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.
31 #include "pbd/error.h"
32 #include "pbd/xml++.h"
33 #include "pbd/memento_command.h"
34 #include "pbd/enumwriter.h"
35 #include "pbd/stateful_diff_command.h"
37 #include "ardour/analyser.h"
38 #include "ardour/audio_buffer.h"
39 #include "ardour/audio_diskstream.h"
40 #include "ardour/audio_port.h"
41 #include "ardour/audioengine.h"
42 #include "ardour/audiofilesource.h"
43 #include "ardour/audioplaylist.h"
44 #include "ardour/audioregion.h"
45 #include "ardour/butler.h"
46 #include "ardour/debug.h"
47 #include "ardour/io.h"
48 #include "ardour/playlist_factory.h"
49 #include "ardour/profile.h"
50 #include "ardour/region_factory.h"
51 #include "ardour/session.h"
52 #include "ardour/session_playlists.h"
53 #include "ardour/sndfile_helpers.h"
54 #include "ardour/source_factory.h"
55 #include "ardour/track.h"
56 #include "ardour/types.h"
57 #include "ardour/utils.h"
63 using namespace ARDOUR;
66 Sample* AudioDiskstream::_mixdown_buffer = 0;
67 gain_t* AudioDiskstream::_gain_buffer = 0;
69 AudioDiskstream::AudioDiskstream (Session &sess, const string &name, Diskstream::Flag flag)
70 : Diskstream(sess, name, flag)
71 , channels (new ChannelList)
73 /* prevent any write sources from being created */
79 if (flag & Destructive) {
80 use_destructive_playlist ();
84 AudioDiskstream::AudioDiskstream (Session& sess, const XMLNode& node)
85 : Diskstream(sess, node)
86 , channels (new ChannelList)
91 if (set_state (node, Stateful::loading_state_version)) {
93 throw failed_constructor();
99 use_destructive_playlist ();
104 AudioDiskstream::init ()
106 /* there are no channels at this point, so these
107 two calls just get speed_buffer_size and wrap_buffer
108 size setup without duplicating their code.
111 set_block_size (_session.get_block_size());
112 allocate_temporary_buffers ();
115 AudioDiskstream::~AudioDiskstream ()
117 DEBUG_TRACE (DEBUG::Destruction, string_compose ("Audio Diskstream %1 destructor\n", _name));
120 RCUWriter<ChannelList> writer (channels);
121 boost::shared_ptr<ChannelList> c = writer.get_copy();
123 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
134 AudioDiskstream::allocate_working_buffers()
136 /* with varifill buffer refilling, we compute the read size in bytes (to optimize
137 for disk i/o bandwidth) and then convert back into samples. These buffers
138 need to reflect the maximum size we could use, which is 4MB reads, or 2M samples
139 using 16 bit samples.
141 _mixdown_buffer = new Sample[2*1048576];
142 _gain_buffer = new gain_t[2*1048576];
146 AudioDiskstream::free_working_buffers()
148 delete [] _mixdown_buffer;
149 delete [] _gain_buffer;
155 AudioDiskstream::non_realtime_input_change ()
157 bool need_write_sources = false;
160 Glib::Threads::Mutex::Lock lm (state_lock);
162 if (input_change_pending.type == IOChange::NoChange) {
166 boost::shared_ptr<ChannelList> cr = channels.reader();
167 if (!cr->empty() && !cr->front()->write_source) {
168 need_write_sources = true;
171 if (input_change_pending.type == IOChange::ConfigurationChanged) {
172 RCUWriter<ChannelList> writer (channels);
173 boost::shared_ptr<ChannelList> c = writer.get_copy();
175 _n_channels.set(DataType::AUDIO, c->size());
177 if (_io->n_ports().n_audio() > _n_channels.n_audio()) {
178 add_channel_to (c, _io->n_ports().n_audio() - _n_channels.n_audio());
179 } else if (_io->n_ports().n_audio() < _n_channels.n_audio()) {
180 remove_channel_from (c, _n_channels.n_audio() - _io->n_ports().n_audio());
183 need_write_sources = true;
186 if (input_change_pending.type & IOChange::ConnectionsChanged) {
187 get_input_sources ();
188 set_capture_offset ();
189 set_align_style_from_io ();
192 input_change_pending = IOChange::NoChange;
194 /* implicit unlock */
197 if (need_write_sources) {
198 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()) && (_io->nth (n)->get_connections (connections) == 0)) {
237 if (!(*chan)->source.name.empty()) {
238 // _source->disable_metering ();
240 (*chan)->source.name = string();
242 (*chan)->source.name = connections[0];
248 AudioDiskstream::find_and_use_playlist (const string& name)
250 boost::shared_ptr<AudioPlaylist> playlist;
252 if ((playlist = boost::dynamic_pointer_cast<AudioPlaylist> (_session.playlists->by_name (name))) == 0) {
253 playlist = boost::dynamic_pointer_cast<AudioPlaylist> (PlaylistFactory::create (DataType::AUDIO, _session, name));
257 error << string_compose(_("AudioDiskstream: Playlist \"%1\" isn't an audio playlist"), name) << endmsg;
261 return use_playlist (playlist);
265 AudioDiskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
267 assert(boost::dynamic_pointer_cast<AudioPlaylist>(playlist));
269 Diskstream::use_playlist(playlist);
275 AudioDiskstream::use_new_playlist ()
278 boost::shared_ptr<AudioPlaylist> playlist;
280 if (!in_set_state && destructive()) {
285 newname = Playlist::bump_name (_playlist->name(), _session);
287 newname = Playlist::bump_name (_name, _session);
290 if ((playlist = boost::dynamic_pointer_cast<AudioPlaylist> (PlaylistFactory::create (DataType::AUDIO, _session, newname, hidden()))) != 0) {
292 return use_playlist (playlist);
300 AudioDiskstream::use_copy_playlist ()
302 assert(audio_playlist());
308 if (_playlist == 0) {
309 error << string_compose(_("AudioDiskstream %1: there is no existing playlist to make a copy of!"), _name) << endmsg;
314 boost::shared_ptr<AudioPlaylist> playlist;
316 newname = Playlist::bump_name (_playlist->name(), _session);
318 if ((playlist = boost::dynamic_pointer_cast<AudioPlaylist>(PlaylistFactory::create (audio_playlist(), newname))) != 0) {
319 return use_playlist (playlist);
326 AudioDiskstream::setup_destructive_playlist ()
329 boost::shared_ptr<ChannelList> c = channels.reader();
331 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
332 srcs.push_back ((*chan)->write_source);
335 /* a single full-sized region */
337 assert (!srcs.empty ());
340 plist.add (Properties::name, _name.val());
341 plist.add (Properties::start, 0);
342 plist.add (Properties::length, max_framepos - srcs.front()->natural_position());
344 boost::shared_ptr<Region> region (RegionFactory::create (srcs, plist));
345 _playlist->add_region (region, srcs.front()->natural_position());
347 /* apply region properties and update write sources */
348 use_destructive_playlist();
352 AudioDiskstream::use_destructive_playlist ()
354 /* this is called from the XML-based constructor or ::set_destructive. when called,
355 we already have a playlist and a region, but we need to
356 set up our sources for write. we use the sources associated
357 with the (presumed single, full-extent) region.
360 boost::shared_ptr<Region> rp;
362 const RegionList& rl (_playlist->region_list().rlist());
364 assert((rl.size() == 1));
370 reset_write_sources (false, true);
374 boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (rp);
377 throw failed_constructor();
380 /* be sure to stretch the region out to the maximum length */
382 region->set_length (max_framepos - region->position());
385 ChannelList::iterator chan;
386 boost::shared_ptr<ChannelList> c = channels.reader();
388 for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
389 (*chan)->write_source = boost::dynamic_pointer_cast<AudioFileSource>(region->source (n));
390 assert((*chan)->write_source);
391 (*chan)->write_source->set_allow_remove_if_empty (false);
393 /* this might be false if we switched modes, so force it */
395 (*chan)->write_source->set_destructive (true);
398 /* the source list will never be reset for a destructive track */
402 AudioDiskstream::prepare_record_status(framepos_t capture_start_frame)
404 if (recordable() && destructive()) {
405 boost::shared_ptr<ChannelList> c = channels.reader();
406 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
408 RingBufferNPT<CaptureTransition>::rw_vector transitions;
409 (*chan)->capture_transition_buf->get_write_vector (&transitions);
411 if (transitions.len[0] > 0) {
412 transitions.buf[0]->type = CaptureStart;
413 transitions.buf[0]->capture_val = capture_start_frame;
414 (*chan)->capture_transition_buf->increment_write_ptr(1);
417 fatal << X_("programming error: capture_transition_buf is full on rec start! inconceivable!")
