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.
32 #include <glibmm/threads.h>
34 #include "pbd/error.h"
35 #include "pbd/basename.h"
36 #include "pbd/memento_command.h"
37 #include "pbd/xml++.h"
38 #include "pbd/stacktrace.h"
40 #include "ardour/debug.h"
41 #include "ardour/diskstream.h"
42 #include "ardour/io.h"
43 #include "ardour/pannable.h"
44 #include "ardour/profile.h"
45 #include "ardour/playlist.h"
46 #include "ardour/session.h"
47 #include "ardour/track.h"
53 using namespace ARDOUR;
56 ARDOUR::framecnt_t Diskstream::disk_read_chunk_frames = default_disk_read_chunk_frames ();
57 ARDOUR::framecnt_t Diskstream::disk_write_chunk_frames = default_disk_write_chunk_frames ();
59 PBD::Signal0<void> Diskstream::DiskOverrun;
60 PBD::Signal0<void> Diskstream::DiskUnderrun;
62 Diskstream::Diskstream (Session &sess, const string &name, Flag flag)
63 : SessionObject(sess, name)
64 , i_am_the_modifier (0)
68 , _visible_speed (1.0f)
69 , _actual_speed (1.0f)
70 , _buffer_reallocation_required (false)
71 , _seek_required (false)
72 , capture_start_frame (0)
73 , capture_captured (0)
74 , was_recording (false)
75 , adjust_capture_position (0)
78 , first_recordable_frame (max_framepos)
79 , last_recordable_frame (max_framepos)
80 , last_possibly_recording (0)
81 , _alignment_style (ExistingMaterial)
82 , _alignment_choice (Automatic)
86 , overwrite_offset (0)
87 , _pending_overwrite (false)
88 , overwrite_queued (false)
89 , wrap_buffer_size (0)
90 , speed_buffer_size (0)
92 , _target_speed (_speed)
95 , in_set_state (false)
97 , deprecated_io_node (0)
101 Diskstream::Diskstream (Session& sess, const XMLNode& /*node*/)
102 : SessionObject(sess, "unnamed diskstream")
103 , i_am_the_modifier (0)
105 , _record_enabled (0)
107 , _visible_speed (1.0f)
108 , _actual_speed (1.0f)
109 , _buffer_reallocation_required (false)
110 , _seek_required (false)
111 , capture_start_frame (0)
112 , capture_captured (0)
113 , was_recording (false)
114 , adjust_capture_position (0)
115 , _capture_offset (0)
117 , first_recordable_frame (max_framepos)
118 , last_recordable_frame (max_framepos)
119 , last_possibly_recording (0)
120 , _alignment_style (ExistingMaterial)
121 , _alignment_choice (Automatic)
124 , overwrite_frame (0)
125 , overwrite_offset (0)
126 , _pending_overwrite (false)
127 , overwrite_queued (false)
128 , wrap_buffer_size (0)
129 , speed_buffer_size (0)
131 , _target_speed (_speed)
133 , playback_sample (0)
134 , in_set_state (false)
135 , _flags (Recordable)
136 , deprecated_io_node (0)
140 Diskstream::~Diskstream ()
142 DEBUG_TRACE (DEBUG::Destruction, string_compose ("Diskstream %1 deleted\n", _name));
145 _playlist->release ();
148 delete deprecated_io_node;
152 Diskstream::set_track (Track* t)
155 _io = _track->input();
157 ic_connection.disconnect();
158 _io->changed.connect_same_thread (ic_connection, boost::bind (&Diskstream::handle_input_change, this, _1, _2));
160 if (_io->n_ports() != ChanCount::ZERO) {
161 input_change_pending.type = IOChange::Type (IOChange::ConfigurationChanged|IOChange::ConnectionsChanged);
162 non_realtime_input_change ();
165 _track->Destroyed.connect_same_thread (*this, boost::bind (&Diskstream::route_going_away, this));
169 Diskstream::handle_input_change (IOChange change, void * /*src*/)
171 Glib::Threads::Mutex::Lock lm (state_lock);
173 if (change.type & (IOChange::ConfigurationChanged|IOChange::ConnectionsChanged)) {
175 /* rather than handle this here on a DS-by-DS basis we defer to the
176 session transport/butler thread, and let it tackle
177 as many diskstreams as need it in one shot. this avoids many repeated
178 takings of the audioengine process lock.
