2 Copyright (C) 2000-2006 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.
33 #include "pbd/error.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"
40 #include "ardour/analyser.h"
41 #include "ardour/ardour.h"
42 #include "ardour/audio_buffer.h"
43 #include "ardour/audio_diskstream.h"
44 #include "ardour/audio_port.h"
45 #include "ardour/audioengine.h"
46 #include "ardour/audiofilesource.h"
48 #include "ardour/audioplaylist.h"
49 #include "ardour/audioregion.h"
50 #include "ardour/butler.h"
51 #include "ardour/configuration.h"
52 #include "ardour/cycle_timer.h"
53 #include "ardour/debug.h"
54 #include "ardour/io.h"
55 #include "ardour/playlist_factory.h"
56 #include "ardour/region_factory.h"
57 #include "ardour/send.h"
58 #include "ardour/session.h"
59 #include "ardour/source_factory.h"
60 #include "ardour/utils.h"
61 #include "ardour/session_playlists.h"
62 #include "ardour/route.h"
68 using namespace ARDOUR;
71 size_t AudioDiskstream::_working_buffers_size = 0;
72 Sample* AudioDiskstream::_mixdown_buffer = 0;
73 gain_t* AudioDiskstream::_gain_buffer = 0;
75 AudioDiskstream::AudioDiskstream (Session &sess, const string &name, Diskstream::Flag flag)
76 : Diskstream(sess, name, flag)
77 , deprecated_io_node(NULL)
78 , channels (new ChannelList)
80 /* prevent any write sources from being created */
87 AudioDiskstream::AudioDiskstream (Session& sess, const XMLNode& node)
88 : Diskstream(sess, node)
89 , deprecated_io_node(NULL)
90 , channels (new ChannelList)
95 if (set_state (node, Stateful::loading_state_version)) {
97 throw failed_constructor();
100 in_set_state = false;
103 use_destructive_playlist ();
108 AudioDiskstream::init ()
110 /* there are no channels at this point, so these
111 two calls just get speed_buffer_size and wrap_buffer
112 size setup without duplicating their code.
115 set_block_size (_session.get_block_size());
116 allocate_temporary_buffers ();
119 AudioDiskstream::~AudioDiskstream ()
121 DEBUG_TRACE (DEBUG::Destruction, string_compose ("Audio Diskstream %1 destructor\n", _name));
124 RCUWriter<ChannelList> writer (channels);
125 boost::shared_ptr<ChannelList> c = writer.get_copy();
127 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
136 delete deprecated_io_node;
140 AudioDiskstream::allocate_working_buffers()
142 assert(disk_io_frames() > 0);
144 _working_buffers_size = disk_io_frames();
145 _mixdown_buffer = new Sample[_working_buffers_size];
146 _gain_buffer = new gain_t[_working_buffers_size];
150 AudioDiskstream::free_working_buffers()
152 delete [] _mixdown_buffer;
153 delete [] _gain_buffer;
154 _working_buffers_size = 0;
160 AudioDiskstream::non_realtime_input_change ()
163 Glib::Mutex::Lock lm (state_lock);
165 if (input_change_pending.type == IOChange::NoChange) {
170 RCUWriter<ChannelList> writer (channels);
171 boost::shared_ptr<ChannelList> c = writer.get_copy();
173 _n_channels.set(DataType::AUDIO, c->size());
175 if (_io->n_ports().n_audio() > _n_channels.n_audio()) {
176 add_channel_to (c, _io->n_ports().n_audio() - _n_channels.n_audio());
177 } else if (_io->n_ports().n_audio() < _n_channels.n_audio()) {
178 remove_channel_from (c, _n_channels.n_audio() - _io->n_ports().n_audio());
182 get_input_sources ();
183 set_capture_offset ();
185 if (first_input_change) {
186 set_align_style (_persistent_alignment_style);
187 first_input_change = false;
189 set_align_style_from_io ();
192 input_change_pending = IOChange::NoChange;
194 /* implicit unlock */
197 /* reset capture files */
199 reset_write_sources (false);
201 /* now refill channel buffers */
203 if (speed() != 1.0f || speed() != -1.0f) {
204 seek ((framepos_t) (_session.transport_frame() * (double) speed()));
206 seek (_session.transport_frame());
211 AudioDiskstream::non_realtime_locate (framepos_t location)
213 /* now refill channel buffers */
215 if (speed() != 1.0f || speed() != -1.0f) {
216 seek ((framepos_t) (location * (double) speed()));
223 AudioDiskstream::get_input_sources ()
225 boost::shared_ptr<ChannelList> c = channels.reader();
228 ChannelList::iterator chan;
229 uint32_t ni = _io->n_ports().n_audio();
230 vector<string> connections;
232 for (n = 0, chan = c->begin(); chan != c->end() && n < ni; ++chan, ++n) {
234 connections.clear ();
236 if (_io->nth (n)->get_connections (connections) == 0) {
238 if ((*chan)->source) {
239 // _source->disable_metering ();
245 (*chan)->source = dynamic_cast<AudioPort*>(_session.engine().get_port_by_name (connections[0]) );
251 AudioDiskstream::find_and_use_playlist (const string& name)
253 boost::shared_ptr<AudioPlaylist> playlist;
255 if ((playlist = boost::dynamic_pointer_cast<AudioPlaylist> (_session.playlists->by_name (name))) == 0) {
256 playlist = boost::dynamic_pointer_cast<AudioPlaylist> (PlaylistFactory::create (DataType::AUDIO, _session, name));
260 error << string_compose(_("AudioDiskstream: Playlist \"%1\" isn't an audio playlist"), name) << endmsg;
264 return use_playlist (playlist);
268 AudioDiskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
270 assert(boost::dynamic_pointer_cast<AudioPlaylist>(playlist));
272 Diskstream::use_playlist(playlist);
278 AudioDiskstream::use_new_playlist ()
281 boost::shared_ptr<AudioPlaylist> playlist;
283 if (!in_set_state && destructive()) {
288 newname = Playlist::bump_name (_playlist->name(), _session);
290 newname = Playlist::bump_name (_name, _session);
293 if ((playlist = boost::dynamic_pointer_cast<AudioPlaylist> (PlaylistFactory::create (DataType::AUDIO, _session, newname, hidden()))) != 0) {
295 playlist->set_orig_diskstream_id (id());
296 return use_playlist (playlist);
304 AudioDiskstream::use_copy_playlist ()
306 assert(audio_playlist());
312 if (_playlist == 0) {
313 error << string_compose(_("AudioDiskstream %1: there is no existing playlist to make a copy of!"), _name) << endmsg;
318 boost::shared_ptr<AudioPlaylist> playlist;
320 newname = Playlist::bump_name (_playlist->name(), _session);
322 if ((playlist = boost::dynamic_pointer_cast<AudioPlaylist>(PlaylistFactory::create (audio_playlist(), newname))) != 0) {
323 playlist->set_orig_diskstream_id (id());
324 return use_playlist (playlist);
331 AudioDiskstream::setup_destructive_playlist ()
334 boost::shared_ptr<ChannelList> c = channels.reader();
336 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
337 srcs.push_back ((*chan)->write_source);
340 /* a single full-sized region */
342 assert (!srcs.empty ());
345 plist.add (Properties::name, _name.val());
346 plist.add (Properties::start, 0);
347 plist.add (Properties::length, max_framepos - (max_framepos - srcs.front()->natural_position()));
349 boost::shared_ptr<Region> region (RegionFactory::create (srcs, plist));
350 _playlist->add_region (region, srcs.front()->natural_position());
354 AudioDiskstream::use_destructive_playlist ()
356 /* this is called from the XML-based constructor or ::set_destructive. when called,
357 we already have a playlist and a region, but we need to
358 set up our sources for write. we use the sources associated
359 with the (presumed single, full-extent) region.