425 /** Do some record stuff [not described in this comment!]
428 * - Setup playback_distance with the nframes, or nframes adjusted
429 * for current varispeed, if appropriate.
430 * - Setup current_playback_buffer in each ChannelInfo to point to data
431 * that someone can read playback_distance worth of data from.
434 AudioDiskstream::process (BufferSet& bufs, framepos_t transport_frame, pframes_t nframes, framecnt_t& playback_distance, bool need_disk_signal)
437 boost::shared_ptr<ChannelList> c = channels.reader();
438 ChannelList::iterator chan;
439 framecnt_t rec_offset = 0;
440 framecnt_t rec_nframes = 0;
441 bool collect_playback = false;
442 bool can_record = _session.actively_recording ();
444 playback_distance = 0;
446 if (!_io || !_io->active()) {
450 check_record_status (transport_frame, can_record);
456 Glib::Threads::Mutex::Lock sm (state_lock, Glib::Threads::TRY_LOCK);
462 adjust_capture_position = 0;
464 for (chan = c->begin(); chan != c->end(); ++chan) {
465 (*chan)->current_capture_buffer = 0;
466 (*chan)->current_playback_buffer = 0;
469 // Safeguard against situations where process() goes haywire when autopunching
470 // and last_recordable_frame < first_recordable_frame
472 if (last_recordable_frame < first_recordable_frame) {
473 last_recordable_frame = max_framepos;
476 if (record_enabled()) {
478 Evoral::OverlapType ot = Evoral::coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
479 // XXX should this be transport_frame + nframes - 1 ? coverage() expects its parameter ranges to include their end points
480 // XXX also, first_recordable_frame & last_recordable_frame may both be == max_framepos: coverage() will return OverlapNone in that case. Is thak OK?
481 calculate_record_range (ot, transport_frame, nframes, rec_nframes, rec_offset);
483 DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("%1: this time record %2 of %3 frames, offset %4\n", _name, rec_nframes, nframes, rec_offset));
485 if (rec_nframes && !was_recording) {
486 capture_captured = 0;
487 was_recording = true;
491 if (can_record && !_last_capture_sources.empty()) {
492 _last_capture_sources.clear ();
497 uint32_t limit = _io->n_ports ().n_audio();
499 /* one or more ports could already have been removed from _io, but our
500 channel setup hasn't yet been updated. prevent us from trying to
501 use channels that correspond to missing ports. note that the
502 process callback (from which this is called) is always atomic
503 with respect to port removal/addition.
506 for (n = 0, chan = c->begin(); chan != c->end() && n < limit; ++chan, ++n) {
508 ChannelInfo* chaninfo (*chan);
510 chaninfo->capture_buf->get_write_vector (&chaninfo->capture_vector);
512 if (rec_nframes <= (framecnt_t) chaninfo->capture_vector.len[0]) {
514 chaninfo->current_capture_buffer = chaninfo->capture_vector.buf[0];
516 /* note: grab the entire port buffer, but only copy what we were supposed to
517 for recording, and use rec_offset
520 boost::shared_ptr<AudioPort> const ap = _io->audio (n);
522 assert(rec_nframes <= (framecnt_t) ap->get_audio_buffer(nframes).capacity());
524 Sample *buf = bufs.get_audio (n).data(rec_offset);
525 memcpy (chaninfo->current_capture_buffer, buf, sizeof (Sample) * rec_nframes);
529 framecnt_t total = chaninfo->capture_vector.len[0] + chaninfo->capture_vector.len[1];
531 if (rec_nframes > total) {
532 DEBUG_TRACE (DEBUG::Butler, string_compose ("%1 overrun in %2, rec_nframes = %3 total space = %4\n",
533 DEBUG_THREAD_SELF, name(), rec_nframes, total));
538 boost::shared_ptr<AudioPort> const ap = _io->audio (n);
541 Sample *buf = bufs.get_audio (n).data(rec_offset);
542 framecnt_t first = chaninfo->capture_vector.len[0];
544 memcpy (chaninfo->capture_wrap_buffer, buf, sizeof (Sample) * first);
545 memcpy (chaninfo->capture_vector.buf[0], buf, sizeof (Sample) * first);
546 memcpy (chaninfo->capture_wrap_buffer+first, buf + first, sizeof (Sample) * (rec_nframes - first));
547 memcpy (chaninfo->capture_vector.buf[1], buf + first, sizeof (Sample) * (rec_nframes - first));
549 chaninfo->current_capture_buffer = chaninfo->capture_wrap_buffer;
563 /* data will be written to disk */
565 if (rec_nframes == nframes && rec_offset == 0) {
567 for (chan = c->begin(); chan != c->end(); ++chan) {
568 (*chan)->current_playback_buffer = (*chan)->current_capture_buffer;
571 playback_distance = nframes;
576 /* we can't use the capture buffer as the playback buffer, because
577 we recorded only a part of the current process' cycle data
581 collect_playback = true;
584 adjust_capture_position = rec_nframes;
586 } else if (can_record && record_enabled()) {
588 /* can't do actual capture yet - waiting for latency effects to finish before we start*/
590 for (chan = c->begin(); chan != c->end(); ++chan) {
591 (*chan)->current_playback_buffer = (*chan)->current_capture_buffer;
594 playback_distance = nframes;
598 collect_playback = true;
601 if ((_track->monitoring_state () & MonitoringDisk) || collect_playback) {
603 /* we're doing playback */
605 framecnt_t necessary_samples;
607 /* no varispeed playback if we're recording, because the output .... TBD */
609 if (rec_nframes == 0 && _actual_speed != 1.0f) {
610 necessary_samples = (framecnt_t) ceil ((nframes * fabs (_actual_speed))) + 2;
612 necessary_samples = nframes;
615 for (chan = c->begin(); chan != c->end(); ++chan) {
616 (*chan)->playback_buf->get_read_vector (&(*chan)->playback_vector);
621 /* Setup current_playback_buffer in each ChannelInfo to point to data that someone
622 can read necessary_samples (== nframes at a transport speed of 1) worth of data
626 for (chan = c->begin(); chan != c->end(); ++chan, ++n) {
628 ChannelInfo* chaninfo (*chan);
630 if (necessary_samples <= (framecnt_t) chaninfo->playback_vector.len[0]) {
631 /* There are enough samples in the first part of the ringbuffer */
632 chaninfo->current_playback_buffer = chaninfo->playback_vector.buf[0];
635 framecnt_t total = chaninfo->playback_vector.len[0] + chaninfo->playback_vector.len[1];
637 if (necessary_samples > total) {
638 cerr << _name << " Need " << necessary_samples << " total = " << total << endl;
639 cerr << "underrun for " << _name << endl;
640 DEBUG_TRACE (DEBUG::Butler, string_compose ("%1 underrun in %2, rec_nframes = %3 total space = %4\n",
641 DEBUG_THREAD_SELF, name(), rec_nframes, total));
647 /* We have enough samples, but not in one lump. Coalesce the two parts
648 into one in playback_wrap_buffer in our ChannelInfo, and specify that
649 as our current_playback_buffer.
