libs/ardour/automatable.cc

   1 /*
   2     Copyright (C) 2001,2007 Paul Davis
   3
   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.
   8
   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.
  13
  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.
  17
  18 */
  19
  20 #include "ardour/ardour.h"
  21 #include <fstream>
  22 #include <inttypes.h>
  23 #include <cstdio>
  24 #include <errno.h>
  25 #include "pbd/error.h"
  26 #include "pbd/enumwriter.h"
  27
  28 #include "midi++/names.h"
  29
  30 #include "ardour/automatable.h"
  31 #include "ardour/amp.h"
  32 #include "ardour/event_type_map.h"
  33 #include "ardour/midi_track.h"
  34 #include "ardour/panner.h"
  35 #include "ardour/plugin_insert.h"
  36 #include "ardour/session.h"
  37
  38 #include "i18n.h"
  39
  40 using namespace std;
  41 using namespace ARDOUR;
  42 using namespace PBD;
  43
  44 nframes_t Automatable::_automation_interval = 0;
  45
  46 Automatable::Automatable(Session& session)
  47         : _a_session(session)
  48         , _last_automation_snapshot(0)
  49 {
  50 }
  51
  52 Automatable::Automatable (const Automatable& other)
  53         : ControlSet (other)
  54         , _a_session (other._a_session)
  55         , _last_automation_snapshot (0)
  56 {
  57         Glib::Mutex::Lock lm (other._control_lock);
  58
  59         for (Controls::const_iterator i = other._controls.begin(); i != other._controls.end(); ++i) {
  60                 boost::shared_ptr<Evoral::Control> ac (control_factory (i->first));
  61                 add_control (ac);
  62         }
  63 }
  64 int
  65 Automatable::old_set_automation_state (const XMLNode& node)
  66 {
  67         const XMLProperty *prop;
  68
  69         if ((prop = node.property ("path")) != 0) {
  70                 load_automation (prop->value());
  71         } else {
  72                 warning << _("Automation node has no path property") << endmsg;
  73         }
  74
  75         if ((prop = node.property ("visible")) != 0) {
  76                 uint32_t what;
  77                 stringstream sstr;
  78
  79                 _visible_controls.clear ();
  80
  81                 sstr << prop->value();
  82                 while (1) {
  83                         sstr >> what;
  84                         if (sstr.fail()) {
  85                                 break;
  86                         }
  87                         mark_automation_visible (Evoral::Parameter(PluginAutomation, 0, what), true);
  88                 }
  89         }
  90
  91         _last_automation_snapshot = 0;
  92
  93         return 0;
  94 }
  95
  96 int
  97 Automatable::load_automation (const string& path)
  98 {
  99         string fullpath;
 100
 101         if (path[0] == '/') { // legacy
 102                 fullpath = path;
 103         } else {
 104                 fullpath = _a_session.automation_dir();
 105                 fullpath += path;
 106         }
 107         ifstream in (fullpath.c_str());
 108
 109         if (!in) {
 110                 warning << string_compose(_("cannot open %2 to load automation data (%3)")
 111                                 , fullpath, strerror (errno)) << endmsg;
 112                 return 1;
 113         }
 114
 115         Glib::Mutex::Lock lm (control_lock());
 116         set<Evoral::Parameter> tosave;
 117         controls().clear ();
 118
 119         _last_automation_snapshot = 0;
 120
 121         while (in) {
 122                 double when;
 123                 double value;
 124                 uint32_t port;
 125
 126                 in >> port;  if (!in) break;
 127                 in >> when;  if (!in) goto bad;
 128                 in >> value; if (!in) goto bad;
 129
 130                 Evoral::Parameter param(PluginAutomation, 0, port);
 131                 /* FIXME: this is legacy and only used for plugin inserts?  I think? */
 132                 boost::shared_ptr<Evoral::Control> c = control (param, true);
 133                 c->list()->add (when, value);
 134                 tosave.insert (param);
 135         }
 136
 137         return 0;
 138
 139   bad:
 140         error << string_compose(_("cannot load automation data from %2"), fullpath) << endmsg;
 141         controls().clear ();
 142         return -1;
 143 }
 144
 145 void
 146 Automatable::add_control(boost::shared_ptr<Evoral::Control> ac)
 147 {
 148         Evoral::Parameter param = ac->parameter();
 149
 150         ControlSet::add_control(ac);
 151         _can_automate_list.insert(param);
 152         auto_state_changed(param); // sync everything up
 153