362 boost::shared_ptr<Region> rp = _playlist->find_next_region (_session.current_start_frame(), Start, 1);
365 reset_write_sources (false, true);
369 boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (rp);
372 throw failed_constructor();
375 /* be sure to stretch the region out to the maximum length */
377 region->set_length (max_framepos - region->position(), this);
380 ChannelList::iterator chan;
381 boost::shared_ptr<ChannelList> c = channels.reader();
383 for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
384 (*chan)->write_source = boost::dynamic_pointer_cast<AudioFileSource>(region->source (n));
385 assert((*chan)->write_source);
386 (*chan)->write_source->set_allow_remove_if_empty (false);
388 /* this might be false if we switched modes, so force it */
390 (*chan)->write_source->set_destructive (true);
393 /* the source list will never be reset for a destructive track */
397 AudioDiskstream::prepare_record_status(framepos_t capture_start_frame)
399 if (recordable() && destructive()) {
400 boost::shared_ptr<ChannelList> c = channels.reader();
401 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
403 RingBufferNPT<CaptureTransition>::rw_vector transvec;
404 (*chan)->capture_transition_buf->get_write_vector(&transvec);
406 if (transvec.len[0] > 0) {
407 transvec.buf[0]->type = CaptureStart;
408 transvec.buf[0]->capture_val = capture_start_frame;
409 (*chan)->capture_transition_buf->increment_write_ptr(1);
412 fatal << X_("programming error: capture_transition_buf is full on rec start! inconceivable!")
420 AudioDiskstream::process (framepos_t transport_frame, pframes_t nframes, bool can_record, bool rec_monitors_input, bool& need_butler)
423 boost::shared_ptr<ChannelList> c = channels.reader();
424 ChannelList::iterator chan;
426 framecnt_t rec_offset = 0;
427 framecnt_t rec_nframes = 0;
428 bool collect_playback = false;
430 playback_distance = 0;
432 if (!_io || !_io->active()) {
436 check_record_status (transport_frame, can_record);
442 Glib::Mutex::Lock sm (state_lock, Glib::TRY_LOCK);
448 adjust_capture_position = 0;
450 for (chan = c->begin(); chan != c->end(); ++chan) {
451 (*chan)->current_capture_buffer = 0;
452 (*chan)->current_playback_buffer = 0;
455 /* two conditions to test for here:
457 A: this track is rec-enabled, and the session has confirmed that we can record
458 B: this track is rec-enabled, has been recording, and we are set up for auto-punch-in
460 The second test is necessary to capture the extra material that arrives AFTER the transport
461 frame has left the punch range (which will cause the "can_record" argument to be false).
465 // Safeguard against situations where process() goes haywire when autopunching
466 // and last_recordable_frame < first_recordable_frame
468 if (last_recordable_frame < first_recordable_frame) {
469 last_recordable_frame = max_framepos;
472 OverlapType ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
474 calculate_record_range (ot, transport_frame, nframes, rec_nframes, rec_offset);
476 if (rec_nframes && !was_recording) {
477 capture_captured = 0;
478 was_recording = true;
481 if (can_record && !_last_capture_sources.empty()) {
482 _last_capture_sources.clear ();
487 uint32_t limit = _io->n_ports ().n_audio();
489 /* one or more ports could already have been removed from _io, but our
490 channel setup hasn't yet been updated. prevent us from trying to
491 use channels that correspond to missing ports. note that the
492 process callback (from which this is called) is always atomic
493 with respect to port removal/addition.
496 for (n = 0, chan = c->begin(); chan != c->end() && n < limit; ++chan, ++n) {
498 ChannelInfo* chaninfo (*chan);
500 chaninfo->capture_buf->get_write_vector (&chaninfo->capture_vector);
502 if (rec_nframes <= (framecnt_t) chaninfo->capture_vector.len[0]) {
504 chaninfo->current_capture_buffer = chaninfo->capture_vector.buf[0];
506 /* note: grab the entire port buffer, but only copy what we were supposed to
507 for recording, and use rec_offset
510 AudioPort* const ap = _io->audio (n);
512 assert(rec_nframes <= (framecnt_t) ap->get_audio_buffer(nframes).capacity());
513 memcpy (chaninfo->current_capture_buffer, ap->get_audio_buffer (nframes).data(rec_offset), sizeof (Sample) * rec_nframes);
518 framecnt_t total = chaninfo->capture_vector.len[0] + chaninfo->capture_vector.len[1];
520 if (rec_nframes > total) {
525 AudioPort* const ap = _io->audio (n);
528 Sample* buf = ap->get_audio_buffer(nframes).data();
529 framecnt_t first = chaninfo->capture_vector.len[0];
531 memcpy (chaninfo->capture_wrap_buffer, buf, sizeof (Sample) * first);
532 memcpy (chaninfo->capture_vector.buf[0], buf, sizeof (Sample) * first);
533 memcpy (chaninfo->capture_wrap_buffer+first, buf + first, sizeof (Sample) * (rec_nframes - first));
534 memcpy (chaninfo->capture_vector.buf[1], buf + first, sizeof (Sample) * (rec_nframes - first));
536 chaninfo->current_capture_buffer = chaninfo->capture_wrap_buffer;
543 finish_capture (rec_monitors_input, c);
550 /* data will be written to disk */
552 if (rec_nframes == nframes && rec_offset == 0) {
554 for (chan = c->begin(); chan != c->end(); ++chan) {
555 (*chan)->current_playback_buffer = (*chan)->current_capture_buffer;
558 playback_distance = nframes;
563 /* we can't use the capture buffer as the playback buffer, because
564 we recorded only a part of the current process' cycle data
568 collect_playback = true;
571 adjust_capture_position = rec_nframes;
573 } else if (can_record && record_enabled()) {
575 /* can't do actual capture yet - waiting for latency effects to finish before we start*/
577 for (chan = c->begin(); chan != c->end(); ++chan) {
578 (*chan)->current_playback_buffer = (*chan)->current_capture_buffer;
581 playback_distance = nframes;
585 collect_playback = true;
588 if (collect_playback) {
590 /* we're doing playback */
592 framecnt_t necessary_samples;
594 /* no varispeed playback if we're recording, because the output .... TBD */
596 if (rec_nframes == 0 && _actual_speed != 1.0f) {
597 necessary_samples = (framecnt_t) floor ((nframes * fabs (_actual_speed))) + 1;
599 necessary_samples = nframes;
602 for (chan = c->begin(); chan != c->end(); ++chan) {
603 (*chan)->playback_buf->get_read_vector (&(*chan)->playback_vector);
608 for (chan = c->begin(); chan != c->end(); ++chan, ++n) {
610 ChannelInfo* chaninfo (*chan);
612 if (necessary_samples <= (framecnt_t) chaninfo->playback_vector.len[0]) {
614 chaninfo->current_playback_buffer = chaninfo->playback_vector.buf[0];
