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 s->update_header (capture_info.front()->start, when, twhen);
1429 s->set_captured_for (_name.val());
1430 s->mark_immutable ();
1432 if (Config->get_auto_analyse_audio()) {
1433 Analyser::queue_source_for_analysis (s, true);
1438 /* destructive tracks have a single, never changing region */
1440 if (destructive()) {
1442 /* send a signal that any UI can pick up to do the right thing. there is
1443 a small problem here in that a UI may need the peak data to be ready
1444 for the data that was recorded and this isn't interlocked with that
1445 process. this problem is deferred to the UI.
1448 _playlist->LayeringChanged(); // XXX this may not get the UI to do the right thing
1452 string whole_file_region_name;
1453 whole_file_region_name = region_name_from_path (c->front()->write_source->name(), true);
1455 /* Register a new region with the Session that
1456 describes the entire source. Do this first
1457 so that any sub-regions will obviously be
1458 children of this one (later!)
1464 plist.add (Properties::start, c->front()->write_source->last_capture_start_frame());
1465 plist.add (Properties::length, total_capture);
1466 plist.add (Properties::name, whole_file_region_name);
1467 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1468 rx->set_automatic (true);
1469 rx->set_whole_file (true);
1471 region = boost::dynamic_pointer_cast<AudioRegion> (rx);
1472 region->special_set_position (capture_info.front()->start);
1476 catch (failed_constructor& err) {
1477 error << string_compose(_("%1: could not create region for complete audio file"), _name) << endmsg;
1481 _last_capture_sources.insert (_last_capture_sources.end(), srcs.begin(), srcs.end());
1483 // cerr << _name << ": there are " << capture_info.size() << " capture_info records\n";
1485 _playlist->clear_changes ();
1486 _playlist->freeze ();
1488 for (buffer_position = c->front()->write_source->last_capture_start_frame(), ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1492 RegionFactory::region_name (region_name, whole_file_region_name, false);
1494 // cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add region " << region_name << endl;
1500 plist.add (Properties::start, buffer_position);
1501 plist.add (Properties::length, (*ci)->frames);
1502 plist.add (Properties::name, region_name);
1504 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1505 region = boost::dynamic_pointer_cast<AudioRegion> (rx);
1508 catch (failed_constructor& err) {
1509 error << _("AudioDiskstream: could not create region for captured audio!") << endmsg;
1510 continue; /* XXX is this OK? */
1513 i_am_the_modifier++;
1515 if (_playlist->explicit_relayering()) {
1516 /* We are in `explicit relayering' mode, so we must specify which layer this new region
1517 should end up on. Put it at the top.
1519 region->set_layer (_playlist->top_layer() + 1);
1520 region->set_pending_explicit_relayer (true);
1523 _playlist->add_region (region, (*ci)->start, 1, non_layered());
1524 i_am_the_modifier--;
1526 buffer_position += (*ci)->frames;
1530 _session.add_command (new StatefulDiffCommand (_playlist));
1533 mark_write_completed = true;
1536 reset_write_sources (mark_write_completed);
1540 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1544 capture_info.clear ();
1545 capture_start_frame = 0;
1549 AudioDiskstream::transport_looped (framepos_t transport_frame)
1551 if (was_recording) {
1552 // all we need to do is finish this capture, with modified capture length
1553 boost::shared_ptr<ChannelList> c = channels.reader();
1555 // adjust the capture length knowing that the data will be recorded to disk
1556 // only necessary after the first loop where we're recording
1557 if (capture_info.size() == 0) {
1558 capture_captured += _capture_offset;
1560 if (_alignment_style == ExistingMaterial) {
1561 capture_captured += _session.worst_output_latency();
1563 capture_captured += _roll_delay;
1567 finish_capture (true, c);
1569 // the next region will start recording via the normal mechanism
1570 // we'll set the start position to the current transport pos
1571 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1572 capture_start_frame = transport_frame;
1573 first_recordable_frame = transport_frame; // mild lie
1574 last_recordable_frame = max_framepos;
1575 was_recording = true;
1577 if (recordable() && destructive()) {
1578 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1580 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1581 (*chan)->capture_transition_buf->get_write_vector(&transvec);
1583 if (transvec.len[0] > 0) {
1584 transvec.buf[0]->type = CaptureStart;
1585 transvec.buf[0]->capture_val = capture_start_frame;
1586 (*chan)->capture_transition_buf->increment_write_ptr(1);
1590 fatal << X_("programming error: capture_transition_buf is full on rec loop! inconceivable!")
