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.
18 $Id: diskstream.cc 567 2006-06-07 14:54:12Z trutkin $
34 #include <pbd/error.h>
35 #include <pbd/basename.h>
36 #include <glibmm/thread.h>
37 #include <pbd/xml++.h>
39 #include <ardour/ardour.h>
40 #include <ardour/audioengine.h>
41 #include <ardour/audio_diskstream.h>
42 #include <ardour/utils.h>
43 #include <ardour/configuration.h>
44 #include <ardour/audiofilesource.h>
45 #include <ardour/destructive_filesource.h>
46 #include <ardour/send.h>
47 #include <ardour/audioplaylist.h>
48 #include <ardour/cycle_timer.h>
49 #include <ardour/audioregion.h>
55 using namespace ARDOUR;
58 jack_nframes_t AudioDiskstream::disk_io_chunk_frames;
60 sigc::signal<void,AudioDiskstream*> AudioDiskstream::AudioDiskstreamCreated;
61 sigc::signal<void,list<AudioFileSource*>*> AudioDiskstream::DeleteSources;
62 sigc::signal<void> AudioDiskstream::DiskOverrun;
63 sigc::signal<void> AudioDiskstream::DiskUnderrun;
65 AudioDiskstream::AudioDiskstream (Session &sess, const string &name, Flag flag)
69 /* prevent any write sources from being created */
78 AudioDiskstreamCreated (this); /* EMIT SIGNAL */
81 AudioDiskstream::AudioDiskstream (Session& sess, const XMLNode& node)
88 if (set_state (node)) {
90 throw failed_constructor();
96 use_destructive_playlist ();
99 AudioDiskstreamCreated (this); /* EMIT SIGNAL */
103 AudioDiskstream::init_channel (ChannelInfo &chan)
105 chan.playback_wrap_buffer = 0;
106 chan.capture_wrap_buffer = 0;
107 chan.speed_buffer = 0;
108 chan.peak_power = 0.0f;
109 chan.write_source = 0;
111 chan.current_capture_buffer = 0;
112 chan.current_playback_buffer = 0;
113 chan.curr_capture_cnt = 0;
115 chan.playback_buf = new RingBufferNPT<Sample> (_session.diskstream_buffer_size());
116 chan.capture_buf = new RingBufferNPT<Sample> (_session.diskstream_buffer_size());
117 chan.capture_transition_buf = new RingBufferNPT<CaptureTransition> (128);
120 /* touch the ringbuffer buffers, which will cause
121 them to be mapped into locked physical RAM if
122 we're running with mlockall(). this doesn't do
125 memset (chan.playback_buf->buffer(), 0, sizeof (Sample) * chan.playback_buf->bufsize());
126 memset (chan.capture_buf->buffer(), 0, sizeof (Sample) * chan.capture_buf->bufsize());
127 memset (chan.capture_transition_buf->buffer(), 0, sizeof (CaptureTransition) * chan.capture_transition_buf->bufsize());
132 AudioDiskstream::init (Flag f)
137 _alignment_style = ExistingMaterial;
138 _persistent_alignment_style = ExistingMaterial;
139 first_input_change = true;
141 i_am_the_modifier = 0;
142 g_atomic_int_set (&_record_enabled, 0);
143 was_recording = false;
144 capture_start_frame = 0;
145 capture_captured = 0;
146 _visible_speed = 1.0f;
147 _actual_speed = 1.0f;
148 _buffer_reallocation_required = false;
149 _seek_required = false;
150 first_recordable_frame = max_frames;
151 last_recordable_frame = max_frames;
156 adjust_capture_position = 0;
157 last_possibly_recording = 0;
159 wrap_buffer_size = 0;
160 speed_buffer_size = 0;
162 phi = (uint64_t) (0x1000000);
165 playback_distance = 0;
166 _read_data_count = 0;
167 _write_data_count = 0;
168 deprecated_io_node = 0;
170 /* there are no channels at this point, so these
171 two calls just get speed_buffer_size and wrap_buffer
172 size setup without duplicating their code.
175 set_block_size (_session.get_block_size());
176 allocate_temporary_buffers ();
178 pending_overwrite = false;
180 overwrite_queued = false;
181 input_change_pending = NoChange;
188 AudioDiskstream::destroy_channel (ChannelInfo &chan)
190 if (chan.write_source) {
191 chan.write_source->release ();
192 chan.write_source = 0;
195 if (chan.speed_buffer) {
196 delete [] chan.speed_buffer;
199 if (chan.playback_wrap_buffer) {
200 delete [] chan.playback_wrap_buffer;
202 if (chan.capture_wrap_buffer) {
203 delete [] chan.capture_wrap_buffer;
206 delete chan.playback_buf;
207 delete chan.capture_buf;
208 delete chan.capture_transition_buf;
210 chan.playback_buf = 0;
211 chan.capture_buf = 0;
214 AudioDiskstream::~AudioDiskstream ()
216 Glib::Mutex::Lock lm (state_lock);
222 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
223 destroy_channel((*chan));
230 AudioDiskstream::handle_input_change (IOChange change, void *src)
232 Glib::Mutex::Lock lm (state_lock);
234 if (!(input_change_pending & change)) {
235 input_change_pending = IOChange (input_change_pending|change);
236 _session.request_input_change_handling ();
241 AudioDiskstream::non_realtime_input_change ()
244 Glib::Mutex::Lock lm (state_lock);
246 if (input_change_pending == NoChange) {
250 if (input_change_pending & ConfigurationChanged) {
252 if (_io->n_inputs() > _n_channels) {
254 // we need to add new channel infos
256 int diff = _io->n_inputs() - channels.size();
258 for (int i = 0; i < diff; ++i) {
262 } else if (_io->n_inputs() < _n_channels) {
264 // we need to get rid of channels
266 int diff = channels.size() - _io->n_inputs();
268 for (int i = 0; i < diff; ++i) {
274 get_input_sources ();
275 set_capture_offset ();
277 if (first_input_change) {
278 set_align_style (_persistent_alignment_style);
279 first_input_change = false;
281 set_align_style_from_io ();
284 input_change_pending = NoChange;
287 /* reset capture files */
289 reset_write_sources (false);
291 /* now refill channel buffers */
293 if (speed() != 1.0f || speed() != -1.0f) {
294 seek ((jack_nframes_t) (_session.transport_frame() * (double) speed()));
297 seek (_session.transport_frame());
302 AudioDiskstream::get_input_sources ()
304 uint32_t ni = _io->n_inputs();
306 for (uint32_t n = 0; n < ni; ++n) {
308 const char **connections = _io->input(n)->get_connections ();
309 ChannelInfo& chan = channels[n];
311 if (connections == 0 || connections[0] == 0) {
314 // _source->disable_metering ();
320 chan.source = _session.engine().get_port_by_name (connections[0]);
330 AudioDiskstream::find_and_use_playlist (const string& name)
333 AudioPlaylist* playlist;
335 if ((pl = _session.get_playlist (name)) == 0) {
336 error << string_compose(_("AudioDiskstream: Session doesn't know about a Playlist called \"%1\""), name) << endmsg;
340 if ((playlist = dynamic_cast<AudioPlaylist*> (pl)) == 0) {
341 error << string_compose(_("AudioDiskstream: Playlist \"%1\" isn't an audio playlist"), name) << endmsg;
345 return use_playlist (playlist);
349 AudioDiskstream::use_playlist (AudioPlaylist* playlist)
352 Glib::Mutex::Lock lm (state_lock);
354 if (playlist == _playlist) {
358 plstate_connection.disconnect();
359 plmod_connection.disconnect ();
360 plgone_connection.disconnect ();
366 _playlist = playlist;
369 if (!in_set_state && recordable()) {
370 reset_write_sources (false);
373 plstate_connection = _playlist->StateChanged.connect (mem_fun (*this, &AudioDiskstream::playlist_changed));
374 plmod_connection = _playlist->Modified.connect (mem_fun (*this, &AudioDiskstream::playlist_modified));
375 plgone_connection = _playlist->GoingAway.connect (mem_fun (*this, &AudioDiskstream::playlist_deleted));
378 if (!overwrite_queued) {
379 _session.request_overwrite_buffer (this);
380 overwrite_queued = true;
383 PlaylistChanged (); /* EMIT SIGNAL */
384 _session.set_dirty ();
390 AudioDiskstream::playlist_deleted (Playlist* pl)
392 /* this catches an ordering issue with session destruction. playlists
393 are destroyed before diskstreams. we have to invalidate any handles
394 we have to the playlist.
