidiDiskstream::get_state ()
1204 XMLNode* node = new XMLNode ("Diskstream");
1206 LocaleGuard lg (X_("POSIX"));
1208 snprintf (buf, sizeof(buf), "0x%x", _flags);
1209 node->add_property ("flags", buf);
1211 node->add_property("channel-mode", enum_2_string(get_channel_mode()));
1213 snprintf (buf, sizeof(buf), "0x%x", get_channel_mask());
1214 node->add_property("channel-mask", buf);
1216 node->add_property ("playlist", _playlist->name());
1218 snprintf (buf, sizeof(buf), "%f", _visible_speed);
1219 node->add_property ("speed", buf);
1221 node->add_property("name", _name);
1222 id().print(buf, sizeof(buf));
1223 node->add_property("id", buf);
1225 if (_write_source && _session.get_record_enabled()) {
1227 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1228 XMLNode* cs_grandchild;
1230 cs_grandchild = new XMLNode (X_("file"));
1231 cs_grandchild->add_property (X_("path"), _write_source->path());
1232 cs_child->add_child_nocopy (*cs_grandchild);
1234 /* store the location where capture will start */
1238 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1239 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1241 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1244 cs_child->add_property (X_("at"), buf);
1245 node->add_child_nocopy (*cs_child);
1249 node->add_child_copy (*_extra_xml);
1256 MidiDiskstream::set_state (const XMLNode& node, int /*version*/)
1258 const XMLProperty* prop;
1259 XMLNodeList nlist = node.children();
1260 XMLNodeIterator niter;
1261 XMLNode* capture_pending_node = 0;
1262 LocaleGuard lg (X_("POSIX"));
1264 in_set_state = true;
1266 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1267 /*if ((*niter)->name() == IO::state_node_name) {
1268 deprecated_io_node = new XMLNode (**niter);
1270 assert ((*niter)->name() != IO::state_node_name);
1272 if ((*niter)->name() == X_("CapturingSources")) {
1273 capture_pending_node = *niter;
1277 /* prevent write sources from being created */
1279 in_set_state = true;
1281 if ((prop = node.property ("name")) != 0) {
1282 _name = prop->value();
1285 if ((prop = node.property ("id")) != 0) {
1286 _id = prop->value ();
1289 if ((prop = node.property ("flags")) != 0) {
1290 _flags = Flag (string_2_enum (prop->value(), _flags));
1293 ChannelMode channel_mode = AllChannels;
1294 if ((prop = node.property ("channel-mode")) != 0) {
1295 channel_mode = ChannelMode (string_2_enum(prop->value(), channel_mode));
1298 unsigned int channel_mask = 0xFFFF;
1299 if ((prop = node.property ("channel-mask")) != 0) {
1300 sscanf (prop->value().c_str(), "0x%x", &channel_mask);
1301 if (channel_mask & (~0xFFFF)) {
1302 warning << _("MidiDiskstream: XML property channel-mask out of range") << endmsg;
1306 set_channel_mode(channel_mode, channel_mask);
1308 if ((prop = node.property ("playlist")) == 0) {
1313 bool had_playlist = (_playlist != 0);
1315 if (find_and_use_playlist (prop->value())) {
1319 if (!had_playlist) {
1320 _playlist->set_orig_diskstream_id (id());
1323 if (capture_pending_node) {
1324 use_pending_capture_data (*capture_pending_node);
1329 if ((prop = node.property ("speed")) != 0) {
1330 double sp = atof (prop->value().c_str());
1332 if (realtime_set_speed (sp, false)) {
1333 non_realtime_set_speed ();
1337 in_set_state = false;
1343 MidiDiskstream::use_new_write_source (uint32_t n)
1345 if (!_session.writable() || !recordable()) {
1351 _write_source.reset();
1354 /* file starts off as a stub file, it will be converted
1355 when we're done with a capture pass, or when "stolen"
1359 _write_source = boost::dynamic_pointer_cast<SMFSource>(
1360 _session.create_midi_source_for_session (0, name (), true));
1362 if (!_write_source) {
1363 throw failed_constructor();
1367 catch (failed_constructor &err) {
1368 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1369 _write_source.reset();
1373 _write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
1378 list<boost::shared_ptr<Source> >
1379 MidiDiskstream::steal_write_sources()
1381 list<boost::shared_ptr<Source> > ret;
1383 /* put some data on the disk, even if its just a header for an empty file.
1384 XXX should we not have a more direct method for doing this? Maybe not
1385 since we don't want to mess around with the model/disk relationship
1386 that the Source has to pay attention to.
1389 boost::dynamic_pointer_cast<MidiSource>(_write_source)->session_saved ();
1391 /* make it visible/present */
1392 _write_source->unstubify ();
1393 /* never let it go away */
1394 _write_source->mark_nonremovable ();
1396 ret.push_back (_write_source);
1400 use_new_write_source (0);
1406 MidiDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1408 if (!_session.writable() || !recordable()) {
1412 if (_write_source && mark_write_complete) {
1413 _write_source->mark_streaming_write_completed ();
1415 use_new_write_source (0);
1419 MidiDiskstream::rename_write_sources ()
1421 if (_write_source != 0) {
1422 _write_source->set_source_name (_name.val(), destructive());
1423 /* XXX what to do if this fails ? */
1429 MidiDiskstream::set_block_size (pframes_t /*nframes*/)
1434 MidiDiskstream::allocate_temporary_buffers ()
1439 MidiDiskstream::monitor_input (bool yn)
1442 _source_port->ensure_monitor_input (yn);
1446 MidiDiskstream::set_align_style_from_io ()
1448 bool have_physical = false;
1454 get_input_sources ();
1456 if (_source_port && _source_port->flags() & JackPortIsPhysical) {
1457 have_physical = true;
1460 if (have_physical) {
1461 set_align_style (ExistingMaterial);
1463 set_align_style (CaptureTime);
1469 MidiDiskstream::playback_buffer_load () const
1471 return (float) ((double) _playback_buf->read_space()/
1472 (double) _playback_buf->capacity());
1476 MidiDiskstream::capture_buffer_load () const
1478 return (float) ((double) _capture_buf->write_space()/
1479 (double) _capture_buf->capacity());
1483 MidiDiskstream::use_pending_capture_data (XMLNode& /*node*/)
1488 /** Writes playback events in the given range to \a dst, translating time stamps
1489 * so that an event at \a start has time = 0
1492 MidiDiskstream::get_playback (MidiBuffer& dst, framepos_t start, framepos_t end)
1495 assert(dst.size() == 0);
1497 // Reverse. ... We just don't do reverse, ok? Back off.
1502 // Translates stamps to be relative to start
1506 const size_t events_read = _playback_buf->read(dst, start, end);
1507 DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("%1 MDS events read %2 range %3 .. %4 rspace %5 wspace %6\n", _name, events_read, start, end,
1508 _playback_buf->read_space(), _playback_buf->write_space()));
1510 _playback_buf->read(dst, start, end);
1513 gint32 frames_read = end - start;
1514 g_atomic_int_add(&_frames_read_from_ringbuffer, frames_read);