181 if (!(input_change_pending.type & change.type)) {
182 input_change_pending.type = IOChange::Type (input_change_pending.type | change.type);
183 _session.request_input_change_handling ();
189 Diskstream::non_realtime_set_speed ()
191 if (_buffer_reallocation_required)
193 Glib::Threads::Mutex::Lock lm (state_lock);
194 allocate_temporary_buffers ();
196 _buffer_reallocation_required = false;
199 if (_seek_required) {
200 if (speed() != 1.0f || speed() != -1.0f) {
201 seek ((framepos_t) (_session.transport_frame() * (double) speed()), true);
204 seek (_session.transport_frame(), true);
207 _seek_required = false;
212 Diskstream::realtime_set_speed (double sp, bool global)
214 bool changed = false;
215 double new_speed = sp * _session.transport_speed();
217 if (_visible_speed != sp) {
222 if (new_speed != _actual_speed) {
224 framecnt_t required_wrap_size = (framecnt_t) ceil (_session.get_block_size() *
225 fabs (new_speed)) + 2;
227 if (required_wrap_size > wrap_buffer_size) {
228 _buffer_reallocation_required = true;
231 _actual_speed = new_speed;
232 _target_speed = fabs(_actual_speed);
237 _seek_required = true;
239 SpeedChanged (); /* EMIT SIGNAL */
242 return _buffer_reallocation_required || _seek_required;
246 Diskstream::set_capture_offset ()
249 /* can't capture, so forget it */
253 switch (_alignment_style) {
254 case ExistingMaterial:
255 _capture_offset = _io->latency();
264 DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("%1: using IO latency, capture offset set to %2 with style = %3\n", name(), _capture_offset, enum_2_string (_alignment_style)));
269 Diskstream::set_align_style (AlignStyle a, bool force)
271 if (record_enabled() && _session.actively_recording()) {
275 if ((a != _alignment_style) || force) {
276 _alignment_style = a;
277 set_capture_offset ();
278 AlignmentStyleChanged ();
283 Diskstream::set_align_choice (AlignChoice a, bool force)
285 if (record_enabled() && _session.actively_recording()) {
289 if ((a != _alignment_choice) || force) {
290 _alignment_choice = a;
292 switch (_alignment_choice) {
294 set_align_style_from_io ();
296 case UseExistingMaterial:
297 set_align_style (ExistingMaterial);
300 set_align_style (CaptureTime);
307 Diskstream::set_loop (Location *location)
310 if (location->start() >= location->end()) {
311 error << string_compose(_("Location \"%1\" not valid for track loop (start >= end)"), location->name()) << endl;
316 loop_location = location;
318 LoopSet (location); /* EMIT SIGNAL */
322 /** Get the start position (in session frames) of the nth capture in the current pass */
324 Diskstream::get_capture_start_frame (uint32_t n) const
326 Glib::Threads::Mutex::Lock lm (capture_info_lock);
328 if (capture_info.size() > n) {
329 /* this is a completed capture */
330 return capture_info[n]->start;
332 /* this is the currently in-progress capture */
333 return capture_start_frame;
338 Diskstream::get_captured_frames (uint32_t n) const
340 Glib::Threads::Mutex::Lock lm (capture_info_lock);
342 if (capture_info.size() > n) {
343 /* this is a completed capture */
344 return capture_info[n]->frames;
346 /* this is the currently in-progress capture */
347 return capture_captured;
352 Diskstream::set_roll_delay (ARDOUR::framecnt_t nframes)
354 _roll_delay = nframes;
358 Diskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
364 bool prior_playlist = false;
367 Glib::Threads::Mutex::Lock lm (state_lock);
369 if (playlist == _playlist) {
373 playlist_connections.drop_connections ();
376 _playlist->release();
377 prior_playlist = true;
380 _playlist = playlist;
383 if (!in_set_state && destructive() && recordable()) {
384 reset_write_sources (false);
387 _playlist->ContentsChanged.connect_same_thread (playlist_connections, boost::bind (&Diskstream::playlist_modified, this));
388 _playlist->LayeringChanged.connect_same_thread (playlist_connections, boost::bind (&Diskstream::playlist_modified, this));
389 _playlist->DropReferences.connect_same_thread (playlist_connections, boost::bind (&Diskstream::playlist_deleted, this, boost::weak_ptr<Playlist>(_playlist)));
390 _playlist->RangesMoved.connect_same_thread (playlist_connections, boost::bind (&Diskstream::playlist_ranges_moved, this, _1, _2));
393 /* don't do this if we've already asked for it *or* if we are setting up
394 the diskstream for the very first time - the input changed handling will
395 take care of the buffer refill.