401 AudioDiskstream::use_new_playlist ()
404 AudioPlaylist* playlist;
406 if (!in_set_state && destructive()) {
411 newname = Playlist::bump_name (_playlist->name(), _session);
413 newname = Playlist::bump_name (_name, _session);
416 if ((playlist = new AudioPlaylist (_session, newname, hidden())) != 0) {
417 playlist->set_orig_diskstream_id (id());
418 return use_playlist (playlist);
425 AudioDiskstream::use_copy_playlist ()
431 if (_playlist == 0) {
432 error << string_compose(_("AudioDiskstream %1: there is no existing playlist to make a copy of!"), _name) << endmsg;
437 AudioPlaylist* playlist;
439 newname = Playlist::bump_name (_playlist->name(), _session);
441 if ((playlist = new AudioPlaylist (*_playlist, newname)) != 0) {
442 playlist->set_orig_diskstream_id (id());
443 return use_playlist (playlist);
450 AudioDiskstream::setup_destructive_playlist ()
452 AudioRegion::SourceList srcs;
454 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
455 srcs.push_back ((*chan).write_source);
458 /* a single full-sized region */
460 AudioRegion* region = new AudioRegion (srcs, 0, max_frames, _name);
461 _playlist->add_region (*region, 0);
465 AudioDiskstream::use_destructive_playlist ()
467 /* use the sources associated with the single full-extent region */
469 Playlist::RegionList* rl = _playlist->regions_at (0);
472 reset_write_sources (false, true);
476 AudioRegion* region = dynamic_cast<AudioRegion*> (rl->front());
479 throw failed_constructor();
485 ChannelList::iterator chan;
487 for (n = 0, chan = channels.begin(); chan != channels.end(); ++chan, ++n) {
488 (*chan).write_source = dynamic_cast<AudioFileSource*>(®ion->source (n));
489 (*chan).write_source->set_allow_remove_if_empty (false);
492 /* the source list will never be reset for a destructive track */
496 AudioDiskstream::set_io (IO& io)
499 set_align_style_from_io ();
503 AudioDiskstream::set_name (string str, void *src)
506 _playlist->set_name (str);
509 if (!in_set_state && recordable()) {
510 /* rename existing capture files so that they have the correct name */
511 return rename_write_sources ();
521 AudioDiskstream::set_speed (double sp)
523 _session.request_diskstream_speed (*this, sp);
525 /* to force a rebuffering at the right place */
530 AudioDiskstream::realtime_set_speed (double sp, bool global)
532 bool changed = false;
533 double new_speed = sp * _session.transport_speed();
535 if (_visible_speed != sp) {
540 if (new_speed != _actual_speed) {
542 jack_nframes_t required_wrap_size = (jack_nframes_t) floor (_session.get_block_size() *
543 fabs (new_speed)) + 1;
545 if (required_wrap_size > wrap_buffer_size) {
546 _buffer_reallocation_required = true;
549 _actual_speed = new_speed;
550 phi = (uint64_t) (0x1000000 * fabs(_actual_speed));
555 _seek_required = true;
557 speed_changed (); /* EMIT SIGNAL */
560 return _buffer_reallocation_required || _seek_required;
564 AudioDiskstream::non_realtime_set_speed ()
566 if (_buffer_reallocation_required)
568 Glib::Mutex::Lock lm (state_lock);
569 allocate_temporary_buffers ();
571 _buffer_reallocation_required = false;
574 if (_seek_required) {
575 if (speed() != 1.0f || speed() != -1.0f) {
576 seek ((jack_nframes_t) (_session.transport_frame() * (double) speed()), true);
579 seek (_session.transport_frame(), true);
582 _seek_required = false;
587 AudioDiskstream::prepare ()
590 playback_distance = 0;
594 AudioDiskstream::check_record_status (jack_nframes_t transport_frame, jack_nframes_t nframes, bool can_record)
596 int possibly_recording;
599 const int transport_rolling = 0x4;
600 const int track_rec_enabled = 0x2;
601 const int global_rec_enabled = 0x1;
603 /* merge together the 3 factors that affect record status, and compute
607 rolling = _session.transport_speed() != 0.0f;
608 possibly_recording = (rolling << 2) | (record_enabled() << 1) | can_record;
609 change = possibly_recording ^ last_possibly_recording;
611 if (possibly_recording == last_possibly_recording) {
617 /* if per-track or global rec-enable turned on while the other was already on, we've started recording */
619 if ((change & track_rec_enabled) && record_enabled() && (!(change & global_rec_enabled) && can_record) ||
620 ((change & global_rec_enabled) && can_record && (!(change & track_rec_enabled) && record_enabled()))) {
622 /* starting to record: compute first+last frames */
624 first_recordable_frame = transport_frame + _capture_offset;
625 last_recordable_frame = max_frames;
626 capture_start_frame = transport_frame;
628 if (!(last_possibly_recording & transport_rolling) && (possibly_recording & transport_rolling)) {
630 /* was stopped, now rolling (and recording) */
632 if (_alignment_style == ExistingMaterial) {
633 first_recordable_frame += _session.worst_output_latency();
635 first_recordable_frame += _roll_delay;
640 /* was rolling, but record state changed */
642 if (_alignment_style == ExistingMaterial) {
645 if (!_session.get_punch_in()) {
647 /* manual punch in happens at the correct transport frame
648 because the user hit a button. but to get alignment correct
649 we have to back up the position of the new region to the
650 appropriate spot given the roll delay.
653 capture_start_frame -= _roll_delay;
655 /* XXX paul notes (august 2005): i don't know why
659 first_recordable_frame += _capture_offset;
663 /* autopunch toggles recording at the precise
664 transport frame, and then the DS waits
665 to start recording for a time that depends
666 on the output latency.