 154         /* connect to automation_state_changed so that we can emit a signal when one of our controls'
 155            automation state changes
 156         */
 157         boost::shared_ptr<AutomationControl> c = boost::dynamic_pointer_cast<AutomationControl> (ac);
 158         if (c) {
 159                 c->alist()->automation_state_changed.connect_same_thread (
 160                         _control_connections, boost::bind (&Automatable::automation_state_changed, this, c->parameter())
 161                         );
 162         }
 163 }
 164
 165 void
 166 Automatable::what_has_visible_data(set<Evoral::Parameter>& s) const
 167 {
 168         Glib::Mutex::Lock lm (control_lock());
 169         set<Evoral::Parameter>::const_iterator li;
 170
 171         for (li = _visible_controls.begin(); li != _visible_controls.end(); ++li) {
 172                 s.insert  (*li);
 173         }
 174 }
 175
 176 string
 177 Automatable::describe_parameter (Evoral::Parameter param)
 178 {
 179         /* derived classes like PluginInsert should override this */
 180
 181         if (param == Evoral::Parameter(GainAutomation)) {
 182                 return _("Fader");
 183         } else if (param.type() == PanAutomation) {
 184                 /* ID's are zero-based, present them as 1-based */
 185                 return (string_compose(_("Pan %1"), param.id() + 1));
 186         } else if (param.type() == MidiCCAutomation) {
 187                 return string_compose("%1: %2 [%3]",
 188                                 param.id() + 1, midi_name(param.id()), int(param.channel()) + 1);
 189         } else if (param.type() == MidiPgmChangeAutomation) {
 190                 return string_compose("Program [%1]", int(param.channel()) + 1);
 191         } else if (param.type() == MidiPitchBenderAutomation) {
 192                 return string_compose("Bender [%1]", int(param.channel()) + 1);
 193         } else if (param.type() == MidiChannelPressureAutomation) {
 194                 return string_compose("Pressure [%1]", int(param.channel()) + 1);
 195         } else {
 196                 return EventTypeMap::instance().to_symbol(param);
 197         }
 198 }
 199
 200 void
 201 Automatable::can_automate (Evoral::Parameter what)
 202 {
 203         _can_automate_list.insert (what);
 204 }
 205
 206 void
 207 Automatable::mark_automation_visible (Evoral::Parameter what, bool yn)
 208 {
 209         if (yn) {
 210                 _visible_controls.insert (what);
 211         } else {
 212                 set<Evoral::Parameter>::iterator i;
 213
 214                 if ((i = _visible_controls.find (what)) != _visible_controls.end()) {
 215                         _visible_controls.erase (i);
 216                 }
 217         }
 218 }
 219
 220 /** \a legacy_param is used for loading legacy sessions where an object (IO, Panner)
 221  * had a single automation parameter, with it's type implicit.  Derived objects should
 222  * pass that type and it will be used for the untyped AutomationList found.
 223  */
 224 int
 225 Automatable::set_automation_state (const XMLNode& node, Evoral::Parameter legacy_param)
 226 {
 227         Glib::Mutex::Lock lm (control_lock());
 228
 229         /* Don't clear controls, since some may be special derived Controllable classes */
 230
 231         _visible_controls.clear ();
 232
 233         XMLNodeList nlist = node.children();
 234         XMLNodeIterator niter;
 235
 236         for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 237
 238                 /*if (sscanf ((*niter)->name().c_str(), "parameter-%" PRIu32, &param) != 1) {
 239                   error << string_compose (_("%2: badly formatted node name in XML automation state, ignored"), _name) << endmsg;
 240                   continue;
 241                   }*/
 242
 243                 if ((*niter)->name() == "AutomationList") {
 244
 245                         const XMLProperty* id_prop = (*niter)->property("automation-id");
 246
 247                         Evoral::Parameter param = (id_prop
 248                                         ? EventTypeMap::instance().new_parameter(id_prop->value())
 249                                         : legacy_param);
 250
 251                         if (param.type() == NullAutomation) {
 252                                 warning << "Automation has null type" << endl;
 253                                 continue;
 254                         }
 255
 256                         boost::shared_ptr<AutomationList> al (new AutomationList(**niter, param));
 257
 258                         if (!id_prop) {
