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.
34 #include <sigc++/bind.h>
36 #include "pbd/error.h"
37 #include "pbd/basename.h"
38 #include <glibmm/thread.h>
39 #include "pbd/xml++.h"
40 #include "pbd/memento_command.h"
42 #include "ardour/ardour.h"
43 #include "ardour/audioengine.h"
44 #include "ardour/diskstream.h"
45 #include "ardour/utils.h"
46 #include "ardour/configuration.h"
47 #include "ardour/audiofilesource.h"
48 #include "ardour/send.h"
49 #include "ardour/playlist.h"
50 #include "ardour/cycle_timer.h"
51 #include "ardour/region.h"
52 #include "ardour/panner.h"
53 #include "ardour/session.h"
54 #include "ardour/io.h"
55 #include "ardour/route.h"
61 using namespace ARDOUR;
64 /* XXX This goes uninitialized when there is no ~/.ardour3 directory.
65 * I can't figure out why, so this will do for now (just stole the
66 * default from configuration_vars.h). 0 is not a good value for
67 * allocating buffer sizes..
69 ARDOUR::nframes_t Diskstream::disk_io_chunk_frames = 1024 * 256;
71 sigc::signal<void> Diskstream::DiskOverrun;
72 sigc::signal<void> Diskstream::DiskUnderrun;
74 Diskstream::Diskstream (Session &sess, const string &name, Flag flag)
75 : SessionObject(sess, name)
80 Diskstream::Diskstream (Session& sess, const XMLNode& /*node*/)
81 : SessionObject(sess, "unnamed diskstream")
87 Diskstream::init (Flag f)
91 _alignment_style = ExistingMaterial;
92 _persistent_alignment_style = ExistingMaterial;
93 first_input_change = true;
94 i_am_the_modifier = 0;
95 g_atomic_int_set (&_record_enabled, 0);
96 was_recording = false;
97 capture_start_frame = 0;
99 _visible_speed = 1.0f;
100 _actual_speed = 1.0f;
101 _buffer_reallocation_required = false;
102 _seek_required = false;
103 first_recordable_frame = max_frames;
104 last_recordable_frame = max_frames;
109 adjust_capture_position = 0;
110 last_possibly_recording = 0;
112 wrap_buffer_size = 0;
113 speed_buffer_size = 0;
115 _target_speed = _speed;
118 playback_distance = 0;
119 _read_data_count = 0;
120 _write_data_count = 0;
121 commit_should_unlock = false;
123 pending_overwrite = false;
125 overwrite_queued = false;
126 input_change_pending = NoChange;
129 Diskstream::~Diskstream ()
132 _playlist->release ();
136 Diskstream::set_route (Route& r)
139 _io = _route->input();
140 input_change_pending = ConfigurationChanged;
141 non_realtime_input_change ();
142 set_align_style_from_io ();
144 _route->GoingAway.connect (mem_fun (*this, &Diskstream::route_going_away));
148 Diskstream::handle_input_change (IOChange change, void * /*src*/)
150 Glib::Mutex::Lock lm (state_lock);
152 if (!(input_change_pending & change)) {
153 input_change_pending = IOChange (input_change_pending|change);
154 _session.request_input_change_handling ();
159 Diskstream::non_realtime_set_speed ()
161 if (_buffer_reallocation_required)
163 Glib::Mutex::Lock lm (state_lock);
164 allocate_temporary_buffers ();
166 _buffer_reallocation_required = false;
169 if (_seek_required) {
170 if (speed() != 1.0f || speed() != -1.0f) {
171 seek ((nframes_t) (_session.transport_frame() * (double) speed()), true);
174 seek (_session.transport_frame(), true);
177 _seek_required = false;
182 Diskstream::realtime_set_speed (double sp, bool global)
184 bool changed = false;
185 double new_speed = sp * _session.transport_speed();
187 if (_visible_speed != sp) {
192 if (new_speed != _actual_speed) {
194 nframes_t required_wrap_size = (nframes_t) floor (_session.get_block_size() *
195 fabs (new_speed)) + 1;
197 if (required_wrap_size > wrap_buffer_size) {
198 _buffer_reallocation_required = true;
201 _actual_speed = new_speed;
202 _target_speed = fabs(_actual_speed);
207 _seek_required = true;
209 SpeedChanged (); /* EMIT SIGNAL */
212 return _buffer_reallocation_required || _seek_required;
216 Diskstream::prepare ()
219 playback_distance = 0;
223 Diskstream::recover ()
225 if (commit_should_unlock) {
232 Diskstream::set_capture_offset ()
235 /* can't capture, so forget it */
239 _capture_offset = _io->latency();
243 Diskstream::set_align_style (AlignStyle a)
245 if (record_enabled() && _session.actively_recording()) {
249 if (a != _alignment_style) {
250 _alignment_style = a;
251 AlignmentStyleChanged ();
256 Diskstream::set_loop (Location *location)
259 if (location->start() >= location->end()) {
260 error << string_compose(_("Location \"%1\" not valid for track loop (start >= end)"), location->name()) << endl;
265 loop_location = location;
267 LoopSet (location); /* EMIT SIGNAL */
272 Diskstream::get_capture_start_frame (uint32_t n)
274 Glib::Mutex::Lock lm (capture_info_lock);
276 if (capture_info.size() > n) {