669 first_recordable_frame += _session.worst_output_latency();
674 if (_session.get_punch_in()) {
675 first_recordable_frame += _roll_delay;
677 capture_start_frame -= _roll_delay;
683 if (_flags & Recordable) {
684 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
686 RingBufferNPT<CaptureTransition>::rw_vector transvec;
687 (*chan).capture_transition_buf->get_write_vector(&transvec);
689 if (transvec.len[0] > 0) {
690 transvec.buf[0]->type = CaptureStart;
691 transvec.buf[0]->capture_val = capture_start_frame;
692 (*chan).capture_transition_buf->increment_write_ptr(1);
696 fatal << X_("programming error: capture_transition_buf is full on rec start! inconceivable!")
702 } else if (!record_enabled() || !can_record) {
706 last_recordable_frame = transport_frame + _capture_offset;
708 if (_alignment_style == ExistingMaterial) {
709 last_recordable_frame += _session.worst_output_latency();
711 last_recordable_frame += _roll_delay;
715 last_possibly_recording = possibly_recording;
719 AudioDiskstream::process (jack_nframes_t transport_frame, jack_nframes_t nframes, jack_nframes_t offset, bool can_record, bool rec_monitors_input)
722 ChannelList::iterator c;
724 jack_nframes_t rec_offset = 0;
725 jack_nframes_t rec_nframes = 0;
726 bool nominally_recording;
727 bool re = record_enabled ();
728 bool collect_playback = false;
730 /* if we've already processed the frames corresponding to this call,
731 just return. this allows multiple routes that are taking input
732 from this diskstream to call our ::process() method, but have
733 this stuff only happen once. more commonly, it allows both
734 the AudioTrack that is using this AudioDiskstream *and* the Session
735 to call process() without problems.
742 check_record_status (transport_frame, nframes, can_record);
744 nominally_recording = (can_record && re);
751 /* This lock is held until the end of AudioDiskstream::commit, so these two functions
752 must always be called as a pair. The only exception is if this function
753 returns a non-zero value, in which case, ::commit should not be called.
756 // If we can't take the state lock return.
757 if (!state_lock.trylock()) {
761 adjust_capture_position = 0;
763 for (c = channels.begin(); c != channels.end(); ++c) {
764 (*c).current_capture_buffer = 0;
765 (*c).current_playback_buffer = 0;
768 if (nominally_recording || (_session.get_record_enabled() && _session.get_punch_in())) {
771 ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
778 case OverlapInternal:
779 /* ---------- recrange
782 rec_nframes = nframes;
787 /* |--------| recrange
790 rec_nframes = transport_frame + nframes - first_recordable_frame;
792 rec_offset = first_recordable_frame - transport_frame;
797 /* |--------| recrange
800 rec_nframes = last_recordable_frame - transport_frame;
804 case OverlapExternal:
805 /* |--------| recrange
806 -------------- transrange
808 rec_nframes = last_recordable_frame - last_recordable_frame;
809 rec_offset = first_recordable_frame - transport_frame;
813 if (rec_nframes && !was_recording) {
814 capture_captured = 0;
815 was_recording = true;
820 if (can_record && !_last_capture_regions.empty()) {
821 _last_capture_regions.clear ();
824 if (nominally_recording || rec_nframes) {
826 for (n = 0, c = channels.begin(); c != channels.end(); ++c, ++n) {
828 ChannelInfo& chan (*c);
830 chan.capture_buf->get_write_vector (&chan.capture_vector);
832 if (rec_nframes <= chan.capture_vector.len[0]) {
834 chan.current_capture_buffer = chan.capture_vector.buf[0];
836 /* note: grab the entire port buffer, but only copy what we were supposed to for recording, and use
840 memcpy (chan.current_capture_buffer, _io->input(n)->get_buffer (rec_nframes) + offset + rec_offset, sizeof (Sample) * rec_nframes);
844 jack_nframes_t total = chan.capture_vector.len[0] + chan.capture_vector.len[1];
846 if (rec_nframes > total) {
851 Sample* buf = _io->input (n)->get_buffer (nframes) + offset;
852 jack_nframes_t first = chan.capture_vector.len[0];
854 memcpy (chan.capture_wrap_buffer, buf, sizeof (Sample) * first);
855 memcpy (chan.capture_vector.buf[0], buf, sizeof (Sample) * first);
856 memcpy (chan.capture_wrap_buffer+first, buf + first, sizeof (Sample) * (rec_nframes - first));
857 memcpy (chan.capture_vector.buf[1], buf + first, sizeof (Sample) * (rec_nframes - first));
859 chan.current_capture_buffer = chan.capture_wrap_buffer;
866 finish_capture (rec_monitors_input);
873 /* data will be written to disk */
875 if (rec_nframes == nframes && rec_offset == 0) {
877 for (c = channels.begin(); c != channels.end(); ++c) {
878 (*c).current_playback_buffer = (*c).current_capture_buffer;
881 playback_distance = nframes;
886 /* we can't use the capture buffer as the playback buffer, because
887 we recorded only a part of the current process' cycle data
891 collect_playback = true;
894 adjust_capture_position = rec_nframes;
896 } else if (nominally_recording) {
898 /* can't do actual capture yet - waiting for latency effects to finish before we start*/
900 for (c = channels.begin(); c != channels.end(); ++c) {
901 (*c).current_playback_buffer = (*c).current_capture_buffer;
904 playback_distance = nframes;
908 collect_playback = true;
911 if (collect_playback) {
913 /* we're doing playback */
915 jack_nframes_t necessary_samples;
917 /* no varispeed playback if we're recording, because the output .... TBD */
919 if (rec_nframes == 0 && _actual_speed != 1.0f) {
920 necessary_samples = (jack_nframes_t) floor ((nframes * fabs (_actual_speed))) + 1;
922 necessary_samples = nframes;
925 for (c = channels.begin(); c != channels.end(); ++c) {
926 (*c).playback_buf->get_read_vector (&(*c).playback_vector);
931 for (c = channels.begin(); c != channels.end(); ++c, ++n) {
933 ChannelInfo& chan (*c);
935 if (necessary_samples <= chan.playback_vector.len[0]) {
937 chan.current_playback_buffer = chan.playback_vector.buf[0];
940 jack_nframes_t total = chan.playback_vector.len[0] + chan.playback_vector.len[1];
942 if (necessary_samples > total) {
948 memcpy ((char *) chan.playback_wrap_buffer, chan.playback_vector.buf[0],
949 chan.playback_vector.len[0] * sizeof (Sample));
950 memcpy (chan.playback_wrap_buffer + chan.playback_vector.len[0], chan.playback_vector.buf[1],
951 (necessary_samples - chan.playback_vector.len[0]) * sizeof (Sample));
953 chan.current_playback_buffer = chan.playback_wrap_buffer;
958 if (rec_nframes == 0 && _actual_speed != 1.0f && _actual_speed != -1.0f) {
960 uint64_t phase = last_phase;
961 jack_nframes_t i = 0;
963 // Linearly interpolate into the alt buffer
964 // using 40.24 fixp maths (swh)
966 for (c = channels.begin(); c != channels.end(); ++c) {
969 ChannelInfo& chan (*c);
974 for (jack_nframes_t outsample = 0; outsample < nframes; ++outsample) {
976 fr = (phase & 0xFFFFFF) / 16777216.0f;
977 chan.speed_buffer[outsample] =
978 chan.current_playback_buffer[i] * (1.0f - fr) +
979 chan.current_playback_buffer[i+1] * fr;
983 chan.current_playback_buffer = chan.speed_buffer;
986 playback_distance = i + 1;
987 last_phase = (phase & 0xFFFFFF);
990 playback_distance = nframes;
1002 /* we're exiting with failure, so ::commit will not
1003 be called. unlock the state lock.