398 if (!overwrite_queued && prior_playlist) {
399 _session.request_overwrite_buffer (_track);
400 overwrite_queued = true;
403 PlaylistChanged (); /* EMIT SIGNAL */
404 _session.set_dirty ();
410 Diskstream::playlist_changed (const PropertyChange&)
412 playlist_modified ();
416 Diskstream::playlist_modified ()
418 if (!i_am_the_modifier && !overwrite_queued) {
419 _session.request_overwrite_buffer (_track);
420 overwrite_queued = true;
425 Diskstream::playlist_deleted (boost::weak_ptr<Playlist> wpl)
427 boost::shared_ptr<Playlist> pl (wpl.lock());
429 if (pl == _playlist) {
431 /* this catches an ordering issue with session destruction. playlists
432 are destroyed before diskstreams. we have to invalidate any handles
433 we have to the playlist.
443 Diskstream::set_name (const string& str)
447 playlist()->set_name (str);
448 SessionObject::set_name(str);
454 Diskstream::set_write_source_name (const std::string& str) {
455 _write_source_name = str;
460 Diskstream::get_state ()
462 XMLNode* node = new XMLNode ("Diskstream");
466 node->add_property ("flags", enum_2_string (_flags));
467 node->add_property ("playlist", _playlist->name());
468 node->add_property("name", _name);
469 id().print (buf, sizeof (buf));
470 node->add_property("id", buf);
471 snprintf (buf, sizeof(buf), "%f", _visible_speed);
472 node->add_property ("speed", buf);
473 node->add_property ("capture-alignment", enum_2_string (_alignment_choice));
474 node->add_property ("record-safe", _record_safe ? "yes" : "no");
477 node->add_child_copy (*_extra_xml);
484 Diskstream::set_state (const XMLNode& node, int /*version*/)
486 XMLProperty const * prop;
488 if ((prop = node.property ("name")) != 0) {
489 _name = prop->value();
492 if (deprecated_io_node) {
493 set_id (*deprecated_io_node);
498 if ((prop = node.property ("flags")) != 0) {
499 _flags = Flag (string_2_enum (prop->value(), _flags));
502 if (Profile->get_trx() && (_flags & Destructive)) {
503 error << string_compose (_("%1: this session uses destructive tracks, which are not supported"), PROGRAM_NAME) << endmsg;
507 if ((prop = node.property (X_("capture-alignment"))) != 0) {
508 set_align_choice (AlignChoice (string_2_enum (prop->value(), _alignment_choice)), true);
510 set_align_choice (Automatic, true);
513 if ((prop = node.property ("playlist")) == 0) {
517 if (find_and_use_playlist (prop->value())) {
521 if ((prop = node.property ("speed")) != 0) {
522 double sp = atof (prop->value().c_str());
524 if (realtime_set_speed (sp, false)) {
525 non_realtime_set_speed ();
529 if ((prop = node.property ("record-safe")) != 0) {
530 _record_safe = PBD::string_is_affirmative (prop->value()) ? 1 : 0;
537 Diskstream::playlist_ranges_moved (list< Evoral::RangeMove<framepos_t> > const & movements_frames, bool from_undo)
539 /* If we're coming from an undo, it will have handled
540 automation undo (it must, since automation-follows-regions
541 can lose automation data). Hence we can do nothing here.