652 assert(wrap_buffer_size >= necessary_samples);
654 /* Copy buf[0] from playback_buf */
655 memcpy ((char *) chaninfo->playback_wrap_buffer,
656 chaninfo->playback_vector.buf[0],
657 chaninfo->playback_vector.len[0] * sizeof (Sample));
659 /* Copy buf[1] from playback_buf */
660 memcpy (chaninfo->playback_wrap_buffer + chaninfo->playback_vector.len[0],
661 chaninfo->playback_vector.buf[1],
662 (necessary_samples - chaninfo->playback_vector.len[0])
665 chaninfo->current_playback_buffer = chaninfo->playback_wrap_buffer;
670 if (rec_nframes == 0 && _actual_speed != 1.0f && _actual_speed != -1.0f) {
672 interpolation.set_speed (_target_speed);
675 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan, ++channel) {
676 ChannelInfo* chaninfo (*chan);
678 playback_distance = interpolation.interpolate (
679 channel, nframes, chaninfo->current_playback_buffer, chaninfo->speed_buffer);
681 chaninfo->current_playback_buffer = chaninfo->speed_buffer;
685 playback_distance = nframes;
688 _speed = _target_speed;
691 if (need_disk_signal) {
693 /* copy data over to buffer set */
695 size_t n_buffers = bufs.count().n_audio();
696 size_t n_chans = c->size();
697 gain_t scaling = 1.0f;
699 if (n_chans > n_buffers) {
700 scaling = ((float) n_buffers)/n_chans;
703 for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
705 AudioBuffer& buf (bufs.get_audio (n%n_buffers));
706 ChannelInfo* chaninfo (*chan);
709 if (scaling != 1.0f) {
710 buf.read_from_with_gain (chaninfo->current_playback_buffer, nframes, scaling);
712 buf.read_from (chaninfo->current_playback_buffer, nframes);
715 if (scaling != 1.0f) {
716 buf.accumulate_with_gain_from (chaninfo->current_playback_buffer, nframes, scaling);
718 buf.accumulate_from (chaninfo->current_playback_buffer, nframes);
723 /* leave the MIDI count alone */
724 ChanCount cnt (DataType::AUDIO, n_chans);
725 cnt.set (DataType::MIDI, bufs.count().n_midi());
726 bufs.set_count (cnt);
728 /* extra buffers will already be silent, so leave them alone */
735 AudioDiskstream::calculate_playback_distance (pframes_t nframes)
737 frameoffset_t playback_distance = nframes;
739 if (record_enabled()) {
740 playback_distance = nframes;
741 } else if (_actual_speed != 1.0f && _actual_speed != -1.0f) {
742 interpolation.set_speed (_target_speed);
743 boost::shared_ptr<ChannelList> c = channels.reader();
745 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan, ++channel) {
746 playback_distance = interpolation.interpolate (channel, nframes, NULL, NULL);
749 playback_distance = nframes;
752 if (_actual_speed < 0.0) {
753 return -playback_distance;
755 return playback_distance;
759 /** Update various things including playback_sample, read pointer on each channel's playback_buf
760 * and write pointer on each channel's capture_buf. Also wout whether the butler is needed.
761 * @return true if the butler is required.
764 AudioDiskstream::commit (framecnt_t playback_distance)
766 bool need_butler = false;
768 if (!_io || !_io->active()) {
772 if (_actual_speed < 0.0) {
773 playback_sample -= playback_distance;
775 playback_sample += playback_distance;
778 boost::shared_ptr<ChannelList> c = channels.reader();
779 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
781 (*chan)->playback_buf->increment_read_ptr (playback_distance);
783 if (adjust_capture_position) {
784 (*chan)->capture_buf->increment_write_ptr (adjust_capture_position);
788 if (adjust_capture_position != 0) {
789 capture_captured += adjust_capture_position;
790 adjust_capture_position = 0;
798 if (_io && _io->active()) {
799 need_butler = c->front()->playback_buf->write_space() >= c->front()->playback_buf->bufsize() / 2;
804 if (_io && _io->active()) {
805 need_butler = ((framecnt_t) c->front()->playback_buf->write_space() >= disk_read_chunk_frames)
806 || ((framecnt_t) c->front()->capture_buf->read_space() >= disk_write_chunk_frames);
808 need_butler = ((framecnt_t) c->front()->capture_buf->read_space() >= disk_write_chunk_frames);
816 AudioDiskstream::set_pending_overwrite (bool yn)
818 /* called from audio thread, so we can use the read ptr and playback sample as we wish */
820 _pending_overwrite = yn;
822 overwrite_frame = playback_sample;
824 boost::shared_ptr<ChannelList> c = channels.reader ();
826 overwrite_offset = c->front()->playback_buf->get_read_ptr();
831 AudioDiskstream::overwrite_existing_buffers ()
833 boost::shared_ptr<ChannelList> c = channels.reader();
835 _pending_overwrite = false;
839 Sample* mixdown_buffer;
842 bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
844 overwrite_queued = false;
846 /* assume all are the same size */
847 framecnt_t size = c->front()->playback_buf->bufsize();
849 mixdown_buffer = new Sample[size];
850 gain_buffer = new float[size];
852 /* reduce size so that we can fill the buffer correctly (ringbuffers
853 can only handle size-1, otherwise they appear to be empty)
860 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan, ++n) {
862 start = overwrite_frame;
863 framecnt_t cnt = size;
865 /* to fill the buffer without resetting the playback sample, we need to
866 do it one or two chunks (normally two).
868 |----------------------------------------------------------------------|
872 |<- second chunk->||<----------------- first chunk ------------------>|
876 framecnt_t to_read = size - overwrite_offset;
878 if (read ((*chan)->playback_buf->buffer() + overwrite_offset, mixdown_buffer, gain_buffer, start, to_read, n, reversed)) {
879 error << string_compose(_("AudioDiskstream %1: when refilling, cannot read %2 from playlist at frame %3"),
880 id(), size, playback_sample) << endmsg;
888 if (read ((*chan)->playback_buf->buffer(), mixdown_buffer, gain_buffer, start, cnt, n, reversed)) {
889 error << string_compose(_("AudioDiskstream %1: when refilling, cannot read %2 from playlist at frame %3"),
890 id(), size, playback_sample) << endmsg;
899 _pending_overwrite = false;
900 delete [] gain_buffer;
901 delete [] mixdown_buffer;
906 AudioDiskstream::seek (framepos_t frame, bool complete_refill)
910 ChannelList::iterator chan;
911 boost::shared_ptr<ChannelList> c = channels.reader();
913 Glib::Threads::Mutex::Lock lm (state_lock);
915 for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
916 (*chan)->playback_buf->reset ();
917 (*chan)->capture_buf->reset ();
920 /* can't rec-enable in destructive mode if transport is before start */
922 if (destructive() && record_enabled() && frame < _session.current_start_frame()) {
923 disengage_record_enable ();
926 playback_sample = frame;
929 if (complete_refill) {
930 /* call _do_refill() to refill the entire buffer, using
931 the largest reads possible.
933 while ((ret = do_refill_with_alloc (false)) > 0) ;
935 /* call _do_refill() to refill just one chunk, and then
938 ret = do_refill_with_alloc (true);
945 AudioDiskstream::can_internal_playback_seek (framecnt_t distance)
947 ChannelList::iterator chan;
948 boost::shared_ptr<ChannelList> c = channels.reader();
950 for (chan = c->begin(); chan != c->end(); ++chan) {
951 if ((*chan)->playback_buf->read_space() < (size_t) distance) {
959 AudioDiskstream::internal_playback_seek (framecnt_t distance)
961 ChannelList::iterator chan;
962 boost::shared_ptr<ChannelList> c = channels.reader();
964 for (chan = c->begin(); chan != c->end(); ++chan) {
965 (*chan)->playback_buf->increment_read_ptr (llabs(distance));
968 if (first_recordable_frame < max_framepos) {
969 first_recordable_frame += distance;
971 playback_sample += distance;
976 /** Read some data for 1 channel from our playlist into a buffer.
977 * @param buf Buffer to write to.
978 * @param start Session frame to start reading from; updated to where we end up
980 * @param cnt Count of samples to read.
981 * @param reversed true if we are running backwards, otherwise false.
984 AudioDiskstream::read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer,
985 framepos_t& start, framecnt_t cnt,
986 int channel, bool reversed)
988 framecnt_t this_read = 0;
990 framepos_t loop_end = 0;
991 framepos_t loop_start = 0;
992 framecnt_t offset = 0;
995 /* XXX we don't currently play loops in reverse. not sure why */
999 framecnt_t loop_length = 0;
1001 /* Make the use of a Location atomic for this read operation.