1006 state_lock.unlock();
1013 AudioDiskstream::recover ()
1015 state_lock.unlock();
1020 AudioDiskstream::commit (jack_nframes_t nframes)
1022 bool need_butler = false;
1024 if (_actual_speed < 0.0) {
1025 playback_sample -= playback_distance;
1027 playback_sample += playback_distance;
1030 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
1032 (*chan).playback_buf->increment_read_ptr (playback_distance);
1034 if (adjust_capture_position) {
1035 (*chan).capture_buf->increment_write_ptr (adjust_capture_position);
1039 if (adjust_capture_position != 0) {
1040 capture_captured += adjust_capture_position;
1041 adjust_capture_position = 0;
1045 need_butler = channels[0].playback_buf->write_space() >= channels[0].playback_buf->bufsize() / 2;
1047 need_butler = channels[0].playback_buf->write_space() >= disk_io_chunk_frames
1048 || channels[0].capture_buf->read_space() >= disk_io_chunk_frames;
1051 state_lock.unlock();
1059 AudioDiskstream::set_pending_overwrite (bool yn)
1061 /* called from audio thread, so we can use the read ptr and playback sample as we wish */
1063 pending_overwrite = yn;
1065 overwrite_frame = playback_sample;
1066 overwrite_offset = channels.front().playback_buf->get_read_ptr();
1070 AudioDiskstream::overwrite_existing_buffers ()
1072 Sample* mixdown_buffer;
1076 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
1078 overwrite_queued = false;
1080 /* assume all are the same size */
1081 jack_nframes_t size = channels[0].playback_buf->bufsize();
1083 mixdown_buffer = new Sample[size];
1084 gain_buffer = new float[size];
1085 workbuf = new char[size*4];
1087 /* reduce size so that we can fill the buffer correctly. */
1091 jack_nframes_t start;
1093 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan, ++n) {
1095 start = overwrite_frame;
1096 jack_nframes_t cnt = size;
1098 /* to fill the buffer without resetting the playback sample, we need to
1099 do it one or two chunks (normally two).
1101 |----------------------------------------------------------------------|
1105 |<- second chunk->||<----------------- first chunk ------------------>|
1109 jack_nframes_t to_read = size - overwrite_offset;
1111 if (read ((*chan).playback_buf->buffer() + overwrite_offset, mixdown_buffer, gain_buffer, workbuf,
1112 start, to_read, *chan, n, reversed)) {
1113 error << string_compose(_("AudioDiskstream %1: when refilling, cannot read %2 from playlist at frame %3"),
1114 _id, size, playback_sample) << endmsg;
1118 if (cnt > to_read) {
1122 if (read ((*chan).playback_buf->buffer(), mixdown_buffer, gain_buffer, workbuf,
1123 start, cnt, *chan, n, reversed)) {
1124 error << string_compose(_("AudioDiskstream %1: when refilling, cannot read %2 from playlist at frame %3"),
1125 _id, size, playback_sample) << endmsg;
1134 pending_overwrite = false;
1135 delete [] gain_buffer;
1136 delete [] mixdown_buffer;
1142 AudioDiskstream::seek (jack_nframes_t frame, bool complete_refill)
1144 Glib::Mutex::Lock lm (state_lock);
1147 ChannelList::iterator chan;
1149 for (n = 0, chan = channels.begin(); chan != channels.end(); ++chan, ++n) {
1150 (*chan).playback_buf->reset ();
1151 (*chan).capture_buf->reset ();
1154 playback_sample = frame;
1157 if (complete_refill) {
1158 while ((ret = do_refill (0, 0, 0)) > 0);
1160 ret = do_refill (0, 0, 0);
1167 AudioDiskstream::can_internal_playback_seek (jack_nframes_t distance)
1169 ChannelList::iterator chan;
1171 for (chan = channels.begin(); chan != channels.end(); ++chan) {
1172 if ((*chan).playback_buf->read_space() < distance) {
1180 AudioDiskstream::internal_playback_seek (jack_nframes_t distance)
1182 ChannelList::iterator chan;
1184 for (chan = channels.begin(); chan != channels.end(); ++chan) {
1185 (*chan).playback_buf->increment_read_ptr (distance);
1188 first_recordable_frame += distance;
1189 playback_sample += distance;
1195 AudioDiskstream::read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer, char * workbuf, jack_nframes_t& start, jack_nframes_t cnt,
1196 ChannelInfo& channel_info, int channel, bool reversed)
1198 jack_nframes_t this_read = 0;
1199 bool reloop = false;
1200 jack_nframes_t loop_end = 0;
1201 jack_nframes_t loop_start = 0;
1202 jack_nframes_t loop_length = 0;
1203 jack_nframes_t offset = 0;
1207 /* Make the use of a Location atomic for this read operation.
1209 Note: Locations don't get deleted, so all we care about
1210 when I say "atomic" is that we are always pointing to
1211 the same one and using a start/length values obtained
1215 if ((loc = loop_location) != 0) {
1216 loop_start = loc->start();
1217 loop_end = loc->end();
1218 loop_length = loop_end - loop_start;
1221 /* if we are looping, ensure that the first frame we read is at the correct
1222 position within the loop.
1225 if (loc && start >= loop_end) {
1226 //cerr << "start adjusted from " << start;
1227 start = loop_start + ((start - loop_start) % loop_length);
1228 //cerr << "to " << start << endl;
1230 //cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl;
1235 /* take any loop into account. we can't read past the end of the loop. */
1237 if (loc && (loop_end - start < cnt)) {
1238 this_read = loop_end - start;
1239 //cerr << "reloop true: thisread: " << this_read << " cnt: " << cnt << endl;
1246 if (this_read == 0) {
1250 this_read = min(cnt,this_read);
1252 if (_playlist->read (buf+offset, mixdown_buffer, gain_buffer, workbuf, start, this_read, channel) != this_read) {
1253 error << string_compose(_("AudioDiskstream %1: cannot read %2 from playlist at frame %3"), _id, this_read,
1258 _read_data_count = _playlist->read_data_count();
1262 /* don't adjust start, since caller has already done that
1265 swap_by_ptr (buf, buf + this_read - 1);
1269 /* if we read to the end of the loop, go back to the beginning */
1279 offset += this_read;
1286 AudioDiskstream::do_refill (Sample* mixdown_buffer, float* gain_buffer, char * workbuf)
1289 jack_nframes_t to_read;
1290 RingBufferNPT<Sample>::rw_vector vector;
1294 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
1295 jack_nframes_t total_space;
1296 jack_nframes_t zero_fill;
1298 ChannelList::iterator i;
1301 channels.front().playback_buf->get_write_vector (&vector);
1303 if ((total_space = vector.len[0] + vector.len[1]) == 0) {
1307 /* if there are 2+ chunks of disk i/o possible for
1308 this track, let the caller know so that it can arrange
1309 for us to be called again, ASAP.
