libs/ardour/region_factory.cc

   1 /*
   2     Copyright (C) 2000-2006 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 #define __STDC_FORMAT_MACROS
  21 #include <inttypes.h>
  22
  23 #include "pbd/error.h"
  24 #include "pbd/boost_debug.h"
  25
  26 #include "ardour/session.h"
  27
  28 #include "ardour/region_factory.h"
  29 #include "ardour/region.h"
  30 #include "ardour/audioregion.h"
  31 #include "ardour/audiosource.h"
  32 #include "ardour/midi_source.h"
  33 #include "ardour/midi_region.h"
  34 #include "ardour/utils.h"
  35
  36 #include "i18n.h"
  37
  38 using namespace ARDOUR;
  39 using namespace PBD;
  40
  41 PBD::Signal1<void,boost::shared_ptr<Region> > RegionFactory::CheckNewRegion;
  42 Glib::StaticMutex RegionFactory::region_map_lock;
  43 RegionFactory::RegionMap RegionFactory::region_map;
  44 PBD::ScopedConnectionList RegionFactory::region_list_connections;
  45 Glib::StaticMutex RegionFactory::region_name_map_lock;
  46 std::map<std::string, uint32_t> RegionFactory::region_name_map;
  47
  48 boost::shared_ptr<Region>
  49 RegionFactory::create (boost::shared_ptr<const Region> region)
  50 {
  51         boost::shared_ptr<Region> ret;
  52         boost::shared_ptr<const AudioRegion> ar;
  53         boost::shared_ptr<const MidiRegion> mr;
  54
  55         if ((ar = boost::dynamic_pointer_cast<const AudioRegion>(region)) != 0) {
  56
  57                 AudioRegion* arn = new AudioRegion (ar, 0, true);
  58                 boost_debug_shared_ptr_mark_interesting (arn, "Region");
  59
  60                 boost::shared_ptr<AudioRegion> arp (arn);
  61                 ret = boost::static_pointer_cast<Region> (arp);
  62
  63         } else if ((mr = boost::dynamic_pointer_cast<const MidiRegion>(region)) != 0) {
  64
  65                 MidiRegion* mrn = new MidiRegion (mr, 0, true);
  66                 boost::shared_ptr<MidiRegion> mrp (mrn);
  67                 ret = boost::static_pointer_cast<Region> (mrp);
  68
  69         } else {
  70                 fatal << _("programming error: RegionFactory::create() called with unknown Region type")
  71                       << endmsg;
  72                 /*NOTREACHED*/
  73         }
  74
  75         if (ret) {
  76                 map_add (ret);
  77
  78                 /* pure copy constructor - no property list */
  79                 /* pure copy constructor - no CheckNewRegion emitted */
  80         }
  81
  82         return ret;
  83 }
  84
  85 boost::shared_ptr<Region>
  86 RegionFactory::create (boost::shared_ptr<Region> region, frameoffset_t offset, const PropertyList& plist, bool announce)
  87 {
  88         return create (region, offset, true, plist, announce);
  89 }
  90
  91 boost::shared_ptr<Region>
  92 RegionFactory::create (boost::shared_ptr<Region> region, const PropertyList& plist, bool announce)
  93 {
  94         return create (region, 0, false, plist, announce);
  95 }
  96
  97 boost::shared_ptr<Region>
  98 RegionFactory::create (boost::shared_ptr<Region> region, frameoffset_t offset, bool offset_relative, const PropertyList& plist, bool announce)
  99 {
 100         boost::shared_ptr<Region> ret;
 101         boost::shared_ptr<const AudioRegion> other_a;
 102         boost::shared_ptr<const MidiRegion> other_m;
 103
 104         if ((other_a = boost::dynamic_pointer_cast<AudioRegion>(region)) != 0) {
 105
 106                 AudioRegion* ar = new AudioRegion (other_a, offset, offset_relative);
 107                 boost_debug_shared_ptr_mark_interesting (ar, "Region");
 108
 109                 boost::shared_ptr<AudioRegion> arp (ar);
 110                 ret = boost::static_pointer_cast<Region> (arp);
 111
 112         } else if ((other_m = boost::dynamic_pointer_cast<MidiRegion>(region)) != 0) {
 113
 114                 MidiRegion* mr = new MidiRegion (other_m, offset, offset_relative);
 115                 boost::shared_ptr<MidiRegion> mrp (mr);
 116                 ret = boost::static_pointer_cast<Region> (mrp);
 117
 118         } else {
 119                 fatal << _("programming error: RegionFactory::create() called with unknown Region type")
 120                       << endmsg;
 121                 /*NOTREACHED*/
 122                 return boost::shared_ptr<Region>();
 123         }
 124
 125         if (ret) {
 126                 ret->set_properties (plist);
 127                 map_add (ret);
 128
 129                 if (announce) {
 130                         CheckNewRegion (ret);
 131                 }
 132         }
 133
 134         return ret;
 135 }
 136
 137 boost::shared_ptr<Region>
 138 RegionFactory::create (boost::shared_ptr<Region> region, const SourceList& srcs, const PropertyList& plist, bool announce)
 139 {
 140         boost::shared_ptr<Region> ret;
 141         boost::shared_ptr<const AudioRegion> other;
 142
 143         /* used by AudioFilter when constructing a new region that is intended to have nearly
 144            identical settings to an original, but using different sources.