617 framecnt_t total = chaninfo->playback_vector.len[0] + chaninfo->playback_vector.len[1];
619 if (necessary_samples > total) {
620 cerr << _name << " Need " << necessary_samples << " total = " << total << endl;
621 cerr << "underrun for " << _name << endl;
627 memcpy ((char *) chaninfo->playback_wrap_buffer,
628 chaninfo->playback_vector.buf[0],
629 chaninfo->playback_vector.len[0] * sizeof (Sample));
630 memcpy (chaninfo->playback_wrap_buffer + chaninfo->playback_vector.len[0],
631 chaninfo->playback_vector.buf[1],
632 (necessary_samples - chaninfo->playback_vector.len[0])
635 chaninfo->current_playback_buffer = chaninfo->playback_wrap_buffer;
640 if (rec_nframes == 0 && _actual_speed != 1.0f && _actual_speed != -1.0f) {
641 process_varispeed_playback(nframes, c);
643 playback_distance = nframes;
646 _speed = _target_speed;
652 if (commit (nframes)) {
661 AudioDiskstream::process_varispeed_playback (pframes_t nframes, boost::shared_ptr<ChannelList> c)
663 ChannelList::iterator chan;
665 interpolation.set_speed (_target_speed);
668 for (chan = c->begin(); chan != c->end(); ++chan, ++channel) {
669 ChannelInfo* chaninfo (*chan);
671 playback_distance = interpolation.interpolate (
672 channel, nframes, chaninfo->current_playback_buffer, chaninfo->speed_buffer);
674 chaninfo->current_playback_buffer = chaninfo->speed_buffer;
679 AudioDiskstream::commit (framecnt_t /* nframes */)
681 bool need_butler = false;
683 if (!_io || !_io->active()) {
687 if (_actual_speed < 0.0) {
688 playback_sample -= playback_distance;
690 playback_sample += playback_distance;
693 boost::shared_ptr<ChannelList> c = channels.reader();
694 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
696 (*chan)->playback_buf->increment_read_ptr (playback_distance);
698 if (adjust_capture_position) {
699 (*chan)->capture_buf->increment_write_ptr (adjust_capture_position);
703 if (adjust_capture_position != 0) {
704 capture_captured += adjust_capture_position;
705 adjust_capture_position = 0;
713 if (_io && _io->active()) {
714 need_butler = c->front()->playback_buf->write_space() >= c->front()->playback_buf->bufsize() / 2;
719 if (_io && _io->active()) {
720 need_butler = ((framecnt_t) c->front()->playback_buf->write_space() >= disk_io_chunk_frames)
721 || ((framecnt_t) c->front()->capture_buf->read_space() >= disk_io_chunk_frames);
723 need_butler = ((framecnt_t) c->front()->capture_buf->read_space() >= disk_io_chunk_frames);
731 AudioDiskstream::set_pending_overwrite (bool yn)
733 /* called from audio thread, so we can use the read ptr and playback sample as we wish */
735 _pending_overwrite = yn;
737 overwrite_frame = playback_sample;
739 boost::shared_ptr<ChannelList> c = channels.reader ();
741 overwrite_offset = c->front()->playback_buf->get_read_ptr();
746 AudioDiskstream::overwrite_existing_buffers ()
748 boost::shared_ptr<ChannelList> c = channels.reader();
750 _pending_overwrite = false;
754 Sample* mixdown_buffer;
757 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
759 overwrite_queued = false;
761 /* assume all are the same size */
762 framecnt_t size = c->front()->playback_buf->bufsize();
764 mixdown_buffer = new Sample[size];
765 gain_buffer = new float[size];
767 /* reduce size so that we can fill the buffer correctly. */
773 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan, ++n) {
775 start = overwrite_frame;
776 framecnt_t cnt = size;
778 /* to fill the buffer without resetting the playback sample, we need to
779 do it one or two chunks (normally two).
781 |----------------------------------------------------------------------|
785 |<- second chunk->||<----------------- first chunk ------------------>|
789 framecnt_t to_read = size - overwrite_offset;
791 if (read ((*chan)->playback_buf->buffer() + overwrite_offset, mixdown_buffer, gain_buffer, start, to_read, *chan, n, reversed)) {
792 error << string_compose(_("AudioDiskstream %1: when refilling, cannot read %2 from playlist at frame %3"),
793 _id, size, playback_sample) << endmsg;
801 if (read ((*chan)->playback_buf->buffer(), mixdown_buffer, gain_buffer,
802 start, cnt, *chan, n, reversed)) {
803 error << string_compose(_("AudioDiskstream %1: when refilling, cannot read %2 from playlist at frame %3"),
804 _id, size, playback_sample) << endmsg;
813 _pending_overwrite = false;
814 delete [] gain_buffer;
815 delete [] mixdown_buffer;
820 AudioDiskstream::seek (framepos_t frame, bool complete_refill)
824 ChannelList::iterator chan;
825 boost::shared_ptr<ChannelList> c = channels.reader();
827 Glib::Mutex::Lock lm (state_lock);
829 for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
830 (*chan)->playback_buf->reset ();
831 (*chan)->capture_buf->reset ();
834 /* can't rec-enable in destructive mode if transport is before start */
836 if (destructive() && record_enabled() && frame < _session.current_start_frame()) {
837 disengage_record_enable ();
840 playback_sample = frame;
843 if (complete_refill) {
844 while ((ret = do_refill_with_alloc ()) > 0) ;
846 ret = do_refill_with_alloc ();
853 AudioDiskstream::can_internal_playback_seek (framecnt_t distance)
855 ChannelList::iterator chan;
856 boost::shared_ptr<ChannelList> c = channels.reader();
858 for (chan = c->begin(); chan != c->end(); ++chan) {
859 if ((*chan)->playback_buf->read_space() < (size_t) distance) {
867 AudioDiskstream::internal_playback_seek (framecnt_t distance)
869 ChannelList::iterator chan;
870 boost::shared_ptr<ChannelList> c = channels.reader();
872 for (chan = c->begin(); chan != c->end(); ++chan) {
873 (*chan)->playback_buf->increment_read_ptr (distance);
876 if (first_recordable_frame < max_framepos) {
877 first_recordable_frame += distance;
879 playback_sample += distance;
885 AudioDiskstream::read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer,
886 framepos_t& start, framecnt_t cnt,
887 ChannelInfo* /*channel_info*/, int channel, bool reversed)
889 framecnt_t this_read = 0;
891 framepos_t loop_end = 0;
892 framepos_t loop_start = 0;
893 framecnt_t offset = 0;
896 /* XXX we don't currently play loops in reverse. not sure why */
900 framecnt_t loop_length = 0;
902 /* Make the use of a Location atomic for this read operation.
904 Note: Locations don't get deleted, so all we care about
905 when I say "atomic" is that we are always pointing to
906 the same one and using a start/length values obtained
910 if ((loc = loop_location) != 0) {
911 loop_start = loc->start();
912 loop_end = loc->end();
913 loop_length = loop_end - loop_start;
916 /* if we are looping, ensure that the first frame we read is at the correct
917 position within the loop.