1312 if (total_space >= (_slaved?3:2) * disk_io_chunk_frames) {
1316 /* if we're running close to normal speed and there isn't enough
1317 space to do disk_io_chunk_frames of I/O, then don't bother.
1319 at higher speeds, just do it because the sync between butler
1320 and audio thread may not be good enough.
1323 if ((total_space < disk_io_chunk_frames) && fabs (_actual_speed) < 2.0f) {
1327 /* when slaved, don't try to get too close to the read pointer. this
1328 leaves space for the buffer reversal to have something useful to
1332 if (_slaved && total_space < (channels.front().playback_buf->bufsize() / 2)) {
1336 total_space = min (disk_io_chunk_frames, total_space);
1340 if (file_frame == 0) {
1342 /* at start: nothing to do but fill with silence */
1344 for (chan_n = 0, i = channels.begin(); i != channels.end(); ++i, ++chan_n) {
1346 ChannelInfo& chan (*i);
1347 chan.playback_buf->get_write_vector (&vector);
1348 memset (vector.buf[0], 0, sizeof(Sample) * vector.len[0]);
1349 if (vector.len[1]) {
1350 memset (vector.buf[1], 0, sizeof(Sample) * vector.len[1]);
1352 chan.playback_buf->increment_write_ptr (vector.len[0] + vector.len[1]);
1357 if (file_frame < total_space) {
1359 /* too close to the start: read what we can,
1360 and then zero fill the rest
1363 zero_fill = total_space - file_frame;
1364 total_space = file_frame;
1369 /* move read position backwards because we are going
1370 to reverse the data.
1373 file_frame -= total_space;
1379 if (file_frame == max_frames) {
1381 /* at end: nothing to do but fill with silence */
1383 for (chan_n = 0, i = channels.begin(); i != channels.end(); ++i, ++chan_n) {
1385 ChannelInfo& chan (*i);
1386 chan.playback_buf->get_write_vector (&vector);
1387 memset (vector.buf[0], 0, sizeof(Sample) * vector.len[0]);
1388 if (vector.len[1]) {
1389 memset (vector.buf[1], 0, sizeof(Sample) * vector.len[1]);
1391 chan.playback_buf->increment_write_ptr (vector.len[0] + vector.len[1]);
1396 if (file_frame > max_frames - total_space) {
1398 /* to close to the end: read what we can, and zero fill the rest */
1400 zero_fill = total_space - (max_frames - file_frame);
1401 total_space = max_frames - file_frame;
1408 /* Please note: the code to allocate buffers isn't run
1409 during normal butler thread operation. Its there
1410 for other times when we need to call do_refill()
1411 from somewhere other than the butler thread.
1414 if (mixdown_buffer == 0) {
1415 mixdown_buffer = new Sample[disk_io_chunk_frames];
1416 free_mixdown = true;
1418 free_mixdown = false;
1421 if (gain_buffer == 0) {
1422 gain_buffer = new float[disk_io_chunk_frames];
1429 workbuf = new char[disk_io_chunk_frames * 4];
1430 free_workbuf = true;
1432 free_workbuf = false;
1435 jack_nframes_t file_frame_tmp = 0;
1437 for (chan_n = 0, i = channels.begin(); i != channels.end(); ++i, ++chan_n) {
1439 ChannelInfo& chan (*i);
1442 jack_nframes_t len1, len2;
1444 chan.playback_buf->get_write_vector (&vector);
1447 file_frame_tmp = file_frame;
1450 buf1 = vector.buf[1];
1451 len1 = vector.len[1];
1452 buf2 = vector.buf[0];
1453 len2 = vector.len[0];
1455 buf1 = vector.buf[0];
1456 len1 = vector.len[0];
1457 buf2 = vector.buf[1];
1458 len2 = vector.len[1];
1462 to_read = min (ts, len1);
1463 to_read = min (to_read, disk_io_chunk_frames);
1467 if (read (buf1, mixdown_buffer, gain_buffer, workbuf, file_frame_tmp, to_read, chan, chan_n, reversed)) {
1472 chan.playback_buf->increment_write_ptr (to_read);
1476 to_read = min (ts, len2);
1481 /* we read all of vector.len[0], but it wasn't an entire disk_io_chunk_frames of data,
1482 so read some or all of vector.len[1] as well.
1485 if (read (buf2, mixdown_buffer, gain_buffer, workbuf, file_frame_tmp, to_read, chan, chan_n, reversed)) {
1490 chan.playback_buf->increment_write_ptr (to_read);
1499 file_frame = file_frame_tmp;
1503 delete [] mixdown_buffer;
1506 delete [] gain_buffer;
1516 AudioDiskstream::do_flush (char * workbuf, bool force_flush)
1520 RingBufferNPT<Sample>::rw_vector vector;
1521 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1522 jack_nframes_t total;
1524 /* important note: this function will write *AT MOST*
1525 disk_io_chunk_frames of data to disk. it will never
1526 write more than that. if its writes that much and there
1527 is more than that waiting to be written, it will return 1,
1528 otherwise 0 on success or -1 on failure.
1530 if there is less than disk_io_chunk_frames to be written,
1531 no data will be written at all unless `force_flush' is true.
1534 _write_data_count = 0;
1536 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
1538 (*chan).capture_buf->get_read_vector (&vector);
1540 total = vector.len[0] + vector.len[1];
1543 if (total == 0 || (total < disk_io_chunk_frames && !force_flush && was_recording)) {
1548 /* if there are 2+ chunks of disk i/o possible for
1549 this track, let the caller know so that it can arrange
1550 for us to be called again, ASAP.
1552 if we are forcing a flush, then if there is* any* extra
1553 work, let the caller know.
1555 if we are no longer recording and there is any extra work,
1556 let the caller know too.
1559 if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) {
1563 to_write = min (disk_io_chunk_frames, (jack_nframes_t) vector.len[0]);
1566 // check the transition buffer when recording destructive
1567 // important that we get this after the capture buf
1569 if (destructive()) {
1570 (*chan).capture_transition_buf->get_read_vector(&transvec);
1571 size_t transcount = transvec.len[0] + transvec.len[1];
1572 bool have_start = false;
1575 for (ti=0; ti < transcount; ++ti) {
1576 CaptureTransition & captrans = (ti < transvec.len[0]) ? transvec.buf[0][ti] : transvec.buf[1][ti-transvec.len[0]];
1578 if (captrans.type == CaptureStart) {
1579 // by definition, the first data we got above represents the given capture pos
1581 (*chan).write_source->mark_capture_start (captrans.capture_val);
1582 (*chan).curr_capture_cnt = 0;
1586 else if (captrans.type == CaptureEnd) {
1588 // capture end, the capture_val represents total frames in capture
1590 if (captrans.capture_val <= (*chan).curr_capture_cnt + to_write) {
1592 // shorten to make the write a perfect fit
1593 uint32_t nto_write = (captrans.capture_val - (*chan).curr_capture_cnt);
1595 if (nto_write < to_write) {
1596 ret = 1; // should we?