1600 AudioDiskstream::finish_capture (bool /*rec_monitors_input*/, boost::shared_ptr<ChannelList> c)
1602 was_recording = false;
1603 first_recordable_frame = max_framepos;
1604 last_recordable_frame = max_framepos;
1606 if (capture_captured == 0) {
1610 if (recordable() && destructive()) {
1611 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1613 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1614 (*chan)->capture_transition_buf->get_write_vector(&transvec);
1616 if (transvec.len[0] > 0) {
1617 transvec.buf[0]->type = CaptureEnd;
1618 transvec.buf[0]->capture_val = capture_captured;
1619 (*chan)->capture_transition_buf->increment_write_ptr(1);
1623 fatal << string_compose (_("programmer error: %1"), X_("capture_transition_buf is full when stopping record! inconceivable!")) << endmsg;
1629 CaptureInfo* ci = new CaptureInfo;
1631 ci->start = capture_start_frame;
1632 ci->frames = capture_captured;
1634 /* XXX theoretical race condition here. Need atomic exchange ?
1635 However, the circumstances when this is called right
1636 now (either on record-disable or transport_stopped)
1637 mean that no actual race exists. I think ...
1638 We now have a capture_info_lock, but it is only to be used
1639 to synchronize in the transport_stop and the capture info
1640 accessors, so that invalidation will not occur (both non-realtime).
1643 // cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
1645 capture_info.push_back (ci);
1646 capture_captured = 0;
1648 /* now we've finished a capture, reset first_recordable_frame for next time */
1649 first_recordable_frame = max_framepos;
1653 AudioDiskstream::set_record_enabled (bool yn)
1655 if (!recordable() || !_session.record_enabling_legal() || _io->n_ports().n_audio() == 0) {
1659 /* can't rec-enable in destructive mode if transport is before start */
1661 if (destructive() && yn && _session.transport_frame() < _session.current_start_frame()) {
1665 /* yes, i know that this not proof against race conditions, but its
1666 good enough. i think.
1669 if (record_enabled() != yn) {
1671 engage_record_enable ();
1673 disengage_record_enable ();
1679 AudioDiskstream::engage_record_enable ()
1681 bool rolling = _session.transport_speed() != 0.0f;
1682 boost::shared_ptr<ChannelList> c = channels.reader();
1684 g_atomic_int_set (&_record_enabled, 1);
1685 capturing_sources.clear ();
1687 if (Config->get_monitoring_model() == HardwareMonitoring) {
1689 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1690 if ((*chan)->source) {
1691 (*chan)->source->ensure_monitor_input (!(_session.config.get_auto_input() && rolling));
1693 capturing_sources.push_back ((*chan)->write_source);
1694 (*chan)->write_source->mark_streaming_write_started ();
1698 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1699 capturing_sources.push_back ((*chan)->write_source);
1700 (*chan)->write_source->mark_streaming_write_started ();
1704 RecordEnableChanged (); /* EMIT SIGNAL */
1708 AudioDiskstream::disengage_record_enable ()
1710 g_atomic_int_set (&_record_enabled, 0);
1711 boost::shared_ptr<ChannelList> c = channels.reader();
1712 if (Config->get_monitoring_model() == HardwareMonitoring) {
1713 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1714 if ((*chan)->source) {
1715 (*chan)->source->ensure_monitor_input (false);
1719 capturing_sources.clear ();
1720 RecordEnableChanged (); /* EMIT SIGNAL */
1724 AudioDiskstream::get_state ()
1726 XMLNode* node = new XMLNode ("Diskstream");
1728 LocaleGuard lg (X_("POSIX"));
1729 boost::shared_ptr<ChannelList> c = channels.reader();
1731 node->add_property ("flags", enum_2_string (_flags));
1733 snprintf (buf, sizeof(buf), "%zd", c->size());
1734 node->add_property ("channels", buf);
1736 node->add_property ("playlist", _playlist->name());
1738 snprintf (buf, sizeof(buf), "%.12g", _visible_speed);