920 if (loc && start >= loop_end) {
921 //cerr << "start adjusted from " << start;
922 start = loop_start + ((start - loop_start) % loop_length);
923 //cerr << "to " << start << endl;
926 //cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl;
935 /* take any loop into account. we can't read past the end of the loop. */
937 if (loc && (loop_end - start < cnt)) {
938 this_read = loop_end - start;
939 //cerr << "reloop true: thisread: " << this_read << " cnt: " << cnt << endl;
946 if (this_read == 0) {
950 this_read = min(cnt,this_read);
952 if (audio_playlist()->read (buf+offset, mixdown_buffer, gain_buffer, start, this_read, channel) != this_read) {
953 error << string_compose(_("AudioDiskstream %1: cannot read %2 from playlist at frame %3"), _id, this_read,
958 _read_data_count = _playlist->read_data_count();
962 swap_by_ptr (buf, buf + this_read - 1);
966 /* if we read to the end of the loop, go back to the beginning */
983 AudioDiskstream::do_refill_with_alloc ()
985 Sample* mix_buf = new Sample[disk_io_chunk_frames];
986 float* gain_buf = new float[disk_io_chunk_frames];
988 int ret = _do_refill(mix_buf, gain_buf);
997 AudioDiskstream::_do_refill (Sample* mixdown_buffer, float* gain_buffer)
1001 RingBufferNPT<Sample>::rw_vector vector;
1002 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
1003 framecnt_t total_space;
1004 framecnt_t zero_fill;
1006 ChannelList::iterator i;
1007 boost::shared_ptr<ChannelList> c = channels.reader();
1014 assert(mixdown_buffer);
1015 assert(gain_buffer);
1022 c->front()->playback_buf->get_write_vector (&vector);
1024 if ((total_space = vector.len[0] + vector.len[1]) == 0) {
1028 /* if there are 2+ chunks of disk i/o possible for
1029 this track, let the caller know so that it can arrange
1030 for us to be called again, ASAP.
1033 if (total_space >= (_slaved?3:2) * disk_io_chunk_frames) {
1037 /* if we're running close to normal speed and there isn't enough
1038 space to do disk_io_chunk_frames of I/O, then don't bother.
1040 at higher speeds, just do it because the sync between butler
1041 and audio thread may not be good enough.
1044 if ((total_space < disk_io_chunk_frames) && fabs (_actual_speed) < 2.0f) {
1048 /* when slaved, don't try to get too close to the read pointer. this
1049 leaves space for the buffer reversal to have something useful to
1053 if (_slaved && total_space < (framecnt_t) (c->front()->playback_buf->bufsize() / 2)) {
1057 /* never do more than disk_io_chunk_frames worth of disk input per call (limit doesn't apply for memset) */
1059 total_space = min (disk_io_chunk_frames, total_space);
1063 if (file_frame == 0) {
1065 /* at start: nothing to do but fill with silence */
1067 for (chan_n = 0, i = c->begin(); i != c->end(); ++i, ++chan_n) {
1069 ChannelInfo* chan (*i);
1070 chan->playback_buf->get_write_vector (&vector);
1071 memset (vector.buf[0], 0, sizeof(Sample) * vector.len[0]);
1072 if (vector.len[1]) {
1073 memset (vector.buf[1], 0, sizeof(Sample) * vector.len[1]);
1075 chan->playback_buf->increment_write_ptr (vector.len[0] + vector.len[1]);
1080 if (file_frame < total_space) {
1082 /* too close to the start: read what we can,
1083 and then zero fill the rest
1086 zero_fill = total_space - file_frame;
1087 total_space = file_frame;
1096 if (file_frame == max_framepos) {
1098 /* at end: nothing to do but fill with silence */
1100 for (chan_n = 0, i = c->begin(); i != c->end(); ++i, ++chan_n) {
1102 ChannelInfo* chan (*i);
1103 chan->playback_buf->get_write_vector (&vector);
1104 memset (vector.buf[0], 0, sizeof(Sample) * vector.len[0]);
1105 if (vector.len[1]) {
1106 memset (vector.buf[1], 0, sizeof(Sample) * vector.len[1]);
1108 chan->playback_buf->increment_write_ptr (vector.len[0] + vector.len[1]);
1113 if (file_frame > max_framepos - total_space) {
1115 /* to close to the end: read what we can, and zero fill the rest */
1117 zero_fill = total_space - (max_framepos - file_frame);
1118 total_space = max_framepos - file_frame;
1125 framepos_t file_frame_tmp = 0;
1127 for (chan_n = 0, i = c->begin(); i != c->end(); ++i, ++chan_n) {
1129 ChannelInfo* chan (*i);
1132 framecnt_t len1, len2;
1134 chan->playback_buf->get_write_vector (&vector);
1136 if ((framecnt_t) vector.len[0] > disk_io_chunk_frames) {
1138 /* we're not going to fill the first chunk, so certainly do not bother with the
1139 other part. it won't be connected with the part we do fill, as in:
1141 .... => writable space
1142 ++++ => readable space
1143 ^^^^ => 1 x disk_io_chunk_frames that would be filled
1145 |......|+++++++++++++|...............................|
1150 So, just pretend that the buf1 part isn't there.
1160 file_frame_tmp = file_frame;
1162 buf1 = vector.buf[0];
1163 len1 = vector.len[0];
1164 buf2 = vector.buf[1];
1165 len2 = vector.len[1];
1167 to_read = min (ts, len1);
1168 to_read = min (to_read, disk_io_chunk_frames);
1170 assert (to_read >= 0);
1174 if (read (buf1, mixdown_buffer, gain_buffer, file_frame_tmp, to_read, chan, chan_n, reversed)) {
1179 chan->playback_buf->increment_write_ptr (to_read);
1183 to_read = min (ts, len2);
1187 /* we read all of vector.len[0], but it wasn't an entire disk_io_chunk_frames of data,
1188 so read some or all of vector.len[1] as well.
1191 if (read (buf2, mixdown_buffer, gain_buffer, file_frame_tmp, to_read, chan, chan_n, reversed)) {
1196 chan->playback_buf->increment_write_ptr (to_read);
1205 file_frame = file_frame_tmp;
1206 assert (file_frame >= 0);
1213 /** Flush pending data to disk.
1215 * Important note: this function will write *AT MOST* disk_io_chunk_frames
1216 * of data to disk. it will never write more than that. If it writes that
1217 * much and there is more than that waiting to be written, it will return 1,
1218 * otherwise 0 on success or -1 on failure.
1220 * If there is less than disk_io_chunk_frames to be written, no data will be
1221 * written at all unless @a force_flush is true.
1224 AudioDiskstream::do_flush (RunContext /*context*/, bool force_flush)
1228 RingBufferNPT<Sample>::rw_vector vector;
1229 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1232 _write_data_count = 0;
1234 transvec.buf[0] = 0;
1235 transvec.buf[1] = 0;
1239 boost::shared_ptr<ChannelList> c = channels.reader();
1240 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1242 (*chan)->capture_buf->get_read_vector (&vector);
1244 total = vector.len[0] + vector.len[1];
1246 if (total == 0 || (total < disk_io_chunk_frames && !force_flush && was_recording)) {
1250 /* if there are 2+ chunks of disk i/o possible for
1251 this track, let the caller know so that it can arrange
1252 for us to be called again, ASAP.
1254 if we are forcing a flush, then if there is* any* extra
1255 work, let the caller know.
1257 if we are no longer recording and there is any extra work,
1258 let the caller know too.