1598 to_write = nto_write;
1600 (*chan).write_source->mark_capture_end ();
1602 // increment past this transition, but go no further
1607 // actually ends just beyond this chunk, so force more work
1615 (*chan).capture_transition_buf->increment_read_ptr(ti);
1619 if ((!(*chan).write_source) || (*chan).write_source->write (vector.buf[0], to_write, workbuf) != to_write) {
1620 error << string_compose(_("AudioDiskstream %1: cannot write to disk"), _id) << endmsg;
1624 (*chan).capture_buf->increment_read_ptr (to_write);
1625 (*chan).curr_capture_cnt += to_write;
1627 if ((to_write == vector.len[0]) && (total > to_write) && (to_write < disk_io_chunk_frames) && !destructive()) {
1629 /* we wrote all of vector.len[0] but it wasn't an entire
1630 disk_io_chunk_frames of data, so arrange for some part
1631 of vector.len[1] to be flushed to disk as well.
1634 to_write = min ((jack_nframes_t)(disk_io_chunk_frames - to_write), (jack_nframes_t) vector.len[1]);
1636 if ((*chan).write_source->write (vector.buf[1], to_write, workbuf) != to_write) {
1637 error << string_compose(_("AudioDiskstream %1: cannot write to disk"), _id) << endmsg;
1641 _write_data_count += (*chan).write_source->write_data_count();
1643 (*chan).capture_buf->increment_read_ptr (to_write);
1644 (*chan).curr_capture_cnt += to_write;
1653 AudioDiskstream::playlist_changed (Change ignored)
1655 playlist_modified ();
1659 AudioDiskstream::playlist_modified ()
1661 if (!i_am_the_modifier && !overwrite_queued) {
1662 _session.request_overwrite_buffer (this);
1663 overwrite_queued = true;
1668 AudioDiskstream::transport_stopped (struct tm& when, time_t twhen, bool abort_capture)
1670 uint32_t buffer_position;
1671 bool more_work = true;
1673 AudioRegion* region = 0;
1674 jack_nframes_t total_capture;
1675 AudioRegion::SourceList srcs;
1676 AudioRegion::SourceList::iterator src;
1677 ChannelList::iterator chan;
1678 vector<CaptureInfo*>::iterator ci;
1680 list<AudioFileSource*>* deletion_list;
1681 bool mark_write_completed = false;
1683 finish_capture (true);
1685 /* butler is already stopped, but there may be work to do
1686 to flush remaining data to disk.
1689 while (more_work && !err) {
1690 switch (do_flush ( _session.conversion_buffer(Session::TransportContext), true)) {
1697 error << string_compose(_("AudioDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
1702 /* XXX is there anything we can do if err != 0 ? */
1703 Glib::Mutex::Lock lm (capture_info_lock);
1705 if (capture_info.empty()) {
1709 if (abort_capture) {
1711 ChannelList::iterator chan;
1713 deletion_list = new list<AudioFileSource*>;
1715 for ( chan = channels.begin(); chan != channels.end(); ++chan) {
1717 if ((*chan).write_source) {
1719 (*chan).write_source->mark_for_remove ();
1720 (*chan).write_source->release ();
1722 deletion_list->push_back ((*chan).write_source);
1724 (*chan).write_source = 0;
1727 /* new source set up in "out" below */
1730 if (!deletion_list->empty()) {
1731 DeleteSources (deletion_list);
1733 delete deletion_list;
1739 for (total_capture = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1740 total_capture += (*ci)->frames;
1743 /* figure out the name for this take */
1745 for (n = 0, chan = channels.begin(); chan != channels.end(); ++chan, ++n) {
1747 AudioFileSource* s = (*chan).write_source;
1751 AudioFileSource* fsrc;
1755 if ((fsrc = dynamic_cast<AudioFileSource *>(s)) != 0) {
1756 cerr << "updating source after capture\n";
1757 fsrc->update_header (capture_info.front()->start, when, twhen);
1760 s->set_captured_for (_name);
1765 /* destructive tracks have a single, never changing region */
1767 if (destructive()) {
1769 /* send a signal that any UI can pick up to do the right thing. there is
1770 a small problem here in that a UI may need the peak data to be ready
1771 for the data that was recorded and this isn't interlocked with that
1772 process. this problem is deferred to the UI.
1775 _playlist->Modified();
1779 /* Register a new region with the Session that
1780 describes the entire source. Do this first
1781 so that any sub-regions will obviously be
1782 children of this one (later!)
1786 region = new AudioRegion (srcs, channels[0].write_source->last_capture_start_frame(), total_capture,
1787 region_name_from_path (channels[0].write_source->name()),
1788 0, AudioRegion::Flag (AudioRegion::DefaultFlags|AudioRegion::Automatic|AudioRegion::WholeFile));
1790 region->special_set_position (capture_info.front()->start);
1794 catch (failed_constructor& err) {
1795 error << string_compose(_("%1: could not create region for complete audio file"), _name) << endmsg;
1799 _last_capture_regions.push_back (region);
1801 // cerr << _name << ": there are " << capture_info.size() << " capture_info records\n";
1803 _session.add_undo (_playlist->get_memento());
1804 _playlist->freeze ();
1806 for (buffer_position = channels[0].write_source->last_capture_start_frame(), ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1809 _session.region_name (region_name, channels[0].write_source->name(), false);
1811 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
1814 region = new AudioRegion (srcs, buffer_position, (*ci)->frames, region_name);
1817 catch (failed_constructor& err) {
1818 error << _("AudioDiskstream: could not create region for captured audio!") << endmsg;
1819 continue; /* XXX is this OK? */
1822 _last_capture_regions.push_back (region);
1824 // cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
1826 i_am_the_modifier++;
1827 _playlist->add_region (*region, (*ci)->start);
1828 i_am_the_modifier--;
1830 buffer_position += (*ci)->frames;
1834 _session.add_redo_no_execute (_playlist->get_memento());
1837 mark_write_completed = true;
1839 reset_write_sources (mark_write_completed);
1842 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1846 capture_info.clear ();
1847 capture_start_frame = 0;
1851 AudioDiskstream::finish_capture (bool rec_monitors_input)
1853 was_recording = false;
1855 if (capture_captured == 0) {
1859 if (recordable() && destructive()) {
1860 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
1862 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1863 (*chan).capture_transition_buf->get_write_vector(&transvec);
1866 if (transvec.len[0] > 0) {
1867 transvec.buf[0]->type = CaptureEnd;
1868 transvec.buf[0]->capture_val = capture_captured;
1869 (*chan).capture_transition_buf->increment_write_ptr(1);
1873 fatal << string_compose (_("programmer error: %1"), X_("capture_transition_buf is full when stopping record! inconceivable!")) << endmsg;
1879 CaptureInfo* ci = new CaptureInfo;
1881 ci->start = capture_start_frame;
1882 ci->frames = capture_captured;
1884 /* XXX theoretical race condition here. Need atomic exchange ?
1885 However, the circumstances when this is called right
1886 now (either on record-disable or transport_stopped)
1887 mean that no actual race exists. I think ...
1888 We now have a capture_info_lock, but it is only to be used
1889 to synchronize in the transport_stop and the capture info
1890 accessors, so that invalidation will not occur (both non-realtime).
1893 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1895 capture_info.push_back (ci);
1896 capture_captured = 0;
1900 AudioDiskstream::set_record_enabled (bool yn, void* src)
1902 bool rolling = _session.transport_speed() != 0.0f;
1904 if (!recordable() || !_session.record_enabling_legal()) {
1908 /* if we're turning on rec-enable, there needs to be an
1912 if (yn && channels[0].source == 0) {
1914 /* pick up connections not initiated *from* the IO object
1915 we're associated with.