1739 node->add_property ("speed", buf);
1741 node->add_property("name", _name);
1742 id().print (buf, sizeof (buf));
1743 node->add_property("id", buf);
1745 if (!capturing_sources.empty() && _session.get_record_enabled()) {
1747 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1748 XMLNode* cs_grandchild;
1750 for (vector<boost::shared_ptr<AudioFileSource> >::iterator i = capturing_sources.begin(); i != capturing_sources.end(); ++i) {
1751 cs_grandchild = new XMLNode (X_("file"));
1752 cs_grandchild->add_property (X_("path"), (*i)->path());
1753 cs_child->add_child_nocopy (*cs_grandchild);
1756 /* store the location where capture will start */
1760 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1761 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1763 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1766 cs_child->add_property (X_("at"), buf);
1767 node->add_child_nocopy (*cs_child);
1771 node->add_child_copy (*_extra_xml);
1778 AudioDiskstream::set_state (const XMLNode& node, int /*version*/)
1780 const XMLProperty* prop;
1781 XMLNodeList nlist = node.children();
1782 XMLNodeIterator niter;
1783 uint32_t nchans = 1;
1784 XMLNode* capture_pending_node = 0;
1785 LocaleGuard lg (X_("POSIX"));
1787 in_set_state = true;
1789 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1790 if ((*niter)->name() == IO::state_node_name) {
1791 deprecated_io_node = new XMLNode (**niter);
1794 if ((*niter)->name() == X_("CapturingSources")) {
1795 capture_pending_node = *niter;
1799 /* prevent write sources from being created */
1801 in_set_state = true;
1803 if ((prop = node.property ("name")) != 0) {
1804 _name = prop->value();
1807 if (deprecated_io_node) {
1808 if ((prop = deprecated_io_node->property ("id")) != 0) {
1809 _id = prop->value ();
1812 if ((prop = node.property ("id")) != 0) {
1813 _id = prop->value ();
1817 if ((prop = node.property ("flags")) != 0) {
1818 _flags = Flag (string_2_enum (prop->value(), _flags));
1821 if ((prop = node.property ("channels")) != 0) {
1822 nchans = atoi (prop->value().c_str());
1825 // create necessary extra channels
1826 // we are always constructed with one and we always need one
1828 _n_channels.set(DataType::AUDIO, channels.reader()->size());
1830 if (nchans > _n_channels.n_audio()) {
1832 add_channel (nchans - _n_channels.n_audio());
1833 IO::PortCountChanged(_n_channels);
1835 } else if (nchans < _n_channels.n_audio()) {
1837 remove_channel (_n_channels.n_audio() - nchans);
1840 if ((prop = node.property ("playlist")) == 0) {
1845 bool had_playlist = (_playlist != 0);
1847 if (find_and_use_playlist (prop->value())) {
1851 if (!had_playlist) {
1852 _playlist->set_orig_diskstream_id (id());
1855 if (!destructive() && capture_pending_node) {
1856 /* destructive streams have one and only one source per channel,
1857 and so they never end up in pending capture in any useful
1860 use_pending_capture_data (*capture_pending_node);
1865 if ((prop = node.property ("speed")) != 0) {
1866 double sp = atof (prop->value().c_str());
1868 if (realtime_set_speed (sp, false)) {
1869 non_realtime_set_speed ();
1873 in_set_state = false;
1875 /* make sure this is clear before we do anything else */
1877 capturing_sources.clear ();
1879 /* write sources are handled when we handle the input set
1880 up of the IO that owns this DS (::non_realtime_input_change())
1887 AudioDiskstream::use_new_write_source (uint32_t n)
1889 boost::shared_ptr<ChannelList> c = channels.reader();
1891 if (!recordable()) {
1895 if (n >= c->size()) {
1896 error << string_compose (_("AudioDiskstream: channel %1 out of range"), n) << endmsg;
1900 ChannelInfo* chan = (*c)[n];
1903 if ((chan->write_source = _session.create_audio_source_for_session (n_channels().n_audio(),
1904 name(), n, destructive())) == 0) {