1261 if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) {
1265 to_write = min (disk_io_chunk_frames, (framecnt_t) vector.len[0]);
1267 // check the transition buffer when recording destructive
1268 // important that we get this after the capture buf
1270 if (destructive()) {
1271 (*chan)->capture_transition_buf->get_read_vector(&transvec);
1272 size_t transcount = transvec.len[0] + transvec.len[1];
1273 bool have_start = false;
1276 for (ti=0; ti < transcount; ++ti) {
1277 CaptureTransition & captrans = (ti < transvec.len[0]) ? transvec.buf[0][ti] : transvec.buf[1][ti-transvec.len[0]];
1279 if (captrans.type == CaptureStart) {
1280 // by definition, the first data we got above represents the given capture pos
1282 (*chan)->write_source->mark_capture_start (captrans.capture_val);
1283 (*chan)->curr_capture_cnt = 0;
1287 else if (captrans.type == CaptureEnd) {
1289 // capture end, the capture_val represents total frames in capture
1291 if (captrans.capture_val <= (*chan)->curr_capture_cnt + to_write) {
1293 // shorten to make the write a perfect fit
1294 uint32_t nto_write = (captrans.capture_val - (*chan)->curr_capture_cnt);
1296 if (nto_write < to_write) {
1297 ret = 1; // should we?
1299 to_write = nto_write;
1301 (*chan)->write_source->mark_capture_end ();
1303 // increment past this transition, but go no further
1308 // actually ends just beyond this chunk, so force more work
1316 (*chan)->capture_transition_buf->increment_read_ptr(ti);
1320 if ((!(*chan)->write_source) || (*chan)->write_source->write (vector.buf[0], to_write) != to_write) {
1321 error << string_compose(_("AudioDiskstream %1: cannot write to disk"), _id) << endmsg;
1325 (*chan)->capture_buf->increment_read_ptr (to_write);
1326 (*chan)->curr_capture_cnt += to_write;
1328 if ((to_write == vector.len[0]) && (total > to_write) && (to_write < disk_io_chunk_frames) && !destructive()) {
1330 /* we wrote all of vector.len[0] but it wasn't an entire
1331 disk_io_chunk_frames of data, so arrange for some part
1332 of vector.len[1] to be flushed to disk as well.
1335 to_write = min ((framecnt_t)(disk_io_chunk_frames - to_write), (framecnt_t) vector.len[1]);
1337 if ((*chan)->write_source->write (vector.buf[1], to_write) != to_write) {
1338 error << string_compose(_("AudioDiskstream %1: cannot write to disk"), _id) << endmsg;
1342 _write_data_count += (*chan)->write_source->write_data_count();
1344 (*chan)->capture_buf->increment_read_ptr (to_write);
1345 (*chan)->curr_capture_cnt += to_write;
1354 AudioDiskstream::transport_stopped_wallclock (struct tm& when, time_t twhen, bool abort_capture)
1356 uint32_t buffer_position;
1357 bool more_work = true;
1359 boost::shared_ptr<AudioRegion> region;
1360 framecnt_t total_capture;
1362 SourceList::iterator src;
1363 ChannelList::iterator chan;
1364 vector<CaptureInfo*>::iterator ci;
1365 boost::shared_ptr<ChannelList> c = channels.reader();
1367 bool mark_write_completed = false;
1369 finish_capture (true, c);
1371 /* butler is already stopped, but there may be work to do
1372 to flush remaining data to disk.
1375 while (more_work && !err) {
1376 switch (do_flush (TransportContext, true)) {
1383 error << string_compose(_("AudioDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
1388 /* XXX is there anything we can do if err != 0 ? */
1389 Glib::Mutex::Lock lm (capture_info_lock);
1391 if (capture_info.empty()) {
1395 if (abort_capture) {
1397 if (destructive()) {
1401 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1403 if ((*chan)->write_source) {
1405 (*chan)->write_source->mark_for_remove ();
1406 (*chan)->write_source->drop_references ();
1407 (*chan)->write_source.reset ();
1410 /* new source set up in "out" below */
1416 for (total_capture = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1417 total_capture += (*ci)->frames;
1420 /* figure out the name for this take */
1422 for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
1424 boost::shared_ptr<AudioFileSource> s = (*chan)->write_source;
1428 if (s->unstubify ()) {
1429 error << string_compose (_("Could not move capture file from %1"), s->path()) << endmsg;
1431 s->update_header (capture_info.front()->start, when, twhen);
1432 s->set_captured_for (_name.val());
1433 s->mark_immutable ();
1435 if (Config->get_auto_analyse_audio()) {
1436 Analyser::queue_source_for_analysis (s, true);
1441 /* destructive tracks have a single, never changing region */
1443 if (destructive()) {
1445 /* send a signal that any UI can pick up to do the right thing. there is
1446 a small problem here in that a UI may need the peak data to be ready
1447 for the data that was recorded and this isn't interlocked with that
1448 process. this problem is deferred to the UI.
1451 _playlist->LayeringChanged(); // XXX this may not get the UI to do the right thing
1455 string whole_file_region_name;
1456 whole_file_region_name = region_name_from_path (c->front()->write_source->name(), true);
1458 /* Register a new region with the Session that
1459 describes the entire source. Do this first
1460 so that any sub-regions will obviously be
1461 children of this one (later!)
1467 plist.add (Properties::start, c->front()->write_source->last_capture_start_frame());
1468 plist.add (Properties::length, total_capture);
1469 plist.add (Properties::name, whole_file_region_name);
1470 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1471 rx->set_automatic (true);
1472 rx->set_whole_file (true);
1474 region = boost::dynamic_pointer_cast<AudioRegion> (rx);
1475 region->special_set_position (capture_info.front()->start);
1479 catch (failed_constructor& err) {
1480 error << string_compose(_("%1: could not create region for complete audio file"), _name) << endmsg;
1484 _last_capture_sources.insert (_last_capture_sources.end(), srcs.begin(), srcs.end());
1486 // cerr << _name << ": there are " << capture_info.size() << " capture_info records\n";
1488 _playlist->clear_changes ();
1489 _playlist->freeze ();
1491 for (buffer_position = c->front()->write_source->last_capture_start_frame(), ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1495 RegionFactory::region_name (region_name, whole_file_region_name, false);
1497 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add region " << region_name << endl;
1503 plist.add (Properties::start, buffer_position);
1504 plist.add (Properties::length, (*ci)->frames);
1505 plist.add (Properties::name, region_name);
1507 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1508 region = boost::dynamic_pointer_cast<AudioRegion> (rx);
1511 catch (failed_constructor& err) {
1512 error << _("AudioDiskstream: could not create region for captured audio!") << endmsg;
1513 continue; /* XXX is this OK? */
1516 i_am_the_modifier++;
1518 if (_playlist->explicit_relayering()) {
1519 /* We are in `explicit relayering' mode, so we must specify which layer this new region
1520 should end up on. Put it at the top.