 145         */
 146
 147         if ((other = boost::dynamic_pointer_cast<AudioRegion>(region)) != 0) {
 148
 149                 // XXX use me in caller where plist is setup, this is start i think srcs.front()->length (srcs.front()->timeline_position())
 150
 151                 AudioRegion* ar = new AudioRegion (other, srcs);
 152                 boost_debug_shared_ptr_mark_interesting (ar, "Region");
 153
 154                 boost::shared_ptr<AudioRegion> arp (ar);
 155                 ret = boost::static_pointer_cast<Region> (arp);
 156
 157         } else {
 158                 fatal << _("programming error: RegionFactory::create() called with unknown Region type")
 159                       << endmsg;
 160                 /*NOTREACHED*/
 161         }
 162
 163         if (ret) {
 164
 165                 ret->set_properties (plist);
 166                 map_add (ret);
 167
 168                 if (announce) {
 169                         CheckNewRegion (ret);
 170                 }
 171         }
 172
 173         return ret;
 174
 175 }
 176
 177 boost::shared_ptr<Region>
 178 RegionFactory::create (boost::shared_ptr<Source> src, const PropertyList& plist, bool announce)
 179 {
 180         SourceList srcs;
 181         srcs.push_back (src);
 182         return create (srcs, plist, announce);
 183 }
 184
 185 boost::shared_ptr<Region>
 186 RegionFactory::create (const SourceList& srcs, const PropertyList& plist, bool announce)
 187 {
 188         boost::shared_ptr<Region> ret;
 189         boost::shared_ptr<AudioSource> as;
 190         boost::shared_ptr<MidiSource> ms;
 191
 192         if ((as = boost::dynamic_pointer_cast<AudioSource>(srcs[0])) != 0) {
 193
 194                 AudioRegion* ar = new AudioRegion (srcs);
 195                 boost_debug_shared_ptr_mark_interesting (ar, "Region");
 196
 197                 boost::shared_ptr<AudioRegion> arp (ar);
 198                 ret = boost::static_pointer_cast<Region> (arp);
 199
 200         } else if ((ms = boost::dynamic_pointer_cast<MidiSource>(srcs[0])) != 0) {
 201                 MidiRegion* mr = new MidiRegion (srcs);
 202                 boost_debug_shared_ptr_mark_interesting (mr, "Region");
 203
 204                 boost::shared_ptr<MidiRegion> mrp (mr);
 205                 ret = boost::static_pointer_cast<Region> (mrp);
 206         }
 207
 208         if (ret) {
 209
 210                 ret->set_properties (plist);
 211                 map_add (ret);
 212
 213                 if (announce) {
 214                         CheckNewRegion (ret);
 215                 }
 216         }
 217
 218         return ret;
 219 }
 220
 221 boost::shared_ptr<Region>
 222 RegionFactory::create (Session& session, XMLNode& node, bool yn)
 223 {
 224         return session.XMLRegionFactory (node, yn);
 225 }
 226
 227 boost::shared_ptr<Region>
 228 RegionFactory::create (SourceList& srcs, const XMLNode& node)
 229 {
 230         boost::shared_ptr<Region> ret;
 231
 232         if (srcs.empty()) {
 233                 return ret;
 234         }
 235
 236         if (srcs[0]->type() == DataType::AUDIO) {
 237
 238                 AudioRegion* ar = new AudioRegion (srcs);
 239                 boost_debug_shared_ptr_mark_interesting (ar, "Region");
 240
 241                 boost::shared_ptr<AudioRegion> arp (ar);
 242                 ret = boost::static_pointer_cast<Region> (arp);
 243
 244         } else if (srcs[0]->type() == DataType::MIDI) {
 245
 246                 MidiRegion* mr = new MidiRegion (srcs);
 247