1003 Note: Locations don't get deleted, so all we care about
1004 when I say "atomic" is that we are always pointing to
1005 the same one and using a start/length values obtained
1009 if ((loc = loop_location) != 0) {
1010 loop_start = loc->start();
1011 loop_end = loc->end();
1012 loop_length = loop_end - loop_start;
1015 /* if we are looping, ensure that the first frame we read is at the correct
1016 position within the loop.
1019 if (loc && start >= loop_end) {
1020 start = loop_start + ((start - loop_start) % loop_length);
1029 /* We need this while loop in case we hit a loop boundary, in which case our read from
1030 the playlist must be split into more than one section.
1035 /* take any loop into account. we can't read past the end of the loop. */
1037 if (loc && (loop_end - start < cnt)) {
1038 this_read = loop_end - start;
1045 if (this_read == 0) {
1049 this_read = min(cnt,this_read);
1051 if (audio_playlist()->read (buf+offset, mixdown_buffer, gain_buffer, start, this_read, channel) != this_read) {
1052 error << string_compose(_("AudioDiskstream %1: cannot read %2 from playlist at frame %3"), id(), this_read,
1059 swap_by_ptr (buf, buf + this_read - 1);
1063 /* if we read to the end of the loop, go back to the beginning */
1073 offset += this_read;
1080 AudioDiskstream::_do_refill_with_alloc (bool partial_fill)
1082 /* We limit disk reads to at most 4MB chunks, which with floating point
1083 samples would be 1M samples. But we might use 16 or 14 bit samples,
1084 in which case 4MB is more samples than that. Therefore size this for
1085 the smallest sample value .. 4MB = 2M samples (16 bit).
1088 Sample* mix_buf = new Sample[2*1048576];
1089 float* gain_buf = new float[2*1048576];
1091 int ret = _do_refill (mix_buf, gain_buf, (partial_fill ? disk_read_chunk_frames : 0));
1099 /** Get some more data from disk and put it in our channels' playback_bufs,
1100 * if there is suitable space in them.
1102 * If fill_level is non-zero, then we will refill the buffer so that there is
1103 * still at least fill_level samples of space left to be filled. This is used
1104 * after locates so that we do not need to wait to fill the entire buffer.
1109 AudioDiskstream::_do_refill (Sample* mixdown_buffer, float* gain_buffer, framecnt_t fill_level)
1113 RingBufferNPT<Sample>::rw_vector vector;
1114 bool const reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
1115 framecnt_t total_space;
1116 framecnt_t zero_fill;
1118 ChannelList::iterator i;
1119 boost::shared_ptr<ChannelList> c = channels.reader();
1122 /* do not read from disk while session is marked as Loading, to avoid
1123 useless redundant I/O.
1126 if (_session.state_of_the_state() & Session::Loading) {
1134 assert(mixdown_buffer);
1135 assert(gain_buffer);
1142 c->front()->playback_buf->get_write_vector (&vector);
1144 if ((total_space = vector.len[0] + vector.len[1]) == 0) {
1145 /* nowhere to write to */
1150 if (fill_level < total_space) {
1151 total_space -= fill_level;
1153 /* we can't do anything with it */
1158 /* if we're running close to normal speed and there isn't enough
1159 space to do disk_read_chunk_frames of I/O, then don't bother.
1161 at higher speeds, just do it because the sync between butler
1162 and audio thread may not be good enough.
1164 Note: it is a design assumption that disk_read_chunk_frames is smaller
1165 than the playback buffer size, so this check should never trip when
1166 the playback buffer is empty.
1169 if ((total_space < disk_read_chunk_frames) && fabs (_actual_speed) < 2.0f) {
1173 /* when slaved, don't try to get too close to the read pointer. this
1174 leaves space for the buffer reversal to have something useful to
1178 if (_slaved && total_space < (framecnt_t) (c->front()->playback_buf->bufsize() / 2)) {
1184 if (file_frame == 0) {
1186 /* at start: nothing to do but fill with silence */
1188 for (chan_n = 0, i = c->begin(); i != c->end(); ++i, ++chan_n) {
1190 ChannelInfo* chan (*i);
1191 chan->playback_buf->get_write_vector (&vector);
1192 memset (vector.buf[0], 0, sizeof(Sample) * vector.len[0]);
1193 if (vector.len[1]) {
1194 memset (vector.buf[1], 0, sizeof(Sample) * vector.len[1]);
1196 chan->playback_buf->increment_write_ptr (vector.len[0] + vector.len[1]);
1201 if (file_frame < total_space) {
1203 /* too close to the start: read what we can,
1204 and then zero fill the rest
1207 zero_fill = total_space - file_frame;
1208 total_space = file_frame;
1217 if (file_frame == max_framepos) {
1219 /* at end: nothing to do but fill with silence */
1221 for (chan_n = 0, i = c->begin(); i != c->end(); ++i, ++chan_n) {
1223 ChannelInfo* chan (*i);
1224 chan->playback_buf->get_write_vector (&vector);
1225 memset (vector.buf[0], 0, sizeof(Sample) * vector.len[0]);
1226 if (vector.len[1]) {
1227 memset (vector.buf[1], 0, sizeof(Sample) * vector.len[1]);
1229 chan->playback_buf->increment_write_ptr (vector.len[0] + vector.len[1]);
1234 if (file_frame > max_framepos - total_space) {
1236 /* to close to the end: read what we can, and zero fill the rest */
1238 zero_fill = total_space - (max_framepos - file_frame);
1239 total_space = max_framepos - file_frame;
1246 framepos_t file_frame_tmp = 0;
1248 /* total_space is in samples. We want to optimize read sizes in various sizes using bytes */
1250 const size_t bits_per_sample = format_data_width (_session.config.get_native_file_data_format());
1251 size_t total_bytes = total_space * bits_per_sample / 8;
1253 /* chunk size range is 256kB to 4MB. Bigger is faster in terms of MB/sec, but bigger chunk size always takes longer
1255 size_t byte_size_for_read = max ((size_t) (256 * 1024), min ((size_t) (4 * 1048576), total_bytes));
1257 /* find nearest (lower) multiple of 16384 */
1259 byte_size_for_read = (byte_size_for_read / 16384) * 16384;
1261 /* now back to samples */
1263 framecnt_t samples_to_read = byte_size_for_read / (bits_per_sample / 8);
1265 //cerr << name() << " will read " << byte_size_for_read << " out of total bytes " << total_bytes << " in buffer of "
1266 // << c->front()->playback_buf->bufsize() * bits_per_sample / 8 << " bps = " << bits_per_sample << endl;
1267 // cerr << name () << " read samples = " << samples_to_read << " out of total space " << total_space << " in buffer of " << c->front()->playback_buf->bufsize() << " samples\n";
1269 // uint64_t before = g_get_monotonic_time ();
1270 // uint64_t elapsed;
1272 for (chan_n = 0, i = c->begin(); i != c->end(); ++i, ++chan_n) {
1274 ChannelInfo* chan (*i);
1277 framecnt_t len1, len2;
1279 chan->playback_buf->get_write_vector (&vector);
1281 if ((framecnt_t) vector.len[0] > samples_to_read) {
1283 /* we're not going to fill the first chunk, so certainly do not bother with the
1284 other part. it won't be connected with the part we do fill, as in:
1286 .... => writable space
1287 ++++ => readable space
1288 ^^^^ => 1 x disk_read_chunk_frames that would be filled
1290 |......|+++++++++++++|...............................|
1295 So, just pretend that the buf1 part isn't there.
1305 file_frame_tmp = file_frame;
1307 buf1 = vector.buf[0];
1308 len1 = vector.len[0];
1309 buf2 = vector.buf[1];
1310 len2 = vector.len[1];
1312 to_read = min (ts, len1);
1313 to_read = min (to_read, (framecnt_t) samples_to_read);
1315 assert (to_read >= 0);
1319 if (read (buf1, mixdown_buffer, gain_buffer, file_frame_tmp, to_read, chan_n, reversed)) {
1324 chan->playback_buf->increment_write_ptr (to_read);
1328 to_read = min (ts, len2);
1332 /* we read all of vector.len[0], but it wasn't the
1333 entire samples_to_read of data, so read some or
1334 all of vector.len[1] as well.