1905 throw failed_constructor();
1909 catch (failed_constructor &err) {
1910 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
1911 chan->write_source.reset ();
1915 /* do not remove destructive files even if they are empty */
1917 chan->write_source->set_allow_remove_if_empty (!destructive());
1922 list<boost::shared_ptr<Source> >
1923 AudioDiskstream::steal_write_sources()
1925 /* not possible to steal audio write sources */
1926 list<boost::shared_ptr<Source> > ret;
1931 AudioDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
1933 ChannelList::iterator chan;
1934 boost::shared_ptr<ChannelList> c = channels.reader();
1937 if (!_session.writable() || !recordable()) {
1941 capturing_sources.clear ();
1943 for (chan = c->begin(), n = 0; chan != c->end(); ++chan, ++n) {
1945 if (!destructive()) {
1947 if ((*chan)->write_source) {
1949 if (mark_write_complete) {
1950 (*chan)->write_source->mark_streaming_write_completed ();
1951 (*chan)->write_source->done_with_peakfile_writes ();
1954 if ((*chan)->write_source->removable()) {
1955 (*chan)->write_source->mark_for_remove ();
1956 (*chan)->write_source->drop_references ();
1959 (*chan)->write_source.reset ();
1962 use_new_write_source (n);
1964 if (record_enabled()) {
1965 capturing_sources.push_back ((*chan)->write_source);
1970 if ((*chan)->write_source == 0) {
1971 use_new_write_source (n);
1976 if (destructive() && !c->empty ()) {
1978 /* we now have all our write sources set up, so create the
1979 playlist's single region.
1982 if (_playlist->empty()) {
1983 setup_destructive_playlist ();
1989 AudioDiskstream::rename_write_sources ()
1991 ChannelList::iterator chan;
1992 boost::shared_ptr<ChannelList> c = channels.reader();
1995 for (chan = c->begin(), n = 0; chan != c->end(); ++chan, ++n) {
1996 if ((*chan)->write_source != 0) {
1997 (*chan)->write_source->set_source_name (_name.val(), destructive());
1998 /* XXX what to do if one of them fails ? */
2006 AudioDiskstream::set_block_size (pframes_t /*nframes*/)
2008 if (_session.get_block_size() > speed_buffer_size) {
2009 speed_buffer_size = _session.get_block_size();
2010 boost::shared_ptr<ChannelList> c = channels.reader();
2012 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2013 if ((*chan)->speed_buffer)
2014 delete [] (*chan)->speed_buffer;
2015 (*chan)->speed_buffer = new Sample[speed_buffer_size];
2018 allocate_temporary_buffers ();
2022 AudioDiskstream::allocate_temporary_buffers ()
2024 /* make sure the wrap buffer is at least large enough to deal
2025 with the speeds up to 1.2, to allow for micro-variation
2026 when slaving to MTC, Timecode etc.
2029 double const sp = max (fabsf (_actual_speed), 1.2f);
2030 framecnt_t required_wrap_size = (framecnt_t) floor (_session.get_block_size() * sp) + 1;
2032 if (required_wrap_size > wrap_buffer_size) {
2034 boost::shared_ptr<ChannelList> c = channels.reader();
2036 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2037 if ((*chan)->playback_wrap_buffer)
2038 delete [] (*chan)->playback_wrap_buffer;
2039 (*chan)->playback_wrap_buffer = new Sample[required_wrap_size];
2040 if ((*chan)->capture_wrap_buffer)
2041 delete [] (*chan)->capture_wrap_buffer;
2042 (*chan)->capture_wrap_buffer = new Sample[required_wrap_size];
2045 wrap_buffer_size = required_wrap_size;
2050 AudioDiskstream::monitor_input (bool yn)
2052 boost::shared_ptr<ChannelList> c = channels.reader();
2054 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2056 if ((*chan)->source) {
2057 (*chan)->source->ensure_monitor_input (yn);
2063 AudioDiskstream::set_align_style_from_io ()
2065 bool have_physical = false;
2071 get_input_sources ();
2073 boost::shared_ptr<ChannelList> c = channels.reader();
2075 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2076 if ((*chan)->source && (*chan)->source->flags() & JackPortIsPhysical) {