277 return capture_info[n]->start;
280 return capture_start_frame;
285 Diskstream::get_captured_frames (uint32_t n)
287 Glib::Mutex::Lock lm (capture_info_lock);
289 if (capture_info.size() > n) {
290 return capture_info[n]->frames;
293 return capture_captured;
298 Diskstream::set_roll_delay (ARDOUR::nframes_t nframes)
300 _roll_delay = nframes;
304 Diskstream::set_speed (double sp)
306 _session.request_diskstream_speed (*this, sp);
308 /* to force a rebuffering at the right place */
313 Diskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
316 Glib::Mutex::Lock lm (state_lock);
318 if (playlist == _playlist) {
322 plmod_connection.disconnect ();
323 plgone_connection.disconnect ();
324 plregion_connection.disconnect ();
327 _playlist->release();
330 _playlist = playlist;
333 if (!in_set_state && recordable()) {
334 reset_write_sources (false);
337 plmod_connection = _playlist->Modified.connect (mem_fun (*this, &Diskstream::playlist_modified));
338 plgone_connection = _playlist->GoingAway.connect (bind (mem_fun (*this, &Diskstream::playlist_deleted), boost::weak_ptr<Playlist>(_playlist)));
339 plregion_connection = _playlist->RangesMoved.connect (mem_fun (*this, &Diskstream::playlist_ranges_moved));
342 /* don't do this if we've already asked for it *or* if we are setting up
343 the diskstream for the very first time - the input changed handling will
344 take care of the buffer refill.
347 if (!overwrite_queued && !(_session.state_of_the_state() & Session::CannotSave)) {
348 _session.request_overwrite_buffer (this);
349 overwrite_queued = true;
352 PlaylistChanged (); /* EMIT SIGNAL */
353 _session.set_dirty ();
359 Diskstream::playlist_changed (Change)
361 playlist_modified ();
365 Diskstream::playlist_modified ()
367 if (!i_am_the_modifier && !overwrite_queued) {
368 _session.request_overwrite_buffer (this);
369 overwrite_queued = true;
374 Diskstream::playlist_deleted (boost::weak_ptr<Playlist> wpl)
376 boost::shared_ptr<Playlist> pl (wpl.lock());
378 if (pl == _playlist) {
380 /* this catches an ordering issue with session destruction. playlists
381 are destroyed before diskstreams. we have to invalidate any handles
382 we have to the playlist.
392 Diskstream::set_name (const string& str)
396 playlist()->set_name (str);
398 SessionObject::set_name(str);
400 if (!in_set_state && recordable()) {
401 /* rename existing capture files so that they have the correct name */
402 return rename_write_sources ();
412 Diskstream::remove_region_from_last_capture (boost::weak_ptr<Region> wregion)
414 boost::shared_ptr<Region> region (wregion.lock());
420 _last_capture_regions.remove (region);
424 Diskstream::playlist_ranges_moved (list< Evoral::RangeMove<nframes_t> > const & movements_frames)
426 if (!_route || Config->get_automation_follows_regions () == false) {
430 list< Evoral::RangeMove<double> > movements;
432 for (list< Evoral::RangeMove<nframes_t> >::const_iterator i = movements_frames.begin();
433 i != movements_frames.end();
436 movements.push_back(Evoral::RangeMove<double>(i->from, i->length, i->to));
439 /* move panner automation */
440 boost::shared_ptr<Panner> p = _route->main_outs()->panner ();
442 for (uint32_t i = 0; i < p->npanners (); ++i) {
443 boost::shared_ptr<AutomationList> pan_alist = p->streampanner(i).pan_control()->alist();
444 XMLNode & before = pan_alist->get_state ();
445 pan_alist->move_ranges (movements);
446 _session.add_command (new MementoCommand<AutomationList> (
447 *pan_alist.get(), &before, &pan_alist->get_state ()));
451 /* move processor automation */
452 _route->foreach_processor (sigc::bind (sigc::mem_fun (*this, &Diskstream::move_processor_automation), movements_frames));
456 Diskstream::move_processor_automation (boost::weak_ptr<Processor> p,
457 list< Evoral::RangeMove<nframes_t> > const & movements_frames)
459 boost::shared_ptr<Processor> processor (p.lock ());
464 list< Evoral::RangeMove<double> > movements;
465 for (list< Evoral::RangeMove<nframes_t> >::const_iterator i = movements_frames.begin();
466 i != movements_frames.end(); ++i) {
467 movements.push_back(Evoral::RangeMove<double>(i->from, i->length, i->to));
470 set<Evoral::Parameter> const a = processor->what_can_be_automated ();
472 for (set<Evoral::Parameter>::iterator i = a.begin (); i != a.end (); ++i) {
473 boost::shared_ptr<AutomationList> al = processor->automation_control(*i)->alist();
474 XMLNode & before = al->get_state ();
475 al->move_ranges (movements);
476 _session.add_command (
477 new MementoCommand<AutomationList> (
478 *al.get(), &before, &al->get_state ()
485 Diskstream::route_going_away ()