1337 if (read (buf2, mixdown_buffer, gain_buffer, file_frame_tmp, to_read, chan_n, reversed)) {
1342 chan->playback_buf->increment_write_ptr (to_read);
1346 /* XXX: do something */
1351 // elapsed = g_get_monotonic_time () - before;
1352 // cerr << "\tbandwidth = " << (byte_size_for_read / 1048576.0) / (elapsed/1000000.0) << "MB/sec\n";
1354 file_frame = file_frame_tmp;
1355 assert (file_frame >= 0);
1357 ret = ((total_space - samples_to_read) > disk_read_chunk_frames);
1359 c->front()->playback_buf->get_write_vector (&vector);
1365 /** Flush pending data to disk.
1367 * Important note: this function will write *AT MOST* disk_write_chunk_frames
1368 * of data to disk. it will never write more than that. If it writes that
1369 * much and there is more than that waiting to be written, it will return 1,
1370 * otherwise 0 on success or -1 on failure.
1372 * If there is less than disk_write_chunk_frames to be written, no data will be
1373 * written at all unless @a force_flush is true.
1376 AudioDiskstream::do_flush (RunContext /*context*/, bool force_flush)
1380 RingBufferNPT<Sample>::rw_vector vector;
1381 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1384 transvec.buf[0] = 0;
1385 transvec.buf[1] = 0;
1389 boost::shared_ptr<ChannelList> c = channels.reader();
1390 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1392 (*chan)->capture_buf->get_read_vector (&vector);
1394 total = vector.len[0] + vector.len[1];
1396 if (total == 0 || (total < disk_write_chunk_frames && !force_flush && was_recording)) {
1400 /* if there are 2+ chunks of disk i/o possible for
1401 this track, let the caller know so that it can arrange
1402 for us to be called again, ASAP.
1404 if we are forcing a flush, then if there is* any* extra
1405 work, let the caller know.
1407 if we are no longer recording and there is any extra work,
1408 let the caller know too.
1411 if (total >= 2 * disk_write_chunk_frames || ((force_flush || !was_recording) && total > disk_write_chunk_frames)) {
1415 to_write = min (disk_write_chunk_frames, (framecnt_t) vector.len[0]);
1417 // check the transition buffer when recording destructive
1418 // important that we get this after the capture buf
1420 if (destructive()) {
1421 (*chan)->capture_transition_buf->get_read_vector(&transvec);
1422 size_t transcount = transvec.len[0] + transvec.len[1];
1425 for (ti=0; ti < transcount; ++ti) {
1426 CaptureTransition & captrans = (ti < transvec.len[0]) ? transvec.buf[0][ti] : transvec.buf[1][ti-transvec.len[0]];
1428 if (captrans.type == CaptureStart) {
1429 // by definition, the first data we got above represents the given capture pos
1431 (*chan)->write_source->mark_capture_start (captrans.capture_val);
1432 (*chan)->curr_capture_cnt = 0;
1434 } else if (captrans.type == CaptureEnd) {
1436 // capture end, the capture_val represents total frames in capture
1438 if (captrans.capture_val <= (*chan)->curr_capture_cnt + to_write) {
1440 // shorten to make the write a perfect fit
1441 uint32_t nto_write = (captrans.capture_val - (*chan)->curr_capture_cnt);
1443 if (nto_write < to_write) {
1444 ret = 1; // should we?
1446 to_write = nto_write;
1448 (*chan)->write_source->mark_capture_end ();
1450 // increment past this transition, but go no further
1455 // actually ends just beyond this chunk, so force more work
1463 (*chan)->capture_transition_buf->increment_read_ptr(ti);
1467 if ((!(*chan)->write_source) || (*chan)->write_source->write (vector.buf[0], to_write) != to_write) {
1468 error << string_compose(_("AudioDiskstream %1: cannot write to disk"), id()) << endmsg;
1472 (*chan)->capture_buf->increment_read_ptr (to_write);
1473 (*chan)->curr_capture_cnt += to_write;
1475 if ((to_write == vector.len[0]) && (total > to_write) && (to_write < disk_write_chunk_frames) && !destructive()) {
1477 /* we wrote all of vector.len[0] but it wasn't an entire
1478 disk_write_chunk_frames of data, so arrange for some part
1479 of vector.len[1] to be flushed to disk as well.
1482 to_write = min ((framecnt_t)(disk_write_chunk_frames - to_write), (framecnt_t) vector.len[1]);
1484 DEBUG_TRACE (DEBUG::Butler, string_compose ("%1 additional write of %2\n", name(), to_write));
1486 if ((*chan)->write_source->write (vector.buf[1], to_write) != to_write) {
1487 error << string_compose(_("AudioDiskstream %1: cannot write to disk"), id()) << endmsg;
1491 (*chan)->capture_buf->increment_read_ptr (to_write);
1492 (*chan)->curr_capture_cnt += to_write;
1501 AudioDiskstream::transport_stopped_wallclock (struct tm& when, time_t twhen, bool abort_capture)
1503 uint32_t buffer_position;
1504 bool more_work = true;
1506 boost::shared_ptr<AudioRegion> region;
1507 framecnt_t total_capture;
1509 SourceList::iterator src;
1510 ChannelList::iterator chan;
1511 vector<CaptureInfo*>::iterator ci;
1512 boost::shared_ptr<ChannelList> c = channels.reader();
1514 bool mark_write_completed = false;
1518 /* butler is already stopped, but there may be work to do
1519 to flush remaining data to disk.
1522 while (more_work && !err) {
1523 switch (do_flush (TransportContext, true)) {
1530 error << string_compose(_("AudioDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
1535 /* XXX is there anything we can do if err != 0 ? */
1536 Glib::Threads::Mutex::Lock lm (capture_info_lock);
1538 if (capture_info.empty()) {
1542 if (abort_capture) {
1544 if (destructive()) {
1548 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1550 if ((*chan)->write_source) {
1552 (*chan)->write_source->mark_for_remove ();
1553 (*chan)->write_source->drop_references ();
1554 (*chan)->write_source.reset ();
1557 /* new source set up in "out" below */
1563 for (total_capture = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1564 total_capture += (*ci)->frames;
1567 /* figure out the name for this take */
1569 for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
1571 boost::shared_ptr<AudioFileSource> s = (*chan)->write_source;
1575 s->update_header (capture_info.front()->start, when, twhen);
1576 s->set_captured_for (_name.val());
1577 s->mark_immutable ();
1579 if (Config->get_auto_analyse_audio()) {
1580 Analyser::queue_source_for_analysis (s, true);
1585 /* destructive tracks have a single, never changing region */
1587 if (destructive()) {
1589 /* send a signal that any UI can pick up to do the right thing. there is
1590 a small problem here in that a UI may need the peak data to be ready
1591 for the data that was recorded and this isn't interlocked with that
1592 process. this problem is deferred to the UI.
1595 _playlist->LayeringChanged(); // XXX this may not get the UI to do the right thing
1599 string whole_file_region_name;
1600 whole_file_region_name = region_name_from_path (c->front()->write_source->name(), true);
1602 /* Register a new region with the Session that
1603 describes the entire source. Do this first
1604 so that any sub-regions will obviously be
1605 children of this one (later!)