2077 have_physical = true;
2082 if (have_physical) {
2083 set_align_style (ExistingMaterial);
2085 set_align_style (CaptureTime);
2090 AudioDiskstream::add_channel_to (boost::shared_ptr<ChannelList> c, uint32_t how_many)
2092 while (how_many--) {
2093 c->push_back (new ChannelInfo(_session.butler()->audio_diskstream_playback_buffer_size(),
2094 _session.butler()->audio_diskstream_capture_buffer_size(),
2095 speed_buffer_size, wrap_buffer_size));
2096 interpolation.add_channel_to (_session.butler()->audio_diskstream_playback_buffer_size(), speed_buffer_size);
2099 _n_channels.set(DataType::AUDIO, c->size());
2105 AudioDiskstream::add_channel (uint32_t how_many)
2107 RCUWriter<ChannelList> writer (channels);
2108 boost::shared_ptr<ChannelList> c = writer.get_copy();
2110 return add_channel_to (c, how_many);
2114 AudioDiskstream::remove_channel_from (boost::shared_ptr<ChannelList> c, uint32_t how_many)
2116 while (how_many-- && !c->empty()) {
2119 interpolation.remove_channel_from ();
2122 _n_channels.set(DataType::AUDIO, c->size());
2128 AudioDiskstream::remove_channel (uint32_t how_many)
2130 RCUWriter<ChannelList> writer (channels);
2131 boost::shared_ptr<ChannelList> c = writer.get_copy();
2133 return remove_channel_from (c, how_many);
2137 AudioDiskstream::playback_buffer_load () const
2139 boost::shared_ptr<ChannelList> c = channels.reader();
2145 return (float) ((double) c->front()->playback_buf->read_space()/
2146 (double) c->front()->playback_buf->bufsize());
2150 AudioDiskstream::capture_buffer_load () const
2152 boost::shared_ptr<ChannelList> c = channels.reader();
2158 return (float) ((double) c->front()->capture_buf->write_space()/
2159 (double) c->front()->capture_buf->bufsize());
2163 AudioDiskstream::use_pending_capture_data (XMLNode& node)
2165 const XMLProperty* prop;
2166 XMLNodeList nlist = node.children();
2167 XMLNodeIterator niter;
2168 boost::shared_ptr<AudioFileSource> fs;
2169 boost::shared_ptr<AudioFileSource> first_fs;
2170 SourceList pending_sources;
2171 framepos_t position;
2173 if ((prop = node.property (X_("at"))) == 0) {
2177 if (sscanf (prop->value().c_str(), "%" PRIu64, &position) != 1) {
2181 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
2182 if ((*niter)->name() == X_("file")) {
2184 if ((prop = (*niter)->property (X_("path"))) == 0) {
2188 // This protects sessions from errant CapturingSources in stored sessions
2190 if (stat (prop->value().c_str(), &sbuf)) {
2195 fs = boost::dynamic_pointer_cast<AudioFileSource> (
2196 SourceFactory::createWritable (DataType::AUDIO, _session,
2197 prop->value(), string(), false, _session.frame_rate()));
2200 catch (failed_constructor& err) {
2201 error << string_compose (_("%1: cannot restore pending capture source file %2"),
2202 _name, prop->value())
2207 pending_sources.push_back (fs);
2209 if (first_fs == 0) {
2213 fs->set_captured_for (_name.val());
2217 if (pending_sources.size() == 0) {
2218 /* nothing can be done */
2222 if (pending_sources.size() != _n_channels.n_audio()) {
2223 error << string_compose (_("%1: incorrect number of pending sources listed - ignoring them all"), _name)
2228 boost::shared_ptr<AudioRegion> region;
2234 plist.add (Properties::start, 0);
2235 plist.add (Properties::length, first_fs->length (first_fs->timeline_position()));
2236 plist.add (Properties::name, region_name_from_path (first_fs->name(), true));
2238 region = boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (pending_sources, plist));
2240 region->set_automatic (true);
2241 region->set_whole_file (true);
2242 region->special_set_position (0);
2245 catch (failed_constructor& err) {
2246 error << string_compose (
2247 _("%1: cannot create whole-file region from pending capture sources"),
2253 _playlist->add_region (region, position);