1918 get_input_sources ();
1921 /* yes, i know that this not proof against race conditions, but its
1922 good enough. i think.
1925 if (record_enabled() != yn) {
1927 g_atomic_int_set (&_record_enabled, 1);
1928 capturing_sources.clear ();
1929 if (Config->get_use_hardware_monitoring()) {
1930 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
1931 if ((*chan).source) {
1932 (*chan).source->request_monitor_input (!(_session.get_auto_input() && rolling));
1934 capturing_sources.push_back ((*chan).write_source);
1937 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
1938 capturing_sources.push_back ((*chan).write_source);
1943 g_atomic_int_set (&_record_enabled, 0);
1944 if (Config->get_use_hardware_monitoring()) {
1945 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
1946 if ((*chan).source) {
1947 (*chan).source->request_monitor_input (false);
1951 capturing_sources.clear ();
1954 record_enable_changed (src); /* EMIT SIGNAL */
1959 AudioDiskstream::get_state ()
1961 XMLNode* node = new XMLNode ("AudioDiskstream");
1963 LocaleGuard lg (X_("POSIX"));
1965 snprintf (buf, sizeof(buf), "0x%x", _flags);
1966 node->add_property ("flags", buf);
1968 snprintf (buf, sizeof(buf), "%zd", channels.size());
1969 node->add_property ("channels", buf);
1971 node->add_property ("playlist", _playlist->name());
1973 snprintf (buf, sizeof(buf), "%f", _visible_speed);
1974 node->add_property ("speed", buf);
1976 node->add_property("name", _name);
1978 node->add_property("id", buf);
1980 if (!capturing_sources.empty() && _session.get_record_enabled()) {
1982 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1983 XMLNode* cs_grandchild;
1985 for (vector<AudioFileSource*>::iterator i = capturing_sources.begin(); i != capturing_sources.end(); ++i) {
1986 cs_grandchild = new XMLNode (X_("file"));
1987 cs_grandchild->add_property (X_("path"), (*i)->path());
1988 cs_child->add_child_nocopy (*cs_grandchild);
1991 /* store the location where capture will start */
1995 if (_session.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1996 snprintf (buf, sizeof (buf), "%" PRIu32, pi->start());
1998 snprintf (buf, sizeof (buf), "%" PRIu32, _session.transport_frame());
2001 cs_child->add_property (X_("at"), buf);
2002 node->add_child_nocopy (*cs_child);
2006 node->add_child_copy (*_extra_xml);
2013 AudioDiskstream::set_state (const XMLNode& node)
2015 const XMLProperty* prop;
2016 XMLNodeList nlist = node.children();
2017 XMLNodeIterator niter;
2018 uint32_t nchans = 1;
2019 XMLNode* capture_pending_node = 0;
2020 LocaleGuard lg (X_("POSIX"));
2022 in_set_state = true;
2024 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
2025 if ((*niter)->name() == IO::state_node_name) {
2026 deprecated_io_node = new XMLNode (**niter);
2029 if ((*niter)->name() == X_("CapturingSources")) {
2030 capture_pending_node = *niter;
2034 /* prevent write sources from being created */
2036 in_set_state = true;
2038 if ((prop = node.property ("name")) != 0) {
2039 _name = prop->value();
2042 if (deprecated_io_node) {
2043 if ((prop = deprecated_io_node->property ("id")) != 0) {
2044 _id = prop->value ();
2047 if ((prop = node.property ("id")) != 0) {
2048 _id = prop->value ();
2052 if ((prop = node.property ("flags")) != 0) {
2053 _flags = strtol (prop->value().c_str(), 0, 0);
2056 if ((prop = node.property ("channels")) != 0) {
2057 nchans = atoi (prop->value().c_str());
2060 // create necessary extra channels
2061 // we are always constructed with one
2062 // and we always need one
2064 if (nchans > _n_channels) {
2066 // we need to add new channel infos
2067 //LockMonitor lm (state_lock, __LINE__, __FILE__);
2069 int diff = nchans - channels.size();
2071 for (int i=0; i < diff; ++i) {
2075 } else if (nchans < _n_channels) {
2077 // we need to get rid of channels
2078 //LockMonitor lm (state_lock, __LINE__, __FILE__);
2080 int diff = channels.size() - nchans;
2082 for (int i = 0; i < diff; ++i) {
2087 if ((prop = node.property ("playlist")) == 0) {
2092 bool had_playlist = (_playlist != 0);
2094 if (find_and_use_playlist (prop->value())) {
2098 if (!had_playlist) {
2099 _playlist->set_orig_diskstream_id (_id);
2102 if (!destructive() && capture_pending_node) {
2103 /* destructive streams have one and only one source per channel,
2104 and so they never end up in pending capture in any useful
2107 use_pending_capture_data (*capture_pending_node);
2112 if ((prop = node.property ("speed")) != 0) {
2113 double sp = atof (prop->value().c_str());
2115 if (realtime_set_speed (sp, false)) {
2116 non_realtime_set_speed ();
2120 _n_channels = channels.size();
2122 in_set_state = false;
2124 /* make sure this is clear before we do anything else */
2126 capturing_sources.clear ();
2128 /* write sources are handled when we handle the input set
2129 up of the IO that owns this DS (::non_realtime_input_change())
2132 in_set_state = false;
2138 AudioDiskstream::use_new_write_source (uint32_t n)
2140 if (!recordable()) {
2144 if (n >= channels.size()) {
2145 error << string_compose (_("AudioDiskstream: channel %1 out of range"), n) << endmsg;
2149 ChannelInfo &chan = channels[n];
2151 if (chan.write_source) {
2153 if (AudioFileSource::is_empty (chan.write_source->path())) {
2154 chan.write_source->mark_for_remove ();
2155 chan.write_source->release();
2156 delete chan.write_source;
2158 chan.write_source->release();
2159 chan.write_source = 0;
2164 if ((chan.write_source = _session.create_audio_source_for_session (*this, n, destructive())) == 0) {
2165 throw failed_constructor();
2169 catch (failed_constructor &err) {
2170 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
2171 chan.write_source = 0;
2175 chan.write_source->use ();
2177 /* do not remove destructive files even if they are empty */
2179 chan.write_source->set_allow_remove_if_empty (!destructive());
2185 AudioDiskstream::reset_write_sources (bool mark_write_complete, bool force)
2187 ChannelList::iterator chan;
2190 if (!recordable()) {
2194 capturing_sources.clear ();
2196 for (chan = channels.begin(), n = 0; chan != channels.end(); ++chan, ++n) {
2197 if (!destructive()) {
2199 if ((*chan).write_source && mark_write_complete) {
2200 (*chan).write_source->mark_streaming_write_completed ();
2202 use_new_write_source (n);
2204 if (record_enabled()) {
2205 capturing_sources.push_back ((*chan).write_source);
2209 if ((*chan).write_source == 0) {
2210 use_new_write_source (n);
2215 if (destructive()) {
2217 /* we now have all our write sources set up, so create the
2218 playlist's single region.