1611 plist.add (Properties::start, c->front()->write_source->last_capture_start_frame());
1612 plist.add (Properties::length, total_capture);
1613 plist.add (Properties::name, whole_file_region_name);
1614 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1615 rx->set_automatic (true);
1616 rx->set_whole_file (true);
1618 region = boost::dynamic_pointer_cast<AudioRegion> (rx);
1619 region->special_set_position (capture_info.front()->start);
1623 catch (failed_constructor& err) {
1624 error << string_compose(_("%1: could not create region for complete audio file"), _name) << endmsg;
1628 _last_capture_sources.insert (_last_capture_sources.end(), srcs.begin(), srcs.end());
1630 _playlist->clear_changes ();
1631 _playlist->set_capture_insertion_in_progress (true);
1632 _playlist->freeze ();
1634 for (buffer_position = c->front()->write_source->last_capture_start_frame(), ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1638 RegionFactory::region_name (region_name, whole_file_region_name, false);
1640 DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("%1 capture start @ %2 length %3 add new region %4\n",
1641 _name, (*ci)->start, (*ci)->frames, region_name));
1647 plist.add (Properties::start, buffer_position);
1648 plist.add (Properties::length, (*ci)->frames);
1649 plist.add (Properties::name, region_name);
1651 boost::shared_ptr<Region> rx (RegionFactory::create (srcs, plist));
1652 region = boost::dynamic_pointer_cast<AudioRegion> (rx);
1655 catch (failed_constructor& err) {
1656 error << _("AudioDiskstream: could not create region for captured audio!") << endmsg;
1657 continue; /* XXX is this OK? */
1660 i_am_the_modifier++;
1662 _playlist->add_region (region, (*ci)->start, 1, non_layered());
1663 _playlist->set_layer (region, DBL_MAX);
1664 i_am_the_modifier--;
1666 buffer_position += (*ci)->frames;
1670 _playlist->set_capture_insertion_in_progress (false);
1671 _session.add_command (new StatefulDiffCommand (_playlist));
1674 mark_write_completed = true;
1677 reset_write_sources (mark_write_completed);
1681 for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
1685 capture_info.clear ();
1686 capture_start_frame = 0;
1690 AudioDiskstream::transport_looped (framepos_t transport_frame)
1692 if (was_recording) {
1693 // all we need to do is finish this capture, with modified capture length
1694 boost::shared_ptr<ChannelList> c = channels.reader();
1696 // adjust the capture length knowing that the data will be recorded to disk
1697 // only necessary after the first loop where we're recording
1698 if (capture_info.size() == 0) {
1699 capture_captured += _capture_offset;
1701 if (_alignment_style == ExistingMaterial) {
1702 capture_captured += _session.worst_output_latency();
1704 capture_captured += _roll_delay;
1710 // the next region will start recording via the normal mechanism
1711 // we'll set the start position to the current transport pos
1712 // no latency adjustment or capture offset needs to be made, as that already happened the first time
1713 capture_start_frame = transport_frame;
1714 first_recordable_frame = transport_frame; // mild lie
1715 last_recordable_frame = max_framepos;
1716 was_recording = true;
1718 if (recordable() && destructive()) {
1719 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1721 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1722 (*chan)->capture_transition_buf->get_write_vector(&transvec);
1724 if (transvec.len[0] > 0) {
1725 transvec.buf[0]->type = CaptureStart;
1726 transvec.buf[0]->capture_val = capture_start_frame;
1727 (*chan)->capture_transition_buf->increment_write_ptr(1);
1731 fatal << X_("programming error: capture_transition_buf is full on rec loop! inconceivable!")
1741 AudioDiskstream::finish_capture (boost::shared_ptr<ChannelList> c)
1743 was_recording = false;
1744 first_recordable_frame = max_framepos;
1745 last_recordable_frame = max_framepos;
1747 if (capture_captured == 0) {
1751 if (recordable() && destructive()) {
1752 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1754 RingBufferNPT<CaptureTransition>::rw_vector transvec;
1755 (*chan)->capture_transition_buf->get_write_vector(&transvec);
1757 if (transvec.len[0] > 0) {
1758 transvec.buf[0]->type = CaptureEnd;
1759 transvec.buf[0]->capture_val = capture_captured;
1760 (*chan)->capture_transition_buf->increment_write_ptr(1);
1764 fatal << string_compose (_("programmer error: %1"), X_("capture_transition_buf is full when stopping record! inconceivable!")) << endmsg;
1770 CaptureInfo* ci = new CaptureInfo;
1772 ci->start = capture_start_frame;
1773 ci->frames = capture_captured;
1775 /* XXX theoretical race condition here. Need atomic exchange ?
1776 However, the circumstances when this is called right
1777 now (either on record-disable or transport_stopped)
1778 mean that no actual race exists. I think ...
1779 We now have a capture_info_lock, but it is only to be used
1780 to synchronize in the transport_stop and the capture info
1781 accessors, so that invalidation will not occur (both non-realtime).
1784 DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("Finish capture, add new CI, %1 + %2\n", ci->start, ci->frames));
1786 capture_info.push_back (ci);
1787 capture_captured = 0;
1789 /* now we've finished a capture, reset first_recordable_frame for next time */
1790 first_recordable_frame = max_framepos;
1794 AudioDiskstream::set_record_enabled (bool yn)
1796 if (!recordable() || !_session.record_enabling_legal() || _io->n_ports().n_audio() == 0 || record_safe ()) {
1800 /* can't rec-enable in destructive mode if transport is before start */
1802 if (destructive() && yn && _session.transport_frame() < _session.current_start_frame()) {
1806 /* yes, i know that this not proof against race conditions, but its
1807 good enough. i think.
1810 if (record_enabled() != yn) {
1812 engage_record_enable ();
1814 disengage_record_enable ();
1817 RecordEnableChanged (); /* EMIT SIGNAL */
1822 AudioDiskstream::set_record_safe (bool yn)
1824 if (!recordable() || !_session.record_enabling_legal() || _io->n_ports().n_audio() == 0) {
1828 /* can't rec-safe in destructive mode if transport is before start ????
1831 if (destructive() && yn && _session.transport_frame() < _session.current_start_frame()) {
1835 /* yes, i know that this not proof against race conditions, but its
1836 good enough. i think.
1839 if (record_safe () != yn) {
1841 engage_record_safe ();
1843 disengage_record_safe ();
1846 RecordSafeChanged (); /* EMIT SIGNAL */
1851 AudioDiskstream::prep_record_enable ()
1853 if (!recordable() || !_session.record_enabling_legal() || _io->n_ports().n_audio() == 0 || record_safe ()) { // REQUIRES REVIEW "|| record_safe ()"
1857 /* can't rec-enable in destructive mode if transport is before start */
1859 if (destructive() && _session.transport_frame() < _session.current_start_frame()) {
1863 bool rolling = _session.transport_speed() != 0.0f;
1864 boost::shared_ptr<ChannelList> c = channels.reader();
1866 capturing_sources.clear ();
1868 if (Config->get_monitoring_model() == HardwareMonitoring) {
1870 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1871 (*chan)->source.request_input_monitoring (!(_session.config.get_auto_input() && rolling));
1872 capturing_sources.push_back ((*chan)->write_source);
1873 Source::Lock lock((*chan)->write_source->mutex());
1874 (*chan)->write_source->mark_streaming_write_started (lock);
1878 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1879 capturing_sources.push_back ((*chan)->write_source);
1880 Source::Lock lock((*chan)->write_source->mutex());
1881 (*chan)->write_source->mark_streaming_write_started (lock);
1889 AudioDiskstream::prep_record_disable ()
1891 boost::shared_ptr<ChannelList> c = channels.reader();
1892 if (Config->get_monitoring_model() == HardwareMonitoring) {
1893 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
1894 (*chan)->source.request_input_monitoring (false);
1897 capturing_sources.clear ();
1903 AudioDiskstream::get_state ()
1905 XMLNode& node (Diskstream::get_state());
1907 LocaleGuard lg (X_("C"));
1909 boost::shared_ptr<ChannelList> c = channels.reader();
1910 snprintf (buf, sizeof(buf), "%u", (unsigned int) c->size());
1911 node.add_property ("channels", buf);
1913 if (!capturing_sources.empty() && _session.get_record_enabled()) {
1915 XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
1916 XMLNode* cs_grandchild;
1918 for (vector<boost::shared_ptr<AudioFileSource> >::iterator i = capturing_sources.begin(); i != capturing_sources.end(); ++i) {
1919 cs_grandchild = new XMLNode (X_("file"));
1920 cs_grandchild->add_property (X_("path"), (*i)->path());