 259                                 warning << "AutomationList node without automation-id property, "
 260                                         << "using default: " << EventTypeMap::instance().to_symbol(legacy_param) << endmsg;
 261                         }
 262
 263                         boost::shared_ptr<Evoral::Control> existing = control(param);
 264                         if (existing) {
 265                                 existing->set_list(al);
 266                         } else {
 267                             boost::shared_ptr<Evoral::Control> newcontrol = control_factory(param);
 268                                 add_control(newcontrol);
 269                                 newcontrol->set_list(al);
 270                         }
 271
 272                 } else {
 273                         error << "Expected AutomationList node, got '" << (*niter)->name() << endmsg;
 274                 }
 275         }
 276
 277         _last_automation_snapshot = 0;
 278
 279         return 0;
 280 }
 281
 282 XMLNode&
 283 Automatable::get_automation_state ()
 284 {
 285         Glib::Mutex::Lock lm (control_lock());
 286         XMLNode* node = new XMLNode (X_("Automation"));
 287
 288         if (controls().empty()) {
 289                 return *node;
 290         }
 291
 292         for (Controls::iterator li = controls().begin(); li != controls().end(); ++li) {
 293                 boost::shared_ptr<AutomationList> l
 294                                 = boost::dynamic_pointer_cast<AutomationList>(li->second->list());
 295                 if (!l->empty()) {
 296                         node->add_child_nocopy (l->get_state ());
 297                 }
 298         }
 299
 300         return *node;
 301 }
 302
 303 void
 304 Automatable::set_parameter_automation_state (Evoral::Parameter param, AutoState s)
 305 {
 306         Glib::Mutex::Lock lm (control_lock());
 307
 308         boost::shared_ptr<Evoral::Control> c = control (param, true);
 309         boost::shared_ptr<AutomationList> l = boost::dynamic_pointer_cast<AutomationList>(c->list());
 310
 311         if (s != l->automation_state()) {
 312                 l->set_automation_state (s);
 313                 _a_session.set_dirty ();
 314         }
 315 }
 316
 317 AutoState
 318 Automatable::get_parameter_automation_state (Evoral::Parameter param, bool lock)
 319 {
 320         AutoState result = Off;
 321
 322         if (lock)
 323                 control_lock().lock();
 324
 325         boost::shared_ptr<Evoral::Control> c = control(param);
 326         boost::shared_ptr<AutomationList> l = boost::dynamic_pointer_cast<AutomationList>(c->list());
 327
 328         if (c)
 329                 result = l->automation_state();
 330
 331         if (lock)
 332                 control_lock().unlock();
 333
 334         return result;
 335 }
 336
 337 void
 338 Automatable::set_parameter_automation_style (Evoral::Parameter param, AutoStyle s)
 339 {
 340         Glib::Mutex::Lock lm (control_lock());
 341
 342         boost::shared_ptr<Evoral::Control> c = control(param, true);
 343         boost::shared_ptr<AutomationList> l = boost::dynamic_pointer_cast<AutomationList>(c->list());
 344
 345         if (s != l->automation_style()) {
 346                 l->set_automation_style (s);
 347                 _a_session.set_dirty ();
 348         }
 349 }
 350
 351 AutoStyle
 352 Automatable::get_parameter_automation_style (Evoral::Parameter param)
 353 {
 354         Glib::Mutex::Lock lm (control_lock());
 355
 356         boost::shared_ptr<Evoral::Control> c = control(param);
 357         boost::shared_ptr<AutomationList> l = boost::dynamic_pointer_cast<AutomationList>(c->list());
 358
 359         if (c) {
 360                 return l->automation_style();
 361         } else {
 362                 return Absolute; // whatever
 363         }
 364 }
 365
 366 void
 367 Automatable::protect_automation ()
 368 {
 369         typedef set<Evoral::Parameter> ParameterSet;
 370         ParameterSet automated_params;
 371
 372         what_has_data(automated_params);
 373
 374         for (ParameterSet::iterator i = automated_params.begin(); i != automated_params.end(); ++i) {
 375
 376                 boost::shared_ptr<Evoral::Control> c = control(*i);
 377                 boost::shared_ptr<AutomationList> l = boost::dynamic_pointer_cast<AutomationList>(c->list());
 378
 379                 switch (l->automation_state()) {
 380                 case Write:
 381                         l->set_automation_state (Off);
 382                         break;
 383                 case Touch:
 384                         l->set_automation_state (Play);
 385                         break;
 386                 default:
 387                         break;
 388                 }
 389         }
 390 }
 391
 392 void
 393 Automatable::automation_snapshot (nframes_t now, bool force)
 394 {
 395         if (force || _last_automation_snapshot > now || (now - _last_automation_snapshot) > _automation_interval) {
 396
 397                 for (Controls::iterator i = controls().begin(); i != controls().end(); ++i) {
 398                         boost::shared_ptr<AutomationControl> c
 399                                         = boost::dynamic_pointer_cast<AutomationControl>(i->second);
 400                         if (c->automation_write()) {
 401                                 c->list()->rt_add (now, i->second->user_float());
 402                         }
 403                 }
 404
 405                 _last_automation_snapshot = now;
 406         }
 407 }
 408
 409 void
 410 Automatable::transport_stopped (sframes_t now)
 411 {
 412         for (Controls::iterator li = controls().begin(); li != controls().end(); ++li) {
 413
 414                 boost::shared_ptr<AutomationControl> c
 415                                 = boost::dynamic_pointer_cast<AutomationControl>(li->second);
 416                 boost::shared_ptr<AutomationList> l
 417                                 = boost::dynamic_pointer_cast<AutomationList>(c->list());
 418
 419                 c->list()->reposition_for_rt_add (now);
 420
 421                 if (c->automation_state() != Off) {
 422                         c->set_value(c->list()->eval(now));
 423                 }
 424         }
 425 }
 426
 427 boost::shared_ptr<Evoral::Control>
 428 Automatable::control_factory(const Evoral::Parameter& param)
 429 {
 430         boost::shared_ptr<AutomationList> list(new AutomationList(param));
 431         Evoral::Control* control = NULL;
 432         if (param.type() >= MidiCCAutomation && param.type() <= MidiChannelPressureAutomation) {
 433                 MidiTrack* mt = dynamic_cast<MidiTrack*>(this);
 434                 if (mt) {
 435                         control = new MidiTrack::MidiControl(mt, param);
 436                 } else {
 437                         warning << "MidiCCAutomation for non-MidiTrack" << endl;
 438                 }
 439         } else if (param.type() == PluginAutomation) {
 440                 PluginInsert* pi = dynamic_cast<PluginInsert*>(this);
 441                 if (pi) {
 442                         control = new PluginInsert::PluginControl(pi, param);
 443                 } else {
 444                         warning << "PluginAutomation for non-Plugin" << endl;
 445                 }
 446         } else if (param.type() == GainAutomation) {
 447                 Amp* amp = dynamic_cast<Amp*>(this);
 448                 if (amp) {
 449                         control = new Amp::GainControl(X_("gaincontrol"), _a_session, amp, param);
 450                 } else {
 451                         warning << "GainAutomation for non-Amp" << endl;
 452                 }
 453         } else if (param.type() == PanAutomation) {
 454                 Panner* me = dynamic_cast<Panner*>(this);
 455                 if (me) {
 456                         control = new Panner::PanControllable(me->session(), X_("panner"), *me, param);
 457                 } else {
 458                         warning << "PanAutomation for non-Panner" << endl;
 459                 }
 460         }
 461
 462         if (!control) {
 463                 control = new AutomationControl(_a_session, param);
 464         }
 465
 466         control->set_list(list);
 467         return boost::shared_ptr<Evoral::Control>(control);
 468 }
 469
 470 boost::shared_ptr<AutomationControl>
 471 Automatable::automation_control (const Evoral::Parameter& id, bool create)
 472 {
 473         return boost::dynamic_pointer_cast<AutomationControl>(Evoral::ControlSet::control(id, create));
 474 }
 475
 476 boost::shared_ptr<const AutomationControl>
 477 Automatable::automation_control (const Evoral::Parameter& id) const
 478 {
 479         return boost::dynamic_pointer_cast<const AutomationControl>(Evoral::ControlSet::control(id));
 480 }
 481
 482 void
 483 Automatable::automation_state_changed (Evoral::Parameter const & p)
 484 {
 485         AutomationStateChanged (p); /* EMIT SIGNAL */
 486 }
 487
 488 void
 489 Automatable::clear_controls ()
 490 {
 491         _control_connections.drop_connections ();
 492         ControlSet::clear_controls ();
 493 }
 494