 248                 boost::shared_ptr<MidiRegion> mrp (mr);
 249                 ret = boost::static_pointer_cast<Region> (mrp);
 250         }
 251
 252         if (ret) {
 253
 254                 if (ret->set_state (node, Stateful::loading_state_version)) {
 255                         ret.reset ();
 256                 } else {
 257                         map_add (ret);
 258                         CheckNewRegion (ret);
 259                 }
 260         }
 261
 262         return ret;
 263 }
 264
 265 void
 266 RegionFactory::map_add (boost::shared_ptr<Region> r)
 267 {
 268         pair<ID,boost::shared_ptr<Region> > p;
 269         p.first = r->id();
 270         p.second = r;
 271
 272         {
 273                 Glib::Mutex::Lock lm (region_map_lock);
 274                 region_map.insert (p);
 275         }
 276
 277         r->DropReferences.connect_same_thread (region_list_connections, boost::bind (&RegionFactory::map_remove, r));
 278
 279         r->PropertyChanged.connect_same_thread (
 280                 region_list_connections,
 281                 boost::bind (&RegionFactory::region_changed, _1, boost::weak_ptr<Region> (r))
 282                 );
 283
 284         update_region_name_map (r);
 285 }
 286
 287 void
 288 RegionFactory::map_remove (boost::shared_ptr<Region> r)
 289 {
 290         Glib::Mutex::Lock lm (region_map_lock);
 291         RegionMap::iterator i = region_map.find (r->id());
 292
 293         if (i != region_map.end()) {
 294                 region_map.erase (i);
 295         }
 296
 297 }
 298
 299 void
 300 RegionFactory::map_remove_with_equivalents (boost::shared_ptr<Region> r)
 301 {
 302         Glib::Mutex::Lock lm (region_map_lock);
 303
 304         for (RegionMap::iterator i = region_map.begin(); i != region_map.end(); ) {
 305                 RegionMap::iterator tmp = i;
 306                 ++tmp;
 307
 308                 if (r->region_list_equivalent (i->second)) {
 309                         region_map.erase (i);
 310                 } else if (r == i->second) {
 311                         region_map.erase (i);
 312                 }
 313
 314                 i = tmp;
 315         }
 316
 317
 318 }
 319
 320 boost::shared_ptr<Region>
 321 RegionFactory::region_by_id (const PBD::ID& id)
 322 {
 323         RegionMap::iterator i = region_map.find (id);
 324
 325         if (i == region_map.end()) {
 326                 cerr << "ID " << id << " not found in region map\n";
 327                 return boost::shared_ptr<Region>();
 328         }
 329
 330         return i->second;
 331 }
 332
 333 void
 334 RegionFactory::clear_map ()
 335 {
 336         region_list_connections.drop_connections ();
 337
 338         {
 339                 Glib::Mutex::Lock lm (region_map_lock);
 340                 region_map.clear ();
 341         }
 342
 343 }
 344
 345 void
 346 RegionFactory::delete_all_regions ()
 347 {
 348         RegionMap copy;
 349
 350         /* copy region list */
 351         {
 352                 Glib::Mutex::Lock lm (region_map_lock);
 353                 copy = region_map;
 354         }
 355
 356         /* clear existing map */
 357         clear_map ();
 358
 359         /* tell everyone to drop references */
 360         for (RegionMap::iterator i = copy.begin(); i != copy.end(); ++i) {
 361                 i->second->drop_references ();
 362         }
 363
 364         /* the copy should now hold the only references, which will
 365            vanish as we leave this scope, thus calling all destructors.