1921 cs_child->add_child_nocopy (*cs_grandchild);
1924 /* store the location where capture will start */
1928 if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
1929 snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
1931 snprintf (buf, sizeof (buf), "%" PRId64, _session.transport_frame());
1934 cs_child->add_property (X_("at"), buf);
1935 node.add_child_nocopy (*cs_child);
1942 AudioDiskstream::set_state (const XMLNode& node, int version)
1944 const XMLProperty* prop;
1945 XMLNodeList nlist = node.children();
1946 XMLNodeIterator niter;
1947 uint32_t nchans = 1;
1948 XMLNode* capture_pending_node = 0;
1949 LocaleGuard lg (X_("C"));
1951 /* prevent write sources from being created */
1953 in_set_state = true;
1955 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
1956 if ((*niter)->name() == IO::state_node_name) {
1957 deprecated_io_node = new XMLNode (**niter);
1960 if ((*niter)->name() == X_("CapturingSources")) {
1961 capture_pending_node = *niter;
1965 if (Diskstream::set_state (node, version)) {
1969 if ((prop = node.property ("channels")) != 0) {
1970 nchans = atoi (prop->value().c_str());
1973 // create necessary extra channels
1974 // we are always constructed with one and we always need one
1976 _n_channels.set(DataType::AUDIO, channels.reader()->size());
1978 if (nchans > _n_channels.n_audio()) {
1980 add_channel (nchans - _n_channels.n_audio());
1981 IO::PortCountChanged(_n_channels);
1983 } else if (nchans < _n_channels.n_audio()) {
1985 remove_channel (_n_channels.n_audio() - nchans);
1990 if (!destructive() && capture_pending_node) {
1991 /* destructive streams have one and only one source per channel,
1992 and so they never end up in pending capture in any useful
1995 use_pending_capture_data (*capture_pending_node);
1998 in_set_state = false;
2000 /* make sure this is clear before we do anything else */
2002 capturing_sources.clear ();
2004 /* write sources are handled when we handle the input set
2005 up of the IO that owns this DS (::non_realtime_input_change())
2012 AudioDiskstream::use_new_write_source (uint32_t n)
2014 boost::shared_ptr<ChannelList> c = channels.reader();
2016 if (!recordable()) {
2020 if (n >= c->size()) {
2021 error << string_compose (_("AudioDiskstream: channel %1 out of range"), n) << endmsg;
2025 ChannelInfo* chan = (*c)[n];
2028 if ((chan->write_source = _session.create_audio_source_for_session (
2029 n_channels().n_audio(), write_source_name(), n, destructive())) == 0) {
2030 throw failed_constructor();
2034 catch (failed_constructor &err) {
2035 error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
2036 chan->write_source.reset ();
2040 /* do not remove destructive files even if they are empty */
2042 chan->write_source->set_allow_remove_if_empty (!destructive());
2048 AudioDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
2050 ChannelList::iterator chan;
2051 boost::shared_ptr<ChannelList> c = channels.reader();
2054 if (!_session.writable() || !recordable()) {
2058 capturing_sources.clear ();
2060 for (chan = c->begin(), n = 0; chan != c->end(); ++chan, ++n) {
2062 if (!destructive()) {
2064 if ((*chan)->write_source) {
2066 if (mark_write_complete) {
2067 Source::Lock lock((*chan)->write_source->mutex());
2068 (*chan)->write_source->mark_streaming_write_completed (lock);
2069 (*chan)->write_source->done_with_peakfile_writes ();
2072 if ((*chan)->write_source->removable()) {
2073 (*chan)->write_source->mark_for_remove ();
2074 (*chan)->write_source->drop_references ();
2077 (*chan)->write_source.reset ();
2080 use_new_write_source (n);
2082 if (record_enabled()) {
2083 capturing_sources.push_back ((*chan)->write_source);
2088 if ((*chan)->write_source == 0) {
2089 use_new_write_source (n);
2094 if (destructive() && !c->empty ()) {
2096 /* we now have all our write sources set up, so create the
2097 playlist's single region.
2100 if (_playlist->empty()) {
2101 setup_destructive_playlist ();
2107 AudioDiskstream::set_block_size (pframes_t /*nframes*/)
2109 if (_session.get_block_size() > speed_buffer_size) {
2110 speed_buffer_size = _session.get_block_size();
2111 boost::shared_ptr<ChannelList> c = channels.reader();
2113 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2114 if ((*chan)->speed_buffer)
2115 delete [] (*chan)->speed_buffer;
2116 (*chan)->speed_buffer = new Sample[speed_buffer_size];
2119 allocate_temporary_buffers ();
2123 AudioDiskstream::allocate_temporary_buffers ()
2125 /* make sure the wrap buffer is at least large enough to deal
2126 with the speeds up to 1.2, to allow for micro-variation
2127 when slaving to MTC, Timecode etc.
2130 double const sp = max (fabsf (_actual_speed), 1.2f);
2131 framecnt_t required_wrap_size = (framecnt_t) ceil (_session.get_block_size() * sp) + 2;
2133 if (required_wrap_size > wrap_buffer_size) {
2135 boost::shared_ptr<ChannelList> c = channels.reader();
2137 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2138 if ((*chan)->playback_wrap_buffer) {
2139 delete [] (*chan)->playback_wrap_buffer;
2141 (*chan)->playback_wrap_buffer = new Sample[required_wrap_size];
2142 if ((*chan)->capture_wrap_buffer) {
2143 delete [] (*chan)->capture_wrap_buffer;
2145 (*chan)->capture_wrap_buffer = new Sample[required_wrap_size];
2148 wrap_buffer_size = required_wrap_size;
2153 AudioDiskstream::request_input_monitoring (bool yn)
2155 boost::shared_ptr<ChannelList> c = channels.reader();
2157 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2158 (*chan)->source.request_input_monitoring (yn);
2163 AudioDiskstream::set_align_style_from_io ()
2165 bool have_physical = false;
2167 if (_alignment_choice != Automatic) {
2175 get_input_sources ();
2177 boost::shared_ptr<ChannelList> c = channels.reader();
2179 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2180 if ((*chan)->source.is_physical ()) {
2181 have_physical = true;
2186 if (have_physical) {
2187 set_align_style (ExistingMaterial);
2189 set_align_style (CaptureTime);
2194 AudioDiskstream::add_channel_to (boost::shared_ptr<ChannelList> c, uint32_t how_many)
2196 while (how_many--) {
2197 c->push_back (new ChannelInfo(
2198 _session.butler()->audio_diskstream_playback_buffer_size(),
2199 _session.butler()->audio_diskstream_capture_buffer_size(),
2200 speed_buffer_size, wrap_buffer_size));
2201 interpolation.add_channel_to (
2202 _session.butler()->audio_diskstream_playback_buffer_size(),
2206 _n_channels.set(DataType::AUDIO, c->size());
2212 AudioDiskstream::add_channel (uint32_t how_many)
2214 RCUWriter<ChannelList> writer (channels);
2215 boost::shared_ptr<ChannelList> c = writer.get_copy();
2217 return add_channel_to (c, how_many);
2221 AudioDiskstream::remove_channel_from (boost::shared_ptr<ChannelList> c, uint32_t how_many)
2223 while (how_many-- && !c->empty()) {
2226 interpolation.remove_channel_from ();
2229 _n_channels.set(DataType::AUDIO, c->size());
2235 AudioDiskstream::remove_channel (uint32_t how_many)
2237 RCUWriter<ChannelList> writer (channels);
2238 boost::shared_ptr<ChannelList> c = writer.get_copy();
2240 return remove_channel_from (c, how_many);
2244 AudioDiskstream::playback_buffer_load () const
2246 boost::shared_ptr<ChannelList> c = channels.reader();
2252 return (float) ((double) c->front()->playback_buf->read_space()/
2253 (double) c->front()->playback_buf->bufsize());
2257 AudioDiskstream::capture_buffer_load () const
2259 boost::shared_ptr<ChannelList> c = channels.reader();
2265 return (float) ((double) c->front()->capture_buf->write_space()/
2266 (double) c->front()->capture_buf->bufsize());
2270 AudioDiskstream::use_pending_capture_data (XMLNode& node)
2272 const XMLProperty* prop;
2273 XMLNodeList nlist = node.children();
2274 XMLNodeIterator niter;
2275 boost::shared_ptr<AudioFileSource> fs;
2276 boost::shared_ptr<AudioFileSource> first_fs;
2277 SourceList pending_sources;
2278 framepos_t position;
2280 if ((prop = node.property (X_("at"))) == 0) {
2284 if (sscanf (prop->value().c_str(), "%" PRIu64, &position) != 1) {
2288 for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
2289 if ((*niter)->name() == X_("file")) {
2291 if ((prop = (*niter)->property (X_("path"))) == 0) {
2295 // This protects sessions from errant CapturingSources in stored sessions
2297 if (stat (prop->value().c_str(), &sbuf)) {
2301 /* XXX as of June 2014, we always record to mono
2302 files. Since this Source is being created as part of
2303 crash recovery, we know that we need the first
2304 channel (the final argument to the SourceFactory
2305 call below). If we ever support non-mono files for
2306 capture, this will need rethinking.
