libs/ardour/session_command.cc

   1 /*
   2     Copyright (C) 2000-2007 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/session.h"
  21 #include "ardour/route.h"
  22 #include "pbd/memento_command.h"
  23 #include "ardour/diskstream.h"
  24 #include "ardour/playlist.h"
  25 #include "ardour/audioplaylist.h"
  26 #include "ardour/audio_track.h"
  27 #include "ardour/midi_playlist.h"
  28 #include "ardour/midi_track.h"
  29 #include "ardour/tempo.h"
  30 #include "ardour/audiosource.h"
  31 #include "ardour/audioregion.h"
  32 #include "ardour/midi_source.h"
  33 #include "ardour/midi_region.h"
  34 #include "ardour/session_playlists.h"
  35 #include "ardour/region_factory.h"
  36 #include "ardour/midi_automation_list_binder.h"
  37 #include "ardour/crossfade.h"
  38 #include "pbd/error.h"
  39 #include "pbd/id.h"
  40 #include "pbd/statefuldestructible.h"
  41 #include "pbd/failed_constructor.h"
  42 #include "pbd/stateful_diff_command.h"
  43 #include "evoral/Curve.hpp"
  44
  45 using namespace PBD;
  46 using namespace ARDOUR;
  47
  48 #include "i18n.h"
  49
  50 void Session::register_with_memento_command_factory(PBD::ID id, PBD::StatefulDestructible *ptr)
  51 {
  52     registry[id] = ptr;
  53 }
  54
  55 Command *
  56 Session::memento_command_factory(XMLNode *n)
  57 {
  58     PBD::ID id;
  59     XMLNode *before = 0, *after = 0;
  60     XMLNode *child = 0;
  61
  62     /* get id */
  63
  64     /* XXX: HACK! */
  65     bool have_id = n->property("obj-id") != 0;
  66     if (have_id) {
  67             id = PBD::ID(n->property("obj-id")->value());
  68     }
  69
  70     /* get before/after */
  71
  72     if (n->name() == "MementoCommand") {
  73             before = new XMLNode(*n->children().front());
  74             after = new XMLNode(*n->children().back());
  75             child = before;
  76     } else if (n->name() == "MementoUndoCommand") {
  77             before = new XMLNode(*n->children().front());
  78             child = before;
  79     } else if (n->name() == "MementoRedoCommand") {
  80             after = new XMLNode(*n->children().front());
  81             child = after;
  82     } else if (n->name() == "PlaylistCommand") {
  83             before = new XMLNode(*n->children().front());
  84             after = new XMLNode(*n->children().back());
  85             child = before;
  86     }
  87
  88     if (!child) {
  89         error << _("Tried to reconstitute a MementoCommand with no contents, failing. id=") << id.to_s() << endmsg;
  90         return 0;
  91     }
  92
  93     /* create command */
  94     string obj_T = n->property ("type-name")->value();
  95
  96     if (obj_T == "ARDOUR::AudioRegion" || obj_T == "ARDOUR::MidiRegion" || obj_T == "ARDOUR::Region") {
  97             boost::shared_ptr<Region> r = RegionFactory::region_by_id (id);
  98             if (r) {
  99                     return new MementoCommand<Region>(*r, before, after);
 100             }
 101
 102     } else if (obj_T == "ARDOUR::AudioSource" || obj_T == "ARDOUR::MidiSource") {
 103             if (sources.count(id))
 104                     return new MementoCommand<Source>(*sources[id], before, after);
 105
 106     } else if (obj_T == "ARDOUR::Location") {
 107             Location* loc = _locations->get_location_by_id(id);
 108             if (loc) {
 109                     return new MementoCommand<Location>(*loc, before, after);
 110             }
 111
 112     } else if (obj_T == "ARDOUR::Locations") {
 113             return new MementoCommand<Locations>(*_locations, before, after);
 114
 115     } else if (obj_T == "ARDOUR::TempoMap") {
 116             return new MementoCommand<TempoMap>(*_tempo_map, before, after);
 117
 118     } else if (obj_T == "ARDOUR::Playlist" || obj_T == "ARDOUR::AudioPlaylist" || obj_T == "ARDOUR::MidiPlaylist") {
 119             if (boost::shared_ptr<Playlist> pl = playlists->by_name(child->property("name")->value())) {
 120                     return new MementoCommand<Playlist>(*(pl.get()), before, after);
 121             }
 122
 123     } else if (obj_T == "ARDOUR::Route" || obj_T == "ARDOUR::AudioTrack" || obj_T == "ARDOUR::MidiTrack") {
 124                 if (boost::shared_ptr<Route> r = route_by_id(id)) {
 125                         return new MementoCommand<Route>(*r, before, after);
 126                 } else {
 127                         error << string_compose (X_("Route %1 not found in session"), id) << endmsg;
 128                 }
 129
 130     } else if (obj_T == "Evoral::Curve" || obj_T == "ARDOUR::AutomationList") {
 131             if (have_id) {
 132                     std::map<PBD::ID, AutomationList*>::iterator i = automation_lists.find(id);
 133                     if (i != automation_lists.end()) {
 134                             return new MementoCommand<AutomationList>(*i->second, before, after);
 135                     }
 136             } else {
 137                     return new MementoCommand<AutomationList> (
 138                             new MidiAutomationListBinder (n, sources),
 139                             before, after
 140                             );
 141             }
 142
 143             cerr << "Alist " << id << " not found\n";
 144
 145     } else if (obj_T == "ARDOUR::Crossfade") {
 146             boost::shared_ptr<Crossfade> c = playlists->find_crossfade (id);
 147             if (c) {
 148                     return new MementoCommand<Crossfade> (*c.get(), before, after);
 149             } else {
 150                     error << string_compose (X_("Crossfade %1 not found in session"), id) << endmsg;
 151             }
 152
 153     } else if (registry.count(id)) { // For Editor and AutomationLine which are off-limits herea
 154             return new MementoCommand<PBD::StatefulDestructible>(*registry[id], before, after);
 155     }
 156
 157     /* we failed */
 158     error << string_compose (_("could not reconstitute MementoCommand from XMLNode. object type = %1 id = %2"), obj_T, id.to_s()) << endmsg;
 159
 160     return 0 ;
 161 }
 162
 163 Command *
 164 Session::stateful_diff_command_factory (XMLNode* n)
 165 {
 166         PBD::ID const id (n->property("obj-id")->value ());
 167
 168         string const obj_T = n->property ("type-name")->value ();
 169         if ((obj_T == "ARDOUR::AudioRegion" || obj_T == "ARDOUR::MidiRegion")) {
 170                 boost::shared_ptr<Region> r = RegionFactory::region_by_id (id);
 171                 if (r) {
 172                         return new StatefulDiffCommand (r, *n);
 173                 }
 174
 175         } else if (obj_T == "ARDOUR::AudioPlaylist" ||  obj_T == "ARDOUR::MidiPlaylist") {
 176                 boost::shared_ptr<Playlist> p = playlists->by_id (id);
 177                 if (p) {
 178                         return new StatefulDiffCommand (p, *n);
 179                 } else {
 180                         cerr << "Playlist with ID = " << id << " not found\n";
 181                 }
 182         }
 183
 184         /* we failed */
 185
 186         error << string_compose (
 187                 _("could not reconstitute StatefulDiffCommand from XMLNode. object type = %1 id = %2"), obj_T, id.to_s())
 188               << endmsg;
 189
 190         return 0;
 191 }