 366         */
 367 }
 368
 369 uint32_t
 370 RegionFactory::nregions ()
 371 {
 372         Glib::Mutex::Lock lm (region_map_lock);
 373         return region_map.size ();
 374 }
 375
 376 void
 377 RegionFactory::update_region_name_map (boost::shared_ptr<Region> region)
 378 {
 379         string::size_type const last_period = region->name().find_last_of ('.');
 380
 381         if (last_period != string::npos && last_period < region->name().length() - 1) {
 382
 383                 string const base = region->name().substr (0, last_period);
 384                 string const number = region->name().substr (last_period + 1);
 385
 386                 /* note that if there is no number, we get zero from atoi,
 387                    which is just fine
 388                 */
 389
 390                 Glib::Mutex::Lock lm (region_name_map_lock);
 391                 region_name_map[base] = atoi (number.c_str ());
 392         }
 393 }
 394
 395 void
 396 RegionFactory::region_changed (PropertyChange const & what_changed, boost::weak_ptr<Region> w)
 397 {
 398         boost::shared_ptr<Region> r = w.lock ();
 399         if (!r) {
 400                 return;
 401         }
 402
 403         if (what_changed.contains (Properties::name)) {
 404                 update_region_name_map (r);
 405         }
 406 }
 407
 408 int
 409 RegionFactory::region_name (string& result, string base, bool newlevel)
 410 {
 411         char buf[16];
 412         string subbase;
 413
 414         if (base.find("/") != string::npos) {
 415                 base = base.substr(base.find_last_of("/") + 1);
 416         }
 417
 418         if (base == "") {
 419
 420                 snprintf (buf, sizeof (buf), "%d", RegionFactory::nregions() + 1);
 421                 result = "region.";
 422                 result += buf;
 423
 424         } else {
 425
 426                 if (newlevel) {
 427                         subbase = base;
 428                 } else {
 429                         string::size_type pos;
 430
 431                         pos = base.find_last_of ('.');
 432
 433                         /* pos may be npos, but then we just use entire base */
 434
 435                         subbase = base.substr (0, pos);
 436
 437                 }
 438
 439                 {
 440                         Glib::Mutex::Lock lm (region_name_map_lock);
 441
 442                         map<string,uint32_t>::iterator x;
 443
 444                         result = subbase;
 445
 446                         if ((x = region_name_map.find (subbase)) == region_name_map.end()) {
 447                                 result += ".1";
 448                                 region_name_map[subbase] = 1;
 449                         } else {
 450                                 x->second++;
 451                                 snprintf (buf, sizeof (buf), ".%d", x->second);
 452
 453                                 result += buf;
 454                         }
 455                 }
 456         }
 457
 458         return 0;
 459 }
 460
 461 string
 462 RegionFactory::new_region_name (string old)
 463 {
 464         string::size_type last_period;
 465         uint32_t number;
 466         string::size_type len = old.length() + 64;
 467         char buf[len];
 468
 469         if ((last_period = old.find_last_of ('.')) == string::npos) {
 470
 471                 /* no period present - add one explicitly */
 472
 473                 old += '.';
 474                 last_period = old.length() - 1;
 475                 number = 0;
 476
 477         } else {
 478
 479                 number = atoi (old.substr (last_period+1).c_str());
 480
 481         }
 482
 483         while (number < (UINT_MAX-1)) {
 484
 485                 const RegionMap& regions (RegionFactory::regions());
 486                 RegionMap::const_iterator i;
 487                 string sbuf;
 488
 489                 number++;
 490
 491                 snprintf (buf, len, "%s%" PRIu32, old.substr (0, last_period + 1).c_str(), number);
 492                 sbuf = buf;
 493
 494                 for (i = regions.begin(); i != regions.end(); ++i) {
 495                         if (i->second->name() == sbuf) {
 496                                 break;
 497                         }
 498                 }
 499
 500                 if (i == regions.end()) {
 501                         break;
 502                 }
 503         }
 504
 505         if (number != (UINT_MAX-1)) {
 506                 return buf;
 507         }
 508
 509         error << string_compose (_("cannot create new name for region \"%1\""), old) << endmsg;
 510         return old;
 511 }
 512
 513 void
 514 RegionFactory::get_regions_using_source (boost::shared_ptr<Source> s, std::set<boost::shared_ptr<Region> >& r)
 515 {
 516         Glib::Mutex::Lock lm (region_map_lock);
 517
 518         for (RegionMap::iterator i = region_map.begin(); i != region_map.end(); ++i) {
 519                 if (i->second->uses_source (s)) {
 520                         r.insert (i->second);
 521                 }
 522         }
 523 }