2310 fs = boost::dynamic_pointer_cast<AudioFileSource> (SourceFactory::createForRecovery (DataType::AUDIO, _session, prop->value(), 0));
2313 catch (failed_constructor& err) {
2314 error << string_compose (_("%1: cannot restore pending capture source file %2"),
2315 _name, prop->value())
2320 pending_sources.push_back (fs);
2322 if (first_fs == 0) {
2326 fs->set_captured_for (_name.val());
2330 if (pending_sources.size() == 0) {
2331 /* nothing can be done */
2335 if (pending_sources.size() != _n_channels.n_audio()) {
2336 error << string_compose (_("%1: incorrect number of pending sources listed - ignoring them all"), _name)
2343 boost::shared_ptr<AudioRegion> wf_region;
2344 boost::shared_ptr<AudioRegion> region;
2346 /* First create the whole file region */
2350 plist.add (Properties::start, 0);
2351 plist.add (Properties::length, first_fs->length (first_fs->timeline_position()));
2352 plist.add (Properties::name, region_name_from_path (first_fs->name(), true));
2354 wf_region = boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (pending_sources, plist));
2356 wf_region->set_automatic (true);
2357 wf_region->set_whole_file (true);
2358 wf_region->special_set_position (position);
2360 /* Now create a region that isn't the whole file for adding to
2363 region = boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (pending_sources, plist));
2365 _playlist->add_region (region, position);
2368 catch (failed_constructor& err) {
2369 error << string_compose (
2370 _("%1: cannot create whole-file region from pending capture sources"),
2381 AudioDiskstream::set_non_layered (bool yn)
2383 if (yn != non_layered()) {
2386 _flags = Flag (_flags | NonLayered);
2388 _flags = Flag (_flags & ~NonLayered);
2396 AudioDiskstream::set_destructive (bool yn)
2398 if (yn != destructive()) {
2401 bool bounce_ignored;
2402 /* requestor should already have checked this and
2403 bounced if necessary and desired
2405 if (!can_become_destructive (bounce_ignored)) {
2408 _flags = Flag (_flags | Destructive);
2409 use_destructive_playlist ();
2411 _flags = Flag (_flags & ~Destructive);
2412 reset_write_sources (true, true);
2420 AudioDiskstream::can_become_destructive (bool& requires_bounce) const
2422 if (Profile->get_trx()) {
2427 requires_bounce = false;
2431 /* if no regions are present: easy */
2433 if (_playlist->n_regions() == 0) {
2434 requires_bounce = false;
2438 /* is there only one region ? */
2440 if (_playlist->n_regions() != 1) {
2441 requires_bounce = true;
2445 boost::shared_ptr<Region> first;
2447 const RegionList& rl (_playlist->region_list().rlist());
2448 assert((rl.size() == 1));
2454 requires_bounce = false;
2458 /* do the source(s) for the region cover the session start position ? */
2460 if (first->position() != _session.current_start_frame()) {
2461 // what is the idea here? why start() ??
2462 if (first->start() > _session.current_start_frame()) {
2463 requires_bounce = true;
2468 /* currently RouteTimeAxisView::set_track_mode does not
2469 * implement bounce. Existing regions cannot be converted.
2471 * so let's make sure this region is already set up
2472 * as tape-track (spanning the complete range)
2474 if (first->length() != max_framepos - first->position()) {
2475 requires_bounce = true;
2479 /* is the source used by only 1 playlist ? */
2481 boost::shared_ptr<AudioRegion> afirst = boost::dynamic_pointer_cast<AudioRegion> (first);
2485 if (_session.playlists->source_use_count (afirst->source()) > 1) {
2486 requires_bounce = true;
2490 requires_bounce = false;
2495 AudioDiskstream::adjust_playback_buffering ()
2497 boost::shared_ptr<ChannelList> c = channels.reader();
2499 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2500 (*chan)->resize_playback (_session.butler()->audio_diskstream_playback_buffer_size());
2505 AudioDiskstream::adjust_capture_buffering ()
2507 boost::shared_ptr<ChannelList> c = channels.reader();
2509 for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
2510 (*chan)->resize_capture (_session.butler()->audio_diskstream_capture_buffer_size());
2515 AudioDiskstream::ChannelSource::is_physical () const
2521 return AudioEngine::instance()->port_is_physical (name);
2525 AudioDiskstream::ChannelSource::request_input_monitoring (bool yn) const
2531 return AudioEngine::instance()->request_input_monitoring (name, yn);
2534 AudioDiskstream::ChannelInfo::ChannelInfo (framecnt_t playback_bufsize, framecnt_t capture_bufsize, framecnt_t speed_size, framecnt_t wrap_size)
2536 current_capture_buffer = 0;
2537 current_playback_buffer = 0;
2538 curr_capture_cnt = 0;
2540 speed_buffer = new Sample[speed_size];
2541 playback_wrap_buffer = new Sample[wrap_size];
2542 capture_wrap_buffer = new Sample[wrap_size];
2544 playback_buf = new RingBufferNPT<Sample> (playback_bufsize);
2545 capture_buf = new RingBufferNPT<Sample> (capture_bufsize);
2546 capture_transition_buf = new RingBufferNPT<CaptureTransition> (256);
2548 /* touch the ringbuffer buffers, which will cause
2549 them to be mapped into locked physical RAM if
2550 we're running with mlockall(). this doesn't do
2554 memset (playback_buf->buffer(), 0, sizeof (Sample) * playback_buf->bufsize());
2555 memset (capture_buf->buffer(), 0, sizeof (Sample) * capture_buf->bufsize());
2556 memset (capture_transition_buf->buffer(), 0, sizeof (CaptureTransition) * capture_transition_buf->bufsize());
2560 AudioDiskstream::ChannelInfo::resize_playback (framecnt_t playback_bufsize)
2562 delete playback_buf;
2563 playback_buf = new RingBufferNPT<Sample> (playback_bufsize);
2564 memset (playback_buf->buffer(), 0, sizeof (Sample) * playback_buf->bufsize());
2568 AudioDiskstream::ChannelInfo::resize_capture (framecnt_t capture_bufsize)
2572 capture_buf = new RingBufferNPT<Sample> (capture_bufsize);
2573 memset (capture_buf->buffer(), 0, sizeof (Sample) * capture_buf->bufsize());
2576 AudioDiskstream::ChannelInfo::~ChannelInfo ()
2579 if (write_source->removable()) {
2580 /* this is a "stub" write source which exists in the
2581 Session source list, but is removable. We must emit
2582 a drop references call because it should not
2583 continue to exist. If we do not do this, then the
2584 Session retains a reference to it, it is not
2585 deleted, and later attempts to create a new source
2586 file will use wierd naming because it already
2589 XXX longer term TO-DO: do not add to session source
2590 list until we write to the source.
2592 write_source->drop_references ();
2596 write_source.reset ();
2598 delete [] speed_buffer;
2601 delete [] playback_wrap_buffer;
2602 playback_wrap_buffer = 0;
2604 delete [] capture_wrap_buffer;
2605 capture_wrap_buffer = 0;
2607 delete playback_buf;
2613 delete capture_transition_buf;
2614 capture_transition_buf = 0;
2619 AudioDiskstream::set_name (string const & name)
2621 if (_name == name) {
2624 Diskstream::set_name (name);
2626 /* get a new write source so that its name reflects the new diskstream name */
2628 boost::shared_ptr<ChannelList> c = channels.reader();
2629 ChannelList::iterator i;
2632 for (n = 0, i = c->begin(); i != c->end(); ++i, ++n) {
2633 use_new_write_source (n);
2640 AudioDiskstream::set_write_source_name (const std::string& str) {
2641 if (_write_source_name == str) {
2645 Diskstream::set_write_source_name (str);
2647 if (_write_source_name == name()) {
2650 boost::shared_ptr<ChannelList> c = channels.reader();
2651 ChannelList::iterator i;
2654 for (n = 0, i = c->begin(); i != c->end(); ++i, ++n) {
2655 use_new_write_source (n);