548 if (!_track || Config->get_automation_follows_regions () == false) {
552 list< Evoral::RangeMove<double> > movements;
554 for (list< Evoral::RangeMove<framepos_t> >::const_iterator i = movements_frames.begin();
555 i != movements_frames.end();
558 movements.push_back(Evoral::RangeMove<double>(i->from, i->length, i->to));
561 /* move panner automation */
562 boost::shared_ptr<Pannable> pannable = _track->pannable();
563 Evoral::ControlSet::Controls& c (pannable->controls());
565 for (Evoral::ControlSet::Controls::iterator ci = c.begin(); ci != c.end(); ++ci) {
566 boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
570 boost::shared_ptr<AutomationList> alist = ac->alist();
572 XMLNode & before = alist->get_state ();
573 bool const things_moved = alist->move_ranges (movements);
575 _session.add_command (new MementoCommand<AutomationList> (
576 *alist.get(), &before, &alist->get_state ()));
580 /* move processor automation */
581 _track->foreach_processor (boost::bind (&Diskstream::move_processor_automation, this, _1, movements_frames));
585 Diskstream::move_processor_automation (boost::weak_ptr<Processor> p, list< Evoral::RangeMove<framepos_t> > const & movements_frames)
587 boost::shared_ptr<Processor> processor (p.lock ());
592 list< Evoral::RangeMove<double> > movements;
593 for (list< Evoral::RangeMove<framepos_t> >::const_iterator i = movements_frames.begin(); i != movements_frames.end(); ++i) {
594 movements.push_back(Evoral::RangeMove<double>(i->from, i->length, i->to));
597 set<Evoral::Parameter> const a = processor->what_can_be_automated ();
599 for (set<Evoral::Parameter>::const_iterator i = a.begin (); i != a.end (); ++i) {
600 boost::shared_ptr<AutomationList> al = processor->automation_control(*i)->alist();
601 XMLNode & before = al->get_state ();
602 bool const things_moved = al->move_ranges (movements);
604 _session.add_command (
605 new MementoCommand<AutomationList> (
606 *al.get(), &before, &al->get_state ()
614 Diskstream::check_record_status (framepos_t transport_frame, bool can_record)
616 int possibly_recording;
619 const int transport_rolling = 0x4;
620 const int track_rec_enabled = 0x2;
621 const int global_rec_enabled = 0x1;
622 const int fully_rec_enabled = (transport_rolling|track_rec_enabled|global_rec_enabled);
624 /* merge together the 3 factors that affect record status, and compute
628 rolling = _session.transport_speed() != 0.0f;
629 possibly_recording = (rolling << 2) | ((int)record_enabled() << 1) | (int)can_record;
630 change = possibly_recording ^ last_possibly_recording;
632 if (possibly_recording == last_possibly_recording) {
636 const framecnt_t existing_material_offset = _session.worst_playback_latency();
638 if (possibly_recording == fully_rec_enabled) {
640 if (last_possibly_recording == fully_rec_enabled) {
644 capture_start_frame = _session.transport_frame();
645 first_recordable_frame = capture_start_frame + _capture_offset;
646 last_recordable_frame = max_framepos;
648 DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("%1: @ %7 (%9) FRF = %2 CSF = %4 CO = %5, EMO = %6 RD = %8 WOL %10 WTL %11\n",
649 name(), first_recordable_frame, last_recordable_frame, capture_start_frame,
651 existing_material_offset,
654 _session.transport_frame(),
655 _session.worst_output_latency(),
656 _session.worst_track_latency()));
659 if (_alignment_style == ExistingMaterial) {
660 first_recordable_frame += existing_material_offset;
661 DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("\tshift FRF by EMO %1\n",
662 first_recordable_frame));
665 prepare_record_status (capture_start_frame);
669 if (last_possibly_recording == fully_rec_enabled) {
671 /* we were recording last time */
673 if (change & transport_rolling) {
675 /* transport-change (stopped rolling): last_recordable_frame was set in ::prepare_to_stop(). We
676 * had to set it there because we likely rolled past the stopping point to declick out,
677 * and then backed up.