1522 region->set_layer (_playlist->top_layer() + 1);
1523 region->set_pending_explicit_relayer (true);
1526 _playlist->add_region (region, (*ci)->start, 1, non_layered());
1527 i_am_the_modifier--;
1529 buffer_position += (*ci)->frames;
1533 _session.add_command (new StatefulDiffCommand (_playlist));
1536 mark_write_completed = true;
1539 reset_write_sources (mark_write_completed);
1543 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1547 capture_info.clear ();
1548 capture_start_frame = 0;
1552 AudioDiskstream::transport_looped (framepos_t transport_frame)
1554 if (was_recording) {
1555 // all we need to do is finish this capture, with modified capture length
1556 boost::shared_ptr<ChannelList> c = channels.reader();
1558 // adjust the capture length knowing that the data will be recorded to disk
1559 // only necessary after the first loop where we're recording
1560 if (capture_info.size() == 0) {
1561 capture_captured += _capture_offset;
1563 if (_alignment_style == ExistingMaterial) {
1564 capture_captured += _session.worst_output_latency();
1566 capture_captured += _roll_delay;
1570 finish_capture (true, c);
1572 // the next region will start recording via the normal mechanism
1573 // we'll set the start position to the current transport pos
1574 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1575 capture_start_frame = transport_frame;
1576 first_recordable_frame = transport_frame; // mild lie
1577 last_recordable_frame = max_framepos;
1578 was_recording = true;
1580 if (recordable() && destructive()) {
1581 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1583 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1584 (*chan)->capture_transition_buf->get_write_vector(&transvec);
1586 if (transvec.len[0] > 0) {
1587 transvec.buf[0]->type = CaptureStart;
1588 transvec.buf[0]->capture_val = capture_start_frame;
1589 (*chan)->capture_transition_buf->increment_write_ptr(1);
1593 fatal << X_("programming error: capture_transition_buf is full on rec loop! inconceivable!")
1603 AudioDiskstream::finish_capture (bool /*rec_monitors_input*/, boost::shared_ptr<ChannelList> c)
1605 was_recording = false;
1606 first_recordable_frame = max_framepos;
1607 last_recordable_frame = max_framepos;
1609 if (capture_captured == 0) {
1613 if (recordable() && destructive()) {
1614 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1616 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1617 (*chan)->capture_transition_buf->get_write_vector(&transvec);
1619 if (transvec.len[0] > 0) {
1620 transvec.buf[0]->type = CaptureEnd;
1621 transvec.buf[0]->capture_val = capture_captured;
1622 (*chan)->capture_transition_buf->increment_write_ptr(1);
1626 fatal << string_compose (_("programmer error: %1"), X_("capture_transition_buf is full when stopping record! inconceivable!")) << endmsg;
1632 CaptureInfo* ci = new CaptureInfo;
1634 ci->start = capture_start_frame;
1635 ci->frames = capture_captured;
1637 /* XXX theoretical race condition here. Need atomic exchange ?
1638 However, the circumstances when this is called right
1639 now (either on record-disable or transport_stopped)
1640 mean that no actual race exists. I think ...
1641 We now have a capture_info_lock, but it is only to be used
1642 to synchronize in the transport_stop and the capture info
1643 accessors, so that invalidation will not occur (both non-realtime).
1646 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1648 capture_info.push_back (ci);
1649 capture_captured = 0;
1651 /* now we've finished a capture, reset first_recordable_frame for next time */
1652 first_recordable_frame = max_framepos;
1656 AudioDiskstream::set_record_enabled (bool yn)
1658 if (!recordable() || !_session.record_enabling_legal() || _io->n_ports().n_audio() == 0) {
1662 /* can't rec-enable in destructive mode if transport is before start */
1664 if (destructive() && yn && _session.transport_frame() < _session.current_start_frame()) {
1668 /* yes, i know that this not proof against race conditions, but its
1669 good enough. i think.
1672 if (record_enabled() != yn) {
1674 engage_record_enable ();
1676 disengage_record_enable ();
1682 AudioDiskstream::engage_record_enable ()
1684 bool rolling = _session.transport_speed() != 0.0f;
1685 boost::shared_ptr<ChannelList> c = channels.reader();
1687 g_atomic_int_set (&_record_enabled, 1);
1688 capturing_sources.clear ();
1690 if (Config->get_monitoring_model() == HardwareMonitoring) {
1692 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1693 if ((*chan)->source) {
1694 (*chan)->source->ensure_monitor_input (!(_session.config.get_auto_input() && rolling));
1696 capturing_sources.push_back ((*chan)->write_source);
1697 (*chan)->write_source->mark_streaming_write_started ();
1701 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1702 capturing_sources.push_back ((*chan)->write_source);
1703 (*chan)->write_source->mark_streaming_write_started ();
1707 RecordEnableChanged (); /* EMIT SIGNAL */
1711 AudioDiskstream::disengage_record_enable ()
1713 g_atomic_int_set (&_record_enabled, 0);
1714 boost::shared_ptr<ChannelList> c = channels.reader();
1715 if (Config->get_monitoring_model() == HardwareMonitoring) {
1716 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1717 if ((*chan)->source) {
1718 (*chan)->source->ensure_monitor_input (false);
1722 capturing_sources.clear ();
1723 RecordEnableChanged (); /* EMIT SIGNAL */
1727 AudioDiskstream::get_state ()
1729 XMLNode* node = new XMLNode ("Diskstream");
1731 LocaleGuard lg (X_("POSIX"));
1732 boost::shared_ptr<ChannelList> c = channels.reader();
1734 node->add_property ("flags", enum_2_string (_flags));
1736 snprintf (buf, sizeof(buf), "%zd", c->size());
1737 node->add_property ("channels", buf);
1739 node->add_property ("playlist", _playlist->name());
1741 snprintf (buf, sizeof(buf), "%.12g", _visible_speed);
1742 node->add_property ("speed", buf);
1744 node->add_property("name", _name);
1745 id().print (buf, sizeof (buf));
1746 node->add_property("id", buf);
1748 if (!capturing_sources.empty() && _session.get_record_enabled()) {
1750 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1751 XMLNode* cs_grandchild;
1753 for (vector<boost::shared_ptr<AudioFileSource> >::iterator i = capturing_sources.begin(); i != capturing_sources.end(); ++i) {
1754 cs_grandchild = new XMLNode (X_("file"));
1755 cs_grandchild->add_property (X_("path"), (*i)->path());
1756 cs_child->add_child_nocopy (*cs_grandchild);
1759 /* store the location where capture will start */
1763 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1764 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1766 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1769 cs_child->add_property (X_("at"), buf);
1770 node->add_child_nocopy (*cs_child);
1774 node->add_child_copy (*_extra_xml);
1781 AudioDiskstream::set_state (const XMLNode& node, int /*version*/)
1783 const XMLProperty* prop;
1784 XMLNodeList nlist = node.children();
1785 XMLNodeIterator niter;
1786 uint32_t nchans = 1;
1787 XMLNode* capture_pending_node = 0;
1788 LocaleGuard lg (X_("POSIX"));
1790 in_set_state = true;
1792 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1793 if ((*niter)->name() == IO::state_node_name) {
1794 deprecated_io_node = new XMLNode (**niter);
1797 if ((*niter)->name() == X_("CapturingSources")) {
1798 capture_pending_node = *niter;
1802 /* prevent write sources from being created */
1804 in_set_state = true;
1806 if ((prop = node.property ("name")) != 0) {
1807 _name = prop->value();
1810 if (deprecated_io_node) {
1811 if ((prop = deprecated_io_node->property ("id")) != 0) {
1812 _id = prop->value ();
1815 if ((prop = node.property ("id")) != 0) {
1816 _id = prop->value ();
1820 if ((prop = node.property ("flags")) != 0) {
1821 _flags = Flag (string_2_enum (prop->value(), _flags));
1824 if ((prop = node.property ("channels")) != 0) {
1825 nchans = atoi (prop->value().c_str());
1828 // create necessary extra channels
1829 // we are always constructed with one and we always need one
1831 _n_channels.set(DataType::AUDIO, channels.reader()->size());
1833 if (nchans > _n_channels.n_audio()) {
1835 add_channel (nchans - _n_channels.n_audio());
1836 IO::PortCountChanged(_n_channels);
1838 } else if (nchans < _n_channels.n_audio()) {
1840 remove_channel (_n_channels.n_audio() - nchans);
1843 if ((prop = node.property ("playlist")) == 0) {
1848 bool had_playlist = (_playlist != 0);
1850 if (find_and_use_playlist (prop->value())) {
1854 if (!had_playlist) {
1855 _playlist->set_orig_diskstream_id (id());
1858 if (!destructive() && capture_pending_node) {
1859 /* destructive streams have one and only one source per channel,
1860 and so they never end up in pending capture in any useful
1863 use_pending_capture_data (*capture_pending_node);
1868 if ((prop = node.property ("speed")) != 0) {
1869 double sp = atof (prop->value().c_str());
1871 if (realtime_set_speed (sp, false)) {
1872 non_realtime_set_speed ();
1876 in_set_state = false;
1878 /* make sure this is clear before we do anything else */
1880 capturing_sources.clear ();
1882 /* write sources are handled when we handle the input set
1883 up of the IO that owns this DS (::non_realtime_input_change())
1890 AudioDiskstream::use_new_write_source (uint32_t n)
1892 boost::shared_ptr<ChannelList> c = channels.reader();
1894 if (!recordable()) {
1898 if (n >= c->size()) {
1899 error << string_compose (_("AudioDiskstream: channel %1 out of range"), n) << endmsg;
1903 ChannelInfo* chan = (*c)[n];
1906 /* file starts off as a stub file, it will be converted
1907 when we're done with a capture pass.