2259 AudioDiskstream::set_non_layered (bool yn)
2261 if (yn != non_layered()) {
2264 _flags = Flag (_flags | NonLayered);
2266 _flags = Flag (_flags & ~NonLayered);
2274 AudioDiskstream::set_destructive (bool yn)
2276 if (yn != destructive()) {
2279 bool bounce_ignored;
2280 /* requestor should already have checked this and
2281 bounced if necessary and desired
2283 if (!can_become_destructive (bounce_ignored)) {
2286 _flags = Flag (_flags | Destructive);
2287 use_destructive_playlist ();
2289 _flags = Flag (_flags & ~Destructive);
2290 reset_write_sources (true, true);
2298 AudioDiskstream::can_become_destructive (bool& requires_bounce) const
2301 requires_bounce = false;
2305 /* is there only one region ? */
2307 if (_playlist->n_regions() != 1) {
2308 requires_bounce = true;
2312 boost::shared_ptr<Region> first = _playlist->find_next_region (_session.current_start_frame(), Start, 1);
2314 requires_bounce = false;
2318 /* do the source(s) for the region cover the session start position ? */
2320 if (first->position() != _session.current_start_frame()) {
2321 if (first->start() > _session.current_start_frame()) {
2322 requires_bounce = true;
2327 /* is the source used by only 1 playlist ? */
2329 boost::shared_ptr<AudioRegion> afirst = boost::dynamic_pointer_cast<AudioRegion> (first);
2333 if (_session.playlists->source_use_count (afirst->source()) > 1) {
2334 requires_bounce = true;
2338 requires_bounce = false;
2343 AudioDiskstream::adjust_playback_buffering ()
2345 boost::shared_ptr<ChannelList> c = channels.reader();
2347 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2348 (*chan)->resize_playback (_session.butler()->audio_diskstream_playback_buffer_size());
2353 AudioDiskstream::adjust_capture_buffering ()
2355 boost::shared_ptr<ChannelList> c = channels.reader();
2357 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2358 (*chan)->resize_capture (_session.butler()->audio_diskstream_capture_buffer_size());
2362 AudioDiskstream::ChannelInfo::ChannelInfo (framecnt_t playback_bufsize, framecnt_t capture_bufsize, framecnt_t speed_size, framecnt_t wrap_size)
2366 current_capture_buffer = 0;
2367 current_playback_buffer = 0;
2368 curr_capture_cnt = 0;
2370 speed_buffer = new Sample[speed_size];
2371 playback_wrap_buffer = new Sample[wrap_size];
2372 capture_wrap_buffer = new Sample[wrap_size];
2374 playback_buf = new RingBufferNPT<Sample> (playback_bufsize);
2375 capture_buf = new RingBufferNPT<Sample> (capture_bufsize);
2376 capture_transition_buf = new RingBufferNPT<CaptureTransition> (256);
2378 /* touch the ringbuffer buffers, which will cause
2379 them to be mapped into locked physical RAM if
2380 we're running with mlockall(). this doesn't do
2384 memset (playback_buf->buffer(), 0, sizeof (Sample) * playback_buf->bufsize());
2385 memset (capture_buf->buffer(), 0, sizeof (Sample) * capture_buf->bufsize());
2386 memset (capture_transition_buf->buffer(), 0, sizeof (CaptureTransition) * capture_transition_buf->bufsize());
2390 AudioDiskstream::ChannelInfo::resize_playback (framecnt_t playback_bufsize)
2392 delete playback_buf;
2393 playback_buf = new RingBufferNPT<Sample> (playback_bufsize);
2394 memset (playback_buf->buffer(), 0, sizeof (Sample) * playback_buf->bufsize());
2398 AudioDiskstream::ChannelInfo::resize_capture (framecnt_t capture_bufsize)
2402 capture_buf = new RingBufferNPT<Sample> (capture_bufsize);
2403 memset (capture_buf->buffer(), 0, sizeof (Sample) * capture_buf->bufsize());
2406 AudioDiskstream::ChannelInfo::~ChannelInfo ()
2408 write_source.reset ();
2410 delete [] speed_buffer;
2413 delete [] playback_wrap_buffer;
2414 playback_wrap_buffer = 0;
2416 delete [] capture_wrap_buffer;
2417 capture_wrap_buffer = 0;
2419 delete playback_buf;
2425 delete capture_transition_buf;
2426 capture_transition_buf = 0;