683 last_recordable_frame = _session.transport_frame() + _capture_offset;
685 if (_alignment_style == ExistingMaterial) {
686 last_recordable_frame += existing_material_offset;
692 last_possibly_recording = possibly_recording;
696 Diskstream::route_going_away ()
702 Diskstream::calculate_record_range (Evoral::OverlapType ot, framepos_t transport_frame, framecnt_t nframes,
703 framecnt_t & rec_nframes, framecnt_t & rec_offset)
706 case Evoral::OverlapNone:
710 case Evoral::OverlapInternal:
711 /* ---------- recrange
714 rec_nframes = nframes;
718 case Evoral::OverlapStart:
719 /* |--------| recrange
722 rec_nframes = transport_frame + nframes - first_recordable_frame;
724 rec_offset = first_recordable_frame - transport_frame;
728 case Evoral::OverlapEnd:
729 /* |--------| recrange
730 * |-------- transrange
732 rec_nframes = last_recordable_frame - transport_frame;
736 case Evoral::OverlapExternal:
737 /* |--------| recrange
738 * -------------- transrange
740 rec_nframes = last_recordable_frame - first_recordable_frame;
741 rec_offset = first_recordable_frame - transport_frame;
745 DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("%1 rec? %2 @ %3 (for %4) FRF %5 LRF %6 : rf %7 @ %8\n",
746 _name, enum_2_string (ot), transport_frame, nframes,
747 first_recordable_frame, last_recordable_frame, rec_nframes, rec_offset));
751 Diskstream::prepare_to_stop (framepos_t transport_frame, framepos_t audible_frame)
753 switch (_alignment_style) {
754 case ExistingMaterial:
755 last_recordable_frame = transport_frame + _capture_offset;
756 DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose("%1: prepare to stop sets last recordable frame to %2 + %3 = %4\n", _name, transport_frame, _capture_offset, last_recordable_frame));
760 last_recordable_frame = audible_frame; // note that capture_offset is zero
761 /* we may already have captured audio before the last_recordable_frame (audible frame),
764 if (last_recordable_frame > capture_start_frame) {
765 capture_captured = min (capture_captured, last_recordable_frame - capture_start_frame);
767 DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose("%1: prepare to stop sets last recordable frame to audible frame @ %2\n", _name, audible_frame));
774 Diskstream::engage_record_enable ()
776 g_atomic_int_set (&_record_enabled, 1);
780 Diskstream::disengage_record_enable ()
782 g_atomic_int_set (&_record_enabled, 0);
786 Diskstream::engage_record_safe ()
788 g_atomic_int_set (&_record_safe, 1);
792 Diskstream::disengage_record_safe ()
794 g_atomic_int_set (&_record_safe, 0);
798 Diskstream::default_disk_read_chunk_frames()
804 Diskstream::default_disk_write_chunk_frames ()
810 Diskstream::set_buffering_parameters (BufferingPreset bp)
812 framecnt_t read_chunk_size;
813 framecnt_t read_buffer_size;
814 framecnt_t write_chunk_size;
815 framecnt_t write_buffer_size;
817 if (!get_buffering_presets (bp, read_chunk_size, read_buffer_size, write_chunk_size, write_buffer_size)) {
821 disk_read_chunk_frames = read_chunk_size;
822 disk_write_chunk_frames = write_chunk_size;
823 Config->set_audio_capture_buffer_seconds (write_buffer_size);
824 Config->set_audio_playback_buffer_seconds (read_buffer_size);
826 cerr << "Set buffering params to " << disk_read_chunk_frames << '|' << disk_write_chunk_frames << '|'
827 << Config->get_audio_playback_buffer_seconds() << '|'
828 << Config->get_audio_capture_buffer_seconds ()
833 Diskstream::get_buffering_presets (BufferingPreset bp,
834 framecnt_t& read_chunk_size,
835 framecnt_t& read_buffer_size,
836 framecnt_t& write_chunk_size,
837 framecnt_t& write_buffer_size)
841 read_chunk_size = 65536; /* samples */
842 write_chunk_size = 65536; /* samples */
843 read_buffer_size = 5; /* seconds */
844 write_buffer_size = 5; /* seconds */
848 read_chunk_size = 262144; /* samples */
849 write_chunk_size = 131072; /* samples */
850 read_buffer_size = 10; /* seconds */
851 write_buffer_size = 10; /* seconds */
855 read_chunk_size = 524288; /* samples */
856 write_chunk_size = 131072; /* samples */
857 read_buffer_size = 20; /* seconds */
858 write_buffer_size = 20; /* seconds */