1910 if ((chan->write_source = _session.create_audio_source_for_session (n_channels().n_audio(),
1911 name(), n, destructive(),
1913 throw failed_constructor();
1917 catch (failed_constructor &err) {
1918 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1919 chan->write_source.reset ();
1923 /* do not remove destructive files even if they are empty */
1925 chan->write_source->set_allow_remove_if_empty (!destructive());
1930 list<boost::shared_ptr<Source> >
1931 AudioDiskstream::steal_write_sources()
1933 /* not possible to steal audio write sources */
1934 list<boost::shared_ptr<Source> > ret;
1939 AudioDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1941 ChannelList::iterator chan;
1942 boost::shared_ptr<ChannelList> c = channels.reader();
1945 if (!_session.writable() || !recordable()) {
1949 capturing_sources.clear ();
1951 for (chan = c->begin(), n = 0; chan != c->end(); ++chan, ++n) {
1953 if (!destructive()) {
1955 if ((*chan)->write_source) {
1957 if (mark_write_complete) {
1958 (*chan)->write_source->mark_streaming_write_completed ();
1959 (*chan)->write_source->done_with_peakfile_writes ();
1962 if ((*chan)->write_source->removable()) {
1963 (*chan)->write_source->mark_for_remove ();
1964 (*chan)->write_source->drop_references ();
1967 (*chan)->write_source.reset ();
1970 use_new_write_source (n);
1972 if (record_enabled()) {
1973 capturing_sources.push_back ((*chan)->write_source);
1978 if ((*chan)->write_source == 0) {
1979 use_new_write_source (n);
1984 if (destructive() && !c->empty ()) {
1986 /* we now have all our write sources set up, so create the
1987 playlist's single region.
1990 if (_playlist->empty()) {
1991 setup_destructive_playlist ();
1997 AudioDiskstream::rename_write_sources ()
1999 ChannelList::iterator chan;
2000 boost::shared_ptr<ChannelList> c = channels.reader();
2003 for (chan = c->begin(), n = 0; chan != c->end(); ++chan, ++n) {
2004 if ((*chan)->write_source != 0) {
2005 (*chan)->write_source->set_source_name (_name.val(), destructive());
2006 /* XXX what to do if one of them fails ? */
2014 AudioDiskstream::set_block_size (pframes_t /*nframes*/)
2016 if (_session.get_block_size() > speed_buffer_size) {
2017 speed_buffer_size = _session.get_block_size();
2018 boost::shared_ptr<ChannelList> c = channels.reader();
2020 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2021 if ((*chan)->speed_buffer)
2022 delete [] (*chan)->speed_buffer;
2023 (*chan)->speed_buffer = new Sample[speed_buffer_size];
2026 allocate_temporary_buffers ();
2030 AudioDiskstream::allocate_temporary_buffers ()
2032 /* make sure the wrap buffer is at least large enough to deal
2033 with the speeds up to 1.2, to allow for micro-variation
2034 when slaving to MTC, Timecode etc.
2037 double const sp = max (fabsf (_actual_speed), 1.2f);
2038 framecnt_t required_wrap_size = (framecnt_t) floor (_session.get_block_size() * sp) + 1;
2040 if (required_wrap_size > wrap_buffer_size) {
2042 boost::shared_ptr<ChannelList> c = channels.reader();
2044 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2045 if ((*chan)->playback_wrap_buffer)
2046 delete [] (*chan)->playback_wrap_buffer;
2047 (*chan)->playback_wrap_buffer = new Sample[required_wrap_size];
2048 if ((*chan)->capture_wrap_buffer)
2049 delete [] (*chan)->capture_wrap_buffer;
2050 (*chan)->capture_wrap_buffer = new Sample[required_wrap_size];
2053 wrap_buffer_size = required_wrap_size;
2058 AudioDiskstream::monitor_input (bool yn)
2060 boost::shared_ptr<ChannelList> c = channels.reader();
2062 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2064 if ((*chan)->source) {
2065 (*chan)->source->ensure_monitor_input (yn);
2071 AudioDiskstream::set_align_style_from_io ()
2073 bool have_physical = false;
2079 get_input_sources ();
2081 boost::shared_ptr<ChannelList> c = channels.reader();
2083 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2084 if ((*chan)->source && (*chan)->source->flags() & JackPortIsPhysical) {
2085 have_physical = true;
2090 if (have_physical) {
2091 set_align_style (ExistingMaterial);
2093 set_align_style (CaptureTime);
2098 AudioDiskstream::add_channel_to (boost::shared_ptr<ChannelList> c, uint32_t how_many)
2100 while (how_many--) {
2101 c->push_back (new ChannelInfo(_session.butler()->audio_diskstream_playback_buffer_size(),
2102 _session.butler()->audio_diskstream_capture_buffer_size(),
2103 speed_buffer_size, wrap_buffer_size));
2104 interpolation.add_channel_to (_session.butler()->audio_diskstream_playback_buffer_size(), speed_buffer_size);
2107 _n_channels.set(DataType::AUDIO, c->size());
2113 AudioDiskstream::add_channel (uint32_t how_many)
2115 RCUWriter<ChannelList> writer (channels);
2116 boost::shared_ptr<ChannelList> c = writer.get_copy();
2118 return add_channel_to (c, how_many);
2122 AudioDiskstream::remove_channel_from (boost::shared_ptr<ChannelList> c, uint32_t how_many)
2124 while (how_many-- && !c->empty()) {
2127 interpolation.remove_channel_from ();
2130 _n_channels.set(DataType::AUDIO, c->size());
2136 AudioDiskstream::remove_channel (uint32_t how_many)
2138 RCUWriter<ChannelList> writer (channels);
2139 boost::shared_ptr<ChannelList> c = writer.get_copy();
2141 return remove_channel_from (c, how_many);
2145 AudioDiskstream::playback_buffer_load () const
2147 boost::shared_ptr<ChannelList> c = channels.reader();
2153 return (float) ((double) c->front()->playback_buf->read_space()/
2154 (double) c->front()->playback_buf->bufsize());
2158 AudioDiskstream::capture_buffer_load () const
2160 boost::shared_ptr<ChannelList> c = channels.reader();
2166 return (float) ((double) c->front()->capture_buf->write_space()/
2167 (double) c->front()->capture_buf->bufsize());
2171 AudioDiskstream::use_pending_capture_data (XMLNode& node)
2173 const XMLProperty* prop;
