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