2221 if (_playlist->empty()) {
2222 setup_destructive_playlist ();
2228 AudioDiskstream::rename_write_sources ()
2230 ChannelList::iterator chan;
2233 for (chan = channels.begin(), n = 0; chan != channels.end(); ++chan, ++n) {
2234 if ((*chan).write_source != 0) {
2235 (*chan).write_source->set_name (_name, destructive());
2236 /* XXX what to do if one of them fails ? */
2244 AudioDiskstream::set_block_size (jack_nframes_t nframes)
2246 if (_session.get_block_size() > speed_buffer_size) {
2247 speed_buffer_size = _session.get_block_size();
2249 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
2250 if ((*chan).speed_buffer) delete [] (*chan).speed_buffer;
2251 (*chan).speed_buffer = new Sample[speed_buffer_size];
2254 allocate_temporary_buffers ();
2258 AudioDiskstream::allocate_temporary_buffers ()
2260 /* make sure the wrap buffer is at least large enough to deal
2261 with the speeds up to 1.2, to allow for micro-variation
2262 when slaving to MTC, SMPTE etc.
2265 double sp = max (fabsf (_actual_speed), 1.2f);
2266 jack_nframes_t required_wrap_size = (jack_nframes_t) floor (_session.get_block_size() * sp) + 1;
2268 if (required_wrap_size > wrap_buffer_size) {
2270 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
2271 if ((*chan).playback_wrap_buffer) delete [] (*chan).playback_wrap_buffer;
2272 (*chan).playback_wrap_buffer = new Sample[required_wrap_size];
2273 if ((*chan).capture_wrap_buffer) delete [] (*chan).capture_wrap_buffer;
2274 (*chan).capture_wrap_buffer = new Sample[required_wrap_size];
2277 wrap_buffer_size = required_wrap_size;
2282 AudioDiskstream::monitor_input (bool yn)
2284 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
2286 if ((*chan).source) {
2287 (*chan).source->request_monitor_input (yn);
2293 AudioDiskstream::set_capture_offset ()
2296 /* can't capture, so forget it */
2300 _capture_offset = _io->input_latency();
2304 AudioDiskstream::set_persistent_align_style (AlignStyle a)
2306 _persistent_alignment_style = a;
2310 AudioDiskstream::set_align_style_from_io ()
2312 bool have_physical = false;
2318 get_input_sources ();
2320 for (ChannelList::iterator chan = channels.begin(); chan != channels.end(); ++chan) {
2321 if ((*chan).source && (*chan).source->flags() & JackPortIsPhysical) {
2322 have_physical = true;
2327 if (have_physical) {
2328 set_align_style (ExistingMaterial);
2330 set_align_style (CaptureTime);
2335 AudioDiskstream::set_align_style (AlignStyle a)
2337 if (record_enabled() && _session.actively_recording()) {
2342 if (a != _alignment_style) {
2343 _alignment_style = a;
2344 AlignmentStyleChanged ();
2349 AudioDiskstream::add_channel ()
2351 /* XXX need to take lock??? */
2355 init_channel (chan);
2357 chan.speed_buffer = new Sample[speed_buffer_size];
2358 chan.playback_wrap_buffer = new Sample[wrap_buffer_size];
2359 chan.capture_wrap_buffer = new Sample[wrap_buffer_size];
2361 channels.push_back (chan);
2363 _n_channels = channels.size();
2369 AudioDiskstream::remove_channel ()
2371 if (channels.size() > 1) {
2372 /* XXX need to take lock??? */
2373 ChannelInfo & chan = channels.back();
2374 destroy_channel (chan);
2375 channels.pop_back();
2377 _n_channels = channels.size();
2385 AudioDiskstream::playback_buffer_load () const
2387 return (float) ((double) channels.front().playback_buf->read_space()/
2388 (double) channels.front().playback_buf->bufsize());
2392 AudioDiskstream::capture_buffer_load () const
2394 return (float) ((double) channels.front().capture_buf->write_space()/
2395 (double) channels.front().capture_buf->bufsize());
2399 AudioDiskstream::set_loop (Location *location)
2402 if (location->start() >= location->end()) {
2403 error << string_compose(_("Location \"%1\" not valid for track loop (start >= end)"), location->name()) << endl;
2408 loop_location = location;
2410 LoopSet (location); /* EMIT SIGNAL */
2415 AudioDiskstream::get_capture_start_frame (uint32_t n)
2417 Glib::Mutex::Lock lm (capture_info_lock);
2419 if (capture_info.size() > n) {
2420 return capture_info[n]->start;
2423 return capture_start_frame;
2428 AudioDiskstream::get_captured_frames (uint32_t n)
2430 Glib::Mutex::Lock lm (capture_info_lock);
2432 if (capture_info.size() > n) {
2433 return capture_info[n]->frames;
2436 return capture_captured;
2441 AudioDiskstream::punch_in ()
2446 AudioDiskstream::punch_out ()
2451 AudioDiskstream::use_pending_capture_data (XMLNode& node)
2453 const XMLProperty* prop;
2454 XMLNodeList nlist = node.children();
2455 XMLNodeIterator niter;
2456 AudioFileSource* fs;
2457 AudioFileSource* first_fs = 0;
2458 AudioRegion::SourceList pending_sources;
2459 jack_nframes_t position;
2461 if ((prop = node.property (X_("at"))) == 0) {
2465 if (sscanf (prop->value().c_str(), "%" PRIu32, &position) != 1) {
2469 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
2470 if ((*niter)->name() == X_("file")) {
2472 if ((prop = (*niter)->property (X_("path"))) == 0) {
2477 fs = new SndFileSource (prop->value(),
2478 Config->get_native_file_data_format(),
2479 Config->get_native_file_header_format(),
2480 _session.frame_rate());
2483 catch (failed_constructor& err) {
2484 error << string_compose (_("%1: cannot restore pending capture source file %2"),
2485 _name, prop->value())
2490 pending_sources.push_back (fs);
2492 if (first_fs == 0) {
2496 fs->set_captured_for (_name);
2500 if (pending_sources.size() == 0) {
2501 /* nothing can be done */
2505 if (pending_sources.size() != _n_channels) {
2506 error << string_compose (_("%1: incorrect number of pending sources listed - ignoring them all"), _name)
2511 AudioRegion* region;
2514 region = new AudioRegion (pending_sources, 0, first_fs->length(),
2515 region_name_from_path (first_fs->name()),
2516 0, AudioRegion::Flag (AudioRegion::DefaultFlags|AudioRegion::Automatic|AudioRegion::WholeFile));
2518 region->special_set_position (0);
2521 catch (failed_constructor& err) {
2522 error << string_compose (_("%1: cannot create whole-file region from pending capture sources"),
2530 region = new AudioRegion (pending_sources, 0, first_fs->length(), region_name_from_path (first_fs->name()));
2533 catch (failed_constructor& err) {
2534 error << string_compose (_("%1: cannot create region from pending capture sources"),
2541 _playlist->add_region (*region, position);
2547 AudioDiskstream::set_roll_delay (jack_nframes_t nframes)
2549 _roll_delay = nframes;
2553 AudioDiskstream::set_destructive (bool yn)
2555 if (yn != destructive()) {
2556 reset_write_sources (true, true);
2558 _flags |= Destructive;
2560 _flags &= ~Destructive;