2174 XMLNodeList nlist = node.children();
2175 XMLNodeIterator niter;
2176 boost::shared_ptr<AudioFileSource> fs;
2177 boost::shared_ptr<AudioFileSource> first_fs;
2178 SourceList pending_sources;
2179 framepos_t position;
2181 if ((prop = node.property (X_("at"))) == 0) {
2185 if (sscanf (prop->value().c_str(), "%" PRIu64, &position) != 1) {
2189 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
2190 if ((*niter)->name() == X_("file")) {
2192 if ((prop = (*niter)->property (X_("path"))) == 0) {
2196 // This protects sessions from errant CapturingSources in stored sessions
2198 if (stat (prop->value().c_str(), &sbuf)) {
2203 fs = boost::dynamic_pointer_cast<AudioFileSource> (
2204 SourceFactory::createWritable (DataType::AUDIO, _session,
2205 prop->value(), string(), false, _session.frame_rate()));
2208 catch (failed_constructor& err) {
2209 error << string_compose (_("%1: cannot restore pending capture source file %2"),
2210 _name, prop->value())
2215 pending_sources.push_back (fs);
2217 if (first_fs == 0) {
2221 fs->set_captured_for (_name.val());
2225 if (pending_sources.size() == 0) {
2226 /* nothing can be done */
2230 if (pending_sources.size() != _n_channels.n_audio()) {
2231 error << string_compose (_("%1: incorrect number of pending sources listed - ignoring them all"), _name)
2236 boost::shared_ptr<AudioRegion> region;
2242 plist.add (Properties::start, 0);
2243 plist.add (Properties::length, first_fs->length (first_fs->timeline_position()));
2244 plist.add (Properties::name, region_name_from_path (first_fs->name(), true));
2246 region = boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (pending_sources, plist));
2248 region->set_automatic (true);
2249 region->set_whole_file (true);
2250 region->special_set_position (0);
2253 catch (failed_constructor& err) {
2254 error << string_compose (
2255 _("%1: cannot create whole-file region from pending capture sources"),
2261 _playlist->add_region (region, position);
2267 AudioDiskstream::set_non_layered (bool yn)
2269 if (yn != non_layered()) {
2272 _flags = Flag (_flags | NonLayered);
2274 _flags = Flag (_flags & ~NonLayered);
2282 AudioDiskstream::set_destructive (bool yn)
2284 if (yn != destructive()) {
2287 bool bounce_ignored;
2288 /* requestor should already have checked this and
2289 bounced if necessary and desired
2291 if (!can_become_destructive (bounce_ignored)) {
2294 _flags = Flag (_flags | Destructive);
2295 use_destructive_playlist ();
2297 _flags = Flag (_flags & ~Destructive);
2298 reset_write_sources (true, true);
2306 AudioDiskstream::can_become_destructive (bool& requires_bounce) const
2309 requires_bounce = false;
2313 /* is there only one region ? */
2315 if (_playlist->n_regions() != 1) {
2316 requires_bounce = true;
2320 boost::shared_ptr<Region> first = _playlist->find_next_region (_session.current_start_frame(), Start, 1);
2322 requires_bounce = false;
2326 /* do the source(s) for the region cover the session start position ? */
2328 if (first->position() != _session.current_start_frame()) {
2329 if (first->start() > _session.current_start_frame()) {
2330 requires_bounce = true;
2335 /* is the source used by only 1 playlist ? */
2337 boost::shared_ptr<AudioRegion> afirst = boost::dynamic_pointer_cast<AudioRegion> (first);
2341 if (_session.playlists->source_use_count (afirst->source()) > 1) {
2342 requires_bounce = true;
2346 requires_bounce = false;
2351 AudioDiskstream::adjust_playback_buffering ()
2353 boost::shared_ptr<ChannelList> c = channels.reader();
2355 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2356 (*chan)->resize_playback (_session.butler()->audio_diskstream_playback_buffer_size());
2361 AudioDiskstream::adjust_capture_buffering ()
2363 boost::shared_ptr<ChannelList> c = channels.reader();
2365 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2366 (*chan)->resize_capture (_session.butler()->audio_diskstream_capture_buffer_size());
2370 AudioDiskstream::ChannelInfo::ChannelInfo (framecnt_t playback_bufsize, framecnt_t capture_bufsize, framecnt_t speed_size, framecnt_t wrap_size)
2374 current_capture_buffer = 0;
2375 current_playback_buffer = 0;
2376 curr_capture_cnt = 0;
2378 speed_buffer = new Sample[speed_size];
2379 playback_wrap_buffer = new Sample[wrap_size];
2380 capture_wrap_buffer = new Sample[wrap_size];
2382 playback_buf = new RingBufferNPT<Sample> (playback_bufsize);
2383 capture_buf = new RingBufferNPT<Sample> (capture_bufsize);
2384 capture_transition_buf = new RingBufferNPT<CaptureTransition> (256);
2386 /* touch the ringbuffer buffers, which will cause
2387 them to be mapped into locked physical RAM if
2388 we're running with mlockall(). this doesn't do
2392 memset (playback_buf->buffer(), 0, sizeof (Sample) * playback_buf->bufsize());
2393 memset (capture_buf->buffer(), 0, sizeof (Sample) * capture_buf->bufsize());
2394 memset (capture_transition_buf->buffer(), 0, sizeof (CaptureTransition) * capture_transition_buf->bufsize());
2398 AudioDiskstream::ChannelInfo::resize_playback (framecnt_t playback_bufsize)
2400 delete playback_buf;
2401 playback_buf = new RingBufferNPT<Sample> (playback_bufsize);
2402 memset (playback_buf->buffer(), 0, sizeof (Sample) * playback_buf->bufsize());
2406 AudioDiskstream::ChannelInfo::resize_capture (framecnt_t capture_bufsize)
2410 capture_buf = new RingBufferNPT<Sample> (capture_bufsize);
2411 memset (capture_buf->buffer(), 0, sizeof (Sample) * capture_buf->bufsize());
2414 AudioDiskstream::ChannelInfo::~ChannelInfo ()
2416 write_source.reset ();
2418 delete [] speed_buffer;
2421 delete [] playback_wrap_buffer;
2422 playback_wrap_buffer = 0;
2424 delete [] capture_wrap_buffer;
2425 capture_wrap_buffer = 0;
2427 delete playback_buf;
2433 delete capture_transition_buf;
2434 capture_transition_buf = 0;